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i <br /> Mr.M. Scott Mansholt—CEMC <br /> Soil and Groundwater Investigation Work Plan Addendum November 30,2009 <br /> Tracy Byron Road Page 3 of 3 <br /> To evaluate the suitability of the uppermost groundwater for drinking water use, one sample will <br /> include analysis for the General Minerals as described in SAIC's 2007 revised work plan. The <br /> analytical results may be evaluated in combination with any available data from nearby <br /> HPP-BTR sites such as the Catellus Property, Dividend properties,Dobler Property, and/or <br /> Filios/Mansfield Property. <br /> SOIL BORING ABANDONMENT <br /> All soil borings will be sealed and abandoned in accordance with San Joaquin County <br /> Environmental Health Department requirements. Following the abandonment of borings, SAIC <br /> will record the latitude and longitude relative to the state plane coordinate system using a Global <br /> Positioning System. These data will be used to place the borings on a geo-referenced base map. <br /> REPORTING AND SCHEDULE <br /> SAIC anticipates beginning the investigation within 30 days following procurement of all <br /> necessary permits,bonds, and access agreements. On completion of field activities and receipt <br /> of all final analytical results, SAIC will report the findings of the investigation and make <br /> recommendations regarding future assessment activities. The report will be submitted to the <br /> RWQCB within 90 days after receipt of all final laboratory reports. <br /> If you have questions or comments, please call Mohamed Ibrahim at(916) 979-3828. <br /> Sincerely <br /> SCIENCE APPLICATIONS INTERNATIONAL CORPORATION <br /> Mohamed Ibrahim Michael Hurd, CHG 0068 <br /> Environmental Project Manager Senior Project Manager <br /> r: J <br /> Enclosures: .S - <br /> Figure 1. Vicinity Map ' ~" \` <br /> Figure 2. Site Map <br /> Figure 3. Proposed Boring Location Map <br /> Table 1. Proposed Boring Objectives <br /> Attachment A:Regulatory Correspondence <br />