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HomeMy WebLinkAboutNC0089265_Renewal Application_20181231PHONE (336) 356-8962 o� �Rr� cap°i TOWN OF DOBSON 307 NORTH MAIN STREET • POST OFFICE BOX 351 DOBSON, NORTH CAROLINA 27017 December 31, 2018 Ms. Wren Thedford Division of Water Resources Water Quality Permitting Section - NPDES 1617 Mail Service Center Raleigh, NC 27699-1617 Ms. Thedford, FAX (336) 356-4836 Please find enclosed the renewal application for NPDES permit number NC0089265 for the Town of Dobson. I have also enclosed the required map (showing outfall), flow schematic, and solids handling plan for the town's water treatment plant. The solids handling and WTP upgrades project, while not complete, has been bidded and awarded to J.S. Haren Company, with construction anticipated to begin in the first quarter of 2019. Thank you for your patience and understanding. Please do not hesitate to contact me with and questions you may have regarding this project or the enclosed permit renewal paperwork. Sincerely, Ci.lJlAA Laura Neely Town Manager NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Mail the complete application to: NCDEQ / DWR / NPDES 1617 Mail Service Center, Raleigh, NC 27699-1617 NPDES Permit Number NC0089265 I 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 Town of Dobson Facility Name Dobson WTP Mailing Address P.O. Box 351 City Dobson State / Zip Code North Carolina 27017 Telephone Number (336)356-8962 Fax Number (336)356-4836 e-mail Address frazierm(rr),dobson-nc.com, CC:laura.neely@dobson-nc.com 2. Location of facility producing discharge: Check here if same as above ❑ Street Address or State Road 2604 Prison Camp Road City Dobson State / Zip Code North Carolina 27017 County Surry 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 Town of Dobson Mailing Address P.O. Box 351 City Dobson State / Zip Code North Carolina 27017 Telephone Number (336)356-8962 Fax Number (336)356-4836 4. Ownership Status: Federal ❑ State ❑ Private ❑ Public Page 1 of 4 Version 6/2017 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 5. Type of treatment plant: ® 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, Fisher River. 7. Describe the treatment process(es) for the raw water: The treatment process consists of a raw water reservoir, coagulant addition, flash mix, flocculation, sedimentation, filtration, and disinfection. 8. Describe the wastewater and the treatment process(es) for wastewater generated by the facility: The wastewater consists of backwash from the filters, re -wash from ripening of the filters, and accumulated solids from the sedimentation basin. Residuals consist of dilute natural solids that have been removed during treatment and chemicals added during the treatment process. Wastewater will be segregated from storm water and piped to a new treatment system at the water plant site. Flow will be equalized, settled, and solids stored in holding tank. The clarifier liquid would be decanted off the tank and discharged to the tributary of the Fisher River under a new NPDES permit. The settled solids will be pumped to a dewatering system. The dewatered solids will be transported to Surry County Landfill for disposal. 9. Number of separate discharge points: 1 Outfall Identification number(s) 001 10. Frequency of discharge: Continuous ❑ Intermittent If intermittent: Days per week discharge occurs: 7 Duration: 8 hours* *Batch operation with discharge up to 8 hours per day with the rate set to obtain optimum treatment. 11. Plant design potable flowrate 1.5 MGD Backwash or reject flow 0.066 MGD 12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including latitude and longitudes Fisher River, map attached Page 2 of 4 Version 6/2017 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 13. Please list all water treatment additives, including cleaning chemicals or disinfection treatments, that have the potential to be discharged. Alum / aluminum sulfate Yes Iron sulfate / ferrous sulfate Yes Fluoride Yes X No Ammonia nitrogen / Chloramines Yes Zinc -orthophosphate or sweetwater CP1236 Yes List any other additives below: Del PAC 2020 Aluminum Chloride Hydroxide Sulfate Solution Hydrated Lime, Copper Sulfate Chlorine 14. Is this facility located on Indian country? (check one) Yes ❑ /k No X No X No X No X 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]. Solids Handling Plan 16. NEW Applicants Information needed in addition to items 1-15: New applicants are strongly recommended to contact a permit coordinator with the NCDENR Customer Service Center. Was the Customer Service Center contacted? ❑ Yes ❑ No 01 Analyses of source water collected )01 Engineering Alternative Analysis A Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a water quality model. 