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�z <br /> Chevron U.S.A. -- Page 5 <br /> utilized to help to describe any noted contamination persistence in a vertical <br /> relationship to ground water. <br /> Each exploratory soil boring was completed as a ground water monitoring <br /> well .which allowed sampling of the ground water. The monitoring wells were also <br /> utilized to evaluate physical ground water conditions including ground water <br /> depths, gradient, direction of flow, ground water quality, and possible future <br /> monitoring. Please refer to the site plan included as Plate 2 for monitoring <br /> well locations. <br /> In order to accomplish the goals established for the proposed investigation, <br /> the work was separated into four distinct tasks as follows: <br /> I. Literature survey and research of readily available data regarding site <br /> history and use, geologic and hydrogeologic conditions, and previous <br /> site investigations; <br /> II. Field investigation to advance exploratory soil borings for the purpose <br /> of logging subsurface conditions and obtaining subsoils samples for <br /> chemical analysis. Three ground water monitoring wells were then <br /> completed in -the soil borings advanced at the subject property. The <br /> t monitoring well locations were located in areas suggested by the San <br /> Joaquin Local Health District. Dames & Moore elected to utilize the <br /> subsoil samples obtained from the soil borings advanced to install <br /> monitoring wells for chemical analysis . <br /> III. Laboratory analysis of subsoil and ground water samples obtained from <br /> the field investigation to evaluate the presence and concentration of <br /> petroleum constituents contamination; <br /> IV. Prepare a written report which details the findings of our <br /> investigation. <br /> DAMES & MOORE <br />