stp annual report 2019 - loyalist

SEWAGE TREATMENT PLANTS: AMHERSTVIEW WATER POLLUTION CONTROL PLANT BATH SEWAGE TREATMENT PLANT

Annual Report 2019 Utilities Division | Sewage Treatment Plants

Table of Contents

Annual Report 2019 .................................................................................................. 1

Introduction .............................................................................................................. 1

1. Executive Summary ........................................................................................... 3

2. Process Overview ................................................................................................. 4

2.1 Amherstview Water Pollution Control Plant (AWPCP) ................................. 4

2.2 Bath Sewage Treatment Plant (Bath STP) ................................................... 5

3. Sewage Collection System ................................................................................... 7

3.1 Amherstview Collection System ........................................................................ 7

3.2Bath Collection System ...................................................................................... 9

4. Pumping Stations Overflow Events .................................................................. 11

5. Flow Monitoring .................................................................................................. 12

5.1 Influent ............................................................................................................. 12

5.2Effluent ............................................................................................................. 15

6. Performance Monitoring and Effluent Quality Control Measures .................. 17

6.1 Amherstview WPCP ........................................................................................ 17

6.2 Bath STP ......................................................................................................... 24

7. Chemical Usage .................................................................................................. 29

8. Notice of Modification ......................................................................................... 30

9. Status of Proposed Works ................................................................................. 31

9.1 Amherstview (WPCP Wetland Pilot Project) .................................................... 31

10. Bypass, Spill or Abnormal Discharge Events ................................................ 32

11. Monitoring Equipment Calibration/Verification & Maintenance ................... 33

12. Sludge Removal ................................................................................................ 34

13. Plants Quarterly Reports .................................................................................. 36

14. Complaints Arising from Operations of the Works ....................................... 37

15. Maintenance on Major Structure &Equipment ............................................... 38

16. Appendix ............................................................................................................ 39

17. Regulations, References & Key Contacts ....................................................... 44

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2019 Annual Report | Loyalist Township

Annual Report 2019

Introduction Under Environmental Compliance Approval (ECA) agreements issued by the Ministry of Environment, Conservation and Parks (MECP), Loyalist Township is required to report annually on the values/parameters indicated in the ECAs for both operated facilities in Amherstview and Bath.

The report covers the period of January 1st to December 31st, 2019 and is prepared and submitted to the MECP by March 31st and to Council. The report is also made available for the public via the Township website.

The ECA lists in section 10 (6) the reporting requirements for Amherstview WPCP and in section 10.6 the requirements for Bath STP. The following is to be included in the annual report:

a) a summary and interpretation of all monitoring data and a comparison to the effluent limits in conditions described in the Approval, including an overview of the success and adequacy of the Works;

b) a description of any operating problems encountered, and corrective action taken;

c) a summary of all maintenance carried out on any major structure, equipment, apparatus, mechanism or thing forming part of the Works;

d) a summary of any effluent quality assurance or control measures undertaken in the reporting period;

e) a summary of the calibration and maintenance carried out on all effluent monitoring equipment; and

f) a description of efforts made, and results achieved in meeting the Effluent Objectives of the Approval;

g) a tabulation of the volume of sludge generated in the reporting period, an outline of anticipated volumes to be generated in the next reporting period and a summary of the locations to where the sludge was disposed;

h) a summary of any complaints received during the reporting period and any steps taken to address the complaints;

i) a summary of all By-pass, spill or abnormal discharge events; j) for Amherstview WPCP additionally, a copy of all Notice of Modifications

submitted to the Water Supervisor as a result of Schedule B, Section 1, with a status report on the implementation of each modification

k) for Amherstview WPCP additionally, a report summarizing all modifications completed as a result of Schedule B, section 3; and

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l) any other information the Water Supervisor/District Manager requires from time to time.

The wastewater treatment processes and their effectiveness are monitored and tested by on-line instrumentation, Supervisory Control and Data Acquisition (SCADA) system, chemical and physical measurements and are operated and maintained by Township staff who have successfully completed training and testing to become licensed Waste Water Treatment and Waste Water Collection Operators.

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1. Executive Summary

In 2019 the average daily flow into the Amherstview WPCP is at 52.7 % of the rated capacity for the system and 60.9 % for the Bath STP. The maximum daily treated raw water was recorded at 10,243 m3/d at Amherstview WPCP (64% of its maximum rated capacity as per Environmental Compliance Approval, ECA) and 3,961 m3/d for Bath STP (32.9% of the maximum rated capacity). The high flows occurred during periods of heavy rain and melting snow/ice which confirms that both systems are subject to inflow and infiltration (I/I). Efforts to reduce I/I of the sewage collection system are continuing, to improve the efficiency of the treatment process and also to delay a costly expansion of the treatment facilities.

Except for one elevated pH event in January 2019 in the final effluent, the Amherstview WPCP was operated in compliance with provincial requirements. The treatment process was optimized, and no further issue could be observed. No further action is required. Fuel was spilled on the property in August 2019 due to a faulty pump at Amherstview WPCP. The event was reported to the Spills Action Center and to MECP. The contamination was removed, monitored and no further action was required.

The Bath STP was operated in full compliance with provincial regulation in 2019. MECP inspected the plant on September 18th, 2019. The inspection rating was 100%.

Both wastewater treatment systems were operated in compliance with federal requirements in 2019. Environment and Climate Change Canada took samples from the final effluent at Bath STP and tested for acute toxicity on August 28th, 2019. The samples came back clean with no fish mortality.

All sampling has been conducted in accordance with the respective ECAs, the Environmental Protection Act, the Fisheries Act and related regulations. All required reports have been prepared and submitted in accordance with the legislation.

Loyalist’s Wastewater facilities

are treating the sewage properly and

in accordance with the provincial & federal

requirements

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2. Process Overview

2.1 Amherstview Water Pollution Control Plant (AWPCP)

The Amherstview WPCP is servicing Odessa, the Loyalist East Business Park and Amherstview. Its rated capacity is 6,400 m3/d and it has a peak flow capacity of 16,000 m3/d. It is discharging continuously to a leg of the Bayview Bog after disinfection of the effluent in two polishing ponds and a wetland.

Wastewater from Odessa, the Loyalist East Business Park and Amherstview is pumped to the plant via 4 pump stations. The raw wastewater enters the headworks for grit and screenings removal. The removed grit and screenings are hauled away for disposal. The influent receives secondary treatment through a conventional, suspended biomass activated sludge process in two aeration tanks with fine bubble aeration. The mixed liquor consists of influent mixed with return activated sludge (RAS). RAS is sludge removed from the final clarification tanks and contains microorganisms that naturally occur in wastewater and facilitates its degradation. In the presence of oxygen, these microorganisms break down organic material in the wastewater. The aeration tanks are equipped with ceramic disk diffuser and the air is supplied to the aeration tanks through electrically driven blowers. Phosphorous is removed by adding aluminum sulfate to the mixed liquor in the aeration tank inflow distribution channel.

The mixed liquor from the aeration tank proceeds to the final clarifier where the remaining solids settle to the bottom of the tank. A part of the sludge is returned as RAS to the aeration tank, the rest under goes thickening via a Gravity Belt Thickener (GBT) by adding polymer and stabilization in an Autothermal Thermophilic Aerobic Digester (ATAD) before being stored at the biosolids storage and hauled by a licensed third party (refer to section 12).

The septic receiving station is not operating due to financial constraints.

Environmental Compliance Approval: 2888-9RNM62 dated January 29th, 2015 Project Number: 110000196 Design Capacity: 6,400 m3/d (average day flow) 16,000 m3/d (maximum day flow)

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FIGURE 1. SCHEMATIC PROCESS – AMHERSTVIEW WPCP

2.2 Bath Sewage Treatment Plant (Bath STP)

The Bath Sewage Treatment Plant, servicing the Village of Bath and the Bath and Millhaven Institutions operated by Correctional Service Canada, has a rated capacity of 3,008 m3/d and a peak flow capacity of 12,032 m3/d. It is continuously discharging to Lake Ontario after disinfection of the final effluent with UV.

