tsr - co.kent.de.us

r:., iil "jtsroal

Wastewater FacilitiesPhone: 302-335-6000

Fax: 302-335-0365

Thent @ounty

Aepartment of euflfic I,lorfuDivisbn of fEngineering

Phone: 302-744-2430 Fax:302_736_2100

KENT COUNTY REGIONAL SEWER ADVISORY BOARDFOUR HUNDRED TWENTY SEVENTH (427th) MEETTNG

August 4,2021at 5:00 PM

Kent CountyAdministrative Complex

555 Bay RoadDover, DE 19901

(Handicapped Accessibte)www.co.kent.de.us

SAB members will meet in the Levy Court Chsmber. llhile the pablic is welcome to aftend, capacitlt is limited due tosocial clistancing.

Join the meeting via Webex by going to

Or By phone, by calling l-409-418-9388Meeting number (access code): # l7g 002 3121

CALL TO ORDER

ROLL CALL AND DETERMINATION OF QUORUM

MINUTES OF'THE PREVIOUS MEETING AND ACTION THEREOF

R-EPORTS OF OFFICERS, COMMITTEES AND STAFF'

A. OPERATIONS AND MAINTENANCE REPORTl. April,202l2. May,20213. June,2021

ENVIRONMENTAL PROGRAMS REPORT1. April,20212. May,20213. June,2021

C. SEWER ADVISORY BOARD _ LEVY COURT ACTIONS

D. OLD BUSINESS

E. NEW BUSINESS1' Whispering Pines Mobile Home Park Proposed Sewer Expansion (KCSSD - Double Run

Area)

ADJOURNMENT

B

COMMENTS

POSTED: Jily 26,2021TAKEDOWN: Upon ReplacementV:\PublicWorks\SAB\Agendas\202 I \SAB Agenda 427 _ 0804202l.doc

MEMBERS PRESENTRodney SlaughterGerald PepperEdward StrouseWilliam Yonker, ChairmanRobert HaynesLee DeanEdward WelchHarold ScottMatthew JordanBryan AshbyJason LyonMike SvabyJason McNatt

MEMBERS ABSENTJames PuddicombeBill Evans

OTHERS PRESENTDiana GoltCathy MooreMark Kennedy

Kent County

Oepartment of Aufitic l,lor(g

REPRESENTATIVEI't District2nd District3'd District4th District5th District6th DistrictAt LargeCamden-WyomingDAFBDNREC - AItDoverMilfordSmyrna

REPRESENTATIVEMilford - AltSmyma - Alt

Kent County Public WorksKent County Public WorksKent County IT

KENT COUNTY REGIONAL SEWER ADVISORY BOARD (SAB)FOUR HUNDRED TWENTY SIXTY (426TH) MEETING MINUTES

May 5, 2021,5:00 PMKent County Levy Court Complex

555 Bay Road, Levy Court Chamberso Dover, DE

V:\PublicWorks\SAB\MinutesV02 l\SAB Minutes #426 - 05052021

May 5,2021SAB Minutes 426thPage 2 of 4

INSTRUCTIONS FOR TELECONFERENCE: Prior to the fficial start of the meeting, Mrs. Goltintroduced herself and reviewed the instructions for the teleconference participants. The statement notedthat this was a public meeting whichwas being recorded and described the public participation process.Roll call was conducted.

ROLL CALL AI\D DETERMINATION OF OUORUMThe meeting was called to order by Mr. Yonker, Chair at 5:01pm and it was determined that there was aquorum present.

Approval of Meeting Minutes - Mr. Yonker asked if everyone had reviewed the minutes and asked forquestions or comments. No corrections, comments or questions were noted. A motion was made by Mr.Dean and seconded by Mr. Slaughter to accept the meeting minutes of March 3, 2021 as presented.Motion carried unanimously.

REPORTS OF' OF'F'ICERS. OMMITTEES AND STAF'F'

OPERATIONS AND MAINTENANCE REPORT(S)Operations und Maintenance Report - February,202l - Mrs. Golt reported that there were no odorcomplaints in February and one power outage. There were two sanitary sewer overflows; the mostsignificant one occurred at Carroll's Plaza where we had a break in 30" forcemain. Spill volume from theinitial break and through the repair was estimated at 1 .75 to 2.6 million gallons. The second overflowoccurred at 4167 South Dupont Boulevard due to a pump failure; 2,000 gallons spilled. Mrs. Golt notedthat there were 17 permit exceedances for the daily maximum limits in February. All were associatedwith substantial rainfall events. There were also two exceedances of daily average limits for TSS andminimal removal efficiency for TSS; the minimum of 92.5Yo was not achieved for the month. Mrs. Goltreported that for Biosolids, Plant Operations is working Saturdays (6 days per week). We de-ragged thewaterman weirs and processed 442 Mgal in February. We repaired the IIV units as needed and piggedthe DSWA forcemain and repaired a gravity line at 65 Fairline Drive. Electrical staff updated theirdefensive driving certifications. Work was completed at Pump Stations 4,25,and 7. We processed 8.7Mgal sludge into biosolids. The month of February was very wet and rainy and we were unable to haulany product to area farms.

Mr. Yonker asked for any questions/comments and if none, asked for a motion to accept the February,2021 Operations and Maintenance report. Motion made by Mr. Welch and seconded by Mr. Strouse toaccept the report. Motion carried unanimously.

