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Home My WebLink AboutNC0021881_Renewal Application_20190130 /46 ..E.3.Er, N4, ROY COOPER - =i-9 Governor �, MICHAEL S.REGAN � " Secrctvey LINDA CULPEPPER NORTH CAROLINA Director Environmental Quality February 01, 2019 Gordon Hargrove Town of Lake Waccamaw PO Box 145 Lake Waccamaw, NC 28450-0145 Subject: Permit Renewal Application No. NC0021881 Lake Waccamaw WWTP Columbus County Dear Applicant: The Water Quality Permitting Section acknowledges the January 30, 2019 receipt of your permit renewal application and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made. Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit.The permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a timely manner to requests for additional information necessary to allow a complete review of the application and renewal of the permit. Information regarding the status of your renewal application can be found online using the Department of Environmental Quality's Environmental Application Tracker at: https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker If you have any additional questions about the permit, please contact the primary reviewer of the application using the links available within the Application Tracker. Sincerely, 31/01N 404.q.4 Wren Thedford Administrative Assistant Water Quality Permitting Section ec: WQPS Laserfiche File w/application .DE `rj =y`d tit tf Env� rn Quaiity D •�f 1":eter Resources um 1".North min Caralns on R gDepsrtm:taI0ffi 1127 Caronrctrsa-1 entsl Drve Extens I an Iitisan L""7trnina on,NorthResour Csro�ns 28445 irw zra as�u 91079o-7215 t.°710//041/ 0/c/X1//e . ON THE SHORES OF NORTH CAROLINA'S LARGEST NATURAL LAKE 11J g1, P.O. Box 145 \r Lake Waccamaw, North Carolina 28450 (910) 646-3700 4401.-r#IPP (910) 646-3860 Fax *AC G P email:lwtownmanager@embargmail.com January 28, 2019 NC Department of Environmental Quality Division of Water Resources/NPDES Unit 1617 Mail Service Center Raleigh,NC 27699-1617 Subject: NPDES Permit Renewal Town of Lake Waccamaw NPDES Permit#NC0021881 Columbus County Dear Permitting Unit: The Town of Lake Waccamaw is submitting the renewal application package for NPDES permit #NC0021881. The permit expiration date is July 31, 2019. The permit application package consists of: - Cover letter - One original of Form 2A—NPDES Application for Permit Renewal, Parts: A, B, C and E - Topographic Map - Process Flow Schematic - One additional copy of Renewal Package The Town would like to request the following changes to the permit: • The Town requests that quarterly monitoring for Chronic Toxicity be removed from the permit. In your online guidance, there is an August 2, 1999 memorandum that states that toxicity testing will be required at "major" facilities or those facilities discharging "complex"wastewaters. The flow to the WWTP is a combination of domestic discharges from residential and commercial sources with no industrial contributions and should not be subject to the toxicity requirement. • It is requested that the upstream and downstream monitoring requirements for Dissolved Oxygen and Temperature be removed from the permit. The discharge is into a swamp,not into a defined water course. The swamp is generally not flowing in the direction of the river. In fact, for the most part,the flow from the river will flood the swamp and push the water away from the river. Because the discharge is into a swamp there is no definitive upstream or downstream sampling sites. 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. • The analytical results of the Total Mercury sample sent to the Lab for analysis have not yet been received. A copy of the results will be forwarded to you as soon as it arrives. We appreciate your consideration of these requests. If you have any questions or comments, please contact Mike Prostinak, WWTP Operator in Responsible Charge, at 910/918-3257. Sincerely, A .A C4(k• Gordon Hargrov e Town of Lake Waccamaw FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber FORM 2A NPDES FORM 2A APPLICATION OVERVIEW 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. > treatment works that have design flows _0.1 mgd. All B. Additional Application Information for Applicants with a Design Flow 9 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). SIUs 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) EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 1 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber 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 Lake Waccamaw WWTP Mailing Address PO Box 145 Lake Waccamaw,NC 28450-0145 Contact Person Mike Prostinak Title WWTP ORC Telephone Number (910)918-3257 Facility Address 1692 Dupree Landing Road (not P.O.Box) Lake Waccamaw,NC A.2. Applicant Information. If the applicant is different from the above,provide the following: Applicant Name Town of Lake Waccamaw --- Mailing Address PO Box 145 Lake Waccamaw, NC 28450-0145 Contact Person Gordon Hargrove Title Town Manager Telephone Number (910)646-3700 Is the applicant the owner or operator(or both)of the treatment works? ® owner ® operator Indicate whether correspondence regarding this permit should be directed to the facility or the applicant. ® facility ® 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 NC0021881 _ PSD UIC Other WOCS00203 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 Town of Lake Waccamaw 1.480 Separate Municipal served 1,480 Totalpopulation EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 2 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw, NC0021881 Renewal Lumber A.5. 