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7-Eleve:;/Stockton <br /> May 1990 28 <br /> Groundwater monitoring data have documented an increase of <br /> the water table elevation by approximately 0.21 foot during this <br /> reporting period. The groundwater gradient remains in an <br /> - easterly direction, except in the areas within the capture zone <br /> of the pumping well. The gradient was approximately 0.002 ft/ft <br /> during the three month period. <br /> The results of the groundwater sampling indicate that the <br /> distribution of dissolved hydrocarbons <br /> in the groundwater beneath <br /> the site is concentrated near the former underground--tan),- and <br /> pump-island.locations. The surrounding domestic walls did not <br /> contain detectable levels of dissolved hydrocarbons during this <br /> reporting period. <br /> The remediation system operated by Groundwater Technology at <br /> the site consists of a groundwater-extraction system. <br /> Ground- <br /> water was extracted from recovery well RW-1 at a rate Of <br /> approximately 0.4 to 1.0 cpm. <br /> CLOSURE <br /> Groundwater Technology, Inc. is pleased to provide Southland <br /> .o <br /> Corporation with this P.. ect <br /> -- '" 7 Quarterly Update Report. If you <br /> have any questions or need additional information regarding this <br /> site, contact our Concord Office at (415) 671-2387. <br /> w [J GROLMAV1TER <br /> TEclisoi.ocy,Inc, <br />