The wastewater is pumped via four pump stations and also flows via common gravity sewer to the wastewater treatment plant. The raw sewage enters the headworks for primary treatment (screening and grit removal). In the secondary treatment, the dissolved and suspended organic material is digested in three aeration tanks, each equipped with a fine bubble diffuser network and related appurtenances. The nutrient

Environmental Compliance Approval: 1869-94XQH6 dated March 14, 2013

Project Number: 120000177

Design Capacity: 3,008 m3/d (average day flow)

12,032 m3/d (maximum day flow)

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phosphorous is removed by adding aluminum sulfate. The solids settle in the larger of two circular clarifiers before the effluent is disinfected by UV and then discharged to Lake Ontario.

FIGURE 2. SCHEMATIC PROCESS BATH STP

A part of the produced sewage sludge is returned as RAS to the aeration tanks, the excess undergoes sludge treatment in an aerobic sludge digester. Sludge is thickened with a polymer and regularly hauled by a licensed third party (refer to section 12).

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3. Sewage Collection System 3.1 Amherstview Collection System

Raw sewage from Odessa is pumped via Bridge Street pumping station, from Amherstview via Lakeview pumping station and from the Business Park via Loyalist East Business Park Pumping station to the Amherstview WPCP. The total and monthly volume of sewage pumped from Bridge Street and from Amherstview in 2019 is summarized in the following table.

TABLE 1. SEWAGE VOLUMES IN THE COLLECTION SYSTEM OF AWPCP 2019

A total of 395,881 m3 was pumped from the Bridge Street pumping station in 2019. The maximum volume recorded was 3,504 m3 in November 2019. The monthly average calculated was 1,084 m3/d. The pump station is designed for 7,430 m3/d.

In 2019 from the Lakeview sewage pumping station the total volume of sewage pumped was 1,151,441 m3 for an average of 3,154 m3/day and a maximum day of 10,532 m3. The station is designed for a maximum of 23,000 m3/d and it’s currently operating well below the rated capacity.

Peak flows are recorded during heavy precipitation events, which indicate a significant amount of inflow and infiltration (I/I) in the sewage catchment area of this

FLOW (m3) TOTAL FLOW AVG DAY MAX DAY TOTAL FLOW AVG DAY MAX DAY BridgeSt SPS BridgeSt SPS BridgeSt SPS Lakeview SPS Lakeview SPS Lakeview SPS

ODESSA ODESSA ODESSA AMHERSTVIEW AMHERSTVIEW AMHERSTVIEW JAN 31,966 1,031 1,921 102,207 3,297 5,139 FEB 26,631 951 1,631 87,139 3,112 5,438 MAR 40,153 1,295 3,437 120,390 3,884 10,532 APR 49,108 1,637 2,526 121,586 4,053 7,017 MAY 48,449 1,563 3,244 125,068 4,034 6,884 JUN 29,499 983 1,933 89,572 2,986 4,136 JUL 15,238 492 645 67,509 2,178 3,008 AUG 15,019 484 635 65,506 2,113 2,815 SEPT 18,157 605 821 65,624 2,187 3,175 OCT 32,891 1,061 2,879 96,681 3,119 9,865 NOV 42,370 1,412 3,504 96,295 3,210 8,635 DEC 46,400 1,497 2,650 113,864 3,673 7,705

YEARLY TOTAL 395,881

1,151,441

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MAX MONTH

3,504

10,532 AVERAGE

MONTH

1,084

3,154

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pumping station. Township staff is continuing with infiltration reduction work such as manhole and sewer lateral repairs.

Pumping station flow meters were verified by a certified technician in October 2019. No abnormal conditions were noted.

No complaints were received from the operation of the pumping stations.

Station maintenance at the pumping stations included:

Preventive maintenance program on all major equipment Annual generator service Rebuilding the pumps at Bridge Street and Taylor Kidd sewage pumping

stations

The Islandview Pump station was upgraded in 2019.

CHART 1. AWPCP - SEWAGE PUMPING STATIONS – DAILY FLOWS (7 DAY MOVING AVERAGE) 2016 – 2019

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CHART 2. AMHERSTVIEW WPCP COLLECTION SYSTEM – RAW FLOW TRENDS 2016-2019

3.2 Bath Collection System The raw sewage is pumped via four pumping stations to the Bath STP. The average daily pumping hours are summarized in the following chart. The data indicates inflow and infiltration(I/I) during periods of heavy rain and mild spring weather due to melting snow and ice. The pumping hours were increasing in the second quarter of 2019, with a peak in June. During the dry summer months July to September 2019 the amount of pumping hours went significantly down and increased again in the fall 2019 during heavy rain periods (refer to Chart 3).

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based on a 30-day moving average

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CHART 3. BATH COLLECTION SYSTEM – RAW FLOW TRENDS 2014-2019

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4. Pumping Stations Overflow Events Nothing to report for the collection system of Amherstview WPCP and Bath STP in 2019.

FIGURE 3. PUMPING STATION

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5. Flow Monitoring 5.1 Influent AMHERSTVIEW WPCP

As defined by the Environmental Compliance Approval (ECA), rated capacity of the system at Amherstview WPCP is the flow of sewage into the sewage treatment plant, so the influent flow is used to determine capacity compliance. The annual average flow to the treatment system (influent) for 2019 was 3,360 m3/day; 52.5% of the plant’s rated capacity of 6,400 m3/day (refer to Table 2).The annual maximum daily flow to the plant was 10,243 m3/day in November 2019 and calculated to 64% of the rated capacity of 16,000 m3/d.

TABLE 2. SEWAGE INFLOW AMHERSTVIEW WPCP & BATH STP 2019

I/I identification efforts are continuing. Chart 4 shows that the maximal inflows decreased slightly since 2016. In 2019 the sewer main at Princeton was replaced.

UNIT

INFLUENT Amherstview WPCP 2019

INFLUENT Bath STP 2019

TOTAL AVG DAY MAX DAY TOTAL AVG DAY MAX DAY ECA CRITERIA m3 6,400 16,000 3,008 12,032 JAN m3 112,258 3,621 5,221 51,595 1,664 2,615 FEB m3 107,193 3,828 7,072 46,613 1,665 2,548 MAR m3 123,561 3,986 8,574 60,932 1,966 3,961 APR m3 120,703 4,023 6,036 65,942 2,198 3,025 MAY m3 122,470 3,951 6,229 72,306 2,332 3,341 JUN m3 88,671 2,956 4,356 60,520 2,017 2,482 JUL m3 64,569 2,083 2,395 52,214 1,684 2,041 AUG m3 62,250 2,008 2,357 49,168 1,586 1,866 SEPT m3 68,896 2,297 2,608 46,387 1,546 1,977 OCT m3 104,290 3,364 9,673 52,868 1,705 3,261 NOV m3 117,852 3,928 10,243 52,065 1,736 3,050 DEC m3 132,448 4,273 7,293 58,305 1,881 3,638 YEARLYTOTAL m3 1,225,161 668,915 MAX MONTH m3 10,243 3,961 AVERAGE MONTHLY m3 3,360 1,832

Percentage of rated capacity

% 52.5 64.0 60.9 32.9

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The flow trend pattern, peak flows (Chart 5) and the low concentration of the parameters, analyzed in the raw sewage (refer to section 6), continue to indicate significant inflow and infiltration (I/I) into the Loyalist East sewage collection system during periods of heavy rain and mild spring weather.

CHART 4. RAW SEWAGE FLOW (M3/DAY) TO THE AMHERSTVIEW WPCP2016-2019

CHART 5. RAW FLOW TREND (M3/DAY) AMHERSTVIEW WPCP 2017 – 2019

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BATH STP

As defined by the Environmental Compliance Approval (ECA), rated capacity of the system in Bath is the flow for which it is approved to handle. We have interpreted this to mean the flow of sewage into the sewage treatment plant, so the influent flow is used to determine capacity compliance.

The annual average daily flow to the sewage treatment plant (Bath STP) for 2019 was 1,832 m3/day and just about half of that flow came from Correctional Services Canada (CSC) Millhaven and Bath Institutions. The plant is designed to treat an average of 3,008 m3 per day, therefore, it is at 60.9% of its designed capacity (see Table 2). The annual maximum day flow to the plant was 3,961 m3/day (March 2019) due to inflow and infiltration.

