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HomeMy WebLinkAboutNC0086070_Permit Issuance_20160801�i Water Resources ENVIRONMENTAL QUALITY August 1, 2016 Mr. Mark Jones Jones Environmental 45 Pleasant Court Flat Rock, NC 28731 PAT MCCRORY Gomm. DONALD R. VAN DER VAART Se. em ) S. JAY ZIMMERMAN Director Subject: Issuance of NPDES Permit NCO086070 Western Justice Academy WWTP Class WW-2 Henderson County Dear Mr. Jones: The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject facility. 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. We have made the following updates to your previous permit: ➢ Section A. (3) has been added to require electronic submission of effluent data. Federal regulations require electronic submittal of all discharge monitoring reports (DMRs), effective December 21, 2016. ➢ Permit Reporting Condition for USGS stream flow data (7Q108 (cfs), 7Q10w (cfs), 30Q2 (cfs), and average stream flows (cfs)) for Lewis Creek removed due to completion. ➢ Regulatory citations have been added to the permit. ➢ Parameter codes have been included. ➢ An updated outfall map has been included We have made the following updates since the draft permit ➢ On the supplement to permit cover sheet, existing wastewater treatment design capacity has changed to 0.03 MGD to correct an error. Please note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility, then mitigative measures may be required No later than December 21, 2016, federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such submittals, then permittees must submit DMRs electronically to the Environmental Protection Agency (EPA). The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015. The requirement to begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to your final NPDES permit. [See A. (3)] For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit the following web page: Stale of North Carolina I Envimnmental Quality J Water Resources 1617 Mail service Center I Raleigh, North Carolina 27699-1617 919 807 6300 htti)://deg.ne.gov/about/divisions/water-resources/edm . For more information on EPA's final NPDES Electronic Reporting Rule, please visit the following web site: http•//www2 epa gov/compliance/final-national-pollutant-discharge-elimination-system-npdes- electronic-reporting-rule. If any parts, measurement frequencies, or sampling requirements contained in this permit are unacceptable, you have the right to an adjudicatory hearing, upon written request submitted within thirty (30) days after receiving this letter. Your request must take the form of a written petition conforming to Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall remain final and binding. Please note that this permit is not transferable except after notice to the Division. 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 Resources or any other Federal, State, or Local governmental permits that may be required. If you have questions, or if we can be of further service, please contact Jennifer Busam at [jennifer.busam@ncdenr.gov] or call (919) 807-6393. ;Jay Zimmerman, P.G., Director Division of Water Resources, NCDEQ Enclosure: NPDES Permit NCO086070 (Issuance Final) hc: Central Files NPDES Program Files ARO Files ec: Mr. Marcus A. Jones [majones@hendersoncountync.org] Mr. Greg Wiggins[gwiggins@hendersoncountync.org] Permit NCO086070 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision 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, Henderson County Utilities is hereby authorized to discharge wastewater from a facility located at the Western Justice Academy WWTP 3973 Chimney Rock Road Edneyville Henderson County to receiving waters designated as the Lewis Creek in subbasin 04-03-02 of the French Broad 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 September 1, 2016. This permit and authorization to discharge shall expire at midnight on November 30, 2020. Signed this day August 1, 2016. S 6merman, P.G., Director 'vision of Water Resources By Authority of the Environmental Management Commission Page 1 of 7 Permit NCO086070 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this 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. Henderson County Utilities is hereby authorized to: 1. Operate an existing 0.03 MGD wastewater treatment facility with