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� { F <br /> r� <br /> f <br /> Knowles Gas Station <br /> 7 202/799-5027.02 <br /> July 21, 1988 <br /> On February 2, 1988, the 3 existing groundwater monitoring <br /> awells were re--sampled. The sampling results are again summarized <br /> + in the following sections and presented in Appendix II. <br /> i <br /> SCOPE OF WORK <br /> The following services were conducted at the site during <br /> June, 1988 as part of the continued subsurface hydrocarbon <br /> 3 investigation. <br /> Drilled and sampled one deep soil boring and ten <br /> shallow borings at various locations on-site. } <br /> "} Monitored and surveyed three existing groundwater wells <br /> to determine the local groundwater gradient and flow <br /> ..:`f <br /> directions. <br /> Purged the three existing groundwater monitoring wells s <br /> . and collected samples. <br /> Analyzed selected soil samples for total petroleum <br /> k ` f hydrocarbons (TPH) as gasoline, benzene, toluene, <br /> ethylbenzene and xylene (BTEX) , total lead, and <br /> �s ethylene dibromide {EDB} . <br /> 3 <br /> Analyzed groundwater samples for the aforementioned <br /> SOIL BORINGS <br /> s <br /> s Thesoil borings were drilled to explore subsurface <br /> conditions in and around the former pump islands, product lines <br /> T <br /> ! ' <br /> rIrI <br /> tl <br />