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HomeMy WebLinkAboutNC0026921_NPDES Permit Renewal_20131119NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor November 19, 2013 Attn: Larry G. Hagin Town of Parkton PO Box 55/28 West David Parnell St Parkton, NC 28371 Subject: Receipt of permit renewal application NPDES Permit NC0026921 Roberson County Dear Mr. Hagin, John E. Skvarla, III Secretary. RECEIVED NOV 26 2013 DENR -FAYETTEWLLE REGIONAL OFRC E The NPDES Unit received your permit renewal application on October 28th, 2013. This permit renewal has been assigned Joe Corporon (919-807-6394) who will contact you if any additional information is required to complete your permit renewal. Due to current backlog, you should continue to .operate under terms of your current permit, until a new permit is issued. If you have any questions, please contact the assigned permit writer. Sincerely, GA, KP4/0 �/ (11`Jeff Poupart Point Source Branch Program Supervisor IV -Cc: Central Files ayetteville Regional Office NPDES 1601 Mail Service Center, Raleigh, North Carolina 27699-1601 ' Phone: 919-707-86001 Internet: www.ncdenr.gov An Equal Opportunity \ Affirmative Action Employer— 50% Recycled 110% Post Consumer Paper horthCarolina aturaI/ Mayor, Larry G. Hagin Finance Director / Town Clerk Debra McNeill Chief of Police Ronald Starling Public Works Director Roy Lowder October 30, 2013 TOWN OF PARKTON Post Office Box 55 / 28 West David Parnell St Parkton, North Carolina 28371 Office: 910-858-3360 Fax: 910-858-9808 NC Department ofEnvironment and Natural Resources Division of Water Rcsources/NPDES Unit R16alie7M,NC cServoce9!..Ce11 1-§t167r igh Subject: NPDES Perrmt-Renewal Town f Parkton S-Pcellilloun ffN, C0 02 Robeson6921 lE@R OWIE OCT 2 8 2013 DENR-WATER QUALITY POINT SOURCE BRANCH ear Permitting Unit: Alderman Al McMillan Alf Parnell Robin Hill Benton Finley Fran Meinert The Town of Parkton is submitting the renewal application package for:, Npl3ES permit #NC0026921. The permit application consists of: - Cover letter - One original ‘offonn 2A —I•TF'DES Application for Permit Renewal - Topographic Map - Process Flow Schematic and Narrative - Two additional copies of Renewal Package The Town would like to request the:fbllowing c angeS.to the'permit. A. The permit currently contains a monthly monitoring requirement and daily maximum limit for mercury. We are requesting that monitoring/limit be removed from the permit. Effluent monitoring over the past three years shows that, with one exception, mercury levels are fairly consistent. The wastewater 'flow to the plant is entirely domestic/commercial with no known contributors of mercury, such as dental offices. We expect mercury levels to remain in the same range unless affected by any new industrial or commercial development. We have no explanation for the one high mercury level, except that it is such an anomaly that it must be due to sampling errors. We ask that this number not be used in the reasonable potential analysis. B. We request that quarterly toxicity testing requirement be removed from the permit. As stated above, the flow to the wastewater treatment plant is domestic in nature and does not meet the definition as a discharger of "complex" wastewater as defined in the Department's August 1999 memo which was written to clarify the application of WET limits in permits. C. It is requested that the upstream and downstream monitoring requirements for Dissolved Oxygen and Temperature be removed from the permit. The receiving stream flows through swampland/woodland that is bordered by farmland. The testing of DO and Temperature at the two monitoring sites has no correlation to the discharge from the wastewater plant. DO in the stream is more likely to be affected by agricultural runoff, natural decay, rainfall, etc and any increase or decrease in DO cannot be definitely attributed to the treatment plant. Again, since the wastewater flow is domestic in nature with no industrial dischargers that could potentially discharge high temperature waste it is improbable that the discharge will affect stream temperature. D. It is requested that conductivity monitoring be removed from the permit. A review of test results shows that the conductivity of the effluent is consistently in the range for domestic wastewater. As the wastewater is purely domestic, any changes in the conductance of the water would be attributable either to temperature or potable water characteristics. Current permit required testing for BOD5, TSS, and NH3 are sufficient to determine effluent clarity. If you have any questions or comments, please contact Roy Lowder, Public Works Director, at 252/245-6632. Sincerely, a704( )01, Al* Larry G. Hagin, Mayor Town of Parkton Town of Parkton WWTP Receiving Stream: Dunns Marsh Drainage Basin: Lumber River Latitude: 34° 53' 02" N Longitude: 78° 59' 59" W Permitted Flow: 0.200 MGD Sub -Basin: 03-07-53 State Grid / USGS Quad: H 23NW / Hope Mills, N.C. Stream Class: C; Sw Upstream Monitoring Point atNCSR.1725_ North NPDES Permit NC0026921 Robeson County Influent Pump Station FIGURE I-2 MAIN PROCESS FLOW PATTERN Sludge Drying Beds Post ' Aeration Steps Chlorine Contact Tank Aerobic Digester Operations Building Clarifier #2 Oxidation Ditch #2 Recycle Sludge Pumping Splitter Box Oxidation Ditch #1 Town of Parkton WWTP Treatment Plant Narrative