the following components: • Bar screen and pumps • Inlet flow control splitter box • Flow equalization basin (7,300 gallon) • Dual aeration basins (53,000 gallons total) designed to operate in series or parallel with dual (250 scfm) blowers • Dual clarifiers (2,430 gallons each) with return sludge • Pre -filter tablet chlorinator • Dual multi -media (sand & anthracite) tertiary filters (with a minimum of 10 sq ft each) • Clearwell (3,124 gallon) • Post aeration with audible and visual alarms • Continuous recording flow meter • Tablet chlorinator • Chlorine contact chamber (625 gallon) • Tablet dechlorinator • Composite sampler - • Aerobic digester (5,000 gallon) • Effluent pump station. This facility is located at the Western Justice WWTP (3973 Chimney Rock Road, Edneyville) in Henderson County. 2. Discharge from said treatment works via Outfall 001, at the location specified on the attached map into Lewis Creek [6-55-11-6] currently classified C-Trout waters in subbasin 04-03-02 [HUC: 0601010503] of the French Broad River Basin. Page 2 of 7 Permit NCO086070 Part I A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.010) [15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.] Beginning with the effective date of this permit and lasting until flow exceeds 0.010 MGD (monthly average) or expiration, whichever is sooner, the Permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Weekly Daily Measurement Sample Sample Parameter Code Average Average Maximum Frequency Type Location Flow 50050 0.010 MGD Continuous Recording Influent or Effluent BOD, 5-day, (20°C) E C0310 30.0 mg/L 45.0 mg/L Weekly Composite Influent and Effluent Total Suspended Solids 3 C0530 30.0 mg/L 45.0 mg/L Weekly Composite Influent and Effluent NH3 as N - Summer" C0610 7.0 mg/L 18.0 mg/L Weekly Composite Effluent NH3 as N - Winter' C0610 20.0 mg/L 35.0 mg/L Weekly Composite Effluent Fecal Coliform Effluent, (geometric mean) 31616 200/100 ml 400/100 ml Weekly Grab Upstream & Downstream 4 Total Residual Chlorine 3 50060 28 pg/L 2/Week Grab Effluent Dissolved Oxygen 00300 Weekly Grab Effluent Dissolved Oxygen 00300 Weekly Grab Upstream & Downstream 4 Temperature (°C) 00010 Daily Grab Effluent Temperature (°C) 00010 Weekly Grab Upstream & Downstream 4 pH 00400 > 6.0 and < 9.0 standard units Weekly Grab Effluent Total Nitrogen C0600 (NO2+NO3+TKN) Semi -Annually Composite Effluent Total Phosphorus C0655 Semi -Annually Composite Effluent -summer. apm t - vctober 3t 'Winter November 1- March 31 Footnotes.• 1. No later than December 21, 2016, the permittee shall begin submitting discharge monitoring reports electronically using the NC DWR's eDMR application system [see A. (3)]. 2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal) 3. The Division shall consider all effluent TRC 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 ug/L. 4. Upstream= 50 feet above the discharge point. Downstream= 0.5 miles downstream of discharge point. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 3 of 7 PermitNCO086070 A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.030) [15A NCAC 0213.0400 et seq., 15A NCAC 02B.0500 et seq.] During the period beginning when the monthly average flow exceeds 0.010 MGD and lasting until expiration, the Permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below: EFFLUENT CHARACTERISTICS Parameter Code EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow 50050 0.030 MGD Continuous Recording Influent or Effluent BOD, 5-day, (20°C) 2- Summer" C0310 5.0 mg1L 7.5 mglL Weekly Composite Influent and Effluent BOD, 5-day, (20°C) 2- Winter* C0310 10.0 mglL 15.0 mg1L Weekly Composite Influent and Effluent Total Suspended Solids 2 C0530 30.0 mglL 45.0 mglL Weekly Composite Influent and Effluent NH3 as N - Summer* C0610 2.0 mglL 6.0 mg1L Weekly Composite Effluent NH3 as N - Winter* C0610 4.0 mglL 12.0 mglL Weekly Composite Effluent Fecal Coliform (geometric mean) 31616 200/100 ml 400/100 ml Weekly Grab Effluent, Upstream & Downstream 4 Total Residual Chlorine 3 50060 28 NgIL 2/Week Grab Effluent Dissolved Oxygen 00300 Weekly Grab Effluent Dissolved Oxygen 00300 Weekly Grab Upstream & Downstream 4 Temperature (°C) 00010 Daily Grab Effluent Temperature (°C) 00010 Weekly Grab Upstream & Downstream pH 00400 > 6.0 and < 9.0 standard units Weekly Grab Effluent Total Nitrogen (NO2+NO3+TKN) C0600 Semi -Annually Composite Effluent Total Phosphorus C0655 Semi -Annually Composite Effluent JYIIIIIICI. Rrl111 /-Wfoi&r J I Winter. November 1- March 31 Footnotes.