CHART 6. BATH STP – AVERAGE FLOW PLANT INFLUENT(M3/DAY) 2016-2019

Peak flows are also on the rise for the Bath system, although staff observations have seen that I/I impact seems to be increasing from the sanitary collection system that comes from Correctional Services Canada (CSC).

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AWPCP Total Effluent flow:

1,094,645 m3 Average:2,998m3/d Maximum:8,185 m3/d

Bath STP Total Effluent flow:

581,345 m3 Average: 1,592m3/d Maximum: 3,676 m3/d

CHART 7. BATH STP – RAW FLOW TREND (M3/DAY) 2017– 2019

5.2 Effluent In accordance with the ECA flow meters are installed at the final outfall of both sewage treatment systems.

At Amherstview WPCP the final effluent V-notch weir, located at the end of the polishing lagoon process, was put back in service in 2018. In spring 2019 the meter got replaced. Routine checks were done by staff at the secondary and final effluent flow meter and verification will be completed for both in 2020. In doing this the flows will be measured accurately when the assessment of the wetland will be completed as discussed with the MECP District Office at the beginning of the project in 2015.

From the lagoon and wetland an annually estimated amount of 1,094,645 m3/d was discharged to the bog, the annual daily discharge average was calculated to 2998 m3/d and the maximum daily volume discharged was estimated to be 8,185 m3/d in March 2019.

The yearly plant effluent at Bath STP was calculated to 581,345 m3. An annual average daily volume of 1,592 m3/d was discharged to Lake Ontario. A maximum day flow of 3,676 m3/d was registered in March 2019.

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In table 3 the effluent flows in 2019 are summarized for Amherstview WPCP and Bath STP.

AMHERSTVIEW WPCP 2019 BATH STP 2019 PLANT EFFLUENT FINAL EFFLUENT PLANT EFFLUENT

TOTAL

(m3) AVGDAY

(m3/d) MAX DAY

(m3/d) TOTAL

(m3) AVG DAY

(m3/d) MAXDAY

(m3/d) TOTAL

(m3) AVG DAY

(m3/d) MAXDAY

(m3/d)

JAN 93,686 3,022 4,524 93,686* 3,022* 4,524* 46,423 1,498 2,376 FEB 76,361 2,727 4,460 76,361* 2,727* 4,460* 41,488 1,482 2,289 MAR 103,466 3,338 8,185 103,466* 3,338* 8,185* 54,024 1,743 3,676 APR 113,386 3,780 5,952 124,144 4,138 7,309 57,184 1,906 2,700 MAY 113,765 3,670 6,169 137,273 4,428 7,370 63,567 2,051 2,983 JUN 76,488 2,550 3,906 96,065 3,202 5,107 52,591 1,753 2,249 JUL 52,463 1,692 1,910 69,911 2,255 3,411 44,384 1,432 1,802 AUG 52,458 1,692 2,039 65,988 2,129 3,514 40,638 1,311 1,591 SEPT 53,578 1,786 2,178 67,490 2,250 2,936 38,363 1,279 1,631 OCT 85,941 2,772 8,119 99,236 3,201 7,539 44,953 1,450 2,983 NOV 114,119** 3,804** 7,623** 82,079 2,736 7,348 45,716 1,524 2,269 DEC 146,309 4,720 8,836 78,946 2,547 5,006 52,014 1,678 3,292 YEARLY TOTAL 1,082,020 1,094,645 581,345 MAX MONTH 8,836 8,185 3,676 AVERAGE MONTH

2,963 2,998 1,592

*The SE flow was used as final effluent estimates because the flow meter was not working correctly. ** The SE flows from round sheets were used due to SCADA issues TABLE 3. FINAL EFFLUENTFLOW AMHERSTVIEW WPCP AND BATH STP IN 2019

Wastewater facilities are treating the sewage properly and in accordance with the provincial & federal regulations.

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2019 Parameter

concentrations in tested effluents are

well below the limits of each ECA.

6. Performance Monitoring and Effluent Quality Control Measures All samples listed in section 9 of each ECA are collected by certified operators at locations and frequencies listed in that same section and, except for pH and temperature, are analyzed by Caduceon Environmental, federally accredited to conduct these analyses. Temperature and pH, as well as additional samples collected for operational control and effluent quality assurance, are analyzed in house by certified operators. Where applicable, if a specific parameter is analyzed by the contracted lab and in house, the analytical results for both are included in the calculation of averages as required by the ECA. Standard Operation Procedures, emergency plans, equipment preventative and predictive maintenance help ensure a rapid and effective response to issues and maintain the high quality of the effluent and biosolids.

6.1 Amherstview WPCP Raw sewage is sampled and tested as listed in the ECA section 9 (3) for BOD5, total suspended solids, total phosphorous, TKN, alkalinity, pH and temperature. The average concentrations are summarized in the following table 4.

Metcall & Eddy, 2003 lists expected concentrations in municipal wastewater:

TSS: 120-370 mg/l BOD5: 120-380 mg/l TP: 4-12 mg/l TKN: 20-705 mg/l

A comparison of these values with the average concentration measured at the Amherstview WPCP indicates significant inflow and infiltration during periods of high precipitation and mild spring weather.

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RAW SEWAGE AWPCP – AVERAGE 2019

ALKALINITY BOD5 pH TOTAL

PHOSPHOROUS

TEMP. TKN TOTAL

SUSPENDED SOLIDS

UNIT mg/l mg/l - mg/l oC mg/l mg/l

JAN 246 98 8.0 2.8 10.7 21 99

FEB 257 97 8.2 2.7 9.3 23 74

MAR 260 76 8.1 3.6 8.4 32 57

APR 291 78 7.9 2.9 9.3 12 92

MAY 293 120 7.8 4.3 11.8 24 175

JUN 267 127 7.7 4.3 14.5 27 206

JUL 300 161 7.4 4.5 17.4 33 223

AUG 296 164 7.5 5.3 18.8 43 172

SEPT 274 129 7.5 3.8 19.0 34 119

OCT 259 132 7.5 3.7 17.1 17 143

NOV 291 98 7.7 2.8 14.2 16 88

DEC 215 84 7.5 2.8 12.2 26 79

MIN MONTH 215 76 7.4 2.7 8.4 12 57

MAX MONTH 300 164 8.2 5.3 19.0 43 223 MONTHLY AVERAGE 271 114 7.7 3.6 13.6 26 127

TABLE 4. RAW SEWAGE SAMPLINGAWPCP 2019

Before the treated water leaves the plant to the lagoons and the wetland, a secondary effluent sample is taken and analyzed for alkalinity, total ammonia, CBOD5, nitrate, nitrite, pH, total phosphorous, temperature and total suspended solids. In table 5 the average concentration is listed.

Between July and September 2019 higher average concentrations of the parameters CBOD5, total phosphorous and total suspended solids were measured in the plant’s effluent. These results were caused by algae which grew on the clarifier effluent weirs and were drawn into the sample bottle (see figure 4).

FIGURE 4: CONTENT OF THE SAMPLE BOTTLE

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During the mentioned period in the final effluent, the average concentration for CBOD was < 3 mg/l. The total phosphorous never increased above0.59 mg/l and the TSS was recorded to maximal 3 mg/l.

TABLE 5. SECONDARY EFFLUENT (PLANT) AWPCP 2019

The plant's effluent is polished in 2 lagoons and a wetland. This treatment system performs well by producing final effluent with results that meet the performance criteria and objectives specified in the ECA (monthly average concentrations and annual average loadings), except for one pH exceedance in January 2019.

Active algae blooms in the polishing lagoons are presumed to be causing elevated pH in the final effluent. In the beginning of January 2019, unreasonably warmer and sunny weather could have led to changes in the water chemistry in the lagoons and the wetland which very likely caused an elevation of the pH in the final effluent.

