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C lavTon Grant Trigger Pae= Honizman Miller Schwartz and Cohn Clayton Proposal No. 97SFOEMR431 October 7, 1997 The location of all subsurface structures such as pipes, tanks, cables, and utilities within the property lines of the project site shall be correctly designated by the Client. Clayton will rely on the accuracy of such information provided by the Client. If the Client fails to provide such information or the information provided is inaccurate, Clayton shall not be responsible for the damage caused to the unknown or incorrectly designated subsurface structures nor for any injury to persons that result from the improper designation. The subject site is currently an active manufacturing facility, with a possible significant amount of pedestrian traffic. The Client will be responsible for providing access to the site as needed during soil sampling activities. Clayton will not be responsible for standby time incurred by the project which results from our inability to gain access to the site during sampling activities. Task 2: Soil Sample Collection Clayton's sampling program will focus on fiveareas.where TRPH releases have been confirmed in the shallow subsurface soils. The following table lists the five areas identified for additional sampling as follows: COMPLETED SAMPLES Sample Results Sample No. (TRPH) Location and Site Observations SS-1 @6" 370 ppm NW comer of Production Building, drum storage area, open pail with waste oil, dark staining on asphalt SS-2 @6" 480 ppm N V corner of Production Building, drum storage area, open pail with waste oil, dark staining on asphalt SS-4 @6" 230 ppm South side of Production Building near south perimeter fence, drum storage area, some brown staining on asphalt SS-5 @6" 3200 South side of Production Building, adjacent to the oil/water ppm separator C-15 @6" 770 ppm Unpaved former drum storage area on northwest side of site Clayton proposes drilling up to 7 investigative borings using truck-mounted Geoprobe equipment where access permits. Restricted areas, such as inside the Production Building, will be drilled by hand auger methods or portable probe equipment. Borings will typically be advanced to about 4 feet below the ground surface to determine the vertical extent of surfacial staining. Two borings around the oil/water separator will be advanced to approximately 16 feet in depth to determine if any significant releases have occurred. If field screening methods indicate the potential for contamination at the base K.'Z%IRIPROPOSALWHASEM97�3 I.WPD