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Home My WebLink AboutNC0087033_Permit Issuance_20081217F WA OT�c� o� QG 9 5 Michael F. Easley, Governor State of North Carolina William G. Ross, Jr., Secretary Department of Environment and Natural Resources y Coleen H..Sullins, Director Division of Water Quality December 17; 2008 The Honorable John Ray Campbell, Mayor Town of Harmony P.O. Box 118 Harmony, North Carolina 28634 Subject: NPDES Permit Issuance Permit No. NCO087033 Harmony WWTP Iredell County Dear Mayor Campbell: Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143- 215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). The permit states the Town of Harmony can discharge municipal wastewater from the Harmony Wastewater Treatment Plant to Dutchman Creek, class C water in the Yadkin River Basin upon receipt of an authorization to construct permit and the submission of an engineer's certification. The final permit includes discharge limitations/or monitoring for flow, BOD5, ammonia nitrogen, total suspended solids, dissolved oxygen, total residual chlorine and fecal coliform. The following procedure has been recently implemented by DWQ: Total residual chlorine (TRC) compliance level changed to 50 ug/l. Effective March 1, 2008, the Division received EPA approval to allow a 50 ug/1 TRC compliance level. This change is due to analytical difficulties with TRC measurements. Facilities will still be required to report actual results on their monthly discharge monitoring report (DMR) submittals, but for compliance purposes, all TRC values below 50 ug/1 will be treated as zero. A footnote regarding this change has been added to the effluent limitations page in the draft permit. The final permit contains the following modifications that were included in the draft permit: Additional language on the Supplement to Permit Cover Sheet notes the new 0.080 MGD flow and requirements for receipt of an Authorization to Construct permit and submission of an Engineer's Certification prior to discharge. Summer and winter effluent limits for ammonia have been modified for all wasteflows to protect against instream ammonia toxicity. Revised monthly average limits and daily maximum limits have been given for 0.080 MGD, 0.115 MGD and -0.250 MGD. The requirements for quarterly chronic toxicity testing have been removed from the permit. The proposed Harmony WWTP will now have conventional wastewater treatment and the design flows will be less than 1 MGD, therefore toxicity testing can be dropped. North Carolina Division of Water Quality_ (919) 807-6300 1617 Mail Service Center FAX (919) 807-6495 Raleigh, North Carolina 27699-1617 On the Internet at http://h2o.enr.state.nc.us/ Page 2 Letter to Mayor Campbell Permit No. NC0087033 The parameter, Total Suspended Residue, has been changed to Total Suspended Solids in the effluent page and the footnotes. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall be final and binding. Please take notice that this permit is not transferable. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits, which may be required by the Division of Water Quality, or permits required by the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local governmental permits may be required. If you have any questions or need additional information, please contact Ms. Jacquelyn Nowell at telephone number (919) 807-6386. Sincerely, 1-- 4 Coleen H. Sullins Attachments cc: Central Files Mooresville Regional Office/Surface Water Protection Section Benjamin B. Thomas, P.E./West Consultants, PLLC 405 S. Sterling Street Morganton, NC 28655 Steve Coffey/Construction Grants and Loans Aquatic Toxicology Unit NPDES File/NC0087033 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, Town of Harmony is hereby authorized to discharge wastewater from a facility located at the Harmony WWTP SR 1939, southwest of Harmony Iredell County to receiving waters designated as the Dutchman Creek in the Yadkin - Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective February 1, 2009. This permit and authorization to discharge shall expire at midnight on November 30, 2013. Signed this day December 17, 2008. 4YY- &Ieen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued .to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. TOWN OF HARMONY is hereby authorized to: 1. After receiving an Authorization To Construct from the Division of Water Quality, construct and operate facilities to discharge up to 0.08 MGD. This facility will be located at Harmony Wastewater Treatment Plant, Harmony, Iredell County. 