• 1. No later than December 21, 2016, the permittee shall begin submitting discharge monitoring reports electronically using the NC DWR's eDMR application system [see A. (3)). 2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal) 3. The Division shall consider all effluent TRC 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 fig/L. 4. Upstream= 50 feet above the discharge point. Downstream-- 0.5 miles downstream of discharge point. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 4 of 7 Permit NCO086070 A. (3) ELECTRONIC REPORTING OF MONITORING REPORTS [NCGS 143-215.1 (b)] Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports and specify that, if a state does not establish a system to receive such submittals, then permittees must submit monitoring data and reports electronically to the Environmental Protection Agency (EPA). The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits): • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E. (5.) Monitoring Reports 1. Reporting Requirements (Supersedes Section D. 12.1 and Section E. 15.1 (alb Effective December 21, 2016, the permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DEQ / Division of Water Resources / Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. See "How to Request a Waiver from Electronic Reporting" section below. Page 5 of 7 Permit NCO086070 Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data and reports, when applicable: • Sewer Overflow/ Bypass Event Reports; • Pretreatment Program Annual Reports; and • Clean Water Act (CWA) Section 316(b) Annual Reports. The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from Electronic Reporting" section below). 2. Electronic Submissions In accordance with 40 CFR 122.41(1) (9), the permittee must identify the initial recipient at the time of each electronic submission. The permittee should use the EPA's website resources to identify the initial recipient for the electronic submission. Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic NPDES data [see 40 CFR 127.2(b)]. EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at: http:L/v.iww2.eva.gov/compliance / final-national-pollutant-discharge-ehmination- system-npdes-electronic-reporting-rule. Electronic submissions must start by the dates listed in the "Reporting Requirements" section above. 3. How to Request a Waiver from Electronic Reporting The permittee may seek a temporary electronic reporting waiver from the Division. Tc obtain an electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written approval at least sixty (60) days prior to the date the facility would be required under this permit to begin submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and reports shall be submitted electronically to the Division unless the permittee re- applies for and is granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not transferrable. Only permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the Division for the period that the approved reporting waiver request is effective. Page 6 of 7 Permit NC0086070 Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web page: http: / /deq.nc.gov/about/divisions/water-resources/edmr 4. Signatory Requirements (Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d11 All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.) (a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http: / / deg.nc.gov/ about f divisions / water -resource s / edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: 7 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 submitted 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 fines and imprisonment for knowing violations. " 5. Records Retention [Supplements Section D. (6.11 The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.411. Page 7 of 7 O n T t - {%p.r -- _— � - ` C we i _ a G • r < � � � 3 � _ � .�' Y r A i w �•A ��� ,t -. a A x. r. S B - . ') 1 <. �. A/��. C- 1 - i r � •i J1. J J ♦ R +• r • > - a, � �-� 1 t� � r •• ♦ r r• �^ L •• _-. -' 1 c .. :• c. .• � t 4> i=.Sa I f: c z k r Y C - 3 7/ .� t t. V •.. t, t �. . M C ` ! Y0. r � SI F..