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Andrew Dorn, Staff Geolog,is <br />Gregory P. Stahl, PG 5023 <br />CA Certified Hydrogeologist No. 264 <br />Mr. Alan Buehler <br />Page 3 of 3 <br />Laboratory Analysis <br />The soil samples will be submitted by Ground Zero to BC Laboratories of Bakersfield, CA for <br />analysis of TPHg by EPA Method 8015 and for B [EX compounds, gasoline oxygenates/additives <br />(MTBE, TBA, DTPE, ETBE, TAME, 1,2-DCA , EDB) and naphthalene by EPA Method 8260. <br />The soil vapor samples will be submitted by Ground Zero to BC Labs for analysis of VOCs <br />including but not limited to: TPHg, BTEX compounds, gasoline oxygenates/additives (MTBE, <br />TBA, DIPE, ETBE, TAME, 1,2-DCA , EDB), naphthalene and DFA by EPA Method TO-15 <br />along with oxygen by ASTM D1946. <br />Reporting <br />A technical report will be prepared and submitted to your office and posted to GeoTracker after <br />receipt of the analytical results. The report will evaluate the soil and soil vapor results in accordance <br />with the standards presented in the SWRCB Low Threat Underground Storage Tank Case Closure <br />Policy. <br />If you have any questions or comments please contact Ground Zero at your convenience. <br />Respectfully, <br />Ground Zero Analysis, Inc. <br />Figure 1: <br />Figure 2: <br />Attachment A: <br />Attachment B: <br />Attachment C: <br />Vicinity Map <br />Detailed Site Map <br />Quality Assurance/Quality Control Plan <br />Health & Safety Plan <br />California Environmental Protection Agency's Advisory Active Soil Gas <br />Investigations <br />cc: Mr. George Betker <br />Final Soil Sampling WP 2017 Addendum doc