TO\MN OF MATTA\ryA

2019

WASTEWATERTREATMENT &

COLLECTION SYSTEM

RTPORT

Prepared on January 10, 2020

Page 1 of 8

Mattawa Class l Wastewater Lagoon System

The Town of Mattawa owns the Mattawa Lagoon Sewage Treatment Plant and the Mattawa WastewaterCollection System. OCWA operates the Mattawa Lagoon Sewage Treatment Plant, wh¡le The Town ofMattawa maintains the Mattawa Wastewater Collection System. The Lagoon is a Class L WastewaterTreatment Plant, and san¡tary system is a Class l Wastewater Collection System. The Lagoon operates underthe Ministry of Environment, Conservation and Parks Certificate of Approval number 3-11L5-91-926. The

works number on file is 1L0000436.

The Lagoon accepts sanitary discharge from a network of sewer mains and pumping stations within thephysical boundary of the Town of Mattawa only. All influent entering the lagoon passes through a magnetic

flow meter, after which the flow can be diverted to either the spare maintenance / emergency cell (clay

lined), or the primary or secondary lagoon cell depending on requirements.

Both the primary and secondary lagoon cells are plastic lined and aerated, with 80% of the supplied air being

discharged into the primary cell. Alum is injected into the control box for phosphorous removal, where flowfrom cell #1 is sent over to cell #2. This location provides good mixing, and is ideally suited for the system.

Effluent is continually discharged from the final control box at the end of cell #2, where it passes through a

chamber of Ultra-Violet lights before finally discharging into the Ottawa River.

Sludge levels in the lagoons are checked regularly (typically annually) and the minor volume that has

settled since the last full cleaning means that removal is not expected for many years. Current levels

indicate an average of 2-4 inches.

Mattawa Class l Wastewater Collection System (WWCS)

The Mattawa WWCS is comprised of approximately 15 kilometers of sewer mains, 4.4 kilometers offorcemains, and a total of seven (7) sewage lift stations that receive gravity fed sewage and pump rawsewage through the forcemains to the Lagoon system for waste water treatment.

Page 2 of 8

Flow Assessment

Rated Capacity:

Connected Population

20L9 Avg. Daily Flow

Total Flow lor 2OI9

Jenüâry Februery Me.ch April

Avg. Daily Design Flow

Avg. 1,564 mt ¡ day with a peak flow of 5,702 m3 / day

Approximately 2,I50 people

1,005 m3 / Day

366,74! m3

As the chart below indicates, peak flow single day limit has not been exceeded during 20L9, and the average

daily flow is well below the average daily design flow. The magnetic flow meter was calibrated on April 26,

20L9.

Mattawa Lagoon lnfluent Flow: 20196000

5000

4000

3000

2ûO

1000

l!ôrôEIt

oÉ,

I-9

November December

+Avg. De¡ly Flow

Sampling & Testing Requirements

EFFIUENT PARAMETER MEASUREMENT FREQUENCY SAMPLE TYPE

5 day BiochemicalOxygen Demand Monthly Composite

Total Suspended Solids Monthly Composite

Total Phosphorus Weekly Composite

Ammonia (expressed as N) Weekly Composite

Tota I Residual Chlorine* As Required* Grab*

Total Kjeldahl Nitrogen Monthly Composite

Nitrite + Nitrate Monthly Composite

Fecal Coliforms Monthly Grab

Fecal Streptococcus Monthly Grab

*Effluent is not chlorinated, so there is no requirement to collect Total Residual Chlorine samples.Page 3 of 8

Mey ,une July August September Octoter

-.+-'Peak Des¡gn Flow ..1-Monlthly Peak Flow

EFFLUENT

PARAMETER

Compliance

Limit lSinSte

Year MaximumYearlyAverage

5 day Biochemical

Oxygen Demand

30me/L(12 month avg.) [a.s

ms /L (August)8.1mglL

Suspended Solids 30mg/L(L2 month avg.)

