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u,'I I.1 It\1t ltil a Ill Il'1,1 1 NII 1 1 I II <br /> r1ti ltV\I I. n11.11 f 711'J\ i <br /> 3 Apr 1989 <br /> Julian Munoz <br /> Safeway Stores, Inc. <br /> Meat Packing Department. <br /> 1111 Navy Drive <br /> Stockton, CA 95204 <br /> Re: Tank Excavation <br /> and Former Sampling <br /> Safeway Meat Packing Facility <br /> . Stockton, California <br /> Dear Mr. Munoz: <br /> This letter+ summarizes the results of the past subsurface investigations <br /> 1' oval of 4 underground fuel storage tanks <br /> conducted in association with the rem <br /> located a` the Safeway Meat Packing facility, 1111 Navy Drive, Stockton, <br /> y California (Figures i and 2). The tanks were removed by Precision Industries <br /> (PI} rf Stockton, California, between 6 and 10 July 1987. Weiss Associates <br /> k: (WA} ubsurface <br /> of Oakland, California, conducted betweenrlApphl s1e987°andsSeptember <br /> investigation and soil stockpile sampling <br /> i :988. The results of soil and groundwater <br /> resented��ginare <br /> Figures2 hroughb7. <br /> 1 through 4 zild sampling io ations are p <br /> The following briefly describes the work performed: WA report dates and <br /> IN <br /> recipients are underlined. <br /> 10 �u e .�47 J�II ion Mll110L. Safeway <br /> T On 7 and 8 April 1987, KA supervised the drilling of soil borings an <br /> collected soil samples around the underground storage tanks. The location <br /> of borings B-1 through B-9 are indicated in Figure 2. In the area of the <br /> P tanks the site is underlain by low permeability silts and clays with <br /> . Groundwater was encountered at about <br /> discontinuous layers of clayey sand <br /> 16 to 17:5 ft below grade. Photoionization detector (PID) readings during <br /> soil in all <br /> drilling indicated that volt 91e hTfe°highess concentration were present n of volatile <br /> borings except 8-1 and <br /> hydrocarbons was detected at 700 ppmv in the sample collected at 19.7 ft <br /> from the bottom of boring B 8. One sample from each boring except B-9 was <br /> analyzed by Brown and Caldwell L.boratories (BBC) of Emeryville, <br /> California, for total fu,�l hydrocarbons (TFH) and benzene, toluene and <br /> xylene (BTX). Analytic results are presented in Table 1. TFH at 1100 <br /> ppm were only detected in the sample collected from boring B-2 at 20.7 ft <br /> below grade. BTX were not detected in any samples. <br /> - - -- - - - - <br /> Between 6 aril i0 June-1987, -the-four-underground fuelstorage tan s were <br /> removed by PI. 41A personnel were present to observe the removal. tooter <br /> M�- <br /> �lrr <br /> tis <br />