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 12'h month of"this year"occurring no more than three months prior to this application submittal. a. Design flow rate 0.4 mgd Two Years Ago Last Year This Year b. Annual average daily flow rate 0.24 0.25 0.24 c. Maximum daily flow rate 1.17 1.87 2.41 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 0 Combined storm and sanitary sewer % A.8. Discharges and Other Disposal Methods. a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No If yes,list how many of each of the following types of discharge points the treatment works uses: i. Discharges of treated effluent 1 ii. Discharges of untreated or partially treated effluent NA iii. Combined sewer overflow points NA iv. Constructed emergency overflows(prior to the headworks) NA v. Other NA 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.? ❑ Yes ® No If yes,provide the following for each surface impoundment: Location: Annual average daily volume discharge to surface impoundment(s) mgd Is discharge 0 continuous or El intermittent? c. Does the treatment works land-apply treated wastewater? 0 Yes Z No If yes,provide the following for each land application site: Location: Number of acres: Annual average daily volume applied to site: mgd Is land application El continuous or 0 intermittent? d. Does the treatment works discharge or transport treated or untreated wastewater to another treatment works? ❑ Yes ® No EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 3 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber 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). 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.8.through A.8.d above(e.g.,underground percolation,well injection): ❑ Yes ® No If yes,provide the following for each disposal method: Description of method(including location and size of site(s)if applicable): volume disposed bythis method: Annual daily p Is disposal through this method ❑ continuous or ❑ intermittent? EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 4 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC001 881 Renewal Lumber WASTEWATER DISCHARGES: If you answered"Yes"to question A.8.a,complete questions A.9 through A.12 once for each outfall(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 Lake Waccamaw 28450-0145 (City or town,if applicable) (Zip Code) Columbus NC (County) (State) 34°16'56" 78°33'30" (Latitude) (Longitude) c. Distance from shore(if applicable) NA ft. d. Depth below surface(if applicable) NA ft. e. Average daily flow rate 0.24 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 flowper discharge: NA mgd 9 Months in which discharge occurs: NA g. Is outfall equipped with a diffuser? 0 Yes ® No A.10. Description of Receiving Waters. a. Name of receiving water UT to Boque Swamp b. Name of watershed(if known) Lumber United States Soil Conservation Service 14-digit watershed code(if known): c. Name of State Management/River Basin(if known): 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/I of CaCO3 EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 5 of 22 FACILITY NAME AND PERMIT NUMBER: 1 PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 I Renewal Lumber A.11. Description of Treatment a. What level of treatment are provided? Check all that apply. ❑ Primary ® Secondary ❑ Advanced ❑ Other. Describe: b. Indicate the following removal rates(as applicable): Design BOD5 removal or Design CBOD5 removal 85 Design SS removal 85 Design P removal NA yo Design N removal NA Other NA c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season,please describe: Chlorination If disinfection is by chlorination is dechlorination used for this outfall? ❑ Yes El No Does the treatment plant have post aeration? ® 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 QA/QC requirements of 40 CFR Part 136 and other appropriate QA/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 MAXIMUM DAILY VALUE AVERAGE DAILY VALUE PARAMETER Value Units Value Units Number of Samples pH(Minimum) 6.0 s.u. pH(Maximum) 10.2 s.u. Flow Rate 2.41 MGD 0.24 MGD 365 Temperature(Winter) 16.2 °C 13.0 °C 60 Temperature(Summer) 26.6 °C 26.3 °C 60 *For pF please report a minimum and a maximum daly value MAXIMUM DAILY AVERAGE DAILY DISCHARGE DISCHARGE ANALYTICAL POLLUTANT — — METHOD j MLtMOL Number of Conc. L—._ Units �Conc: Units Samples 1 1___ L CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS BIOCHEMICAL OXYGEN BOD5 _13.0 mg/L 0.79 mg/L 52 5210E-11 2 DEMAND(Report one) CBOD5 NA NA NA NA NA NA NA FECAL COLIFORM 9100 colonlesiloon*I 16.98 colon7,'"00 150 9222D-06 1 TOTAL SUSPENDED SOLIDS(TSS) 17.0 mg/L 5.38 _ mg/L 52 2540D-11 2.5 END OF PART A. REFER TO THE APPLICATION OVERVIEW(PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE , . „ ....: — — — -- EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 6 of 22 FACILITY NAME AND PERMIT NUMBER: I PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber BASIC APPLICATION INFORMATION PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR i EQUAL TO 0.1 MGD(100,000 gallons per day). All applicants with a design flow rate>_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 that flow into the treatment works from inflow and/or infiltration. 