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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 Sample Submission Guidance Document is designed to provide a uniform set of procedures for sample submission to the WSS Central and Regional 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. Similar procedures should be followed when submitting samples to the DWR laboratory located in the Asheville Regional Office.

  • Click here to download a printable version of the WSS Chemistry Laboratory's Sample Submission Guidance Document

 

Sample Collection, Preservation, and Submittal

Field Sheets and Chain-of-Custody Forms - for Sample Collection & Submittal

Surface Water Samples - Preservation and Hold Time Table

Ground Water and UST Samples - Preservation and Hold Time Table

Sample Preservation Guidance

Sample Submittal - Contacts and Notification Updated June 2014

 

Time-Sensitive Samples: Submittal Guidance

The following guidance is provided regarding sample submission for time-sensitive parameters to the Central Laboratory in Raleigh:

Submitting Samples for Time-Sensitive Parameters  Updated April 2014

Prior to submitting samples for the parameters listed in the table below, please read this document and the Sample Submission Restriction Calendars (see 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) 

 

Submittal Restrictions for State Holidays

Sample Submittal Forms (Field Sheets)

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

FormFormat
Surface Water Field SheetPDFExcel
Ground Water Field SheetPDFWord
Underground Storage Tank Field SheetPDFExcel
WQ Sediment and Tissue Field SheetPDFWord

Instructions for completing a Water Quality Field Sheet

Instructions for completing a Groundwater Field Sheet

 

Chain of Custody Forms

FormFormat
Surface Water Chain of Custody PDF Word
Ground Water Chain of Custody PDF Word
Underground Storage Tank Chain of Custody PDF Word

 

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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