D.C. Mun. Regs. tit. 21, r. 21-1902

Current through Register Vol. 71, No. 49, December 6, 2024

Rule 21-1902 - QUALITY ASSURANCE MANUAL

1902.1

The quality assurance manual shall include the following information for sample collection and field data collection:

(a) Procedures for sample container preparation, labelling and quality assurance checks;

(b) Methodology and equipment used for sample collection;

(c) Chain of custody sheets and procedures for their use;

(d) Standardization and calibration procedures for field measurement equipment;

(e) Acceptable limits for standardization and calibration of field instruments;

(f) Data log sheets or sample formats for recording instrumental field measurements;

(g) Sample holding conditions and times; and

(h) Percentage of duplicate and split samples to be collected and the procedures for collecting them.

1902.2

The quality assurance manual shall contain the following information for laboratory analysis of samples:

(a) Most recent laboratory certification results;

(b) A reference for the analytical procedure used for each parameter if the procedure used is from Standard Methods for the Examination of Water and Wastewater, American Society for Testing Materials Protection Agency manual, or the U. S. Environmental procedures;

(c) If the procedure is not from one (1) of the three (3) sources but is widely used and accepted as accurate by the scientific community, then the details for the entire procedure shall be included;

(d) For experimental procedures, the entire procedure shall be included and the Director may issue conditional approval of the procedure if it appears to be acceptable;

(e) Maintenance, calibration and standardization log books shall be maintained and a list of the equipment covered and samples of the logs shall be included in the quality assurance manual;

(f) The percentage or rate of duplicate, spike and replicate sample analyses-for each parameter;

(g) For biological and taxonomic sampling, the references used and quality assurance methods shall be described;

(h) Description of the quality control procedures if the data is entered into a computerized data base; and

(i) The basis and methods for determining whether the data is judged to be acceptable.

D.C. Mun. Regs. tit. 21, r. 21-1902

Final Rulemaking published at 42 DCR 654, 655 (February 3, 1995)