15A NCAC 18A .3802 SAMPLE COLLECTION
(a) Within 30 days after it issues a certificate of completion for a newly constructed private drinking water well, the local health department shall obtain water samples and submit them to a certified laboratory for analyses or ensure that the water obtained from the well has been sampled and tested by a certified laboratory, in accordance with the rules of this Section.
(b) Samples collected from private drinking water wells pursuant to the rules of this Section shall be collected by an employee of a local health department, or a certified laboratory. The sample collector shall use aseptic sampling techniques for collection of coliform bacteria and sampling techniques and containers for chemical constituents following methods described in 40 Code of Federal Regulations 141.23 Inorganic Chemical Sampling and Analytical Requirements and 40 Code of Federal Regulations 143.4 Monitoring, which are incorporated by reference including any subsequent amendments, additions or editions. A copy may be obtained from the National Archives and Records Administration through their website at http://www.gpoaccess.gov/cfr/index.html.
(c) Water samples shall be collected from the sample tap at the well or the closest accessible collection point to the water source with a tap capable of being disinfected, provided the sampling point shall precede any water treatment devices.
(d) It is the responsibility of the well owner to provide access and a source of power for the purpose of collecting the required water sample.
(e) For all new private drinking water wells, samples for total coliform and fecal coliform bacteria shall be collected after the disinfectant agent has been flushed from the well and water supply system. The water shall be determined to be free of disinfectant before collection of samples for bacteria. Required water samples shall not be collected from wells that are not constructed and located in accordance with the rules of 15A NCAC 02C .0100 and .0300.
(f) Samples shall be transported to the laboratory following the procedures for sample preservation and within holding times required in 40 Code of Federal Regulations 141.21(f) Analytical Methodology, 141.23 Inorganic Chemical Sampling and Analytical Requirements, and 143.4 Monitoring, which are hereby incorporated by reference including any subsequent amendments, additions or editions. Copies may be obtained from the National Archives and Records Administration through their website at http://www.gpoaccess.gov/cfr/index.html.
(g) Additional or retest samples may be collected if:
(1) during the permitting, construction and sampling process, information indicates the potential for other contaminants to be present in the groundwater source; or
(2) if necessary to confirm initial testing results.
History Note: Authority G.S. 87-97;
Eff. July 1, 2008.