One sample with a pH (above the ECA limit of 9.5) was recorded to 9.56 on January 8th, 2019 and as required by the ECA, notification was made verbally and in written

SECONDARY EFFLUENT PLANT – AVERAGE 2019

ALKALINITY T. AMMONIA CBOD5 NITRATE NITRITE pH TP TEMP TSS

UNIT mg/l mg/l mg/l mg/l mg/l - mg/l ∘C mg/l

JAN 130 0.04 3 14.40 0.10 7.4 0.28 8.4 3

FEB 130 0.37 3 16.80 0.10 7.2 0.27 7.3 2

MAR 105 0.07 3 16.07 0.10 7.3 0.28 7.4 3

APR 161 0.06 <3 11.34 <0.1 7.5 0.30 8.4 9

MAY 176 0.14 <3 11.03 0.14 7.3 0.52 11.4 9

JUN 153 0.14 3 16.10 0.13 7.2 1.05 14.9 9

JUL 94 0.40 4 24.40 0.15 7.1 0.96 19.6 17

AUG 97 0.09 12 23.93 <0.1 7.1 1.36 20.5 28

SEPT 124 0.21 <3 21.66 <0.1 7.1 0.89 19.6 5

OCT 139 0.10 3 13.65 <0.1 7.3 0.65 17.2 4

NOV 162 0.10 <3 13.95 <0.1 7.4 0.30 13.1 3

DEC 125 0.04 <3 16.80 <0.1 7.3 0.32 10.8 3

MIN MONTH 94 0.04 <3 11.03 <0.1 7.1 0.27 7.3 2

MAX MONTH 176 0.40 12 24.40 0.15 7.5 1.36 20.5 28

MONTHLY AVERAGE 133 0.15 3 16.68 0.08 7.3 0.60 13.2 8

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to the MECP District office. As protective measure some of the valves in the wetland were closed and pH stabilized quickly afterwards.

As per protocol samples were then analyzed daily until January 22nd, 2019 and all results came back below 9.5. The average of pH in the final effluent was calculated to 9.0 in January 2019, the annual average was 7.3 in 2019.No further action is required.

The implementation of the wetland pilot project was intended to attenuate the effects of algae growth on the pH and improved the overall quality of the effluent (see chart 8 and table 6).

CHART 8. PH-TREND IN THE FINAL EFFLUENT AMHERSTVIEW WPCP 2018-2019

In the following table 6 the averages of the sampling and testing results of the final effluent are summarized.

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pH lower limit upper limit

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* 3 mg/l from June to August, 5 mg/l from September to May **monthly average / geometric mean (for E.coli) *** quarterly average & exemption for the 3rd quarter The ECA limit is the limit which can’t be exceeded

TABLE 6. AMHERSTVIEW WPCP - FINAL EFFLUENT AVERAGE CONCENTRATION 2019

The slightly higher TP concentration leaving the secondary and final effluent in October 2019 was very likely caused by higher inflows due to heavy rain events and maintenance activities in the aeration cell.

Compared to the final effluent composition in 2015 (start of the construction of the wetland), the wastewater parameter’s average concentrations of the final effluent decreased after the wetland was commissioned and established in 2019. Discharging the plant’s effluent to the polishing lagoons and the wetland increased the effluent quality significantly (see table 7).

FINAL EFFLUENT PLANT - AVERAGE

E. coli** T. AMMONIA CBOD5 NITRATE NITRITE pH TP TEMP TSS UNIT cfu/100 ml mg/l mg/l mg/l mg/l - mg/l ∘C mg/l JAN 1 0.11 3 9.50 0.10 9.0 0.20 0.7 7 FEB 8 0.37 3 11.40 0.10 7.7 0.34 0.5 2 MAR 7 0.10 <3 11.62 <0.1 8.0 0.27 2.0 5 APR 4 0.05 <3 6.26 <0.1 9.1 0.12 7.2 3 MAY 13 0.10 3 1.73 0.10 9.1 0.19 14.1 3 JUN 20 0.15 <3 1.90 <0.1 8.3 0.29 18.8 4 JUL 49 0.12 <3 0.06 <0.1 7.7 0.45 23.1 3 AUG 56 0.08 <3 0.06 <0.1 7.9 0.59 21.2 2 SEPT 33 0.08 <3 0.26 <0.1 8.1 0.41 16.9 2 OCT 26 0.08 3 2.93 <0.1 7.9 0.65 11.8 4 NOV 9 0.07 <3 6.48 <0.1 8.1 0.36 3.6 2 DEC 13 0.09 <3 11.85 0.23 7.8 0.27 1.2 2 MIN MONTH 1 0.05 <3 0.06 <0.1 7.70 0.12 0.5 2 MAX MONTH 56 0.37 3 11.85 0.2 9.13 0.65 23.1 7 MONTHLY AVERAGE 20 0.12 <3 5.34 0.1 8.23 0.34 10.1 3

ECA LIMIT 200** 3*/5** 15** 6.0 - 9.5 0.9** 25** ECA OBJECTIVE

100** 2*/4** 10 6.5 - 9.0 0.7** 15

FEDERAL WSER

25 25***

22


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Wetland The wetland

increased treatment efficiency at

Amherstview WPCP.

TABLE 7. AMHERSTVIEW WPCP - FINAL EFFLUENT COMPARISION - AVERAGES 2015 & 2019

As per ECA definition, the loading concentration value is obtained by multiplying the concentration of the contaminant by the average daily flow. Final effluent loadings were well below the ECA limit. See table 8 for more information.

TABLE 8. AMHERSTVIEW WPCP - FINAL EFFLUENT LOADINGS - MONTHLY AVERAGE 2019

PARAMETER UNIT 2015 2019 E.coli cfu/100 ml 79 20 T. AMMONIA mg/l 0.47 0.12 CBOD5 mg/l <2 <3 NITRATE mg/l 7.64 5.34 NITRITE mg/l 0.44 0.1 pH - 8.6 8.2 TP mg/l 0.5 0.34 TSS mg/l 8 3

FINAL EFFLUENT LOADINGS

CBOD5 SUSPENDED SOLIDS

TOTAL PHOSPHOROUS

TOTAL AMMONA

UNIT kg/d kg/d kg/d kg/d

JAN 9 21 0.6 0.3

FEB 8 6 0.9 1.0

MAR 5 17 0.9 0.3

APR 6 14 0.5 0.2

MAY 14 11 0.8 0.4

JUN 5 12 0.9 0.5

JUL 3 7 1.0 0.3

AUG 3 4 1.3 0.2

SEPT 3 5 0.9 0.2

OCT 5 14 2.1 0.2

NOV 4 6 1.0 0.2

DEC 4 6 0.7 0.2

MINIMUM 3 4 0.5 0.2

MAXIMUM 14 21 2.1 1.0

AVERAGE 6 10 1.0 0.3

ECA LIMIT 96 160 5.7 19.2/32.0* * 19.2 kg/d from June to August, 32.0 kg/d from September to May

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The annual average of BOD removal efficiency was 98% for the entire system. Even with higher concentrations of TP leaving the plant, TP removed by the entire system increased after commissioning and establishment of the wetland and was calculated to 91% for 2019.

CHART 9. REMOVAL EFFICIENCIES AMHERSTVIEW WPCP

To keep the concentration and loading of each required parameter under the set objectives, some of our efforts include:

annual review of the infrastructure needs where recommendations for maintenance, rehabilitation and renewal programs are considered

monitoring of inflow and infiltration and long-term financial commitment to correct excessive flows into the wastewater collection system

provision of back up equipment and contingency processes to handle emergencies and maintenance shutdowns

preventive maintenance certification and training of our operators to operate the systems

efficiently and effectively additional in-house operational sampling beyond regulatory

requirements

80.0

85.0

90.0

95.0

100.0

Mar

-18

Apr-1

8

May

-18

Jun-

18

Jul-1

8

Aug-

18

Sep-

18

Oct

-18

Nov

-18

Dec

-18

Jan-

19

Feb-

19

Mar

-19

Apr-1

9

May

-19

Jun-

19

Jul-1

9

Aug-

19

Sep-

19

Oct

-19

Nov

-19

Dec

-19

Rem

oval

Effi

cien

cy %

Efficiency BOD Efficieny TP Efficiency SS

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6.2 Bath STP

Raw sewage is sampled and tested as listed in the ECA section 9.4 for BOD5, total suspended solids (TSS) and total phosphorous (TP). The average concentrations are summarized in the following table and indicate inflow and infiltration during periods of high precipitation and mild spring weather.

