TABLE OF CONTENTS. Figure 5: Modelled Concentrations of Suspended Particulate Worst-Case 24-Hour Average

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2 TABLE OF CONTENTS Page No. 1. INTRODUCTION Acton Quarry Extension Aggregate Resources Act Niagara Escarpment Planning & Development Act Planning Act Overview of Study Overview of the Application Phase 4 Operations Phase 5 Operations Phase 6 Operations Phase 7 Operations POTENTIAL IMPACT LOCATIONS PROPOSED OPERATIONS APPLICABLE REGULATIONS CONTAMINANT STANDARDS FOR QUARRY OPERATIONS WIND CLIMATE BACKGROUND AIR QUALITY (OTHER POLLUTANT SOURCES AND CUMULATIVE EFFECTS) EMISSION SUMMARY AND DISPERSION MODELLING RESULTS OF COMPLIANCE ASSESSMENT GUIDANCE ON BEST MANAGEMENT PRACTICES FOR DUST CONCLUSION & RECOMMENDATIONS FIGURES Figure 1: Site Plan with Property Line Including Residential Receptors Figure 2: Wind Rose from Pearson International Airport, Toronto, Ontario Figure 3: Wind Rose from Waterloo International Airport, Waterloo, Ontario Figure 4: Modelled Concentrations of Suspended Particulate Worst-Case 24-Hour Average Values Phase 4 Operations Contours in µg/m 3 Figure 5: Modelled Concentrations of Suspended Particulate Worst-Case 24-Hour Average Values Phase 5 Operations Contours in µg/m 3 Figure 6: Modelled Concentrations of Suspended Particulate Worst-Case 24-Hour Average Values Phase 6 Operations Contours in µg/m 3 Figure 7: Modelled Concentrations of Suspended Particulate Worst-Case 24-Hour Average Values Phase 7 Operations Contours in µg/m 3 ATTACHMENTS Attachment 1: Emission Summary and Dispersion Modelling Report Attachment 2: Best Management practices Plan for Fugitive Dust Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

3 1. INTRODUCTION Dufferin Aggregates, a business unit of St. Lawrence Cement Inc. is applying to expand its Acton Quarry, in the Town of Halton Hills, Regional Municipality of Halton. The proposed extension is located to the north and south of the existing operation. 1.1 Acton Quarry Extension The Acton Quarry Extension is located in Part of Lots 19, 20, 21, 22, and 24 Concession 3 and Part of Lots 20, 21 and 22, Concession 4, Town of Halton Hills, Regional Municipality of Halton. The total proposed licence area is ha (307.4 ac) and the total proposed extraction area is 99 ha (244.6 ac). The required land use applications include: Aggregate Resources Act A Class A License, Category 2 Quarry Below Water Niagara Escarpment Planning & Development Act An amendment to the Niagara Escarpment Plan (2005) for lands within the Niagara Escarpment Plan boundary. Niagara Escarpment Development Permit for lands within the Niagara Escarpment Development Control Area Planning Act An amendment to The Regional Plan, Regional Municipality of Halton (2006). An amendment to the Town of Halton Hills Official Plan (2008). Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 1

4 A Town of Halton Hills Zoning By-law Amendment for the lands outside of the Niagara Escarpment Development Control Area. 1.2 Overview of Study RWDI AIR Inc. (RWDI) conducted an air quality assessment for the proposed extension of the Acton Quarry, consisting of the following tasks: Review of site plans, operational plans and data; Visit to the site and surrounding area; Review of applicable regulations; Review of wind climate data; Review of background air quality levels; Estimate air quality emissions from on-site operations; Estimate potential air quality impacts based on compliance-level dispersion modelling performed according to Ontario Regulation 419/05 requirements; Comment on potential air quality impacts; Recommend appropriate air quality control measures. Our findings are summarized in Sections 2 through Overview of the Application Dufferin has assembled ha (745 ac) of land generally north and south of its existing Acton Quarry. The Acton Quarry Extension is located in Part of Lots 19, 20, 21, 22, and 24 Concession 3 and Part of Lots 20, 21 and 22, Concession 4, Town of Halton Hills, Regional Municipality of Halton. The total proposed licence area is ha (307.4 ac) and the total proposed extraction area is 99 ha (244.6 ac). The remaining two-thirds of Dufferin s lands will be maintained and protected for conservation uses. Activities in these areas will be limited to monitoring, environmental mitigation and ecological enhancement. Page 2 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

5 The proposed extension will operate as a continuation to the existing quarry. The proposed quarry will not result in an increase in permitted production levels. Dufferin is applying for a tonnage limit of 4 million tonnes per annum, which is the same as the existing quarry. The following sections provide details on each phase of operations during the proposed extension Phase 4 Operations Site preparation and extraction in Phase 4 will commence when Phase 3 of the existing quarry is nearing completion. There will be no processing in Phase 4. Blasted aggregate will be transported by quarry trucks to the existing processing plant. Shipping to market will be status quo as it will utilize the existing entrance / exit and established haul routes Phase 5 Operations Phase 5 is a continuation of the existing quarry from Phase 2 and 3. Blasted aggregate from Phase 5 will be predominantly transported by quarry trucks to the existing processing plant using the same internal routes in place for Phase 2 and 3 of the existing operations. A portable processing plant is also permitted in Phase 5. If processing occurs the material will be shipped directly from the Phase, and trucks will travel north on 3 rd line and then utilize the existing established haul routes. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 3

6 1.3.3 Phase 6 Operations Phase 6 east of 3rd Line is located south of the pillar. A sinking cut/access ramp will be required. Phase 6 west is a continuation of Phase 5 west and no sinking cut is required. Blasted aggregate will be predominantly transported by quarry truck to the existing processing plant. With the exception of Phase 6 east, where quarry trucks will travel up and over the rock pillar, before proceeding north through Phase 2, quarry trucks will use the same internal routes in place for Phase 2 and 3 of the existing operations. A portable processing plant is also permitted in Phase 6. If processing occurs the material will be shipped directly from the Phase, and trucks will travel north on 3 rd line and then utilize the existing established haul routes Phase 7 Operations Phase 7 is the southernmost cell and a sinking cut/access ramp is required. Phase 7 can only produce and ship approximately 1 million tonnes annually due to its size and configuration. Phase 7 will be extracted with a portable processing plant, including a wash plant and shipping to market is directly from Phase 7. Trucks travel north on 3rd Line to 22nd Sideroad and than use existing haul routes. 2. POTENTIAL IMPACT LOCATIONS Dufferin has assembled ha (745 ac) of land generally north and south of its existing Acton Quarry, of which only 99 ha (244.6 ac) is proposed for extraction. The additional land will assist in buffering the extension from the closest rural residents. For the purposes of completing the air quality assessment, RWDI has identified the closest residential receptors in proximity to the proposed extension: Rural residences on 3 rd line, south of 22nd Sideroad. These residences are labelled 10 through 13 on Figure 1, the nearest of which is approximately 240m east of the Page 4 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

7 proposed limit of extraction; these residences are at higher elevation than the quarry site and will be over 20 m above the quarry floor; Rural residences on 3rd line and on Glen Lawson Road, (labelled 27 through 29 on Figure 1), located approximately 550m northeast of the proposed limit of extraction; these residences are at higher elevation than the quarry site and will be over 20 m above the quarry floor; Rural residences along Halton Regional Road 25 (labelled 1 through 9 on Figure 1) the nearest of which is approximately 230m west of the proposed limit of extraction; this residence is at a higher elevation than the quarry site and will be over 20 m above the quarry floor. Rural residences on 4th Line, south of 22nd Sideroad, labelled 14 through 19 on Figure 1, the nearest of which is approximately 550m east of the proposed limit of extraction. These residences are at approximately the same elevation as the permanent plant, or lower, as they are below the Niagara Escarpment; Rural residences on 4th Line, north of 22nd Sideroad, labelled 20 through 26 on Figure 1, the nearest of which is approximately 1,250 m northeast of the proposed limit of extraction. These residences, which are located near the existing processing plant, are at approximately the same elevation as the permanent plant, or lower, as they are below the Niagara Escarpment; 3. PROPOSED OPERATIONS Proposed operations within the existing Acton Quarry will consist of the following: Aggregate processing at the permanent plant (crushing, screening and stockpiling); Aggregate washing at the permanent plant; and, Shipping (front-end loader loads highway trucks for shipment of aggregate off site). Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 5

8 Operations within the proposed extension will consist of the following: Site preparation (overburden removal, berm construction, rehabilitation); Aggregate extraction (drilling, blasting, front-end loader and quarry trucks at the extraction face); Hauling of aggregate from the extraction face to the permanent plant; and, Aggregate processing, at the portable plant, to be located in either Phase 5, 6 or 7; Aggregate washing, at the portable plant, to be located in either Phase 5, 6 or 7; Shipping from the portable processing plant, to be located in either Phase 5, 6 or APPLICABLE REGULATIONS The Aggregate Resource Act (ARA) for Ontario states that, in considering whether a license should be issued or refused, the Minister of Natural Resources shall have regard to effects on the environment and nearby communities. Standards have been developed in support of the ARA, and these standards include three prescribed conditions for Category 2 licenses that pertain to dust emissions. The first states that dust will be mitigated on site. The second states that water or other approved dust suppressant will be applied to internal haul roads and processing areas, as required, to mitigate dust. The third states that processing equipment will be equipped with dust suppressing or collection devices where the equipment creates dust and is operated within 300m of a sensitive receptor. Section 9 of the EPA states that no person shall construct, alter, extend or replace any plant, structure, equipment, apparatus, mechanism or thing that may discharge or from which may be discharged a contaminant, except in accordance with a certificate of approval issued by the Director of Approvals at the Ministry of Environment. Ontario Regulation 524 identifies certain types of equipment for which Section 9 does not apply. This includes mobile equipment used for crushing or screening of aggregate, if the mobile equipment is located below grade in a pit or quarry that is operated in accordance with a license under the ARA. Page 6 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

9 Ontario Regulation 419/05 deals specifically with the protection of communities from local air quality impacts. Section 33 of Regulation 419/05 States that No person shall cause or permit to be caused the emission of any air contaminant to such extent or degree as may, (a) cause discomfort to persons; (b) cause loss of enjoyment of normal use of property; (c) interfere with normal conduct of business; or (d) cause damage to property. Section 20 of Regulation 419/05 States the following: A person shall not discharge or cause or permit the discharge of a contaminant listed in Schedule 3 into the air if the discharge results in the concentration of the contaminant at a point of impingement exceeding that standard. A person shall not discharge or cause or permit the discharge of a contaminant listed in Schedule 3 into the air if the discharge would result, according to an approved dispersion model, in the concentration of the contaminant at a point of impingement exceeding that standard. The regulation does not define the term point of impingement but the regulation read together with MOE Guideline A-10, entitled Procedure for Preparing an Emission Summary and Dispersion Modelling Report, Version 2.0 (July, 2005), Section 10.2, provides certain direction. Generally, off-site locations, with certain exclusions such as railway right-of-ways, most public roadways between two separate parcels of the facility property, and bodies of water except where an adverse effect can be expected, will be treated as points of impingement. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 7

10 Guideline A-10 describes in detail how approved dispersion modeling is to be conducted. It includes specific approaches for dealing with industrial facilities that have fugitive dust emissions, such as aggregate operations, mining operations, steel mills, etc. Subsection 7.4 addresses fugitive dust emissions from on-site roadways and storage piles. This section states that in many situations, fugitive dust emissions from on-site roadways and storage piles are insignificant or the most appropriate manner in which to manage POI [Point of Impingement] concentrations from these types of sources is through an effective best management practices plan. It goes on to say that on-site roadways and storage piles may be excluded from a compliance assessment where the nature of the dust is such that it is unlikely to pose a health risk to humans and the emissions are small or have been minimized through implementation of a best management practices plan. Non-metallic mineral mining and quarrying are listed in Subsection 7.4 as industrial sectors where dust from roadways and stockpiles must be included in the compliance assessment unless the facility implements a best practices management plan. Thus, for dolostone quarries, the Ministry of the Environment considers that a best practices management plan is the most appropriate manner to manage POI concentrations from roadways and storage piles and these sources need not be part of the compliance assessment. The purpose of RWDI s work is to undertake a compliance assessment for the facility using approved dispersion modeling in accordance with Regulation 419/05 and Guideline A-10, and to provide guidance on management practices for dust. This guidance can then be utilized to help prepare a Best Management Practices Plan (BMPP) to appropriately manage dust from roadways and storage piles as per Ministry guidance. Based on our past experience, the layout and mitigation measures for the processing plant needed for a successful compliance assessment, together with a well-implemented BMPP for roadways and storage piles are sufficient tools for a facility to be able to comply with Section 14 of the EPA and Section 33 of Regulation 419/05. Page 8 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

11 5. CONTAMINANT STANDARDS FOR QUARRY OPERATIONS The main contaminant of concern in quarry operations, from the perspective of Ontario Regulation 419/05, is suspended particulate matter, less than 44 µm diameter (SPM). These particles are small enough to remain suspended in the atmosphere over long periods of time due to their low settling velocity. The main potential sources of SPM at the Acton Quarry are dust from truck traffic, loading, stockpiling, drilling and blasting. Details on the dust sources are provided in Attachment 1. Schedule 3 of Regulation 419/05 includes a standard for SPM, as well as other contaminants, in terms of micrograms of contaminant per cubic meter of air (µg/m3). Smaller size fractions of dust, such as particles less than 10 microns in diameter (inhalable particulate matter, or PM10) and particulate less than 2.5 microns in diameter (respirable particulate matter, or PM2.5) are generally a concern in terms of health effects. However, these smaller fractions do not have standards under Regulation 419/05. Instead, PM10 has an interim Ambient Air Quality Criterion value available, while PM2.5 has a Canada Wide Standard in place. The PM10 Criterion is not an enforced standard, but represents the desirable level in the outside air. The Canada Wide Standard for PM2.5 is a federal standard intended as a target for provincial implementation plans to reduce fine particulate matter in population centres across Canada. In Ontario, it is not used to regulate local air quality effects from industrial sources, such as stone quarries. As explained further in Attachment 1, PM10 and PM2.5 are a relatively small portion of the suspended particulate matter generated at quarry operations. As a result, compliance with the provincial standard for SPM also ensures acceptable levels of PM10 and PM2.5. The compliance of the process sources for SPM and the mitigation measures for haul roads and storage piles in the Best Management Practices Plan are expected to result in acceptable levels of not only SPM but also PM10 and PM2.5. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 9

12 The Acton Quarry processes dolomitic material. Stone dust consists mainly of magnesium and calcium carbonate, which does not have a specific limit under the O. Reg. 419/05. However, dolostone dust can also include small amounts of other substances, most notably silica. Respirable quartz silica (<10 μm diameter) has a 24-hour AAQC of 5 μg/m3. Generally, the stone quarried and processed at the Acton Quarry has negligible silica content, and is not considered to be an issue. In addition, the combustion by-products from the operation of the diesel generators used to power the portable processing plant in Phases 5, 6 or 7 will be assessed under O. Reg. 419/05. The contaminants of interest that are typically produced as a result of the combustion of diesel fuel include oxides of nitrogen (NO x ), and SPM. Carbon monoxide is typically not significant relative to NO x, as the standards for carbon monoxide under O. Reg. 419/05 are higher, and the emissions significantly lower than for NOx. On-site mobile equipment also contributes combustion by-product emissions but is not subject to the compliance assessment, as Section 5 of Regulation 419/05 states that this Regulation does not apply to discharges of contaminants from motor vehicles. The Regulation 419/05 Schedule 3 standards for the combustion byproducts are listed in the following table: Table 1: Contaminant Standards for Quarry Operation Standard Contaminant (µg/m 3 ) Averaging Period (hours) Suspended Particulate Matter (SPM) Oxides of Nitrogen (NO x ) Source of Standard Regulation 419/05 Schedule 3 Regulation 419/05 Schedule 3 Page 10 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

13 6. WIND CLIMATE The nearest Environment Canada weather stations with long-term hourly wind data are located at Pearson International Airport, which is about 30 km to the east of the site, and the Region of Waterloo International Airport, about 35 km southwest of the site. The following interpretation of the wind climate is based on statistics for these two sites, for the period between May and October, when the potential for dust emissions is greatest. Based on the site plan for the existing operations and the proposed extension, nearby receptors (within approximately 300m) are located to the east through northeast of the extraction and/or processing areas. For the existing processing plant, these receptors consist of the rural residences on 4th Line, north of 22nd Sideroad. For the proposed processing plant in Phase 7, these receptors consist of rural residences on 3rd line, south of 22nd Sideroad. The wind directions of interest are therefore typically those from the southeast through west direction, which, as discussed below, are also relatively common wind directions for the area. This suggests that control of fugitive dust from the processing plants is a potential concern for processing operations both at the existing plant and in Phase 7. Thus, implementation of an effective Best Management Practice plan is recommended for the processing plants and associated stockpiles and haul routes. In the case of Phase 5 extraction, there is a single nearby receptor that is west to westsouthwest of the nearest extraction face. This residence is located along the east side of Halton Regional Road 25, south of 22nd Sideroad. Although winds from the east and east-northeast may therefore also be of interest, these wind directions are also generally less common than from the western half of the compass. Wind erosion of stockpiles and significant wind-induced emissions from truck loading begin to occur when the wind gusts exceed 15 to 20 km/h and becomes significant when the gusts exceed about 30 km/h. As the existing and proposed processing plants are relatively close to several potential receptors, the frequency of these winds has been presented. Wind frequency data are presented graphically in Figures 2 and 3. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 11

14 The wind record at Pearson indicates that winds from the southeast through west occur approximately 23% of the time. Winds in excess of 15 km/h from these directions occur approximately 13% of the time, while winds in excess of 30 km/h from these directions occur approximately 4% of the time. Calms (winds speeds below 1m/s) accounted for 4% of the meteorological record at this site. The number of missing or incomplete hours of data was low at this site, accounting for 0.3% of the meteorological record. The wind record at Waterloo indicates that winds from the southeast through west occur approximately 20% of the time. Winds in excess of 15 km/h from these directions occur approximately 12% of the time, while winds in excess of 30 km/h from these directions occur approximately 3% of the time. Calms (winds speeds below 1m/s) accounted for 12% of the meteorological record at this site, and there were also a higher number of missing or incomplete hours of data (5% of the meteorological record). 7. BACKGROUND AIR QUALITY (OTHER POLLUTANT SOURCES AND CUMULATIVE EFFECTS) Historical monitoring data on existing dust levels in the vicinity of the study site are not available. In general, the background air quality in this area can be considered typical of rural southern Ontario. The site is generally far removed from upwind major heavy industries and major population centers. Thus, background air quality in the area would be dominated by local vehicle traffic, agricultural sources and long-range transport, and the air quality levels are expected to be relatively low compared to more populated areas or areas with heavy industry. There are existing aggregate extraction operations in the vicinity of the Acton Quarry that may contribute to background dust levels in the area. CBM Aggregates / St. Marys (CBM) own and operate the house Pit, under three licenses. CBM has also applied for additional licensed area to the north. The house Pit is generally bounded by Black Creek and 4th Line to the west, the railway line to the south and 5th line to the east. Additional licensed land is located west of 4th line north of Glen Lawson Road. Page 12 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