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. Laura Neel_ Town Manager Prin ed name of Person Signing Title _ �a 131 jaoi8 Signature of Applican Date Page 3 of 4 Version 6/2017 NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants 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 imprisonment not more than 5 years, or both, for a similar offense.) Page 4 of 4 Version 6/2017 3a18om3 3NWO-IH0 3NIl wme 3NI803H0 31d31nS i 13dd00 SdWnd 2J31VM a3HSINl3 TOM-10 S8311IJ aNVS N011b'1N3W1a3S Nouvin000ij XIW HSTU ONOd 831VM M" SdWnd N31VM MCI U_ Q 75 W I /U� V J W Q C' z O V) m O D:e (83AN 83HS13) DIVAI U Q W U Cn w CD m Q = C1i U (n Z f-- Z O U) m O Q _ _ :9: (_ Y Q Q m r (N Y Q Q m of QA1QC _t�:_ DRAFT RESIDUALS MANAGEMENT PLAN FOR DOBSON WATER TREATMENT PLANT DOBSON, NORTH CAROLINA August 23, 2012 Prepared By: Anderson & Associates, Inc. Professional Design Services Greensboro, North Carolina NC Corporate License No. C-0867 JN 30078 AM Residuals Management Plan for Dobson WTP TABLE OF CONTENTS PAGE A. PLAN SUMMARY 2 1. Background 2 2. General 2 3. Residuals Generation and Treatment 2 4. Disposal Site 3 5. Transportation 3 6. Record Keeping 4 APPENDIX A Residuals Characteristics 1 APPENDIX B Disposal Site 2 APPENDIX C Hauling Route 3 luw OI%PR C Uot3D6 oo7s ENGWEERINGISTIJDYAPM30079 RESIpI1RL5 "G"T PLAN.poC% TABLE OF CONTENTS 1 AM Residuals Management Plan for Dobson WTP APPENDIX A Residuals Characteristics 1. Testing was performed on the raw and finished water as an indication of potential constituents present in the combined residuals from the plant. 2. Upon concurrence with the DRAFT plan, each of the separate residual streams will be sampled and mixed to form a representative combined residual sample for further analysis. TCLP testing will be performed to confirm that the waste is non- hazardous and suitable for landfilling. aceAnalydica!! mevr.pacs�alxs.tom July 30, 2012 Michael Frazier Town of Dobson PO Box 351 Dobson, NC 27017 RE: Project: Ww Testing 07/12/12 Pace Project No.: 92123987 Dear Michael Frazier: Pace Analytical Services, Inc. 6701 Conference Drive Raleigh, NC 27607 Enclosed are the analytical results for sample(s) received by the laboratory on July 12, 2012. The results relate only to the samples included in this report. Analyses were performed at the Pace Analytical Services location indicated on the sample analyte page for analysis unless otherwise footnoted. If you have any questions concerning this report, please feel free to contact me. Sincerely, Terri Page for MaryAnne Sims maryanne.sims@pacelabs.com Project Manager Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. (919)834-4998 Page 1 of 6 acmnalytical' %%Wp bscm Project: Ww Testing 07/12/12 Pace Project No.: 92123987 Asheville Certification IDS 2225 Riverside Dr., Asheville, NC 28804 Florida/NELAP Certification #: E87648 Massachusetts Certification #: M-NCO30 North Carolina Drinking Water Certificalion #: 37712 CERTIFICATIONS North Carolina Wastewater Certification #: 40 South Carolina Certification #: 99030001 West Virginia Certification #: 356 Virgina/VELAP Certification #: 460222 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except In full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 6701 Conference Drive Raleigh. NC 27607 (919)834-4996 Page 2 of 6 s 5aneAnalytcal wwwpgoalbbs cm Project: Ww Testing 07/12/12 Pace Project No.: 92123987 Lab ID Sample ID 92123987001 Raw 92123987002 Finished Pace Analytical Services, Inc. 6701 Conference Drive Raleigh, NC 27607 (919)834-4996 SAMPLE ANALYTE COUNT Analytes Method Analysts Reported Laboratory EPA200.7 JMW 5 PASI-A 40CFR PART 432.2 EWS 1 PASI-A EPA 351.2 JDA 1 PASI-A EPA 353.2 DMN 1 PASI=A EPA 365.1 JDA 1 PASI-A EPA200.7 JMW 5 PASI-A 40CFR PART 432.2 EWS 1 PASI-A EPA 351.2 JDA 1 PASI-A EPA 353.2 DMN 1 PASI-A EPA 365.1 JDA 1 PASI-A REPORT OF LABORATORY ANALYSIS Page 3 of 6 This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. aceAnaljdcal xnm:�deDs.mm Project: Ww Testing 07/12/12 Pace Project No.. 92123987 Sample: Raw Parameters Aluminum Copper Iron Manganese Zinc Nitrogen Nitrogen, Kjeldahl, Total Nitrogen, NO2 plus NO3 Phosphorus ANALYTICAL RESULTS Lab ID: 92123987001 Results Units ND mg/L 0.13 mg/L 0.85 mg/L 0.073 mg/L ND mg/L 0.71 mg/L ND mg/L 0.37 