Non-Field Policies

Municipal, Industrial, Commercial and Other Laboratories

The following section provides a list of interpretive rules and policy statements issued by the NC WW/GW Laboratory Certification program. They are meant to clarify existing legislative rules or to provide guidance where a rule does not exist. Where multiple editions of a single reference source may be approved for reporting purposes and where these approved methods may have conflicting or unclear requirements, the NC WW/GW LC program may adopt a single policy based on a single edition to provide consistency in analytical reporting. Even when citing an alternate reference edition, laboratories must adhere to the NC WW/GW LC policy requirement. 

Parameter Policy Rev Date
General Quality Control Error Corrections     11/30/2007 
  Servicing Analytical Balances    12/22/2007
  Calibration Verification for Colorimetric, Ion Electrode and Metals Analyses   2  02/18/2014
  Weight Verification     05/23/2008
  Infrared (IR) Thermometer Calibration Verification   4  06/26/2015
  Second Source Standards  1  07/08/2010
  Matrix Spiking - also refer to the Technical Assistance document by clicking here. 3  05/11/2012
  Traceability of Chemicals, Reagents, Standards and Materials  1  12/10/2009
  Electrode Slope/Efficiency Documentation     10/02/2013
  Qualifying Data   1  04/06/2011
  Chemical, Reagent and Consumable Expiration Dates     01/07/2009
  Correlation Coefficient for Linear Calibration Curves   2  12/23/2014
  Pipettor Calibration    03/25/2009
  Analyzing PT Samples in the Same Manner as Environmental Samples  3  05/31/2011
  Manual Integration    04/09/2010
  Electronic Data Storage, Signature and Reporting Policy    04/09/2010
  Blank Acceptance Criterion  2  02/17/2014
  In-line Meter Calibration/Verification    01/01/2006
  Standardization of Titrants (removed - covered by MUR)    08/10/1998
  Required Documentation for Preservation and Hold Time    10/30/2014
       
INORGANIC PARAMETERS      
TRC  Total Residual Chlorine - Sealed Standards in a Field Setting     12/22/2007
BOD Flagging QC Failures in BOD Data  4  08/26/2014
  BOD - Checking DO Meter for Drift    07/09/2012
  Seed Correction Factor Acceptance Criterion    04/24/2013
  Measuring BOD/CBOD Sample Volumes    04/15/2013
  Reporting Limit Policy    04/24/2013
  Neutralizing Total Residual Chlorine in BOD Samples   10/30/2014
CBOD CBOD GGA Standard Acceptance Criterion  2 11/04/2013
  Seed Correction Factor Acceptance Criterion    04/24/2013
  Measuring BOD/CBOD Sample Volumes    04/15/2013
  Reporting Limit Policy    04/24/2013
Residue TSS Reporting Limit  2  09/25/2014
  TSS Blank Initial Constant Weight  2  07/03/2014
  TS and TDS Reporting Limit   2  09/29/2014
  TSS, TDS and TS Constant Weight/Drying Time Verification    03/09/2009
NH3 Ammonia and Fluoride Distillation Study Requirements - Also refer to the Ammonia/Fluoride Distillation Technical Assistance document here. 2  05/31/2016
COND Automatic Temperature Compensator (ATC) Verification    02/01/2006
BACTI Quanti-Tray Sealer Check  2

07/02/2013

  Fecal Coliform MF Consumables Testing  4 02/07/2017
  Fecal Coliform Reporting  2

04/08/2016

  Fecal Coliform Sample Bottle Sterility  

09/23/2016

  Fecal Coliform MF Culture Positive  

09/22/2016

  Fecal Coliform MF  Reagent Water Testing 2

01/20/2017

OIL & GREASE Oil and Grease Duplicates   03/10/2016
TURBIDITY Turbidity Sample Dilution   10/10/2014
  Turbidity Standards   06/24/2016