Operations and Maintenance Report - March, 2021- Mrs. Golt reported no odor complaints or poweroutages in March. There was one sanitary sewer overflow that occurred on March 24 atPump Station 3,Water Street, Dover. It was attributed to high flows from the excessive rain and the spill was estimated at8,000 gallons. The wastewater treatment plant experienced nine exceedances of the daily maximums forTSS during the month of March. All of the exceedances were associated with excessive rainfall events as

well as basin and clarifier issues. In addition, there were two exceedances of daily average limits for TSSand the minimum removal efficiency of TSS of 89.1 was below the95.5% achievement limit. Biosolidsstaff continued to work on Saturdays. We completed the February DMR, and continued repairing UVunits. We are checking the DSWA forcemain every 2-3 weeks and pigging as necessary to ensure goodflows. Work was completed at Pump Stations 2 and 7, Lift Stations 2 and 5a by the electrical crew. Weprocessed 8.2Mgalsludge and biosolids and hauled and spread 2,180 tons of biosolids on area fields.

Mr. Yonker asked for any questions/comments and if none, asked for a motion to accept the March, 2021Operations and Maintenance report. Motion made by Mr. Dean and seconded by Mr. Slaughter to acceptthe report. Motion carried unanimously.

V:\PublicWorks\SAB\Minutes\202 l\SAB Minutes #426 - 05052021

May 5,2021SAB Minutes 426thPage 3 of 4

ENVIRONMENTAL PROGRAMS REPORT(S)Environmental Programs Report - February,202l - Mrs. Golt reported that staff is working on theEPA Annual Pretreatment Report which is due on March 31, 2021. The applications for re-issuance ofSIU (Significant Industrial User) permits have been received. We continue monitoring the SeptageHauler Program and collecting the log sheets from the haulers at the pump station discharge locations.The FOG Program issued 2l permits to food service establishments (listed in the report), and theremaining 51 submissions for the Tier II reporting on the generators were made and submitted toDNREC.

Mr. Yonker asked for any questions/comments and if none. Mr. Svaby asked if there was more specificdata available on delinquent hauler accounts. He wondered if it was because there are more people athome and septics are failing quicker. Mrs. Golt responded that the residents do not pay directly to theCounty; the haulers self-pay. Is there any sense as to why they are getting behind or that just normal?Mrs. Golt responded that it was normal and noted that some haulers are repeat offenders. Mr. Yonkerasked if there were any other questions or comments, if none asked for a motion to accept the February,2021 Environmental Programs Report. Motion made by Mr. Welch and seconded by Mr. Svaby to acceptthe report. Motion carried unanimously.

Environmental Programs Report - March, 2021 - Mrs. Golt reported that Amanda Lockerman joinedthe Environmental Programs staff as the new Environmental Technician I on March 3rd. The AnnualPretreatment report was finalized and submitted on March 30. Staff reviewed the Excel files for theIndustrial Users and set up new files for annual data for the next calendar year. On March 3 l, our newstaff member was introduced to staff at the Energy Center of Dover, Dover Wipes and Kraft Heinz andreceived a tour of the facilities. We continued collecting the hauler logsheets for the Septage Programand monitoring delinquencies. Both Environmental Technicians went to the hauler sites as part of theircross training. All Environmental staff participated in an 8-hour FOG webinar on March 7.Environmental Technicians inspected grease traps at two different types of food service facilities. Foodservice facilities and FOG traps were inspected and permitted for the list of facilities noted in the report.

Mr. Yonker asked for any questions/comments and if none, asked for a motion to accept the March, 2021Environmental Programs Report. Motion made by Mr. Strouse and seconded by Mr. Svaby to accept thereport. Motion carried unanimously.

SEWER ADVISORY .LEVY COIIRT ACTIONSMrs. Golt reported that at the March business meeting, that a public hearing was held for sanitary sewerextensions: Ching property, Hertrich properties, the Lands of Joan Seaver. All these items went to LevyCourt and the resolutions were adopted for those extensions.

Mr. Yonker noted that no motion was necessary.

V:\PublicWorks\SAB\MinutesV02 1\SAB Minutes #426 - 05052021

May 5,2021SAB Minutes 426thPage 4 of4

OLD BUSINESS

N/A

NEW BUSINESS

1. fS,SDl Proposed Extensions - Various Sewer Areas - Mrs. Golt reported that the EngineeringDivision staff performed an audit of our sewer customers and district boundaries and found that therewere several properties which were administratively permitted to connect to county sewer.Previously each petitioned for connection, they submitted a letter for inclusion. The extensions wererequested due to failing septic or new construction adjacent to existing county sewer service. Theproperties are located throughout the county in various sewer areas. The properties which haveconnected to county sewer have obtained permits, paid all fees associated with the connection and arereceiving sewer bills. Out of the eight properties listed on the report, only two are not connectedbased on the date that the memo was prepared. There are eight properties listed, and we are seeking adistrict extension to formally add them to the sewer district. There are maps in the report that depictthat each property. The properties were administratively added and need to be formally added toKent County Sewage Disposal District #1. There is adequate capacity in the sewer system toaccommodate the eight equivalent dwelling units. The properties are located on Pickering BeachRoad, Arthursville Road, four (4) on Barney Jenkins Road, Seven Hickories Road and PonderosaDrive. All of the applicants have formally agreed to be part of the Kent County Sewer DisposalDistrict #1. Based on the requests and subsequent analysis by staff, we recommend approval of theextension of the Kent County Sewage Disposal District #l.

