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GROUND ZERO <br /> ANALYSIS, INC. <br /> 1172 Kansas Avenue,Suite A <br /> Modesto,CA 95351 <br /> 209.522.4119-PH <br /> 209.522.4227-FAX <br /> groundzeroanalysis.com <br /> August 30, 2013 <br /> Mr. Johnny Yoakum <br /> San Joaquin County Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, CA 95205-6232 <br /> Subject: Workplan for Soil and Groundwater Sampling <br /> Wright's Petroleum, Inc., 1512 Weiss Way, Escalon, CA (Figure 1) <br /> Dear Mr. Yoakum: <br /> We are writing to present you with a brief workplan to collect soil and groundwater samples at the <br /> subject facility. <br /> We propose to collect soil and groundwater samples from two locations on the property(Figure 2). <br /> C-57 licensed Gregg Drilling and Testing will utilize a CPT rig to advance drill rods and sampling <br /> tools to first groundwater, which is anticipated to occur at approximately 65 feet below ground <br /> surface. <br /> Soil samples will be collected in acetate sleeves at depths of approximately 30 feet and 60 feet. At <br /> a depth of approximately 65 feet a Hydropunch sampling tool will be utilized to collect discrete <br /> groundwater samples. The groundwater samples will be decanted into the appropriate containers, <br /> uniquely labeled, and placed in a chilled container for transport to the laboratory. The samples will <br /> be transported under chain of custody protocol to State-Certified Argon Laboratories (ELAP No. <br /> 2359) where they will be analyzed for total petroleum hydrocarbons as gasoline (TPHg) and diesel <br /> (TPHd) by EPA Method 8015M; and for benzene, toluene, ethylbenzene, xylenes (BTEX), <br /> oxygenated fuel additives and lead scavengers by EPA Method 8260B. Upon completion the <br /> boreholes will be backfilled to grade with neat cement emplaced by a tremie system. No <br /> investigation-derived wastes are expected to be generated by this investigation. <br /> All field activities will be consistent with our Quality Assurance/Quality Control Plan (Attachment <br /> A)and the Site Specific Safety Plan (Attachment B). <br /> Enclosed please find a completed Master File Record Information Form, and boring permit <br /> application along with a check for the applicable fees. <br /> G:\Data\GROUNDZMVPPS\WRIGHTS ESCAIAN\WORKPLAN\Hydropu h Workplamdoc <br />