Laserfiche WebLink
December 23, ! 999 • • Page 2-! <br />S.O QUALITY ASSURANCE/QUALITY CONTROL (QA/QC) <br />' Water quality laboratory analyses will be conducted in accordance with a plan approved by <br />the BLM. A State of Colorado-certified laboratory will be used for all groundwater and surface <br />t water quality analyses for all designated sites and frequencies specified in this plan. American <br />Soda will use the USGS analytical laboratory, preferentially, to perform annual third-party <br />' validation of water quality data. American Soda's full-time environmental coordinator will assure <br />adherence to the QA/QC plan. Water quality sampling conducted by the USGS will be done <br />' according to USGS protocols and not necessarily those used by American Soda. <br />5.1 Groundwater Sampling Methods <br />' Groundwater sampling will be performed in accordance with the standard operating <br />procedures (SOP) developed for the site. The SOP for groundwater sampling is included as <br />t ' <br />i Appendix C and provides detailed instructions on the following topics: <br />• Equipment <br />' • Instrument calibration <br />• Well purging <br />~' • Sample collection <br />• Sample filtration <br />' • Field QA/QC procedures <br />The wells are equipped with dedicated sampling equipment. In the event dedicated <br />' equipment is inoperable, clean, decontaminated equipment will be used for all sampling activities. <br />Decontamination will be performed in accordance with the procedures given in Appendix D- <br />' Standard Operating Procedure for Equipment Decontamination. <br />' S.2 Calibration Procedures and Frequency <br />All instruments and equipment used during sampling and analysis will be operated, <br />' calibrated, and maintained according to the manufacturer's guidelines and recommendations, as <br />well as criteria set forth in the applicable analytical methodology references. Calibration, <br />' operation, and maintenance will be performed by personnel properly trained in these procedures. <br />Documentation of all routine and special maintenance and calibration will be maintained in an <br />' appropriate field log book. <br />Field instrumentation will be calibrated on-site at the beginning of each sampling day, or at <br />' any time that instrument readings are questionable. Calibration of the pH, conductivity, and <br />t Agapito Associates, Inc. <br />