•i • �Y h 4ia � , �,..�. _ J t w 4 < 1 w :; n > i � l 3 - �g r - C •`9 • < • - � a .. ... 4 A f '. w I : + <<• �. "• •» a � V /��'� � j • ; r • e k • . t, o � r a < 4 ✓ 7 +, .. •. 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Outfa l l 001 �-- f O,... e . / 1724 �,Ll 1722 or 17 a i. . f f Henderson County Utilities Western Justice Academy WWTP NPDES Permit NCO086070 Stream Segment: 6-55-11-6 Stream Class: C- Trout River Basin: French Broad Sub -Basin M 04-03-02 County: Henderson HUC: 0601010503 Receiving Stream: Lewis Creek N SCALE 1:20,000 Facility Location—' scale not shown 35.3838890 ,-82.3569440 SGS Quad: Bat Cave Public Notice North Carolina Environmental Management CommisS V NPDES Unit 1617 Mail Service Center Rallc,'Mn 77698u1617 Notice of lntentto Issue a NPDES Wastewater Permit ment ew:s Creek/Frencn 'voad River Basin. Four parameters are water ,wality limited. Pilot Travel Centers,. Ina requested to renew. NPDES permit' NC008'53 for PTC' #393, Haywood County discharging to ,Uh., Branch, French Broad River Basin. June 16, 2016 3878) ASBEVIT J E CITIZEN T MES VOICE OF THE MOUNTAINS • CMZENTl111FS.com AFFIDAVIT OF PUBLICATION BUNCOMBE COUNTY SS. NORTH CAROLINA Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to administer oaths, personally appeared Kelly Loveland, who, being first duly sworn, deposes and says: that she is the Staff Accountant of The Asheville Citizen -Times, engaged in publication of a newspaper known as The Asheville Citizen -Times, published, issued, and entered as first class mail in the City of Asheville, in said County and State; that she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a true copy of which is attached hereto, was published in The Asheville Citizen -Times on the following date: June 16th 2016. And that the said newspaper in which said notice, paper, document or legal advertisement was published was, at the time of each and every publication, a newspaper meeting all of the requirements and qualifications of Section 1-597 of the General Statues of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statutes of North Carolina. Signed this 16"' day of June, 2016 Sworn to and subscribed before me the 161h day of June, 2016. expires the 5th day of October, 2018. NOTARY `<? (828) 232-5830 1 (828) 253-5092 FAX 14 O. HENRY AVE. I P.O. BOX 2090 1 ASHEVILLE, NC 28802 1 (800) 800-4204 C)�a�Ir PUBi IC �V �0' .: FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Jennifer D. Busam — 5/23/2016 Permit Number NCO086070 Facility Name Western Justice Academy WWTP Basin Name/Sub-basin number French Broad/ Receiving Stream Lewis Creek Stream Classification in Permit C- Trout Stream Index: 6-55-11-6 Does permit need Daily Max NH3 limits? No — already resent Does permit need TRC limits/language? No — already resent Does permit have toxicity testing? No Does permit have Special Conditions? Yes, 2011 USGS data request (complete, 6/6/2016 Does permit have instream monitoring? Yes, DO, fecal coliform, temperature Is the stream impaired on 303(d) list)? Yes, Benthos Fair Any obvious compliance concerns? No. Two enforcements during the current permit cycle. NOVs for Fecal Coliform exceedance in 2012, and a BOD exceedance in 2011. Any permit mods since lastpermit? No New expiration date 11/30/2020 Changes to 2011 Permit? Added eDMR requirements Added regulatory citations Created a new outfall map with updated outfall coordinates Parameter codes have been updated Changes to Draft Permit? A n CkWigVm6t 'dupcu,Ctil Most Commonly Used Expedited Language: N (i T 303(d) lanauaae for Draft/Final Cover Letter . `PIS" ease note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility, then mitigative measures may be required". TRC lanauaae for Compliance Level for Cover Letters/Effluent Sheet Footnote: "The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 µg/L will be treated as zero for compliance purposes." i:s C,C3MGD Busam, Jennifer d From: Weaver, John <jcweaver@usgs.gov> Sent: Friday, June 03, 2016 11:48 AM To: Greg Wiggins Cc: Marcus Jones; John Weaver Subject: Response from USGS concerning... Re: Location of discharge Mr. Wiggins, In response to your inquiry about the low -flow characteristics for Lewis Creek at U.S. Highway 64 near Edneyville in northeast Henderson County, the following information is