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A K <br /> 1 <br /> May 10, 1987 AGS 86103-2 <br /> Cardlock Station #27 - Stockton, California <br /> hydrocarbon product within the tank cavity in the past, as <br /> evident from the product odors noted during augering of borings <br /> 4� <br /> B-4 and B-5 and from the results of chemical analyses of soil <br /> = samples. The distribution of contaminated soil below the level <br /> of the soil samples is not fully constrained by the presently <br /> <i <br /> available data. However, significant soil contamination is <br /> apparently limited to the tank backfill and the native soil <br /> immediately below the tank cavity. <br /> rr <br /> The Central Valley Region of the California Regional Water <br /> t, Quality Control Board uses laboratory method detection limits as <br /> goals for ground water quality. Since hydrocarbons were detected <br /> =xr <br /> in samples collected from the monitoring wells and at the base of <br /> y_ the tank cavity, additional work may be necessary in order to <br /> satisfy state and local regulations. <br /> rA <br /> L <br /> i <br /> 3 <br /> a + <br /> aT� <br /> F <br /> �iy r • ' , <br /> • • BQ011004 <br /> ..4Dn11en' �;PnSv_sfRnsa <br />