RAW SEWAGE – MONTHLY AVERAGE

TBOD5 TSS TP

UNIT mg/l mg/l mg/l

JAN 117 127 3.3

FEB 104 126 2.8

MAR 90 141 2.9

APR 85 110 2.5

MAY 90 142 3.7

JUN 123 233 3.5

JUL 73 90 3.6

AUG 102 149 3.0

SEPT 98 112 3.9

OCT 77 167 2.8

NOV 71 73 2.6

DEC 71 100 2.5

MIN 71 73 2.5

MAX 123 233 3.9

AVERAGE 92 131 3.1 TABLE 9. BATH STP - AVERAGE RAW SEWAGE CONCENTRATION

Grab samples are collected for pH, temperature and E. coli. Composite samples are collected for all other parameters (CBOD5, TSS, TP, total ammonia (as N, T. NH4), unionized ammonia (NH3).

Results confirmed that the performance of the treatment facility is meeting the effluent limits as set, except for the parameter total phosphorous in the month of January 2019.

Final effluent sample results for 2019, expressed as:

annual average concentration and loading for total suspended solids and carbonaceous biological oxygen demand (CBOD5);

annual average loading for total phosphorous; and monthly geometric mean density for E.coli

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were below the annual or monthly average limits, whichever is applicable. Average concentrations and loadings met the set objectives as well. In 2019, the total suspended solids annual average concentration in the final effluent of the sewage treatment plant was below the ECA objective. It was also below the allowable quarterly limit of 25 mg/l under the federal regulation for wastewater system effluent for all four quarters of 2019.

TABLE 10. FINAL EFFLUENT SAMPLE RESULTS – BATH STP *monthly geometric mean ** monthly average ** quarterly average

The removal efficiencies are summarized in Chart 11. In 2019 the removal efficiency for CBOD5 was 96% and for total suspended solids was 88% in 2019. The overall total phosphorous removal efficiency increased to 89% from 2018 to 2019. The overall NH3 removal efficiency was calculated to 86% in 2019.

CBOD5 TSS TP Loadings T.NH4

(N) NH3 T pH E. coli CBOD5 TSS TP

UNIT mg/l kg/d mg/l mg/l ∘C - CFU/100 ml

JAN 3 12.6 0.3 4.5 19 0.4 0.40 <0.01 9.5 7.2 5

FEB 4 10.0 0.3 5.9 15 0.4 3.40 <0.01 8.2 7.0 2

MAR 6 10.4 0.3 10.5 18 0.5 5.73 0.02 8.2 7.2 2

APR 3 10.9 0.2 5.9 21 0.4 6.33 0.02 9.7 7.2 3

MAY 7 12.4 0.2 13.8 26 0.4 0.44 <0.01 12.9 6.9 3

JUN 3 6.3 0.1 4.8 11 0.2 0.07 <0.01 16.3 7.1 3

JUL <3 8.5 0.2 2.1 12 0.2 0.08 <0.01 20.0 7.0 3

AUG <3 6.3 0.2 2.0 8 0.3 0.12 <0.01 21.7 7.1 3

SEPT <3 6.3 0.2 1.9 8 0.2 0.13 <0.01 20.6 7.0 3

OCT <3 7.5 0.2 2.2 11 0.2 0.11 <0.01 26.4 7.4 2

NOV 3 18.8 0.5 3.8 29 0.8 0.12 <0.01 13.6 7.2 2

DEC 3 24.6 0.9 5.7 41 1.6 0.11 <0.01 10.4 7.5 5

MIN <3 6.3 0.1 1.9 8 0.2 0.07 <0.01 8.2 6.9

MAX 7 24.6 0.9 13.8 41 1.6 6.33 0.02 7.5

AVERAGE 3 11.2 0.3 5.3 18 0.5 1.42 <0.01 14.8 7.1 3*

ECA LIMITS 25 25 1* 75.2 75.2 3.0 200* ECA

OBJECTIVES 15 15 1* 45 45 3.0

Federal WSER 25** 25**

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CHART 10. REMOVAL EFFICIENCIES BATH STP

In a continued effort to address the suspended solids and total phosphorous exceedances, the following steps were taken in 2019:

Completing a process evaluation with continued support from the process consultant

Implemented additional monitoring processes Reduced retention time in the aeration process Reduced the sludge age in the aeration process & continued to biweekly haul

the sludge in 2019 (see table 10, Chart 12) Adjusted air flow to the aeration tanks as much as possible with the existing

equipment – an upgrade to the aeration system to make further meaningful adjustments planned for 2020

Established a budget for an upgrade to the aeration system Met with CSC to discuss the impact of the institutions on the sewage

treatment facility – ongoing

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%

CBOD TP SS NH3

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TABLE 11. BATH STP – MLSS/MCRT 2016-2019 2016 2017 2018 2019

MLSS* MCRT** MLSS MLSS MLSS MCRT MLSS MCRT

UNIT mg/l days mg/l mg/l mg/l days mg/l days

January 4588 27 3924 34 4076 25 3165 16

February 5029 31 4204 28 4259 21 2930 18

March 5188 34 4601 19 4190 24 2943 19

April 5232 32 3857 17 4159 21 2984 20

May 4684 43 3556 28 4081 23 3177 17

June 4709 29 3165 22 3431 26 3216 19

July 4834 26 3673 34 4121 28 2592 18

August 3558 24 3749 35 4140 31 2694 16

September 3523 34 3747 33 4103 19 2703 21

October 3238 29 3764 20 3180 14 2768 18

November 3534 23 3516 27 2874 12 2641 16

December 3561 25 3568 24 2899 12 2279 17

Average 4307 30 3777 27 3793 21 2841 18

min 3238 23 3165 17 2874 12 2279 16

max 5232 43 4601 35 4259 31 3216 21 Table 11. Bath STP – MLSS/MCRT 2016-2019 *MLSS – mixed liquor suspended solids, **MCRT – mean cell residence time

CHART 11. BATH STP - RAS FLOW VS. EFFLUENT SS 2016 - 2019

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

0

500

1,000

1,500

2,000

2,500

3,000

3,500RAS Flow (m3/day) Effluent SS (mg/l)

Effluent SS

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Bath STP

Vigorous efforts by Township resulted in better performance

results at Bath STP in 2019.

The activated sludge process continues to operate in the low range of typical operating parameters for an activated sludge process, i.e. low loading rates, with longer hydraulic retention times (HRT) and thin sludge blanket. This reduces the system’s ability to handle sudden variations such as higher flows, higher loadings and/or, toxic loadings. Through observation and additional lab analysis, the increase in suspended solids concentration in the final effluent is most likely caused by pin floc and carryover of foam from the aeration tanks.

The specialized microbial analysis confirmed that the filamentous bacteria Nocardia is causing excessive foam. Nocardia proliferates in high fat, oil and grease (FOG) environment and long retention time. The treatment plant is not designed to handle excessive volumes of FOG and we are currently developing a plan to reduce FOG reaching the facility. Preliminary observations suggest most of the FOG comes from the correctional institutions. Discussions are continuing to develop a plan to address FOG.

The occasional high total phosphorous concentration in the final effluent is linked to high suspended solids concentration in that same period.

To keep the concentration of each required parameter under the set objectives, some efforts include:

annual review of the infrastructure needs where recommendations for maintenance, rehabilitation and renewal programs are considered

monitor inflow and infiltration and long-term financial commitment to correct excessive flows into the wastewater collection system

provide back up equipment and contingency processes to handle emergencies and maintenance shutdowns

certification and training of our operators to operate the systems efficiently and effectively

additional in-house operational sampling beyond regulatory requirements

engage a process consultant to evaluate process data to help develop an action plan to address performance deficiencies re: suspended solids removal

as needed foam removal at the aeration cell and clarifier to decrease Nocardia concentrations in the solids.

preventive maintenance

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7. Chemical Usage Polymer and aluminum sulphate are used during the treatment process at both wastewater treatment plants. The polymer is used to thicken the sludge and the aluminum sulphate is used to remove the nutrient phosphorous from the wastewater.

