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SITE-SPECIFIC HEALTH AND SAFETY PLAN FOR PHASE II ENVIRONMENTAL SITE ASSESSMENT <br /> Site Background and Chemical Hazards <br /> July 7, 2023 <br /> obstruction encountered at 65 feet bsg.Therefore, well MW-5 was destroyed under SJCEHD permit <br /> and replaced with well MW-5R. No soil samples were collected during installation of MW-5R. Results <br /> of the March 2006 investigation were reported in Monitoring Well Installation Report, dated 02 May <br /> 2006, prepared by AGE. <br /> • 06 &29 February 2008 - Cone penetration testing (CPT) borings P-16 and P-17 were advanced at <br /> the site to depths of 68 feet bsg; CPT boring P-18 was advanced off-site to 70 feet bsg; three on- <br /> site soil gas borings (P-13, P-14 and P-15) were advanced at the site to five feet bsg. A report of <br /> findings was submitted to the SJCEHD on 01 August 2008 and reported that no constituents of <br /> concern were detected from the above soil gas samples collected at P-13, P-14 and P-15. However, <br /> residual ethylbenzene and xylenes were detected from grab water samples collected from CPT <br /> borings P-16 and P-17 at concentrations as high as 2.9 pg/I and 46 pg/I, respectively. Based on the <br /> February 2008 findings,AGE concluded that 1,2-DCA was fully assessed both laterally and vertically <br /> for this site. Analytical results of grab water samples and soil vapor samples are summarized in <br /> Tables 6 and 7. Results of the February 2008 investigation were reported in Cone Penetration <br /> Testing &Vapor Intrusion Report, dated 11 August 2008, prepared by AGE. <br /> Stantec <br /> 3.4 <br />