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1 Content Copy Of Original Enbridge Pipelines Inc St NW Edmonton, Alberta T5J 3N9 Ministry of the Environment and Climate Change Ministère de l Environnement et de l Action en matière de changement climatique Site Location: 2224 Nebo Road, Hamilton Lot 2, Concession 5. East, Milgrove 2418 Allen Road West, Lincoln Lot 7, Concession 2, Milton Niagara Parkway, Niagara Falls 225 Lasalle Line, St. Clair Township 259 Lasalle Line, St. Clair Township 358 Lasalle Line, Sarnia 679 Lasalle Line, St. Clair Township ENVIRONMENTAL COMPLIANCE APPROVAL NUMBER 7249-A63JSZ Issue Date: May 20, 2016 You have applied under section 20.2 of Part II.1 of the Environmental Protection Act, R.S.O. 1990, c. E. 19 (Environmental Protection Act) for approval of: the stormwater management works at the above site locations to serve nine (9) Enbridge Stations for the detention and disposal of wastewater, consisting of the following: Nanticoke Junction - an unmanned industrial site located at 2224 Nebo Road, Hamilton, consisting of electrical building, PIG traps, small chemical storage tank within two bermed stormwater retention areas of approximately 175 m 3 in total storage volume, discharging through a gated culvert to a swale northeast of the site and through a gated culvert to a drainage ditch south of the site, both draining to an unnamed tributary of Twenty Mile Creek; Milgrove Junction - an unmanned industrial site located on Lot 2, Concession 5, Milgrove consisting of flowmeter, underground valves, electrical building, PIG traps within a bermed stormwater retention area of approximately 155 m 3 in storage volume, discharging through two gated culverts to a small swale south of the site draining to Bronte Creek; Smithville Station - an unmanned industrial site located at 2418 Allen Road West, Lincoln consisting of flowmeter, underground valves, electrical building, within a bermed stormwater retention area of approximately 363 m 3 in storage volume, discharging through a gated culvert to a roadside ditch east of the site;

2 Ninth Line Junction - an unmanned industrial site located on Lot 7 Concession 2, Milton consisting of underground valves, electrical building, PIG traps within a bermed stormwater retention area of approximately 99 m 3 in storage volume, discharging through a gated culvert to a swale west of the site, draining to an unnamed tributary of Joshua Creek; West Niagara Compound - an unmanned industrial site located at Niagara Parkway, Niagara Falls consisting of electrical building, PIG traps within a bermed stormwater retention area of approximately 146 m 3 in storage volume, discharging through a gated culvert to a roadside southeast of the site, draining eventually to Niagara River; Shell Take Off - an unmanned industrial site located at 225 Lasalle Line, St. Clair Township consisting of flowmeter, electrical building, PIG trap, densitometer, within a bermed stormwater retention area of approximately 169 m 3 in storage volume, discharging through a gated culvert to a roadside ditch on Lasalle Road northwest of the site; Suncor Take Off - an unmanned industrial site located at 259 Lasalle Line, St. Clair Township consisting of flowmeter, electrical building, within two bermed stormwater retention areas of approximately 140 m 3 in total storage volume, discharging discharging through a gated culvert northwest of the site and through a gated culvert north of the site to a roadside ditch on Lasalle Road; Suncor Metering - an unmanned industrial site located at 358 Lasalle Line, Sarnia consisting of electrical building, underground valves, Prover Pipe, small laboratory building, within a bermed stormwater retention area of approximately 394 m 3 in storage volume, discharging through a gated culvert to a swale southwest of the site; Nova Take Off - an unmanned industrial site located at 679 Lasalle Line, St. Clair Township consisting of electrical building, densitometer, within a bermed stormwater retention area of approximately 331 m 3 in storage volume, discharging through a gated culvert to a roadside ditch north of the site; including all other controls, electrical equipment, instrumentation, piping, pumps, valves and appurtenances essential for the proper operation of the aforementioned sewage works, all in accordance with the submitted supporting documents listed in Schedule A. For the purpose of this environmental compliance approval, the following definitions apply: "Approval" means this entire document and any schedules attached to it, and the application; "Director" means a person appointed by the Minister pursuant to section 5 of the EPA for the purposes of Part II.1 of the EPA;

3 "EPA" means the Environmental Protection Act, R.S.O. 1990, c.e.19, as amended; "Discharge Event" means the controlled discharge over a number of consecutive hours of a discrete volume of effluent from one of the nine unmanned industrial stations; "District Manager" means the District Manager of the local office of the Ministry listed below for the district in which the site is located; Hamilton District Office - Nanticoke Junction, Milgrove Junction Halton-Peel District Office - Ninth Line Junction Niagara District Office - Smithville Station, West Niagara Compound Sarnia District Office - Shell Take Off, Suncor Take Off, Suncor Metering, Nova Take Off "Ministry" means the ministry of the government of Ontario responsible for the EPA and OWRA and includes all officials, employees or other persons acting on its behalf; "OWRA" means the Ontario Water Resources Act, R.S.O. 1990, c. O.40, as amended; "Owner" means Enbridge Pipelines Inc. and its successors and assignees; "Works" means the sewage works described in the Owner's application, this Approval and in the supporting documentation referred to herein, to the extent approved by this Approval. You are hereby notified that this environmental compliance approval is issued to you subject to the terms and conditions outlined below: TERMS AND CONDITIONS 1. GENERAL CONDITION (1) The Owner shall ensure that any person authorized to carry out work on or operate any aspect of the Works is notified of this Approval and the conditions herein and shall take all reasonable measures to ensure any such person complies with the same. (2) Except as otherwise provided by these conditions, the Owner shall design, build, install, operate and maintain the Works in accordance with the description given in this Approval, and the application for approval of the Works. (3) Where there is a conflict between a provision of any document in the schedule referred to in this Approval and the conditions of this Approval, the Conditions in this Approval shall take precedence, and where there is a conflict between the documents in the schedule, the document bearing the most recent date shall prevail. (4) Where there is a conflict between the documents listed in the Schedule A, and the application, the application shall take precedence unless it is clear that the purpose of the document was to amend the application. (5) The Conditions of this Approval are severable. If any Condition of this Approval, or the application of any requirement of this Approval to any circumstance, is held invalid or unenforceable, the application of such condition to other circumstances and the remainder of this Approval shall not be affected thereby. 2. CHANGE OF OWNER

4 (1) The Owner shall notify the District Manager and the Director, in writing, of any of the following changes within thirty (30) days of the change occurring: (a) change of Owner; (b) change of address of the Owner; (c) change of partners where the Owner is or at any time becomes a partnership, and a copy of the most recent declaration filed under the Business Names Act, R.S.O. 1990, c.b17 shall be included in the notification to the District Manager; (d) change of name of the corporation where the Owner is or at any time becomes a corporation, and a copy of the most current information filed under the Corporations Information Act, R.S.O. 1990, c. C39 shall be included in the notification to the District Manager; (2) In the event of any change in ownership of the Works, the Owner shall notify in writing the succeeding owner of the existence of this Approval, and a copy of such notice shall be forwarded to the District Manager and the Director. 3. OPERATION AND MAINTENANCE (1) The Owner shall ensure that the Works and related equipment and appurtenances which are installed or used to achieve compliance with this Approval are properly operated and maintained. (2) The Owner may discharge effluent from Works subject to the following limitations, unless otherwise required in writing by this Approval or by the District Manager: (a) no discharge shall be allowed unless the Owner has carried out a prior visual inspection of the retained effluent at a site and is satisfied that the objectives of Condition 5 and the visual inspection requirements of Condition 6 will be met. (3) In furtherance of, but without limiting the generality of, the obligation imposed by Subsection (1), the Owner shall ensure that equipment and material for the containment, clean-up and disposal of oil and materials contaminated with oil are kept on hand and in good repair at a nearby manned facility operated by the Owner for immediate use at any unmanned site in the event of: (a) a spill within the meaning of Part X of the Environmental Protection Act, or (b) the identification of an abnormal amount of oil in the Works. (4) Redirection of water collected in site excavations to the Works is permitted in accordance with Schedule B. Redirection of water collected from hyrdotests to the Works is permitted in accordance with Schedule C. Water collected in site excavations and from hydrotests that are deemed not acceptable for redirection to the Works shall be treated and/or disposed of in accordance with applicable legislation. (5) Other activities such as alterations, removal and addition of berms, swales, ditches and culverts are permitted as long as it does not impact total volumes/quality of water collected from the approved drainage areas currently established for each of the site, it does not constitute a risk for the

5 environment, and the total catchment area is not changed. (6) Water that has been treated on a site by a licensed contractor who holds an Environmental Compliance Approval for a mobile sewage works for the treatment of contaminated water, can be discharged to the Works provided the treated water quality meets effluent objectives specified in Condition 6 of this Approval. 4. OPERATIONS MANUAL (1) The Owner shall prepare an operations manual, within three (3) months of the issue date of this Certificate, that includes, but is not necessarily limited to, the following information: (a) operating procedures for routine operation of the Works, (b) inspection programs, including frequency of inspection, for the Works and the methods or tests employed to detect when maintenance is necessary, (c) repair and maintenance programs, including the frequency of repair and maintenance for the Works, (d) a spill prevention, control and countermeasures plan including procedures for notifying the District Manager, (e) procedures for managing environmental concerns from the public. (2) The Owner shall maintain the operations manual current and shall retain a copy at the nearest manned station or location of the Works. Upon request, the Owner shall make the manual available for inspection by Ministry staff. 5. EFFLUENT OBJECTIVES (1) The Owner shall use best efforts to design, construct and operate the Works with the objective that the concentrations shown for the effluent parameters in the table below are not exceeded in the effluent from Works: Table 1 - Effluent Objectives Effluent Parameters Concentration Objective (milligrams per litre) Total Suspended Solids (TSS) 50 Oil and Grease 15 (2) As a further effluent objective, the Owner shall use best efforts to maintain the ph of the effluent from the Works within the range of 6.5 to 9.0, inclusive, at all times. 6. EFFLUENT - VISUAL OBSERVATIONS Notwithstanding any other condition in this Approval, the Owner shall ensure that the effluent from the Works is essentially free of floating and settleable solids and does not contain oil or any other substance in amounts sufficient to create a visible film, sheen, foam or discolouration on the receiving waters. 7. SAMPLES AND MEASUREMENTS

6 The Owner shall ensure that all samples and measurements taken for the purposes of this Approval are taken at a time and in a location characteristic of the quality and quantity of the effluent stream over the time period being monitored. 8. EFFLUENT MONITORING AND RECORDING The Owner shall, upon commencement of operation of the sewage works, carry out the following monitoring program: (1) Samples shall be collected at the following sampling points, at the frequency specified, by means of the specified sample type and analyzed for each parameter listed and all results recorded: Table 2 - Effluent Monitoring - Site Discharge Points Effluent Parameters Monitoring Frequency Sample Type Total Suspended Solids Quarterly Grab (TSS) Oil and Grease Quarterly Grab ph Quarterly Grab (2) The methods and protocols for sampling, analysis and recording shall conform, in order of precedence, to the methods and protocols specified in the following: (a) the Ministry's publication, "Protocol for the Sampling and Analysis of Industrial/Municipal Wastewater", January 1999, as amended from time to time by more recently published editions, and (b) the publication, "Standard Methods for the Examination of Water and Wastewater", 21st edition, 2005, as amended from time to time by more recently published editions. (3) After twenty-four (24) months of monitoring in accordance with the requirements of Subsection (1), the District Manager may modify the monitoring frequencies and the monitored parameters in writing, from time to time. (4) The Owner shall retain for a minimum of five (5) years from the date of their creation, all records and information related to, or resulting from, the monitoring activities required by this Approval. 9. REPORTING (1) The Owner shall report to the District Manager or designate, any exceedance of the effluent objectives specified in Condition 5 orally, as soon as reasonably possible, and in writing within seven (7) days of the first reporting of the exceedance. (2) In addition to the obligations under Part X of the Environmental Protection Act, the Owner shall, within 10 working days of the occurrence of any reportable spill as defined on Ontario Regulation 675/98, bypass or loss of any product, by-product, intermediate product, oil, solvent, waste material or any other polluting substance into the environment, from the herein approved works, submit a full written report of the occurrence to the District Manager describing the cause and discovery of the spill or loss, clean-up and recovery measures taken, preventive measures to be taken and the schedule of their implementation.

7 (3) The Owner shall prepare and submit an annual report to the District Manager within sixty (60) days following the end of each calendar year. The reports shall contain, but shall not be limited to, the following information: (a) a summary of the Discharge Events and interpretation of all monitoring data with a comparison to the effluent objectives outlined in Condition 5, (b) a description of any operating problems encountered and corrective actions taken, (c) a summary of all maintenance carried out on any major structure, equipment, apparatus, or mechanism forming part of the sewage works, (d) a summary of any effluent quality assurance or control measures undertaken in the reporting period, (e) a summary of the other activities permitted under Schedule B, C and D, (f) a summary of any calibration and maintenance carried out on all effluent monitoring equipment. (4) The reporting requirements specified in Subsection (3), may be modified or removed by the District Manager in writing, from time to time, after the first reporting year, provided that the information to be reported under Subsection (3), is instead, recorded and maintained in a logbook, or equivalent, at the location of the sewage works. The reasons for the imposition of these terms and conditions are as follows: 1. Condition 1 is imposed to ensure that the Works are built and operated in the manner in which they were described for review and upon which approval was granted. This condition is also included to emphasize the precedence of Conditions in the Approval and the practice that the Approval is based on the most current document, if several conflicting documents are submitted for review. 2. Condition 2 is included to ensure that the Ministry records are kept accurate and current with respect to the approved works and to ensure that subsequent owners of the Works are made aware of the Approval and continue to operate the Works in compliance with it. 3. Condition 3 is included to ensure that the Works will be operated and maintained in a manner enabling compliance with the terms and conditions of this Approval, such that the environment is protected and deterioration, loss, injury or damage to any person or property is minimized and/or prevented. 4. Condition 4 is included to ensure that a comprehensive operations manual governing all significant areas of operation, maintenance and repair is prepared, implemented and kept current by the Owner. Such a manual is an integral part of the operation of the Works. Its compilation and use should assist the Owner in staff training, in proper plant operation and in identifying and planning for contingencies during possible abnormal conditions. The manual will also act as a bench-mark for Ministry staff when reviewing the Owner's operation of the works. 5. Conditions 5 and 6 are imposed to establish non-enforceable effluent quality objectives which the Owner is obligated to use best efforts to strive towards on an ongoing basis. These objectives are to be used as a mechanism to trigger corrective action proactively and voluntarily before environmental impairment occurs. 6. Conditions 7 and 8 are included to require the Owner to demonstrate on a continual basis that the quality and quantity of the effluent from the approved works is consistent with the design objectives specified in the Approval and that the approved works are not causing any impairment to the receiving watercourse.

8 7. Condition 9 is included to provide a performance record for future reference and to ensure that the Ministry is made aware of problems as they arise, so that the Ministry can work with the Owner in resolving the problems in a timely manner. Schedule A 1. Environmental Compliance Approval Application for Sewage Works submitted by Jim Perrone of Stantec Consulting Ltd., received on January 31, 2013, including Industrial Sewage ECA Technical Report Enbridge Westover Station. Schedule B The following sampling plan will be implemented to confirm the acceptability of water in excavations for redirection to the Works. Visual and Olfactory Screening (1) The owner shall conduct a visual inspection of the water collected in an excavation to ensure that it is essentially free of floating and settleable solids and does not contain any oil or any other substance in amounts sufficient to create a visible film, sheen, foam or discolouration on the Works. Collected water may then be left in situ or transferred to temporary holding tanks Water Sampling and Discharge Criteria (2) Water samples shall be collected directly from the excavations or from temporary holding tanks and analysed for the parameters listed in Table 3. (3) If the sample results from (2) indicate no exceedances of the Table 3 objectives for all parameters, then the water collected in the excavations or transferred to temporary holding tanks will be considered acceptable for redirection to the Works for a period of thirty (30) days from the date the sample in (2) was collected. Should further or on-going redirection of water from any excavation or temporary holding tank be required beyond thirty (30) days from the date of the collection of the sample in (2), an additional sample will be collected from the excavation or temporary holding tank and analysed for the parameters listed in Table 3, every 30 days from the date of the last sample until no further redirection of water from the excavation is required. If the sample results from any of the additional samples indicate no exceedances of the Table 3 objectives for all parameters, then the water collected in the excavations or transferred to temporary holding tanks may be redirected to the Works. Prior to redirection of water to the Works, all water will be passed through a dewatering filter bag which is designed to filter silt, sand, fine debris from the discharged water. The filter bags will be specified to filter to a mm particle size (or similar). Table 3 - Excavation Water and Hyrdotests Water Objectives Parameters Concentration Objective Total Suspended Solids 50 mg/l Oil and Grease 15 mg/l Benzene, Ethylbenzene, Total Provincial Water Quality Objectives Xylenes Toluene 10 ug/l ph Schedule C The following sampling plan will be implemented to confirm the acceptability of water used in

