The enclosed report documents findings of the inspection that was performed at the Carleton Place sewage works on March 22, 2017.

Transcription

1 Ministry of the Environment and Climate Change Safe Drinking Water Branch Ottawa District Office 2430 Don Reid Drive Ottawa ON K1H 1E1 Ministère de l Environnement et de l Action en matière de changement climatique Direction du contrôle de la qualité de l eau potable Bureau du district d Ottawa 2430, chemin Don Reid Ottawa (Ontario) K1H 1E1 May 12, 2017 Sent by dyoung@carletonplace.ca The Corporation of the Town of Carleton Place 175 Bridge Street Carleton Place, Ontario K7C 2V8 Attention: Mr. Dave Young, Director of Public Works Dear Mr. Young: Re: Inspection Report The enclosed report documents findings of the inspection that was performed at the Carleton Place sewage works on March 22, Two sections of the report, namely Actions Required and Recommended Actions cite due dates for the submission of information or plans to my attention. Please note that Actions Required are linked to incidents of non-compliance with regulatory requirements contained within an Act, a Regulation, or site-specific approvals, orders or instructions. Such violations could result in the issuance of mandatory abatement instruments including orders, tickets, penalties, or referrals to the ministry s Investigations and Enforcement Branch. Recommended Actions convey information that the owner or operating authority should consider implementing in order to advance efforts already in place to address such issues as emergency preparedness and conformance with existing and emerging industry standards. Please note that items which appear as recommended actions do not, in themselves, constitute violations. Thank you for the assistance afforded to me during the conduct of the compliance assessment. Should you have any questions regarding the content of the enclosed report, please do not hesitate to contact me. Yours truly, Page 1 of 2

2 Jen Bitten, B.Sc. Water Inspector, Badge #1609 Ministry of the Environment & Climate Change Safe Drinking Water Branch 2430 Don Reid Drive Ottawa, ON K1H 1E1 Tel: ext. 255 or Fax: JB Enclosure ec: Paul Knowles, Chief Administrative Officer, Town of Carleton Place, 175 Bridge Street, Carleton Place, ON K7C 2V8, - Graham Patterson, Public Works Superintendent, Town of Carleton Place, 175 Bridge Street, Carleton Place, ON K7C 2V8, - Vanessa Greatrix, Safety, Process & Compliance Manager, Ontario Clean Water Agency (OCWA), Ottawa Valley Hub, 88 Anderson Lane, Bancroft, ON K7C 4P3, - Alison O Connor, Process & Compliance Technician, Ontario Clean Water Agency (OCWA), Mississippi Cluster, 122 Patterson Crescent, Carleton Place, ON K7C 4P3, ao connor@ocwa.com - Robert Leblanc, Operations Manager, Ontario Clean Water Agency (OCWA), Ottawa Valley Hub, 122 Patterson Crescent, Carleton Place, ON K7C 4P3, rleblanc@ocwa.com - Jane Lyster, Director, Health Protection, Leeds, Grenville and Lanark District Health Unit, 458 Laurier Boulevard, Brockville, ON K6V 7A3, jane.lyster@healthunit.org - Joan Mays, Manager of Community Health Protection, Leeds, Grenville and Lanark District Health Unit, 458 Laurier Boulevard, Brockville, ON K6V 7A3, joan.mays@healthunit.org - Paul Lehman, General Manager, Mississippi Valley Conservation Authority, Highway 7, Carleton Place, ON K7C 3P1, plehman@mvc.on.ca c: File SI-LA-CA-PA 441 (2016) Page 2 of 2

3 Ministry of the Environment and Climate Change WW CARLETON PLACE WPCP Inspection Report Site Number: Inspection Number: 1-CLRG1 Date of Inspection: Mar 22, 2017 Inspected By: Jen Bitten

4 Table of Contents: OWNER INFORMATION. 2 CONTACT INFORMATION. 2 INSPECTION DETAILS 2 DRINKING WATER SYSTEM COMPONENTS DESCRIPTION...2 INSPECTION SUMMARY 7 Introduction 7 Authorizing and Control Documents...7 Capacity Assessment.. 7 Treatment Processes...8 Effluent Quality & Quantity. 9 Monitoring Requirements...11 Reporting Requirements.12 Bypasses and Overflows Biosolids Management 13 Certification and Training...14 Logbooks 15 Operations Manuals. 15 Contingency/Emergency Planning.. 15 Other Inspection Findings..15 NON-COMPLIANCE WITH REGULATORY REQUIREMENTS & ACTIONS REQUIRED..16 SUMMARY OF BEST PRACTICE ISSUES & RECOMMENDATIONS SIGNATURES...18 APPENDIX A STAKEHOLDER APPENDIX APPENDIX B AUDIT SAMPLE RESULTS APPENDIX C ENVIRONMENTAL COMPLIANCE APPROVAL(S)

