November 13, Subject: Air Quality and Noise Monitoring Summary for October 26 to 30, 2015

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1 CH2M [KWO] 72 Victoria treet uite 300 Kitchener, O 2G 4Y icole Wilmot, M, MCIP, RPP Manager of Policy Planning, Community ervices The Corporation of the City of Brantford 100 Wellington quare Brantford, O 3T 2M AA.OV /901/02FLM/004 ovember 13, 2015 ubject: Air Quality and oise Monitoring ummary for October 26 to 30, 2015 ydenham Pearl Brownfield, Brantford Dear Ms. Wilmot, The Corporation of the City of Brantford (City) retained CH2M HILL Canada Limited (CH2M) to provide environmental services for 17 and 22 ydenham treet, collectively known as the ydenham Pearl Brownfield ite (ite), located within Brantford, Ontario. Remediation activities occurring onsite are expected to cause dust from soil handling and transport, noise from excavation/remedial activities and emissions of volatile organic compounds (VOCs) to the air during the VOC targeted remediation. To provide information on the ambient air and noise, monitoring is occurring at the ite during remedial activities until the scheduled completion at the end of ovember. Total suspended particulate (TP) sampling and noise level are monitored daily at four stations (AQ1 through AQ4) around the ite; locations are indicated on the ite Plan attached. Weather statistics are collected from a meteorological monitoring station (W1), which is also shown on the attached ite Plan. TP results will be compared to the current Ministry of the nvironment and Climate Change (MOCC) 24 hour average Ambient Air Quality Criteria (AAQC) (MO, 2012) of 120 μg/m 3, and a corresponding 1 hour average TP of 292 μg/m 3 to assess the potential for exceeding the TP criterion. oise limits were based on alternative sources as there are no regulatory limits defined by the MOCC or the City of Brantford. These guidelines indicate noise attributable to excavation/remediation activities should generally aim to be below 70 decibels (dba) or 5 dba over the baseline (pre construction) noise levels (whichever is higher) (Department of nvironment & Climate Change ew outh Wales, 2009; Massachusetts Turnpike Authority, 2002). Background sampling for TP and noise was conducted from October 10 to 12, as summarized in Table 1 below. Table 1. ummary of Background Monitoring ydenham Pearl Brownfield, Brantford TP, µg/m 3 oise Reading, 1 hr L eq dba (7am 7pm) 24 hr Average Max Min Max Min AQ AQ AQ AQ otes: TP not corrected for meteorological events (i.e. high humidity)

2 icole Wilmot, M, MCIP, RPP Page 2 ovember 13, 2015 The TP sampling was conducted to have an understanding of baseline conditions and ensure there was no background source contributing to particulate levels. The noise levels were measured to determine whether the action level would be 70 dba or 5 dba over the baseline. Based on the background noise readings, the action level for noise used for the ite is 70 dba based on a 1 hour equivalent continuous noise level (L eq ). It is expected, however, during heavy operations the noise limits may be exceeded due to proximity of activities to the property boundaries. This excessive noise will be limited to working hours (7am to 7pm) and should any noise concerns be raised, efforts will be made to mitigate the issue. The VOC monitoring program includes monitoring at four locations (shown as 1 to 4 on the ite Plan in Attachment 2) on the south property line to measure the potential exposure to residents in proximity to the VOC remediation area. amples are collected using 6 litre umma canisters during the period when VOC remediation is occurring. amples were analyzed at an accredited lab, and results compared to the MOCC 24 hour average AAQC for VOCs (MO, 2012) as listed in the summaries in Attachment 2. Monitoring commenced as of October 28, to correspond with the start of the VOC remediation. Results ummary A summary of the daily monitoring activities (TP and noise) that occurred between October 26 th and 31 th are provided in Attachment 1. Results indicate there were generally no TP and noise exceedances or environmental monitoring concerns for the initial part of the week, with the exception of some battery/power problems at a couple of the stations. On October 29 through 31, elevated sound levels occurred within working hours due to major excavation and soil blending occurring. VOC analytical results from the ambient air samples are provided in Attachment 2. All results were below the MOCC AAQC, with the exception of some parameters on October 28: 1,4 dichlorobenzene was detected at an elevated concentration at tation 2, but thought to be due to an issue with excess remaining vacuum in the umma canister. Also, due to this excess vacuum in the sample, some adjusted laboratory method detection limits exceeded the MOCC AAQC, but no contaminants were measured above these adjusted detection limits. All detected concentrations and laboratory method detection limits were below the MOCC AAQC in subsequent sampling. We trust the information included in this letter to be complete and in order. hould the City of Brantford or MOCC have any outstanding concerns further to the work completed and the results obtained, please do not hesitate to contact the undersigned. References Department of nvironment & Climate Change ew outh Wales, Interim Construction oise Guideline. July. Massachusetts Turnpike Authority, Construction oise Control pecification , Central Artery/Tunnel Project, Boston, MA. Ministry of the nvironment, Ontario s Ambient Air Quality Criteria. tandards Development Branch. April Regards, CH2M HILL Canada Limited d Taves, M.c. Project Manager Darryl Chartrand, Ph.D. Principal Technologist Attachment: 1 Daily Monitoring ummary 2 Laboratory Certificates of Analysis CH2M HILL CAADA LIMITD COMPAY PROPRITARY

