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Home My WebLink AboutNC0080381_Renewal Application_20190131 1 July 31, 2018 141- onroe NC-DENR/DWQ/NPDES Unit North Carolina 1617 Mail Service Center Raleigh,NC 27699-1677 RECE6VED!DENR/DWR Re: Application for Permit Renewal JAN 31 2019 NPDES PermitNC0080381 Water Resources City of Monroe John Glenn Water Treatment Plant Permitting Section Stewarts Creek—Yadkin/Pee Dee Basin Union County To whom it may concern: Please find enclosed in triplicate an application for renewal of NPDES Permit No.NC0080381 for the discharge of treated basin sludge and backwash water from a water treatment plant process to the waters of Stewarts Creek in Union County. This application is being submitted in advance of the 180 days required to the expiration of the existing permit on January 31,2019. We are requesting that you review the enclosed application and renew our permit in accordance with the requirements of state regulation. The facility is not a primary industry under Title 40CFR,Appendix A;therefore no priority pollutant analysis is required. The facility is an existing facility. The John Glenn Water treatment plant is currently upgrading is sludge handling capabilities. We are adding a redundant thicker and also a centrifuge for mechanical dewatering. With this upgrade,we had to remove 9 drying beds to accommodate the new equipment. The upgrade is schedule for completion in June 2019. Please do not hesitate to contact me at any time during the review process at(704)282 4624 if you have any questions. Respectfully, .'.,,.e-- tom' Russell G. Colbath P.E. Water Resources Director City lonroe • PO Box 69 • Monroe,NC 28111-006'' el: (704) 282-4501 e Fax: (704)282-5764 - www.monroenc.org NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Mail the complete application to: N. C. Department of Environment and Natural Resources Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 NPDES Permit Number NC0080381 If you are completing this form in computer use the TAB key or the up - down arrows to move from one field to the next. To check the boxes, click your mouse on top of the box. Otherwise,please print or type. 1. Contact Information: Owner Name City of Monroe Facility Name John Glenn Water Treatment Plant I Mailing Address PO Box 69 City Monroe State / Zip Code NC 28111-0069 Telephone Number (704) 282-4624 Fax Number (704) 282-5764 e-mail Address rcolbath@monroenc.org 2. Location of facility producing discharge: Check here if same as above ❑ Street Address or State Road 2119 Old Camden Road City Monroe State / Zip Code NC 28110 County Union 3. Operator Information: Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the Operator in Responsible Charge or ORC) Name City of Monroe Mailing Address PO Box 69 City Monroe State / Zip Code NC 28 1 1 1-0069 Telephone Number (704)282-464 Fax Number (704)282-5764 4. Ownership Status: Federal ❑ State ❑ Private ❑ Public X Page 1 of 4 Version 5/2012 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 5. Type of treatment plant: X Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by filtration and disinfection) ❑ Ion Exchange (Sodium Cycle Cationic ion exchange) ❑ Green Sand Filter (No sodium recharge) ❑ Membrane Technology (RO, nanofiltration) Check here if the treatment process also uses a water softener ❑ 6. Description of source water(s) (i.e. groundwater, surface water) Surface Water 7. Describe the treatment process(es) for the raw water: In Lake Tatty we find our first treatment process,aeration.From there the water is pumped from our source water intake into the reaction basin Potassium permanganate is injected seasonally as needed into the water prior to the reaction basin.Sodium hydroxide may be added prior to the reaction basin to provide alkalinity to the source water for treatment when needed.From the reaction basin the water flows to our splitter box.Powder activated carbon is added between the reaction basin and the splitter box Sodium hydroxide is added right before the splitter box for pH control and alkalinity adjustment Ferric Chloride is added in the splitter box and is our primary coagulant.From the splitter box the water flows to the individual rapid mixers where it receives mechanical mixing We have the capability to add our primary coagulant here also.Polymer may be added to the discharge of the rapid mixers to assist in the flocculation/coagulation process. From the rapid mixers the water flows into our flocculators where slow mixing of the water and chemicals occur for floc formation The water exits the flocculators directly into the sedimentation basins. In the basins the heavier particles settle to the bottom of the basin where they are removed by a Trac Vac system or during a basin dump through bottom drains and sent to the clarifier(sludge thickener).The clear water from the top of the basins is sent to the filters.The filters are dual media dual cell filters.The filters are rated at 4.5 mgd each The objective of the filters is to remove any suspended particles. In the filters we add chlorine,and sodium hydroxide,polymer may be added here as well