2. Upon receipt of an Authorization To Construct from the Division of Water Quality; construct and operate additional facilities needed to expand the 0.080 MGD facility to 0.115 MGD; and 3. Upon receipt of an Authorization To Construct from the Division of Water Quality, construct and operate additional facilities needed to expand the 0.115 MGD facility to 0.250 MGD; and 4. After submitting an Engineer's Certification, discharge from said treatment works at the location specified on the attached map into Dutchman Creek, which are classified C waters in the Yadkin -Pee Dee River Basin. Facility Information Latitude: 35056'22" Sub -Basin: Longitude, 80047'40" ad #: D15NE Stream Class: C Receiving Stream: Dutchman Creek 03-07-06 Facility Location North NCO087033 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 10.080 MGD] During the period beginning on the effective date of the permit and lasting until expansion above 0.080 MGD or expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Fr uenc Sample Type Sample Location Flow 0.080 MGD Continuous Recording Influent or Effluent BOD, 5-day, 202C 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent Total Suspended Solids 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent NH3 as N (April 1— October 31 5.4 mg/L 16.2 mg/i Weekly Composite Effluent NH3 as N November 1— March 31 15.8 mg/L 35.0 mg/I Weekly Composite Effluent Dissolved Oxygen2 (April 1 - October 31) Weekly Grab Effluent Dissolved Oxygen2 November 1— March 31 Weekly Grab Effluent N 6.0 — 9.0 standard units Weekly Grab Effluent Total Residual Chlorine3 28 pg/L 2/Week Grab Effluent Total Nitrogen (NO2+NO3+TKN) Quarterly Composite Effluent Total Phosphorus Quarterly Composite Effluent Temperature, 2C Daily Grab Effluent Fecal Coliform eometdc mean 200 / 100 ml 400 / 100 ml Weekly Grab Effluent Notes: 1. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal). 2. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L. 3. Monitoring requirement and limit apply only if chlorine is added for disinfection. The Division shall consider all effluent total residual chlorine values reported below 50 jug/1 to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/1. There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.115 MGD] During the period beginning on expansion above 0.080 MGD and lasting until .expansion above 0.115 MGD or expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow 0.115 MGD Continuous Recording Influent or Effluent BOD, 5-day, 202C 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent Total Suspended Residue 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent NH3 as N (April 1- October 31 . 4.1 mg/L 12.3 mgll Weekly Composite Effluent NH3 as N November 1- March 31 11.7 mg/L 35.0 mg/l Weekly Composite Effluent Dissolved Oxygen2 (April 1- October 31) Weekly Grab Effluent Dissolved Oxygen2 November 1- March 31 Weekly Grab Effluent H 6.0 - 9.0 standard units Weekly Grab Effluent Total Residual Chlorine3 28 jug/L 2/Week Grab Effluent Total Nitrogen (NO2+NO3+TKN) Quarterly Composite Effluent Total Phosphorus Quarters Composite Effluent Temperature, °C Daily Grab Effluent Fecal Coliform (geometric mean 200 / 100 ml 400 / 100 ml Weekly Grab Effluent Notes: 1. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 2. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L. 3. Monitoring requirement and limit apply only if chlorine is added for disinfection. The Division shall consider all effluent total residual chlorine values reported below 50 Ng/1 to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 jig/I. There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.250 MGD] During the period beginning upon the expansion above 0.115 MGD and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement "uency Sample Type Sample Location Flow 0.25 MGD Continuous Recording Influent or Effluent BOD, 5-day, 20T 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent Total Suspended Residue 1 30.0 mg/L 45.0 mg/L Weekly Composite Influent & Effluent NHs as N (April 1- October 31 2.4 mg/L 7.2 mg/I Weekly Composite Effluent NHs as N November 1- March 31 6.3 mg/L 18.9 mg/l Weekly Composite Effluent Dissolved Oxygen2 (April 1- October 31) Weekly Grab Effluent Dissolved Oxygen2 November 1 - March 31 Weekly Grab Effluent H 6.0 - 9.0 standard units Weekly Grab Effluent Total Residual Chlorine3 28,ug/L 2/Week Grab Effluent Total Nitrogen (NO2+NO3+TKN) Quarterly Composite Effluent Total Phosphorus Quarterly Composite Effluent Temperature, °C Daily Grab Effluent Fecal Coliform (geometric mean 200 / 100 ml 400 / 100 ml Weekly Grab Effluent Notes: 1. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 2. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L. 3. Monitoring requirement and limit apply only if chlorine is added for disinfection. The Division shall consider all effluent total residual chlorine values reported below 50,pg/l to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 Ng/l. There shall be no discharge of floating solids or visible foam in other than trace amounts. Statesville Record & Landmark Advertising Affidavit North Carolina Community Newspapers PO Box 968 Hickory, NC 28603 NC DENR/DWQ BUDGET OFFICE 1617 MAIL SERVICE CENTER RALEIGH, NC 27699 Account Number 3142720 Date October 25, 2008 Date Category Description Ad Number Ad Size 10/25/2008 Legal Notices PUBLIC NOTICE STATE OF NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION/NPDES UNIT 1617 MAIL SERVICE CENTER RALEIGH, NC 27699-1617 NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT PUBLIC NOTICE STATE OF NORTH CAROLINA EN 0001121218 2 x 56 L On the basis of thorough staff review and applica- tion of NC General Statute 143.215.1 and 15A NCAC 02H.0109 and other lawful standards and regula- tions, the North Carolina Environmental Manage- ment Commission proposes to issue a National Pollutant Discharge Elimination System (NPDES) wastewater discharge permit to the person(s) list- ed below effective 45 days from the publish date of this notice. Written comments regarding the proposed permit will be accepted until 30 days after the publish date of this notice. All comments received prior to that date are considered in the final determina- tions regarding the proposed permit. The Director of the NC Division of Water Quality may decide to hold a public meeting for the proposed permit, should the Division receive a significant degree of public interest. Copies of the draft permit and other supporting in- formation on file used to determine conditions ----present in the draft permit are available upon re- quest and payment of the costs of reproduction. Mail comments and/or requests for information to the NC Division of Water Quality at the above ad- dress or call Dina Sprinkle (919) 807-6304 at the Point Source Branch. Please Include the NPDES permit number (below) in any communication. In- terested persons may also visit the Division of Wa- ter Quality at 512 N. Salisbury Street, Raleigh, NC 27604-1148 between the hours of 8:00 a.m. and 5:00 p.m. to review information on file. The Town of Harmony in Harmony, North Carolina has applied for renewal of NPDES permit NC0087033 for its proposed Harmony WWTP in Iredell County. This proposed facility is permitted to discharge treated wastewater to Dutchman Creek in the Yadkin -Pee Dee River Basin. Current- ly, ammonia nitrogen and total residual chlorine are water quality limited. This discharge may af- fect future allocations in this portion of the water- shed. Publish: October 25, 200& Media General Operations, Inc. Publisher of Statesville Record & Landmark Iredell County Before the undersigned, a Notary Public of Catawba County, North Carolina, duly commissioned, qualified, and authorized by law to administer oaths, in said County and State; that he/she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a copy of which is attached hereto, was published in the Statesville Record & Landmark on the following dates: 10/25/2008 and that the said newspaper in which such notice, or legal advertisement was published, was a newspaper meeting all the requirements and qualifications of Section 1-597 of the General Statutes of North Carolina. As ' ant Bookkeeper ';4--e- Newspaper reference: 0001121218 ``tj1111rrrtii .00 Sworn to and subscribed before me, this day of;� 2008 A � 0 T j Motaryipubfic A vBL�G My Commission expires: / Or� flllll THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO087033 Facility Information Applicant/FacilityName: Town of Harmony WWTP Applicant Address: P.O. Box 118 Harmony NC 28634 Facility Address: Not constructed yet Permitted Flow Requesting 0.080 MGD, permitted 0.115 MGD/ 0.250 MGD Type of Waste: Domestic Facility/Permit Status: Proposed / Renewal Facility Classification II County: Iredell Miscellaneous Creek Summer 7 10 (cfs) 0.71 Winter 7Q10 (cfs): 1.12 Average Flow (cfs): 4.52 IWC (%): 15%, 20%,35 % SUMMARY OF FACILITY AND WASTELOAD ALLOCATION Note that the Harmony WWTP has not yet been constructed. Facility is requesting renewal of permit with modifications: 1) a lower permitted flow of 0.080 MGD in addition to keeping the existing permitted flows of 0.115 MGD and 0.250 MGD, 2) proposed wastewater treatment system will no longer have constructed wetlands as a part of the treatment. A conventional activated sludge system is now planned. Proposed facility would still discharge to Dutchman Creek, a class C water, in subbasin 030706 in the Yadkin River Basin. Dutchman Creek is not listed on the 303(d) list for impaired streams. The permit was initially issued in November 2001. An ATC was issued in December 2002. From previous 2004 factsheet: The Town currently has no public WWTP. Failing septic tank systems throughout the Town are treating wasteuxiter from residences and businesses. Harmony requested speculative limits for a proposed system from DWQ and was provided the following tentative limits on April 23, 1999. BOD5 TSS Dissolved Oxygen NH3-N NH3-N Fecal Coliform Residual Chlorine pH 30 mg/1 30 mg/1 5 mg/l 2.4 mg/I (summer) 4.7 mg/1(winter) 200/IOOmI 28 µg/1 6-9 SU These limits were included in the issuance of the permit in 2001. In the ATC issued in 2002, the flow limit was lowered to 0.115 MGD to