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A <br /> k.I Styll"!h` ' ,r- lir ;{ rry 1.T1 I <br /> 1050 Melody Lane, Suite 160, Rosevlfle,gcfllfo�nfa 95678 <br /> �G I OWQ37110 I"JP16,7s6 7a3a <br /> ENVIRONMENTAL, INC. <br /> July 30, 1993 <br /> Mr Kenneth Earnest <br /> Environmental Specialist <br /> Ultramar Inc <br /> 525 West Third Street <br /> Hanford, California 93232-0466 <br /> Subject Second Quarter 1993 Groundwater Monitoring Report <br /> Beacon Statson #494 <br /> 2185 Fremont Street, Stockton, California <br /> Dear Mr. Earnest <br /> Aegis Environmental, Inc. (Aegis), is pleased to provide Ultramar Inc this report <br /> documenting the results of quarterly groundwater monitoring conducted on April 15, 1993, <br /> at the subject site (Figure 1) Well MW-5 was re-sampled on May 11, 1993 at the request <br /> of Ultramar The monitoring included measurements of depths to groundwater, subjective <br /> analysis of free product, and collection of groundwater samples <br /> GROUNDWATER ELEVATIONS <br /> Prior to purging, Aegis personnel collected depth-to-water measurements on <br /> April 15, 1993 Groundwater level data from April 1992 to date, are summarized in Table <br /> 1 Previous groundwater level data are included in Attachment 3 All measurements of <br /> depths to groundwater were conducted according to the Aegis standard operating <br /> procedures (SOP) included in Attachment 1 On the basis of the April 15, 1993, <br /> measurements, groundwater is estimated to flow to the northwest (Figure 2) at an <br /> average gradient of approximately 0 04 ft/ft Groundwater levels have increased at an <br /> average of 2 4 feet compared to the February 1992 event <br /> jai <br /> 92-79W RPT <br />