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Working To Restore Nature <br /> SUBSURFACE CONDITIONS <br /> Soil encountered beneath the project site consists predominately of interbedded silt and silty sand <br /> with varying amounts of clay to a depth of approximately 24 feet below grade, the maximum <br /> depth explored <br /> Field PID readings of zero were recorded in the four recently drilled borings (MW-4, MW-5, <br /> MW-6, and MW-7). Soil analytical data from these borings indicate no residual petroleum <br /> hydrocarbons are present in soils at those locations. <br /> Groundwater was encountered at approximately 10 to 13 feet below grade during field activities <br /> described herein Preliminary water level measurements collected on August 1, 1994, indicate <br /> groundwater flows generally southwesterly under a gradient of approximately 0 0040 ft/ft or 21 <br /> ft/mile as depicted on Plate 3 The groundwater flow and gradient will be reevaluated upon <br /> receiving survey and depth to water data from the scheduled August 22, 1994 field activities. <br /> WORK IN PROGRESS <br /> Additional field activities performed on August 22, 1994 included surveying wellhead elevations <br /> for vertical and lateral control, measuring fluid levels in groundwater monitoring wells, purging <br /> and sampling each groundwater monitoring well, and transportation of groundwater samples to <br /> Sparger 'Technology Inc. for analyses. <br /> hese activities and resultant data will be summarized in a third quarter 1994 site status report. <br /> If you have any questions or require additional information, please contact John Lane at (209), <br /> 838 3507. <br /> Respectfully, <br /> RESNA Industries Inc. <br /> �fl <br /> ohn P Lane <br /> Project Geologist c� uR`( P. <br /> No 5023 l <br /> Gregory P. Stahl fly <br /> CA Registered Geologist No. 5023 <br /> JPL/ggk <br /> 123020111-081694 WP <br />