5 Ministry of the Environment and Climate Change Inspection Report OWNER INFORMATION: Company Name: CARLETON PLACE, TOWN OF Street Number: 175 Unit Identifier: Street Name: BRIDGE St City: CARLETON PLACE Province: ON Postal Code: K7C 2V8 CONTACT INFORMATION Type: Owner Name: Dave Young Phone: (613) Fax: (613) Title: Director of Public Works, The Corporation of the Town of Carleton Place Type: Operating Authority Name: Vanessa Greatrix Phone: (613) Fax: (613) Title: Safety, Process and Compliance Manager, Ontario Clean Water Agency, Eastern Regional Hub Type: Operating Authority Name: Robert Leblanc Phone: (613) Fax: (613) Title: Operations Manager, Ontario Clean Water Agency Type: Operating Authority Name: Alison O'Connor Phone: (613) Fax: (613) Title: Process & Compliance Technician, Ontario Clean Water Agency, Mississippi Cluster INSPECTION DETAILS: Site Name: WW CARLETON PLACE WPCP Site Address: 122 PATTERSON Crescent CARLETON PLACE ON K7C 4P3 County/District: CARLETON PLACE MOECC District/Area Office: Ottawa District Health Unit: LEEDS, GRENVILLE AND LANARK DISTRICT HEALTH UNIT Conservation Authority: MNR Office: Site Number: Inspection Type: Announced Inspection Number: 1-CLRG1 Date of Inspection: Mar 22, 2017 Date of Previous Inspection: Mar 11, 2014 COMPONENTS DESCRIPTION Site (Name): Wastewater Collection System Type: Sewage Collection System Sub Type: Class II Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 2 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

6 Ministry of the Environment and Climate Change Inspection Report Comments: The Carleton Place Wastewater Collection System is classified as a Class 2 Wastewater Collection System, certificate #711. The collection system consists of a network of sewers and nine sewage pumping stations, all of which are equipped with high level alarms and seven of which are equipped with back up power. The Town has approximately 53km of wastewater collection piping, which ranges in size from 200mm to 750mm in diameter. Only the Westview Pumping Station is equipped to overflow from its wet well. The overflow is preceded by a high flow alarm. This gives the operator enough time to implement an overflow procedure. Sewage that does overflow enters a contained forebay to a stormwater retention area connected to municipal drains and ditches which eventually discharge, approximately 2km further, into the Mississippi River. A sewage overflow event from this pumping station has never taken place. The Town provides for the overall operation of the collection system and is responsible for ensuring the sewage works are constructed and operated to protect the environment and meet the treatment requirements outlined in all applicable legislation and authorizing documentation. An inspection and cleaning program has been established for the Town's sewers (storm and sanitary). The Town cleans 1/4 of the Town's sewers each year. The Public Works Superintendent maintains a manhole cleaning schedule and sewer cleaning map. Site (Name): Carleton Place Wastewater Collection System Type: Sewage Collection System Sub Type: Nominally Separated Sewers Comments: The Town of Carleton Place has separated sewers, but sanitary sewers are susceptible to infiltration and extraneous flows (e.g. roof leaders, sump pumps and cross connections) during wet weather. The Town has made efforts, such as the development of an infiltration program, which includes targets set each year to address infiltration on an ongoing basis. Site (Name): Sewage Pumping Stations Type: Collection System Component Sub Type: Pumping station Comments: The collection system consists of ten (10) sewage pumping stations, all of which are equipped with high level alarms and seven (7) of which are equipped with back up power. The sewage pumping stations are listed as: Carlgate Pumping Station; Princess Street Pumping Station; Industrial Street Pumping Station; Findlay Street Pumping Station; Westview Street Pumping Station; Bridge Street Pumping Station; Mississippi Quay Pumping Station; Joseph Street Pumping Station; Charles Street Pumping Station; and High Gate Pumping Station. It was reported that only the Westview Pumping Station is equipped to overflow from its wet well. Site (Name): Pumping Stations Type: Stand-by Power Generation Sub Type: Pumping Station Generator(s) Comments: It was reported that seven (7) of the ten (10) sewage pumping stations are equipped with back up power. Site (Name): Carleton Place WPCP Type: Plant Classification Sub Type: Class III Comments: The Carleton Place Water Pollution Control Plant (WPCP) is classified as a Class 3 Wastewater Treatment System, Certificate Number 703, issued on January 1, Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 3 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

7 Ministry of the Environment and Climate Change Inspection Report Site (Name): Type: Water Pollution Control Plant Mechanical Sewage Treatment System Sub Type: Secondary Treatment Comments: The Carleton Place Water Pollution Control Plant (WPCP) is a conventional activated sludge plant with anaerobic digestion. The Carleton Place WPCP consists of preliminary and primary treatment followed by a nitrifying aerated activated sludge process and anaerobic sludge digestion. Coagulant (PAS-8) and polymers are used for phosphorus removal. An alkalinity dosing system using sodium hydroxide promotes nitrification throughout the aerated phase of sewage treatment. It was reported that lime is not used, although it is included in the ECA. Effluent is then UV disinfected prior to discharge to the Mississippi River. Three physical/chemical (Phys/Chem) clarifiers are available and can be brought online during periods of heavy wet weather where flows exceed 10,400m³/day; when in use, excess flows by-pass the activated sludge process and receive only primary treatment before effluent is combined with secondary treated effluent (normal treatment through the entire WPCP process) and discharged as combined effluent following UV disinfection. Sludge at the WPCP is co-thickened and stabilized in a two stage digestion process. Septage (hauled sewage consisting of portable toilet waste) is also received at the plant and passed through the entire treatment process. The WPCP has a rated capacity of 7,900m³/day, with an approved peak flow rate of 22,000m³/day during wet weather events. ECA No FZT4A was issued on October 3, 2008, for upgrades to the existing WPCP, including the addition of sludge dewatering facilities, an odour control facility and modifications to an alkalinity addition system. Notices No 1 and 2 have been issued for the replacement of natural and digester gas boilers and flare and the replacement of one blower in an aeration tank in the activated sludge plant, respectively. The upgrades to the existing WPCP also consisted of: the installation of a Centrate Equalization Tank located below the garage bay of the Sludge Management Facility, with the centrate return line to the headworks of the WPCP and an overflow line also leading to the headworks via the main sewer; installation of a Septage Receiving Tank located below the garage bay of the Sludge Management Facility; installation of an odour control facility to treat odourous air from the existing headworks and the dewatering and septage receiving facilities; installation of an alkalinity addition system with a sodium hydroxide solution feed system to provide supplemental alkalinity to the raw sewage; increase corner benching for the secondary clarifiers; and installation of a glycol recirculation pump at the boiler room to transfer heat to the building addition (Sludge Management Facility). The existing works consist of a control building including headworks, generator room, boiler room, compressor room, laboratory, control room and offices. The headworks consist of one automatic mechanical bar screen; two forced vortex degritters; and three sewage lift pumps. The upgraded boiler room consists of three dual fueled (digester gas and natural gas) gas boilers and one waste gas burner; and the upgraded compressor room consists of four positive displacement blowers (upgrades included the removal of one 20HP positive displacement blower and installation of one new 50HP Turbo blower to be used as duty blower, with existing three 20HP positive displacement blowers as standby blowers). A primary treatment system consisting of two main primary clarifiers; and three physical/chemical clarifiers that are brought on line during wet weather conditions (i.e. for raw sewage flow rates of greater than 10,400m³/d). The Activated Sludge Plant consists of a secondary treatment system for biologically treating process effluent from the two main primary clarifiers, including three aeration tanks equipped with a jet mixing system and three final clarifiers, complete with rapid sludge collecting and removal systems. The Chemical Building consists of a building that houses sludge pumping systems in the basement and chemical feed systems on the main floor, including sludge pumping systems (two waste activated sludge (WAS) pumps, three return activated sludge (RAS) pumps, two primary sludge recirculation pumps, and two biosolids transfer pumps); Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 4 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

8 Ministry of the Environment and Climate Change Inspection Report chemical feed systems for addition of chemicals to various possible application points, including upstream of the primary clarifiers, upstream of the aeration tanks, and primarily to the outlet channel of the aeration tanks. Site (Name): Carleton Place WPCP Type: Effluent Discharge Frequency Sub Type: Continuous Comments: Effluent from the works is gravity discharged from the UV disinfection unit through an underground pipe to the Mississippi River. Effluent is discharged continuously. Site (Name): Carleton Place WPCP Type: Method of Disinfection Sub Type: Ultraviolet Comments: The Effluent Disinfection System consists of an ultraviolet (UV) irradiation system (Trojan) consisting of two blanks of UV lamps in series complete with UV detection system. Site (Name): Carleton Place WPCP Type: Biosolids Stabilization Process Sub Type: Anaerobic Digestion Comments: The expansion and upgrading of the existing Control Building at the WPCP consisted of the construction of a building addition (Sludge Management Facility) comprising four rooms, including one room to accommodate a new sludge dewatering process, one room to accommodate a future thickening process (subject to future approval), one room for new odour control equipment, and the remaining room for use as truck bay and storage area. Site (Name): Carleton Place WPCP Type: Biosolids Storage Method Sub Type: On-Site Storage Capacity Comments: The Sludge Digesters consist of an anaerobic digestion system including one primary digester; one secondary digester; one biosolids storage tank; and one heat exchanger boiler. The sludge (biosolids) storage holding tank at the Carleton Place WPCP has a capacity of 1,900m³ and a retention time of 6 months. Site (Name): Carleton Place WPCP Type: Type of Biosolids Sub Type: Liquid Comments: Anaerobic liquid biosolids are produced and stored onsite. Site (Name): Carleton Place WPCP Type: Type of Biosolids Sub Type: Dewatered Comments: The modifications to the existing WPCP included the installation of a new dewatering centrifuge process in the Sludge Management Facility, consisting of one new decanter centrifuge located in the Centrifuge Room of the Sludge Management Facility, intended and approved to process liquid biosolids from the on-site anaerobic digestion system or occasionally raw primary sludge generated at the WPCP; installation of sludge transfer equipment to pump biosolids from the Biosolids Storage Tank or secondary digester to the dewatering centrifuge; and installation of a new polymer system in the Centrifuge Room of the Sludge Management Facility to supply polymer to the dewatering process. Site (Name): Carleton Place WPCP Type: Biosolids Disposal Method Sub Type: Land application Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 5 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