3 icole Wilmot, M, MCIP, RPP Page 3 ovember 13, 2015 Copy: Jennifer Volpato, MOCC, Guelph tacey Tormey, MOCC, Guelph CH2M HILL CAADA LIMITD COMPAY PROPRITARY

4 Attachment 1 Daily Monitoring ummary

5 DUT (TOTAL PARTICULAT) DAT: 26-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ1 A ee ote 1(a) AQ A AQ A AQ A Max Hourly TP ACL (ug/m3) (ug/m3) AQ1 A ee ote 1(a) AQ A AQ A AQ A OUD LVL Max Hourly PL ACL (dba) (dba) AQ1 A 70 0 ee ote 1(a) AQ A AQ A AQ A Barometer 29.8 "Hg Outdoors Humidity 68.9 % Temperature 7.2 C Rain Rate 0.0 cm/day Wind peed 1.0 km/h (a) Limited sun exposure and low internal/external battery voltage caused equipment failure. W W WW

6 DUT (TOTAL PARTICULAT) DAT: 27-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ1 A ee ote 1(a) AQ A AQ A AQ A Max Hourly TP ACL (ug/m3) (ug/m3) AQ1 A ee ote 1(a) AQ A AQ A AQ A OUD LVL Max Hourly PL ACL (dba) (dba) AQ1 A 70 0 ee ote 1(a) AQ A AQ A AQ A Barometer 29.7 "Hg Outdoors Humidity 72.1 % Temperature 7.3 C Rain Rate 0.0 cm/day Wind peed 5.3 km/h (a) Limited sun exposure and low internal/external battery voltage caused equipment failure. W W WW

7 DUT (TOTAL PARTICULAT) DAT: 28-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ ee ote 1(a) (g) AQ A AQ ee ote 1(b) (g) AQ4 A ee ote 1(c) (g) Max Hourly TP ACL (ug/m3) (ug/m3) AQ ee ote 1(a) (g) AQ A AQ ee ote 1(b) (g) AQ4 A ee ote 1(c) (g) OUD LVL Max Hourly PL ACL (dba) (dba) AQ A AQ ee ote 1(e) (g) AQ ee ote 1(f) (g) AQ A Barometer 29.1 "Hg Outdoors Humidity 87.1 % Temperature 11.6 C Rain Rate 86.6 cm/day Wind peed 6.8 km/h (a) Limited sun exposure and low internal/external battery voltage caused equipment failure. Heavy rain also encountered during this period.data loss from 12:00-9:48am. (b) Limited sun exposure and low internal/external battery voltage caused equipment failure. Heavy rain also encountered during this period. Data loss from 12:27-8:43. (c) Limited sun exposure and low internal/external battery voltage caused equipment failure. Heavy rain also encountered during this period. o data retained. (d) occurred between 8-9am and 10-11am during periods of heavy excavation. Heavy rain also encountered during this period. (f) occurred between 1-2pm during periods of heavy excavation. Heavy rain also encountered during this period. W WW W CAUTIO: (g) HAVY RAI VT: Use data with caution (in particular the noise data which would typically be considered invalid per PC- 103)