I2.3 ms / L lzs.s

ms /L (August)

Total Phosphorus 2.5mg/L(monthly avg.)

lr.somg/L(March)lVtonthlV

Average Maximum

I

1.09 mg / L

Annual Monitoring Data Summary & Effluent Quality Control

a. Compliance Sampling Results:

b. Compliance LoadingCalculations:

EFFLUENT

PARAMETER

Compliance

[imit and considerations

Results

5 day Biochemical

Oxygen Demand

46.92 Ke/ daV f rom 72 month average

multiplied by 12 month average flow8.L0 Kg / day

Suspended Solids 46.92 Kg/ day from 12 month average

multiplied by 12 month average flow72.33 Kg / day

Total Phosphorus 3.91 Kg/day from monthly average

multipl¡ed by avg. daily flow for month

*L.05 Kg / day

(yearly avg.)

*No month in 2019 exceeded the Total Phosphorous loading limit. The average loading for 12

months was 1.05 Kg/day, well below the compliance limit. The maximum month was 2.09 Kg/day

(see Appendix A-20L9 Porometer Averoge Calculotionsl.

c. Additional Sampling Results:

EFFLUENT PARAMETER Range Units

pH 6.77 -7.78 N/A

Fecal coliforms < L0- 3900 cfu/L00 mL

Fecal Strep < L0- 4400 cfulL00 mL

Total Kjeldahl Nitrogen 5.10-23.00 mc/ L

Nitrite + Nitrate < L.O -2.97 mg/ L

Ammonia 0.10-24.80 mgl L

(See Appendix A and Appendix B for 2O19 influent and effluent sample results.)

Page 4 of 8

By-passes and Spills

a. Lagoon: There were no lagoon by-passes/overflows in 2019.

b. Collection System: There were three reported sewage lift station bypasses in 2019

#1Type of lncident: Bypass

Location: 451 Bissette Sewage L¡ft StationSAC Ref No.: 903287Start Date & Time: May 9, 2019 at L800 hoursTermination: May t4,2Ot9 at 0650 hoursDuration: 92 hoursApproximate volume: 21,000 m3

Details: Dam upstream opened releasing heavy water flows causing Ottawa River to breach its banks, plus

heavy rains. W¡th both pumps operat¡ng at the lift station it is just not able to keep up with the influent flowrate, which is high due to precipitation.Receiver: Ottawa RiverActions: Sampled and monitored wastewater. Refer to Append¡x Cfor bypass sample results.Reporting: Verbal & written reports to MOE SAC and MOH, faxed to EC as required, also notification made tolocal MECP inspector Erin Spires.

#2Type of lncident: Bypass

Location: LL0L Bissette Sewage Lift StationSAC Ref No.: 903320Start Date & Time: May 10, 2019 at 1230 hoursTermination: May L0,2019 at 1855 hoursDuration: 80 minApproximate volume: 1.5L m3

Details: Ottawa River overflowing banks causing sewer system to back up. With both pumps operating at thelift station ¡t is just not able to keep up with the influent flow rate, which is high due to prec¡pitation.Receiver: Ottawa RiverActions: Sampled and monitored wastewater. Refer to Appendix Cfor bypass sample results.Reporting: Verbal & written reports to MOE SAC and MOH, faxed to EC as required, also notification made tolocal MECP inspector Erin Spires.

#3Type of lncident: Bypass

Location: 601 McKenzie Sewage Lift StationSAC Ref No.: 322L-BC35GH

Start Date & Time: May 11, 2019 at L430 hoursTermination: May 1l,2OI9 at 1630 hoursDuration: 120 minApproximate volume: 4.L6 m3

Details: Pumps faulting due to excessive run times from extreme high water levels, which is high due to heavyprecipitation.Receiver: Ottawa RiverActions: Monitored wastewater.Reporting: Verbal & written reports to MOE SAC and MOH, faxed to EC as required, also notification made tolocal MECP inspector Erin Spires.

