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r� <br /> .ti <br /> Additional soil site assessment work was conducted on December 5 to 7, 1994 when <br /> Gregg In Situ, Inc completed a series of Cone Penetration Test (CPT) soil borings of the <br /> site and surrounding area The CPT investigation consisted of 14 soil borings or <br /> "hydropunch" borings (Figure 3) These borings identified subsurface lithologic <br /> conditions encountered from the surface to a maximum depth of 60 feet bgs Most of the <br /> CPT hydropunch soil borings were between 45 and 53 feet deep The CPT data indicated <br /> that the majority of the site is underlain by alternating fine grained silt and clay beds up to <br /> several feet thick alternating with sand layers up to several feet thick Unfortunately, no <br /> soil samples were submitted to analytical laboratory for analysis of VOC's <br /> Groundwater grab samples were collected from the first groundwater encountered by CPT <br /> soil borings and analyzed by Matrix Environmental Laboratories for BTEX using USEPA <br /> Test Method 602 and TPH-g using USEPA Test Method 5030 Analytical results are <br /> tabulated in Table 3 and are depicted on Figure 3 Analytical laboratory results <br /> indicated a fairly widespread extent of volatile organic compounds in the groundwater <br /> Additional groundwater monitoring events were conducted during the 3' and 0 quarter <br /> of 1994 by Dana Booth (Booth, 1994b, and 1994c) The results of the sampling are <br /> tabulated in Tables 1 and 2 <br /> An expanded site assessment workplan was submitted to PHSEHD by Dana Booth in <br /> 1995 (Booth, 1995) A groundwater monitoring event that included analysis of water <br /> from the onsite monitoring wells occurred in 1997 (Booth, 1997) <br /> In 1995 the city of Lodi began to investigate a widespread distribution of solvents and <br /> cleaning agents present in the central portion of the city This investigation has <br /> developed into an extensive groundwater investigation The extent of this survey is <br /> depicted on Figure 2 The former Parmar Texaco site is included within the investigation <br /> and along the current eastern border of the greater Lodi groundwater investigation site <br /> This investigation has lead to numerous groundwater monitoring wells and soil borings <br /> being placed within this area No direct investigative work has occurred on the former <br /> Parmar Texaco property but has occurred within several blocks of the site <br /> No other work is known to have occurred on the property <br /> • <br /> Main\UEnvironmental\ParmarTexaco\WorkplarM42003 wpd 9 <br />