9 Ministry of the Environment and Climate Change Inspection Report Comments: The Carleton WPCP produces anaerobic digested sludge which is applied to agricultural lands under an approved Organic Soil Conditioning Sites. The biosolids program is contracted out to Terratec Environmental. Site (Name): Carleton Place WPCP Type: Biosolids Disposal Method Sub Type: Landfill Comments: The dewatering centrifuge process allows the plant to de-water the biosolids and dispose of at the landfill. This is the contingency plan if biosolids cannot be land applied. The centrifuge has not been used since Site (Name): Carleton Place WPCP Type: Stand-by Power Generation Sub Type: STP Generator Comments: The Carleton Place WPCP is equipped with one (1) diesel generator set (200kW) including fuel system and exhaust system. It was reported that GALPower inspects the generator set annually; and that operators run the generator set under load once a month. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 6 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

10 Ministry of the Environment and Climate Change Inspection Report INSPECTION SUMMARY: Introduction The primary focus of this inspection is to confirm compliance with Ministry of the Environment and Climate Change (MOECC) legislation as well as evaluating conformance with ministry policies and guidelines during the inspection period. This wastewater treatment and collection system is subject to the legislative requirements of the Ontario Water Resources Act (OWRA) and the Environmental Protection Act (EPA) and regulations made therein. This inspection has been conducted pursuant to Section 15 of the OWRA and Section 156 of the EPA. This inspection report does not suggest that all applicable legislation and regulations were evaluated. It remains the responsibility of the owner to ensure compliance with all applicable legislative and regulatory requirements. The Carleton Place Wastewater Treatment Plant (WWTP) is owned by the Town of Carleton Place. The treatment plant and pump stations are operated by the Ontario Clean Water Agency (OCWA) and the Town operates the collection system. An inspection was conducted on March 22, 2017 and was attended by Ministry of the Environment and Climate Change (MOECC) Water Inspector Jen Bitten and OCWA staff. A separate meeting with Town staff occurred on March 23, The site was last inspected on March 11, 2014 and this inspection period includes from March 11, March 22, An audit sample was taken as part of the inspection with results included in the Appendices. Authorizing/Control Documents The owner had a valid Environmental Compliance Approval for the sewage works. Carleton Place WWTP is approved under Environmental Compliance Approval #5001-7FZT4A, issued on October 3, Notice Number 1 was issued on August 31, 2009 and Notice Number 2 was issued on July 27, 2010 and these also form part of the approval for the system. Copies of the ECAs is included in the Appendices. Please note that Certificates of Approval are now referred to as Environmental Compliance Approvals (ECA) and ECA will be used throughout this report to refer to the facility's current approval. Capacity Assessment The annual average daily flow was not approaching the rated capacity of the sewage works. The ECA states a rated capacity of 7900m³/day as an average daily flow and 22000m³/day. In 2014 the average daily flow was 6102m³/day (77% of rated capacity) with a maximum flow of 26556m³/day. In 2015 the average daily flow was 4713m³/day (60% of rated capacity) with a maximum flow of 10994m³/day. In 2016 the average daily flow was 5319m³/day (67% of rated capacity) with a maximum flow of 15955m³/day. The owner was in conformance with the designed rated capacity for average daily flow into the sewage works. As noted above, the annual average daily flows are well within the rated capacity for the plant. The plant is also equipped with three (3) physical/chemical (Phys/Chem) clarifiers which can be brought into service for wet weather raw sewage flows greater than 10400m³/day with a maximum design flow rate of 11600m³/day for all three (3) Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 7 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

11 Ministry of the Environment and Climate Change Inspection Report Capacity Assessment clarifiers. The Phys/Chem tanks are usually brought online prior to the spring snow melting season in order to establish the biological process in time for the wet weather flows, effluent is not discharged from the tanks during this time. This allows the main plant to continue operating within the rated capacity and full treatment to those flows still occurs. The effluent from the Phys/Chem tanks is combined with the regular effluent from the plant and discharged to the river. In 2014 the maximum daily flow exceeded the peak flow rate of 22000m³/day with daily flows of 26556m³ and 22361m³ during the spring melt in early April. During this high flow period, the Phys/Chem tanks were brought into service for the wet weather conditions with approximately m³ diverted over 13 days. This was reported and sampled as required. The Phys/Chem tanks were not used in 2015 or 2016 but have been put into service since the date of this inspection for the 2017 wet weather flows. At the time of inspection, one (1) of the Phys/Chem tanks had been filled in preparation for the wet weather flows for the spring. The owner of the sewage works had not prepared a written statement certified by a Professional Engineer confirming that the proposed works were constructed in accordance with the Environmental Compliance Approval. The statement of substantial completion, certified by a Professional Engineer, is required under Condition 4 of the ECA as well as for the works described in each Notice issued under the ECA. The statements have not been completed since the last inspection. The works in the ECA were partially completed by different engineering groups and the equipment has been operational for some time now as the ECA was issued in The works in each of the Notices, dated 2009 and 2010, were also completed by different engineering groups and the equipment has been installed and is operational. The Town should work with the appropriate engineering groups to ensure that the statements are prepared and are available. Flow measuring devices were installed, calibrated and maintained in accordance with the requirements of the Environmental Compliance Approval. Raw sewage flows are measured entering the plant. The plant is also equipped with numerous process flow meters and level monitors. Records were provided of the annual verification for the meters and level monitors. Flow rates were recorded at a frequency prescribed by the Environmental Compliance Approval. Flow is recorded for each day, covering the 24-hour period. Treatment Processes All monitoring equipment other than flow monitoring devices were installed, calibrated and maintained in accordance with any Environmental Compliance Approval. The plant has process control analyzers at various stages in the treatment for ph, dissolved oxygen, nitrate and ammonia. The owner had ensured that all equipment was installed in accordance with the Environmental Compliance Approval. The equipment is installed and operational as required. It is noted that lime is not used in the process as it has not been required. The works, related equipment and appurtenances were being operated and maintained to achieve compliance prescribed by the Environmental Compliance Approval. OCWA uses a Work Management System for tracking and scheduling preventative and corrective maintenance on the equipment. Standard Operating Procedures (SOP) have been developed for the operation and maintenance of Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 8 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

12 Ministry of the Environment and Climate Change Inspection Report Treatment Processes the plant. The operator-in-charge had ensured that all equipment used in the processes was monitored, maintained, inspected, tested and evaluated. The Operator In Charge (OIC) is noted in the logbook for each working day. A site visit in conducted complete with routine plant checks and review of data on a daily basis (weekdays). The owner/operating authority was able to demonstrate that best efforts were used to achieve the objectives listed in the Environmental Compliance Approval conditions. Operators visit the plant each weekday and monitor the process from raw sewage to final effluent. Some in-house process control is completed on a regular basis, allowing operators to adjust the process when necessary. The sewage works effluent was essentially free of foreign substances on the day of the inspection. Effluent Quality and Quantity The sewage works effluent limits were prescribed by the Environmental Compliance Approval. Effluent limits are specified in Condition 7 of the ECA. The sewage works effluent sample results demonstrated compliance with BOD5 or CBOD5 limits prescribed by the Environmental Compliance Approval. Effluent CBOD5 sampling is required on a monthly basis, with compliance based on the annual average for both concentration and loading. The CBOD5 concentration limit is 25.0mg/L and the loading limit is 550kg/day. These ECA limits were met during the inspection period with results as follows: The annual average CBOD5 concentration for 2014 was 2.3mg/L with an annual average loading of 17.6kg/day. The annual average CBOD5 concentration for 2015 was 2.4mg/L with an annual average loading of 10.9kg/day. The annual average CBOD5 concentration for 2016 was 3.6mg/L with an annual average loading of 19.3kg/day. The sewage works effluent sample results demonstrated compliance with total suspended solids limits prescribed by the Environmental Compliance Approval. Effluent Total Suspended Solids (TSS) sampling is required on a monthly basis, with compliance based on the annual average for both concentration and loading. The TSS concentration limit is 25.0mg/L and the loading limit is 550kg/day. These ECA limits were met during the inspection period with results as follows: The annual average TSS concentration for 2014 was 4.1mg/L with an annual average loading of 54.0kg/day. The annual average TSS concentration for 2015 was 22.6mg/L with an annual average loading of 109.2kg/day. The annual average TSS concentration for 2016 was 16.1mg/L with an annual average loading of 79.2kg/day. The sewage works effluent sample results demonstrated compliance with total phosphorous limits prescribed by the Environmental Compliance Approval. Effluent Total Phosphorus (TP) sampling is required on a weekly basis, with compliance based on the monthly average for both concentration and loading. The TP concentration limit is 1.0mg/L and the loading limit is 22.0kg/day. These ECA limits were met during the inspection period with results as follows: The monthly average TP concentration in 2014 ranged from 0.10mg/L mg/L. The monthly average loadings ranged from 0.50kg/day kg/day. The monthly average TP concentration in 2015 ranged from 0.14mg/L mg/L. The monthly average loadings ranged from 0.64kg/day - 2.3kg/day. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 9 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

13 Ministry of the Environment and Climate Change Inspection Report Effluent Quality and Quantity The monthly average TP concentration in 2016 ranged from 0.07mg/L mg/L. The monthly average loadings ranged from 0.29kg/day - 1.2kg/day. The sewage works effluent sample results demonstrated compliance with total ammonia/total ammonia nitrogen/unionized ammonia limits prescribed by the Environmental Compliance Approval. Effluent Total Ammonia Nitrogen (TAN) sampling is required on a weekly basis, with compliance based on the monthly average for both concentration and loading. The TAN concentration limit is 4.0mg/L and the loading limit is 88.0kg/day, only applicable during the period of May 15 to September 30 each year. These ECA limits were met during the inspection period with results as follows: The monthly average TAN concentration in 2014 ranged from 0.190mg/L mg/L. The monthly average loadings ranged from 1.13kg/day kg/day. The monthly average TAN concentration in 2015 ranged from 0.02mg/L mg/L. The monthly average loadings ranged from 0.105kg/day kg/day. The monthly average TAN concentration in 2016 ranged from <0.03mg/L mg/L. The monthly average loadings ranged from 0.098kg/day kg/day. The sewage works effluent sample results did not demonstrate compliance with additional limits prescribed by Environmental Compliance Approval. Condition 7 of the ECA also requires the effluent ph to be maintained between at all times, taking a weekly grab sample. In 2014, the effluent ph ranged from In 2015, the effluent ph ranged from In 2016, the effluent ph ranged from with the low reading occurring on October 19, It was noted that the online ph analyzer did not drop below 6.0 and the reported 5.82 was based on a single grab sample. The sewage works effluent sample results did not meet the effluent objectives stated in the Environmental Compliance Approval. Effluent objectives are specified in Condition 6 of the ECA with the same compliance requirements for each parameter as the effluent limits (ie. monthly or annual averages). The effluent objective for ph is inclusive, at all times. This was met at all times with the exception of the reported ph of Dry weather effluent objectives: CBOD5-15.0mg/L, 156kg/day TSS mg/L, 156kg/day TP mg/L, 7.8kg/day TAN - 2.0mg/L, 20.8kg/day - from May 15 to September 30 E.coli organisms/100ml The TSS annual average objective was exceeded in 2015 at 22.6mg/L and was caused by a single high TSS result which was taken just after maintenance. The same situation happened in 2016 with an annual average of 16.1mg/L with a single result in August bringing the average higher than usual. The TAN monthly average objective was exceeded in May 2016 at 2.2mg/L, just over the objective of 2.0mg/L. The loading did not exceed the objective. E.coli concentration is not included as an effluent limit; however, the E.coli results are well within the effluent Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 10 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