NPDES NC0026921 The Town of Parkton WWTP consists of the following units: • Barscreen • Two parallel operating oxidation ditches • Two parallel operating secondary clarifiers • Two sludge recirculation and waste pump stations • Parshall flume and flow meter • Chlorine contact basin • Post aeration • Aerobic sludge digester • Sludge drying beds The Parkton WWTP is an activated sludge system using oxidation ditches for aeration and conventional clarifiers for sedimentation. Each clarifier is equipped with a sludge pumping station which can be used to recycle the activated sludge to the aeration process or waste the sludge to the aerobic digester. Effluent from the activated sludge process is disinfected in the chlorine contact basin. After disinfection, post aeration is accomplished by cascade steps to insure maintenance of minimum dissolved oxygen levels. FACILITY NAME AND PERMIT NUMBER: Pai 1U.IJI i V V v vri 1 NC002692 PERMIT ACTION REQUESTED: Rcnn.vval RIVER BASIN: .CambT.R OGr FORM 2A NPDES NPDES APPLICATION OVERVIEW Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet and a "Supplemental Application Information" packet. The Basic Application Information packet is divided into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental Application Information packet. The following items explain which parts of Form 2A you must complete. BASIC APPLICATION INFORMATION: A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12. B. Additional Application Information for Applicants with a Design Flow z 0.1 mgd. All treatment works that have design flows greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6. C. Certification. All applicants must complete Part C (Certification). SUPPLEMENTAL APPLICATION INFORMATION: D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets one or more of the following criteria must complete Part D (Expanded Effluent Testing Data): 1. Has a design flow rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to provide the information. E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing Data): 1. Has a design flow rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to submit results of toxicity testing. F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges and RCRA/CERCLA Wastes). SlUs are defined as: 1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and 40 CFR Chapter I, Subchapter N (see instructions); and 2. Any other industrial user that: a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain exclusions); or b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the treatment plant; or c. Is designated as an SIU by the control authority. G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer Systems). ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION) FACILITY NAME AND PERMIT NUMBER: Parkton WV4ITF NC0026021 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber River BASIC APPLICATION INFORMATION PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS: All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet. A.1. Facility Information. Facility Name PART:TON AIM Mailing Address PO Pc:: 55 Parkton. NC 28371 Contact Person Roy Lowder Title Public Works Director Telephone Number (910)858-3350 Facility Address NCSR 1724 (south of Parkton (not P.O. Box) A.2. Applicant Information. If the applicant is different from the above, provide the following: Applicant Name Mailing Address Contact Person Title Telephone Number ( ) Is the applicant the owner or operator (or both) of the treatment works? 0 owner ® operator Indicate whether correspondence regarding this permit should be directed to the facility or the applicant. ® facility 0 applicant A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works (include state -issued permits). NPDES PSD UIC Other Parkton Coiiection System: Vkr0CSuutoa RCRA Other A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.). Name Population Served Type of Collection System Ownership Total population served FACILITY NAME AND PERMIT NUMBER: Parkton WW1?, NCOO26921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber Rive; A.S. Indian Country. a. Is the treatment works located in Indian Country? ❑ Yes ®No b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows through) Indian Country? ❑ Yes ® No A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period with the 12th month of "this year" occurring no more than three months prior to this application submittal. a. Design flow rate 0.200 mgd Two Years Ago b. Annual average daily flow rate 0.007 mqd c. Maximum daily flow rate 0.295 mq Last Year This Year 0.072 m d 0.149 mqd 0.198 ma 0.506 mq A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent contribution (by miles) of each. ® Separate sanitary sewer 100 ❑ Combined storm and sanitary sewer A.B. Discharges and Other Disposal Methods. a. Does the treatment works discharge effluent to waters of the U.S.? Ei Yes 0 No If yes, list how many of each of the following types of discharge points the treatment works uses: i. Discharges of treated effluent ii. Discharges of untreated or partially treated effluent iii. Combined sewer overflow points iv. Constructed emergency overflows (prior to the headworks) v. Other b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments that do not have outlets for discharge to waters of the U.S.? 0 Yes If yes, provide the following for each surface impoundment: Location: NA 100 ❑ No Annual average daily volume discharge to surface impoundments) NA mgd Is discharge ❑ continuous or 0 intermittent? c. Does the treatment works land -apply treated wastewater? 