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Home My WebLink AboutNC0023299_Permit modification_20071206ATA NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor William G. Ross, Jr., Secretary Coleen H. Sullins, Director December 6, 2007 Mr. Jeff House Affordable Residential Communities 5810 Beagle Run Drive Raleigh, NC 27616 Subject: Modification of NPDES Permit NC0023299 Woodlake WWTP Guilford County Dear Mr. House: Division staff in the NC DENR Winston-Salem Regional Office have requested a minor modification to the subject permit. Due to safety and accessibility concerns, the existing downstream sampling location should be abandoned for one closer to the outfall. This permit modification changes the minimum downstream sampling distance in section -A. 1. of the permit. No other changes to the permit have been made. Please find enclosed the revised effluent page, which should be inserted into your permit. The old page may then be discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency. If any parts, measurement frequencies or sampling requirements contained in this permit modification 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 a written petition conforming to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. If you have any questions concerning this permit modification, please contact Charles Weaver of the NPDES Unit at (919) 733-5083, extension 511. Sincerely, a4 cc: Central Files Winston-Salem Regional Office / Corey Basinger NPDES Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 512 N. Salisbury St., Raleigh, North Carolina 27604 Phone: 919-733-5083 / FAX 919-733-0719 / www.ncwaterquality.org An Equal Opportunity/Affirmative Action Employer-50% Recycled/10% Post Consumer Paper NorthCarolina Natura/4f Permit NC0023299 A. (1.) EFFLUENT LIMITS AND MONITORING REQUIREMENTS During the period beginning on December 6, 2007, and lasting until September 30, 2011, the permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be limited and monitored by the permittee as specified below: PARAMETER Parameter Description - PCS Code EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Daily Maximum Unit of Measure Measurement Frequency Sample Type Sample Location1 Flow, in conduit or thru treatment plant - 50050 0.07 MGD Continuous Recorder Influent or Effluent BOD, 5-Day (20 Deg. C) - 00310 - Summer 5.0 7.5 mg/L Weekly Composite Effluent BOD, 5-Day (20 Deg. C) - 00310 - Winter 10.0 15.0 mg/L Weekly Composite Effluent Total Suspended Solids- 00530 30.0 45.0 mg/L Weekly Composite Effluent Ammonia Nitrogen, Total (as N) - 00610 - Winter 4.0 20.0 mg/L Weekly Composite Effluent Ammonia Nitrogen, Total (as N) - 00610 - Summer 2.0 10.0 mg/L Weekly Composite Effluent Fecal Coliform MF, M-FC Broth,44.5C - 31616 (geometric mean) 200 400 #/100m1 Weekly Grab Effluent Total Residual Chlorine (TRC)2 - 50060 mg/L 2 / week Grab Effluent Total Residual Chlorine (TRC)2 - 50060 17 Ng/L 2 / week Grab Effluent Temperature, Water Deg. Centigrade - 00010 deg. C Weekly Grab Effluent Dissolved Oxygen - 00300 Daily average > 6 0 mg/L Weekly Grab Effluent Total Phosphorus (as P) - 00665 mg/L Quarterly Composite Effluent Total Nitrogen (as N) - 00600 mg/L Quarterly Composite Effluent pH - 00400 > 6.0 and < 9.0 standard units Weekly Grab Effluent Temperature, Water Deg. Centigrade - 00010 deg. C Weekly Grab U & D Dissolved Oxygen- 00300 mg/L Weekly Grab U & D Winter: November 1 - March 31 Summer: April 1 - October 31 Footnotes: 1. U: at least 50 feet upstream from the outfall. D: at least 100 feet downstream from the outfall. 2. TRC limit takes effect on April 1, 2008. Until the limit becomes effective, the permittee shall monitor TRC (with no effluent limit). There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (2.) PERMIT RE -OPENER: SUPPLEMENTARY MONITORING The Division may, upon written notification to the permittee, require additional effluent monitoring that it deems necessary to support its water quality protection and restoration efforts in the receiving stream.