prevent exceeding the recommended ammonia loading for wetlands. Limit may be increased at a later date with proven success of the system Harmony WWTP Fact Sheet NPDES Renewal Page i CURRENT PERMITTING INFORMATION Town of Harmony submitted a modification request and an early permit renewal at NPDES recommendation. Town is no longer building a constructed wetland for treatment. They're now going with a more conventional treatment system with flow equalization, aeration, tertiary filters, uv disinfection. Requesting lower flow of 0.080 MGD as initial design flow, but still want additional flow pages of 0.115MGD and 0.250 MGD. Most existing limits will be renewed, however NH3 limits will be re-evaluated and developed for protection against NH3 toxicity instream. TOXICITY TESTING: Recommended Requirement in original permit: Chronic Ceriodaphnia P/F @ 35% Jan Apr July Sept. Recommendation at renewal: Recommend that chronic toxicity testing requirement be dropped at all wasteflows. Toxicity testing not normally recommended for facilities with mostly domestic wastewater and less than 1 MGD. Previous testing must have recommended because of uncertainty of treatment with the previously proposed constructed wetlands and protection of receiving waters. COMPLIANCE SUMMARY: Facility not yet built. INSTREAM MONITORING: No instream monitoring recommended PROPOSED CHANGES: ➢ Add an effluent page for initial design flow of 0.08 MGD. Maintain an interim flow of 0.115 and 0.25 MGD for future expansion. ➢ Will modify the NH3 for all flows based on protection against ammonia toxicity. Previous NH3 limits were based on treatment technology of constructed wetlands. New NH3 limits will be less stringent because conventional treatment system will be built. ➢ Will delete all chronic toxicity testing because of primarily domestic wastewater and proposed design flows are less than 1 MGD. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: 09/ 10/2008 Permit Scheduled to Issue (Tentative): 11/03/2008 Tentative Effective Date: 12/01/2008 STATE CONTACT: If you have any questions on any of the above information or on the attached permit, please contact Jackie Nowell at (919) 807-6386. We REGIONAL OFFICE COMMENT: Harnionv WWTP Fact Sheet NPDES Renewal Page 2 NAME: NPDES SUPERVISOR COMMENT: DATE: NAME: DATE: Harmony XVWTP Tact Sheet NPDES Renewal Page 3 lilh��/ lfick(7ory-_ a6 tltw6a VVVVTP Harmony WWTP Dutchman Creek Class C Residual Chlorine Ammonia as NH3 (summer) 7Q10 (CFS) 0.71 7010 (CFS) 0.71 DESIGN FLOW (MGD) 0.08 DESIGN FLOW (MGD) 0.08 DESIGN FLOW (CFS) 0.124 DESIGN FLOW (CFS) 0.124 STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0 UPS BACKGROUND LEVEL (I 0 UPS BACKGROUND LEVEL 0.22 IWC (%) 14.87 IWC (%) 14.87 Allowable Concentration (ugi 114.34 Allowable Concentration (m 5.47 Ammonia as NH3 (winter) 7Q10 (CFS) 1.12 Fecal Limit 200/100mi DESIGN FLOW (MGD) 0.08 Ratio of 5.7 :1 DESIGN FLOW (CFS) 0.124 STREAM STD (MG/L) 1.8 UPS BACKGROUND LEVEL 0.22 IWC (%) 9.97 Allowable Concentration (m 16.07 Y P33 NC00260d'd- 9/9/2008 NCO087033 Facility: Harmony WWTP Discharge to: Dutchman Creek Stream class and index #: C Residual Chlorine Ammonia as NH3 (summer) 7010 (CFS) 0.71 7Q10 (CFS) 0.71 DESIGN FLOW (MGD) 0.115 DESIGN FLOW (MGD) 0.115 DESIGN FLOW (CFS) 0.17825 DESIGN FLOW (CFS) 0.17825 STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0 UPS BACKGROUND LEVEL (UG/L) 0 UPS BACKGROUND LEVEL (MG/L) 0.22 IWC (%) 20.07 IWC (%} 20.07 Allowable Conc. (ug/1) 84.71 Allowable Concentration (mg/1) 4.11 maximum=28 ug/I minimum = 2 Ammonia as NH3 (winter) 7Q10 (CFS) 1.12 Fecal Limit 200/100ml DESIGN FLOW (MGD) 0.115 Ratio of 4.0 :1 DESIGN FLOW (CFS) 0.17825 STREAM STD (MG/L) 1.8 UPS BACKGROUND LEVEL (MG/L) 0.22 IWC (%) 13.73 Allowable Concentration (mg/1) 11.73 minimum = 4 NCO087033 Facility: Harmony WWTP Discharge to: Dutchman Creek Stream class and index #: C Residual Chlorine Ammonia as NH3 (summer) 7Q10 (CFS) 0.71 7Q10 (CFS) 0.71 DESIGN FLOW (MGD) 0.25 DESIGN FLOW (MGD) 0.25 DESIGN FLOW (CFS) 0.3875 DESIGN FLOW (CFS) 0.3875 STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0 UPS BACKGROUND LEVEL (UG/L) 0 UPS BACKGROUND LEVEL (MG/L) 0.22 lWC (%) 35.31 IWC (%) 35.31 Allowable Conc. (ug/1) 48.15 Allowable Concentration (mg/1) 2.43 maximum=28 ug/I minimum = 2 Ammonia as NH3 (winter) 7Q10 (CFS) 1.12 Fecal Limit 200/100ml DESIGN FLOW (MGD) 0.25 Ratio of 1.81 DESIGN FLOW (CFS) 0.3875 STREAM STD (MG/L) 1.8 UPS BACKGROUND LEVEL (MG/L) 0.22 IWC (%) 25.70 Allowable Concentration (mg/1) 6.37 minimum = 4 SOC PRIORITY PROJECT: NO To: Permits and Engineering Unit Water Quality Section Attention: Jackie Nowell Date: August 29, 2008 NPDES STAFF REPORT AND RECOMMENDATIONS County: Iredell NPDES Permit No.: NC0087033 It I PART I - GENERAL INFORMATION 1. Facility and address: Town of Harmony Post Office Box 118 Harmony, N.C. 28634 2. Date of investigation: January 12, 2001 3. Report prepared by: Michael L. Parker, Environmental Engineer II SEP 5 4. Person contacted and telephone number: Mayor John Campbell, 704-546-2339; Benjie Thomas, West Consultants, 828-433-5661. 