15 The rural residences on 4th line, north of 22nd Sideroad are situated between the CBM pit and the existing Acton Quarry processing plant. These residences are approximately 250 m northeast of the existing Acton Quarry processing plant, and 850m southwest of the CBM house Pit processing plant. As such, these residences are relatively far removed from the house Pit and also cannot be downwind of both sites at any time. In addition, there are residences within the Village of house, along 5th Line, north of Halton Regional Road 43, that are in line with both the CBM processing plant and the existing Acton Quarry processing plant. These residences are approximately 1,450 m northeast of the existing Acton Quarry processing plant, and 150 m northeast of the CBM processing plant. Although these residences could potentially be downwind from both processing plants, the distance from the existing Acton Quarry processing plant suggests that if both sites are in compliance with O. Reg. 419/05, it is not likely that there would be a combined impact at these receptors; consequently, further study is not warranted. Aside from the aggregate extraction operations noted above, there are no other significant contributors to background dust within the vicinity of the Acton Quarry. 8. EMISSION SUMMARY AND DISPERSION MODELLING An Emission Summary and Dispersion Modelling Report (ESDM) has been prepared in accordance with Regulation 419/05 requirements. The ESDM for the Acton Quarry Extension is provided as Attachment 1. The ESDM presents the emission rate estimation and dispersion modelling methodology used to assess compliance of the Acton Quarry Extension s operations with Regulation 419/05 requirements. The ESDM considered emissions from the following sources: Loading of raw aggregate into trucks at the quarry active face; Unloading of trucks at the quarry processing plant(s); Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 13

16 Operation of processing equipment, such as crushers, screens, and conveyors; Loading of finished aggregate into trucks for off-site sales; and, Operation of the diesel generators used to power the portable plant. Emissions from on-site vehicle traffic and wind erosion of stockpiled material were not considered in the ESDM, since the Acton Quarry Extension will have a Best Management Practices Plan for dust. This approach is consistent with Regulation 419/05 requirements as set out above. Emission factors from the U.S. EPA s AP-42 documents were used to estimate emissions at the Acton Quarry Extension under worst-case (upper bound) operating conditions. Impacts were assessed based on dispersion modelling using the U.S. EPA s AERMOD dispersion model. The model predicted maximum contaminant levels under worst-case weather conditions. Further details are provided within the ESDM report. 9. RESULTS OF COMPLIANCE ASSESSMENT Results of the compliance assessment for suspended particulate matter are presented in Table 2. At all locations beyond the property line, including the residential receptors, the predicted maximum concentrations of suspended particulate matter, contributed by the proposed operation, are below the O. Reg. 419/05 Schedule 3 Standard. Figures 4 through 7 provide contour plots for operations during Phases 4 through 7, which show the predicted 24-hour average concentrations of suspended particulate in micrograms per cubic metre. In comparison to suspended particulate matter, predicted concentrations of contaminants (oxides of nitrogen) from combustions sources (i.e., the diesel generator for the portable processing plant in Phase 5, 6, or 7) are generally lower with respect to the O. Reg. 419/05 standard at the property line, and significantly lower with respect the standards at the residential receptors. Results for oxides of nitrogen are presented in Attachment 1. Page 14 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

17 As previously mentioned, the results presented here apply to upper bound operating conditions, and worst-case meteorological conditions. In particular, the operating condition used in the analysis represents a production and shipping level that far exceeds the average needed to produce the 4 million tonnes per year. This combination of upper-bound production and shipping, and worst case meteorological conditions is predicted to occur rarely, if ever. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 15

18 Table 2: Maximum Predicted 24-Hour Concentration of Suspended Particulate Matter Under upper-bound operating conditions and worst-case meteorological conditions Receptor Operating Scenario Phase 4 Phase 5E Phase 5W Phase 6E Phase 6W Phase 7 Maximum Percent Maximum Percent Maximum Percent Maximum Percent Maximum Percent Maximum Percent Predicted Of Predicted Of Predicted Of Predicted Of Predicted Of Predicted Of 24-Hour Standard 24-Hour Standard 24-Hour Standard 24-Hour Standard 24-Hour Standard 24-Hour Standard Conc. Conc. Conc. Conc. Conc. Conc. (µg/m³) % (µg/m³) % (µg/m³) % (µg/m³) % (µg/m³) % (µg/m³) % Maximum Off-site [1] % % % % % % Receptor % 9 8% 9 8% 10 8% 10 8% 9 8% Receptor % 9 8% 9 8% 8 7% 8 7% 8 7% Receptor % 12 10% 12 10% 12 10% 12 10% 12 10% Receptor % 6 5% 6 5% 6 5% 6 5% 6 5% Receptor % 8 7% 8 7% 7 6% 7 6% 6 5% Receptor % 8 7% 9 8% 12 10% 12 10% 11 9% Receptor % 13 11% 13 11% 13 11% 13 11% 12 10% Receptor % 7 6% 7 6% 10 8% 10 8% 12 10% Receptor % 17 14% 17 14% 14 12% 14 12% 23 19% Receptor % 10 8% 10 8% 10 8% 10 8% 18 15% Receptor % 9 8% 9 8% 16 13% 16 13% 15 13% Receptor % 11 9% 10 8% 22 18% 22 18% 17 14% Receptor % 9 8% 9 8% 16 13% 16 13% 16 13% Receptor % 21 18% 21 18% 19 16% 18 15% 17 14% Receptor % 23 19% 23 19% 18 15% 18 15% 17 14% Receptor % 24 20% 24 20% 28 23% 28 23% 20 17% Receptor % 29 24% 29 24% 29 24% 29 24% 29 24% Receptor % 46 38% 46 38% 46 38% 46 38% 46 38% Receptor % 51 43% 51 43% 51 43% 51 43% 51 43% Receptor % 65 54% 65 54% 65 54% 65 54% 65 54% Receptor % 61 51% 61 51% 61 51% 61 51% 60 50% Receptor % 74 62% 74 62% 74 62% 74 62% 74 62% Receptor % 84 70% 84 70% 83 69% 83 69% 83 69% Receptor % % % % % % Receptor % 69 58% 70 58% 75 63% 76 63% 68 57% Receptor % 71 59% 71 59% 71 59% 71 59% 65 54% Receptor % 82 68% 82 68% 79 66% 79 66% 78 65% Receptor % 34 28% 34 28% 28 23% 28 23% 28 23% Receptor % 19 16% 19 16% 16 13% 16 13% 16 13% Notes: [1] Refers to any point at or beyond the facility s property boundary. The values presented for the maximum off-property receptor include removal of meteorological anomalies. [2] Receptor numbers refer to residential receptor locations, as outlined in Section 3 of this report. Values presented do not include removal of meteorological anomalies, and are therefore more conservative than the values presented for the maximum off-site concentration. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 16

19 10. GUIDANCE ON BEST MANAGEMENT PRACTICES FOR DUST The Acton Quarry s Best Management Practices Plan (BMP), prepared in accordance with recommendations in MOE Guideline A10, is provided as Attachment 2. As per MOE requirements, the BMP contains details regarding the sources of fugitive dust at the facility, control measures, an implementation plan and schedule, and a description of the inspection and maintenance practices as well as monitoring and record keeping. 11. CONCLUSION & RECOMMENDATIONS Based on our ESDM report set out in Attachment 1, and assuming implementation of the dust control measures set out in Attachment 2 of this report, we conclude that the proposed extension will comply with the provincial regulation on local air quality (O. Reg. 419/05), and will have acceptable air quality impacts. For the purposes of the site plan notes, the prescribed conditions contained within Provincial Standards under the Aggregate Resources Act cover all of the dust control measures needed at the site in a general way and are acceptable for the purposes of the licence. The relevant prescribed conditions are as follows. 1. Dust will be mitigated on-site. 2. Water or another provincially approved dust suppressant will be applied to internal haul roads and processing areas as often as required to mitigate dust. 3. Processing equipment will be equipped with dust suppressing or collection devices, where the equipment creates dust and is being operated within 300 metres of a sensitive receptor. 4. If required, a Certificate of Approval will be obtained for processing equipment to be used on site, prior to operation of the plant. Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D Page 17

20 The Certificate of Approval, under item 4 above, will include a Best Management Practices (BMP) Plan for dust that spells out the dust mitigation measures in greater detail, as per Attachment 2. The operator will prepare and implement this BMP Plan, and a copy will be kept at the site office. Page 18 Air Quality Assessment December 1, 2008 Dufferin Aggregates Acton Quarry Extension Halton Hills - Project W D

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23 Wind Rose from Pearson International Airport, Toronto, Ontario Figure No.: 2 Acton Quarry Extension - Halton Hills, Ontario Project #W D Date: Aug 22, 2008

24 Wind Rose from Waterloo International Airport, Waterloo, Ontario Figure No.: 3 Acton Quarry Extension - Halton Hills, Ontario Project #W D Date: Aug 22, 2008

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29 ATTACHMENT 1

30 ATTACHMENT 1 EMISSION SUMMARY AND DISPERSION MODELLING REPORT DUFFERIN AGGREGATES ACTON QUARRY EXTENSION HALTON HILLS, ONTARIO Project Number: #W D December 1, 2008 SUBMITTED TO: SUBMITTED BY: Andrea Bourrie, MCIP, RPP Property & Resource Manager Dufferin Aggregates 2300 Steeles Avenue W. 4 th Floor Concord, ON L4K 5X6 RWDI AIR Inc. Consulting Engineers & Scientists 650 Woodlawn Road West Guelph, Ontario N1K 1B8 P: (519) F: (519) Senior Engineer: Project Manager Specialist: Project Director: Companion studies: Brian Sulley, B. A. Sc., P.Eng. Nigel M. Taylor, M.Sc., CCEP Mike Lepage, M.S., CCM, ACM Acoustic Assessment Report (Prepared by Aercoustics Engineering Limited)

31 TABLE OF CONTENTS 1. INTRODUCTION AND FACILITY DESCRIPTION Purpose and Scope of ESDM Report Description of Processes and NAICS Code(s) Description of Products and Raw Materials Process Flow Diagram Operating Schedule Hours of Operation Phase 4 Production and Shipping Rates Phases 5, 6 & 7 Production and Shipping Rates INITIAL IDENTIFICATION OF SOURCES AND CONTAMINANTS Phase Phases 5, 6 & All Phases ASSESSMENT OF THE SIGNIFICANCE OF CONTAMINANTS AND SOURCES Identification of Negligible Contaminants and Sources Rationale for Assessment OPERATING CONDITIONS, EMISSION ESTIMATING AND DATA QUALITY Description of Operating Conditions Explanation of Method Used to Calculate the Emission Rate Processing Operations Bulk Material Handling (Drop Operations) Diesel-Fired Generating Equipment Sample Calculation for Each Method Processing Operations Bulk Material Handling (Drop Operations) Diesel-Fired Generating Equipment Assessment of Data Quality for each Emission Rate SOURCE SUMMARY TABLE AND PROPERTY PLAN Source Summary Table Site Plan (scalable) DISPERSION MODELLING Dispersion Modelling Input Summary Table Meteorological Conditions Area of Modelling Coverage Stack Height for Certain New Sources of Contaminant Terrain Data Averaging Periods Used Land Use Zoning Designation Plan Dispersion Modelling Input and Output Files EMISSION SUMMARY TABLE AND CONCLUSIONS Emission Summary Table Assessment of Contaminants with no MOE POI Limits Conclusions Phase Phases 5, 6 & Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

32 LIST OF TABLES 2.1. Source and Contaminants Identification Table 5.1 Source Summary Table 6.1 Dispersion Modelling Input Summary Table 7.1 Emission Summary Table LIST OF FIGURES 1.4A Process Flow Diagram General Plant Operations 1.4B Process Flow Diagram Phase 4 Permanent processing plant Daytime Operations 1.4C Process Flow Diagram Phase 4 Permanent processing plant Daytime Operations 1.4D Process Flow Diagram Phases 5, 6 & 6 Permanent processing plant Daytime Operations 1.4E Process Flow Diagram Phases 5, 6 & 6 Permanent processing plant Evening Operations 1.4F Process Flow Diagram Phases 5, 6 & 6 Portable Plant Daytime Operations 5.2 Site Plan 6.2 Land Use Zoning Designation Plan LIST OF APPENDICES APPENDIX A: Dispersion Modelling Input & Output Files APPENDIX B: Emission Estimates Phase 4 Permanent Plant Daytime Operations APPENDIX C: Emission Estimates Phase 4 Permanent Plant Evening Operations APPENDIX D: Emission Estimates Phases 5, 6, & 7 Permanent Plant Daytime Operations APPENDIX E: Emission Estimates Phases 5, 6, & 7 Permanent Plant Evening Operations APPENDIX F: Emission Estimates Phases 5, 6, & 7 Portable Plant Daytime Operations Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

33 1. INTRODUCTION AND FACILITY DESCRIPTION 1.1 Purpose and Scope of ESDM Report This Emission Summary and Dispersion Modelling (ESDM) report is prepared to demonstrate compliance with Schedule 3 standards under section 20 of Ontario Regulation 419/05, for the proposed extension of operations (the proposed extension) at the Dufferin Aggregates Acton Quarry (the facility). The facility is located at Churchill Road, in the Town of Halton Hills, Ontario. 1.2 Description of Processes and NAICS Code(s) The facility is broken into several geographical areas called phases, as shown in Figure 5.2. Extraction of Phase 1 and 2 have generally been completed and extraction in Phase 3 is currently in progress. The proposed extension involves extraction in Phases 4 through 7. The facility is an aggregate extraction and processing operation. Drilling and blasting operations take place at the working face. Front end loaders load material from the working face onto quarry trucks, which haul the material to either the permanent processing plant (referred to as the Phase 1 Processing Area on Figure 5.2A) located in Phase 1, or a portable plant (referred to as PLNT_P5, PLNT_P6, and PLNT_P7 on Figure 5.2A) to be located in either Phase 5, 6 or 7, where it is crushed, screened, washed, classified, and stockpiled for shipment off-site. Processed aggregate is loaded onto highway trucks of various configurations from the stockpiles located in various areas of the facility. Front-end loaders are used to load the trucks and keep the stockpile areas organized. The permanent processing plant consists of crushers, screens, a wash plant and associated conveyors & stackers. The portable processing plant will consist of crushers, screens, and associated conveyors & stackers, and may include a wash plant. Ancillary processes at the site include fuel storage for on-site vehicles and maintenance welding. The NAICS code for the facility is , Limestone Mining and Quarrying. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 1

34 1.3 Description of Products and Raw Materials The Acton Quarry produces finished dolostone products for uses such as asphalt, readymix and road base applications. The raw material is dolostone obtained from the quarry portions of the facility in Phases 4, 5, 6 and 7, once the existing reserves in Phases 2 and 3 are exhausted. In addition, diesel fuel may be required for diesel-fired generating equipment associated with a portable processing plant in Phases 5, 6 or 7. The Acton Quarry is proposing to extend its extraction boundaries to prolong the life of the facility by increasing the reserves available for extraction. The total annual extraction rate will remain at 4 million tonnes per year. Hourly and daily production and shipping rates vary during the different phases of the proposed extension. This is to ensure compliance with air quality regulations and / or noise guidelines. This is discussed in detail in Section 1.5. The facility has the capacity to be able to ship more material that it can process, as the peak shipping rate reflects periods of high demand. The typical hourly shipping rates will often be lower than the processing rate, but during periods of extremely high demand, the Acton Quarry requires the ability to ship large volumes of material. 1.4 Process Flow Diagram The typical process flow diagrams for the permanent and portable plants are shown in the following figures: Figure 1.4A: Overview of Major Operations Figure 1.4B: Phase 4, Daytime Operations Permanent Plant Figure 1.4C: Phase 4, Evening Operations Permanent Plant Figure 1.4D: Phases 5, 6 & 7 Daytime Operations Permanent Plant Figure 1.4E: Phases 5, 6 & 7 Evening Operations Permanent Plant Figure 1.4F: Phases 5, 6 & 7 Daytime Operations - Typical Portable Plant Page 2 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

35 It should be noted that at any time, the precise flow of material may change between different pieces of processing equipment, but the overall maximum processing rate remains constant. 1.5 Operating Schedule The hours of operation for the facility vary depending on the process, and on market requirements. Specifically, large MTO projects may require shipping activities to take place on a 24-hour basis. The hourly processing and shipping rates vary depending on the phase to help ensure compliance with air quality regulations and / or noise guidelines. The following sections provide details on the hour of operation for the facility and the processing and shipping rates for each phase Hours of Operation Operation Monday - Friday Saturday Sunday Drilling 0700h to 1900h 0700h to 1900h No operation Extraction 0545h to 2330h 0545h to 2330h No operation Permanent processing plant 0545h to 2330h 0545h to 2330h No operation Portable Processing Plant 0700h to 1900h 0700h to 1900h No operation Shipping 4 th Line 0600h to 1700h 0600h to 1200h No shipping Hwy h to 1900h 0600h to 1600h No shipping Shipping (MTO projects) 4 th Line 0600h to 1700h 0600h to 1700h 0600h to 1200h Hwy hours 24 hours 24 hours There is one additional operational restriction of the permanent processing plant. There shall be no concurrent operation of the permanent processing plant and the shipment activity prior to 0700h and after 1900h. For the purposes of this assessment the it is assumed that the facility is operating under the MTO project shipping scenario. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 3

36 1.5.2 Phase 4 Production and Shipping Rates During Phase 4 of the proposed extension, the permanent processing plant will have a maximum processing capacity of up to 1900 tonnes per hour during daytime hours (0545h to 1900h), and 1,600 tonnes per hour during the late evening (1900h to 2330h), with no production during the night time or early morning hours (2330h to 0545h). The peak shipping capacity during Phase 4 is approximately 4,550 tonnes per hour during the daytime hours (0700h to 1900h), 1,680 tonnes per hour during the night time hours (1900h to 0600h), and 3,325 tonnes per hour during the early morning (0600h to 0700h). If the permanent processing plant is operating between 1900h and 0700h, no shipping may take place. There is no portable plant proposed for Phase 4 operations Phases 5, 6 & 7 Production and Shipping Rates During Phases 5, 6 and 7 of the proposed extension, the permanent processing plant will have a maximum processing capacity of up to 1900 tonnes per hour during daytime hours (0545h to 1900h), and 1,600 tonnes per hour during the late evening (1900h to 2330h), with no production during the night time or early morning hours (2330h to 0545h). The proposed portable plant will have a processing capacity of up to 800 tonnes per hour during daytime hours only (0700h to 1900h). The peak shipping capacity during Phases 5, 6 and 7 is approximately 4,550 tonnes per hour during the daytime hours (0700h to 1900h), 1,680 tonnes per hour during the night time hours (1900h to 0600h), and 3,325 tonnes per hour during the early morning (0600h to 0700h). If the permanent processing plant is operating between 1900h and 0700h, no shipping may take place. Page 4 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

37 2. INITIAL IDENTIFICATION OF SOURCES AND CONTAMINANTS Table 2.1 provides the Source and Contaminants Identification Table. A list of the sources included in this ESDM Report requiring approval is provided below, separated according the different phases of operations under the proposed extension: 2.1 Phase 4 The following sources will operate during Phase 4 of the proposed extension. Loading of raw material by the front-end loader into the quarry trucks at the working face, at the hourly rate indicated in Section 1.5; Dumping of raw materials from the quarry trucks at the permanent processing plant, at the hourly rate indicated in Section 1.5; Processing of aggregate in the permanent processing plant, including crushers, screens, a wash plant and associated conveyors, stackers and stockpiles, at the hourly rate indicated in Section 1.5; and, Loading of finished aggregate by front-end loaders into highway trucks, at the hourly rate indicated in Section Phases 5, 6 & 7 The following sources will operate during Phases 5, 6 & 7 of the proposed extension. There will be a maximum of one portable plant operating at the facility at any given time, in addition to the permanent processing plant. Loading of raw material by the front-end loader into the quarry trucks at the working face, at the hourly rate indicated in Section 1.5; Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 5

38 Dumping of raw materials from the quarry trucks at the permanent processing plant, at the hourly rate indicated in Section 1.5; Processing of aggregate in the permanent processing plant, including crushers, screens, a wash plant and associated conveyors, stackers and stockpiles, at the hourly rate indicated in Section 1.5; Dumping of raw materials from the quarry trucks at the portable plant, at the hourly rate indicated in Section 1.5; Processing of aggregate in the portable plant, including crushers, screens, a wash plant and associated conveyors, stackers and stockpiles, at the hourly rate indicated in Section 1.5; The potential use of diesel-fired electrical generating equipment to provide power for the portable plant, in lieu of potential connection to the hydroelectric grid, assumed to be equivalent to a 2,250 kw generator set for the purposes of this assessment; and, Loading of finished aggregate by front-end loaders into highway trucks, at the hourly rate indicated in Section All Phases The following sources will operate during all phases of the proposed extension: A parts washer and maintenance welding station for minor repair of equipment and vehicles; Fuel storage tanks and facilities used for fuelling on-site vehicles; Page 6 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