Page 5 of 8

It should be noted that in the spring of 2079, the area received record rain fall and the dam upstream openedreleasingheavywaterflowscausingtherivertobreachitbanks. Thisiswhatledtoastateof emergencyforthe Town of Mattawa. Both OCWA and the Town worked tirelessly during the time, installing berms toprevent the river from entering the sewage lift stations and working around the clock to minimize the bypassesas much as physically possible.

Contingency Manual & Procedures

Operators follow the "Operations Brief for Sewage Works Upgrading Manual" that was produced

following the sewage works upgrade in 1992. This manual was updated upon OCWA becoming

ORO/Operating Authority of the Wastewater Lagoon and Collection System. A Facility Emergency Plan

(FEP) binder was produced to provide additional direction; including, standard operating procedures

(SOP) and contingencies.

Repairs and Maintenance

a. Lagoon and ControlBuilding

Regular maintenance at the lagoon and control building included monthly generator testing, ensuring

automatic power switch-over, blower motor ma¡ntenance (changing oils, belts, etc.) and cleaning of the UV

lights and discharge chamber. The lights were cleaned monthly during the spring, summer and fall months,

and all bulbs and lamp sleeves were replaced in the fall of 2018. Normal practice is to clean the lamp sleeves

monthly during the spring, summer and fall months and replace them every two years and as necessary.

The malfunction of the UV system control board that we experienced in August of 20L6 continued to plague

us well into 2018, despite several onsite visits from H2Flow technicians. After replacing every cr¡tical

component in the UV system we finally achieved a proper communication between the UV lamps and the

control board located in the Lagoon building. Throughout the problems, the UV lights continued to work as

intended, giving us good disinfection of the effluent during the season when users downstream are active.

Operators verified the UV lights were operational with visual confirmation while the communications link

remained non-functional.

The main lagoon control box (where all sewage enters the primary lagoon cell) was isolated and cleaned with

a vacuum truck, removing all rags and heavy grit. This is an annual practice.

Regular inspections of the berms around the lagoon were conducted, with the roadway around the cells

maintained by cutting the grass, removing debris, etc.

Lagoon level control boxes were inspected, and levels were adjusted before winter to account for ice cover

A new PLC/HMl was purchased and installed to trend flows and capture daily flows / totalizer readings on a

midnight to midnight basis. Unfortunately, the flow meter outputs were not working properly to be able toconnect to it. Council authorized the purchase of a new flow meter in December of 2017, and at the time ofthis report the new flow meter had already arrived and was installed in the spring of 20L8. New flow meter

installed and calibrated on April 27,20L8. Annual verification/cal¡bration completed on April 26,2019.Lightning strike caused damage to the outputs of the flow meter in 20L9. Flow meter is still working as itshould, just no output signal from it, which doesn't allow for totalized readings on a midnight to midnight

basis. Readings being recorded onsite. The issue with the flow meter is being addressed as time perm¡ts.

Page 6 of I

New Outpost panel installed and alarm monitoring systems transferred to OCWA.

b. L¡ft stat¡ons and Collection System

The three year flushing and CCTV inspection program was completed during the third year in 20L8,

providing GPS points of allthe sanitary connections to the sewage mains. Last year's report incorrectly

reported the cost to be 560, 000 for the three year contract when in fact it is 590,000. The entire sanitary

system has now been flushed and CCW'd. Manhole repair continued through 2018 with several problematic

manhole structure repaired and/or refurbished. Almost all of the footage from the inspections showed thesanitary in good condition, with no major problems except for an old sanitary line than runs in an easement

where the new Long Term Care Home (LTCH) is currently being built. This short but cr¡tical section of old

eight inch asbestos cement sanitary pipe was replaced with the cooperation Hospital management team.

Approximately 160 meters of twelve inch plastic sewer pipe was installed at a cost of approximately

s21o,ooo.

Once again all seven lift stations were pumped down and all debris (grit/rags) was vacuumed out using a

vacuum excavator. Xylem inspected and serviced impellors/ wear rings on pumps at all seven sewage liftstations. Additionally, the lift stations are flushed severaltimes a year by operators using high pressure

hoses, and then cleaned by manually removing rags and debris.