5. Directions to site: From the jct. of Hwy. 21 and Tomlin Rd. (SR 1843) in the Town of Harmony, travel west on Tomlin Rd. = 0.5 mile and turn left onto Hickory Grove Road (SR 1939). Travel = 1.0 mile and the entrance to the proposed W WTP site is at the end of this road. 6. Discharge point(s), list for all discharge points: Latitude: 350 12' 22" Longitude: 800 4740" Attach a USGS Map Extract and indicate treatment plant site and discharge point on map. USGS Quad No.: D 15 NE 7. Site size and expansion area are consistent with application: Yes. At least 68 acres are available for construction of the proposed W WT facility, however, only 25 acres will actually be needed for WWTP construction. 8. Topography (relationship to flood plain included): The proposed site has rolling topography (3-12% slopes). The lower portion of the site may be at or near flood plain elevation, however, it is anticipated that all proposed treatment units will be constructed above flood plain elevation. Page Two 9. Location of nearest dwelling: Approx. 1000 feet from the WWTP site. 10. Receiving stream or affected surface waters: Dutchman Creek a. Classification: C b. River Basin and Subbasin No.: Yadkin 03-07-06 C. Describe receiving stream features and pertinent downstream uses: The area is very rural in nature with agriculture being the primary use. The receiving stream is = 4-5 feet wide and 2-6 inches deep at the proposed point of discharge. There are no known downstream dischargers. PART II - DESCRIPTIO TREATMENT WORKS 1. a. Volume of wastewater: 0.080 MGD (Initial Design Capacity)* *Denotes new permitted flow requested in this renewal. b. aQ44- U-1S-and - . GD C. Actual treatment capacity of current facility (current design capacity): Neither the WWTP or the collection system has been built at the present time. d. Date(s) and construction activities allowed by previous ATCs issued in the previous two years: The Town has requested issuance of an ATC (currently in review by CG&L), however, the ATC cannot be issued at least until the draft permit for the NPDES permit has been issued. e. Description of existing or substantially constructed W WT facilities: There are no existing WWT facilities. The Town had originally proposed to construct a wetlands treatment system, however, cost estimates were higher than expected and the plan was abandoned. f. Description of proposed W WT facilities: The Town proposes to construct a conventional activated sludge W WT facility consisting of flow equalization, aeration (diffused), clarification, tertiary filters, ultraviolet disinfection, parshall flume with effluent flow measurement, cascade step aeration, and aerated sludge storage. g. Possible toxic impacts to surface waters: None expected with UV disinfection. h. Pretreatment Program (POTWs only): Not Needed at the present time. 2. Residual handling and utilization/disposal scheme: Residuals will be transported for disposal to the WSACC's Rocky River WWTP. 3. Treatment plant classification: Class II (based on proposed treatment units) 4. SIC Code(s): 4952 Wastewater Code(s): 01 MTU Code(s): 32510 Page Three PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved (municipals only)? Yes. Public monies will be used in the construction of this WWT facility. The Town has applied for and secured funding from a variety of sources. 2. Special monitoring or limitations (including toxicity) requests: None at this time. 3. Important SOC/JOC or Compliance Schedule dates: N/A 4. Alternative analysis evaluation a. Spray Irrigation: Estimates provided by the Town's engineer indicated that at least 90 acres of land would be necessary to accommodate the projected waste flow from the Town (this amount of land is currently unavailable). Although sufficient area necessary to land apply the projected waste flow could possibly be found within a reasonable distance of the Town, high land costs would most likely stall this project since funding is based primarily on grants. b. Connect to regional sewer system: The closest sewer collection system that would have sufficient capacity to handle the Town's projected flow would be the City of Statesville, and the nearest Statesville line is at least 12 miles from the Town. For this reason, this alternative was eliminated. C. Subsurface: There is insufficient area available to the Town to adequately assimilate the projected waste flow. Furthermore, septic tank failures are the primary reason behind the Town's efforts to construct a WWTP. PART IV - EVALUATION AND RECOMMENDATIONS The Town of Harmony has applied for reissuance of an NPDES permit to allow for a discharge of treated municipal wastewater into Dutchman Creek. Construction of the proposed WWTP is planned for late 2008/early 2009. The wastewater