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Wells Fargo Bank, Stockton Branch <br /> November 27, 1996 <br /> � Page 3 <br /> The work plan was submitted to the SJCEHD on September 6, 1996. Ms. Turkatte was <br /> contacted in October and November, 1996 regarding the status of the work plan. Ms. <br /> Turkatte is in the process of approving the work plan witli�a few revisions. The following <br /> issues were.discussed: <br /> • Building Analytics' proposed monitoring well MW-1 is very close to an existing <br /> monitoring well (MW-5), which was drilled and installed as part of a subsurface <br /> investigation at the neighboring service station. Ms. Turkatte suggested that the <br /> proposed monitoring well MW-1 be moved. <br /> Based on the verbal instructions from Ms. Turkatte of the SJCEHD, the location of <br /> MW-1 will be moved to the west side of the bankbuilding (Figure 1). <br /> • The subsurface conditions beneath the bank builing are unknown. A boring to <br /> explore this area would be very beneficial to determine if the subsurface soils had <br /> been impacted by former on-site conditions. Ms. Turkatte suggested that an angle <br /> boring to gather information beneath the banilc building would be helpful. <br /> However, based on the angle required to explore.11,the depths immediately below a <br /> former UST cavity and the distance from the edge of the building, Building <br /> Analytics does not believe that the information received from such an angle boring <br /> would be beneficial. Building Analytics believes that drilling up to two borings <br /> inside the building would be more beneficial. <br /> Proposed borings P-6 and P-7 have been added tot he interior of the bank building. <br /> This boring would be advanced to a maximum depth of 25 feet bgs or refusal. <br /> Samples would be collected every 5 feet and the samples from 5, 15 and 25 feet bgs <br /> would be submitted for analyses. <br /> Well permit/boring applications are being sent under separate cover. After receiving <br /> approval we will proceed with the investigation. <br /> If you have questions concerning the comments to this work plan, please call me at (818) <br /> 500-1898. <br /> Respectfully submitted, <br /> BUILDING ANALYTICS <br /> i <br /> i <br /> Jose .AMontoya, R.G., C.E.G. <br /> Seni�r Geologist <br /> Attachment: Revised Figure 1 <br /> u <br /> h <br /> i <br /> r. <br /> s <br /> V <br /> ii <br />