The filters have an air scouring system for backwashing.The back wash water is sent to the sludge storage lagoon.The filtered water flows to the 2 million-gallon clearwell for further disinfection prior to being sent to the distribution system 8. Describe the wastewater and the treatment process(es) for wastewater generated by the facility: Filter backwash water is sent to the sludge storage lagoon where the solids settle out and the supernatant is sent to the clarifier (sludge thickener).The clarifier also accepts the settled solids from the sedimentation basins either from the trac vac system or a basin dump.In the sludge thickener the solids continue to settle to the bottom and thickening The sludge is drawn off the bottom and dispersed to the drying beds for drying or to trucks for land application.The supernatant from the sludge thickener is de- chlorinated as needed with sulfur dioxide and discharge to the creek through the NPDES permitted discharge point. 9. Number of separate discharge points: 1 Outfall Identification number(s) 001 10. Frequency of discharge: Continuous ❑ Intermittent X If intermittent: Days per week discharge occurs: 7 Duration:Varies 0 to 24 hours 11. Plant design potable flowrate 11.2 MGD Backwash or reject flow 0.85 MGD Page 2 of 4 Version 5/2012 I , • NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including latitude and longitude): Stewarts's Creek Latitude 35° 02' 13" N Longitude 80° 18'37"W (Map attached) 13. Please list all water treatment additives, including cleaning chemicals or disinfection treatments, that have the potential to be discharged. Alum / aluminum sulfate Yes No x Iron sulfate / ferrous sulfate Yes No x Fluoride Yes x No Ammonia nitrogen / Chloramines Yes x No Zinc-orthophosphate or sweetwater CP1236 Yes x No List any other additives below: Ferric Chloride, Chlorine, Carbon, Polymer, Copper Sulfate, Potassium Permaganate 14. Is this facility located on Indian country? (check one) Yes ❑ No X❑ I 15. Additional Information: • Provide a schematic of flow through the facility, include flow volumes at all points in the water treatment process. The plan should show the point[s] of addition for chemicals and all discharges routed to an outfall [including stormwater]. Attachment • Solids Handling Plan Attachment 16. NEW Applicants Information needed in addition to items 1-15: • New applicants are highly encouraged to contact a permit coordinator with the NCDENR Customer Service Center. Was the Customer Service Center contacted? ❑ Yes ❑ No • Analyses of source water collected • Engineering Alternative Analysis • Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a water quality model. Page 3 of 4 Version 5/2012 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 17. Applicant Certification I certify that,I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. Russell G. Colbath P.E. Water Resources Director Printed name on Signing Title--7 �9� _7 / / d Signature of Applicant Date North Carolina General Statute 143-215.6(b)(2)provides that:Any person who knowingly makes any false statement representation,or certification in any application, record,report,plan,or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article,or who falsifies,tampers with,or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,or by imprisonment not to exceed six months,or by both. (18 U.S C Section 1001 provides a punishment by a fine of not more than$25,000 or impnsonment not more than 5 years,or both,for a similar offense) Page 4 of 4 Version 5/2012 I • . 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Sulfur Dioxide ' 110 Old Camden Road II onroe North Carolina Solids Handling Plan John Glenn Water Treatment Plant City of Monroe,North Carolina Wastewater from the water treatment process consists of backwash water from the filters and ferric chloride sludge removed from the sedimentation basins. The backwash water from the filters is discharged to the wash water lagoon. In the wash lagoon solids from the backwash settle to the bottom. The clear water on the top is then pumped to our clarifier(sludge thickener)by our wash water lagoon decant pumps. Ferric chloride sludge from the sedimentation basins is discharged to the clarifier by routine operation of the trac vac system or during periodic basin cleaning. In the clarifier the solids and water are separated. The solids are concentrated in the bottom of the clarifier and pumped to sand drying beds or to trucks for land application.During the pumping process to the drying beds the sludge is condition with polymer at the sludge pumping pumps. The dewatered cake from the sand drying beds is currently taken to the City of Monroe's wastewater plant where it is blended with their sludge and land applied in accordance with Land Application Permit No. WQ0001346. The clear water from the top of the clarifier is discharged at controlled intervals by the decant pumping station or gravity feed through the parshall flume where it is metered,from there it flows through the dechlorination contact chamber into Stewarts Creek. Sincerely, David Rankin Water Treatment Superintendent