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N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Water Quality - Guidance Documents

Water Quality

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Guidance Documents

Municipal, Industrial, Commercial and Other Laboratories

Guidance documents are meant to provide detailed information for meeting policy or regulatory requirements.

Document Revision Date Description
Procedure for Testing Consumable Materials for Biological Testing  08/08/2008  A procedure for verifying the efficacy of new lots of consumable materials used for biological testing 
Fecal Coliform Reporting Guidelines  03/25/2003 Guidelines for enumerating and reporting fecal coliform results
LDO Daily Calibration Verification Procedure  06/16/2009 A procedure for verifying the calibration of Luminescence Dissolved Oxygen (LDO) meters by back calculation with solubility table
Calibration of Pipettors  07/30/2009 An example procedure for the gravimetric verification of mechanical liquid dispensing devices 
Matrix Spiking Technical Assistance Document  05/11/2012 A document describing appropriate matrix spiking frequencies and practices 
Memo to Permittees Regarding TRC 50 µg/L Compliance Level   05/01/2008 A memo from the NC DWQ Point Source Branch describing the 50 ppb compliance level for Total Residual Chlorine (TRC)
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