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ILS,Jt D <br /> AUG 1 G ZG09 <br /> ARCADIS E��� � '�Vlftswh <br /> ARCADIS <br /> Infrastructure, environment, buildings 140 2nd Street <br /> Suite 200 <br /> Petaluma <br /> California 94952 <br /> Mr. Mike Infurna Tel 707.776.0865 <br /> San Joaquin County Environmental Health Department Fax 707.776.0850 <br /> 600 East Main Street www.arcadis-us.com <br /> Stockton, California 95202-3029 <br /> SR? o581L$ <br /> Subject: ENVIRONMENT <br /> Applications to Drill <br /> Former Tracy Maintenance Facility, Union Pacific Railroad Company, <br /> 720 East 6th Street, Tracy, San Joaquin County, California <br /> Dear Mr. Infurna: Date: <br /> 17 August 2009 <br /> This letter transmits two applications for drilling permits (Attachment 1)for a second <br /> phase of investigation that ARCADIS is conducting at Union Pacific Railroad's Contact: <br /> (UPRR's) Former Maintenance Yard at East 6th Street and MacArthur Boulevard. The Melissa Straten <br /> proposed investigation is described in Attachment 2, the Phase 11 Field Investigation <br /> Phone: <br /> Work Plan(Work Plan), which was conditionally approved by the Central Valley 510-596-9619 <br /> Regional Water Quality Control Board (RWQCB) in their letter dated February 19, <br /> 2009 (Attachment 3). Email: <br /> Mel issa.straten@arcadis- <br /> The enclosed permit applications are for the proposed field events that are us.com <br /> summarized below and are described in the Work Plan. Separate applications are <br /> submitted for the different drillers and/or techniques that will be used. Our ref: <br /> RC000709.0601.00025 <br /> 1. Nineteen (19) CPT/LIF borings will be drilled by Fugro Consultants to <br /> approximately 30 feet below ground surface (bgs). Locations are shown <br /> on Figure 4 of the Work Plan. Depending on the data obtained from <br /> these 19 borings, four additional borings may be drilled at locations to be <br /> determined. ARCADIS proposes starting this phase of work on <br /> August 31, 2009. <br /> 2. Twenty-four(24)CPT/HydroPunchTM locations will be drilled to <br /> approximately 30 feet bgs by Gregg Drilling and Testing Inc. Locations are <br /> shown on Figure 4 of the Work Plan. Two additional locations may be drilled <br /> and sampled based on data collected from the initial 24 locations. ARCADIS <br /> proposes starting this phase of work on September 14, 2009. <br /> Gregg Drilling and Testing Inc. will also install up to five monitoring wells, as <br /> described in Section 2.3 of the Work Plan. The locations of these wells will be based <br /> Imagine the result <br />