0 Yes ❑c No If yes, provide the following for each land application site: Location: NA Number of acres: NA Annual average daily volume applied to site: N a mgd Is land application ❑ continuous or 0 intermittent? d. Does the treatment works discharge or transport treated or untreated wastewater to another treatment works? 0 Yes 0 No FACILITY NAME AND PERMIT NUMBER: Parkton VVVUTP, NCOO26921 PERMIT ACTION REQUESTED Renewal f� RIVER BASIN: Lumber River If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works (e.g., tank truck, pipe). na If transport is by a party other than the applicant, provide: Transporter Name Mailing Address Contact Person Title Telephone Number ( ) For each treatment works that receives this discharge provide the following: Name Mailing Address Contact Person Title Telephone Number ( ) If known, provide the NPDES permit number of the treatment works that receives this discharge Provide the average daily flow rate from the treatment works into the receiving facility. mgd e. Does the treatment works discharge or dispose of its wastewater in a manner not included in A.B. through A.8.d above (e.g., underground percolation, well injection): 0 Yes ® No If yes, provide the following for each disposal method: Description of method (including location and size of site(s) if applicable): Annual daily volume disposed by this method: Is disposal through this method 0 continuous or 0 intermittent? FACILITY NAME AND PERMIT NUMBER: Parkton WUUTP, NCOO26921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber River WASTEWATER DISCHARGES: If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outran (including bypass points) through which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question A.8.a, go to Part B. "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd." A.9. Description of Outfall. a. Outfall number 001 b. Location Town of Parkton 28371 (City or town, if applicable) Robeson (Zip Code) NC (County) 34°53'02"N (State) 78°59'59'11J (Latitude) (Longitude) c. Distance from shore (if applicable) NA ft. d. Depth below surface (if applicable) NA ft. e. Average daily flow rate 0.149 mgd f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.) If yes, provide the following information: Number f times per year discharge occurs: NA Average duration of each discharge: NA Average flow per discharge: NA mgd Months in which discharge occurs: NA g. Is outfall equipped with a diffuser? ❑ Yes -El No A.10. Description of Receiving Waters. a. Name of receiving water Dunn's Marsh Swamo b. Name of watershed (if known) United States Soil Conservation Service 14-digit watershed code (if known): c. Name of State Management/River Basin (if known):Lumber River United States Geological Survey 8-digit hydrologic cataloging unit code (if known): d. Critical low flow of receiving stream (if applicable) acute cfs chronic cfs e. Total hardness of receiving stream at critical low flow (if applicable): mg/l of CaCO3 FACILITY NAME AND PERMIT NUMBER: Parkton VVWTP, NC00026921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber River A.11. Description of Treatment a. What level of treatment are provided? Check all that apply. ❑ Primary El Secondary ❑ Advanced ❑ Other. Describe: - b. Indicate the following removal rates (as applicable): Design BOD5 removal or Design CBOD5 removal 90 % Design SS removal 90 % Design P removal NA % Design N removal NA % Other % c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe: Chlorine Gas If disinfection is by chlorination is dechlorination used for this outfall? ❑3 Yes ❑ No Does the treatment plant have post aeration? fiL4 Yes ❑ No A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent Is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QAIQC requirements of 40 CFR Part 136 and other appropriate CIA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart Outfall number. 001 PARAMETER MAXIMUM DAILY VALUE AVERAGE DAILY VALUE Value Units Value Units Number of Samples pH (Minimum) 6.2 , s.u. << pH (Maximum) 8.0 s.u. Flow Rate 0.506 nig 0.102 mgd 33 Temperature (Winter) 14 C 13 C 5 Temperature (Summer) 26 C 24 C 5 • For pH please report a minimum and a maximum daily value POLLUTANT MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE ANALYTICAL METHOD MLIMDL Conc. Units Conc. Units Number of Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS BIOCHEMICAL OXYGEN DEMAND (Report one) BOD5 25 Mgil 9 Mgll 12 S:MA52101B 2.0 CBOD5 FECAL COLIFORM 102 Cot/100ml 6 Co1/100m1 12 SM9222D 1 TOTAL SUSPENDED SOLIDS (TSS) 21 Mgli 9 Ma/i 12 Silii2540D 25.0 END OF PART A. REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE FACILITY NAME AND PERMIT NUMBER: Parkton WWTP, NC0026921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber ever BASIC APPLICATION INFORMATION PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR EQUAL TO 0.1 MGD (100,000 gallons per day). All applicants with a design flow rate z 0.1 mgd must answer questions B.1 through B.6. All others go to Part C (Certification). B.1. Inflow and Infiltration. Estimate the average number of gallons per day 40.000 gpd that flow into the treatment works from inflow and/or infiltration. connections to the