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Home My WebLink AboutNC0088366_NPDES Permit Mod_20150501Fff0 NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor May 1, 2015 Mr. Kenneth Fail, Wastewater Manger Harnett County Public Utilities P. O. Box 1119 Lillington, NC 27546 Subject: NPDES Permit Modification Permit Number NC0088366 South Harnett Regional WWTP Harnett County Donald R. van der Vaart Secretary RECEEVED/DENPJDWR Water Quality Regional MAY 2 2 2015 Fayetteville Operations Section ce Dear Mr. Fail: Division personnel have reviewed and approved your application for minor modification of the subject permit. Accordingly we are forwarding the attached modified permit page. Please remove the existing "Effluent Limitations and Monitoring Requirements" page and replace it with the one attached to this letter. This modification reduces the effluent monitoring frequencies for Biochemical Oxygen Demand (BOD5), Total Suspended Solids (TSS), Fecal Coliform and Ammonia Nitrogen (NH3-N) from daily (5/week) to 2/week monitoring. The modification was based upon an evaluation of three years of facility effluent monitoring data. The facility's performance satisfies the criteria established in the "DWQ Guidance Regarding the Reduction of Monitoring Frequencies in NPDES Permits for Exceptionally Performing Facilities" as approved by the Director of the Division of Water Resources on October 22, 2012, and justifies reduced monitoring for these parameters. The modified monitoring frequencies will become effective as of the date of this letter. This modification 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). 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 permits required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be required. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Phone: 919-807-6300 \lntemet: www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer— Made in part by recycled paper Mr. Kenneth Fail NC0088336 Monitoring Frequency Reduction p. 2 If you have any questions concerning this permit, please contact Bob Sledge at telephone number (919) 807-6398 or via e-mail at bob.sledge@ncdenr.gov. S. Jay Zimmerman, Direc ',- Division of Water Resources attachment cc: Central Files f ayetteville RegionaYOffice - D�VR W ter uality NPDES erms File ec: EPA Region 4 a Permit NC0088366 A. (1) ENLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning May 1, 2015 and lasting until expiration, the Permittee is authorized to discharge treated 100% domestic wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: :.Effluent; - Characteristics: ,'', Discharge Limitations. •Monitoring.kR'equirements ' Monthly Average Weekly . „_Average: -Daily`; -• Maximum: 1.-Measurement „ ;Fregpency; . • Sample . . Type'.., ;. SalmpleLocation 1'' _ _ _ Flow 15.0 MGD Continuous Recording Influent or Effluent BOD, 5-day, 20°C 2 (April 1— October 31) 5.0 mg/L 7.5 mg/L . 2/Week ' Composite Influent and Effluent BOD, 5-day, 20°C (November 1— March 31)2 10.0 mg/L 15.0 mg/L 2/Week Composite Influent and Effluent Total Suspended Solids 2 30.0 mg/L' 45.0 mg/L - 2/Week Composite Influent and Effluent NH3asN (April 1— October 31) 1.0 mg/L 3.0 mg/L .. 2/Week .• Composite Effluent NH3 as N (November 1— March 31) 2.0 mg/L 6.0 mg/L 2/Week Composite - Effluent Dissolved Oxygen 3 Daily Grab Effluent Fecal Coliform (geometric mean) 200/100m1 400/100m1 ' 2/Week Grab Effluent Temperature . • Daily Grab Effluent pH 4 Daily Grab Effluent Total Phosphorus mg/ L Monthly Composite Effluent Total Phosphorus 5 Seasonal Mass load of 53,543 lb October Calculated Effluent TKN Monthly Composite Effluent NO2 + NO3 Monthly Composite Effluent Total Nitrogen mg/ L Monthly Calculated Effluent Total Nitrogen 5' 6 Seasonal Mass load of 160,6281b April October Calculated Effluent Chronic Toxicity 7 Quarterly Composite Effluent Temperature s See Footnote 1 Grab Upstream & Downstream Dissolved Oxygen 8 See F 1 mote Grab Upstream & Downstream Effluent Pollutant Scan 9 Footnote 9 Footnote 9 Effluent NOTES: See next page Facility Name NPDES Permit, Receiving Stream 303(d) listed? Data Period of Review Reviewed by Date BOD5 Permit Limits: Data Review Summary Monitoring Frequency Reduction Evaluation Sou.+1 Oaf 1 \J 7P Ueoo V33.6b Ii 17,Q .c Yes/ No / ao/a 061-5V Summer Monthly Avg. mg/L Weekly Avg. 77 $' mg/L 3 Year Average < 2• a� mg/L (target = # Daily Values > / 3 mg/L 0 Meets the review guidance standards for this parameter? ref TSS Permit Limits: All Months Monthly Avg. Weekly Avg. 3a mg/L mg/L 3 Year Average 2 mg/L (target = / Y ) # Daily Values > 60 mg/L 0 Meets the review guidance standards for this parameter? y s NI13-N Permit Limits: Summer Monthly Avg. Weekly Avg. / mg/L 3 mg/L 3 Year Average < /• 1 mg/L # Daily Values > 3 mg/L 20 Meets the review guidance standards for this parameter?. Fecal Coliform/Enterococci Permit Limits: All Months Monthly Avg. Weekly Avg. •tad/100m1 116d/100m1 3 Year Geometric Mean < /1 (target = /o 0 ) Meets the review guidance standards for this parameter? # Daily Values > boa Attach Violation and Enforcement Reports 4,4 yt ee. S (target = 7 S ) Y�s Basin: Gat !'ea' Winter Monthly Avg. Weekly Avg. /Q mg/L /5 mg/L Winter Monthly Avg. 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