Laserfiche WebLink
1 <br /> I� I IN <br /> i <br />' The elevation and location of the new well will be surveyed after installation Locations <br /> will be measured to the nearest 1/10 foot and elevations to the nearest 1/100 foot relative <br />' to mean sea level An Orion California-registered civil engineer will supervise or direct <br /> the well construction and installation <br /> 1 <br /> 2.2.4 Groundwater Sampling Procedures <br />' The four site wells will be sampled after installation and development of the new well <br /> P P <br />' The depth to groundwater and total well depth will be measured before sampling using an <br /> electric water well sounder Approximately 3 to 5 casing volumes will be purged from <br />' the wells before sampling Throughout purging and lust before sampling the wells, the <br /> pH, specific conductivity, and temperature of the evacuated groundwater will be <br /> measured and recorded These measurements will be made to confirm that the well is <br />' purged sufficiently Water samples will be collected after the measurements stabilize to <br /> within 10 percent of the previous readings A sample well purging and sampling log is <br /> provided in Appendix B <br /> Sampling will be performed using either a Teflon or disposable polyethylene bailer <br /> suspended from a nylon line If Teflon bailers are used, they will be decontaminated <br />' between each well using the procedures in Section 2 3 3 The bailers will be equipped <br /> with a bottom-release device <br />' Water samples will be collected from the wells in new bottles provided by the analytical <br /> laboratory Water samples will be collected in 40-milliliter glass bottles with Teflon-lined <br /> caps These samples will be collected so that no headspace is present in the bottle A <br /> field (equipment) blank will be collected after decontamination of the sampling <br /> equipment A field blank will not be collected if the wells are sampled using disposable <br /> bailers The samples will be shipped to and analyzed by a State-certified laboratory <br /> following the analytical program described in Section 3 1 <br /> S\BFS\STOCKTON\WKP003 DOC 03/22/01 2_4 <br />