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.,r <br /> r <br /> AEGIS ENVIRONMENTAL , INC . <br /> 1050 Melody Lane, Suite 160, Roseville, CA 95678 + 916. 782-2110 1916-969-21101 FAX 916.766-7630 <br /> February 20, 1992 <br /> rX �r '.mow y <br /> Mr Jerry Moore F E B 2 7 1992 <br /> Moore Petroleum, Inc ENVIi , MENrAL H=-ALTH <br /> 5491 "F" Street PERWWSER`dICES <br /> Banta, California 95304 <br /> Subject Quarterly Groundwater Monitoring Report <br /> Moore Petroleum, Inc (Frank's Exxon #4) <br /> 14800 West Frontage Road, Manteca, California <br /> Dear Mr Moore <br />. Aegis Environmental, Inc (Aegis), is pleased to provide Moore Petroleum, Inc , this letter <br /> report documenting the results of groundwater monitoring conducted from August <br /> through December 1991, at the subject site (Figure 1) The monitoring included collection <br /> of monthly depth-to-groundwater measurements and quarterly water samples from eight <br /> wells (MW-1 through MW-4 and MW-6 through MW-9) located on site and one well <br /> (MW-5) located off site (Figure 2) This letter report is based, in part, on information <br /> obtained by Aegis from previous consultants and is subject to modification as newly <br /> acquired information may warrant <br /> The site is occupied by an active service station and convenience store The station <br /> retails regular-leaded, regular-unleaded, and supreme-unleaded gasolines. Details of the <br /> sae's current facilities, including underground storage tanks, were reported to Moore <br /> Petroleum, Inc , by Aegis in a "Limited Subsurface Investigation Workplan," dated <br /> August 5, 1991 The project site is located on the west side of State Highway 99, on the <br /> northern outskirts of Manteca, California, in a commercial/agricultural area <br /> BACKGROUND <br /> Aegis began a program of monthly monitoring and quarterly sampling of the wells in <br /> January 1991 Work performed at the site by previous consultants included investigations <br /> by Earth Treatment Systems, Inc (ETS), Delta Environmental Consultants, Inc (Delta), <br /> wl and Nations Groundwater Associates (NGA) <br /> 90-097F RPr <br /> GEOLOGISTS - ENGINEERS • GROUNDWATER SCIENTISTS <br /> r <br />