mg/L ND mg/L Collected: 07/12/12 08:00 Report Limit DF Qualifiers 0.10 1 0.0050 1 0.050 1 0.0050 1 0.010 1 0.70 1 0.50 1 0.020 1 0.050 1 Pace Analytical Services, Inc. 6701 Conference Drive Raleigh, NC 27607 (919)834-4998 te: 07/30/2012 02:31 PM REPORT OF LABORATORY ANALYSIS Page 4 of 6 This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. aceAnall4kal19 xorxcPswlabscrnr ANALYTICAL RESULTS Project: Ww Testing 07/12/12 Pace Project No.: 92123987 Sample: Finished Parameters Lab ID: 92123987002 Results Units Collected: 07/12/12 08:00 Report Limit DF Aluminum ND mg/L 0.10 1 Copper MOO mg/L 0.0050 1 Iron ND mg/L 0.050 1 Manganese ND mg/L 0.0050 1 Zinc ND mg/L 0.010 1 Nitrogen ND mg/L 0.70 1 Nitrogen, lgeldahl, Total ND mg/L 0.50 1 Nitrogen, NO2 plus NO3 0.38 mg/L 0.020 1 Phosphorus 1.6 mg/L 0.050 1 te: 07/30/2012 02:31 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Qualifiers Pace Analytical Services, Inc. 6701 Conference Drive Raleigh, NC 27607 (919)834-4998 Page 5 of 6 aceAnalj6cal xarw.peeelabxscm Pace Analytical Services, Inc. 6701 Conference Drive Raleigh, NC 27607 (919)834-4998 QUALIFIERS Project: Ww Testing 07/12/12 Pace Project No.: 92123987 DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to changes In sample preparation, dilution of the sample aliquot, or moisture content. ND - Not Detected at or above adjusted reporting limit. J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL -Adjusted Method Detection Limit. PRL - Pace Reporting Limit. RL- Reporting Limit. S - Surrogate 1,2-Diphenyihydrazine (8270 listed analyle) decomposes toAzobenzene. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean -Up U - Indicates the compound was analyzed for, but not detected. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each anayte is a combined concentration. Acid preservation may not be appropriate for 2-Chloroethylvinyl ether, Styrene, and Vinyl chloride. LABORATORIES PASI-A Pace Analytical Services -Asheville ANALYTE QUALIFIERS D6 The relative percent difference (RPD) between the sample and sample duplicate exceeded laboratory control limits. M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. te: 07/30/2012 02:31 PM REPORT OF LABORATORY ANALYSIS Page 6 of 6 This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. AM Residuals Mara ement Plan for Dobson WTP A. PLAN SUMMARY Background The Town of Dobson is located in Surry County, North Carolina. The Town operates a public water system which serves the community. Water is supplied from a water treatment plant operated by the Town which draws water from the Fisher River. The plant has a rated capacity of 1.5 mgd and was originally constructed in 1967. There have been no significant upgrades to the treatment plant since the original construction. The original design piped the generated residuals and all basin drains to the storm sewer. This practice is being discontinued at the plant. 2. General The purpose of this Residuals Management Plan is to describe the new procedure for disposal of the water treatment plant residuals from the Dobson Water Treatment Plant. The residuals will be settled, dewatered, and then hauled to the Surry County Landfill for ultimate disposal. 3. Residuals Generation and Treatment The water treatment plant uses a conventional, coagulation, flocculation, sedimentation, filtration, and disinfection process. As such, residuals are generated from the removal of solids and the addition of chemicals during the treatment process. The main sources of these residuals within the treatment plant include: Backwash from the filters 2. Rewash water from ripening of the filters 3. Accumulated solids from the sedimentation basins While these sources consist mainly of dilute natural solids that have been removed during treatment, chemicals added during the treatment process could also occur within these sources. The chemicals added during treatment include: 4. Aluminum sulfate (alum), a coagulant 5. Lime, to raise pH lowered by alum 6. Chlorine, a disinfectant 7. Fluoride, a dental health supplement. Other potential pollutants may occur in low concentrations in the raw water and become more concentrated in the residuals. These might include any elements that occur in an insoluble form. Testing conducted in July 2012 showed that iron, manganese, and copper are likely to be present in the residuals. The residuals will be treated at the water treatment plant in a settling tank and dewatered through a belt press or filter container to reduce the volume of residuals