generated by the Town will be almost entirely domestic_. The Town has requested in this renewal that an additional flow limit be incorporated into the permit at renewal (see Part II, No. 1 a). This lower permitted flow will reflect the proposed hydraulic capacity of the WWTP that is being proposed by the Town. The Town would like, however, to retain the effluent flows of ).115 MGD and the ultimate design flow of 0.250 MGD in the current permit. Page Four Pending receipt and approval of the draft permit for this facility, it is recommended that an NPDES permit be reissued as requested. hAdsrNdsrO8Wamony.dm Signature of Report Preparer Water Quality Regional Supervisor Date JE nt IIi t� J ti, FSEP 5 2000 v;ar[R Guaun ('iG' cl1UP�' pn. orH I TOWN OF HARMONY FLOW SCHEMATIC Rm---q TOWN of HARMONY PO BOX 118 HARMONY, NC 28634 Phone: 704-546-2339 Fax: 704-546-5061 Email: harmonync@yadtel.net John Ray Campbell, Mayor Robin Dobson Town Clerk Aldermen: Patricia Clanton Joyce Rogers Ray Lewis Carolyn Moore August 4, 2008 Mrs. Jacquelyn Nowell NCDENR — Division of Water Quality NPDES 1617 Mail Service Center Raleigh, NC 27699-1617 RE: Town of Harmony WWTP NPDES Permit NC 0087033 Renewal/Modification Dear Mrs. Nowell: In accordance with the letter we received from Charles Weaver dated June 4, 2008, we are submitting with this letter the required application form. By this form, Harmony is requesting renewal of the NPDES permit but also a reduction in the initial flow limit from 0.115 MGD to 0.080 MGD. However, we request that the future, maximum flow limit remain at 0.250 MGD. Also, to clarify, the plan to use a constructed -wetland system has been abandoned. A conventional activated -sludge process will be used. As to the original 0.115 MGD flow limit, Harmony would like to retain this limit as an interim option should a small plant expansion become necessary in the future. However, it is more important to expe- dite the permit modification since it is an urgent matter that the project get started while the funds are available. So please omit the 0.115 MGD flow limit if it would delay permit issuance. Thank you very much for your assistance in this matter. Sincerely, W John Ray Campb ,Mayor FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Town of Harmony, NCO08733 Lower permit flow Yadkin 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. 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 Slates 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 1MGD, 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 wasteslream 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) NPDES FORM 2A Additional Information • • ••••�.. 11IMIwIG r►nN rCRml 1 NumCStK: PERMIT ACTION REQUESTED: RIVER BASIN: Town of Harmony, NCO08733 Lower permit flow Yadkin BASK A PPLICATION INFORMATION PAS T A. B;i A..7I._ L APP UCAC. N'SIC k�NFORMAT10' ,Ck FOR - All TSt .. treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet. A.1. Facility Information. Facility Name Town of Harmony Mailing Address PO Box 118 Harmony, NC 28634 Contact Person John Ray Campbell Title Mayor Telephone Number 704 546-2339 Facility Address (not P.O. Box) Harmony, NC 28634 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? ® 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 NCO08733 PSD UIC Other 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 Harmony 609 Separate Municipal Total population served 609 NPDES FORM 2A Additional Information I FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Town of Harmony, NCO08733 Lower permit flow Yadkin 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 121" month of "this year" occurring no more than three months prior to this application submittal. a. Design flow rate Plant not vet constructed. request reduction in current NPDES permit flow limit of 0115 mad to 0.080 mad MGD Two Years Ago Last Year This Year b. Annual average daily flow rate NIA C. Maximum daily flow rate NIA 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.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 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.? ❑ Yes If yes, provide the following for each surface impoundment: Location: Annual average daily volume discharge to surface impoundment(s) Is discharge ❑ continuous or ❑ intermittent? C. Does the treatment works land -apply treated wastewater? If yes, provide the following for each land application site: d Location: Number of acres: Annual average daily volume applied to site: Is land application ❑ continuous or ❑ intermittent? Does the treatment works discharge or transport treated or untreated wastewater to another treatment works? 