Mr. Yonker asked if there were any questions or inquiries regarding the proposed sewer expansionand if none, asked for a motion to accept the proposal. Motion made by Mr. Welch and seconded byMr. Dean to accept. Motion carried unanimously.

COMMENTS

N/A

ADJOURNMENT - With no other comments, questions or business, Mr. Yonker requested a motion forAdjournment. A motion to adjourn was made by Mr. Dean and seconded by Mr. Svaby. Motion carriedunanimously. The meeting adjourned at 5:27 p.m.

V:\PublicWorks\SABWlinutes\202 l\SAB Minutes #426 - 05052021

J(ent Courtty

Deyartment of nuhftc ^lUorZ.s

MEMORANDUM

TO

DATE:

FROM

RE:

Iuly 26,2021

Sewer Advisory Board

Diana T. Golt, P.E., Public Works Director tr1ftF. James Burk, Environmental Programs Manafflr

Environmental Programs Report - April 2021

Industrial Pretreatment Program:a. Staff visited the sites of Significant Industrial Users (SIUs) for introduction of new staff and facility tours.

04/06/21Sea Watch 04121/2l Garrison Energy Center04107 /21 Perdue 04122121 McKee Run Facility (Power plant is scheduled to be decommissioned.)04/12/21DSWA

b. On April 20,2021, a sample was split with Seawatch.c. Staff reviewed SIU permits with expiration dates of June 30,2021. The new permits are to be issued before expiration

of existing permits.d. EEC submitted Final Reports and EPA Region 3 spreadsheet to the County. After review, the spreadsheet was

submitted to EPA for concurrence and approval.e. Staff organized records, file data and permits; scanned Spill and Stormwater Plans for SIU's; and entered monthly

SIU data.

f. Dental amalgam reports were reviewed. Staff sent letters and emails to dentists which have not complied with thereporting requirements. Several return responses were received.

2. Septage Hauler Program;a. From Monday through Friday, hauler log sheets were collected from PSI (Smyrna) and PS17 (Harrington) and were

faxed to Finance for billing. As soon as the Finance Department issues the monthly Aging Report, the Delinquenthaulers are contacted; four companies were contacted to bring their accounts current.

b. Notices were being sent to the Waste Haulers reminding them that their permits were up for renewal and to makearrangements to have their trucks inspected by the County.

3. FOG (Fats, Oils, and Grease) Program:a. Staff met several times with IT about set up of an online application process to be used by Food Service Facilities.b. The Food Service Facilities and FOG traps/ interceptors were inspected and permitted as follows:

4/011214/07/214/07121

4lt4/214/14/214/201214/23/214/23/214/28/214/301214130/21

(Dover)(Hanington)(Harrington)(Hanington)(Harrington)(Dover)(Hanington)(Magnolia)(Hanington)(Hanington)(Hanington)

Chaiyo Sushi & ThaiRudy's DinerStargate DinerChina KingPizzaKingLittle Creek GrillGranny Darmics KitchenMagnolia RestaurantHarrington Raceway & CasinoMain Street CafdSalty Wave Seafood Market

Environmental Programs Report includes the Industrial Pretreatment Program, the Fats, Oil & Grease Program, the SeptageHauler Program, and PCB compliance monitoring.

V:\PublicWorks\ENVIRO PROGRAMS\Monthly Report\2021 April Report-Enviro Programs 072621,doc

J(ent Courtty

Deyartment of fuOftc ^lMorQ"s

DATE:

FROM

TO

RE

July 26,2021


Diana T. Golt, P.8., Public Works Director /n-F. James Burk, Environmental Programs Manag{

Environmental Programs Report -llay 2021

Industrial Pretreatment Program:a. Administration: Staff continued to organize file records and to enter monthly SIU data in the tracking spreadsheet.

Staff reviewed proper procedures for PCB sampling/testing for DRBC. Condition of samplers was checked and iftubing was in bad condition, it was replaced. Quotes were obtained for a new portable pH Meter/electrode.

b. Staff training (2): 05/03/21 DRWA PFSA course & 05/13/21DPH Sampler/tester training coursec. Site visits & industry sampling:

05110/2IDSWA Pump Station & meter (Staff accompanied the Electrical Supervisor to the DSWA site.)05/ 12/21 Sea Watch (sampling)

d. Dental amalgam: Staff continued efforts to contact dentists about EPA dental amalgam requirements.

2. Septage Hauler Program:a. From Monday through Friday, hauler log sheets were collected from PSI (Smyrna) and PS17 (Hanington); log sheets

confirmed by review of video for 3 locations and faxed to Finance for billing. As soon as the Finance Departmentissues the monthly Aging Report, the Delinquent haulers are contacted.

b. Reminder notices were sent to the Waste Haulers about permit renewals and truck inspections. Appointments weremade to inspect waste hauler trucks; payments were received; and permits were issued if appropriate.

3. FOG (Fats, Oils, and Grease) Program:a. The Food Service Facilities and FOG haps/ interceptors were inspected and permitted as follows

5104121 PizzaHut (Smyrna)5105/21 PizzaHut (Camden)5/14/21 Byler's (Harrington)5ll4l2l Holiday Inn (Harrington)5ll4l21 Subway (Harrington)5/18/21 Tony's Sausage House (Dover)5/2ll2l Sister Caribbean (Milford)5/24121 Chuck E Cheese (Dover)5127121 Arena's (Milford)5/27/21 Benevento (Milford)

Environmental Programs Report includes the Industrial Pretreatment Program, the Fats, Oil & Grease Program,the Septage Hauler Program, and PCB compliance monitoring.

