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Advanced <br /> GeoEnvironmental , Inc . <br /> 05 March 2012 <br /> AGE-NC Project No. 11-2049 RECEIVED <br /> Ms. Kimberly Rigg MAR 08 2012 <br /> Ripon Cardlock Property ENVIRONMENTAL HEALTH <br /> 12550 South Jack Tone Road PERMIT/SERVICES <br /> Manteca, CA 95336 <br /> Subject: Phase II Site Assessment Report <br /> RIPON CARDLOCK PROPERTY <br /> 816 Frontage Road, Ripon, California <br /> Dear Ms. Rigg: <br /> At your request, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Phase 11 Site <br /> Assessment Reportfor the property at 816 Frontage Road, Ripon, California (the property <br /> or subject property). The scope of work included advancement of seven soil borings for <br /> collection of soil and grab ground water samples. The location of the property is illustrated <br /> in Figure 1. Major features on the property and soil boring locations are illustrated in <br /> Figure 2. <br /> 1.0. INTRODUCTION/BACKGROUND <br /> The site is currently occupied by a cardlock fueling station with two underground storage <br /> tanks (USTs)and three dispenser islands. In 2002, a piping upgrade was performed at the <br /> site. Collection of samples indicated some limited impact to soil at the site. Subsequently, <br /> an investigation of the release was performed. Five soil borings were advanced at the site <br /> and samples were collected from each boring. Significant contamination was not <br /> encountered during the investigation. In 2003, the San Joaquin County Environmental <br /> Health Department provided a"no further action"(closure)letterforthe facility. Based upon <br /> the UST system at the site,AGE performed an environmental site assessment in the areas <br /> of potential concern. <br /> 2.0. SOIL PROBE BORING ADVANCEMENT <br /> On 17 February 2012, AGE advanced seven soil borings (SB1 through SB7) at the site. <br /> Borings SB1 through SB3 were advanced near each fuel dispenser to depths of <br /> approximately 10 feet below surface grade(bsg).Borings SB4 through SB7 were advanced <br /> 837 Shaw Road • Stockton. CA 95215 <br /> Telephone(209)467-1000 • Fax (209)467-1 1 18 <br />