Purchase of a portable generator to help run the sewage lift stations that do not have standby

generators. Currently, the electrical connections and panels are not installed. Plans are in place tocomplete panels and electrical connections upon receiving quotes from contractors.

Record Keeping

Operators attend the lagoon and control building on a daily basis from Monday to Friday, excluding holidays.

Regular observations are recorded in the Logbook. Xylem sewage lift stat¡on inspection findings are saved on

OCWA's public drive. Results from these inspections are included in the annual Capital and Major

Maintenance Recommendations Report that is provided to the Owner.

A summary of any effluent quality assurance or control measures undertaken during the report¡ng period;

The effluent parameters specified in the above tables a, b and c on page 4: are analyzed by an accredited

laboratory.

ln-house tests are conducted by licensed Operators for monitoring purposes using Standard Methods and thedata generated from these tests is used to determine the treatment efficiency while maintaining process

control. All in-house monitoring equipment is calibrated based on the manufactures recommendations.

Conclusion

All effluent sample results were at, or below compliance requirements. All effluent sample results were at,

or below the effluent quality objectives, with the exception of Fecal Coliforms. Often during the wintermonths the effluent quality objedive for FecalColiforms was not always achieved in single sample analysis

The onset of winter and colder temperatures slows the natural biological processes that help the UV

Page 7 of 8

disinfection system to control this parameter. Good disinfection is achieved during the summer season

when recreational activities are expected downstream of thedischarge. See Appendix I for individual

sample results.

Regular deliveries of Alum ensure dosage targets are met, and phosphorus levels in the effluent rema¡n

below the effluent objectives.

All indications are that the Mattawa Lagoons provide adequate treatment for the size of the

municipality and the raw water parameters.

Certification

lcertifythatthe information in this document and all attachments are correct, accurate and

complete to the best of my knowledge.

Joshua Gravelle

Process & Compliance Technician

Ontario Clean Water Agency

705-568-7000

January 70,2O2O

Page 8 of 8

DaysReading #lReading #2Total Flow *

Peak FlowM3 / Day

APPENDIX A--2019 Parameter Averaqe GalculationsJanuary Februarv March Aoril Mav June Julv

30 30

* = measured at Sewage Treatment Plant Meter

January-O9-20

Auqust September October November December31 30 31 30 3131 31

58052160320322682.0

828.0

731.7

55560958052124v2.4

1316.0

830.4

5331 48555609

22461 .O

942.0

724.6

4349871 4705301 4940381 514219470530t 494038t 514219t 53314835543.0t 23508.0t 20181.0t 18929.0

981.01 687.0 t I 't 36.0 t 824.Ot

631.01184.S1 758.31 651.01

350971434987

84016.04569.0

2710.2

305033350971

45938.03423.O

1531.3

282277305033

22756.O1 161 .0

734.1

26079528227721482.0

1228.0

767.2

236462260795

24333.01124.0

784.9

BOD. TreatedBOD. Raw

CBOD* *"." Treated

TSS Raw

TP Raw

Loading Average = 46.92 Kgld

Loading Average = 46.92Kgld

ln September 2018, upgrades were completed to allow for 24 hour flow measurements. lssues with HMI for 2019 causing inaccurate read¡ngs. Valuesfrom actual flow meter readings entered for 2019 as they are the most accurate.