and ultimately the disposal cost. Water treatment plant residuals 1IAAGSOIIPROJECTSt30130078130078 ENGINEERINGISTUDAPERM078 RESIDUALS MGMT PLAN.DDCX 8/23/12 PLAN SUMMARY 2 AVM Residuals Management Plan for Dobson WTP contain virtually no pathogens and therefore do not require stabilization before settling and dewatering. The settling tank used for treatment will serve several purposes. First, it will act as an equalization tank allowing backwashing and sedimentation basin cleaning to proceed when needed. Second, it will serve as a sedimentation tank, allowing solids to settle out and the clear water to be decanted off. Third, it will store the concentrated residual solids until they are drawn off for dewatering. The concentrated solids (approximately 5%) will be dewatered in a belt press or filter box to approximately 12-15% to pass the paint filter test. The volume of water plant residuals anticipated to be generated is approximately 500 gallons per day. Once this is dewatered, the weight of residuals to be disposed of in the landfill is estimated to currently average 410 pounds per day, or 46 "wet" tons per month. Without any significant changes in the treatment process, this could increase to about 85 tons per month at the full 1.5 mgd water treatment plant capacity. Residuals will be sampled and analyzed to establish general characteristics and also to analyze the potential for leaching toxic components These results are provided in Appendix A. The Environmental Compliance Supervisor (the "gatekeeper") at the municipal landfill (as defined by RCRA Subtitle D) will collect TCLP data to determine whether the waste can be accepted into the facility. If TCLP analytical results are below the TCLP D-list maximum contamination levels (MCLs), the waste will be accepted. If they are above these levels, the waste must be taken to a hazardous waste disposal facility. 4. Disposal Site The dewatered residuals will be disposed of at the Surry County Landfill located at 237 Landfill Road, Mt. Airy, North Carolina. Surry County operates this Subtitle D landfill. Appendix B provides information on the landfill and a letter of intent from the landfill to accept the residuals. 5. Transportation Dewatered residuals will be hauled directly from the Dobson Water Treatment Plant to the Surry County Landfill on a schedule defined by the water treatment plant operator. Residuals will NOT be mixed with other solid wastes from the Town. The Town will either haul the residuals using their own equipment and personnel or retain the services of a hauling contractor. The hauling truck will be covered and suitably water tight. The route to be taken by the hauler from the Dobson Water Treatment Plant to the landfill (approximately 12 miles) will be as follows: From Prison Camp Road, turn left onto US-601 BUS N and go 1.4 miles. Turn left onto US- 601 N/ Rockford Street and go 4.4 miles. Turn right to merge onto 1-74E and go 1.3 miles to Exit 13 (Park Drive) and turn left onto Park Drive. Take the first right onto Sheep Farm Road and go 2.2 miles. Turn right onto Hiatt Road and go 0.8 miles. Turn right onto Landfill Road. Landfill is on the left. A map of the route is included in Appendix C. 11AAGS01kPRQJECPER00078 RESIDUALS MGMT P"N.60G% 8/23/12 PLAN SUMMARY 3 AM Residuals Management Plan for Dobson WTP 6. Record Keeping A manifest will be completed for each load of dewatered residuals from the Town's water treatment plant delivered to the Surry County Landfill under contract with Surry County. The County will use this manifest as a basis for invoicing the Town for reimbursement of disposal fees. The County will be invoiced by the Surry County Landfill as part of their total solid waste load under the terms of their current contract with the landfill. The contractor's driver will obtain weight ticket and landfill attendant's signature at the time the load is delivered. Manifest and weigh ticket will then be delivered to the Town office. The Town will then forward a copy of the weight tickets to the County on a monthly basis so that an invoice can be prepared. The Town will be invoiced at the current rate paid by the County (i.e., $38 /ton as of July 2012). IIAAGSOIIPROJECTS130130078130078 ENGINEE_RING{STUDYIPER130076 RESIDUALS MGMT PLAN.DOCX 8/23/12 PLAN SUMMARY 4 AWd Residuals Manaaement Plan for Dobson WTP ,PPENDIX B )isposaf Site Dennis Bledsoe Interim- Director Mr, Gary Crouch Anderson & Associates, Inc. 100 Ardmore Street Blacksburg, VA 24060 Phone: 336-401-8376 Fax: 