39 3. ASSESSMENT OF THE SIGNIFICANCE OF CONTAMINANTS AND SOURCES 3.1 Identification of Negligible Contaminants and Sources Suspended particulate matter (SPM) was the only contaminant identified with respect to the facility. In addition, the following sources were determined to be insignificant: Maintenance welding station; Parts washer for the maintenance shop; On-site storage tanks and facilities used for fuelling on-site vehicles; Wash plants in the permanent processing plant and portable plant; Overburden stripping at the quarry active face; Blasting at the quarry active face; On-site paved and unpaved roadways; Aggregate storage piles located on-site; and, Conveyors, feeders and bins associated with screens or crushers. Emissions of carbon monoxide and suspended particulate matter (SPM) from the diesel-fired generator set. 3.2 Rationale for Assessment Table B-3 of MOE Guideline A10, Procedure for Preparing an ESDM Report, Version 2.0, July 2005, lists specific examples of sources that emit contaminants in negligible amounts. Maintenance welding stations, parts washers for maintenance shops, and on-site storage tanks and facilities used for fuelling on-site vehicles are all listed on Table B-3 and were deemed to be negligible for the purposes of this assessment. The wash plant is saturated with water, therefore it is not considered to be a significant source of SPM emissions. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 7

40 The stripping of overburden in preparation for aggregate extraction will take place onsite, but is expected to occur over brief time intervals. Due to the infrequency and short duration of the activity and the relatively high natural moisture content of the overburden being handled, SPM emissions that result from stripping activities were deemed insignificant. Blasting will occur in accordance with Provincial Standards, and will not occur on holiday or between the hours of 6 pm on any day and 8 am on the following day. Due to the infrequency and short duration of the activity and the relatively high natural moisture content of the aggregate being blasted, SPM emissions that result from blasting activities were deemed insignificant. Dufferin Aggregates will develop a Best Management Practice Plan, which will serve as a guideline for dust management practices at the facility. With the implementation of this plan, the facility is exempt from assessing SPM emissions from paved roadways, unpaved roadways, and aggregate storage piles located on-site, as per guidance in Section of the Guideline A10. The emission factors for crushers and screens in AP-42 include emissions from conveyor drop points, bins and / or feeders that serve that piece of equipment, or that are fed directly from it. As a result, these sources are considered to be insignificant. Although shown in the process flow diagram and equipment inventory, emissions from these sources were considered as being fully controlled, as they are included in the emission estimate for the associated crusher or screen. The major emissions from the diesel generator with respect to this assessment are emissions of nitrogen oxides. Emissions of carbon monoxide are approximately one order of magnitude lower than emissions of nitrogen oxides, and the O. Reg. 419/05 standard for carbon monoxide is an order of magnitude higher than the corresponding standard for nitrogen oxides, therefore carbon monoxide was considered to be insignificant relative to nitrogen oxides. Page 8 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

41 4. OPERATING CONDITIONS, EMISSION ESTIMATING AND DATA QUALITY 4.1 Description of Operating Conditions Section 10 of O. Reg. 419/05 states that, for the purposes of this application, an acceptable operating scenario to consider is one that would result, for a given contaminant, in the highest concentration of that contaminant at a point of impingement that the facility is capable of causing. To satisfy this requirement, a maximum production scenario was developed in consultation with Dufferin. This scenario examined the maximum processing rate and peak shipping rate that the facility could be expected to achieve, and is intended to reflect the maximum predicted off-site concentrations resulting from the facility s operations. This scenario reflects operations during a large MTO project, when shipping during the night-time would be required. Analysis indicated that processing operations yielded the highest maximum predicted off-site concentrations, processing operations were assumed to take precedence over shipping during night-time and early morning hours. The modelling scenario considered the following activities: Drilling operations from 0700h to 1900h; Extraction operations from 0545h to 2330; Processing operations at the permanent plant from 0545h until 2330h; Processing at the portable plant (Phases 5, 6, & 7 only) from 0700h to 1900h; and, Shipping operations from 0700h to 1900h and again from 2330h to 0545h (there can be no concurrent operation of the permanent plant and shipment activity prior to 0700h and 1900h). Section 1.5 provides the hourly production and shipping rates for each process used for the dispersion modelling analysis. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 9

42 4.2 Explanation of Method Used to Calculate the Emission Rate Emission rates from sources included in this assessment were determined using the following methodologies. Information supporting these estimates is provided in the following Appendices: Appendix B: Phase 4, Daytime Operations Permanent Plant Appendix C: Phase 4, Evening Operations Permanent Plant Appendix D: Phases 5, 6 & 7 Daytime Operations Permanent Plant Appendix E: Phases 5, 6 & 7 Evening Operations Permanent Plant Appendix F: Phases 5, 6 & 7 Daytime Operations - Typical Portable Plant Processing Operations Processing operations include quarry truck loading, crushing, screening and conveying of aggregate material. Emission factors from Chapter of AP-42, Crushed Stone Processing & Pulverized Mineral Processing, were used to predict the emission rates from the processing operations. For the primary and secondary crushers, AP-42 does not provide an emission factor for SPM emissions. Thus, the emission factor for tertiary crushing was used, which is considered to be a conservative assumption. Controlled emission factors were used for all other processing plant equipment in order to account for the high natural moisture content of the material processed (2.6% to 3%). This moisture content falls within the range of values reported for use of controlled emission factors in AP-42 (wet suppression resulting in a moisture content of 0.55% to 2.88%). For equipment located inside a full enclosure, an additional control efficiency of 90% was applied. In the case where partial enclosures exist, this additional control efficiency was set to 70%. Page 10 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

43 4.2.2 Bulk Material Handling (Drop Operations) Bulk material handling operations include the loading of highway trucks for shipping from the various storage areas located on-site. Emission factors from Chapter of the U.S. EPA Compilation of Air Pollutant Emission Factors (AP-42), Aggregate Handling and Storage Piles, were used to predict the emission rates from the bulk material handling. These emission factors are dependent on wind speed. To accurately reflect the change in emissions with changes in wind speed, hourly wind speeds from the meteorological data file were used in conjunction with the emission factor to develop a file of hourly emission rates for use in the dispersion modelling analysis. Dufferin Aggregates provided typical measured moisture content values for various materials handled or processed at the facility. The values provided by Dufferin are in the range of 2.6% to 3%, and as a conservative assumption, a value of 2.6% was used to calculate emissions from all bulk material handling. No additional control efficiencies were applied to these sources. In addition, the source identified as LOADOUT2 normally handles clear washed stone, which consists of processed stone that has been washed to be free of silt. Emissions of SPM from handling of clear washed stone are low compared to unwashed material. Therefore a control efficiency of 90% has been applied to handling of material at this source location. This is a more conservative approach than the common practice of removing clear washed stone handling from an inventory completely (thus assuming 100% control). The amount of processed aggregate handled at each location is based on truck traffic information provided by Dufferin. This report provides estimated peak hourly truck traffic data for the facility, and breaks down the total volume between nine distinct locations within the facility. Details on the truck traffic at each location are provided in Appendices B through F. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 11

44 Although the actual average shipping rate will generally be lower, peak values have been used for the entire modelling period as a conservative assumption to assess the maximum peak hourly traffic that the facility could experience. During the early spring, the facility operates under what is called the half load shipping season, where fully loaded trucks are not allowed to use 4 th Line Road. Empty trucks may use this roadway, but fully loaded trucks must use 22 nd Side Road. As peak total traffic volumes are much less during this time period (42 trucks per hour), the full load season traffic volume was used for modelling purposes as it provided a more conservative estimate of potential impacts. As final conservative assumption, each truck is considered to have a 35 tonne capacity, representing the mix of vehicles typically used to ship aggregates from the facility Diesel-Fired Generating Equipment The exact size and make of the diesel-fired electrical generating equipment associated with the portable plant was assumed, based on the size of the portable plant, based on literature and observations at portable plants at other facilities. For the purposes of this assessment, a Caterpillar generator-set was selected, as it is typical of similar units in operation. The 2,250 kw unit is also the largest standard size of prime power generating set listed by Caterpillar, and is as large or larger than similar equipment at other facilities. A specification sheet is provided in Appendix F. Emission rates were determined using the factors provided on the specification sheet provided, and the engine output horsepower, assuming a conservative generator efficiency of 80%. These calculations are provided in Appendix F. Page 12 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

45 4.3 Sample Calculation for Each Method Processing Operations The processing operation emission rates are dependent on the amount of material being handled as well as the control efficiency. Below are some example calculations for the processing operations, reflective of daytime operations. Refer to Appendices B through F for a summary of emission rate calculations for processing operations and the details needed to calculate them. Primary Crusher (CR1-60) Emission Rate: Mg = 1687 hr aggregate kg Mg SPM aggregate 1 90% 100% 1000g kg hr g = s s SPM Simplicity Screen (S1-70) Emission Rate: Mg = 378 hr aggregate kg Mg SPM aggregate 1000g 1kg hr g = s SPM It should be noted that the emission factor indicated in the sample calculation above for CR1-60 is the controlled emission factor from AP-42. The additional, supplemental control of 90% is applied to that factor. In the Appendices, this step is not shown explicitly, and is shown here for clarity Bulk Material Handling (Drop Operations) A sample calculation of SPM emissions from loading highway trucks at the location identified as LOADOUT1, located in the lower portion of the processing plant, during the daytime (maximum) shipping period in Phase 4, is provided below. The particle size multiplier (k), varies with aerodynamic particle size range, and for particles that are less than 30 µm, k = The moisture value was set at 2.6% as a conservative assumption based on moisture content values measured and provide by Dufferin. Hourly truck traffic was estimated to be 2 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 13

46 pass per hour, or 1 round trip per hour at this location. With an assumed payload of 35 tonnes per hour, this gives a bulk-handling rate of approximately 35 tonnes (Mg) per hour. For this calculation, a sample wind speed of 5 m/s was chosen. Emission rates for shipping from the five other bulk-handling locations were calculated analogously. A summary is provided in Appendices B through F. Material Handling Emission Factor: U 2.2 E ( kg / Mg) = k(0.0016) M 2 E = emission factor k = particle size multiplier (dimensionless). U = mean wind speed, meters per second (m/s) M = material moisture content (%) E = 0.74*(0.0016) = kg Mg SPM aggregate Drop Emission Rate: Mg 35 hr aggregate * kg Mg SPM aggregate *1000 g kg 1 * 3600 hr s g = s SPM Diesel-Fired Generating Equipment Sample calculations for this source are provided in Appendix F. Page 14 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

47 4.4 Assessment of Data Quality for each Emission Rate The assessment of data quality for each emission rate is provided in the Source Summary Table, and is based on the AP-42 data quality ratings. In summary, the calculated emission rates for the processing operations had a data quality rating of E, while the calculated emission rates for the bulk material handling / transfer sources had a data quality rating of B. The emission factor for bulk material handling was downgraded from a rating of A as the site-specific silt content was not used. Thus, as per guidance in the Procedure for Preparing an ESDM Report, Version 2.0, July 2005 the data quality of the processing plant emission estimates is Marginal, while the data quality of the bulk handling emission estimates is Above Average. 5. SOURCE SUMMARY TABLE AND PROPERTY PLAN 5.1 Source Summary Table Table 5.1 in the Tables Section provides the Source Summary Table for the facility. 5.2 Site Plan (scalable) Figure 5.2 in the Figures Section provides the site plan for the facility. This figure is provided at two different scales to clearly show the source locations. 6. DISPERSION MODELLING Dispersion modelling for the facility was conducted using the AERMOD dispersion model to predict 24-hour average SPM concentrations at points of impingement along the property line and beyond. Results from the model run are presented in Table 7.1. Sources were grouped into several volume and area sources to simplify the modelling requirements and to account for the changing location of many sources. Emissions from the processing plant are generally concentrated around the major pieces of equipment, whereas Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 15

48 emissions from stockpiling could take place anywhere in the stockpile areas. Emissions from bulk material handling reflect the locations identified in the Acoustic Assessment Report. In general, source dimensions were based on information obtained from site plans, observations during site visits, aerial photos, and typical vehicle dimensions, and are consistent with guidance from the National Sand Stone and Gravel Association. 1 The exact equipment layout for the portable plant depends on the supplier of the equipment, which may potentially be provided by a third-party contractor. Due to this, a single volume source has been used to represent the portable plant, with dimensions representative of portable plants at other facilities throughout Ontario. The diesel-fired generator set was modelled as a short point source located on the roof of a small building, reflective of a typical trailer mounted unit. Due to the size of the proposed extraction in Phases 5 and 6, drilling and loading of quarry trucks in these phases were modelled in several locations. The East and West designations were used to identify modelled locations, and are exclusive of one another (i.e., operations will occur at either location, but not both). As a conservative approach, these sources were modelled close to the nearest property line. It should be noted that AERMOD can only model 1-hour periods when considering emissions that vary by hour. Since the modelling scenario considered the permanent plant ceasing operation at 2330h, for example, the modelling analysis uses 2400h as the time that this change in operations occurs. RWDI does not see this as being significant to the modelling analysis, but does make note of this minor discrepancy. 1 Modeling Fugitive Dust Sources, National Stone, Sand & Gravel Association, Alexandria, VA., Page 16 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

49 Although operations in Phases 4 through 7 occur below grade, neither the open pit source type, nor the depletion algorithms available as non-default options in the AERMOD model, were used in the assessment. This simplification adds a significant degree of conservatism to the modelling. 6.1 Dispersion Modelling Input Summary Table Table 6.1 in the Tables Section provides the Dispersion Modelling Input Summary Table for the facility. Additional information on specific elements of the modelling analysis is provided in the following sections Meteorological Conditions The facility is located in the Town of Halton Hills, Ontario. The MOE meteorological data recommended for this site is for the Central Region. This includes surface data from Toronto, Ontario and upper air data from Buffalo, New York. The raw data for these sites, available from the MOE, were processed using the AERMET pre-processor to account for the unique land use characteristics surrounding the facility, which is comprised primarily of agricultural areas and forest. Due to the size of the facility however, the facility itself was also considered as a land use characteristic. In accordance with Section 6.6 of MOE Guideline A11, the Air Dispersion Modelling Guideline for Ontario, meteorological anomalies were eliminated from the modelling results. This consisted of discarding the highest 24-hour average concentration for each year in the meteorological record. This process is illustrated on the partial printout of the AERMOD output files provided in Appendix A. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 17

50 6.1.2 Area of Modelling Coverage The area of modelling coverage was designed to meet the requirements outlined in O. Reg. 419/05, s 14. A multi-tiered receptor grid was developed with reference to Section 7.2 of the Air Dispersion Modelling Guideline for Ontario, Version 1.0, July 2005; therefore, interval spacing was dependent on the receptor distance from on-site sources Stack Height for Certain New Sources of Contaminant With the exception of the proposed diesel generator for the portable plant in Phases 5, 6, and 7, on-site emissions are not routed through stacks; therefore, this section does not apply to those sources. The diesel generator was modelled as a trailer-mounted unit, with a short stack extending through the roof of the trailer (less than twice the building height above grade). Therefore, this section does not apply to this analysis Terrain Data Terrain information for the area surrounding the facility was obtained from the MOE Ontario Digital Elevation Model Data web site. The terrain data is based on the North American Datum 1983 (NAD83) horizontal reference datum. These data were run through the AERMAP terrain pre-processor to estimate base elevations for receptors and to help the model account for changes in elevation of the surrounding terrain. Base elevations for sources are based on field observations and are assumed to be on the quarry floor Averaging Periods Used A 24-hour averaging time was used for SPM. This is consistent with the Schedule 3 standards in O. Reg. 419/05. Page 18 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

51 6.2 Land Use Zoning Figure 6.2 provides zoning documentation for the area. The facility is located on Lots 21, 22, 23 and 24, Concession 3 and 4, Town of Halton Hills (former Geographic Township of Esquesting) in the Regional Municipality of Halton. Based on the Town of Halton Hills Zoning By-Law, the facility is surrounded by Rural (RU) zoning. The majority of the facility is located within the Niagara Escarpment Development Control Area and zoning does not apply. The lands outside of development control are zoned rural with a portion of the existing quarry (Phase 3) zoned Industrial M Dispersion Modelling Input and Output Files Appendix A provides a CD with the AERMOD input, output and supporting files for both Phase 4 and Phases 5, 6 and 7 (these phases were combined in a single model run). 7. EMISSION SUMMARY TABLE AND CONCLUSIONS 7.1 Emission Summary Table Results from the model runs for both scenarios are presented in Table Assessment of Contaminants with no MOE POI Limits All of the contaminants identified in the emission inventory have established POI Limits. Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D Page 19

52 7.3 Conclusions Phase 4 Concentrations at points of impingement were predicted using the AERMOD dispersion model. Modelling input and output files have been provided on a compact disc included in Appendix A. Predicted concentrations of the contaminant of significance (suspended particulate matter) was found to be less than the Point of Impingement (POI) limit at all receptors in the area. The contaminant with the greatest percentage of the O. Reg. 419/05 Standard was suspended particulate matter, which was predicted to be 98% of the 24-hour Schedule 3 Standard. Therefore, Dufferin is expected to be in compliance with Ontario Regulation 419/05 requirements Phases 5, 6 & 7 Concentrations at points of impingement were predicted using the AERMOD dispersion model. Modelling input and output files have been provided on a compact disc included in Appendix A. Predicted concentrations of the contaminant of significance (suspended particulate matter) was found to be less than the Point of Impingement (POI) limit at all receptors in the area The contaminant with the greatest percentage of the O. Reg. 419/05 Standard was suspended particulate matter, which was predicted to be 95% of the 24-hour Schedule 3 Standard, during operations in Phase 6. Therefore, Dufferin is expected to be in compliance with Ontario Regulation 419/05 requirements. Page 20 Emission Summary and Dispersion Modelling Report December 1, 2008 Acton Quarry Extension - Halton Hills, Ontario - Project W D

53

54 2.1 Sources and Contaminant Identification Table RWDI Project W D Source Information Expected Contaminants Included in Significant? Reference Source ID Source Description General Modelling? (optional) (optional) or Title Location (yes / no) (yes / no) Working Face OVERBRDN Stripping of overburden at working face Phase 4, 5, 6 or 7 working face suspended particulate matter no no Section 3.2 BLASTING Blasting at working face Phase 4, 5, 6 or 7 working face suspended particulate matter no no Section 3.2 DRLL Drilling at working face Phase 4, 5, 6 or 7 working face suspended particulate matter yes yes [1] PTL Quarry truck loading Phase 4, 5, 6 or 7 working face suspended particulate matter yes yes [1] Permanent Plant G1-60 Grizzly Phase 1 permanent plant suspended particulate matter no no Appendix B2 G2-60 Grizzly Phase 1 permanent plant suspended particulate matter no no Appendix B2 CR1-60 Primary crusher Phase 1 permanent plant suspended particulate matter yes yes F1-60 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 C1-60 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C2-60 Conveyor Phase 1 permanent plant suspended particulate matter yes yes Primary Surge Primary Surge Pile / Bin Phase 1 permanent plant suspended particulate matter yes yes C5-60 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C6-60 Conveyor Phase 1 permanent plant suspended particulate matter yes yes Bin Series 60 Bin Phase 1 permanent plant suspended particulate matter yes yes F2-60 Feeder Phase 1 permanent plant suspended particulate matter yes yes C1-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C2-70 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C5-70 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 CR1-70 Primary re-crusher Phase 1 permanent plant suspended particulate matter yes yes C4-70 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C3-70 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 S1-70 Simplicity screen Phase 1 permanent plant suspended particulate matter yes yes C6-70 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C7-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C8-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C9-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C10-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C11-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C12-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C13-70 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C14-70 Stacker Phase 1 permanent plant suspended particulate matter yes yes F1-61 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 F2-61 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 F3-61 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 C1-61 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C2-61 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 S1-61 Scalping screen Phase 1 permanent plant suspended particulate matter yes yes CR1-61 Secondary crusher Phase 1 permanent plant suspended particulate matter yes yes

