Laserfiche WebLink
z <br /> 4 <br /> r FIELD PROCEDURES <br /> Groundwater Measuring, Purging, and Sampling <br /> The water level in each well was measured with an electronic water level indicator The wells <br /> were checked for free product with clean, disposable polyethylene bailers prior to purging and <br /> sampling When free product was not observed, groundwater from monitoring wells MW 1 <br /> through MW4 was purged with a clean submersible pump Purging of the wells included the <br /> removal of approximately three well volumes of water from,each well Groundwater samples <br /> were then collected through the pump tubing and decanted into appropriate sampling containers <br /> provided by the analytical laboratory The samples were immediately placed in an ice chest <br /> containing ice Samples were transported under chain-of-custody documentation to a California <br /> Department of Health Services-certified laboratory for analysis of Total Petroleum Hydrocarbons <br /> as gasoline (TPH-g) using modified EPA method 8015 and Benzene, Tohiene, Ethylbenzene, and <br /> Total Xylenes (BTEX) <br /> The sampling equipment was cleaned with a solution of Liqui-nox" detergent and water between <br /> each well to minimize the potential for cross-contamination All water removed during purging <br /> operations was placed in sealed, labeled 55-gallon drums and stored on-site <br /> 5 <br /> WALLACE KUHL <br /> xryckdfxy,'r &ASSOCIATES INC <br />