provided: As identified by your email dated May 26, 2016, this site was the same point of interest for a 7Q10 discharge low -flow request in June 2011. The 7Q10 discharge was estimated to be in the range of 1.4 to 3.2 cfs (average about 2.1 cfs), based on transfer of low -flow characteristics from selected nearby sites published in Giese and Mason (1993). Prior to 2011, a check of the low -flow files here at the USGS South Atlantic Water Science Center (Raleigh office) did not indicate a previous low -flow determination for the point of interest. No USGS discharge records are likewise known to exist for the point of interest. In the absence of site -specific discharge records sufficient for a low -flow analysis, estimates of low -flow characteristics at ungaged locations are determined by assessing a range in the low -flow yields (expressed as flow per square mile drainage area, or cfsm) at nearby sites where estimates have been determined. A basin delineation completed for the point of interest using the USGS StreamStats application for North Carolina ( Alp://water.usgs.gov/osw/streamstats/north carolina.html) resulted in a drainage area at about 5.0 sqmi. For streams in Henderson County, low -flow characteristics published by the USGS are provided in the following reports: (1) The first is a statewide report completed in the early 1990's. It is USGS Water -Supply Paper 2403, "Low - flow characteristics of streams in North Carolina" (Giese and Mason, 1993). An online version of the report is available at http://pubs.usgs.gov/wsn/2403/rer)ort.pdf. The report provides the low -flow characteristics (based on data through 1988) via regional relations and at -site values for sites with drainage basins between 1 and 400 sgmi and not considered or known to be affected by regulation and/or diversions. (2) The second is a statewide report recently published in March 2015. It is USGS Scientific Investigations Report 2015-5001, "Low -flow characteristics and flow -duration statistics for selectedUSGS continuous -record streamgaging stations in North Carolina through 2012" (Weaver, 2015). The report is available online at htti):HT)ubs.usgs.gov/sir/2015/5001/. The report provides updated low -flow characteristics and flow -duration statistics for 266 active (as of 2012 water year) and discontinued streamgages across the state where a minimum of 10 climatic years discharge records were available for flow analyses. Inspection of the two reports indicates the presence of I I nearby selected USGS partial -record sites (7) and continuous -record streamgages (4) in general vicinity of the point of interest where low -flow characteristics have previously been published. Among these 11 sites, the low -flow yields range as follows: Annual 7Q10 low -flow yield from 0.17 to 0.70 cfsm (average approximately 0.40 cfsm) Annual 30Q2 low -flow yield from 0.39 to 1.26 cfsm (average approximately 0.75 cfsm) Winter 7Q10 low -flow yield from 0.25 to 1.28 cfsm (average approximately 0.57 cfsm) Annual AvgQ yield from about 1.2 to 2.2 cfsm (average approximately 1.6 cfsm) Applying the above annual yield ranges to the drainage area for the point of interest (5.0 sgmi) results in following estimated discharges: Annual 7Q10 low -flow yield from 0.85 to 3.5 cfs (average approximately 2.0 cfs) Annual 30Q2 low -flow yield from about 2.0 to 6.3 cfs (average approximately 3.8 cfs) Winter 7Q10 low -flow yield from about 1.3 to 6.4 cfs (average approximately 2.9 cfs) Annual AvgQ yield from about 6.0 to 11 cfs (average approximately 8 cfs) Please understand the information provided in this message is based on a preliminary assessment and considered provisional, subject to revision pending further analyses. Hope this information is helpful. Thank you. Curtis Weaver J. Curtis Weaver, Hydrologist, PE Email: icweaver0usas.gov USGS South Atlantic Water Science Center Online: httD;11nc.water.usos.00v1 North Carolina - South Carolina - Georgia 3916 Sunset Ridge Read Raleigh, NC 27607 Phone: (919) 571-4043 // Fax: (919) 571-4041 On Thu, May 26, 2016 at 4:16 PM, Greg Wiggins <gwig ins(a�hendersoncountync.org> wrote: Mr. Weaver, Please see the attached picture of the discharge site with my curser on the approximate location. As you can see it is right beside US 64 in Edneyville N.C. Thanks,