55 2.1 Sources and Contaminant Identification Table RWDI Project W D Source Information Expected Contaminants Included in Significant? Reference Source ID Source Description General Modelling? (optional) (optional) or Title Location (yes / no) (yes / no) C4-61 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 S3-62 Screen Phase 1 permanent plant suspended particulate matter yes yes CR1-62 Tertiary crusher Phase 1 permanent plant suspended particulate matter yes yes C3-61 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C1-62 Conveyor Phase 1 permanent plant suspended particulate matter yes yes S1-62 Screen Phase 1 permanent plant suspended particulate matter yes yes S2-62 Screen Phase 1 permanent plant suspended particulate matter yes yes C2-62 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 CR2-62 Tertiary crusher Phase 1 permanent plant suspended particulate matter yes yes C10-62 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C1-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C11-62 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C2-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes Bin Series 62 Bin Phase 1 permanent plant suspended particulate matter no no Appendix B2 C3-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C4-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C5-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C6-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C8-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C14-64 Conveyor Phase 1 permanent plant suspended particulate matter yes yes F1-63 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 F2-63 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 F3-63 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 F4-63 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 C5-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C6-63 Conveyor Phase 1 permanent plant suspended particulate matter yes yes Bin Series 63 Bin Phase 1 permanent plant suspended particulate matter no no Appendix B2 F1-61 Feeder Phase 1 permanent plant suspended particulate matter no no Appendix B2 CR1-63 Quaternary crusher Phase 1 permanent plant suspended particulate matter yes yes C15-63 Conveyor Phase 1 permanent plant suspended particulate matter yes yes S1-63 Classifying screen Phase 1 permanent plant suspended particulate matter yes yes S2-63 Classifying screen Phase 1 permanent plant suspended particulate matter yes yes S3-63 Classifying screen Phase 1 permanent plant suspended particulate matter yes yes S4-63 Classifying screen Phase 1 permanent plant suspended particulate matter yes yes C7-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C8-63 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C16-63 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C9-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C13-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C11-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2

56 2.1 Sources and Contaminant Identification Table RWDI Project W D Source Information Expected Contaminants Included in Significant? Reference Source ID Source Description General Modelling? (optional) (optional) or Title Location (yes / no) (yes / no) C1A-65 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C1-65 Conveyor Phase 1 permanent plant suspended particulate matter yes yes C10-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 Screen Series 63 Separator Phase 1 permanent plant suspended particulate matter yes yes C14-63 Conveyor Phase 1 permanent plant suspended particulate matter no no Appendix B2 C17-63 Conveyor Phase 1 permanent plant suspended particulate matter yes yes STKPL_LP Lower Plant Conveyors / Stackers Phase 1 lower plant stockpiles suspended particulate matter yes yes STKPL_UP Upper Plant Conveyors / Stackers Phase 1 upper plant stockpiles suspended particulate matter yes yes LOADOUT1 Lower Plant Truck Loading Phase 1 lower plant stockpiles suspended particulate matter yes yes LOADOUT2 Lower Plant Truck Loading Phase 1 lower plant stockpiles suspended particulate matter yes yes LOADOUT3 Lower Plant Truck Loading Phase 1 lower plant stockpiles suspended particulate matter yes yes LOADOUT4 Upper Plant Truck Loading Phase 1 lower plant stockpiles suspended particulate matter yes yes LOADOUT5 Upper Plant Truck Loading Phase 1 upper plant stockpiles suspended particulate matter yes yes LOADOUT6 Upper Plant Truck Loading Phase 1 upper plant stockpiles suspended particulate matter yes yes WP Wash Plant Phase 1 permanent plant suspended particulate matter no no Section 3.2 Portable Plant (typical configuration) F1 Feeder Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] CR1 Primary Crusher Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C1 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] S1 Primary Screen Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C2 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C3 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] CR2 Secondary Crusher Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C4 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] S2 Secondary Screen Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C6 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] S3 Tertiary Screen Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C7 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C8 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] C5 Conveyor Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] CR3 Crusher Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] LOADOUT7 Truck Loading (shipping) during Phase 5 Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] LOADOUT8 Truck Loading (shipping) during Phase 6 Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] LOADOUT9 Truck Loading (shipping) during Phase 7 Phase 5, 6 or 7 portable plant suspended particulate matter yes yes [1] GEN1 Typical Diesel Generator Set Phase 5, 6 or 7 portable plant nitrogen oxides yes yes (2,250kW unit assumed) products of combustion no no Section 3.2 WP Wash Plant Phase 5, 6 or 7 portable plant suspended particulate matter no no Section 3.2 General Facility Emissions n/a Maintenance Welding Station Maintenance Garage suspended particulate matter no no Section 3.2 n/a Parts Washer Maintenance Garage volatile organic compounds no no Section 3.2

57 2.1 Sources and Contaminant Identification Table RWDI Project W D Source Information Expected Contaminants Included in Significant? Reference Source ID Source Description General Modelling? (optional) (optional) or Title Location (yes / no) (yes / no) n/a Fuel Storage Tanks Scale House, Processing Plant volatile organic compounds no no Section 3.2 n/a On-site Paved Roadways Various On-Site Locations suspended particulate matter no yes Section 3.2 n/a On-site Unpaved Roadways Various On-Site Locations suspended particulate matter no yes Section 3.2 n/a Wind Erosion of On-site Stockpiles Various On-Site Locations suspended particulate matter no yes Section 3.2 Notes: [1] Extraction / processing / shipping operations in Phases 4, 5, 6 or 7 do not occur simultaneously. Stipping of overburden will occur in subsequent phase prior to completion of current phase (typically beginning 2 years prior to completion of current phase). Revision Date: Prepared by: BGS

58 5.1A Source Summary Table - Phase 4 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) Significant / Modelled Sources - Working Face DRLL VOLUME Drilling at working face in Phase 4 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% PTL VOLUME Quarry truck loading in Phase 4 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% Significant / Modelled Sources - Permanent Plant G1-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% G2-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-60 VOLUME Primary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% F1-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% C2-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% Primary Surge VOLUME Primary Surge Pile / Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% C5-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C6-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% Bin VOLUME Series 60 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% F2-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C1-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C2-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-70 VOLUME Primary re-crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C4-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-70 VOLUME Simplicity screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C6-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C7-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C8-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C9-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C10-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C11-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C12-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C13-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% C14-70 VOLUME Stacker n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% F1-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% C2-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-61 VOLUME Scalping screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% CR1-61 VOLUME Secondary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C4-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S3-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% CR1-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C3-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% C1-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% S1-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% S2-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.4% C2-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR2-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C10-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C11-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% C2-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% Bin VOLUME Series 62 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3%

59 5.1A Source Summary Table - Phase 4 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) C4-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C5-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C6-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C8-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C14-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% F1-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F4-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C6-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% Bin VOLUME Series 63 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F5-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-63 VOLUME Quaternary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 4% C15-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% S1-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% S2-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% S3-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% S4-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C7-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C8-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C16-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C9-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% C13-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% C11-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% C1A-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C1-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C10-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% Screen VOLUME Series 63 Separator n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C14-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C17-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% LOADOUT1 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 0.6% LOADOUT2 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 2% LOADOUT3 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 6% LOADOUT4 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 10% LOADOUT5 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 43% LOADOUT6 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 1% Total Emissions Total Total of all listed sources suspended particulate matter n/a % Notes: [1] Source ID, Source Type: should provide information on the modelling source type (e.g., Point, Area or Volume Source); the process source or sources within the modelling source (e.g., Process Line #1); and the stack or stacks within each process source. [2] Emission Estimating Technique Short-Forms are V-ST (Validated Source Test), ST (Source Test), EF (Emission Factor), MB (Mass Balance), and EC (Engineering Calculation). [3] Data Quality Categories: Highest; Above-Average; Average; and Marginal. [4] Emission rate provided reflects a wind speed of 5m/s, and daytime (peak) shipping rates [5] Coordinates reflect modelled volume & area source locations, location of individual sources within that volume / area may vary. Revision Date: Prepared by: BGS

60 5.1B Source Summary Table - Phase 4 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) Significant / Modelled Sources - Working Face DRLL VOLUME Drilling at working face in Phase 4 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.4% PTL VOLUME Quarry truck loading in Phase 4 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.6% Significant / Modelled Sources - Permanent Plant G1-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% G2-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-60 VOLUME Primary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% F1-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% Primary Surge VOLUME Primary Surge Pile / Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C5-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C6-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% Bin VOLUME Series 60 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% F2-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C1-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C2-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-70 VOLUME Primary re-crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C4-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-70 VOLUME Simplicity screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 9% C6-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C7-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C8-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C9-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C10-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C11-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C12-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C13-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% C14-70 VOLUME Stacker n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% F1-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-61 VOLUME Scalping screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% CR1-61 VOLUME Secondary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 4% C4-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S3-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% CR1-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C3-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% S1-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% S2-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C2-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR2-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C10-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C11-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% Bin VOLUME Series 62 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8%

61 5.1B Source Summary Table - Phase 4 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) C4-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C5-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C6-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C8-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C14-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% F1-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F4-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C6-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% Bin VOLUME Series 63 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F5-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-63 VOLUME Quaternary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 13% C15-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% S1-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S2-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S3-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S4-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% C7-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C8-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C16-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C9-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C13-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C11-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1A-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C1-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C10-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% Screen VOLUME Series 63 Separator n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 6% C14-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C17-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% LOADOUT1 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT2 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT3 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT4 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT5 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT6 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% Total Emissions Total Total of all listed sources suspended particulate matter n/a % Notes: [1] Source ID, Source Type: should provide information on the modelling source type (e.g., Point, Area or Volume Source); the process source or sources within the modelling source (e.g., Process Line #1); and the stack or stacks within each process source. [2] Emission Estimating Technique Short-Forms are V-ST (Validated Source Test), ST (Source Test), EF (Emission Factor), MB (Mass Balance), and EC (Engineering Calculation). [3] Data Quality Categories: Highest; Above-Average; Average; and Marginal. [4] No shipping between 1900h and 0700h when the permanent plant is operating. [5] Coordinates reflect modelled volume & area source locations, location of individual sources within that volume / area may vary. Revision Date: Prepared by: BGS

62 5.1C Source Summary Table - Phases 5, 6 & 7 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) Significant / Modelled Sources - Working Face DRLL VOLUME Drilling at working face in Phase 5, 6 or 7 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% PTL VOLUME Quarry truck loading in Phase 5, 6, or 7 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% Significant / Modelled Sources - Permanent Plant G1-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% G2-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-60 VOLUME Primary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.6% F1-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% C2-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% Primary Surge VOLUME Primary Surge Pile / Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% C5-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C6-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% Bin VOLUME Series 60 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% F2-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C1-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% C2-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-70 VOLUME Primary re-crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C4-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% C3-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% S1-70 VOLUME Simplicity screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C6-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C7-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C8-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C9-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C10-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C11-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C12-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C13-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% C14-70 VOLUME Stacker n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.08% F1-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.7% C2-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-61 VOLUME Scalping screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% CR1-61 VOLUME Secondary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C4-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S3-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.4% CR1-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C3-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.03% S1-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% S2-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C2-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR2-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C10-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C11-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% C2-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% Bin VOLUME Series 62 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2%

63 5.1C Source Summary Table - Phases 5, 6 & 7 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) C4-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C5-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C6-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C8-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C14-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% F1-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F4-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C6-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% Bin VOLUME Series 63 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F5-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-63 VOLUME Quaternary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C15-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% S1-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% S2-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% S3-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% S4-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C7-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C8-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.06% C16-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.06% C9-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C13-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C11-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1A-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C1-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C10-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% Screen VOLUME Series 63 Separator n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C14-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C17-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% LOADOUT1 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT2 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 1% LOADOUT3 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 4% LOADOUT4 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 6% LOADOUT5 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 24% LOADOUT6 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 0.9% Significant / Modelled Sources - Portable Plant F1 VOLUME Feeder n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.3% CR1 VOLUME Primary Crusher n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 3% C1 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.3% S1 VOLUME Primary Screen n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 5% C2 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.08% C3 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.2% CR2 VOLUME Secondary Crusher n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 2% C4 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.3% S2 VOLUME Secondary Screen n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 4% C6 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.2% S3 VOLUME Tertiary Screen n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 4% C7 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.06% C8 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.2% C5 VOLUME Conveyor n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.04% CR3 VOLUME Crusher n/a ambient n/a n/a n/a n/a varies suspended particulate matter n/a EF Above-Average 0.3%

64 5.1C Source Summary Table - Phases 5, 6 & 7 Daytime Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) LOADOUT7 VOLUME Truck Loading (shipping) during Phase 5 [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 15% LOADOUT8 VOLUME Truck Loading (shipping) during Phase 6 [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 15% LOADOUT9 VOLUME Truck Loading (shipping) during Phase 7 [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Above-Average 15% GEN1 POINT Typical Diesel Generator Set varies suspended particulate matter n/a EF Above-Average 0.6% (2,250kW unit assumed) nitrogen oxides EF Above-Average 100% Total Emissions Total Total of all listed sources suspended particulate matter n/a % nitrogen oxides % Notes: [1] Source ID, Source Type: should provide information on the modelling source type (e.g., Point, Area or Volume Source); the process source or sources within the modelling source (e.g., Process Line #1); and the stack or stacks within each process source. [2] Emission Estimating Technique Short-Forms are V-ST (Validated Source Test), ST (Source Test), EF (Emission Factor), MB (Mass Balance), and EC (Engineering Calculation). [3] Data Quality Categories: Highest; Above-Average; Average; and Marginal. [4] Emission rate provided reflects a wind speed of 5m/s, and daytime (peak) shipping rates [5] Coordinates reflect modelled volume & area source locations, location of individual sources within that volume / area may vary. Revision Date: Prepared by: BGS

65 5.1D Source Summary Table - Phases 5, 6 & 7 Evening Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) Significant / Modelled Sources - Working Face DRLL VOLUME Drilling at working face in Phase 5, 6 or 7 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.4% PTL VOLUME Quarry truck loading in Phase 5, 6, or 7 n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.6% Significant / Modelled Sources - Permanent Plant G1-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% G2-60 VOLUME Grizzly n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-60 VOLUME Primary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% F1-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% Primary Surge VOLUME Primary Surge Pile / Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C5-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C6-60 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% Bin VOLUME Series 60 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% F2-60 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C1-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C2-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR1-70 VOLUME Primary re-crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.6% C4-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-70 VOLUME Simplicity screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 9% C6-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C7-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C8-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C9-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C10-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C11-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C12-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% C13-70 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0% C14-70 VOLUME Stacker n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.3% F1-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-61 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S1-61 VOLUME Scalping screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% CR1-61 VOLUME Secondary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 4% C4-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% S3-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% CR1-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C3-61 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.1% S1-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.9% S2-62 VOLUME Screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C2-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% CR2-62 VOLUME Tertiary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 3% C10-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 1% C11-62 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 2% C2-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% Bin VOLUME Series 62 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C3-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8%

66 5.1D Source Summary Table - Phases 5, 6 & 7 Evening Operations RWDI Project W D Source Source Source Source Data Emission Data ID [1] Type [1] Description Stack Stack Stack Stack Stack Stack Source Contaminant CAS Maximum Averaging Emission Emissions % of Volumetric Exit Inner Exit Height Height Coordinates [5] Number Emission Period Estimating Data Overall Flow Gas Diameter Velocity Above Above X Y Rate Technique [2] Quality [3] Emissions Rate Temp. Grade Roof [4] (Am³/s) (ºC) (m) (m/s) (m) (m) (m) (m) (g/s) (hours) (%) C4-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C5-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C6-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C8-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C14-64 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% F1-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F2-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F3-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% F4-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C5-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C6-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% Bin VOLUME Series 63 Bin n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% F5-63 VOLUME Feeder n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0.0% CR1-63 VOLUME Quaternary crusher n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 13% C15-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.5% S1-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S2-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S3-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% S4-63 VOLUME Classifying screen n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 7% C7-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C8-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C16-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.2% C9-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C13-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C11-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C1A-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C1-65 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.8% C10-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% Screen VOLUME Series 63 Separator n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 6% C14-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Marginal 0% C17-63 VOLUME Conveyor n/a ambient n/a n/a n/a n/a suspended particulate matter n/a EF Marginal 0.4% LOADOUT1 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT2 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT3 VOLUME Lower Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT4 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT5 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% LOADOUT6 VOLUME Upper Plant Truck Loading [4] n/a ambient n/a n/a n/a n/a suspended particulate matter n/a 0 1 EF Above-Average 0% Total Emissions Total Total of all listed sources suspended particulate matter n/a % Notes: [1] Source ID, Source Type: should provide information on the modelling source type (e.g., Point, Area or Volume Source); the process source or sources within the modelling source (e.g., Process Line #1); and the stack or stacks within each process source. [2] Emission Estimating Technique Short-Forms are V-ST (Validated Source Test), ST (Source Test), EF (Emission Factor), MB (Mass Balance), and EC (Engineering Calculation). [3] Data Quality Categories: Highest; Above-Average; Average; and Marginal. [4] No shipping between 1900h and 0700h when the permanent plant is operating. [5] Coordinates reflect modelled volume & area source locations, location of individual sources within that volume / area may vary. Revision Date: Prepared by: BGS

67 6.1 Dispersion Modelling Input Summary Table RWDI Project W D Relevant Section Title Description of How the Approved Dispersion Model was Used Section of the Regulation Section 8 Negligible Sources Please refer to Sections 3.1 and 3.2 in the report. Sources considered to be insignificant were the maintenance welding station, parts washer for the maintenance shop, on-site storage tanks and facilities used for fuelling on-site vehicles, wash plant, overburden stripping at the quarry active face, blasting at the quarry active face, on-site paved and unpaved roadways, aggregate storage piles located on-site, and emissions of CO and SPM from the diesel-fired generator set that may be used at the portable plant. Section 9 Same Structure Contamination Same Structure Contamination was not considered Section 10 Operating Conditions Please refer to Section 4.1 in the report. Several operating scenarios were investigated to examine potential impacts during different phases of the proposed extension. The modelling scenario presented considered the extraction, processing and shipping of aggregate at maximum capacity during daytime hours (0700h to 1900h), reduced processing and no loading or shipping during evening hours (1900h to 2330h), reduced shipping and no processing during nighttime hours (2230h to 0545h), and maximum processing with no shipping during the early morning (0545h to 0700h). This provides a reasonable worst case operating scenario with respect to potential air quality impacts. However, analysis indicates that the facility can operate under any scenario subject to the hours of operation & procesing rates provided in Section 1.5. Section 11 Section 12 Section 13 Section 14 Section 15 Section 16 Source of Contaminant Emission Rates Combined Effect of Assumptions for Operating Conditions and Emission Rates Meteorological Conditions Area of Modelling Coverage Stack Height for Certain New Sources of Contaminant Terrain Data Please refer to Section 4.2 in the report. Emission rates for the quarry sources were taken from AP-42 Chapter Crushed Stone Processing and Pulverized Mineral Processing and Chapter Aggregate Handling And Storage Piles. The operating conditions and emission rates (as described in the preceeding sections) were used in an approved dispersion model. The model predicted results that were less than the applicable POI Limits, therefore, no further refinements were made to either the operating conditions or emission rates. Please refer to Section in the report. The facility is located in the Town of Halton Hills, Ontario. The MOE meteorological data recommended for this site is for the Central Region. This includes surface data from Toronto, Ontario and upper air data from Buffalo, New York. The raw data for these sites, available from the MOE, were processed using the AERMET pre-processor to account for the unique land use characteristics surrounding the facility, which is comprised primarily of agricultural areas and forest. Due to the size of the facility however, the facility itself was also considered as a land use characteristic. Meteorological anomalies were removed as per Section 6.6 of Guideline A-11. Please refer to Section in the report. The area of modelling coverage was designed to meet the requirements outlined in O. Reg. 419/05, s 14. A multi-tiered receptor grid was developed with reference to Section 7.2 of the Air Dispersion Modelling Guideline for Ontario, Version 1.0, July 2005; therefore, interval spacing was dependent on the receptor distance from on-site sources. Please refer to Section in the report. On-site emissions are not routed through stacks; therefore, this section does not apply to this ESDM report. Please refer to Section in the report. Terrain information for the area surrounding the Site was obtained from the MOE Ontario Digital Elevation Model Data web site. The terrain data is based on the North American Datum 1983 (NAD83) horizontal reference datum. These data were run through the AERMAP terrain preprocessor to estimate base elevations for receptors of interest and to help the model account for changes in elevation of the surrounding terrain. Base elevations for sources are based on field observations and are assumed to be on the quarry floor. Section 17 Averaging Periods Please refer to Section in the report. A 24-hour averaging time was used for SPM. 1-hour and 24-hour averaging times were used for NOx. This is consistent with the Schedule 3 standards in O. Reg. 419/05. Revision Date: Prepared by: BGS