1 0 NIA 0 ® No MGD ❑ Yes ® No MGD ❑ Yes ® No NPDES FORM 2A Additional Information FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Town of Harmony, NCO08733 Lower permit flow Yadkin 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 L ) For each treatment works that receives this discharge, provide the following: Name Mailing Address Contact Person Title Telephone Number L ) 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): Annual daily volume disposed by this method: Is disposal through this method ❑ continuous or ❑ intermittent? NPDES FORM 2A Additional Information I FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: I Town of Harmony, NCO08733 I Lower permit flow Yadkin 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 1 b. Location Harmony 28634 (City or town, if applicable) (Zip Code) Iredell NC (County) (State) 35.941 N 80.796W (Latitude) (Longitude) C. Distance from shore (if applicable) N/A ft. d. Depth below surface (if applicable) N/A ft. e. Average daily flow rate 0.080 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: Average duration of each discharge: Average flow per discharge: MGD Months in which discharge occurs: g. Is outfall equipped with a diffuser? ❑ Yes ® No A.10. Description of Receiving Waters a. Name of receiving water Dutchman Creek, NC Stream Index #12-108-12 b. Name of watershed (if known) Yadkin 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 cis chronic e. Total hardness of receiving stream at critical low flow (if applicable): cfs mg/l of CaCO3 NPDES FORM 2A Additional Information FACILITY NAME AND PERMIT NUMBER: REQUESTED: RIVER BASIN: :[pPE!RMLOWACTION Town of Harmony, NCO08733 er permit flow Yadkin A.11. Description of Treatment a. What level of treatment are provided? Check all that apply. N Primary N Secondary ❑ Advanced ❑ Other. Describe: b. Indicate the following removal rates (as applicable): Design BOD5 removal or Design CBOD5 removal 85 Design SS removal 85 h Design P removal NIA Design N removal NIA Other b C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe: UV SYSTEM If disinfection is by chlorination is dechlorination used for this outfall? ❑ Yes N No Does the treatment plant have post aeration? N 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 GA/QC requirements of 40 CFR Part 136 and other appropriate QAIQC 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: NIA— New Facility PARAMETER MAXIMUM DAILY VALUE AVERAGE DAILY VALUE Value Units Value Units Number of Samples pH (Minimum) S.U. pH (Maximum) SM. Flow Rate Temperature (winter) Temperature (Summer) ' For pH please report a minimum and a maximum daily value MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE - POLLUTANT ANALYTICAL MLIMDL Conc. Units Conc. Units Number of METHOD Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS BIOCHEMICAL OXYGEN BOD5 DEMAND (Report one) CBOD5 FECAL COLIFORM TOTAL SUSPENDED SOLIDS (TSS) END OF PART A. REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE NPDES FORM 2A Additional Information FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Town of Harmony, NCO08733 Lower permit flow Yadkin `BASK APPLICATION -INFORMATION RT PA C CERTi,FICATION 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) ❑ 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 JobR44&v Cam b a or Signature, Telephone number (704 546-2339 " , S�- 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 NPDES FORM 2A Additional Information TOWN OF HARMONY TOWN -WIDE SANITARY SEWER PROJECT RESIDUALS MANAGEMENT PLAN Residual Stabilization Storage Requirement Letter of Acceptance August 5, 2008 1'y',«, R. sty.. Ot WEST CONSULTANTS I'll. RESIDUAL STABILIZATION THE RESIDUALS WILL HAVE 30 DAYS OF HOLDING AND WILL BE HAULED TO AND DISPOSED OF AT THE ROCKY RIVER WW I P IN CONCORD, NC. FOLLOWING IS A LETTER OF ACCEPTANCE FROM THE ROCKY RIVER WWTP. ALSO INCLUDED IS A LETTER FROM LEN Z SEPTIC TANKS, INC. STATING THE COMPANY CAN PROVIDE MONTHLY HAULING SERVICES. RESIDUAL STORAGE REQUIREMENT SLUDGE HOLDING TANK TYPICAL WASTE SLUDGE REMOVED FOR EXTENDED AERATION (24 HOURS): 0.15-0. )0 LB/LB BOD5. USE 0.225 QI = INFLUENT FLOW QE = EFFLUENT FLOW Q1 = QE = DESIGN FLOW QW = WASTED SLUDGE FIAW RATE BOD5 To BE REMOVED: = (RAW BOD5 - PERMIT LIMIT) * DESIGN FLOW = (300-30) mg/L * 0.080 MGD * 8.34 = 180.14 LB BOD5/DAY REMOVED WASTED SLUDGE To Be REMOVED (LB/D Y). USING 0.225 LB/LB BOD5: = 180.14 LB BOD5/DAY REMOVED * 0.225 LB/LB BOD5 = 40.53 LB/DAY WA.S TED SL UDGE FLo w RA T E (Q LI ). ASSUME 0.75% SLUDGE CONCENTRATION (7,500 mg/L) = WASTED SLUDGE TO BE REMOVED/CONCENTRATION OF SLUDGE =40.53 LB/DAY/(7,500 mg/L * 8.34) =648 GPD SLUDGE TANK DESIGN (GALLON.5): VOLUME NEEDED IF SIZING BASED ON 30 DAYS OF STORAGE WASTED SLUDGE FLOW RATE * 30 DAYS �- 648 GPD * 30 DAYS _= 19.440 GALLONS VOLUME NEEDED IF SIZING BASED ON 3.5 CF/CAPITA AND HARMONY POPULATION OF 690 18,064 GALLONS B.,\SE SLUDGE STORAGE SIZE ON 30 DAYS OF STORAGE: = 19.440 GALLONS WSACC WATER & SEWER AUTHORITY OF CABARRUS COUNTY My. Ron Lyrai West Consultants, PLLC 405 S. Sterling Street Morganton, NC 6865.5 August 6, 2008 SUBRCT: S011 DS HANDLING - TOWN OF RLA.RMONV WASTEWATER TREATMENT PLANT Dear Mr. Lynn: I t1 ka- 232 Davlduin Hwy. ma-1 to; ;so• Be% Yea CQauxd. INC 2302VA26 PACna.: 04.186.1783 fim ?04.7 95.156a This letter is in response to your request for the Water and Sewer Authority of Cabarrus County (WSACC) to wept up to 20,000 gallons per month of sludge decanted to 2% SOWS at its Rocky River Regional Wastewater Treatment Plant (RRRWWTP). It is WSACC's undershwding that this sludge will be pmly domestic and will be pumped from the Town of Harmony Wastewater Treatment Pi4nt, which is in the first stage of the constrwion process. WSACC agrees to accept these solids based on the following cortingenc:ies: 1) An acceptable contract must be signed by both parties before .hauling begins. 