V:\PublicWorks\ENVIRO PROGRAMS\Monthly Report\2021 May Report-Enviro Programs 072621.doc

J(ent County

Deyartment of fuhftc ^l,VorQs

MEMORANDUM

TO

DATE:

FROM

RE:

July 26,2021


Diana T. Golt, P.E., Public Works Directordfi.F. James Burk, Environmental Programs Mailt$er

Environmental Programs Report - June202l

Industrial Pretreatment Program:a. Staff entered data from lab reports and data from Significant Industrial User (SIU) monthly reports into the tracking

spreadsheet. Staff corresponded with dentists for compliance with EPA dental amalgam regulations. Staff prepared adraft Industrial Waste Survey form.

b. Draft SIU permits were prepared by staff. Staff scheduled meetings with the SIUs to hand deliver the new permits.After review of the permits by the Director, revisions were completed. The new permits were printed and signed forhand delivery to each SIU. Each SIU acknowledged receipt of the permit by signing the hansmittal.

c. Staff training:06/03/21 EPA webinar on Strategies for handling high strength waste06/14/21EPA webinar on Enforcement Compliance History Online (ECHO)

d. Industry Sampling:06/21/21Sea Watch06/24/2lPerdue06/30/21 Energy Center Dover

2. Septage Hauler Program:a. From Monday through Friday, hauler log sheets were collected from PSI (Smyrna) and PSlT (Hanington); log data

was confirmed by review of video; and logs were faxed to Finance for billing. Based on the Aging Report fromFinance, the delinquent haulers are contacted.

b. All waste hauler permits expire on June 30,2021 . Appointments for the inspections of vehicles were scheduled. Newwaste hauler permits were issued after receipt of payment and completed application forms. Prior to issuance DEState hauler licenses were confirmed to be current. Calls were placed to the waste haulers who did not re-newpermits.

3. FOG (Fats, Oils, and Grease) Program: The Food Service Facilities and FOG traps/ interceptors were inspected andpermitted as follows:

611112l Sabor Latino (Milford)611112l Stones Bar &Grill (Harrington)6117/21 Mc Donald's (East Dover)611712l Mc Donald's (South Dover)611712l Mc Donald's (North Dover)6117121 Mc Donald's (Central Dover)611712l Mc Donald's (West Dover)

Environmental Programs Report includes the Industrial Pretreatment Program, the Fats, Oil & Grease Program, the SeptageHauler Program, and PCB compliance monitoring.

V:\PublicWorks\ENVIRO PROGRAMS\Monthly Report\2021 June Report-Enviro Programs 072621.doc

oaa

!!:,i::iI,

TGnt County(Dep artment of Au6 fic'(r/orQS

Wastew at er lF aci fitie s (Division

MEMORANDUMDate: May 21,2021

To: Sewer Advisory Board Members

From: Diana T. Golt, P.E., Public Works Director &William Vincent, Operations Supervisor - Astifif aciIities Superintendent

RE: KCRRRF OPERATIoNS & MInTBNANCE REPoRT

REPORTING PERIOD: April,2021

Odor Complaints: There were no odor complaints in April

Power Outages: There were no power outages in April.

SSOs & Permit Exceedances: There were no SSOs or permit exceedances in April.

PERFORMANCE DATA:

The April average flow of I 4.86 MGD is greater than the I 2 month average and the 1 8 month average shown in Table 1

The peak daily flow was 18.55 MGD. With the increase in precipitation, the averages are increasing slightly.

Table 1. Effluent Flow, MGD (Ave): "

Permit Basis " April 12 Month l8 Month

20 14.86 14.28 13.37

Table 2. KCRRRF Performance:

Notesa. A daily average discharge rate of 20 MGD was used by DNREC to determine mass-based effluent limits.

ParameterConcentration

In(Dailv Ave)

ConcentrationOut (Daily Avg)

Permit Limit(Daily Avg)

Removal(% orlbs/day)

TSS (Ave) 207.0 mg/L 3.3 mglL 15 mglL 98.4%

CBOD(Ave) 232.0 m{L 1.89 mg/L544lbsldyMay - Sept

99.zYo,

234lbslday

Nitrogen 30.5 mglL 5.44 mglL 327,405 lbs/yr 674lbslday

Phosphorous 3.0 mglL 0.21mglL 51 lbs/dy 26lbslday

Enterococcus 292 col/100 ml 5.2 col/l00 mlGeo.Mean

33 coVl00 ml98.2%

V:\PublicWorks\WWF\WWF - MONTHLY REPORTS\202 l\April 202 I Monthly SAB.doc

April202l - KCRRRF O&M ReportMay 21,2021Page 2 of 3

The current NPDES permit has moving l2-month cumulative load limits as well as seasonal limits from Maythrough September for Nitrogen (N), Phosphorus (P), and Carbonaceous Biochemical Oxygen Demand (CBOD)All parameters are well within the rolling average. See table below.

Table 3. KCRRRF Performance related to cumulative load limits:

TN TP CBODPERMITLIMIT

Moving l2-mo cumulative load, lbs 327.405 18,615 198,560Seasonal Daily Avg: May - Sept, lbs NA 5l 544

EFFLUENTRESULTS

Moving l2-mo cumulative load, lbs 167.70s 9,637 128,679Seasonal Daily Avg: May - Sept. lbs NA Not in effect Not in effect% Effluent Results of l2-mo Limit 51.2% 51.8% 64.8%

ELECTRIC USAGE & SOLAR PRODUCTION:

Due to the basin liner project, which began April29, operation staff is lowering the micro life in the basins. This isdue to the need to run only on one basin while the project is in progress.