68 7.1 Emission Summary Table RWDI Project W D Phase Contaminant CAS Total Air Maximum Averaging MOE Limiting Regulation Percentage Name Number Facility Dispersion POI Period POI Effect Schedule of MOE Emission Model Concentration [2] Limit # POI Limit Rate [1] Used (g/s) (µg/m³) (hours) (µg/m3) (%) Phase 4 suspended particulate matter n/a 3.75 AERMOD visibility 3 98% Phase 5 East suspended particulate matter n/a 4.94 AERMOD visibility 3 89% nitrogen oxides AERMOD health 3 11% health 3 4% Phase 5 West suspended particulate matter n/a 4.94 AERMOD visibility 3 89% nitrogen oxides AERMOD health 3 11% health 3 4% Phase 6 East suspended particulate matter n/a 4.94 AERMOD visibility 3 94% nitrogen oxides AERMOD health 3 12% health 3 5% Phase 6 West suspended particulate matter n/a 4.94 AERMOD visibility 3 94% nitrogen oxides AERMOD health 3 12% health 3 5% Phase 7 suspended particulate matter n/a 4.94 AERMOD visibility 3 88% nitrogen oxides AERMOD health 3 18% health 3 7% Notes: [1] Emission rate provided reflects a wind speed of 5m/s. [2] Meteorological anomalies removed in accordance with Section 6.6 of the Air Dispersion Modelling Guideline for Ontario, July Revision Date: Prepared by: BGS

69

70 EXTRACTION PHASE 4 WORKING FACE EXTRACTION PHASE 5, 6 OR 7 WORKING FACE QUARRY TRUCK TO PERMANENT PLANT PROCESSING AT PERMANENT PLANT STOCKPILING AT PERMANENT PLANT SHIPPING FROM PERMANENT PLANT QUARRY TRUCK TO PERMANENT PLANT PROCESSING AT PERMANENT PLANT STOCKPILING AT PERMANENT PLANT SHIPPING FROM PERMANENT PLANT QUARRY TRUCK TO PORTABLE PLANT PROCESSING AT PORTABLE PLANT STOCKPILING AT PORTABLE PLANT SHIPPING FROM PORTABLE PLANT Process Flow Diagram - Overview of Major Operations Drawn by: BGS Figure: 1.4A Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

71 UPPER PLANT CR1-60 F1-60 C1-60 C % 100% 100% 100% 100% Crusher Feeder Conveyor Conveyor % G1-60 C5-60 C6-60 Series 60 Bin F2-60 C1-70 C2-70 S1-70 Quarry 20% 28% 100% 100% 100% 100% 100% 100% 56% Trucks Grizzly Conveyor Conveyor Bin Feeder Conveyor Conveyor Screen 100% 44% % G % 28% C5-70 CR1-70 C4-70 C3-70 Grizzly 100% 100% 100% Conveyor Crusher Conveyor Conveyor LOWER PLANT F1-61 C1-61 C2-61 S1-61 CR1-61 C4-61 S3-62 CR % 100% 100% 100% 50% 100% 90% 67% Feeder Conveyor Conveyor Screen Crusher Conveyor Screen Crusher 1% 10% 33% 100% Feed Rate F2-61 C1-62 C10-62 C11-62 From Surge 33% 100% 100% 100% Pile Feeder Conveyor Conveyor Conveyor 100% % F3-61 C3-61 S1-62 C2-62 C1-64 C % 100% 49% 40% 60% 100% 100% 100% Feeder Conveyor Screen Conveyor Conveyor Conveyor 60% 25% 165 Recycle rate for S1-70 Screen 295 Recycle rate for S4-63 Screens S2-62 CR2-62 F1-63 Material Handling Rate (Mg/hr) 42% 100% Value provided by Dufferin Screen Crusher Feeder Value dependent on Dufferin information 58% Calculated value 100% Emissions Included in Associated Process (converyor transfer into screen) 335 Balance Check S1-63 UPPER PLANT LOWER PLANT Screen Inputs: Inputs: 1900 Rock Trucks 1687 Feed from Surge Pile 1900 Total 0 Output: Outputs: C Surge Pile 625 CRUSHER RUN 0% 213 Crusher Run CLEAR STONE Conveyor 1900 Total 590 TO WASH PLANT 295 SCREENINGS 17 GABIAN 1674 Total Process Flow Diagram - Phase 4 Daytime Operations Permanent Plant Drawn by: BGS Figure: 1.4B Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

72 1687 PRIMARY SURGE C6-70 C7-70 C8-70 C9-70 C10-70 C11-70 C12-70 C13-70 C % 100% 100% 100% 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor CRUSHER RUN 3.0% MOISUTRE Series 62 Bin Bin CRUSHER RUN 3.0% MOISUTRE C3-64 C4-64 C5-64 C6-64 C8-64 C % 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor 25% 25% 100% 25% F2-63 F3-63 F4-63 C5-63 C6-63 Series 63 Bin F5-63 CR1-63 C % 100% 100% 100% 100% 100% Feeder Feeder Feeder Conveyor Conveyor Bin Feeder Crusher Conveyor 1.5 CLEAR STONE 100% 100% 100% 2.6% MOISUTRE S2-63 S3-63 S4-63 C7-63 C8-63 C % 100% 100% 100% Screen Screen Screen Conveyor Conveyor Conveyor TO WASH PLANT 22% (NEGLIGIBLE) C13-63 C11-63 C1A-65 C % 100% 100% 100% Conveyor Conveyor Conveyor Conveyor SCREENINGS 100% C10-63 Separator C14-63 C % 0% 100% 100% 100% Conveyor Screen Conveyor Conveyor GABIAN Process Flow Diagram - Phase 4 Daytime Operations Permanent Plant Drawn by: BGS Figure: 1.4B Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

73 UPPER PLANT CR1-60 F1-60 C1-60 C % 100% 100% 100% 100% Crusher Feeder Conveyor Conveyor % G1-60 C5-60 C6-60 Series 60 Bin F2-60 C1-70 C2-70 S1-70 Quarry 20% 28% 100% 100% 100% 100% 100% 100% 52% Trucks Grizzly Conveyor Conveyor Bin Feeder Conveyor Conveyor Screen 100% 48% % G % 28% C5-70 CR1-70 C4-70 C3-70 Grizzly 100% 100% 100% Conveyor Crusher Conveyor Conveyor LOWER PLANT F1-61 C1-61 C2-61 S1-61 CR1-61 C4-61 S3-62 CR % 100% 100% 100% 50% 100% 90% 67% Feeder Conveyor Conveyor Screen Crusher Conveyor Screen Crusher 1% 10% 33% 100% Feed Rate F2-61 C1-62 C10-62 C11-62 From Surge 33% 100% 100% 100% Pile Feeder Conveyor Conveyor Conveyor 100% % F3-61 C3-61 S1-62 C2-62 C1-64 C % 100% 49% 40% 60% 100% 100% 100% Feeder Conveyor Screen Conveyor Conveyor Conveyor 60% 25% 165 Recycle rate for S1-70 Screen 295 Recycle rate for S4-63 Screens S2-62 CR2-62 F1-63 Material Handling Rate (Mg/hr) 42% 100% Value provided by Dufferin Screen Crusher Feeder Value dependent on Dufferin information 58% Calculated value 100% Emissions Included in Associated Process (converyor transfer into screen) 294 Balance Check S1-63 UPPER PLANT LOWER PLANT Screen Inputs: Inputs: 1600 Rock Trucks 1421 Feed from Surge Pile 1600 Total 0 Output: Outputs: C Surge Pile 526 CRUSHER RUN 0% 179 Crusher Run CLEAR STONE Conveyor 1600 Total 517 TO WASH PLANT 259 SCREENINGS 14 GABIAN 1445 Total Process Flow Diagram - Phase 4 Evening Operations Permanent Plant Drawn by: BGS Figure: 1.4C Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

74 1421 PRIMARY SURGE C6-70 C7-70 C8-70 C9-70 C10-70 C11-70 C12-70 C13-70 C % 100% 100% 100% 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor CRUSHER RUN 3.0% MOISUTRE Series 62 Bin Bin CRUSHER RUN 3.0% MOISUTRE C3-64 C4-64 C5-64 C6-64 C8-64 C % 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor 25% 25% 100% 25% F2-63 F3-63 F4-63 C5-63 C6-63 Series 63 Bin F5-63 CR1-63 C % 100% 100% 100% 100% 100% Feeder Feeder Feeder Conveyor Conveyor Bin Feeder Crusher Conveyor 1.5 CLEAR STONE 100% 100% 100% 2.6% MOISUTRE S2-63 S3-63 S4-63 C7-63 C8-63 C % 100% 100% 100% Screen Screen Screen Conveyor Conveyor Conveyor TO WASH PLANT 22% (NEGLIGIBLE) C13-63 C11-63 C1A-65 C % 100% 100% 100% Conveyor Conveyor Conveyor Conveyor SCREENINGS 100% C10-63 Separator C14-63 C % 0% 100% 100% 100% Conveyor Screen Conveyor Conveyor GABIAN Process Flow Diagram - Phase 4 Evening Operations Permanent Plant Drawn by: BGS Figure: 1.4C Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2208

75 UPPER PLANT CR1-60 F1-60 C1-60 C % 100% 100% 100% 100% Crusher Feeder Conveyor Conveyor % G1-60 C5-60 C6-60 Series 60 Bin F2-60 C1-70 C2-70 S % 28% 100% 100% 100% 100% 100% 100% 56% Rock Trucks Grizzly Conveyor Conveyor Bin Feeder Conveyor Conveyor Screen 100% 44% % G % 28% C5-70 CR1-70 C4-70 C3-70 Grizzly 100% 100% 100% Conveyor Crusher Conveyor Conveyor LOWER PLANT F1-61 C1-61 C2-61 S1-61 CR1-61 C4-61 S3-62 CR % 100% 100% 100% 50% 100% 90% 67% Feeder Conveyor Conveyor Screen Crusher Conveyor Screen Crusher 1% 10% 33% 100% Feed Rate F2-61 C1-62 C10-62 C11-62 From Surge 33% 100% 100% 100% Pile Feeder Conveyor Conveyor Conveyor 100% % F3-61 C3-61 S1-62 C2-62 C1-64 C % 100% 49% 40% 60% 100% 100% 100% Feeder Conveyor Screen Conveyor Conveyor Conveyor 60% 25% 165 Recycle rate for S1-70 Screen 295 Recycle rate for S4-63 Screens S2-62 CR2-62 F1-63 Material Handling Rate (Mg/hr) 42% 100% Value provided by Dufferin Screen Crusher Feeder Value dependent on Dufferin information 58% Calculated value 100% Emissions Included in Associated Process (converyor transfer into screen) 335 Balance Check S1-63 UPPER PLANT LOWER PLANT Screen Inputs: Inputs: 1900 Rock Trucks 1687 Feed from Surge Pile 1900 Total 0 Output: Outputs: C Surge Pile 625 CRUSHER RUN 0% 213 Crusher Run CLEAR STONE Conveyor 1900 Total 590 TO WASH PLANT 295 SCREENINGS 17 GABIAN 1674 Total Process Flow Diagram - Phase 5, 6 & 7 Daytime Operations Permanent Plant Drawn by: BGS Figure: 1.4D Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

76 1687 PRIMARY SURGE C6-70 C7-70 C8-70 C9-70 C10-70 C11-70 C12-70 C13-70 C % 100% 100% 100% 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor CRUSHER RUN 3.0% MOISUTRE Series 62 Bin Bin CRUSHER RUN 3.0% MOISUTRE C3-64 C4-64 C5-64 C6-64 C8-64 C % 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor 25% 25% 100% 25% F2-63 F3-63 F4-63 C5-63 C6-63 Series 63 Bin F5-63 CR1-63 C % 100% 100% 100% 100% 100% Feeder Feeder Feeder Conveyor Conveyor Bin Feeder Crusher Conveyor 1.5 CLEAR STONE 100% 100% 100% 2.6% MOISUTRE S2-63 S3-63 S4-63 C7-63 C8-63 C % 100% 100% 100% Screen Screen Screen Conveyor Conveyor Conveyor TO WASH PLANT 22% (NEGLIGIBLE) C13-63 C11-63 C1A-65 C % 100% 100% 100% Conveyor Conveyor Conveyor Conveyor SCREENINGS 100% C10-63 Separator C14-63 C % 0% 100% 100% 100% Conveyor Screen Conveyor Conveyor GABIAN Process Flow Diagram - Phase 5, 6 & 7 Daytime Operations Permanent Plant Drawn by: BGS Figure: 1.4D Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2208

77 UPPER PLANT CR1-60 F1-60 C1-60 C % 100% 100% 100% 100% Crusher Feeder Conveyor Conveyor % G1-60 C5-60 C6-60 Series 60 Bin F2-60 C1-70 C2-70 S % 28% 100% 100% 100% 100% 100% 100% 52% Rock Trucks Grizzly Conveyor Conveyor Bin Feeder Conveyor Conveyor Screen 100% 48% % G % 28% C5-70 CR1-70 C4-70 C3-70 Grizzly 100% 100% 100% Conveyor Crusher Conveyor Conveyor LOWER PLANT F1-61 C1-61 C2-61 S1-61 CR1-61 C4-61 S3-62 CR % 100% 100% 100% 50% 100% 90% 67% Feeder Conveyor Conveyor Screen Crusher Conveyor Screen Crusher 1% 10% 33% 100% Feed Rate F2-61 C1-62 C10-62 C11-62 From Surge 33% 100% 100% 100% Pile Feeder Conveyor Conveyor Conveyor 100% % F3-61 C3-61 S1-62 C2-62 C1-64 C % 100% 49% 40% 60% 100% 100% 100% Feeder Conveyor Screen Conveyor Conveyor Conveyor 60% 25% 165 Recycle rate for S1-70 Screen 295 Recycle rate for S4-63 Screens S2-62 CR2-62 F1-63 Material Handling Rate (Mg/hr) 42% 100% Value provided by Dufferin Screen Crusher Feeder Value dependent on Dufferin information 58% Calculated value 100% Emissions Included in Associated Process (converyor transfer into screen) 294 Balance Check S1-63 UPPER PLANT LOWER PLANT Screen Inputs: Inputs: 1600 Rock Trucks 1421 Feed from Surge Pile 1600 Total 0 Output: Outputs: C Surge Pile 526 CRUSHER RUN 0% 179 Crusher Run CLEAR STONE Conveyor 1600 Total 517 TO WASH PLANT 259 SCREENINGS 14 GABIAN 1445 Total Process Flow Diagram - Phase 5, 6 & 7 Evening Operations Permanent Plant Drawn by: BGS Figure: 1.4E Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

78 1421 PRIMARY SURGE C6-70 C7-70 C8-70 C9-70 C10-70 C11-70 C12-70 C13-70 C % 100% 100% 100% 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor CRUSHER RUN 3.0% MOISUTRE Series 62 Bin Bin CRUSHER RUN 3.0% MOISUTRE C3-64 C4-64 C5-64 C6-64 C8-64 C % 100% 100% 100% 100% 100% Conveyor Conveyor Conveyor Conveyor Conveyor Conveyor 25% 25% 100% 25% F2-63 F3-63 F4-63 C5-63 C6-63 Series 63 Bin F5-63 CR1-63 C % 100% 100% 100% 100% 100% Feeder Feeder Feeder Conveyor Conveyor Bin Feeder Crusher Conveyor 1.5 CLEAR STONE 100% 100% 100% 2.6% MOISUTRE S2-63 S3-63 S4-63 C7-63 C8-63 C % 100% 100% 100% Screen Screen Screen Conveyor Conveyor Conveyor TO WASH PLANT 22% (NEGLIGIBLE) C13-63 C11-63 C1A-65 C % 100% 100% 100% Conveyor Conveyor Conveyor Conveyor SCREENINGS 100% C10-63 Separator C14-63 C % 0% 100% 100% 100% Conveyor Screen Conveyor Conveyor GABIAN Process Flow Diagram - Phase 5, 6 & 7 Evening Operations Permanent Plant Drawn by: BGS Figure: 1.4E Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2208

79 400 Rock Trucks F1 CR1 C1 S1 C2 100% 100% 100% 100% 25% 100% Feeder Crusher Conveyor Screen Conveyor 400 CRUSHER RUN 75% 3.0% MOISUTRE Rock Trucks C3 CR2 C4 S2 C6 S3 C7 100% 100% 100% 86% 100% 25% 100% 100 Recycle rate for S2 Screen Conveyor Crusher Conveyor Screen Conveyor Screen Conveyor CLEAR STONE Material Handling Rate (Mg/hr) 100% 14% 75% 3.0% MOISUTRE Value provided by Dufferin Value dependent on Dufferin information Calculated value CR3 C5 C8 100% 100% Balance Check Crusher Conveyor Conveyor Inputs TO WASH PLANT (NEGLIGIBLE) 400 Rock Trucks 400 Rock Trucks 800 Total Outputs 200 CRUSHER RUN 150 CLEAR STONE 450 TO WASH PLANT 800 Total Process Flow Diagram - Phase 5, 6 & 7 Daytime Operations Typical Portabkle Plant Configuration Drawn by: BGS Figure: 1.4F Approx. Scale: not to scale Acton Quarry Extension, Town of Halton Hills, Ontario Project #W D Date Revised: Aug 22, 2008

80

81

82 Figure 6.2

83

84 APPENDIX A (MODEL FILES TO COME ON CD)

85

86 APPENDIX B1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Project #W D Total facility emissions (excluding blasting, roadways, erosion from piles) 3.75 g/s Emissions by AERMOD Source Group (Modelled Sources Only) AERMOD Emission Source Area Source Rate Area Emission ID Rate (g/s) (m²) (g/m²/s) DRLL_P4 n/a n/a PTL_P n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a STKPL_LP E-06 STKPL_UP E-06 LOADOUT1 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT2 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT3 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT4 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT5 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT6 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s.

