The URL can be used to link to this page

Home My WebLink AboutNC0065358_permit modification_20011031O�TF�9 ATA NCDENR Mr. Michael J. Power 1423 Great Neck Road, Suite 205 Virginia Beach, Virginia 23454 Dear Mr. Power: Michael F. Easley Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality October 31, 2001 Subject: NPDES Permit Modification Permit NC0065358 Hidden Forest Estates WWTP Randolph County The subject permit was issued on July 25, 2001. Personnel in the NC DENR Winston-Salem Regional Office have since reviewed the final permit and requested that one change be made. After review of the permit file and, we concur with the request. Accordingly, the Division has modified the subject permit as follows: ➢ The Effluent Limits and Monitoring Requirements page has been updated. The total residual chlorine (TRC) limit now applies only if chlorine is added to the treatment system. Constant TRC monitoring is no longer required, as the UV disinfection system has replaced chlorine disinfection. 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, 6141k2'). ��Gregory J. Thorpe, Ph.D. cc: Central Files Winston-Salem Regional Office, Water Quality Section Point Source Compliance Enforcement Unit NPDES Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 An Equal Opportunity Affirmative Action Employer Telephone (919) 733-5083 FAX (919) 733-0719 VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES Permit NC0065358 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit 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 Daily Maximum Measurement Frequency Sample Type Sample Location1 Flow 0.027 MGD Continuous Recording Influent or Effluent BOD, 5-day (20°C) (April 1 — October 31) 5.0 mg/L 7.5 mg/L 3/Week Composite Effluent BOD, 5-day (20'C) (November 1 — March 31) 10.0 mg/L 15.0 mg/L 3/Week Composite Total Suspended Residue 30.0 mg/L 45.0 mg/L 3/Week Composite Effluent NH3 as N (April 1 — October 31) 2.0 mg/L 3/Week Composite Effluent NH3 as N (November 1 — March 31) 4.0 mg/L 3/Week Composite Effluent Dissolved Oxygen2 3/Week Grab Effluent, Upstream & Downstream Fecal Coliform (geometric mean) 200 / 100 ml 400 / 100 ml 3/Week Grab Effluent, Upstream & Downstream Total Residual Chlorine3 17 pg/L 3/Week Grab Effluent Temperature (°C) 3/Week Grab Effluent, Upstream & Downstream Total Nitrogen (NO2+NO3+TKN) Monthly Composite Effluent Total Phosphorus4 2.0 mg/L Weekly Composite Effluent pH5 3/Week Grab Effluent Footnotes: 1. Upstream = at least 100 feet upstream from the outfall. Downstream = at least 100 feet downstream from the outfall. 2. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L. 3. Limits and monitoring apply only if chlorine is added to the treatment system. 4. Compliance shall be based on a quarterly average of weekly samples. 5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts.