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m <br /> S <br /> SOIL SAMPLING [`�J <br /> Soil samples will betaken at 5.0' intervals starting at a borehole depth of 10.0'. Standard BX tube <br /> samples will be taken from an eight inch hollow stem auger. Each soil tube will be capped with a <br /> layer of aluminum foil secured by plastic caps, labeled for identification, and stored on ice for <br /> transport to the laboratory. All bore holes will be logged during the drilling using the standard soil <br /> classification method. Soil samples will be transported under a chain of custody to Sherwood Labs <br /> of Hilmar, Ca. for analysis. Samples will be analyzed per EPA Methods 8020 (BTEX), (MTBE), and <br /> 5030/8015(M) TPH=Gasoline. <br /> MONITORING WELL DEVELOPMENT <br /> After soil sampling is completed, boreholes will be developed into four inch PVC cased monitoring <br /> wells. Well depth, length of screened well casing and sand filter, and the location of bentonite plug <br /> will be determined in the field by the (PHS-EHD) representative and Foothill Engineering.-Permits <br /> for the monitoring wells and boreholes will be obtained by the drilling subcontractor from the (PHS- <br /> EH). Monitoring wells will be developed and purged before gauging and water sampling. <br /> Monitoring wells will be equipped with a locking cap and a cover suitable to support the traffic found <br /> on the site. <br /> MONITORING WELL TESTING <br /> Each monitoring well will be gauged and water samples obtained and analyzed quarterly. A report <br /> summarizing the quarterly results of gauging and testing of each monitoring well will be prepared by <br /> the site owner's consultant. <br /> SUMMARY <br /> The workplan lan calls for Foothill Engineering to secure the services of a licenced drilling contractor <br /> p l; <br /> to drill three boreholes at the locations shown on the site drawing. Soil samples from the hollow <br /> stemmed auger will be taken on five foot intervals during the drilling operation. Properly prepared <br /> samples will be transported under chain of custody to Sherwood Labs. A report of the findings of the <br /> drill hole logs and the soil sample analysis will be prepared by Foothill Engineering for review by all } <br /> =concerned jia tes. <br /> Please address any questions, corrections or additions to Ery Rifenburg, Foothill Engineering, Phone <br /> 209/368-9381 <br /> I <br /> Respectfully submitted, <br /> Foothill Engineering <br /> Ery Rifenburg PE <br />