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N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Water Quality - Sample Submission

Water Quality

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Sample Submission Guidance 

The Water Sciences Section's Chemistry Laboratory maintains a Sample Submission Guidance Document that is designed to provide a uniform set of procedures for sample submission to the WSS Central and Asheville Laboratories. The protocols outlined in this document are applicable to parties responsible for the collection, handling, field screening, documentation, packaging, shipping and receipt of samples. Efforts to improve current procedures will continue and this document will be revised, as needs dictate. 

Sample Collection & Submittal - Guidance Documents:

 

Sample Collection & Submittal Forms:

The following forms are to be used by DWR sample collectors when submitting samples to the WSS Central Laboratory and Asheville Regional Laboratory.

Field Sheets

Form Format
Water Sample Field Sheet - Central Lab PDF Excel
Water Sample Field Sheet - Asheville Lab PDF Excel
Underground Storage Tank Field Sheet PDF Excel
WQ Sediment, Soil and Tissue Field Sheet PDF Word

Updated on March 23, 2015: 

New Water Sample Field Sheets are posted above, and beginning on April 1, 2015 should be used for the collection and submission of all water samples (surface and ground). We encourage anyone collecting and submitting water samples to use the new forms; however, the current surface and ground water forms will still be accepted to provide a transition period.

Beginning on May 4, 2015, the new field sheets will be required for the submittal of water samples to the Central Laboratory and the Asheville Laboratory. If you have any questions, please contact Roy Byrd at (919) 733-3908, ext. 222. 

Chain of Custody Forms

Form Format
Surface Water Chain of Custody PDF Word
Ground Water Chain of Custody PDF Word
Underground Storage Tank Chain of Custody PDF Word

 

Time-Sensitive Samples - Submittal Guidance:

The following guidance is provided regarding sample submission for time-sensitive parameters (see table below; hold times of 48 hours or less) to the Central Laboratory in Raleigh and Regional Laboratory in the Asheville Regional Office. Prior to submitting samples for these parameters, please review the guidance document and Sample Submission Restriction Calendars (for state holidays) below:

Biochemical Oxygen Demand - 5 day (BOD5)  MBAS (Methylene Blue Active Surfactants)
Chlorophyll a  Nitrite (NO2)
Coliform - Total and Fecal by Membrane Filtration (MF)  Orthophosphate (PO4)
Color - ADMI and Platinum Cobalt (PtCo)  Turbidity
Hexavalent Chromium (Cr VI)  

 

Sample Submittal Restrictions for State Holidays:

Table format (pdf) - List of State Holidays & Dates with Sample Submittal Restrictions:

Calendar format (Excel) - Displays State Holidays & Dates with Sample Submittal Restrictions:

 

Purpose of these Documents and Forms:

The primary goal of these documents is to promote the use of procedures that will ensure that data reported by the laboratory is accurate as well as legally and technically sound. Errors in environmental analysis can result from incorrect sampling handling or lack of supporting documentation.

Factors that may ultimately affect the integrity of reported analytical data include:

  • Obtaining a representative sample;
  • Preventing contamination of the sample;
  • Proper preservation of the collected sample and attention to sample hold times (to protect the sample from chemical, physical or biological changes prior to analysis);
  • Providing legal documentation of the sampling event, and if necessary chain-of-custody

The WSS Chemistry Laboratory is committed to providing high quality data and excellent service in environmental analysis. To ensure that the results produced and reported meet the requirements of the data users and comply with state and federal regulations, a quality management system must be implemented that is clear, effective, well-communicated, and supported at all levels of the Division of Water Resources.

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