14 Ministry of the Environment and Climate Change Inspection Report Effluent Quality and Quantity objectives over the entire inspection period. Wet weather effluent objectives, for the Physical/Chemical Treatment Process when flows are greater than 10400m³: CBOD5-28.0mg/L, 325kg/day TSS mg/L, 325kg/day TP - 1.1mg/L, 12.8kg/day Peak flow rate effluent objectives, for the blended effluent from the Phys/Chem process and secondary treatment from the plant, during periods of wet weather condition up to the peak flow rate of 22000m³/day: CBOD5-21.9mg/L, 481kg/day TSS mg/L, 481kg/day TP mg/L, 20.6kg/day The Phys/Chem clarifiers were brought into service in time for wet weather flows in April 2014 for a period of 13.4 days. The objectives listed above were met during the wet weather flows. The inspector collected audit samples during the inspection. A final effluent sample was taken for microbiological analysis, results are included in the Appendices. The results of audit samples collected by the Inspector met the effluent limits or operational guidelines. The E.coli result was 32cfu/100mL and the fecal streptococcus was <4cfu/100mL. This single result is well within the ECA effluent objective for E.coli of 200 organisms/100ml, which is based on a geometric mean density for the calendar month. Monitoring Requirements The sampling requirements were prescribed by the Environmental Compliance Approval. Sampling required are specified in Condition 9 of the ECA. Raw sewage composite sampling for BOD5, Chemical Oxygen Demand (COD), TSS, TP and Total Kjeldahl Nitrogen (TKN) is required on a monthly basis. Effluent composite sampling for CBOD5, TSS is required on a monthly basis. Effluent composite sampling for TP,, TAN, TKN, Nitrate and Nitrite is required on weekly basis. Effluent grab sampling for E.coli and ph is required on a weekly basis. An effluent grab sample for Fecal Streptococcus is required on a monthly basis. A monthly grab sample for septage monitoring is required, testing for BOD5, Total Solids (TS), TSS, TP and TKN. Centrate sampling for BOD5, COD, TSS, TP and TKN is required when the centrifuge is used. Daily grab samples are required when the Phys/Chem tank is used, sampling the combined effluent at the physical/chemical clarification stage when in use, testing for CBOD5, TSS and TP. All sewage works effluent sampling requirements prescribed by the Environmental Compliance Approval were met. The effluent samples were taken as required with one (1) minor exception - the December 2015 fecal streptococcus sample was not taken. It was reported and noted in the annual report and there is no limit or objective for this Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 11 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

15 Ministry of the Environment and Climate Change Inspection Report Monitoring Requirements parameter. All sewage works influent (raw sewage) sampling requirements prescribed by the Environmental Compliance Approval were met. All additional monitoring requirements prescribed by the Environmental Compliance Approval were met. The centrifuge has not been used since 2014 and centrate samples, taken from the Centrate Equalization Tank, have not been required. In 2014, samples were taken as required with a summary of the results included in the annual report. Septage is sampled monthly as required. Condition 10 of the ECA states that the monthly loading of septage does not exceed 4.54m³/day, this requirement has also been met. Physical/Chemical Tanks were put into service for 13 days in The tanks were not used in 2015 or Daily sampling of the Phys/Chem effluent is required when in service. The owner had maintained the monitoring records for the period prescribed by the Environmental Compliance Approval. All exceedances of any parameters were not reported in accordance with the Environmental Compliance Approval. Condition 12(3) of the ECA requires an oral report to the ministry as soon as reasonably possible and in writing within seven (7) days. The ph reading on October 19, 2016 was outside the ECA effluent limit of 6.0 with a reading of 5.82 but was not reported to the ministry until February 14, It is noted that the online ph analyzer remained within the ECA range and this was a single grab sample. Reporting Requirements The reporting requirements were prescribed by an Environmental Compliance Approval. Reporting requirements are specified in Condition 12 of the ECA. The annual performance reports met the submission and contents requirements of the Environmental Compliance Approval. The annual reports are completed as required each year. Improvements to the 2016 annual report were noted. All other reporting requirements prescribed by the Environmental Compliance Approval were met. The owner/operator maintained a logbook and/or records of all bypasses/overflows which occurred from any portion of the sewage works in accordance with the Environmental Compliance Approval. Bypasses and Overflows Bypasses/overflows had occurred at the sewage works during the inspection period. On April 8, 2014, there were a total of three (3) raw sewage overflows related to equipment failure, in addition to the wet weather flows. The raw sewage pump failures resulted in a total of 14m³ of raw sewage being discharged to the Mississippi River with chlorination. These events occurred under high flow, wet weather conditions in conjunction with the peak flow exceedance noted earlier in this report. The use of the Phys/Chem tank(s) is also considered a partial plant bypass situation; however, some treatment Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 12 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

16 Ministry of the Environment and Climate Change Inspection Report Bypasses and Overflows (sedimentation) is provided to those flows which recombines with the regular final effluent from the plant, prior to the disinfection process. As previously discussed in this report, the Phys/Chem tanks were used in 2014 for a total of 13.4 days with a total volume of m³. The Phys/Chem tanks were not used in 2015 or During the preparation of this report, the Phys/Chem tanks were put into service for the 2017 wet weather flows for April with a total volume of 47966m³ over a 3 day period being discharged from the Phys/Chem tanks. It is noted that the tanks are prepared in advance each season for the potential overflow situation. For all bypasses/overflows which occurred from the sewage treatment plant, samples were collected and analyzed in accordance with the Environmental Compliance Approval. Disinfection was provided in accordance with the Environmental Compliance Approval for all bypasses/overflows which occurred from any portion of the sewage works. Flows from the Phys/Chem tanks recombine with the normal effluent from the plant prior to disinfection and all flows are disinfected with the UV system. Notices and written reports of all bypasses/overflows were provided to the Ministry in accordance with the Environmental Compliance Approval. All required verbal notifications of spills were provided forthwith as per O. Reg. 675/98 section 13. A spill of biosolids occurred in May 2014 while preparing the biosolids hauling truck, contents from the hose spilled onto the driveway. The area was cleaned and the incident was reported as required. Also in May 2014, a digester gas release occurred for an unknown period of time and unknown volume. Corrective actions were taken immediately upon discovery. This incident was not included in the 2014 annual report. In April 2015, a planned spill of digester gas was requested in order to carry out essential maintenance on the primary digester. This was approved by the Water Compliance Supervisor through a letter, dated April 14, In October 2015, a planned spill of digester gas was requested in order to carry out essential maintenance on the primary digester. This was approved by the Water Compliance Supervisor through a letter, dated October 8, In May 2016, a small spill of biosolids occurred when the tank overflowed during filling. The area was cleaned up and the incident was reported as required by the haulers. Biosolids Management The owner was maintaining records of the amount of biosolids generated at the sewage works. The volume of biosolids is tracked and entered into PDM. Total annual volumes are included in the annual report with a comparison of the volume over the last seven (7) years. Records confirm that biosolids were transferred to a Ministry approved facility for disposal or utilization. Biosolids were land applied under approved Non-Agricultural Source Materials (NASM) Plans. Organic Soil Conditioning Site S was also used until it expired in December The locations of biosolids disposal is included in the annual reports. Records confirm that biosolids were transported for disposal or utilization by Ministry approved haulers. All biosolids are hauled by Terratec Environmental under Waste Management System ECA LBLXD. The owner of the facility had written contingency plans or other management methods in place to be used Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 13 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

17 Ministry of the Environment and Climate Change Inspection Report Biosolids Management in the event that the facility's sludge storage capacity was not sufficient. The centrifuge is now operational and can process biosolids into dewatered cake, which can then be taken to landfill. This method is only used if land application is not available. Operators manage the sludge production and storage in order to ensure there is appropriate storage over the winter months. The sewage biosolids intended for land application were sampled in accordance with regulatory requirements. The biosolids are sampled on a monthly basis. There was a process in place to ensure biosolids sample results are reviewed and interpreted by the Municipality. Testing for biosolids required by legislation was conducted by accredited laboratories. Certification and Training The classification certificates of the subsystems were conspicuously displayed at the workplace or at premises from which the subsystem was managed. Plant Certification - Class III Wastewater Treatment, Certificate #708 Collection System Certification - Class II Wastewater Collection, Certificate #711 Operator licences were displayed in a conspicuous location at the workplace or at the premises from which the subsystem was managed. The overall responsible operator had been designated for the wastewater treatment and collection works. OCWA provides a properly licensed operator as the Overall Responsible Operator (ORO) at all times for the treatment plant. The ORO is noted in the logbook each day. The Town provides a properly licensed operator as the ORO at all times for the collection system. The ORO is noted at the front of the logbook. If there are changes to the ORO, it is noted in the logbook. An adequately licensed operator was designated to act in place of the overall responsible operator when the overall responsible operator was unable to act. When the designated ORO is unable to act, an appropriately licensed operator must act in their absence. If there are no properly certified operators to act as ORO, a lower classified operator may act as ORO for a maximum period of 150 days within a twelve (12) month period. During periods of time when the designated Overall Responsible Operator (ORO) was unable to act, a lower classified operator (Class II Wastewater Treatment) was designated as the back-up ORO. The total time did not exceed 150 days. All operators had the appropriate level of licences for the wastewater treatment and collection works. Only licenced operators made adjustments to the treatment equipment. Operators-in-charge were designated for the wastewater treatment plant and all associated collection works. The operator-in-charge ensured that records were maintained of all adjustments made to the processes within his or her responsibility. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 14 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

