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ameO <br /> Memo <br /> September 9, 2011 <br /> Page 2 of 2 <br /> • On the comer of Spur Line and Third Street beside 205 Third Street(South-8) <br /> • On the shoulder in front of 209 Third Street(South-9) <br /> • On the shoulder in front of 343 Evans Street(South-10) <br /> Boring locations are shown on the figure attached. All 20 boring locations(East-1, East-2, <br /> East-3, East-4, South-1, South-2, South-3, South-4, South-5, South-6, South-7, South-8, <br /> South-9, South-10 and Contingent locations)will be sampled for soil to a depth of 25 feet below <br /> ground surface (bgs) and groundwater to a depth of about 20 feet bgs using a Geoprobe direct <br /> push rig and a hydropunch-style method operated by PeneCore Drilling. <br /> The borings located on soil will be destroyed by using Portland Type 1/11 neat cement grout, <br /> placed from total depth to 3 feet bgs using a tremie pipe. The top 3 feet will be filled with <br /> hydrated bentonite granules to ground surface. Borings located on City of Tracy streets will be <br /> destroyed by using Portland Type 1/II neat cement grout, placed from total depth to ground <br /> surface using a tremie pipe. The top of the grout column will be colored to match street surface <br /> conditions and will be equal with street surface grade. All soil cuttings and wash/purge water will <br /> be properly stored on site in 55-gallon drums to be removed by Chevron. This work will be <br /> conducted under an encroachment permit with the City of Tracy. Traffic control including <br /> signage will be set up for all work in City Streets. <br /> Please contact me at(510) 663-4133 with any questions. <br /> Sincerely yours, <br /> AMEC Geomatrix, Inc. <br /> 2W"--A- <br /> Heidi Dietrich <br /> Staff Scientist <br /> Direct Tel.: 510-663-4133 <br /> Direct Fax: 510-663-4141 <br /> E-mail: heidi.dietrich@amec.com <br /> hd/bfw <br /> XA16000s\161130\4000\SJC BorePennits 090911\01 Memosoil bore infuma.doc <br /> Enclosures: Proposed Sample Locations Figure 1 <br /> Work Plan for Investigation Tracy Railyard- Off Site East Area <br /> Tracy Railyard-Off Site East Area Approval Letter <br /> Work Plan for Investigation Tracy Railyard- Off Site South Area <br /> Tracy Railyard- Off Site South Area Approval Letter <br /> Master File Record "MFR" <br /> Well & Boring Permit Application (UPRR) <br /> Well & Boring Permit Application (City of Tracy) <br /> Licensed Contractors Declaration "LCD" <br />