87 APPENDIX B1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) DRLL_P4 DRLL_P4 Drilling at working face 8.40E-05 E QTL_P4 PTL_P4 Quarry truck loading at working face 1.68E E 0.24% G1-60 VOL1 Grizzly E G2-60 VOL1 Grizzly E CR1-60 VOL1 Primary crusher 6.00E E 0.75% F1-60 VOL1 Feeder E C1-60 VOL1 Conveyor 7.00E E 0.88% C2-60 VOL5 Conveyor 7.00E E 0.88% Primary Surge VOL5 Primary Surge Pile / Bin 7.00E E 0.88% C5-60 VOL1 Conveyor 7.00E E 0.11% C6-60 VOL1 Conveyor 7.00E E 0.11% Bin VOL1 Series 60 Bin 7.00E E 0.11% F2-60 VOL1 Feeder 7.00E E 0.11% C1-70 VOL1 Conveyor 7.00E E 0.11% C2-70 VOL1 Conveyor E C5-70 VOL1 Conveyor E CR1-70 VOL1 Primary re-crusher 1.80E E 0.21% C4-70 VOL1 Conveyor E C3-70 VOL1 Conveyor E S1-70 VOL1 Simplicity screen 1.10E E 3.20% C6-70 STKPL_UP Conveyor E C7-70 STKPL_UP Conveyor 7.00E E 0.11% C8-70 STKPL_UP Conveyor 7.00E E 0.11% C9-70 STKPL_UP Conveyor 7.00E E 0.11% C10-70 STKPL_UP Conveyor 7.00E E 0.11% C11-70 STKPL_UP Conveyor 7.00E E 0.11% C12-70 STKPL_UP Conveyor 7.00E E 0.11% C13-70 STKPL_UP Conveyor 7.00E E 0.11% C14-70 STKPL_UP Stacker for Surge Pile 7.00E E 0.11% F1-61 VOL2 Feeder E F2-61 VOL2 Feeder E F3-61 VOL2 Feeder E C1-61 VOL2 Conveyor 7.00E E 0.88% C2-61 VOL2 Conveyor E S1-61 VOL2 Scalping screen 1.10E E 1.33% CR1-61 VOL2 Secondary crusher 2.70E E 1.68% C4-61 VOL2 Conveyor E S3-62 VOL3 Screen 1.10E E 0.53% CR1-62 VOL3 Tertiary crusher 2.70E E 1.01% C3-61 VOL3 Conveyor E C1-62 VOL3 Conveyor 7.00E E 0.04% S1-62 VOL3 Screen 1.10E E 0.35% S2-62 VOL3 Screen 1.10E E 0.40% C2-62 VOL3 Conveyor E CR2-62 VOL3 Tertiary crusher 2.70E E 1.07% C10-62 VOL4 Conveyor E C1-64 STKPL_UP Conveyor 7.00E E 0.32% C11-62 VOL4 Conveyor 7.00E E 0.69% C2-64 STKPL_UP Conveyor 7.00E E 0.32% Bin STKPL_UP Series 62 Bin E C3-64 STKPL_UP Conveyor 7.00E E 0.32% C4-64 STKPL_UP Conveyor 7.00E E 0.32% C5-64 STKPL_UP Conveyor 7.00E E 0.32% C6-64 STKPL_UP Conveyor 7.00E E 0.32% C8-64 STKPL_UP Conveyor 7.00E E 0.32% C14-64 STKPL_UP Conveyor 7.00E E 0.32% F1-63 VOL4 Feeder E F2-63 VOL4 Feeder E F3-63 VOL4 Feeder E F4-63 VOL4 Feeder E

88 APPENDIX B1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) C5-63 VOL6 Conveyor E C6-63 VOL6 Conveyor 7.00E E 0.15% Bin VOL6 Series 63 Bin E F5-63 VOL6 Feeder E CR1-63 VOL6 Quaternary crusher 1.95E E 4.27% C15-63 VOL4 Conveyor 7.00E E 0.15% S1-63 VOL4 Classifying screen 1.10E E 2.67% S2-63 VOL4 Classifying screen 1.10E E 2.67% S3-63 VOL4 Classifying screen 1.10E E 2.67% S4-63 VOL4 Classifying screen 1.10E E 2.67% C7-63 VOL4 Conveyor E C8-63 VOL4 Conveyor 7.00E E 0.08% C9-63 VOL4 Conveyor E C13-63 VOL4 Conveyor E C11-63 STKPL_LP Conveyor E C1A-65 STKPL_LP Conveyor 7.00E E 0.29% C10-63 STKPL_LP Conveyor E Screen STKPL_LP Series 63 Separator 1.10E E 2.40% C14-63 STKPL_LP Conveyor E C17-63 STKPL_LP Conveyor 7.00E E 0.15% TOTAL PROCESSING PLANT EMISSIONS % BULK MATERIAL HANDLING / TRANSFER EMISSIONS - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0000h-0500h 2.38E B 0.61% LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0700h-1900h 2.38E B 0.61% LOADOUT1 LOADOUT1 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0100h-0600h 2.38E B 0.67% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0600h-0700h 2.38E-03 B LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0700h-1900h 2.38E B 1.87% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 1900h-0100h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0100h-0600h 2.38E B 2.48% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0600h-0700h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0700h-1900h 2.38E B 6.14% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 1900h-0100h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0100h-0600h 2.38E B 3.74% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0600h-0700h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0700h-1900h 2.38E B 9.87% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 1900h-0100h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0100h-0600h 2.38E B 15.48% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0600h-0700h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0700h-1900h 2.38E B 42.70% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 1900h-0100h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0100h-0600h 2.38E B 0.61% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0600h-0700h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0700h-1900h 2.38E B 1.23% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 1900h-0100h 2.38E-03 B TOTAL TRANSFER EMISSIONS (DAYTIME ONLY) % Note: Transfer emissions are wind-speed-dependent. The sample emissions factor and rate provided reflect a wind speed of 5m/s.

89 APPENDIX B2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) DRLL_P4 Drilling at working face 15 Wet drilling: unfragmented stone j 1 Hole 4 1/2" diameter, 30m deep, assumed density of 2500kg/m³ QTL_P4 Quarry truck loading at working face 16 Truck unloading: fragmented stone j 1900 Loading quarry trucks at Phase 4 working face - hourly value based on permanent processing plant G1-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 G2-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 CR1-60 Primary crusher 6 Primary crushing (controlled) % no factor for primary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) F1-60 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-60 C1-60 Conveyor 14 Conveyor transfer point (controlled) 1687 C2-60 Conveyor 14 Conveyor transfer point (controlled) 1687 Primary Surge Primary Surge Pile / Bin 14 Conveyor transfer point (controlled) 1687 C5-60 Conveyor 14 Conveyor transfer point (controlled) 213 C6-60 Conveyor 14 Conveyor transfer point (controlled) 213 Bin Series 60 Bin 14 Conveyor transfer point (controlled) 213 bin assumed similar to conveyor transfer point F2-60 Feeder 14 Conveyor transfer point (controlled) 213 fugitive emissions from feeders assumed to be similar to conveyor drop points C1-70 Conveyor 14 Conveyor transfer point (controlled) 213 C2-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C5-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 CR1-70 Primary re-crusher 7 Secondary crushing (controlled) % no factor for secondary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) C4-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 C3-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-70 Simplicity screen 2 Screening (controlled) 378 C6-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C7-70 Conveyor 14 Conveyor transfer point (controlled) 213 C8-70 Conveyor 14 Conveyor transfer point (controlled) 213 C9-70 Conveyor 14 Conveyor transfer point (controlled) 213 C10-70 Conveyor 14 Conveyor transfer point (controlled) 213 C11-70 Conveyor 14 Conveyor transfer point (controlled) 213 C12-70 Conveyor 14 Conveyor transfer point (controlled) 213 C13-70 Conveyor 14 Conveyor transfer point (controlled) 213 C14-70 Stacker for Surge Pile 14 Conveyor transfer point (controlled) 213 F1-61 Feeder 14 Conveyor transfer point (controlled) % located underground F2-61 Feeder 14 Conveyor transfer point (controlled) % located underground F3-61 Feeder 14 Conveyor transfer point (controlled) % located underground C1-61 Conveyor 14 Conveyor transfer point (controlled) 1687 C2-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-61 Scalping screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-61 Secondary crusher 4 Secondary crushing % factor for tertiary crushing used, additional control assumed (full enclosure) C4-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-61 S3-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C3-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-61 C1-62 Conveyor 14 Conveyor transfer point (controlled) 84 S1-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) S2-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) C2-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-62 CR2-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C10-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR2-62 C1-64 Conveyor 14 Conveyor transfer point (controlled) 625 C11-62 Conveyor 14 Conveyor transfer point (controlled) 1341 C2-64 Conveyor 14 Conveyor transfer point (controlled) 625 Bin Series 62 Bin 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C3-64 Conveyor 14 Conveyor transfer point (controlled) 625 C4-64 Conveyor 14 Conveyor transfer point (controlled) 625 C5-64 Conveyor 14 Conveyor transfer point (controlled) 625 C6-64 Conveyor 14 Conveyor transfer point (controlled) 625 C8-64 Conveyor 14 Conveyor transfer point (controlled) 625 C14-64 Conveyor 14 Conveyor transfer point (controlled) 625 F1-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S1-63

90 APPENDIX B2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) F2-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S2-63 F3-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S3-63 F4-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S4-63 C5-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C6-63 Conveyor 14 Conveyor transfer point (controlled) 295 Bin Series 63 Bin 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 F5-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 CR1-63 Quaternary crusher 9 Fines crushing % additional control assumed (full enclosure) C15-63 Conveyor 14 Conveyor transfer point (controlled) 295 S1-63 Classifying screen 2 Screening (controlled) 335 S2-63 Classifying screen 2 Screening (controlled) 335 S3-63 Classifying screen 2 Screening (controlled) 335 S4-63 Classifying screen 2 Screening (controlled) 335 C7-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C8-63 Conveyor 14 Conveyor transfer point (controlled) 147 C16-63 Conveyor 14 Conveyor transfer point (controlled) 147 C9-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from S1-63 through S4-63 C13-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C11-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C1A-65 Conveyor 14 Conveyor transfer point (controlled) 590 C1-65 Conveyor 14 Conveyor transfer point (controlled) 590 C10-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from Series 63 Separator Screen Series 63 Separator 2 Screening (controlled) 295 C14-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from Series 63 Separator C17-63 Conveyor 14 Conveyor transfer point (controlled) 295 [1] ID corresponds to process flow diagram for facility and / or material [2] Select process code from Table or Table (see "T " tab) [3] Enter the control efficiency for each source - if no controls are applied, leave blank

91 APPENDIX B3: Bulk Material Handling Emissions Spreadsheet emissions: E = k (U / 2.2) 1.3 / (M / 2) 1.4 Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Daytime Operations Drop operation Input Required TRANSFER EMISSIONS - AP-42 Section E emission factor Calculated Value / Do Not Edit k particle size multiplier (0.74, 0.35 and for TSP, PM 10 and PM 2.5 ) Comment required Average recorded hourly wind speed (m/s): 5 [1] U mean wind speed, meters per second (m/s) (miles per hour [mph]) Table Heading (do not edit) M material moisture content (%) Not Ready for Use Process Information Controls Site Data [3] ID [2] Process Trucks Material Material Control Site Silt Moisture Source Comments Loaded Handled Handled Efficiency Specific Content Content Conditions (Hourly) (Hourly) (Daily) Applied [4] Data? Valid [5] (trucks/h) (Mg) (Mg) (%) (y/n) (%) (%) LOADOUT1 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT1 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT1 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT1 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT2 Lower Plant Truck Loading 0100h-0600h % partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 0600h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT2 Lower Plant Truck Loading 0700h-1900h % partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 1900h-0100h partial 1.6% 2.6% valid evening - no shipping LOADOUT3 Lower Plant Truck Loading 0100h-0600h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT3 Lower Plant Truck Loading 0600h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT3 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT3 Lower Plant Truck Loading 1900h-0100h partial 1.6% 2.6% valid evening - no shipping LOADOUT4 Lower Plant Truck Loading 0100h-0600h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT4 Lower Plant Truck Loading 0600h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT4 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT4 Lower Plant Truck Loading 1900h-0100h partial 1.6% 2.6% valid evening - no shipping LOADOUT5 Upper Plant Truck Loading 0100h-0600h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT5 Upper Plant Truck Loading 0600h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT5 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT5 Upper Plant Truck Loading 1900h-0100h partial 1.6% 2.6% valid evening - no shipping LOADOUT6 Upper Plant Truck Loading 0100h-0600h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT6 Upper Plant Truck Loading 0600h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT6 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT6 Upper Plant Truck Loading 1900h-0100h partial 1.6% 2.6% valid evening - no shipping [1] 5 m/s reflects wind speeds considered under the Regulation 346 MAXLGC dispersion model [2] ID corresponds to process flow diagram for facility and / or material [3] Silt value from AP-42 Table , moisture values from on-site measurements taken by Dufferin [4] Enter the control efficiency for each source - if no controls are applied, leave blank [5] Relates to AP-42 Section

92

93 APPENDIX C1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Project #W D Total facility emissions (excluding blasting, roadways, erosion from piles) 3.59 g/s Emissions by AERMOD Source Group (Modelled Sources Only) AERMOD Emission Source Area Source Rate Area Emission ID Rate (g/s) (m²) (g/m²/s) DRLL_P4 n/a n/a QTL_P n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a STKPL_LP E-06 STKPL_UP E-07 LOADOUT1 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT2 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT3 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT4 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT5 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT6 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s.

94 APPENDIX C1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) DRLL_P4 DRLL_P4 Drilling at working face 8.40E-05 E QTL_P4 QTL_P4 Quarry truck loading at working face 1.68E E 0.21% G1-60 VOL1 Grizzly E G2-60 VOL1 Grizzly E CR1-60 VOL1 Primary crusher 6.00E E 0.67% F1-60 VOL1 Feeder E C1-60 VOL1 Conveyor 7.00E E 0.78% C2-60 VOL5 Conveyor 7.00E E 0.78% Primary Surge VOL5 Primary Surge Pile / Bin 7.00E E 0.78% C5-60 VOL1 Conveyor 7.00E E 0.10% C6-60 VOL1 Conveyor 7.00E E 0.10% Bin VOL1 Series 60 Bin 7.00E E 0.10% F2-60 VOL1 Feeder 7.00E E 0.10% C1-70 VOL1 Conveyor 7.00E E 0.10% C2-70 VOL1 Conveyor E C5-70 VOL1 Conveyor E CR1-70 VOL1 Primary re-crusher 1.80E E 0.22% C4-70 VOL1 Conveyor E C3-70 VOL1 Conveyor E S1-70 VOL1 Simplicity screen 1.10E E 3.06% C6-70 STKPL_UP Conveyor E C7-70 STKPL_UP Conveyor 7.00E E 0.10% C8-70 STKPL_UP Conveyor 7.00E E 0.10% C9-70 STKPL_UP Conveyor 7.00E E 0.10% C10-70 STKPL_UP Conveyor 7.00E E 0.10% C11-70 STKPL_UP Conveyor 7.00E E 0.10% C12-70 STKPL_UP Conveyor 7.00E E 0.10% C13-70 STKPL_UP Conveyor 7.00E E 0.10% C14-70 STKPL_UP Stacker for Surge Pile 7.00E E 0.10% F1-61 VOL2 Feeder E F2-61 VOL2 Feeder E F3-61 VOL2 Feeder E C1-61 VOL2 Conveyor 7.00E E 0.78% C2-61 VOL2 Conveyor E S1-61 VOL2 Scalping screen 1.10E E 1.11% CR1-61 VOL2 Secondary crusher 2.70E E 1.47% C4-61 VOL2 Conveyor E S3-62 VOL3 Screen 1.10E E 0.56% CR1-62 VOL3 Tertiary crusher 2.70E E 0.89% C3-61 VOL3 Conveyor E C1-62 VOL3 Conveyor 7.00E E 0.04% S1-62 VOL3 Screen 1.10E E 0.31% S2-62 VOL3 Screen 1.10E E 0.36% C2-62 VOL3 Conveyor E CR2-62 VOL3 Tertiary crusher 2.70E E 0.95% C10-62 VOL4 Conveyor E C1-64 STKPL_UP Conveyor 7.00E E 0.28% C11-62 VOL4 Conveyor 7.00E E 0.64% C2-64 STKPL_UP Conveyor 7.00E E 0.28% Bin STKPL_UP Series 62 Bin E C3-64 STKPL_UP Conveyor 7.00E E 0.28% C4-64 STKPL_UP Conveyor 7.00E E 0.28% C5-64 STKPL_UP Conveyor 7.00E E 0.28% C6-64 STKPL_UP Conveyor 7.00E E 0.28% C8-64 STKPL_UP Conveyor 7.00E E 0.28% C14-64 STKPL_UP Conveyor 7.00E E 0.28% F1-63 VOL4 Feeder E F2-63 VOL4 Feeder E F3-63 VOL4 Feeder E F4-63 VOL4 Feeder E

95 APPENDIX C1: Summary of Fugitive Emissions Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) C5-63 VOL6 Conveyor E C6-63 VOL6 Conveyor 7.00E E 0.16% Bin VOL6 Series 63 Bin E F5-63 VOL6 Feeder E CR1-63 VOL6 Quaternary crusher 1.95E E 4.45% C15-63 VOL4 Conveyor 7.00E E 0.16% S1-63 VOL4 Classifying screen 1.10E E 2.50% S2-63 VOL4 Classifying screen 1.10E E 2.50% S3-63 VOL4 Classifying screen 1.10E E 2.50% S4-63 VOL4 Classifying screen 1.10E E 2.50% C7-63 VOL4 Conveyor E C8-63 VOL4 Conveyor 7.00E E 0.07% C9-63 VOL4 Conveyor E C13-63 VOL4 Conveyor E C11-63 STKPL_LP Conveyor E C1A-65 STKPL_LP Conveyor 7.00E E 0.28% C10-63 STKPL_LP Conveyor E Screen STKPL_LP Series 63 Separator 1.10E E 2.20% C14-63 STKPL_LP Conveyor E C17-63 STKPL_LP Conveyor 7.00E E 0.14% TOTAL PROCESSING PLANT EMISSIONS % BULK MATERIAL HANDLING / TRANSFER EMISSIONS - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0000h-0500h 2.38E B 0.64% LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0700h-1900h 2.38E B 0.64% LOADOUT1 LOADOUT1 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0000h-0500h 2.38E B 0.70% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0700h-1900h 2.38E B 1.95% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0000h-0500h 2.38E B 2.59% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0700h-1900h 2.38E B 6.40% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0000h-0500h 2.38E B 3.90% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0700h-1900h 2.38E B 10.30% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0000h-0500h 2.38E B 16.14% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0700h-1900h 2.38E B 44.52% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0000h-0500h 2.38E B 0.64% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0700h-1900h 2.38E B 1.28% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 1900h-0000h 2.38E-03 B TOTAL TRANSFER EMISSIONS (DAYTIME ONLY) % Note: Transfer emissions are wind-speed-dependent. The sample emissions factor and rate provided reflect a wind speed of 5m/s.

