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I <br /> U �.. . <br /> .teff Wong [EH] <br /> From: Jeff Wong [EH] ' <br /> Sent: Thursday, April 01, 2004 4:47 PM <br /> To: 'mjw@HaleyAldrich.com' I <br /> Subject: Soil and Grab Water sampling at 1805 Harbor, Stockton a <br /> Hi Joe: <br /> The following is the"cleanup"version of the letter I just sent a few minutes ago. <br /> As discussed in our telephone conversation today(April 1, 2004), San Joaquin County Environmental Health Department <br /> (EHD) is directing that grab water samples be collected in the soil borings in addition to the two hydropunch samples at the <br /> site located at 1805 Harbor Street, Stockton, as proposed in the"addendum letter to Site Investigation Work Plan"dated ' <br /> April 17, 2003, and the"Site Investigation Work Plan"dated December 9, 2002 prepared by Haley and Aldrich. <br /> EHD previously appoved installation of 2 deep soil borings, 1 monitoring well, and 10 direct push soil borings, with <br /> contingency of installing up to 18 soil borings based on conditions observed at the site and the necessity of defining the <br /> extent of the contamination in soil and in groundwater. However, it has come to EHD's attention that only 2 hydropunche <br /> grab water samples will be collected in the scope of work. This strategy is inadequate in defining the extent of the <br /> groundwater plume at the site. EHD directs that grab water samples in selected soil borings in addition to the two <br /> hydropunch samples be collected and.analyzed in substitution of some of the proposed soil samples.' The <br /> number of soil borings to be installed, as well as the number of soil samples and grab water samples to be collected, <br /> should be based on mobile laboratory results in the most cost-effective manner that will define the extent of the <br /> contamination in both soil and groundwater. <br /> EHD has scheduled implementation of the proposed work with Haley&Aldrich on April 5, 2004. A well installation permit <br /> will be issued by EHD as soon as EHD receives an application. <br /> Jeffrey Wong <br /> Senior Environmental Health Specialist <br /> Environmental Health Department <br /> San Joaquin County <br /> :h <br />