336401-8380 COUNTY OF SURRY PUBLIC WQIMSS )DEPARTMENT SoUd Waste:]Xviisi0>a P.O. PDX 342 Dobson, NC 27017 Re: Town of Dobson Water Treatment Residuals Disposal JN 30078 Dear Mr. Crouch: This letter of intent is provided as a follow-up to our telephone conversations regarding disposal of dewatered water treatment plant residuals at the Surry County Landfill. We understand that these residuals will be generated at the Town of Dbbson's municipal water treatment plant, and that the Town is in the process of changing their current disposal methods. The residuals will consist of normal concentrated solids removed during the treatment process and the residue of normal chemicals usad in the treatment process. The waste will be dewatered and is not anticipated to contain hazardous material. The Sury County Landfill can accept this type .of waste. We would be willing to accept this waste for disposal under the following conditions: , 1. TCLP testing shows that the waste is classified as non -hazardous. 2. The dewatered'reslduals pass the paint filter test. 3. The residuals are not mixed witli other solid wastes. 4. The waste is being disposed' of under a plan acceptable to the North Carolina Department of Environmental Health and Resources. This letter of intent is provided to document our willingness to accept the waste. A final agreement will be executed once we have documentation that the waste is acceptable. Please keep us informed of your schedule and intentions. Let us know -if we can be of further assistance. Sincerely, Dennis Bledsoe Interim -Director of Public Works -)urIy 1-oun y iN i— rage i of i Surry County Public Works Dennis Bledsoe, Intermin Director P.O. Box 342 Dobson, NC 27017 Phone: 336-401-8376 Office Hours: Office Hours: Monday - Saturday 8:00 - 4:00 Landfill And Convenience Center Locations Surry County Landfill Surry County operates a Subtitle D landfill located at 237 Landfill Road, Mt. Airy and is available for the disposal of residential and commercial waste. Waste from the transfer station is delivered to the Subtitle D landfill for final disposal. This location has a construction and demolition disposal area. This is for the disposal of any building material (wood, metal, drywall, vinyl, etc) or demolished buildings, plus cement and paving waste. An area is provided at the Mt. Airy landfill for the disposal of tires (rims must be removed) and appliances (white goods), and yard waste. Surry County operates thirteen recycling/convenience centers. These centers are available for residential drop-off of household waste and provide an outlet for recycling. These centers are not available to commercial business waste disposal. All centers accept household waste for disposal. Household waste consists of trash and food waste from the daily activities of a home. Anything other than household waste such as wood, metal, or in general "spring or basement" cleaning must come to the landfill at Mt. Airy. Users of the centers are discouraged from bringing pickup loads of bagged trash to the centers for disposal. The centers are not equipped to handle large loads. Large loads should be delivered directly to the landfill "or transfer station" for disposal. No liquids or hazardous waste is accepted at any of the County's disposal areas. Disposal methods of liquids and hazardous waste are available from the source of purchase or the manufacturer of the product. Recycling facilities at each center are available for newspaper, magazines, aluminum cans, glass bottles, cardboard, and auto batteries. Glass containers should be rinsed dean. Newspaper, magazines, and cardboard should be free of any foreign materials such as string, paper, or plastic bags and should not be co -mingled with other paper types. The Mt. Airy center has facilities for all paper types. Paper such as envelopes, color paper, plain paper, paper with black or color ink are considered mixed paper and do not have to be sorted. Computer paper is acceptable, but must be segregated from other paper. Also, the Mount Airy Center accepts computers, televisions, fax machines, copiers, and other electronics. " Notice " Email correspondence is subject to the North Carolina Public Records Law (NCGS Chapter 132). This Site Requires The Newest Versions Df Adobe Flash Player LU And Acrobat Reader -- .,,,.-.- , —^1,+— 0/11)/7A 1'1 AM Residuals Management Plan for Dobson WTP APPENDIX C Hauling Route c C c c O O ti � O ti O O N a— O U Z ' M _C C o % E r o N N M O Z y E in 0 IWO i N � r a O J L) N I� N y m