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HALEY & ALDRICH, INC. 2033 N. Main Street Suite 309 Walnut Creek, CA 94596 925.949.1012 <br />www.haleyaldrich.com <br />8 December 2021 <br />File No. 0131960-003 <br />San Joaquin County Environmental Health Department <br />Site Mitigation Program <br />Tracy Hill Phase II ESA <br />Tracy, California 95205 <br />Attention: Jeff Wong <br />Subject: Work Plan for Phase II ESA <br />Tracy Hill Phase II ESA <br />Tracy, California <br />Dear Mr. Wong: <br />On behalf of ICGC, LLC (ICGC), Haley & Aldrich, Inc. (Haley & Aldrich) is submitting to San Joaquin County <br />Environmental Health Department (SJCEHD) this Work Plan for Phase II Environmental Site Assessment <br />(ESA) for the Site shown on Figure 1. This Work Plan summarizes the proposed environmental sampling <br />locations (see Figure 2) and methodologies and is being submitted to SJCEHD as part of Site Mitigation <br />Boring Permit (permit) package to comply with their drilling permitting requirements. <br />Project Background <br />The Site is vacant land situated in the southwest side of Interstate Highway 580 (I-580) and north of the <br />Corral Hollow Road exit. ICGC owns the Site and is currently planning its development. The California <br />Environmental Quality Act (QECA) Initial Study, dated October 2020, prepared for the Tracy Hills <br />development included Mitigation Measure (MM) HAZ 4.8-2a, which requires a Phase II ESA focused on <br />soil and soil vapor sampling given the nearby crude oil pipeline that runs parallel to I-580. This pipeline is <br />assumed to be less than 10 feet deep and extends approximately 12,000 feet within the Site, spanning <br />multiple parcels as listed below: <br />•APN 251-060-080-000 <br />•APN 251-060-090-000 <br />•APN 251-060-100-000 <br />•APN 251-060-120-000