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4 = <br /> City o L&hrop <br /> Phase 11 Remedhd Work Plan - Fuller Propeny, 245 E. Louise, Lathrop <br /> Page 2 <br /> t <br /> 4.0 OBJECTIVE <br /> The objective of this Phase. It Work Plan is to attempt to determine the laterg aa)d <br /> vertical extent of soil. contamination and to determine if groundwater has been impacted <br /> by the release of hydrocarbons and solvents to the soil. q <br /> S.0 SITE WORK PLAN <br /> Thi—Sin�vesti-g—ation_ihc1u_&s.the.drill ing.of-ap -'fdr-- <br /> prpxlmately eight (8) soil borings soil <br /> rsampli-n­g'-afi&also--taking-water-samples. -from lbese boringsusiing­a' hydiopunch-type',�' <br /> (­appairatus.. <br /> The location. of the borings will be in the area arourd the building where the spills were'i <br /> believed to have occurred (Figure 2). Gr6undwater, at this site, is -"t 2pproxim0ateiv 1 1 i <br /> to 13 feet. <br /> 5.1 Drilling <br /> Permits will be-obtained, as nec-essary... for the borings before drilling bcgins.,; <br /> The soil borings will -be acco -ic, rig <br /> mplishcd using a mobile mounted drill1ii <br /> employing the use of a hollow stem flight auger no less thfin 3 1/4-inch i.d. andl� <br /> 8 7/8 o.d. <br /> The borings will. be logged under the direct supervision of a registered geologist::! <br /> using the Unified Soil Classification System (Figure 3). The color, texture,-il, <br /> moisture, plasticity (if applicable), consistency of the earth materials, pertinent <br /> soil or bedrock characteristics, and any evidence of contamination will be noted. � <br /> All water-bearing zones and the depths;at which-they are encountered will be:L. <br /> noted on these logs. <br /> N <br /> All borings will be drilled in such a inmuier :is to prevent cross contai.offlation ', <br /> I <br /> between. strata. Hydropunci sa%plcs will be taken at the soil/groun-divatcr inter-:' <br /> face, and the borings will then be terminated with i; cement and-t_1!rec�v­erce_nV'i <br /> ,(3%)-bentoniteYffia''turld'. <br /> 5.2 Soil Sampling <br /> Relatively undisturbed soil samples will be taken at intervals of not more than-'! <br /> five feet (5') in order to evaluate the subsurface materials. <br />