DUT (TOTAL PARTICULAT) DAT: 29-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ1 12.7 120 0 A AQ2 7.4 120 0 ee ote 1(a) AQ3 16.1 120 0 A AQ4 3.0 120 0 ee ote 1(b) Max Hourly TP ACL (ug/m3) (ug/m3) ` AQ1 21.

8 DUT (TOTAL PARTICULAT) DAT: 29-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ A AQ ee ote 1(a) AQ A AQ ee ote 1(b) Max Hourly TP ACL (ug/m3) (ug/m3) ` AQ A AQ ee ote 1(a) AQ A AQ ee ote 1(b) OUD LVL Max Hourly PL ACL (dba) (dba) AQ A AQ A AQ A AQ A Barometer 28.9 "Hg Outdoors Humidity 63.1 % Temperature 8.3 C Rain Rate 0.0 cm/day Wind peed 12.5 km/h (a) Limited sun exposure and low internal/external battery voltage caused DustTrak equipment failure. Data loss from 6:59-11:59am. (b) Limited sun exposure and low internal/external battery voltage caused DustTrak equipment failure. Data loss from 12:00-10:30am. Limited data collected from 10:30-15:57. W W WW

9 DUT (TOTAL PARTICULAT) DAT: 30-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ A AQ ee ote 1(d) AQ A AQ4 A ee ote 1(a) Max Hourly TP (ug/m 3 ACL (ug/m 3 )* ) AQ A AQ ee ote 1(d) AQ A AQ4 A ee ote 1(a) OUD LVL Max Hourly PL ACL (dba) (dba) AQ ee ote 1(b) AQ ee ote 1(c) AQ A AQ A Barometer 29.4 "Hg Outdoors Humidity 67.9 % Temperature 6.4 C Rain Rate 0.0 cm/day Wind peed 2.6 km/h (a) quipment failure. o data for DustTrak. Limited data collection for oundpro (12:00-9:48) (b) levated sound levels occurred between 9am-6pm. Major excavation and soil blending activities ongoing. (c) levated sound levels occurred between 11am-6pm. Major excavation and soil blending activities ongoing. (d) quipment failure. Limited data collection (1:15pm-9:33pm) W W *1-hr TP ACL adjusted to account for increase to 12 hour work day (expected to occur for maximum of 2 weeks) WW

10 DUT (TOTAL PARTICULAT) DAT: 31-Oct-15 Average 24-Hr TP 24-Hr AAQC TP AQ A AQ2 A ee ote 1(a) AQ A AQ ee ote 1(b) Max Hourly TP (ug/m 3 ACL (ug/m 3 )* ) AQ A AQ2 A ee ote 1(a) AQ A AQ ee ote 1(b) OUD LVL Max Hourly PL ACL (dba) (dba) AQ ee ote 1(c) AQ2 A 70 0 ee ote 1(a) AQ A AQ A Barometer 29.3 "Hg Outdoors Humidity 74.0 % Temperature 6.1 C Rain Rate 5.2 cm/day Wind peed 2.1 km/h (a) quipment failure. o data recorded. (b) ome data capture anomalies. Averages based on available data. (c) levated sound levels occurred between 7am-9pm and 11am-5:00pm. Major excavation and soil blending activities ongoing. W W *1-hr TP ACL adjusted to account for increase to 12 hour work day (expected to occur for maximum of 2 weeks) WW