2) Metal analysis must be completed anm all9 and within RRRWWTP guidelines for offsite solids, as required by RRRV*7P's Division of Air Quality P�,,n it..'amples are to be delivered to RR.R'`rV'N'iTP s otrsite la.b fbr analysis. 3*1 WSACC reserves the right to deny hauling of solids if the RRRNVWTP incinerator's operational parameters are exuded. 4) A site visit to RRR` VNVTP by the proposed hauler to discuss facility's unloading requirements. The current cost for offshe sludge is S.03/galbn Iffir sludge with a solids content oaf' 0- 2.9% and $238.00/dry ton for solids content of 3% and higher. Please be aware that WSACC is curfamiy doing a cost analysis for sludge incineration and these prices may increase before the construction at Town of Harmony WV#7P is completed and ready to begin hauling. If you have any questions or concerns, please feel free to contact nr, at 7 04-7884164, ext. ) 4 or via a -mall at trrauldjn wsacc. ora. 'iffMbll cc: T, Lynn Bishop. WSACC; Sincerely, Timothy H. Mauldin Wastewater Operations der I_ EN'17 SI.TTIC 1'ANK SERVICE, INC. August 1, 2008 Mayor John Ray Campbell "Town of Harmony PO Box 118 Harmony, NC 28634 RE: Town of Harmony Wastewater Treatment Plant Residuals Dear Mayor Campbell: Lentz Septic Tank Service will provide monthly hauling service of the waste sludge produced from the proposed Town of Harmony wastewater plant. If you have further questions or concerns, feel free to contact us. Sincerely, Keith Lentz, Owner TOWN OF HARMONY PO BOX 118 HARMONY, NC 28634 Phone:704-546-2339 Fax:704-546-5061 Email: harmonync@yadtel.net John Ray Campbell, Mayor Robin Dobson Town Clerk Aldermen: Patricia Clanton Joyce Rogers Ray Lewis Carolyn Moore April 18, 2008 Mr. Charles Weaver Division of Water Quality NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Re: Modification Request NPDES Permit NC 0087033 Town of Harmony Sanitary Sewer System Dear Mr. Weaver: This letter is to request a modification to the existing Town of Harmony's NPDES permit (copy enclosed). The discharge limit is set as 0.115 mil- lion gallons per day (mgd), however, the design flow for which the cur- rent wastewater treatment plant is being designed is 0.080 mgd. This is due to a re-evaluation of the expected average daily flow. Therefore, the Town of Harmony requests a modification of the NPDES permit to a lower permit flow of 0.080 mgd along with any associated limits and monitoring changes. If you need more information, please let me know. Sincerely, TOWN OF HARMONY oMayor a /i vohn Ray Camp -bell, Enclosure I RECEIVED I,Fff 1 2 2008 DENR - WATER QUALITY POINT SOURCE BRANCH FACT SHEET FOR EXPEDITED PERMIT RENEWALS Basic Information to determine potential for expedited permit renewal Reviewer/Date Permit Number V L p Facility Name 1^- Basin Name/Sub-basin number t � t1v 4—U Receiving Stream c k ,-a,A. C-Ya.t'-c-. Stream Classification in Permit C . Does permit need NH3 limits? A4> Does permit need TRC limits? /(/U Does permit have toxicity testing? Does permit have Special Conditions?� Does permit have instream monitoring? /11� Is the stream impaired (on 303(d) list)? N� Any obvious compliance concerns? Any permit mods since lastpermit? Existing expiration date 0 v New expiration date 0 New permit effective date Miscellaneous Comments YES_ This is a SIMPLE EXPEDITED permit renewal (administrative renewal with no changes, or only minor changes such as TRC, NH3, name/ownership changes). Include conventional WTPs in this group. YES This is a MORE COMPLEX EXPEDITED permit renewal (includes Special Conditions (such as EAA, Wastewater Management Plan), 303(d) listed, toxicity testing, instream monitoring, compliance concerns, phased limits). Basin Coordinator to make case -by -case decision. YES_ This permit CANNOT BE EXPEDITED for one of the following reasons: • Major Facility (municipal/industrial) • Minor Municipals with pretreatment program • Minor Industrials subject to Fed Effluent Guidelines (lb/day limits for BOD, TS S, etc) • Limits based on reasonable potential analysis (metals, GW remediation organics) • Permitted flow > 0.5 MGD (requires full Fact Sheet) • Permits determined by Basin Coordinator to be outside expedited process TB Version 8/18/2006 (NPDES Server/Current Versions/Expedited Fact Sheet) P