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HomeMy WebLinkAboutNC0020656_Lab Performance Evaluation_20010201North Carolina Department of Environment and Natural Resources Michael F. Easley, Governor Sherri Evans -Stanton, Acting Secretary February 1, 2001 133 Mr. Robert Ellis Leith Creek WWTP Lab. P.O. Box 249 Covington Street Ext. Laurinburg, NC 28353-0249 Subject: 2000 Performance Evaluation Study Dear Mr. Ellis: ATA NCDENR FM 2001 ,df.AVEnrE.1,41 LE The North Carolina Wastewater/Groundwater Laboratory Certification program has received the 1) Environmental Resource Associates (ERA) study results that were submitted. Our program requires you to analyze blind (unknown) performance ampuls for all parameters that currently appear on Attachment I of your Certified Parameter list. The study you submitted did not contain acceptable values, or analytical values were not provided for the following parameters: 1. Turbidity NO VALUE PROVIDED 2. Conductivity NO VALUE PROVIDED 3. Ammonia Nitrogen Unacceptable results provided If your laboratory has already conducted a blind study for these analyses in 2000, please supply this office with a copy of the results. If a blind study was not completed in 2000, your laboratory must secure and analyze performance evaluation samples and have your approved selected vendor provide us with the results. Likewise, our program requires that you arrange to procure blind follow-up samples for all unacceptable results. Please notify this office within 10 days, by fax, e-mail, telephone, or U.S. Postal service of your intent to complete these requirements. Fax: 919 - 733 - 6241 E-mail: Tonja.Springer ncmail.net Telephone: 919 - 733 - 3908 Address: 1623 Mail Service Center Raleigh, NC 27699-1623 Contact us at 919-733-3908, extension 254, if you have questions concerning our program requirements. Sincerely, cit__\\ a Tonja Springer Laboratory Section TS: is cc: James W. Meyer Norman L. Good Fayetteville Regional Office 1623 Mail Service Center, Raleigh, North Carolina 27699-1623 Study2000.Itr Phone: 919 - 733-3908 \ FAX: 919 - 733-6241. \ Internet: www.enr.state.nc.us/LAB/ AN EQUAL OPPORTUNITY \ AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED / 10% POST CONSUMER PAPER