18 Ministry of the Environment and Climate Change Inspection Report Certification and Training Logbooks The logs and other record keeping mechanisms complied with the record keeping requirements. Logs and other record keeping mechanisms were available for at least two (2) years. Operations Manuals The operations and maintenance manuals met the requirements of the Environmental Compliance Approval. The plant has a Standard Operating Procedure manual, the Facility Emergency Plan, operations manuals and supplier equipment manuals for equipment in the plant, both old and new. Critical operational and compliance information is posted at the plant for easy access to important information. Drawings for both the plant and the collection system are available to operators. Operators and maintenance personnel had ready access to operations and maintenance manuals. The operations and maintenance manuals contained up-to-date plans, drawings and process descriptions sufficient for the safe and efficient operation of the system. Contingency/Emergency Planning Spill containment was provided for the process chemicals and/or standby power generator fuel. The owner had provided security measures for the facility. Other Inspection Findings The owner had complied with all Orders or other control documents issued since the date of the previous inspection. Provincial Officer's Order 1-BOSLD was issued on October 14, 2014 for relief from strict compliance with approval requirements of Section 53 of the Ontario Water Resources Act (OWRA). This was specifically for a pilot project for the use of a biological product MAC WW25 to control foam, grease, oil and sludge in the sewage pumping stations for a period of twelve (12) months. The Order also allowed for an application for ECA amendment to be submitted to include the Limited Operational Flexibility (LOF) condition which would authorize such pilot projects in the future. An application was submitted to add the LOF condition; however, the application was returned and required more information. Future pilot projects or the use of the product MAC WW25 would require approval and/or the addition of the LOF condition to the ECA. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 15 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

19 Ministry of the Environment and Climate Change Inspection Report NON-COMPLIANCE WITH REGULATORY REQUIREMENTS AND ACTIONS REQUIRED This section provides a summary of all non-compliance with regulatory requirements identified during the inspection period, as well as actions required to address these issues. Further details pertaining to these items can be found in the body of the inspection report. 1 The owner of the sewage works had not prepared a written statement certified by a Professional Engineer confirming that the proposed works were constructed in accordance with the Environmental Compliance Approval. The statement of substantial completion, certified by a Professional Engineer, is required under Condition 4 of the ECA as well as for the works described in each Notice issued under the ECA. The statements have not been completed since the last inspection; however, the equipment is installed, operational and the plant operates well within the requirements. Action(s) Required: The Town should work with the appropriate engineering groups to ensure that the statements are prepared and are available. 2 The sewage works effluent sample results did not demonstrate compliance with additional limits prescribed by Environmental Compliance Approval. Condition 7 of the ECA also requires the effluent ph to be maintained between at all times, taking a weekly grab sample. In 2016, the effluent ph ranged from with the low reading occurring on October 19, 2016 and reported to the ministry in February It was noted that the online ph analyzer did not drop below 6.0 and the reported 5.82 was based on a single grab sample. Action(s) Required: No action is required. 3 All exceedances of any parameters were not reported in accordance with the Environmental Compliance Approval. Condition 12(3) of the ECA requires an oral report to the ministry as soon as reasonably possible and in writing within seven (7) days. The ph reading on October 19, 2016 was outside the ECA effluent limit of 6.0 but was not reported to the ministry until February 14, Action(s) Required: No action is required. Staff have been trained on the reporting requirements of the ECA. OCWA is reminded of the ECA reporting requirements. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 16 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)

20 Ministry of the Environment and Climate Change Inspection Report SUMMARY OF RECOMMENDATIONS AND BEST PRACTICE ISSUES This section provides a summary of all recommendations and best practice issues identified during the inspection period. Details pertaining to these items can be found in the body of the inspection report. In the interest of continuous improvement in the interim, it is recommended that owners and operators develop an awareness of the following issues and consider measures to address them. 1. The sewage works effluent sample results did not meet the effluent objectives stated in the Environmental Compliance Approval. The TSS annual average objective (15.0mg/L) was exceeded in 2015 at 22.6mg/L and was caused by a single high TSS result which was taken just after maintenance. The same situation happened in 2016 with an annual average of 16.1mg/L with a single high result in August bringing the average higher than usual. The TAN monthly average objective was exceeded in May 2016 at 2.2mg/L, just over the objective of 2.0mg/L. The loading did not exceed the objective. The effluent objective for ph is inclusive, at all times. This was met at all times with the exception of the reported ph of Recommendation: No action is required at this time. OCWA closely monitors the effluent quality. Report Generated for bittenje on 12/05/2017 (dd/mm/yyyy) Page 17 of 18 Site #: WW CARLETON PLACE WPCP Date of Inspection: 22/03/2017 (dd/mm/yyyy)