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File No. 20-3978-01.W22 KLEINFELDER February 6, 1997 Kleinfelder has recently completed a review of plans for the Manteca Spreckels Plant provided to us by Spreckels Development Company. These plans were not available to us during the Phase I ESA referenced previously because their location and/or existence were apparently unknown. Review of Spreckels plan numbers 26774, 26775, and 20257 reveal two previously unknown septic systems on site (refer to Plates 2 and 3). This proposal presents a cost estimate and scope of work for evaluation of these two additional septic systems. Kleinfelder proposes to advance 4 Hydropunch IITm borings (2 at each septic system location) in order to collect soil and groundwater samples for analysis. The samples will be analyzed for diesel fuel, motor oil, CAM 17 metals,volatile organic compounds and semi-volatile organic compounds. SCOPE OF WORK Drilling Permit and Workplan Submittal Kleinfelder proposes to advance exploratory Hydropunch soil borings in the vicinity of the two former septic tanks and associated leach fields. Kleinfelder will collect soil samples and Hydropunch IITM water samples from the borings. The San Joaquin County Public Health Services Department Environmental Health Division (PHS/EHD) requires a workplan and boring permit application for exploratory soil borings drilled for site assessment purposes. The proposed soil/Hydropunch [I' borings will require boring permits. Kleinfelder will also prepare a health and safety plan for use in the field. The health and safety plan will be included as part of the workplan. Drilling of Borings and Soil Sample Collection A total of 4 Hydropunch IITm soil borings will be drilled in the vicinity of the septic systems (refer to Plate 2 and Plate 3). Septic System t�`Bgri�tg�. SeptLc T`a�tk Leaeh#"Lettl Former Heater House 1 1 Adjacent to Waste Water Sump 1 I Prior to advancing the borings, Kleinfelder will attempt to confirm the septic tank and leachfield locations. It is anticipated that the septic tanks are buried at a depth of one to two feet below grade. Kleinfelder will use a metal probe and/or magnetic locator and existing site plans to locate the septic tanks. Kleinfelder will attempt to locate the leach fields by exposing the ends of each septic tank to find the connection between the tank and the leach field piping. The ends of the septic tanks will be exposed by excavating soil with a shovel. The anticipated leach field locations are shown on Plates 2 and 3. 20-3978-01.W221207PIL048 Page 2 of 01997, Kleinfelder,Inc.