5.1

117.3

3.3

6.2128.8

5.4

4.6144.5

4.2

8.5

93.74.2

18.5

160.9

6.5

8.9133.5

4.0

81.1

9.351.1

11.4

151.9

8.1

153.2

7.1

132.8

5.0

102.9

6.5113.0

2.97

23.0Nitrate

Nitrate & Nitrite<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL2.97

<RDL<RDL

<RDL<RDL

<RDL<RDL

<RDL<RDL

Ammon¡a 17.4017.3018.6017.8020.30

17.0020.7018.2017.10

8.5818.9020.5022.20

22.4014.5014.0011.3010.30

9.966.734.074.97

7.708.659.6213.40

11.4014.4014.3014.0013.60

0.982.420.101.78

3.946.3114.1011.90

15.2017.20'17.90

20.3021.30

19.3019.9024.8017.70

18.3015.2020.5019.2021.60

Avq Ammonia 18.28 18.25 17.55 14.50 6.43 9.84 13.54 1.32 9.06 r 8.38 20.43 18.96

2.2120.00

2.88

15.6

3.8149.0

2.83

14.2

17.398.8

3.93

5.10

25.5245.0

2.98

8.4

13.5

3.09

10.2

6.2

2.29

7.7

20.8

0.99

10.1

14.5

3.65

18.9

12.5

3.94

18.3

14.O't '13.0

3.36

19.3

'SS Treated I '10.5

133.0

3.42

KN I 16.50

PhospWeekly

TestResults

1.241.261.321.351.43

1.3E

1.501.551.69

1.521.50't.61

1.62

't.58't.69

1.401.071.'10

1.060.560.51

0.62

1.141.021.031.23

1.150.891.01

0.890.78

0.610.550.550.72

0.891.02'1.00

1.06

0.770.610.730.8s0.89

0.870.860.890.93

't.05

1.151.090.792.25

Avg Phosp.: 1.32 1.53 1.56 1.37 0.69 1.11 0.94 0.61 0.99 0.77 0.89 1.27Monthly PhosLoading: Kg/d 't.04 1.17 l.l5 2.09 1.86 1.31 0.72 0.40 0.63 0.s6 o.74 0.93

nual BOD58.10 Kg/day

366,741.0L Annual Avg Daily flow (M3/Day):

BOD5 Annual Average:TSS Annual Average:

Phosphorous Annual Average:

1004.8 M3/Day

8.1 mg/L

12.3 mglL1.09 mg/L4.72 mglL

nual TSS Loading: 12.33

cBo Annual Average:

NOTES:

Appendix B - Effluent Weekly Samples

6001 3001 500

1 000400100400

> 20001525100

90< 10< 10

10

1010

<10

< 10

20< 10< 10

< 10<10< 10< 10

0 < 10< 10< 10

70120

10

10

10

20

3003201002225

21

weeklycfu/'t00 ml

weeklycfu/100 ml

3503006251125

310039002900

4400335031 50

235021501250

6',12.7 3397.4 1273.8 423.4 497.0 25.9 10.0 11.9 10.0 24.3 11.9 339.1

70085011751 500

6003005075

99057550

10

10

10

20<10<10<10

10

10

10

10

10

10

< 10< 10< 10

10

30

10

10<10

20

12012040100775

889.2 3691.6 2086.3 248.4 154.5 12.6 11.5 10.0 10.0 12.5 1 1.9 134.97.477.477.447.267.34

7.077.387.417.35

7.287.487.477.427.65

7.737.627.567.05

7.327.387.447.50

7.567.607.547.25

7.707.687.787.70

7.597.587.557.37

7.49 7.41 7.52 7.17 7.39 7.69 7.67 7.55

weekly7

7.467.307.337.40

7.697.677.65

7.247.477.51

6.777.477.45

7.31

7.327.35

7.447.77777.707.497.357.237.307.917.637.70pH Rawmonthly

Appendix C

Bypass Sample Results

t\l Near lrlorth 1of1.Accred¡ted by CALA to ISOÍEC 17025 for specific tests

. L¡cenced by the Onlario l\,linisûy ofthe Environment, Conservat¡on and Parks

for Specif¡c Drinking Water Andyses

fl Environmental Services1 1-191 BOOTH RD, NORTH BAY ON P.lA 4K3TEL (705) 497 0550 FAX (705) 497 0549Visit us @ NêarNorthLabs.ca

Job 117316

Laboratories Inc.

