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r { 2777 ButWhp Drive <br /> i SURS 200 <br /> r Walnut Creek, CA 945% <br /> 4* (3�MOW(Fox' <br /> ,F <br /> 8 December 1993 <br /> „'. Ms. Mary Meays <br /> Environmental Health Division <br /> San Joaquin County <br /> r ' ' 4451 N. San Joaquin Street ERM <br /> ti Stockto4 California 95201 <br /> SUBIECT: Confirmatory Soil Sampling <br /> Aerated Soil pile <br /> 1325 Weber Avenue Site <br /> Dear Mary <br /> Following our telephone conversation of today, ERM EnviroCleart West Inc, <br /> (EnviroCleark-West) is writing this leiter to confirm the details of the <br /> PTOP°sed confirmation sampling at the subject site. The sampling <br /> requirements will be as follows: <br /> Per San Joaquin County's requirement, Enviroaean-West will <br /> collect soil samples from the aerated pile from 20 discrete locations. <br /> The discrete samples will be romposited into 10 samples for laboratory <br /> analysis. All samples will be analyzed using EPA Method 8015/8020 <br /> (gasoline). <br /> Relatively undisturbed samples will be collected inside brass tubes <br /> hxam the aerated soil pile approximately 3 feet below pile surface using <br /> a hand-auger with a bucket and a slide hammer with a sample sleeve. <br /> All aamphng gear will be changed or deeDntaminated between,each <br /> sample location. Ail samples will be stored in a cooler, chilled with ice, <br /> immediately after collection. Chain-of-custody forms will be used for <br /> sample logging and tracking. <br /> The sampling will begirt at 10:00 AM on 9 December 2993 (thursday), <br /> and will be Inducted, in the presence of a San Joaquin County official. <br /> We estimate that the sampling process will be comploRd in about 4 <br /> hours. <br /> A h&MdW of Ow [ran AnW <br /> . �soprau�Mui�M�flDli� <br />