11 Attachment 2 Daily VOC Data ummary

12 VOLATIL ORGAIC COMPOUD DAT: 28-Oct-15 Key Contaminants 1 Average 24-Hr 24-Hr AAQC ,1,1-Trichloroethane < < 3.66 < < ,000 A 1,1-Dichloroethane < < 2.71 < < A 1,2,4-Trichlorobenzene < 3.71 < 24.9 < 3.71 < A 1,2,4-Trimethylbenzene < 2.46 < 16.5 < 2.46 < A 1,2-Dichlorobenzene < < 4.03 < < ,527 A 1,3,5-Trimethylbenzene < 2.46 < 16.5 < 2.46 < A 1,3-Butadiene < 1.11 < 7.41 < 1.11 < ee ote 1(a) 1,4-Dichlorobenzene ee ote 1((b) 1,4-Dioxane < 3.60 < 24.1 < 3.60 < ,500 A 2-propanol (isopropyl alcohol) < 2.46 < 16.5 < 2.46 < A 2-Propanone (acetone) 8.42 < A Benzene < 2.14 < < A Bromoform < 2.07 < 13.9 < 2.07 < ee ote 1(a) Carbon Tetrachloride < < < ee ote 1(a) Chlorobenzene < < 3.08 < < ,438 A Chloroethane < < 5.30 < < ,600 A Chloroform < < 3.27 < < ee ote 1(a) Cyclohexane < < 4.61 < < ,100 A Dichlorodifluoromethane 2.73 < ,000 A Dichloroethylene, 1,2-cis < < 2.66 < < A Dichloroethylene, 1,2-trans < < 2.66 < < A thanol ,804 A thyl Acetate < 3.60 < 24.1 < 3.60 < ,804 A thyl Benzene < < 2.91 < < ,000 A thylene Dibromide < < 5.15 < < ee ote 1(a) Heptane < 1.23 < 8.24 < 1.23 < ,000 A Hexane < 1.06 < 7.08 < 1.06 < ,500 A Methyl thyl Ketone < 2.95 < 19.8 < 2.95 < ,000 A Methyl Isobutyl Ketone < 4.10 < 27.4 < 4.10 < ,200 A Methyl t-butyl ether (MTB) < < 4.83 < < ,000 A Methylene Chloride (Dichloromethane) < 2.78 < 18.6 < 2.78 < A aphthalene < 2.62 < 17.6 < 2.62 < A tyrene < 2.85 < < A Tetrahydrofuran < 1.18 < 7.90 < 1.18 < ,000 A Toluene 2.56 < ,000 A Trichloroethylene < 3.60 < < A Trichlorofluoromethane (FRO 11) 1.54 < ,000 A Vinyl Chloride < < 1.71 < < ee ote 1(a) Xylenes < 1.30 < 8.73 < 1.30 < A OT: 1 Contaminants with MOCC AAQCs. 1 hr AAQCs converted to 24 hr AAQCs based on MOC Averaging Period Conversion Factor. Barometer 29.1 "Hg Outdoors Humidity 87.1 % Temperature 11.6 C Rain Rate 86.6 cm/day Wind peed 6.8 km/h (a) All contaminants below method detection limit for this sample. (b) Under review with Maxxam. Likely issue with vacuum in summa canister (23" vacuum left in summa at end of 24hr sample; 12" vacuum upon arrival at Maxxam) W W WW

13 VOLATIL ORGAIC COMPOUD DAT: 29-Oct-15 Key Contaminants 1 Average 24-Hr (ug/m3 ) 24-Hr AAQC ,1,1-Trichloroethane <0.546 <0.546 <0.546 < ,000 A 1,1-Dichloroethane <0.405 <0.405 <0.405 < A 1,2,4-Trichlorobenzene <3.71 <3.71 <3.71 < A 1,2,4-Trimethylbenzene <2.46 <2.46 <2.46 < A 1,2-Dichlorobenzene <0.601 <0.601 <0.601 < ,527 A 1,3,5-Trimethylbenzene <2.46 <2.46 <2.46 < A 1,3-Butadiene <1.11 <1.11 <1.11 < A 1,4-Dichlorobenzene < A 1,4-Dioxane <3.60 <3.60 <3.60 <3.60 3,500 A 2-propanol (isopropyl alcohol) <2.46 <2.46 <2.46 < A 2-Propanone (acetone) A Benzene A Bromoform <2.07 <2.07 <2.07 < A Carbon Tetrachloride < <0.629 < A Chlorobenzene <0.460 <0.460 <0.460 < ,438 A Chloroethane <0.792 <0.792 <0.792 < ,600 A Chloroform <0.488 <0.488 <0.488 < A Cyclohexane <0.688 <0.688 <0.688 < ,100 A Dichlorodifluoromethane ,000 A Dichloroethylene, 1,2-cis < <0.396 < A Dichloroethylene, 1,2-trans <0.396 <0.396 <0.396 < A thanol ,804 A thyl Acetate <3.60 <3.60 <3.60 <3.60 7,804 A thyl Benzene <0.434 <0.434 <0.434 < ,000 A thylene Dibromide <0.768 <0.768 <0.768 < A Heptane <1.23 <1.23 <1.23 < ,000 A Hexane <1.06 <1.06 < ,500 A Methyl thyl Ketone <2.95 <2.95 <2.95 <2.95 1,000 A Methyl Isobutyl Ketone <4.10 <4.10 <4.10 <4.10 1,200 A Methyl t-butyl ether (MTB) <0.721 <0.721 <0.721 < ,000 A Methylene Chloride (Dichloromethane) <2.78 <2.78 <2.78 < A aphthalene <2.62 <2.62 <2.62 < A tyrene <0.426 <0.426 <0.426 < A Tetrahydrofuran <1.18 <1.18 <1.18 < ,000 A Toluene ,000 A Trichloroethylene < < A Trichlorofluoromethane (FRO 11) <1.12 <1.12 6,000 A Vinyl Chloride <0.256 <0.256 <0.256 < A Xylenes <1.30 <1.30 <1.30 < A OT: 1 Contaminants with MOCC AAQCs. 1 hr AAQCs converted to 24 hr AAQCs based on MOC Averaging Period Conversion Factor. Barometer 28.9 "Hg Outdoors Humidity 63.1 % Temperature 8.3 C Rain Rate 0.0 cm/day Wind peed 12.5 km/h W W WW

14 VOLATIL ORGAIC COMPOUD DAT: 30-Oct-15 Key Contaminants 1 Average 24-Hr (ug/m3 ) 24-Hr AAQC ,1,1-Trichloroethane < < < < ,000 A 1,1-Dichloroethane < < < < A 1,2,4-Trichlorobenzene < 3.71 < 3.71 < 3.71 < A 1,2,4-Trimethylbenzene < 2.46 < 2.46 < 2.46 < A 1,2-Dichlorobenzene < < < ,527 A 1,3,5-Trimethylbenzene < 2.46 < 2.46 < 2.46 < A 1,3-Butadiene < 1.11 < 1.11 < 1.11 < A 1,4-Dichlorobenzene A 1,4-Dioxane < 3.60 < 3.60 < 3.60 < ,500 A 2-propanol (isopropyl alcohol) < 2.46 < 2.46 < 2.46 < A 2-Propanone (acetone) A Benzene A Bromoform < 2.07 < 2.07 < 2.07 < A Carbon Tetrachloride < < A Chlorobenzene < < < < ,438 A Chloroethane < < < < ,600 A Chloroform < < < < A Cyclohexane < < < < ,100 A Dichlorodifluoromethane ,000 A Dichloroethylene, 1,2-cis < < < < A Dichloroethylene, 1,2-trans < < < < A thanol ,804 A thyl Acetate < 3.60 < 3.60 < 3.60 < ,804 A thyl Benzene < ,000 A thylene Dibromide < < < < A Heptane < 1.23 < 1.23 < 1.23 < ,000 A Hexane < 1.06 < ,500 A Methyl thyl Ketone < 2.95 < 2.95 < 2.95 < ,000 A Methyl Isobutyl Ketone < 4.10 < 4.10 < 4.10 < ,200 A Methyl t-butyl ether (MTB) < < < < ,000 A Methylene Chloride (Dichloromethane) < 2.78 < 2.78 < 2.78 < A aphthalene < 2.62 < 2.62 < 2.62 < A tyrene < < < < A Tetrahydrofuran < 1.18 < 1.18 < 1.18 < ,000 A Toluene ,000 A Trichloroethylene A Trichlorofluoromethane (FRO 11) ,000 A Vinyl Chloride < < < < A Xylenes A OT: 1 Contaminants with MOCC AAQCs. 1 hr AAQCs converted to 24 hr AAQCs based on MOC Averaging Period Conversion Factor. Barometer 29.3 "Hg Outdoors Humidity 74.0 % Temperature 6.1 C Rain Rate 5.2 cm/day Wind peed 2.1 km/h W W WW