The following table outlines the annual chemical consumption for 2019.

AMHERSTVIEW WPCP 2019 BATH STP 2019 SLUDGE THICKENING PHOS. REMOVAL SLUDGE THICKENING PHOS. REMOVAL

POLYMER USED

(l)

POLYMER DOSAGE

(mg/l)

ALUM USED

(l)

ALUM DOSAGE

(mg/l)

POLYMER USED (kg)

POLYMER DOSAGE

(kg/t)

ALUM USED

(l)

ALUM DOSAGE

(dry) (mg/l)

JAN 102 33.4 6709 38.8 46 6.2 6228 72.5

FEB 97 32.5 5892 35.7 46 6.6 5468 70.3

MAR 105 33.5 6941 36.5 44 6.1 6891 68.0

APR 97 36.9 6606 35.6 37 5.9 7602 69.2

MAY 87 22.0 7039 37.4 54 6.0 8359 69.3

JUN 68 25.6 6858 50.3 50 5.8 6853 68.1

JUL 59 15.9 6543 65.9 48 6.0 5897 68.1

AUG 34 10.0 6406 66.9 38 6.1 5759 70.6

SEPT 25 8.8 5692 53.7 40 5.8 5434 70.5

OCT 59 20.4 7908 49.3 40 6.0 6056 68.8

NOV 34 13.5 7288 40.2 41 6.0 6149 70.8

DEC 56 22.3 7467 36.6 38 5.7 6803 70.1 YEARLY TOTAL 823 81347 522 77499

MINIMUM 25 8.8 35.6 37 5.7 68.0

MAXIMUM 105 36.9 66.9 50 6.6 72.5

AVERAGE 69 23 6779 45.6 44 6.0 6458 69.7 TABLE 12. CHEMICAL USAGE AT AMHERSTVIEW WPCP AND BATH STP 2019

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8. N

otic

e of

Mod

ifica

tion

8. Notice of Modification There were no notices of modification submitted to the MECP District Office in 2019 for Amherstview WPCP because no modifications pre-approved under Schedule B Section 1 took place.

For Lakeview pumping station were no notices of modification submitted to the MECP District Office in 2019 because no modifications pre-approved under Schedule A Section 1 took place.

FIGURE 5. NOTICE OF MODIFICATION

9. S

tatu

s of

Pro

pose

d W

orks

31


9. Status of Proposed Works 9.1 Amherstview (WPCP Wetland Pilot Project) To address the elevated pH issue in the lagoons’ effluent, the Township is working with Queen’s University to design and establish a native wetland in the last cell of the polishing lagoons (Cell 4). The strategy is supported by a 5-year study of the Bayview Bog, the receiving stream of the lagoons’ effluent, a comprehensive chemical, physical and biological assessment completed in 2013 and bench-scale testing in 2014. Following an extensive consultation with the MECP, the conceptual design was approved as the Wetland Pilot Project.

Construction began in May 2015 with the draining and removal from service of Cell 4, placement of fill, shaping of internal berms, installation of piping and substrates and planting of vegetation. Commissioning of the works began at the end of 2016 but had to be stopped as the water level through the wetland could not be balanced, compromising the stability of several berms. There were two (2) short periods of flow through the wetland in 2017 to assist plant growth and tryout a prototype for modified control structures. Design modifications and stabilization of the berms were completed in December 2017. Commissioning resumed in April 2018.

Following to the completion and establishing of the wetland a two-year monitoring program has been implemented. Results and a report are expected in 2020.

FIGURE 6. WETLAND

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10. B

ypas

s, S

pill

or A

bnor

mal

Dis

char

ge E

vent

s

10. Bypass, Spill or Abnormal Discharge Events On May 6th, 2017 an estimated volume of 530 m3 of raw sewage was diverted to the attenuation pond, as permitted by the ECA #2888-9RM62, due to excessive incoming flows. Flows diverted remain in the attenuation pond until it was sampled and compared with the final effluent criteria to decide if it could be released through the polishing lagoons or returned to the plant for treatment. This Cell is also exposed to all forms of precipitation over its large surface area, as such most of the content in the Cell is precipitation based. The attenuation pond was sampled on April 11th, 2019 and the analysis results came back meeting the criteria listed in the ECA under condition 7. Effluent limits (see table 12).

Parameter Unit ECA Objective, Condition 6

ECA Limit, Condition 7

Result 11.4.19

E. Coli CFU/100 ml 100 200 2 CBOD5 mg/L 10.0 15.0 5 TSS mg/L 15.0 25.0 12 TP mg/L 0.7 0.9 0.63 TAN* mg/L 2.0 / 4.0 3.0 /5.0 0.13 NO2-N mg/L - - <0.1 NO3-N mg/L - - <0.1 pH - - 6.0 – 9.5 8.2 T ∘C - - 10.8 * 2.0/3.0 mg/L Jun 1 to Aug 31, 4.0/5.0 mg/L Sep 1 to May 31

TABLE 13. SAMPLING RESULTS OF THE ATTENUATION POND, APRIL 2019

The information was provided to the MECP District Office and consent was given to discharge the attenuation pond to the polishing lagoons and wetlands by keeping the discharging rate as low as reasonable possible, on April 24th, 2019. The pond was discharged slowly until July 29th, 2019 using a diesel pump.

On July 29th, 2019 the fuel line of the pump broke and approximately 35 litres of fuel leaked out onto the ground and bank leading down to the attenuation pond. SAC and the district office were informed immediately. The spill was cleaned up and the site was monitored for a period. The MECP District Office was informed about the completion of the clean up and the results of the monitoring. No further action is required.

There was no bypass, spill or abnormal discharge event in 2019 at Bath STP.

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Equi

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Verif

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ion

& M

aint

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33


Accurate Equipment

at both treatment plants.

11. Monitoring Equipment Calibration/Verification & Maintenance

Laboratory equipment is verified and/or calibrated as per the manufacturer’s instructions. Furthermore, lab equipment was verified on site in April 2019 by a certified service technician. All lab equipment at Amherstview WPCP and Bath STP is functioning accurately and properly.

Flow meters at Amherstview WPCP were verified by a certified technician in October 2019. The final effluent V-notch weir, located at the end of the polishing lagoon process, was put back in service within 2018 and a new unit was installed in April 2019. Routine checks and necessary adjustments were done by staff at the secondary and final effluent flow meter in 2019. A verification will be completed for both flowmeters (secondary and final effluent) in 2020.All other flowmeters were within the acceptable range if accuracy.

All flow meters at Bath STP were verified by a certified technician in October 2019 and determined to work properly.

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12. S

ludg

e R

emov

al

Below Limits

Concentration of pathogens and metals

in the sludge were well below limits.

12. Sludge Removal Smith Septic Services Limited (Smith’s) is the townships MECP approved biosolids haulage contractor and is obligated to maintain and abide by ECA # 6069-5BXNTB, as amended, issued for a waste management system for the collection, transportation or handling of processed organic waste and non-agricultural source material (NASM) and ECA # S-3708-42, as amended, issued for a waste disposal transfer site for the temporary storage of processed organic waste and non-agricultural source material.

The Amherstview WPCP produced 18,630 m3 of waste activated sludge in 2019, all of which was directed through a thickening process for further treatment in the Autothermal Thermophilic Aerobic Digestion (ATAD) units. The digested sludge is stored in the biosolids storage cell located east of the attenuation pond. The biosolids storage cell is designed to store up to 16,100 m3 of stabilized sludge and is divided into 3 sections for maintenance purposes. Through thickening and digestion, a total of 2,341 m3 of digested sludge was directed to the storage cell in 2019. We are not anticipating a significant change in the volume of biosolids produced in 2019.

At Amherstview WPCP a total of 2,508 m3 of biosolids was hauled away in 2019 to Smiths’ waste disposal transfer site, as mentioned above, for future land application as a soil conditioner to a NASM site and to Wemp Farm under NASM plan #22853.

Smith’s hauled a total of 4,463 m3 of stabilized sludge from the Bath STP to their certified storage lagoons. The material is blended with other processed organic waste and NASM generated within the Province of Ontario, to be ultimately land applied on NASM sites.

