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Home My WebLink AboutNC0034860_Regional Office Historical File Pre 2018 (32)Beverly Eaves Perdue Governor FILE NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Coleen H. Sullins Director Dee Freeman Secretary May 27, 2011 Mr. Darren Webb WWTP Operator -In -Responsible Charge Schneider Mills, Inc. 1170 Hwy 16 North Taylorsville, North Carolina 28681 Subject: Toxicity Test Results Schenider Mills - Taylorsville WWTP NPDES Permit No. NCO034860 Alexander County, NC Dear Mr. Webb: Enclosed is a copy of the toxicity test results relative to the inspection conducted at the subject facility on May 17, 2011 by John Lesley of this Office. Whole effluent samples were collected for use in a chronic pass/fail toxicity test. The test utilizing these samples resulted in a pass. The report should be self-explanatory; however, should you have any questions concerning this report, please do not hesitate to contact Mr. Lesley or me at (704) 663-1699. Since ly, . F4obert B. Krebs egional Supervisor ��-- Surface Water Protection Enclosure cc: Central Files Susan Meadows, Aquatic Toxicology Unit Mailing Address Phone (704) 663-1699 Location ' 610 East Center Avenue, Suite 301 Fax (704) 663-6040 610 East Center Avenue, Suite 301 Mooresville, NC 28115 Mooresville, North Carolina NorthCarolina Naturally Internet: www.ncwaterguality.ore ' Customer Service 1,877-623-6748 An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper NPDES Permit No. NCO034860 Page 2 Whole effluent samples were collected on May 17 and 19, 2011 by John Lesley and Darren Webb for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. Schneider Mills WWTP has an effluent discharge permitted at 0.78 MGD entering Muddy Creek (7Q10 of 1.40 CFS). The test using these samples resulted in a pass. Toxicity test information follows: Test Type . Test Concentration Test Result Control Survival Control Mean Reproduction Test Treatment Survival Treatment Mean Reproduction First Sample pH First Sample Conductivity First Sample Total Residual Chlorine Second Sample pH Second Sample Conductivity Second Sample Total Residual Chlorine 3-Brood Ceriodaphnia dubia pass/fail 46% sample PASS 100% 26.4 neonates 100% 23.3 neonates 7.2 SU 213 micromhos/cm <0.10 mg/I 7.32 SU 247 micromhos/cm <0.10 mg/l Test results for these samples indicate that the effluent would not be predicted to have water quality impacts on the receiving stream. G Division, of Water Quality May 26, 2011 MEMORANDUM To: Rob Krebs , Surface Water Protection, MRO Through: Cindy A. Moore Q-L--- Supervisor, Aquatic Toxicology Unit From: Carol Hollenkamp Cl` Quality Assurance O icer, Aquatic Toxicology Unit Subject: Whole effluent toxicity test results Schneider Mills WWTP NPDES Permit # NCO034860/001 Alexander County The aquatic toxicity test using 24-hour composite samples of effluent discharged from Schneider Mills WWTP has been completed. Schneider Mills WWTP has an effluent discharge permitted that is 0.78 million gallons per day (MGD) entering Muddy Fork Creek (7Q10 of 1.40 CFS). Whole effluent samples were collected on May 17 and May 19 by John Lesley and facility representative Damen Webb for use in a chronic Ceriodaphnia duhia pass -fail toxicity test. The test using these samples resulted in a pass. Toxicity test information follows. Test Type Test Concentrations Test Result Control Survival Control Mean Reproduction Test Treatment Survival Treatment Mean Reproduction First Sample pH First Sample Conductivity First Sample Total Residual Chlorine Second Sample pH Second Sample Conductivity Second Sample Total Residual Chlorine 3-Brood Ceriodaphnia duhia chronic pass fail 46% Pass 100% 26.4 neonates 100% 23.3 neonates 7.20 SU 213 micromhos/cm <0.10 mg/L 7.32 SU 247 micromhos/cm <0.10 mg/L Test results for the above samples indicate that the effluent would not be predicted to have water quality impacts on receiving water. Please contact us if further effluent toxicity monitoring is desired. We may be reached at (919) 743-8401. Basin: CTB32 cc: Central Files John Lesley, MRO Aquatic Toxicology Unit Environmental Sciences Section