VOLATIL ORGAIC COMPOUD DAT: 31-Oct-15 Key Contaminants 1 Average 24-Hr (ug/m3 ) 24-Hr AAQC 1 2 3 4 1,1,1-Trichloroethane 0.973 0.567 < 0.546 < 0.546 115,000 A 1,1-Dichloroethane < 0.405 < 0.

15 VOLATIL ORGAIC COMPOUD DAT: 31-Oct-15 Key Contaminants 1 Average 24-Hr (ug/m3 ) 24-Hr AAQC ,1,1-Trichloroethane < < ,000 A 1,1-Dichloroethane < < < < A 1,2,4-Trichlorobenzene < 3.71 < 3.71 < 3.71 < A 1,2,4-Trimethylbenzene < 2.46 < 2.46 < 2.46 < A 1,2-Dichlorobenzene < < < < ,527 A 1,3,5-Trimethylbenzene < 2.46 < 2.46 < 2.46 < A 1,3-Butadiene < 1.11 < 1.11 < 1.11 < A 1,4-Dichlorobenzene < < A 1,4-Dioxane < 3.60 < 3.60 < 3.60 < ,500 A 2-propanol (isopropyl alcohol) < 2.46 < 2.46 < 2.46 < A 2-Propanone (acetone) A Benzene A Bromoform < 2.07 < 2.07 < 2.07 < A Carbon Tetrachloride < < < A Chlorobenzene < < < < ,438 A Chloroethane < < < < ,600 A Chloroform < < < < A Cyclohexane < < < < ,100 A Dichlorodifluoromethane ,000 A Dichloroethylene, 1,2-cis < < < < A Dichloroethylene, 1,2-trans < < < < A thanol ,804 A thyl Acetate < 3.60 < 3.60 < 3.60 < ,804 A thyl Benzene < < ,000 A thylene Dibromide < < < < A Heptane < 1.23 < 1.23 < 1.23 < ,000 A Hexane < 1.06 < 1.06 < 1.06 < ,500 A Methyl thyl Ketone < 2.95 < 2.95 < 2.95 < ,000 A Methyl Isobutyl Ketone < 4.10 < 4.10 < 4.10 < ,200 A Methyl t-butyl ether (MTB) < < < < ,000 A Methylene Chloride (Dichloromethane) < 2.78 < 2.78 < 2.78 < A aphthalene < 2.62 < 2.62 < 2.62 < A tyrene < < < < A Tetrahydrofuran < 1.18 < 1.18 < 1.18 < ,000 A Toluene ,000 A Trichloroethylene < < A Trichlorofluoromethane (FRO 11) ,000 A Vinyl Chloride < < < < A Xylenes 2.22 < A OT: 1 Contaminants with MOCC AAQCs. 1 hr AAQCs converted to 24 hr AAQCs based on MOC Averaging Period Conversion Factor. Barometer 29.3 "Hg Outdoors Humidity 74.0 % Temperature 6.1 C Rain Rate 5.2 cm/day Wind peed 2.1 km/h W W WW

November 2, Subject: Air Quality and Noise Monitoring Summary for October 13 to 23, 2015 Sydenham-Pearl Brownfield, Brantford

November 2, Subject: Air Quality and Noise Monitoring Summary for October 13 to 23, 2015 Sydenham-Pearl Brownfield, Brantford CH2M [KWO [ KWO] 72 Victoria Street Suite 300 Kitchener, ON N2G 4Y9 15195793500 www.ch2m.com Nicole Wilmot, MES, MCIP, RPP Manager of Policy Planning, Community Services The Corporation of the City of