Table 4. Electric Usage

Timeframe Peak Demand Daily Average

April202l 1.756 30,267

Prior Month 1.782 37,238

WASTEWATER DIVISION ACTIVITIES

Plant Operations:

1. Biosolids still working Saturdays, and will continue to do so until the basin solids levels come down2. Trying different control strategies to conhol the ammonia and nitrate levels in the basin.3. SAB diffusers pulled for de-ragging and repaired as needed.4. NAB was taken offline for liner replacement project.5. Continuing to use ferric and polymer as needed for settling during the high flows during rain events6. Finished the March eDMR and submitted7. Processed a total of 445.79 MGal in April for a YTD total of 1.87074 billion gallons

Maintenance:

1. Repaired UV units as needed2. Replaced 7 bearings on the 3 dryers and upper belt on #1 BFP.3. Collected oil samples from clarifier drives #1,2,5&6 for testing.4. Replaced spray nozzle on BFP belt wash spray bars5. Force main and valve repair at DE-Turf Sports Complex6. Pigged DSWA force main every two to three weeks to ensure good flow. Flow is 46 gpm7. Completed 1,544 hours of repairs and preventive maintenance

Table 5. Solar Production

Period Total Monthly Production Avg. Daily Production

April202l 64,581 kW 2.1s3 kWPrior Month 70,989 kW 2.290kW

V:\PublicWorks\WWF\WWF - MONTHLY REPORTS\2O2 l\April 202 I Monthly SAB.doc

April202l - KCRRRF O&M ReportMay 21,2021Page 3 of3

Electrical:

l. PS 6 - Wired replacement flow tube and tested2. PS l2C - Replaced ATS3. PS l9A - Completed PLC upgrade4. PS 20D - Installed a replacement VFD5. PS 21 - Started PLC upgrade

Biosolids:

l. Processed 8.77 million gallons of sludge at l.0o/o solids (366 tons).2. Gas usage: 4130 MCF (I-MCF: 1000 cu/ft). Usage is 699 MCF lower.3. Average belt press solids were 16.9% and final dryer (Dryer #3) solids equalto 50.2%.4. Average sludge flow:263 gpm.

AgOPS:

1 . Hauled and spread I ,293 tons of biosolids on area fields. Staff is working to empty the storage area beforecrops are planted.

2. Seasonal landscaping at wastewater facility.3. Moving boat in the SAB as needed during diffuser cleaning project.4. Performed PM work on heavy equipment.

V:\PublicWorks\WWF\WWF - MONTHLY REPORTSUO2 l\April 202 I Monthly SAB.doc

I(ent CountycDepartment of eu\fic WorF;

'?l/ ast ew ater lF aci fitie s (Divisio n

MEMORANDUMDate: Iune 22,2021

RE: KCRRRF Opn'uuoNs & MnnrreNANCE REPoRT


From: Diana T. Golt, P.8., Public Works Director /4Colby Harrington, Acting Assistant Director o{/ublic Works

REPORTING PERIOD: May,202l

Odor Complaints: There were no odor complaints in May

Power Outages: There were no power outages in May.

SSOs & Permit Exceedances:There were 6 permit exceedances and no Sanitary Sewer Overflows (SSOs) in May.. The 4 exceedances from May 20 through May 22 were associated with a power glitch affecting the

sand filter operations and high clarifier blankets which overflowed the weirs. The sand filter requiredbypass operation and the unfiltered flow interfered with UV disinfection.

o There were two (2) exceedances on May 29 and May 30 which occurred after the North AerationBasin was taken out of service for liner replacement. There were high flows (peak of 21.55 MGD)during a County-wide rain event, high clarifier blankets, and very low dissolved oxygen (DO)conditions for the time period. The very low DO likely caused a mass migration of microbes from theaeration basin through the clarifiers. Subsequently, the migration is believed to have interfered withUV disinfection.

SampleDate

Parameter Measurement Limit Units

05120121 TSS, Concentration, Daily Max 32.0 23 ms,/l

0sl2u2t TSS, Concentration, Daily Max 29.6 23 me/l05121121 Enterococcus, Concentration, Daily Max 125.9 104 col/l00ml05122t21 Enterococcus, Concentration, Daily Max >24,196 104 col/l00ml05129121 Enterococcus, Concentration, Daily Max 686.7 104 col/100m105130t21 Enterococcus, Concentration, Daily Max 172.3 104 col/100m1

PERFORMANCE DATA:

The April average flow of 12.77 ldGD is greater than the 12 month average and the 1 8 month average shown in Table 1

The peak daily flow was 14.53 MGD.