Loyalist Township is not anticipating a significant change in the volume of biosolids produced in 2019 at Bath STP.

As a generator, Loyalist Township has the obligation to test the stabilized sludge and communicate the results to the farmer or broker (Smith’s, in our case). Biosolids’ acceptability for land application is determined by averaging the results of

12. S

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35


all samples taken in a four-month period preceding the transfer.

In 2019, the acceptable concentration levels were met for pathogens and all regulated metals at Amherstview WPCP and at Bath STP. Please refer to the tables in the Appendix (section 16)

In comparison with previous years, trending indicates that at Amherstview WPCP the concentration of chromium, lead, molybdenum, nickel and zinc in the sludge are, even if well below the limits, increasing while arsenic, cadmium, cobalt, mercury and selenium are consistent.

Limit Unit 2016 2017 2018 2019 Volume hauled - m3 1,540 4,468 1,740 4,463 E-Coli (CFU/g)* 2,000,000 cfu/g 1,737 1,849 12,106 9,554 ARSENIC 170 mg/kg 3 19 19 17 CADMIUM 34 mg/kg 1 3 6 6 CHROMIUM 2,800 mg/kg 16 17 14 20 COBALT 340 mg/kg 2 3 15 6 COPPER 1,700 mg/kg 1,328 1,195 1,123 1215 LEAD 1,100 mg/kg 12 10 19 21 MERCURY 11 mg/kg 0.5 0.4 0.4 0.4 MOLYBDENUM 94 mg/kg 6 5 10 14 NICKEL 420 mg/kg 19 19 11 26 SELENIUM 34 mg/kg 5 9 21 21 ZINC 4,200 mg/kg 433 418 460 531 * Geomean TABLE 14. AVERAGES 2016 – 2019 AMHERSTVIEW WPCP

The concentration in the sludge at Bath STP are well below the limits. Trending demonstrates consistent bacti and heavy metals concentrations.

TABLE 15. AVERAGES 2016 – 2019 BATH STP

Limit Unit 2016 2017 2018 2019 Volume hauled - m3 4,667 4,240 4,255 4,463 E-Coli (CFU/g)* 2,000,000 cfu/g 19,150 56,293 59,909 58,547 ARSENIC 170 mg/kg 4 4 4 3 CADMIUM 34 mg/kg 1 1 1 1 CHROMIUM 2,800 mg/kg 8 9 10 9 COBALT 340 mg/kg 1 1 2 1.5 COPPER 1,700 mg/kg 211 202 240 200 LEAD 1,100 mg/kg 4 5 6 4 MERCURY 11 mg/kg 0.4 0.3 0.3 0.5 MOLYBDENUM 94 mg/kg 3 3 5 4 NICKEL 420 mg/kg 6 10 8 7 SELENIUM 34 mg/kg 3 3 3 3 ZINC 4,200 mg/kg 166 207 283 225 * Geomean

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13. P

lant

s Q

uarte

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epor

ts

13. Plants Quarterly Reports Quarterly reports (MUMP) for both wastewater treatment plants are submitted electronically to [email protected] and the MECP District Office on the prescribed forms supplied by the Ministry and on a regular basis.

4 6 1 2 0 0 0 0 1 7 7 0 6 1 8 3 0 2 R1 2 3 11 16 19 20 21 22 80

0 3 Parameter Code Dec. Monthly Average Results12 13 1 8 . 0 1 1

0 2 0 9 . 1

0 1 7 . 1 1

0 1 9 . 1

.

.

.

.

.

.

.30 34 35 38

0 4 Parameter Code Dec. Monthly Average Results12 13 0 1 8 . 1 1

1 6 . 8 1 1

0 1 3 4 . 1

2 7 . 1 8 4

2 5 . 0 5 4

3 0 . 0 7 0 1

0 2 . 4

.

.

.

.30 34 35 38

Un-Ionized Ammonia (mg/L)

Escherichia coli / E. coli (CFU/100ml) *

Project Name:

Mailing Address:

Temperature (degrees C)

Operator's Comments and Contact Person's Phone number & e-mail address: (613) 386-7351 [email protected], MJ Merritt, Utilities Compliance Supervisor *Geomean

File No. Works Number Data Period

Month Year

C.P.

Discharge Type Update Code

Nitrate (mg/L)

Nitrite (mg/L)

R2Municipal Utility Monitoring Program Mechanical Plants

RAW SEWAGE

# of Samples

Mailing Address:

Loyalist Township

263 Main St, PO Box 70, Odessa, ON, K0H 2H0

# of Samples

Days

Operating Authority

FINAL EFFLUENT

Ministry of the Environment

pH

pH

Alkalinity (mg/L)

Alkalinity (mg/L)


Ammonia (mg/L)

Loyalist Township

Bath Sewage Treatment Plant

50 Sir John Johnson Dr, Bath, ON, K0H 1G0

Municipality:

4 6 1 1 0 0 0 0 1 9 6 1 0 1 8 3 1 2 R1 2 3 11 16 19 20 21 22 80

0 1 Dec.12 13 5 0 0 1 0 3 8 6 . 4 8 4

5 0 0 1 5 3 2 . 7 9 0

5 0 0 2 0 3 8 . 0 7 230 34 35 38

2 612 13 5 0 0 2 6 3 . 0

8 0 5 6 3 1 .5 0 0 4 0 3 . 0

8 0 5 6 5 1 .30 34 35 38

0 312 13 0 0 0 0 1 0 1 1 8 . 5

0 0 0 0 6 0 1 0 3 . 6

0 0 0 2 0 2 3 2 . 2 0 1

0 0 0 3 3 1 3 . 5 530 34 35 38

0 412 13 0 0 0 0 1 1 < 2 . 0 5

0 0 0 0 6 1 3 . 0 9

0 0 0 1 9 2 0 . 0 6 5

0 0 0 2 0 2 .0 0 0 3 3 2 0 . 3 5 530 34 35 38

0 712 13 5 0 1 0 0 1 .

8 0 4 1 0 1 .8 0 4 2 0 1 .30 34 35 38



Operating Authority

Chlorine Dosage - (mg/L as Cl2)

Mailing Address:

Loyalist Township


Loyalist Township

Amherstview Water Pollution Control Plant

4326 Taylor-Kidd Blvd, Amherstview, ON, -

Municipality:

Project Name:

Mailing Address:

Chlorine Residual - (mg/L as Cl2)

Total Phosphorus (mg/L)

DISINFECTION

Chlorine Used - (kg as Cl2)

TKN (mg/L)

FINAL EFFLUENTBOD5 (mg/L)

Ammonia + Ammonium (mg/L)

Suspended Solids (mg/L)

(103 m3)

(hours)

(hours)

TKN

Total Phosphorus

(mg/L)

(mg/L)

(mg/L)

(mg/L)

Duration

Secondary Bypass Volume

C.P.

Days Discharge Type Update Code

Monthly ResultsParameter CodeFLOWS

File No. Works Number Data PeriodMonth Year

Maximum Daily Flow

(103 m3)

(103 m3/d)

(103 m3/d)

Operator's Comments and Contact Person's Phone number & e-mail address: (613) 386-7351 [email protected], Birgit Piberhofer, Utilities Compliance Supervisor Polishing lagoons and wetland used for disinfection, requires no chlorine.

BYPASSPlant Bypass Volume

Total Flow

Average Daily Flow

# of Occurrences

RAW SEWAGEBOD5

Suspended Solids

# of Samples

Duration

(103 m3)

4 6 1 1 0 0 0 0 1 9 6 1 0 1 8 3 1 2 R1 2 3 11 16 19 20 21 22 80


0 1 8 . 1 2

0 2 4 9 . 6

.

.

.

.

.

.

.

.30 34 35 38


0 9 . 1 0

0 6 0 . 5

0 1 7 7 . 5

1 4 . 2 5

2 < 0 . 1 0 5

.

.

.

.

