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April 27, 1989 <br /> Mr. Hagop Manuelian <br /> HIVEST <br /> 100 S. Ellsworth, Floor 9 <br /> San Mateo, CA 94401 <br /> Subject: Subsurface Chemical Testing for Lands in the Vicinity of Grant Line <br /> Road west of Paradise Road in Tracy, CA <br /> (Earth Metrics Proposal 7940W1) <br /> Dear Mr. Manuelian: <br /> Our work will include the following tasks: <br /> A. AREA RECONNAISSANCE <br /> - Perform on-site investigation of the subject site to evaluate (i) the <br /> potential for hazardous materials on or adjacent to the site and <br /> (ii) neighborhood conditions related to potential environmental hazard. <br /> Optimum locations for soil boring and sampling: tenatively Earth <br /> Metrics anticipates the following allocation of borings: (i) in <br /> vicinity of railroad tracks: two; (ii) in vicinity of the adjacent <br /> tomato processing use: three (including one site potentially not <br /> drilled but sampled from the pond) ; (iii) in vicinity of landing strip: <br /> three; (iv) at large on site: two. <br /> - Define up to twelve locations for near surface (pesticide) soil sampling <br /> locations. <br /> B. FIELD TESTING <br /> - Selection of up to ten test boring locations. <br /> - Augering to a maximum depth of approximately 10 to 15 feet (or <br /> groundwater, whichever comes first) at each of the test locations. <br /> - Acquire twelve near surface (pesticide) soil samples. <br /> - Prepare samples for laboratory analysis. Composite samples as needed. <br /> - Conduct laboratory analysis of total gasoline hydrocarbons and BTEX <br /> (three samples) ; 624 groundwater (two samples) ; pH (two samples) ; <br /> selected heavy metals (one sample) ; and pesticides (two samples) . <br />