9 hydrotests for redirection to the Works. Visual and Olfactory Screening (1) Collected water from a hydrotest will then be transferred into temporary holding tanks. The owner shall then conduct a visual inspection of the water placed into holding tanks to ensure that it is essentially free of floating and settleable solids and does not contain any oil or any other substance in amounts sufficient to create a visible film, sheen, foam or discolouration on the Works. Water Sampling and Discharge Criteria (2) Water samples shall be collected from the temporary holding tanks and analysed for the parameters listed in Table 3. (3) If the sample results from (2) indicate no exceedances of the Table 3 objectives for all parameters, then the water collected from hydrotests and transferred to temporary holding tanks will be considered acceptable for redirection to the Works. In accordance with Section 139 of the Environmental Protection Act, you may by written Notice served upon me, the Environmental Review Tribunal and in accordance with Section 47 of the Environmental Bill of Rights, 1993, S.O. 1993, c. 28 (Environmental Bill of Rights), the Environmental Commissioner, within 15 days after receipt of this Notice, require a hearing by the Tribunal. The Environmental Commissioner will place notice of your appeal on the Environmental Registry. Section 142 of the Environmental Protection Act provides that the Notice requiring the hearing shall state: 1. The portions of the environmental compliance approval or each term or condition in the environmental compliance approval in respect of which the hearing is required, and; 2. The grounds on which you intend to rely at the hearing in relation to each portion appealed. The Notice should also include: 3. The name of the appellant; 4. The address of the appellant; 5. The environmental compliance approval number; 6. The date of the environmental compliance approval; 7. The name of the Director, and; 8. The municipality or municipalities within which the project is to be engaged in. And the Notice should be signed and dated by the appellant. This Notice must be served upon: The Secretary* Environmental Review Tribunal 655 Bay Street, Suite 1500 Toronto, Ontario AND The Environmental Commissioner 1075 Bay Street, Suite 605 Toronto, Ontario M5S 2B1 The Director appointed for the purposes of Part II.1 of the Environmental Protection Act AND Ministry of the Environment and Climate Change 135 St. Clair Avenue West, 1st

10 M5G 1E5 Floor Toronto, Ontario M4V 1P5 * Further information on the Environmental Review Tribunal s requirements for an appeal can be obtained directly from the Tribunal at: Tel: (416) , Fax: (416) or This instrument is subject to Section 38 of the Environmental Bill of Rights, 1993, that allows residents of Ontario to seek leave to appeal the decision on this instrument. Residents of Ontario may seek leave to appeal within 15 days from the date this decision is placed on the Environmental Registry. By accessing the Environmental Registry at you can determine when the leave to appeal period ends. The above noted activity is approved under s.20.3 of Part II.1 of the Environmental Protection Act. DATED AT TORONTO this 20th day of May, 2016 FL/ c: District Manager, MOECC Hamilton - District Jim Perrone, Stantec Consulting Ltd. Fariha Pannu, P.Eng. Director appointed for the purposes of Part II.1 of the Environmental Protection Act