Table l. Effluent Flow, MGD (Ave): "

Permit Basis " May l2 Month l8 Month

20 12.77 14.37 13.45

V:\PublicWorks\WWF\WWF - MONTHLY REPORTS\202 l\May 202 I Monthly SAB.doc

May 2021- KCRRRF O&M ReportJune2l,202lPage2 of3

T able 2. KCRRRF Performance:

ParameterConcentration

In(Dailv Ave)

ConcentrationOut (Daily Avg)

Permit Limit(Daily Avg)

Removal(% orlbs/day)

TSS (Ave) 243.1.0 mglL 6.1mglL 15 mg& 97.6 %

CBOD(Ave) 256.4 mglL 3.13 mglL 544lbsldyMay - Sept

98.$Yo,

234lbslday

Nitrogen 29.48mglL 9.83 mg& 327,405 lbs/yr 674lbs/day

Phosphorous 3.0 mgl 0.34 mgI- 51 lbs/dy 38 lbs/day

Enterococcus 915 col/l00 ml 17.4 col/l00 mlGeo.Mean

33 col/I00 ml99.8%

Notes:a. A daily average discharge rate of 20 MGD was used by DNREC to determine mass-based effluent limits.

The current NPDES permit has moving 12-month cumulative load limits as well as seasonal limits from Maythrough September for Nitrogen (N), Phosphorus (P), and Carbonaceous Biochemical Oxygen Demand (CBOD)All parameters are well within the rolling average. See table below.



Moving l2-mo cumulative load, lbs 327,405 18,615 l 98,560Seasonal Daily Avg: May - Sept, lbs NA 51 544

EFFLUENTRESULTS

Moving l2-mo cumulative load, lbs 187,483 9,916 133,683Seasonal Daily Avg: May - Sept, lbs NA 34.75 332% Effluent Results of 12-mo Limit 57.2% 53.2% 67.3%


Beginning April29, operation's staff lowered the micro life in the basins. This change is required run on only onebasin while the North Aeration Basing Liner Project is in progress.



May 2021 1.608 28,193




Mav 2021 67,690 kW 2,183 kWPrior Month 64,581 kW 2,153 kW

V:\PublicWorks\WWF\WWF - MONTHLY REPORTS\202 l\May 202 I Monthly SAB.doc

May 2021- KCRRRF O&M ReportIune 21,2021Page 3 of3


Plant Operations:

1. Biosolids no longer working Saturdays2. Trying different control strategies to control the ammonia and nitrate levels in the basin.3. SAB running all lines on to provide as much DO as possible4. NAB offline for liner replacement project.5. G&L completed installation of new 48" Basin Valve6. Continuing to use ferric and polymer as needed for settling during the high flows during rain events7. Finished the April eDMR and submitted8. Processed atotal of 396.01 MGal in May for a YTD totalof 2.26 billion gallons

Maintenance:

1. Repaired UV units as needed2. Replaced furnheads, motor and gearbox on dryers.3. Worked on diffuser and sludge removal in NAB4. Replaced spray nozzle on Belt Filter Press' belt wash spray bars5. Replaced pump at PS#45 River View6. Completed gravity sewer repair at Bldg. 902 DAFB7. Pigged DSWA force main every two to three weeks to ensure good flow. Flow is 46 gpm8. Completed 1,592 hours of repairs and preventive maintenance

Electrical:

l. PS 4- Wired and programmed new vibration sensors and pump alarms2. PS 22 - Upgraded PLC, wiring and program3. PS I - Replaced power supply for camera system4. PS I lA - Repairs due to lightning damage5. PS 21 - Completed PLC upgrade

Biosolids:

l. Processed 8.64 million gallons of sludge atl.2% solids (439 tons).2. Gas usage: 3928 MCF (1-MCF : 1000 cu/ft). Usage is202 MCF lower.3. Average belt press solids were 17.6% and final dryer (Dryer #3) solids equal to 52.3%4. Average sludge flow: 263 gpm.

AgOPS:

l. Hauled and spread 270 tons of biosolids on area fields. Staff is working to empty the storage area beforecrops are planted.

2. Seasonal landscaping at wastewater facility.3. Moving material and equipment during NAB liner replacement project.4. Performed PM work on heavy equipment.

V:\PublicWorks\WWF\WWF - MONTHLY REPORTS\2O2 lWlay 202 1 Monthly SAB.doc

I(ent CountycDepartment of eu\fic WorE;

W as t ew at er lF aci fitie s cDivisio n

Date: Iuly 28,2021


From: Diana T. Golt, P.E., Public Works Director tlhColby Harrington, Acting Assistant Director of flUtic

RE: KCRRRF OPERATIONS & MAINTENANCE REPORT

MEMORANDUM

Works

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REPORTING PERIOD: June, 2021

Odor Complaints: There were no odor complaints in June.Power Outages: There were two power outages in June (06103121&.06126121).SSOs & Permit Exceedances:There were 16 permit exceedances and one Sanitary Sewer Overflow (SSO) in June.. There was an SSO on06/09121, at PS#3, 150 E. Water Street, Dover, DE. An estimated 1500 gallons spill

was associated with aheavy, short duration rainfall event.. There were also two (2) TSS violations for 06109121, one for daily concentration and one for daily loading.

These violations are directly related to heavy rainfall and limited holding time due to operation of only one basinduring the North Aeration Basin (NAB) liner replacement project.

o The fourteen (14) enterococcus exceedances in June were associated with multiple thunderstorms (high peakflows), high clarifier blankets, and very low dissolved oxygen (DO) conditions. The low DO likely caused amass migration of microbes from the aeration basin through the clarifiers. Subsequently, the migration isbelieved to have interfered with UV disinfection.