.30 34 35 38



RAW SEWAGE

# of Samples

Mailing Address:

Loyalist Township


# of Samples

Days

Operating Authority

FINAL EFFLUENT

pH


Escherichia coli / E. coli (CFU/100ml)


Alkalinity (mg/L)

Loyalist Township

Amherstview Water Pollution Control Plant

4326 Taylor-Kidd Blvd, Amherstview, ON, -

Municipality:

Project Name:

Mailing Address:

pH

Operator's Comments and Contact Person's Phone number & e-mail address: (613) 386-7351 [email protected], Birgit Piberhofer, Utilities Compliance Supervisor *Geomean

File No. Works Number Data Period

Month Year

C.P.

Discharge Type Update Code

Alkalinity (mg/L)

Nitrate (mg/L)

Nitrite (mg/L)

4 6 1 2 0 0 0 0 1 7 7 0 6 1 8 3 0 2 R1 2 3 11 16 19 20 21 22 80

0 1 Dec.12 13 5 0 0 1 0 3 3 9 . 8 2 0

5 0 0 1 5 3 1 . 3 2 7

5 0 0 2 0 3 1 . 6 7 130 34 35 38

2 612 13 5 0 0 2 6 3 . 0

8 0 5 6 3 1 .5 0 0 4 0 3 . 0

8 0 5 6 5 1 .30 34 35 38

0 312 13 0 0 0 0 1 0 1 4 8 . 4

0 0 0 0 6 0 1 7 5 . 1 2

0 0 0 2 0 2 2 6 . 2 0 1

0 0 0 3 3 1 4 . 2 430 34 35 38

0 412 13 0 0 0 0 1 1 < 2 . 0 4

0 0 0 0 6 1 8 . 3 1 5

0 0 0 1 9 2 3 . 4 5 4

0 0 0 2 0 2 1 1 . 9 0 1

0 0 0 3 3 2 0 . 2 3 1 530 34 35 38

0 712 13 5 0 1 0 0 1 .

8 0 4 1 0 1 .8 0 4 2 0 1 .30 34 35 38

Maximum Daily Flow

(103 m3)

(103 m3/d)

(103 m3/d)

Operator's Comments and Contact Person's Phone number & e-mail address: (613) 386-7351 [email protected], MJ Merritt, Utilities Compliance Supervisor Disinfection done by UV

BYPASSPlant Bypass Volume

Total Flow

Average Daily Flow

# of Occurrences

RAW SEWAGEBOD5

Suspended Solids

# of Samples

Duration

(103 m3)

C.P.

Days Discharge Type Update Code

Monthly ResultsParameter CodeFLOWS

File No. Works Number Data PeriodMonth Year

(103 m3)

(hours)

(hours)

TKN

Total Phosphorus

(mg/L)

(mg/L)

(mg/L)

(mg/L)

Duration

Secondary Bypass Volume

(mg/L)

FINAL EFFLUENTBOD5 (mg/L)

Ammonia + Ammonium (mg/L)

Suspended Solids (mg/L)

Chlorine Residual - (mg/L as Cl2)

Total Phosphorus (mg/L)

DISINFECTION

Chlorine Used - (kg as Cl2)



Operating Authority

Chlorine Dosage - (mg/L as Cl2)

Mailing Address:

Loyalist Township


Loyalist Township

Bath Sewage Treatment Plant

50 Sir John Johnson Dr, Bath, ON, K0H 1G0

Municipality:

Project Name:

Mailing Address:

TKN

FIGURE 7. QUARTERLY REPORTS

mailto:[email protected]

14. C

ompl

aint

s Ar

isin

g fro

m O

pera

tions

of t

he W

orks

37


14. Complaints Arising from Operations of the Works Loyalist Township received eight complaints for the collection system of Amherstview WPCP. Six of them are considered to be private issues and no further action was required by the Township. Two of them was due to odours – one of them in the springtime when farmers applied fertilizer on their land. For the other one in September no apparent reason could be found. The costumer was asked to call the Township as soon as the smell is noticed again, to allow for immediate investigation. No additional phone call was received, so no further action was required.

Two complaints were received for the sewage collection system in Bath. Both were due to private sewer backups and no further action was required by the Township.

TABLE 15. REQUESTS RECEIVED BY THE TOWNSHIP

Request ID Entry Date Street Village Issue Responsibility SR-1230 10/08/2019 Havard Place Amherstview Sewer - Blockage Private SR-0536 16/07/2019 Mortensen Dr Amherstview Sewer - Blockage Private R0664-19 22/05/2019 Amherst Dr Amherstview Sewer - Odour (fertilizer) Private

SR-1105 23/09/2019 Amherst Dr Amherstview Sewer - Odour No able to determine

R0386-19 27/03/2019 Oxford Cr Amherstview Sewer - Blockage Private R0532-19 29/04/2019 Princeton Pl Amherstview Sewer - Blockage Private R0684-19 24/05/2019 County Rd 6 Odessa Sewer - Blockage Private R0120-19 30/01/2019 Centre St Odessa Sewer - Blockage Private R0751-19 07/06/2019 Davy St Bath Sewer - Blockage Private SR-1296 16/10/2019 Main St Bath Sewer - Blockage Private

38


15. M

aint

enan

ce o

n M

ajor

Stru

ctur

e &E

quip

men

t

Major Structure and equipment properly maintained

15. Maintenance on Major Structure &Equipment Amherstview WPCP:

This section also includes modifications completed as per the ECA’s Schedule B Section 3:

Semi-annual preventive maintenance program on all major equipment

Replacement of the raw sampler Replacement of the final effluent flow meter unit Replacement of the WAS flow meter with a Krohne flow

meter Sealing of the biofilter and ATAD Replacement of sensors (ORP) and installing a cabinet

fan (ATAD) Replacement and maintenance of a motor (Biofilter) Replacement of check valves at the RAS pumps Maintenance of the north aeration cell Replace both bearings on Blower 2 New seal cartridges gaskets on Booster Pump 2 New drive sprocket on north clarifier longitudinal

collector New high-level float on perimeter sump pump pit New sheaves and drive belt on MAU-1

Bath STP: Semi-annual preventive maintenance program on all

major equipment Replaced motor at blower 1 (aeration) Coating of the large clarifier effluent weir Grinder replacement Cleaned and serviced raw pump D & E check valves New start/stop switch for sludge pump 2 New high-level float for large digester

16. A

ppen

dix

39


16. Appendix

TAB

LE A

. AM

HE

RS

TVIE

W W

PC

P -

SLU

DG

E S

AM

PLI

NG

RE

SU

LTS

- 20

19

40


16. A

ppen

dix

TABLE B. REGULATED METALS AND PATHOGENS CONCENTRATIONS AMHERSTVIEW WPCP – 2019

16. A

ppen

dix

41


TABLE C. HAULED SLUDGE SAMPLING RESULTS BATH STP 2019

42


16. A

ppen

dix

TABLE D. REGULATED METALS AND PATHOGENS CONCENTRATION – BATH STP2019

16. A

ppen

dix

43


TABLE D. REGULATED METALS AND PATHOGENS CONCENTRATION – BATH STP2019 (CONT’D)

44


17. R

egul

atio

ns, R

efer

ence

s &

Key

Con

tact

s

17. Regulations, References & Key Contacts REGULATIONS &REFERENCES

Environmental Assessment Act (EAA), Ontario Water Resources Act (OWRA), Clean Water Act (CWA) Nutrient Management Act (NMA) Environmental Protection Act (EPA) Environmental Bill of Rights, 1993 (EBR) Fisheries Act, 1985 MECP (www.ontario.ca) Canadian Water and Wastewater Association Ontario Water and Wastewater Certification Office (www.owwco.ca)

KEY CONTACTS

For further information or clarification on this report or a related topic or if there are any questions regarding the information contained in this report, please contact:

Ms. MJ Merritt, P.Eng. Director of Economic Growth and Development Services Phone: (613) 386-7351 ext. 137 Fax: (613) 386-3833 E-mail: [email protected] Ms. Sheila Buck Utilities Manager Phone: (613) 386-7351 ext. 139 Fax: (613) 386-3833 E-mail: [email protected]

Ms. Birgit Piberhofer, C.Chem., EIT Utilities Compliance Supervisor Phone:(613) 386-7351 ext. 152 Fax: (613) 386-3833 E-mail: [email protected]

http://www.ontario.ca/

http://www.owwco.ca/

mailto:[email protected]

stp annual report 2019 - loyalist

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