6,000 gpd Briefly explain any steps underway or planned to minimize inflow and infiltration. No extensive repairs or rehabilitation are planned for the collection systems. In the process of water meter reading, if Broken clean-outs are observed,they will be repaired. In the normal course of work,the CS is observed and repaired as needed. 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 i applicable. wastewater is discharged from the treatment plant. Include outfalls from bypass piping,in 9,if PP licable. 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. Operation/Maintenance 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 El 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: NA Mailing Address: NA Telephone Number: ( ) Responsibilities of Contractor: B.5. 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. NA b. Indicate whether the planned improvements or implementation schedule are required by local,State,or Federal agencies. ❑ Yes ❑ No EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 7 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber c. If the answer to B.5.b is"Yes,"briefly describe,including new maximum daily inflow rate(if applicable). d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below,as applicable. For improvements planned independently of local,State,or Federal agencies,indicate planned or actual completion dates,as applicable. Indicate dates as accurately as possible. Schedule Actual Completion Implementation Stage MM/DD/YYYY MM/DD/YYYY -Begin Construction / / / / -End Construction / / -Begin Discharge / / / / -Attain Operational Level / / / / e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? 0 Yes ❑ No Describe briefly: B.6. EFFLUENT TESTING DATA(GREATER THAN 0.1 MGD ONLY). 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 combine 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 QA/QC requirements of 40 CFR Part 136 and other appropriate QA/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 pollutant scans and must be no more than four and on-half years old. Outfall Number: 001 MAXIMUM DAILY ! AVERAGE DAILY DISCHARGE DISCHARGE ANALYTICAL POLLUTANT I METHOD MUMDL Cons. Units Conc. Units Number of Samples -1 CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS AMMONIA(as N) 23.0 mg/L 0.79 mg/L 52 350.1 R2-93 _ 0.1 CHLORINE(TOTAL 49.0 mg/L 18.4 mg/L 104 SM 4500 CL G 17 RESIDUAL,TRC) DISSOLVED OXYGEN 14.4 mg/L 7.96 mg/L 52 SM 4500 O G na TOTAL KJELDAHL 1.66 mg/L 1.41 mg/L 4 351.2 R2-93 0.25 NITROGEN(TKN) g 9 NITRATE PLUS NITRITE 13.7 mg/L 4 353.2 R2-93 0.05 NITROGEN 23.88 mglL g OIL and GREASE NA NA NA NA NA NA NA PHOSPHORUS(Total) 2.7 mg/L 1.97 mg/L 4 365.4-74 0.02 TOTAL DISSOLVED SOLIDS NA NA NA NA NA NA NA (TDS) OTHER TOTAL NITROGEN 25.1 mg/L 15.11 mg/L 4 Calculated NA ENDPARTB. REFER TO THE APPLICATION OVERVIEW (PAGE 1)TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE i, EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 8 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw VVVVTP, NC0021881 Renewal Lumber 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 Form 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: 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) D Part G(Combined Sewer Systems) ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION. I certify under penalty of law that this document and all 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 Gordon Hargrove y� �� Q Signature G. y 1 C1' °11 —" Telephone number (910)646-3700 Date signed 0 ( l �Z I 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 EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 9 of 22 1..,„„ . .,• • • • cs!„in.7...z.:;:- .2.&71,,,i;raik--.C:it'-'01:14' •41,,•---' :I "aZn!-V..;1';:;*;$.4,'-ri,..•...."* .- -,....- - -4 : Is'. :".• '',.'. r :.s,'„ '•.-. , r..\ . :._. .,-7- .... k•..•, „••„•'`. .7 ,‘„,..,;! 167....''.-''!•.. .:...1 •, . . • -Z I! ••-. ::. •.: (--*) • . . . . . . . •\ a ..:.Ii, \ ''.-.** ''.71b7-'..a/ i'-dii;.. ti .;-:tA-ff...--24.7•;7:!,.v,5-...zi-. '..... -.......::. . -.4..tf._,.... -.. :i:-,,7.3,1.4...g.:.6:437-!:•••4••••.:., ,-. ,. -f ..: ".• .. III,: : -,:.-A-e-:::,i:-.......,e:r....5", -,..::• •4.• ,:_. • .7 -• 6.116. • . . ! . ••a": _ •IF ... ; .-...7',W4,...Itt...%-r°,,.. -.4' •-•.......-- .[iii3.7•-.-- . _•• 3 3, C • • --°' • - : 1-Tbe 'Otie-I:'''',--. '' '''' ' '• t: -• . — ... -,.• .. . ... ..'*--1 :,',.7.....:..:„•,•,_.:.,;,. . , . 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'`. ./e.