SampleDate

Parameter Measurement Limit Units

06103121 Enterococcus, Concentration, Daily Max 122.0 t04 col/100m106109121 Enterococcus, Concentration, Daily Max 43s.2 104 coVl00ml06109121 TSS, Concentration, Daily Max 31.6 23 msll06109121 TSS, Loading, Daily Max 3890 3839 Lbs./day06lt0lzt Enterococcus, Concentration, Daily Max 10.462 104 col/l0Oml06/1U21 Enterococcus, Concentration, Daily Max 1334 104 col/l00ml06l12l2l Enterococcus, Concentration, Daily Max 616.0 104 col/100m106113121 Enterococcus, Concentration, Daily Max 408.0 t04 col/100m106114121 Enterococcus, Concentration, Daily Max 504.0 104 col/l00ml0611st21 Enterococcus, Concentration, Daily Max 269.0 t04 col/100m106lt6l2t Enterococcus, Concenhation, Daily Max 432.0 t04 col/l00ml06117121 Enterococcus, Concentration, Daily Max 187.0 104 coVl00ml06lr8l2t Enterococcus, Concentration, Daily Max 122.0 104 col/100m106123121 Enterococcus, Concentration, Daily Max 120.0 104 coVl0Oml06127121 Enterococcus, Concentration, Daily Max 122.3 104 col/l00mlIune202l Enterococcus, Concentration,

Monthly Max (as geometric mean)130.0 JJ col/l00ml

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June202l - KCRRRF O&M ReportIuly 27,2021Page 2 of 3

PERF'ORM DATA:

The June average flow of 1252llIGD is lower than the 12 month average and the 18 month average shown in Table IThe peak daily flow was 14.76 MGD.

Table 1. Effluent Flown MGD Ave): o

Table 2. KCRRRF Removal Performance:

Notes:a. A daily average discharge rate of 20 MGD was used by DNREC to determine mass-based effluent limits

The current NPDES permit has moving 12-month cumulative load limits as well as seasonal limits from Maythrough September for Nitrogen (N), Phosphorus (P), and Carbonaceous Biochemical Oxygen Demand (CBOD).All parameters are within the rolling average. See table below.



Moving 72-mo cumulative load, lbs 327.405 18,61 5 198,560Seasonal Daily Avg: May - Sept. lbs NA 51 544

EFFLUENTRESULTS

Moving l2-mo cumulative load. lbs 230,775 10,730 133,306Seasonal Daily Avg: May - Sept, lbs NA 40.41 334% Effluent Results of 12-mo Limit 70.4% 57.6% 67.1%




Iune2021 1.550 34,219


Permit Basis " June 12 Month 18 Month

20 12.52 14.48 13.53

ParameterConcentration In

(Daily Avg)Concentration Out

(Daily Avg)Removal (%) Min. Required

Removal (%)

TSS (Ave) 263.1mglL 4.1mglL 98.5 % 92.5o/o

CBOD(Ave) 254.2 mglL 3.18 mg/L 98.7Vo 925%



Mav 2021 74,351 kW 2,478kWPrior Month 67,690 kW 2,183 kW

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June202l - KCRRRF O&M ReportIuly 27,2021Page 3 of3


Plant Operations:

l. Biosolids fully operational2. Trying different control strategies to control the ammonia and nitrate levels in the basin.3. SAB running all lines on to provide as much DO as possible4. NAB offline for liner replacement project.5. ACT completed liner installation.6. Continuing to use ferric and polymer as needed for settling during the high flows during rain events7. Finished the June eDMR and submitted8. Processed a total of 375.57 MGal in June for a YTD total of 2.64 billion gallons

Maintenance

1. Repaired UV units as needed.2. Replaced rollers and belt on conveyor.3. Worked on liner removal in North Aeration Basin (NAB)4. Installed Kunkle valve on expansion tank in BIO5. Manhole rehabilitation project started6. Rebuilt diffusers for the NAB project7. Pigged DSWA force main every two to three weeks to ensure good flow. Flow is 46 gpm.8. Completed 1,509 hours of repairs and preventive maintenance

Electrical:

1. Installed and tested new radios for licensed radio project2. PS 23- Upgraded PLC and HMI, including rewiring of station3. LS 6- Started PLC upgrade , including cleaning up wiring in station4. LS 7- Started PLC upgrade , including cleaning up wiring in station5. PSl54 & 29- Receiving and storing materials for major station upgrades

Biosolids:

l. Processed 8.64 million gallons of sludge at 1.2% solids (439 tons).2. Gas usage: 3600 MCF (l-MCF: 1000 cu/ft). Usage is 328 MCF lower.3. Average belt press solids were 17.6% and final dryer (Dryer #3) solids equal to 52.3%.4. Average sludge flow: 263 gpm.

AeOPS

l. Hauled and spread 839 tons of biosolids on area fields.2. Seasonal landscaping at wastewater facility.3. Moving material and equipment during NAB liner replacement project.4. Performed PM work on heavy equipment.

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J(ent County

Deyartment of nuhftc ^l,VorQs

MEMORANDUMDATE:TO:FROMRE:

July 20,2021Kent County Regional Sewer Advisory BoaDiana Golt, P.E., Public Works DirectorWhispering Pines Mobile Home Park Pu Partnership for Sewer Construction

Members

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The Department has received a request from Whispering Pines, Inc. (the property owner) for the County tocomplete a sewer project for Whispering Pines Mobile Home Park. The proposed project requires theconstruction of the remaining sewer system; the connection of the remaining units in Whispering Pines MobileHome Park to County sewer; and the abandonment of the onsite septic system tanks. Whispering PinesMobile Home Park, located on Walnut Shade Road, is a mobile home community of about 88 approvedberthing spaces. It was initially constructed in the 1960's and expanded in the mid 1970's. The summary onthe next page shows sewer-related history from 2001 to present for the property.

