Laserfiche WebLink
Clayton <br /> Preservatives are not added to any sample, unless instructed If requested, they are supplied <br /> by Clayton's laboratory. <br /> All sample containers are labeled in the field. Labels contain the followil g information <br /> project name, sample identification number, project number, date and time of collection, and <br /> sampler'b initials <br /> Under no circumstances are sealed sample containers opened by anyone other than the <br /> laboratory personnel who perform the requested analyses If it is necessary for samples or <br /> sample chests to leave the immediate control of the sampler prior to delivery to the <br /> laboratory, for example during shipment by Federal Express, a custody seal is placed on each <br /> sample container and/or sample chest to ensure that the samples have not been tampered <br /> with during transportation. The custody seal is signed by the sampler, and the date and time <br /> that the seal was placed is recorded The elapsed tune between sample collection and <br /> delivery to the laboratory never exceeds 48 hours. Water samples are not held for more than <br /> 14 days prior to analysis and are kept at 4°C at all tunes. <br /> To document and trace samples from time of collection, a signed chain-of-custody record is <br /> filled out by the sampler and accompanies the samples through the laboratory analyses The <br /> completed chain-of-custody is included with the analytical report from the laboratory <br /> REEMENMS <br /> Groundwater Monitoring Guidelines, Revised February 1990. Alameda County District <br /> Groundwater Protection Program <br /> j Leaking Underground Fuel Tank (LUFT) Field Manual. Guidelines for Site Assessment, <br /> Cleanup, and Underground Tank Closure, May 1988 State of California LUFT Task Force <br /> Regional Board Staff Recommendations for Initial Evaluation and Investigation of <br /> Underground Tanks, Revised November 1989 North Coast, San Francisco Bay, and Central <br /> Valley regions of the California State Water Quality Control Board <br /> Standards for the Construction and Destruction of Wells and Otner Dcep Excavations in <br /> Santa Clara County, Revised Juae 1989 Santa Clara Valley Water District <br /> t <br /> r <br /> 4 <br /> t <br /> i <br /> 1 <br /> '� Pmtotd.hY <br />