Statement of Analytical Results - Final

Mattawa, Town ofJosh DewaalPO BOX 390, 1276 MILL ST, MATTAWA ON POH 1VO

Lab lD 19E0590

CollectionDate 2019-May-09Collection Time 18:40

Matrix Waste WaterDescription 45lBissette

Sewage bypass

Ammonia (as N)1 2.98*

Biological OxygenDemand

30.3

6.82

Phos, tot (as P) 0.46

Total SuspendedSolidsl

28.3

Escherichia colil >200000*

Mattawa Sewage

pH'

Criteria Not Regulated

Sampler Tim Fraser

Received 2019 May 10 10:49

Turn Around 7 Day

MDL / UnitsRDL

0.10 mg/L

Method CompletedAnalyst

Photometric 2019-May-10 RR

0.86 mg/L 5 day 2019-May-15 DRincubation

pH Unit Probe 2019-May-10 YL

0.008 mg/L Photometric 20'19-May-14 RR

1.26 mg/L Gravimetric 2019-May-13 SM

1000 cfu/1 00mL Membrane 2019-May-13 DRf¡ltration

Fr¡day E.col¡ surcharge

MDL denotes Mehod Deteclion Limit, and expresses the lowest concentration that can be detected for $e analysis

[R] lndiætes Reported Detec{ion Limit (RDL) used in place of an MDL* Sample diluted prior to analysis

' lndicates an accredited test by Near Norfi Laboratories lnc. to CALA to lSO/lEC 17025. " lndicates analyses were subconbacted to an aæredited laboratory.

he Environment, Conservation and Parks protoæls.

QC repoÍ available upon request Sample(s) received in good condition, unless oherwise noted.

test / reprovision of he serviæ or a refund of $e fee paid.

2019 May 15

Renée Roy,

B 2019 May'15 16:49 This document may be copied only in its entirety. Results relate only to the item(s) tested.

Job 11?316IfliltiluIilililililtlliltiltilil]

t\lil;*1il,3.1ll'I ofl

'Accredited by CALA to ISO/IEC 17025 for speclfic tests. Licenced by the Ontario M¡nistry of the Environment, Conservat¡on and Parks

for Specilic Drinking Water Analyses

@ Environmental Services1,1-191 BOOTH RD, NORTH BAY ON P1A 4K3TEL (705) 497 0550 FAX (705) 497 0s49Visit us @ NearNorthLabs.ca

Job 117318Statement of Analytical Results - Final

Mattawa, Town ofJoshua DeWaalPO BOX 390, 1276 MILL ST, MATTAWA ON POH 1VO

Mattawa Sewage Bypass

Lab lDCollection DateCollection Time

MatrixDescription

1 980592201 9-May-1 0

13:16Waste Water1 102 Bissette

SewageBypass

Criteria Not Regulated

Sampler Tim Fraser

Received 2019 May 1Q 17:47

Turn Around 7 Day

MDL / UnitsRDL

0.10 mg/L

Method Completed Analyst

Photometric 2019-May-16 RR

0.86 mg/L 5 day 201 9-May-1 5 DRincubation

pH Unit Probe 2019-May-13 YL

0.008 mg/L Photometric 2019-May-14 RR

1.26 mg/L Gravimetric 2019-May-17 SM

1 000 cfu/1 00mL Membrane 2019-May-13 DRfiltration

Ammonia (as N)1 2.61*

Biological OxygenDemand

32.6

pHt 6.54

Phos, tot (as P)

Total SuspendedSolidsl

0.47 i

37.1

Escherichia colil >200000*

Friday/After Hours E.col¡ submission

MDL denotes Method Detecüon Limit, and expresses he lowest concenfation hat can be detected for he analysis

[R] lndicates Reported Detection Limit (RDL) used in place of an MDL.

Sample diluted prior to analysis

' lndicates an accredited test by Near North Laboratories lnc. to CALA to lSo/lEC 17025. " lndicates analyses were subcontracted to an accredited laboratory.

the Environment, Conservation and Parks protocols.

QC report available upon lequest. Sample(s) received in good condition, unless otheruise noted.

test / re-provision of the service or a refund of the fee paid.

2019 May 17

Renée Roy, ity er

g 2019 May 17 15:42 This document may be copied only in its entirety. Results relate only to the item(s) testedilob 117318

Ifliltiltililtilililtlil]ilillrilill