Kev information for the oroiect is included below:On July 8, 2003, the mobile home park was added to Kent County Sewage Disposal District No. 1 withLevy Court's adoption of Resolution#2361.In 2011, the property owner constructed Phase 1 of the park's sewer system. The project was fundedthrough DNREC loans of $27 9 ,012 (5 yr . @ 3 .609oh) to the park owner. At the end of construction, loanprincipal forgiveness was applied in the amount of $139,506 and then the loan amortization started. TheDNREC loan was paid in full.Twenty-nine (29) units were connected to County sewer during Phase I construction. County-wide anddistrict impact fees were paid to the County for 29 units through impact fee credits from a Public WorksAgreement and/or additional payment. No credit remains. Additional connections were completed overthe past several years and there are cumently thirty-six (36) units connected to the County sewer system.The FY2022 sewer rate for units connected in the park is $ I 16.85 per EDU per quarter (SouthCentral/Double Run rate). The proposed sewer rate for Phase 2 is intended to be the same as Phase I(subject to annual rate increase).

Phase 2 sewer construction remains to be completed to serve about 52 berthing spaces. Aconstruction estimate of approximately $500,000 was prepared by Davis Bowen & Friedel, theProperty Owner's engineer. The estimate does not include costs associuted with septic abandonment,impact fees, sewer permit fees, legal fees, consulting engineering fees, Public lltorks Departmentexpenses, etc.

The concept for the proposed project is a public/private partnership. The Property Owner has paid forengineering services to date. The Department has requested that the Property Owner contribute engineeringservices expensed plus additional engineering services such as modification of bid documents to meet fundingagency requirements. The engineering costs borne by Whispering Pines, Inc. are considered a privatecontribution toward the project. The proposed project was not included in Kent County's FY2022 budget as aSewer Fund Capital Project and has no designated funds. The Department would pursue necessary fundingfrom state or federal agencies. If the proposed project is supported, a Notice of Intent would need to besubmitted to DNREC by the end of August2021.

The Department discussed the item with Levy Court on July 20,2021. The Department seeks inputfrom the Sewer Advisory Board at its August 4th meeting and will then meet with the Commissionersafterwards in August 2021.V:\PublicWorks\SSD_expan&creat\Double Run Area (SOUTH CENTRAL)Whispering Pines MHP (DR-PWA)Whispering Pines-Public+Private Sewer Proposal SABmemo 080421.doc

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Iuly 20,2021Whispering Pines Mobile Home Park - Public Sewer Construction GuidancePage2 of2

Hlsrozucar- BacrcRown Relarpo ro WHrsppnrNc PNes Moerlp Hoi\4p PARr & KsNrr CouNry Sewnn

ln 2001/2002, the property was included in the Walnut Shade sewer area concept and the ownersparticipated in a Public Works Agreement (PWA) which required payment of $48,958.00 (5.4% of projectcost) less $16,000.00 for the appraised value of an easement for the forcemain for a total of $36,000. Adistrict impact fee credit for 9l EDUs was allowed under the County Code at that time in exchange for theconstruction contribution. This is no longer permitted under the current County Code.

In2002, Whispering Pines, Inc. conveyed an easement to Kent County Levy Court for the construction ofthe Walnut Shade area forcemain through the referenced park. As described above, the compensation forthe easement reduced the owner's contribution toward the PWA.

1n2003, the Walnut Shade sewer area name was replaced by the Double Run sewer area and theWhispering Pines owners agreed to participate in a new Technical Feasibility Study to determine the sewerservice requirements for the revised area. The owners agreed to become part of the Double Run PWA asan acknowledged party with the same contribution as the original PWA.

In2007, the 24" South Central Bypass forcemain was constructed through the mobile home park as part ofthe Double Run Area Sewer Project.

In2007, the sewer system for Barrett Farm subdivision was constructed and a sewer gravity stub wasconstructed to the Whispering Pines Mobile Home Park Property Park from Burns Way.

In 201I, Whispering Pines, Inc. constructed Phase I of the sewer system to serve 29 berthing spaces. Theproject was funded through two DNREC loans of $279,012 to the park owner. The original loan was$239,012 for 5 years at an interest rate of 3.609Yo with quarterly repayments. A $40,000 supplementalloan was also approved and drawn upon with the same terms as the original loan. During construction,interest plus fee only payments were made on amounts drawn. At the end of construction, loan principalforgiveness was applied in the amount of $139,506 and then the loan amortization started. County-wideand district impact fees were paid to the County for 29 mobile homes through impact fee credits from aPublic Works Agreement andlor payment.

On June 16,201l, the 91 EDU district impact fee credit from 2002 was used toward sewer permits, impactfees and testing and inspection fees for Whispering Pines and St. Jones Landing (another mobile homepark owned by the same developer). This fully depleted the credit. The value of the 9l EDU credit wasbased on the 2011 district impact fee rate of $1,491/EDU, for a value of $135,681.00.

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Mobile homes have been connected over the past several years and there are currently 36 dwellings beingbilled for service. Phase 2 sewer construction remains to be completed.

Review of the easement plans dated 08126120 and the Phase 2 construction plans dated 05/04120 preparcdby Davis, Bowen & Friedel (DBF) indicate a conflict in the total number of berthing spaces which willneed to be resolved.

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tsr - co.kent.de.us

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