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HomeMy WebLinkAboutNC0071943_Permit Modification_19990823\- State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Kerr T. Stevens, Director Mr. J. Richard Howell, Jr. Town Administrator P.O. Box 1014 Bolling Springs, North Carolina Dear Mr. Howell: 28017 /4 ��IIIIIIIIII EL NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES August 23, 1999 Subject: NPDES Permit Modification NPDES Permit NC0071943 Boiling Springs WWTP Cleveland County Your recent notification to Division personnel of an error in your permit resulted in a review of the permit file by the NPDES Unit. You correctly pointed out that the correct permit number was not present on the Effluent Limitations and Monitoring requirements pages in your permit. This permit modification corrects that typographical error. Please find enclosed the revised permit pages. These pages should be inserted into your permit. The old pages 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, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and binding. If you have any questions concerning these permit modifications, please contact Charles Weaver at (919) 733-5083, extension 511. SiiQcerely, err T. Stevens cc: Central Files Mooresville Regional Office, Water Quality Section Point Source Compliance Enforcement Unit NPDES Unit 1617 Mail Service Center, Raleigh, North Carolina 27699.1617 Telephone (919) 733-5083 FAX (919) 733.0719 An Equal Opportunity Affirmative Action Employer 50%recycled / 10%post-consumer paper PermitNCO071943 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL During the period beginning upon the effective date of the permit and lasting until expansion above 0.30 MGD, 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 Measurement Frequency Sample Type Sample Location Flow 0.30 MGD Continuous Recording Influent or Effluent BOD, 5 day (204C)l 30.0 mgll 45.0 mg/I Weekly Composite Influent & Effluent Total Suspended Residuel 30.0 mgll 45.0 mg,/1 Weekly Composite Influent & Effluent NHa as N Weekly Composite Effluent Fecal Coliform (geometric mean) 200 / 100 ml 400 / 100 ml Weekly Grab Effluent Total Residual Chlorine2 2/Week Grab Effluent Total Nitrogen (NOz+NOa+TKN) Semi -Annual Composite Effluent Total Phosphorus Semi -Annual Composite Effluent Temperature CC) Daily Grab Effluent pH3 Weekly Grab Effluent Footnotes: 1. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 2. Monitoring is required only if chlorine is added for disinfection. 3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NC0071943' A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL During the period beginning after expansion above 0.30 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 Frequency Sample Type Sample Location Flow 0.60 MGD Continuous Recording Influent or Effluent BOD, 5 day (202C)l 30.0 mgA 45.0 mgA Weekly Composite Influent & Effluent Total Suspended Residual 30.0 mg/1 45.0 mgA Weekly Composite Influent & Effluent NH3as N (April 1 -October 3l 15.0 mg/L Weekly Composite Effluent NH3 as N November 1 - March 31 Weekly Composite Effluent Fecal Coliform (geometric mean) 200 / 100 ml 4001100 ml Weekly Grab Effluent Total Residual Chlorine2 28.0 Ng/L 2/Week Grab Effluent Total Nitrogen (NO2+NO3+TKN) Semi -Annual Composite Effluent Total Phosphorus Semi -Annual Composite Effluent Temperature (4C) Daily Grab Effluent pH3 Weekly Grab Effluent Footnotes: 1. The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 2. Monitoring is required only if chlorine is added for disinfection. 3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample There shall be no discharge of floating solids or visible foam in other than trace amounts.