96 APPENDIX C2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) DRLL_P4 Drilling at working face 15 Wet drilling: unfragmented stone j 1 Hole 4 1/2" diameter, 30m deep, assumed density of 2500kg/m³ QTL_P4 Quarry truck loading at working face 16 Truck unloading: fragmented stone j 1600 Loading quarry trucks at Phase 4 working face - hourly value based on permanent processing plant G1-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 G2-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 CR1-60 Primary crusher 6 Primary crushing (controlled) % no factor for primary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) F1-60 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-60 C1-60 Conveyor 14 Conveyor transfer point (controlled) 1421 C2-60 Conveyor 14 Conveyor transfer point (controlled) 1421 Primary Surge Primary Surge Pile / Bin 14 Conveyor transfer point (controlled) 1421 C5-60 Conveyor 14 Conveyor transfer point (controlled) 179 C6-60 Conveyor 14 Conveyor transfer point (controlled) 179 Bin Series 60 Bin 14 Conveyor transfer point (controlled) 179 bin assumed similar to conveyor transfer point F2-60 Feeder 14 Conveyor transfer point (controlled) 179 fugitive emissions from feeders assumed to be similar to conveyor drop points C1-70 Conveyor 14 Conveyor transfer point (controlled) 179 C2-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C5-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 CR1-70 Primary re-crusher 7 Secondary crushing (controlled) % no factor for secondary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) C4-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 C3-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-70 Simplicity screen 2 Screening (controlled) 344 C6-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C7-70 Conveyor 14 Conveyor transfer point (controlled) 179 C8-70 Conveyor 14 Conveyor transfer point (controlled) 179 C9-70 Conveyor 14 Conveyor transfer point (controlled) 179 C10-70 Conveyor 14 Conveyor transfer point (controlled) 179 C11-70 Conveyor 14 Conveyor transfer point (controlled) 179 C12-70 Conveyor 14 Conveyor transfer point (controlled) 179 C13-70 Conveyor 14 Conveyor transfer point (controlled) 179 C14-70 Stacker for Surge Pile 14 Conveyor transfer point (controlled) 179 F1-61 Feeder 14 Conveyor transfer point (controlled) % located underground F2-61 Feeder 14 Conveyor transfer point (controlled) % located underground F3-61 Feeder 14 Conveyor transfer point (controlled) % located underground C1-61 Conveyor 14 Conveyor transfer point (controlled) 1421 C2-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-61 Scalping screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-61 Secondary crusher 4 Secondary crushing % factor for tertiary crushing used, additional control assumed (full enclosure) C4-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-61 S3-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C3-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-61 C1-62 Conveyor 14 Conveyor transfer point (controlled) 71 S1-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) S2-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) C2-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-62 CR2-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C10-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR2-62 C1-64 Conveyor 14 Conveyor transfer point (controlled) 526 C11-62 Conveyor 14 Conveyor transfer point (controlled) 1176 C2-64 Conveyor 14 Conveyor transfer point (controlled) 526 Bin Series 62 Bin 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C3-64 Conveyor 14 Conveyor transfer point (controlled) 526 C4-64 Conveyor 14 Conveyor transfer point (controlled) 526 C5-64 Conveyor 14 Conveyor transfer point (controlled) 526 C6-64 Conveyor 14 Conveyor transfer point (controlled) 526 C8-64 Conveyor 14 Conveyor transfer point (controlled) 526 C14-64 Conveyor 14 Conveyor transfer point (controlled) 526 F1-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S1-63

97 APPENDIX C2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) F2-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S2-63 F3-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S3-63 F4-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S4-63 C5-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C6-63 Conveyor 14 Conveyor transfer point (controlled) 295 Bin Series 63 Bin 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 F5-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 CR1-63 Quaternary crusher 9 Fines crushing % additional control assumed (full enclosure) C15-63 Conveyor 14 Conveyor transfer point (controlled) 295 S1-63 Classifying screen 2 Screening (controlled) 294 S2-63 Classifying screen 2 Screening (controlled) 294 S3-63 Classifying screen 2 Screening (controlled) 294 S4-63 Classifying screen 2 Screening (controlled) 294 C7-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C8-63 Conveyor 14 Conveyor transfer point (controlled) 129 C16-63 Conveyor 14 Conveyor transfer point (controlled) 129 C9-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from S1-63 through S4-63 C13-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C11-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C1A-65 Conveyor 14 Conveyor transfer point (controlled) 517 C1-65 Conveyor 14 Conveyor transfer point (controlled) 517 C10-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from Series 63 Separator Screen Series 63 Separator 2 Screening (controlled) 259 C14-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from Series 63 Separator C17-63 Conveyor 14 Conveyor transfer point (controlled) 259 [1] ID corresponds to process flow diagram for facility and / or material [2] Select process code from Table or Table (see "T " tab) [3] Enter the control efficiency for each source - if no controls are applied, leave blank

98 APPENDIX C3: Bulk Material Handling Emissions Spreadsheet emissions: E = k (U / 2.2) 1.3 / (M / 2) 1.4 Project #W D Acton Quarry Extension - Phase 4 Permanent Plant Evening Operations Drop operation Input Required TRANSFER EMISSIONS - AP-42 Section E emission factor Calculated Value / Do Not Edit k particle size multiplier (0.74, 0.35 and for TSP, PM 10 and PM 2.5 ) Comment required Average recorded hourly wind speed (m/s): 5 [1] U mean wind speed, meters per second (m/s) (miles per hour [mph]) Table Heading (do not edit) M material moisture content (%) Not Ready for Use Process Information Controls Site Data [3] ID [2] Process Trucks Material Material Control Site Silt Moisture Source Comments Loaded Handled Handled Efficiency Specific Content Content Conditions (Hourly) (Hourly) (Daily) Applied [4] Data? Valid [5] (trucks/h) (Mg) (Mg) (%) (y/n) (%) (%) LOADOUT1 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT1 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT1 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT1 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT2 Lower Plant Truck Loading 0000h-0500h % partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT2 Lower Plant Truck Loading 0700h-1900h % partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT3 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT3 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT3 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT3 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT4 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT4 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT4 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT4 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT5 Upper Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT5 Upper Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT5 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT5 Upper Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT6 Upper Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT6 Upper Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT6 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT6 Upper Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping [1] 5 m/s reflects wind speeds considered under the Regulation 346 MAXLGC dispersion model [2] ID corresponds to process flow diagram for facility and / or material [3] Silt value from AP-42 Table , moisture values from on-site measurements taken by Dufferin [4] Enter the control efficiency for each source - if no controls are applied, leave blank [5] Relates to AP-42 Section

99

100 APPENDIX D1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Project #W D Total facility emissions (excluding blasting, roadways, erosion from piles) 1.40 g/s Emissions by AERMOD Source Group (Modelled Sources Only) AERMOD Emission Source Area Source Rate Area Emission ID Rate (g/s) (m²) (g/m²/s) VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a STKPL_LP E-06 STKPL_UP E-06 LOADOUT1 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT2 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT3 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT4 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT5 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT6 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s.

101 APPENDIX D1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) G1-60 VOL1 Grizzly E G2-60 VOL1 Grizzly E CR1-60 VOL1 Primary crusher 6.00E E 2.00% F1-60 VOL1 Feeder E C1-60 VOL1 Conveyor 7.00E E 2.36% C2-60 VOL5 Conveyor 7.00E E 2.36% Primary Surge VOL5 Primary Surge Pile / Bin 7.00E E 2.36% C5-60 VOL1 Conveyor 7.00E E 0.29% C6-60 VOL1 Conveyor 7.00E E 0.29% Bin VOL1 Series 60 Bin 7.00E E 0.29% F2-60 VOL1 Feeder 7.00E E 0.29% C1-70 VOL1 Conveyor 7.00E E 0.29% C2-70 VOL1 Conveyor E C5-70 VOL1 Conveyor E CR1-70 VOL1 Primary re-crusher 1.80E E 0.57% C4-70 VOL1 Conveyor E C3-70 VOL1 Conveyor E S1-70 VOL1 Simplicity screen 1.10E E 8.58% C6-70 STKPL_UP Conveyor E C7-70 STKPL_UP Conveyor 7.00E E 0.29% C8-70 STKPL_UP Conveyor 7.00E E 0.29% C9-70 STKPL_UP Conveyor 7.00E E 0.29% C10-70 STKPL_UP Conveyor 7.00E E 0.29% C11-70 STKPL_UP Conveyor 7.00E E 0.29% C12-70 STKPL_UP Conveyor 7.00E E 0.29% C13-70 STKPL_UP Conveyor 7.00E E 0.29% C14-70 STKPL_UP Stacker for Surge Pile 7.00E E 0.29% F1-61 VOL2 Feeder E F2-61 VOL2 Feeder E F3-61 VOL2 Feeder E C1-61 VOL2 Conveyor 7.00E E 2.36% C2-61 VOL2 Conveyor E S1-61 VOL2 Scalping screen 1.10E E 3.57% CR1-61 VOL2 Secondary crusher 2.70E E 4.50% C4-61 VOL2 Conveyor E S3-62 VOL3 Screen 1.10E E 1.43% CR1-62 VOL3 Tertiary crusher 2.70E E 2.72% C3-61 VOL3 Conveyor E C1-62 VOL3 Conveyor 7.00E E 0.11% S1-62 VOL3 Screen 1.10E E 0.93% S2-62 VOL3 Screen 1.10E E 1.07% C2-62 VOL3 Conveyor E CR2-62 VOL3 Tertiary crusher 2.70E E 2.86% C10-62 VOL4 Conveyor E C1-64 STKPL_UP Conveyor 7.00E E 0.86% C11-62 VOL4 Conveyor 7.00E E 1.86% C2-64 STKPL_UP Conveyor 7.00E E 0.86% Bin STKPL_UP Series 62 Bin E C3-64 STKPL_UP Conveyor 7.00E E 0.86% C4-64 STKPL_UP Conveyor 7.00E E 0.86% C5-64 STKPL_UP Conveyor 7.00E E 0.86% C6-64 STKPL_UP Conveyor 7.00E E 0.86% C8-64 STKPL_UP Conveyor 7.00E E 0.86% C14-64 STKPL_UP Conveyor 7.00E E 0.86% F1-63 VOL4 Feeder E F2-63 VOL4 Feeder E F3-63 VOL4 Feeder E F4-63 VOL4 Feeder E C5-63 VOL6 Conveyor E C6-63 VOL6 Conveyor 7.00E E 0.41%

102 APPENDIX D1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) Bin VOL6 Series 63 Bin E F5-63 VOL6 Feeder E CR1-63 VOL6 Quaternary crusher 1.95E E 11.43% C15-63 VOL4 Conveyor 7.00E E 0.41% S1-63 VOL4 Classifying screen 1.10E E 7.15% S2-63 VOL4 Classifying screen 1.10E E 7.15% S3-63 VOL4 Classifying screen 1.10E E 7.15% S4-63 VOL4 Classifying screen 1.10E E 7.15% C7-63 VOL4 Conveyor E C8-63 VOL4 Conveyor 7.00E E 0.21% C9-63 VOL4 Conveyor E C13-63 VOL4 Conveyor E C11-63 STKPL_LP Conveyor E C1A-65 STKPL_LP Conveyor 7.00E E 0.79% C10-63 STKPL_LP Conveyor E Screen STKPL_LP Series 63 Separator 1.10E E 6.43% C14-63 STKPL_LP Conveyor E C17-63 STKPL_LP Conveyor 7.00E E 0.41% TOTAL PROCESSING PLANT EMISSIONS % BULK MATERIAL HANDLING / TRANSFER EMISSIONS - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0000h-0500h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0500h-0700h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0700h-1900h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 1900h-0000h LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0000h-0500h 2.38E B 1.36% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0700h-1900h 2.38E B 3.64% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0000h-0500h 2.38E B 5.00% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0700h-1900h 2.38E B 13.58% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0000h-0500h 2.38E B 8.58% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0700h-1900h 2.38E B 20.01% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0000h-0500h 2.38E B 31.44% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0700h-1900h 2.38E B 85.76% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 1900h-0000h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0000h-0500h 2.38E B 1.64% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0500h-0700h 2.38E-03 B LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0700h-1900h 2.38E B 3.29% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 1900h-0000h 2.38E-03 B TOTAL TRANSFER EMISSIONS (DAYTIME ONLY) Note: Transfer emissions are wind-speed-dependent. The sample emissions factor and rate provided reflect a wind speed of 5m/s.

103 APPENDIX D2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) G1-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 G2-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 CR1-60 Primary crusher 6 Primary crushing (controlled) % no factor for primary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) F1-60 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-60 C1-60 Conveyor 14 Conveyor transfer point (controlled) 1687 C2-60 Conveyor 14 Conveyor transfer point (controlled) 1687 Primary Surge Primary Surge Pile / Bin 14 Conveyor transfer point (controlled) 1687 C5-60 Conveyor 14 Conveyor transfer point (controlled) 213 C6-60 Conveyor 14 Conveyor transfer point (controlled) 213 Bin Series 60 Bin 14 Conveyor transfer point (controlled) 213 bin assumed similar to conveyor transfer point F2-60 Feeder 14 Conveyor transfer point (controlled) 213 fugitive emissions from feeders assumed to be similar to conveyor drop points C1-70 Conveyor 14 Conveyor transfer point (controlled) 213 C2-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C5-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 CR1-70 Primary re-crusher 7 Secondary crushing (controlled) % no factor for secondary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) C4-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 C3-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-70 Simplicity screen 2 Screening (controlled) 378 C6-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C7-70 Conveyor 14 Conveyor transfer point (controlled) 213 C8-70 Conveyor 14 Conveyor transfer point (controlled) 213 C9-70 Conveyor 14 Conveyor transfer point (controlled) 213 C10-70 Conveyor 14 Conveyor transfer point (controlled) 213 C11-70 Conveyor 14 Conveyor transfer point (controlled) 213 C12-70 Conveyor 14 Conveyor transfer point (controlled) 213 C13-70 Conveyor 14 Conveyor transfer point (controlled) 213 C14-70 Stacker for Surge Pile 14 Conveyor transfer point (controlled) 213 F1-61 Feeder 14 Conveyor transfer point (controlled) % located underground F2-61 Feeder 14 Conveyor transfer point (controlled) % located underground F3-61 Feeder 14 Conveyor transfer point (controlled) % located underground C1-61 Conveyor 14 Conveyor transfer point (controlled) 1687 C2-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-61 Scalping screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-61 Secondary crusher 4 Secondary crushing % factor for tertiary crushing used, additional control assumed (full enclosure) C4-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-61 S3-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C3-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-61 C1-62 Conveyor 14 Conveyor transfer point (controlled) 84 S1-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) S2-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) C2-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-62 CR2-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C10-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR2-62 C1-64 Conveyor 14 Conveyor transfer point (controlled) 625 C11-62 Conveyor 14 Conveyor transfer point (controlled) 1341 C2-64 Conveyor 14 Conveyor transfer point (controlled) 625 Bin Series 62 Bin 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C3-64 Conveyor 14 Conveyor transfer point (controlled) 625 C4-64 Conveyor 14 Conveyor transfer point (controlled) 625 C5-64 Conveyor 14 Conveyor transfer point (controlled) 625 C6-64 Conveyor 14 Conveyor transfer point (controlled) 625 C8-64 Conveyor 14 Conveyor transfer point (controlled) 625 C14-64 Conveyor 14 Conveyor transfer point (controlled) 625 F1-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 F2-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S2-63 F3-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S3-63

104 APPENDIX D2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) F4-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S4-63 C5-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C6-63 Conveyor 14 Conveyor transfer point (controlled) 295 Bin Series 63 Bin 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 F5-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 CR1-63 Quaternary crusher 9 Fines crushing % additional control assumed (full enclosure) C15-63 Conveyor 14 Conveyor transfer point (controlled) 295 S1-63 Classifying screen 2 Screening (controlled) 335 S2-63 Classifying screen 2 Screening (controlled) 335 S3-63 Classifying screen 2 Screening (controlled) 335 S4-63 Classifying screen 2 Screening (controlled) 335 C7-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C8-63 Conveyor 14 Conveyor transfer point (controlled) 147 C16-63 Conveyor 14 Conveyor transfer point (controlled) 147 C9-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from S1-63 through S4-63 C13-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C11-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C1A-65 Conveyor 14 Conveyor transfer point (controlled) 590 C1-65 Conveyor 14 Conveyor transfer point (controlled) 590 C10-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from Series 63 Separator Screen Series 63 Separator 2 Screening (controlled) 295 C14-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from Series 63 Separator C17-63 Conveyor 14 Conveyor transfer point (controlled) 295 [1] ID corresponds to process flow diagram for facility and / or material [2] Select process code from Table or Table (see "T " tab) [3] Enter the control efficiency for each source - if no controls are applied, leave blank

105 APPENDIX D3: Bulk Material Handling Emissions Spreadsheet emissions: E = k (U / 2.2) 1.3 / (M / 2) 1.4 Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Daytime Operations Drop operation Input Required TRANSFER EMISSIONS - AP-42 Section E emission factor Calculated Value / Do Not Edit k particle size multiplier (0.74, 0.35 and for TSP, PM 10 and PM 2.5 ) Comment required Average recorded hourly wind speed (m/s): 5 [1] U mean wind speed, meters per second (m/s) (miles per hour [mph]) Table Heading (do not edit) M material moisture content (%) Not Ready for Use Process Information Controls Site Data [3] ID [2] Process Trucks Material Material Control Site Silt Moisture Source Comments Loaded Handled Handled Efficiency Specific Content Content Conditions (Hourly) (Hourly) (Daily) Applied [4] Data? Valid [5] (trucks/h) (Mg) (Mg) (%) (y/n) (%) (%) LOADOUT1 Lower Plant Truck Loading 0000h-0500h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 0500h-0700h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 0700h-1900h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 1900h-0000h no shipping from this location in future case LOADOUT2 Lower Plant Truck Loading 0000h-0500h % partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT2 Lower Plant Truck Loading 0700h-1900h % partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT3 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT3 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT3 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT3 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT4 Lower Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT4 Lower Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT4 Lower Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT4 Lower Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT5 Upper Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT5 Upper Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT5 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT5 Upper Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping LOADOUT6 Upper Plant Truck Loading 0000h-0500h partial 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT6 Upper Plant Truck Loading 0500h-0700h partial 1.6% 2.6% valid morning - no shipping LOADOUT6 Upper Plant Truck Loading 0700h-1900h partial 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT6 Upper Plant Truck Loading 1900h-0000h partial 1.6% 2.6% valid evening - no shipping [1] 5 m/s reflects wind speeds considered under the Regulation 346 MAXLGC dispersion model [2] ID corresponds to process flow diagram for facility and / or material [3] Silt value from AP-42 Table , moisture values from on-site measurements taken by Dufferin [4] Enter the control efficiency for each source - if no controls are applied, leave blank [5] Relates to AP-42 Section

106

107 APPENDIX E1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Project #W D Total facility emissions (excluding blasting, roadways, erosion from piles) 1.25 g/s Emissions by AERMOD Source Group (Modelled Sources Only) AERMOD Emission Source Area Source Rate Area Emission ID Rate (g/s) (m²) (g/m²/s) VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a VOL n/a n/a STKPL_LP E-06 STKPL_UP E-07 LOADOUT1 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT2 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT3 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT4 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT5 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s. LOADOUT6 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s.

108 APPENDIX E1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) G1-60 VOL1 Grizzly E G2-60 VOL1 Grizzly E CR1-60 VOL1 Primary crusher 6.00E E 1.92% F1-60 VOL1 Feeder E C1-60 VOL1 Conveyor 7.00E E 2.24% C2-60 VOL5 Conveyor 7.00E E 2.24% Primary Surge VOL5 Primary Surge Pile / Bin 7.00E E 2.24% C5-60 VOL1 Conveyor 7.00E E 0.28% C6-60 VOL1 Conveyor 7.00E E 0.28% Bin VOL1 Series 60 Bin 7.00E E 0.28% F2-60 VOL1 Feeder 7.00E E 0.28% C1-70 VOL1 Conveyor 7.00E E 0.28% C2-70 VOL1 Conveyor E C5-70 VOL1 Conveyor E CR1-70 VOL1 Primary re-crusher 1.80E E 0.64% C4-70 VOL1 Conveyor E C3-70 VOL1 Conveyor E S1-70 VOL1 Simplicity screen 1.10E E 8.82% C6-70 STKPL_UP Conveyor E C7-70 STKPL_UP Conveyor 7.00E E 0.28% C8-70 STKPL_UP Conveyor 7.00E E 0.28% C9-70 STKPL_UP Conveyor 7.00E E 0.28% C10-70 STKPL_UP Conveyor 7.00E E 0.28% C11-70 STKPL_UP Conveyor 7.00E E 0.28% C12-70 STKPL_UP Conveyor 7.00E E 0.28% C13-70 STKPL_UP Conveyor 7.00E E 0.28% C14-70 STKPL_UP Stacker for Surge Pile 7.00E E 0.28% F1-61 VOL2 Feeder E F2-61 VOL2 Feeder E F3-61 VOL2 Feeder E C1-61 VOL2 Conveyor 7.00E E 2.24% C2-61 VOL2 Conveyor E S1-61 VOL2 Scalping screen 1.10E E 3.21% CR1-61 VOL2 Secondary crusher 2.70E E 4.25% C4-61 VOL2 Conveyor E S3-62 VOL3 Screen 1.10E E 1.60% CR1-62 VOL3 Tertiary crusher 2.70E E 2.57% C3-61 VOL3 Conveyor E C1-62 VOL3 Conveyor 7.00E E 0.11% S1-62 VOL3 Screen 1.10E E 0.88% S2-62 VOL3 Screen 1.10E E 1.04% C2-62 VOL3 Conveyor E CR2-62 VOL3 Tertiary crusher 2.70E E 2.73% C10-62 VOL4 Conveyor E C1-64 STKPL_UP Conveyor 7.00E E 0.80% C11-62 VOL4 Conveyor 7.00E E 1.84% C2-64 STKPL_UP Conveyor 7.00E E 0.80% Bin STKPL_UP Series 62 Bin E C3-64 STKPL_UP Conveyor 7.00E E 0.80% C4-64 STKPL_UP Conveyor 7.00E E 0.80% C5-64 STKPL_UP Conveyor 7.00E E 0.80% C6-64 STKPL_UP Conveyor 7.00E E 0.80% C8-64 STKPL_UP Conveyor 7.00E E 0.80% C14-64 STKPL_UP Conveyor 7.00E E 0.80% F1-63 VOL4 Feeder E F2-63 VOL4 Feeder E F3-63 VOL4 Feeder E F4-63 VOL4 Feeder E C5-63 VOL6 Conveyor E C6-63 VOL6 Conveyor 7.00E E 0.46%

109 APPENDIX E1: Summary of Fugitive Emissions Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) Bin VOL6 Series 63 Bin E F5-63 VOL6 Feeder E CR1-63 VOL6 Quaternary crusher 1.95E E 12.83% C15-63 VOL4 Conveyor 7.00E E 0.46% S1-63 VOL4 Classifying screen 1.10E E 7.22% S2-63 VOL4 Classifying screen 1.10E E 7.22% S3-63 VOL4 Classifying screen 1.10E E 7.22% S4-63 VOL4 Classifying screen 1.10E E 7.22% C7-63 VOL4 Conveyor E C8-63 VOL4 Conveyor 7.00E E 0.20% C9-63 VOL4 Conveyor E C13-63 VOL4 Conveyor E C11-63 STKPL_LP Conveyor E C1A-65 STKPL_LP Conveyor 7.00E E 0.80% C10-63 STKPL_LP Conveyor E Screen STKPL_LP Series 63 Separator 1.10E E 6.33% C14-63 STKPL_LP Conveyor E C17-63 STKPL_LP Conveyor 7.00E E 0.40% TOTAL PROCESSING PLANT EMISSIONS % BULK MATERIAL HANDLING / TRANSFER EMISSIONS - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0000h-0500h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0500h-0700h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 0700h-1900h LOADOUT1 LOADOUT1 Lower Plant Truck Loading 1900h-0000h LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0000h-0500h 2.38E A 1.52% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT2 LOADOUT2 Lower Plant Truck Loading 0700h-1900h 2.38E A 4.09% LOADOUT2 LOADOUT2 Lower Plant Truck Loading 1900h-0000h 2.38E-03 A LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0000h-0500h 2.38E A 5.61% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT3 LOADOUT3 Lower Plant Truck Loading 0700h-1900h 2.38E A 15.23% LOADOUT3 LOADOUT3 Lower Plant Truck Loading 1900h-0000h 2.38E-03 A LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0000h-0500h 2.38E A 9.62% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT4 LOADOUT4 Lower Plant Truck Loading 0700h-1900h 2.38E A 22.45% LOADOUT4 LOADOUT4 Lower Plant Truck Loading 1900h-0000h 2.38E-03 A LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0000h-0500h 2.38E A 35.27% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT5 LOADOUT5 Upper Plant Truck Loading 0700h-1900h 2.38E A 96.20% LOADOUT5 LOADOUT5 Upper Plant Truck Loading 1900h-0000h 2.38E-03 A LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0000h-0500h 2.38E A 1.84% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT6 LOADOUT6 Upper Plant Truck Loading 0700h-1900h 2.38E A 3.69% LOADOUT6 LOADOUT6 Upper Plant Truck Loading 1900h-0000h 2.38E-03 A TOTAL TRANSFER EMISSIONS (DAYTIME ONLY) Note: Transfer emissions are wind-speed-dependent. The sample emissions factor and rate provided reflect a wind speed of 5m/s.

110 APPENDIX E2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) G1-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 G2-60 Grizzly 16 Truck unloading: fragmented stone j % Included in emissions from CR1-60 CR1-60 Primary crusher 6 Primary crushing (controlled) % no factor for primary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) F1-60 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-60 C1-60 Conveyor 14 Conveyor transfer point (controlled) 1421 C2-60 Conveyor 14 Conveyor transfer point (controlled) 1421 Primary Surge Primary Surge Pile / Bin 14 Conveyor transfer point (controlled) 1421 C5-60 Conveyor 14 Conveyor transfer point (controlled) 179 C6-60 Conveyor 14 Conveyor transfer point (controlled) 179 Bin Series 60 Bin 14 Conveyor transfer point (controlled) 179 bin assumed similar to conveyor transfer point F2-60 Feeder 14 Conveyor transfer point (controlled) 179 fugitive emissions from feeders assumed to be similar to conveyor drop points C1-70 Conveyor 14 Conveyor transfer point (controlled) 179 C2-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C5-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 CR1-70 Primary re-crusher 7 Secondary crushing (controlled) % no factor for secondary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) C4-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-70 C3-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-70 Simplicity screen 2 Screening (controlled) 344 C6-70 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 C7-70 Conveyor 14 Conveyor transfer point (controlled) 179 C8-70 Conveyor 14 Conveyor transfer point (controlled) 179 C9-70 Conveyor 14 Conveyor transfer point (controlled) 179 C10-70 Conveyor 14 Conveyor transfer point (controlled) 179 C11-70 Conveyor 14 Conveyor transfer point (controlled) 179 C12-70 Conveyor 14 Conveyor transfer point (controlled) 179 C13-70 Conveyor 14 Conveyor transfer point (controlled) 179 C14-70 Stacker for Surge Pile 14 Conveyor transfer point (controlled) 179 F1-61 Feeder 14 Conveyor transfer point (controlled) % located underground F2-61 Feeder 14 Conveyor transfer point (controlled) % located underground F3-61 Feeder 14 Conveyor transfer point (controlled) % located underground C1-61 Conveyor 14 Conveyor transfer point (controlled) 1421 C2-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-70 S1-61 Scalping screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-61 Secondary crusher 4 Secondary crushing % factor for tertiary crushing used, additional control assumed (full enclosure) C4-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR1-61 S3-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) CR1-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C3-61 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-61 C1-62 Conveyor 14 Conveyor transfer point (controlled) 71 S1-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) S2-62 Screen 2 Screening (controlled) % additional control assumed (full enclosure) C2-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-62 CR2-62 Tertiary crusher 5 Tertiary crushing % additional control assumed (full enclosure) C10-62 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from CR2-62 C1-64 Conveyor 14 Conveyor transfer point (controlled) 526 C11-62 Conveyor 14 Conveyor transfer point (controlled) 1176 C2-64 Conveyor 14 Conveyor transfer point (controlled) 526 Bin Series 62 Bin 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C3-64 Conveyor 14 Conveyor transfer point (controlled) 526 C4-64 Conveyor 14 Conveyor transfer point (controlled) 526 C5-64 Conveyor 14 Conveyor transfer point (controlled) 526 C6-64 Conveyor 14 Conveyor transfer point (controlled) 526 C8-64 Conveyor 14 Conveyor transfer point (controlled) 526 C14-64 Conveyor 14 Conveyor transfer point (controlled) 526 F1-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 F2-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S2-63 F3-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S3-63

111 APPENDIX E2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) F4-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from S4-63 C5-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C6-63 Conveyor 14 Conveyor transfer point (controlled) 295 Bin Series 63 Bin 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 F5-63 Feeder 14 Conveyor transfer point (controlled) % Included in emissions from CR1-63 CR1-63 Quaternary crusher 9 Fines crushing % additional control assumed (full enclosure) C15-63 Conveyor 14 Conveyor transfer point (controlled) 295 S1-63 Classifying screen 2 Screening (controlled) 294 S2-63 Classifying screen 2 Screening (controlled) 294 S3-63 Classifying screen 2 Screening (controlled) 294 S4-63 Classifying screen 2 Screening (controlled) 294 C7-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C8-63 Conveyor 14 Conveyor transfer point (controlled) 129 C16-63 Conveyor 14 Conveyor transfer point (controlled) 129 C9-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from S1-63 through S4-63 C13-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C11-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from S1-63 through S4-63 C1A-65 Conveyor 14 Conveyor transfer point (controlled) 517 C1-65 Conveyor 14 Conveyor transfer point (controlled) 517 C10-63 Conveyor 14 Conveyor transfer point (controlled) 100% Included in emissions from Series 63 Separator Screen Series 63 Separator 2 Screening (controlled) 259 C14-63 Conveyor 14 Conveyor transfer point (controlled) % Included in emissions from Series 63 Separator C17-63 Conveyor 14 Conveyor transfer point (controlled) 259 [1] ID corresponds to process flow diagram for facility and / or material [2] Select process code from Table or Table (see "T " tab) [3] Enter the control efficiency for each source - if no controls are applied, leave blank

112 APPENDIX E3: Bulk Material Handling Emissions Spreadsheet emissions: E = k (U / 2.2) 1.3 / (M / 2) 1.4 Project #W D Acton Quarry Extension - Phases 5, 6 & 7 Permanent Plant Evening Operations Drop operation Input Required TRANSFER EMISSIONS - AP-42 Section E emission factor Calculated Value / Do Not Edit k particle size multiplier (0.74, 0.35 and for TSP, PM 10 and PM 2.5 ) Comment required Average recorded hourly wind speed (m/s): 5 [1] U mean wind speed, meters per second (m/s) (miles per hour [mph]) Table Heading (do not edit) M material moisture content (%) Not Ready for Use Process Information Controls Site Data [3] ID [2] Process Trucks Material Material Control Site Silt Moisture Source Comments Loaded Handled Handled Efficiency Specific Content Content Conditions (Hourly) (Hourly) (Daily) Applied [4] Data? Valid [5] (trucks/h) (Mg) (Mg) (%) (y/n) (%) (%) LOADOUT1 Lower Plant Truck Loading 0000h-0500h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 0500h-0700h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 0700h-1900h no shipping from this location in future case LOADOUT1 Lower Plant Truck Loading 1900h-0000h no shipping from this location in future case LOADOUT2 Lower Plant Truck Loading 0000h-0500h % y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT2 Lower Plant Truck Loading 0700h-1900h % y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report, control efficiency reflects washed stone handling LOADOUT2 Lower Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping LOADOUT3 Lower Plant Truck Loading 0000h-0500h y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT3 Lower Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT3 Lower Plant Truck Loading 0700h-1900h y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT3 Lower Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping LOADOUT4 Lower Plant Truck Loading 0000h-0500h y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT4 Lower Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT4 Lower Plant Truck Loading 0700h-1900h y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT4 Lower Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping LOADOUT5 Upper Plant Truck Loading 0000h-0500h y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT5 Upper Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT5 Upper Plant Truck Loading 0700h-1900h y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT5 Upper Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping LOADOUT6 Upper Plant Truck Loading 0000h-0500h y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT6 Upper Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT6 Upper Plant Truck Loading 0700h-1900h y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT6 Upper Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping [1] 5 m/s reflects wind speeds considered under the Regulation 346 MAXLGC dispersion model [2] ID corresponds to process flow diagram for facility and / or material [3] Silt value from AP-42 Table , moisture values from on-site measurements taken by Dufferin [4] Enter the control efficiency for each source - if no controls are applied, leave blank [5] Relates to AP-42 Section

113

114 APPENDIX F1: Summary of Fugitive Emissions Acton Quarry Extension - Portable Plants - Applies to Phases 5, 6 or 7 Project #W D Total facility emissions (excluding blasting, roadways, erosion from piles) 1.75 g/s Emissions by AERMOD Source Group (Modelled Sources Only) AERMOD Emission Source Area Source Rate Area Emission ID Rate (g/s) (m²) (g/m²/s) DRLL_P# n/a n/a QTL_P# n/a n/a (daytime) n/a n/a (evening) PLNT_P# 0.96 n/a n/a LOADOUT# 0.76 n/a n/a Daytime shipping. Wind dependent - based on a wind speed of 5m/s.

115 APPENDIX F1: Summary of Fugitive Emissions Acton Quarry Extension - Portable Plants - Applies to Phases 5, 6 or 7 Project #W D CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) DRLL_P# DRLL_P# Drilling at working face 8.40E E 0.31% QTL_P# QTL_P# Quarry truck loading at working face (daytime) 1.68E E 0.74% Quarry truck loading at working face (evening) 1.68E E 0.43% F1 PLNT_P# Feeder 7.00E E 0.91% CR1 PLNT_P# Primary Crusher 6.00E E 7.43% C1 PLNT_P# Conveyor 7.00E E 0.91% S1 PLNT_P# Primary Screen 1.10E E 13.71% C2 PLNT_P# Conveyor 7.00E E 0.22% C3 PLNT_P# Conveyor 7.00E E 0.69% CR2 PLNT_P# Secondary Crusher 6.00E E 5.71% C4 PLNT_P# Conveyor 7.00E E 0.80% S2 PLNT_P# Secondary Screen 1.10E E 12.00% C6 PLNT_P# Conveyor 7.00E E 0.69% S3 PLNT_P# Tertiary Screen 1.10E E 10.28% C7 PLNT_P# Conveyor 7.00E E 0.17% C8 PLNT_P# Conveyor 7.00E E 0.50% C5 PLNT_P# Conveyor 7.00E E 0.11% CR3 PLNT_P# Crusher 6.00E E 0.97% TOTAL PROCESSING PLANT EMISSIONS % BULK MATERIAL HANDLING / TRANSFER EMISSIONS - AP-42 Section ID AERMOD Description TSP Source Controlled Emission Data % of Total ID AP-42 Rate Quality Emissions Factor (kg/mg) (g/s) LOADOUT5/6/7 LOADOUT# Phase 5-7 Portable Plant Truck Loading 0000h-0500h 2.38E A LOADOUT5/6/7 LOADOUT# Phase 5-7 Portable Plant Truck Loading 0500h-0700h 2.38E-03 A LOADOUT5/6/7 LOADOUT# Phase 5-7 Portable Plant Truck Loading 0700h-1900h 2.38E A 43.42% LOADOUT5/6/7 LOADOUT# Phase 5-7 Portable Plant Truck Loading 1900h-0000h 2.38E-03 A TOTAL TRANSFER EMISSIONS (DAYTIME ONLY) % Note: Transfer emissions are wind-speed-dependent. The sample emissions factor and rate provided reflect a wind speed of 5m/s.

116 APPENDIX F2: Crushed Stone Processing & Pulverized Mineral Processing Emissions Spreadsheet Project #W D Acton Quarry Extension - Portable Plants - Applies to Phases 5, 6 or 7 Input Required CRUSHED STONE PROCESSING & PULVERIZED MINERAL PROCESSING - AP-42 Section Calculated Value / Do Not Edit Comment required Table Heading (do not edit) Not Ready for Use ID [1] Process Name / Description Process AP-42 Process Material Control Comments Code [2] Description Handled Efficiency (Hourly) Applied [4] (Mg) (%) DRLL_P# Drilling at working face 15 Wet drilling: unfragmented stone j 235 Hole 4 1/2" diameter, 30m deep, assumed density of 2500kg/m³ QTL_P# Quarry truck loading at working face (daytime) 16 Truck unloading: fragmented stone j 2700 Loading pit trucks at working face - hourly value based on both permanent and portable processing plants (daytime) QTL_P# Quarry truck loading at working face (evening) 16 Truck unloading: fragmented stone j 1600 Loading pit trucks at working face - hourly value based on permanent plant only (evening) F1 Feeder 14 Conveyor transfer point (controlled) 800 CR1 Primary Crusher 6 Primary crushing (controlled) 800 no factor for primary crushing available, factor for tertiary crushing used, additional control assumed (enclosure) C1 Conveyor 14 Conveyor transfer point (controlled) 800 S1 Primary Screen 2 Screening (controlled) 800 C2 Conveyor 14 Conveyor transfer point (controlled) 200 C3 Conveyor 14 Conveyor transfer point (controlled) 600 CR2 Secondary Crusher 7 Secondary crushing (controlled) 600 C4 Conveyor 14 Conveyor transfer point (controlled) 700 S2 Secondary Screen 2 Screening (controlled) 700 C6 Conveyor 14 Conveyor transfer point (controlled) 600 S3 Tertiary Screen 2 Screening (controlled) 600 C7 Conveyor 14 Conveyor transfer point (controlled) 150 C8 Conveyor 14 Conveyor transfer point (controlled) 450 C5 Conveyor 14 Conveyor transfer point (controlled) 100 CR3 Crusher 8 Tertiary crushing (controlled) 100 [1] ID corresponds to process flow diagram for facility and / or material [2] Select process code from Table or Table (see "T " tab) [3] Enter the control efficiency for each source - if no controls are applied, leave blank

117 APPENDIX F3: Bulk Material Handling Emissions Spreadsheet operation emissions: E = k (U / 2.2) 1.3 / (M / 2) 1.4 Project #W D Acton Quarry Extension - Portable Plants - Applies to Phases 5, 6 or 7 Drop Input Required TRANSFER EMISSIONS - AP-42 Section E emission factor Calculated Value / Do Not Edit k particle size multiplier (0.74, 0.35 and for TSP, PM 10 and PM 2.5 ) Comment required Average recorded hourly wind speed (m/s): 5 [1] U mean wind speed, meters per second (m/s) (miles per hour [mph]) Table Heading (do not edit) M material moisture content (%) Not Ready for Use Process Information Controls Site Data [3] ID [2] Process Trucks Material Material Control Site Silt Moisture Source Comments Loaded Handled Handled Efficiency Specific Content Content Conditions (Hourly) (Hourly) (Daily) Applied [4] Data? Valid [5] (trucks/h) (Mg) (Mg) (%) (y/n) (%) (%) LOADOUT5/6/7 Phase 5-7 Portable Plant Truck Loading 0000h-0500h y 1.6% 2.6% valid early morning - hourly rates 37% of the daytime volume LOADOUT5/6/7 Phase 5-7 Portable Plant Truck Loading 0500h-0700h y 1.6% 2.6% valid morning - no shipping LOADOUT5/6/7 Phase 5-7 Portable Plant Truck Loading 0700h-1900h y 1.6% 2.6% valid daytime - hourly traffic values from Aercoustics Report LOADOUT5/6/7 Phase 5-7 Portable Plant Truck Loading 1900h-0000h y 1.6% 2.6% valid evening - no shipping [1] 5 m/s used as typical wind speed for sample calculations [2] ID corresponds to process flow diagram for facility and / or material [3] Silt value from AP-42 Table , moisture values from on-site measurements taken by Dufferin [4] Enter the control efficiency for each source - if no controls are applied, leave blank [5] Relates to AP-42 Section

118 Appendix F4: Assessment of Typical Portable Plant Generator Emissions W D Acton Quarry Extension Unit Description Identifier Contaminant Emission Data Specified Specified Emission Rate Emission Power Carried Forward Factor [1,2] Input [2] for Dispersion Modelling GEN1 Generator carbon monoxide 0.41 g/bhp/h 3771 hp 0.43 g/s oxides of nitrogen 5.05 g/bhp/h 3771 hp 5.30 g/s total suspended particulate g/bhp/h 3771 hp g/s Notes: [1] From Caterpillar Specification for 2250kW Prime Power Unit (assumed to be typical of portable plant generator set) [2] Generator horsepower (2250kW or 3017hp) assumed to be 80% of engine power output. Sample Calculations: CO Emission: 3771 hp 0.41 g 1 h 1 bhp h 3600 s = 0.43 g/s

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