%*;......:•,;:••• ••41:::3'2.3,---- Effl ent Process Flow at the Lake Waccamaw VWVTP 0 ►■� Effluent * -- Chamber C lorine Contact Diagesters Chamber 2nd Polishing Pond Return Sludge Line Clarifier 1st Polishing Pond Aeration Basin Grit Chamber —� Aeration Bypass influent • Line FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw VVVVTP. NC0021881 Renewal Lumber SUPPLEMENTAL APPLICATION INFORMATION PART E. TOXICITY TESTING,. ;•,,v It POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the facility's discharge points: 1)POTWs with a design flow rate greater than or equal to 1.0 mgd;2)POTWs with a pretreatment program(or those that are required to have one under 40 CFR Part 403);or 3)POTWs required by the permitting authority to submit data for these parameters. • At a minimum,these results must include quarterly testing for a 12-month period within the past 1 year using multiple species(minimum of two species),or the results from four tests performed at least annually in the four and one-half years prior to the application,provided the results show no appreciable toxicity,and testing for acute and/or chronic toxicity,depending on the range of receiving water dilution. 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 QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. • In addition,submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test conducted during the past four and one-half years revealed toxicity,provide any information on the cause of the toxicity or any results of a toxicity reduction evaluation,if one was conducted. • If you have already submitted any of the information requested in Part E,you need not submit it again. Rather,provide the information requested in question E.4 for previously submitted information. If EPA methods were not used,report the reasons for using alternate methods. If test summaries are available that contain all of the information requested below,they may be submitted in place of Part E. If no biomonitoring data is required,do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to complete. E.1. Required Tests. Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years. D chronic 0 acute E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow one column per test(where each species constitutes a test). Copy this page if more than three tests are being reported. Test number: Test number: Test number: a. Test information. Test Species&test method number Age at initiation of test Outfall number Dates sample collected Date test started Duration b. Give toxicity test methods followed. Manual title Edition number and year of publication Page number(s) c. Give the sample collection method(s)used. For multiple grab samples,indicate the number of grab samples used. 24-Hour composite Grab d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each. Before disinfection After disinfection After dechlorination EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 11 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021881 Renewal Lumber Test number: Test number: Test number: e. Describe the point in the treatment process at which the sample was collected. Sample was collected: f. For each test,include whether the test was intended to assess chronic toxicity,acute toxicity,or both Chronic toxicity Acute toxicity g. Provide the type of test performed. Static Static-renewal Flow-through h. Source of dilution water. If laboratory water,specify type;if receiving water,specify source. Laboratory water Receiving water i. Type of dilution water. If salt water,specify"natural"or type of artificial sea salts or brine used. Fresh water Salt water j. Give the percentage effluent used for all concentrations in the test series. AtitL � k k. Parameters measured during the test. (State whether parameter meets test method specifications) pH Salinity Temperature Ammonia Dissolved oxygen I. Test Results. Acute: Percent survival in 100% % effluent LC50 95%C.I. Control percent survival Other(describe) EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 12 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Lake Waccamaw WWTP, NC0021 881 Renewal Lumber Chronic: NOEC IC25 Control percent survival Other(describe) m. Quality Control/Quality Assurance. Is reference toxicant data available? Was reference toxicant test within acceptable bounds? What date was reference toxicant test run(MM/DD/YYYY)? Other(describe) E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation? ❑ Yes ® No If yes,describe: E.4. Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information,or information regarding the cause of toxicity,within the past four and one-half years,provide the dates the information was submitted to the permitting authority and a summary of the results. Date submitted: Chronic Toxicity results were submitted the months of: March,June, September, December Summary of results: (see instructions) Toxicity failed on: December 2018, March 2017, December 2017, March 2016 END OF PART E. REFER TO THE APPLICATION OVERVIEW(PAGE 1)TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE. EPA Form 3510-2A(Rev.1-99). Replaces EPA forms 7550-6&7550-22. Page 13 of 22