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sxwxx _ 8ti - -mac Aa_ "" _ "_ _ _ •"-* . <br /> Nit <br /> pp <br /> 2.10 Distance to adJacent buildings and their water/sewer lines: <br /> i The police station is the nearest building to the product <br /> line and tank area as indicated an Figure 2. Utility <br /> latera s are plott on F;gure 2. <br /> 4h 0-Mt-�'Ut.o <br /> 3.0 PROPOSED WORKPLAN V <br /> To assess the potential contribution <br /> of the leaking product <br /> line at the police facility property to soil <br /> groundwater contamination, WaterWork and <br /> sam le four roundwater monitorfn wel�lspa to drf71 <br /> �� soil <br /> One monitoring well adjacent to <br /> shallow <br /> Point .,nd three wells to define the areal extent (twos down- <br /> gradient and one upgradient from the source) should be <br /> adequate to provide a preliminary determination of the <br /> contamination. Drilling of two soil borin s near the leak <br /> Point will define the near <br /> source shallow soil <br /> ! 3 contamination. <br /> A tJ <br /> �. The following scope of work is proposed: <br /> s t <br /> 1• Four soil borings will be drilled <br /> u below the water table to sled to a depth of 15 feet <br /> j provide for the installation of <br /> groundwater monitoring wells. The wells will be <br /> f and constructed in accordance with San Joaquin'.,ocalrHealth <br /> District. requirements. Drilling will be conducted <br /> o11oArostenbexg and Stewart under C57 license 446670, using by <br /> .hollow stem auger drill r 4 a - <br /> Presented an Figure 2 rig. The proposed well: locations, <br /> 9 , include one well adjacent to the leak <br /> . pQ�r.t, ore well u radient. of the tants <br /> and two ells "water pit/product lines, <br /> Li tank and prodiuc , _�_ gradient from the underground <br /> borings r 'x locations.rn addition, two soil <br /> g (20 foot maximum depth) will be drilled to asses3s <br /> -; the extent of soil surzace contamination near the leak <br /> (Figure 2) . The wells will be constructed of Pinch <br /> diameter F480 PVC well screen/casing and completed two inch <br /> on Figure 4. The soil borings will be abandnedbyasfillinn <br /> with cement g <br /> grout in accordance with County Reguiatio.ls. <br /> 2• Drill cuttings will be : logged <br /> ' fo <br /> characterization of contamination ndsoilotypeubvslunifier <br /> Soil Classification System, Bescr}ptiOns of salla <br /> encountered and monitoring well construction details will be <br /> 1 F`1 recorded on a borin <br /> assessment report, g/well log and included within the <br /> P Cored soil samples will 1;c collected <br /> above the water table at five foot intervals and below J - ---- -a t, select-Intervals.--for--determination of soil <br /> water table_ <br /> - - <br /> as - - tYPs Com nsJ#-o ama19 of the 5 and 10 15 and 20 foot <br /> ested, <br /> from . S 'and 10 Sail samples <br /> 2 , 15 and 20, and 25 and 30 will be composited <br /> for testing In the monitori:+e well bcarinq located ad�acen#: <br /> y � t <br /> n <br /> y, <br />