sewer main. Briefly explain any steps underway or planned to minimize inflow and infiltration. Smoke test to locate inflow sources. Repair/replace all sewer B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire area.) a. The area surrounding the treatment plant, including all unit processes. b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable. c. Each well where wastewater from the treatment plant is injected underground. d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within'/. mile of the property boundaries of the treatment works, and 2) listed in public record or otherwise known to the applicant e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed. f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail, or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed. B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g., chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow rates between treatment units. Include a brief narrative description of the diagram. B.4. OperationfMaintenance Performed by Contractor(s). Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a contractor? ❑ Yes © No If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional pages if necessary). Name: Mailing Address: Telephone Number. ( ) Responsibilities of Contractor. B.S. Scheduled Improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5 for each. (If none, go to question B.6.) a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule. b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies. 0 Yes ❑ No FACILITY NAME AND PERMIT NUMBER: Parkton WWTP, NC0026921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber River c. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable). d. Provide dates imposed applicable. For improvements applicable. Indicate Implementation Stage - Begin Construction - End Construction - Begin Discharge - Attain Operational e. Have appropriate Describe briefly: by any compliance schedule planned independently dates as accurately as possible. Level pennitslclearances conceming other or any actual dates of completion for the implementation steps listed of local, State, or Federal agencies, indicate planned or actual completion Schedule Actual Completion MM/DD/VYYY MM/DD/YYYY below, as dates, as Yes ❑ No / / / / / / / / / / / / / / / / Federal/State requirements been obtained? 0 B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD Applicants that discharge to waters of the US must effluent testing required by the permitting authority on combine sewer overflows in this section. Ali information using 40 CFR Part 136 methods. In addition, this data QA/QC requirements for standard methods for analytes based on at least three pollutant scans and must be Outfall Number: 001 ONLY). provide effluent testing data for the following parameters. Provide for each outfall through which effluent is discharged. Do not include the indicated information conducted other appropriate data must be reported must be based on data collected through analysis must comply with QA/QC requirements of 40 CFR Part 136 and not addressed by 40 CFR Part 136. At a minimum effluent testing no more than four and on -half years old. POLLUTANT MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE • ANALYTICAL METHOD ML/MDL Conc. Units Conc. Units Number of Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS AMMONIA (as N) 11.8 Mg/I 7.5 Mg/I 4 SM4500 0.1 CHLORINE (TOTAL RESIDUAL, TRC) 42 Ugli 29 Ugl1 4 4500 cl-g <17 DISSOLVED OXYGEN 9.7 Mg/1 36 Nig/I 4 4500-O-C TOTAL KJELDAHL NITROGEN (TKN) 8.32 Mg/I 7.3 Mg/I 4 SM4500 0.25 NITRATE PLUS NITRITE NITROGEN 2.8 Mg/1 1.63 Mg/l 4 EPA300.0 0.05 OIL and GREASE PHOSPHORUS (Total) 1.01 118g.1 0.78 Mg/l 4 EPA200.8 0.02 TOTAL DISSOLVED SOLIDS (TDS) OTHER END OF PART B. REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE FACILITY NAME AND PERMIT NUMBER: Parkton WWTP, NC0026921 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Lumber River BASIC APPLICATION INFORMATION PART C. CERTIFICATION All applicants must complete the Certification Section. Refer to Instructions to determine who is an officer for the purposes of this certification. All applicants must complete all applicable sections of Foram 2A, as explained in the Application Overview. Indicate below which parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed Form 2A and have completed all sections that apply to the facility for which this application is submitted. Indicate which parts of Form 2A you have completed and are submitting: 0 Basic Application Information packet Supplemental Application Information packet: ❑ Part D (Expanded Effluent Testing Data) ❑ Part E (Toxicity Testing: Biomonitoring Data) ❑ Part F (Industrial User Discharges and RCRA/CERCLA Wastes) ❑ Part G (Combined Sewer Systems) ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION. I certify under penalty of law that this document and at attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name and official title Larry G. Hagin, Mayor a Signature aA.711 . grbit, Telephone number (910) 858-3360 Date signed Upon request of the permitting authority, you must submit any other information necessary, to assure wastewater treatment practices at the treatment works or identify appropriate permitting requirements. SEND COMPLETED FORMS TO: NCDENR/ DWQ Attn: NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617