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g5 _ <br /> i <br /> of `an Ramon, <br /> ,zed at Chra adl b Inc- <br /> F` °ural ID #�68- <br /> All soil samples were an�►11 <br /> California (State-eery ificalp°was23analyzed foY Total , Total <br /> TpHwi (EPA Method 5030/ ) , Total <br /> Each soil same <br /> 0140157) . gasoline { TPHd) (EPA Method 3550/8015) , <br /> Hydrocarbons as 9cq BTEX) (EPA <br /> Petroleum Hydrocarbons lbenzene,l and Total Xylenes ( E&f <br /> Benzene, Toluene, EthY Standard Method 550 ) ' <br /> Total oil and Grease ( and Cadmium (EPA Method <br /> Method 8020) + EPA Method 8010) , 7420 Nickel <br /> Purgeable Halocarbons ( Lead (EPA Method )+ <br /> 7130) , Chromium (EPA <br /> PndeZina (EPA)Method 7950) . <br /> (EPA Method 7590) , for the <br /> samples were collected and analyzedthe <br /> A total of 14 soil P le identification e depth ncludes of which the <br /> above parameters. The lamp MW1--5' <br /> boring in which the sample was collected and the <br /> bo g The 14 samples were identified ragrom soil <br /> sample was collected. MW-l7 MW2-5� and 3• SBI-5` and <br /> and MW1-9` from soil boring from soil boring MW <br /> boring <br /> boring MW-21 MW3-5` and MW3-g SB2-5' and SB2-9' <br /> SB-li gB-3i and 534-5' and SB4- <br /> SB1-9' from soil boring€ B soil boring <br /> SB-2i SB3_5Y and S83-9' <br /> 9, from soil boring SB-4• <br /> Installation <br /> Monitorin Well Insta 2 and MW-3 were converted <br /> S< borings MW-1, MW- well was <br /> On June 24, 1991, yells, Each monitoring inert <br /> into groundwater monitoring <br /> rade. Clean, <br /> to a depth of 2VCfe1te was Sur used to Construct the wells. <br /> completed Schedule 40 P P P was <br /> in, <br /> from ten <br /> 2-inch OD, 0,020 continuous slot piping <br /> ' Ten feet of Ten feet of blank PVC pipe <br /> rade and ten feet below sursandwas <br /> feet to 20 <br /> 0lled between Sur lace, (#3 Monterey <br /> was inst was seated in P using the <br /> grade. After the annular space around the well cos o sibiligtY of <br /> tremied into the <br /> was laced from the bottom of the hole (20 <br /> hollow-stem of the augers 11 order to reduce the of the screened <br /> bridging. The sand of two feet above the top <br /> let <br /> feet) to a height o€ auger was removed from the bare hate, <br /> 8 feet) . After the aug � the annular space, <br /> interval ( pellets <br /> were then poured in o <br /> bentonite p pack, forming a three foot high <br /> dry of the sand p o the annulus of <br /> directly on top which had bean <br /> displaced <br /> to hydrate <br /> seal. Formation water, pack was emplaced, <br /> After the bentonite plug had been allowed <br /> the bore holes as the sand P of neat cement was then <br /> the bentonite pellets. seal six inches <br /> to adequately expand, an annular th of approximately then <br /> casing box was <br /> An at-grade steel approximately two <br /> poured above the gradebent. An <br /> to a ep ad with <br /> below surface gthe well, and a cement pad <br /> well box was formed. <br /> installed above <br /> away from the center of the well head and a <br /> inches of slope lcE cap was then installed on <br /> - - A water was placed on the well box. - - <br /> tamper-resistant cover <br /> PAGE 10 <br /> 275 GRANT ;,INE ROAD <br />