Laserfiche WebLink
A", <br /> AG.! <br /> h i­ <br /> 1�j <br /> J.,11-:i PA, <br /> �q;i�At <br /> 4�" i 1,01 <br /> q. <br /> n'. <br /> A 4 <br /> J <br /> S. r it <br /> I -I4' <br /> C to <br /> itl�Bddkg' ouiid�� rm a,ti 6.n'.',. "t.,11j. <br /> r6j cc o. <br /> P A <br /> +, .� E C <br /> -0504 <br /> t N 98 <br /> Page'F i;t r -I,. .71,i 3,,of 3 <br /> 0- 00 <br /> 0I PREVIOUS <br /> SITE ASSESSMENTS-, <br /> PKO, A' 4&e -h "T" <br /> Jul 2002, three soil be boring(B-3 B-4 �an 'B-�) -�&�nc&d baist"�n northwest 6 <br /> July d <br /> "`.'.-the:fOrmer'BUST excavation;-and:north o' f the f6rmer'dispen''seri area;,-Dikrete.-soil samples,were <br /> collected at 57l intervals','beginhing at I OTe6t bsg- to the total depth of thelwells(between 35 and <br /> 40 feetb's Irl addition, a grI� groundw�t&'sample was collected from chch,well at,totaFde th. <br /> : ' R <br /> -were ' <br /> TPH-g andtBTEX coiii0ounds notldetected-in.any of the''soiI.,4np les:collected:'MTBE was <br /> detect6d byEPA Method 8260 in thied soil-sample's at bonl6entratiol0.01 6.m '30);, <br /> nalytic�al results o soil samples are summarized <br /> 0.,008 mg/kg(B74 �0)-, ni g(B-4-30).,A re f I <br /> 'and'o <br /> in Table 2.. <br /> "TPH-g was detected' in the grab ground water .samples -from borings B-3, :B-4,-4fid ,B-5­at' <br /> r <br /> concentrations ""of 240 respectivi w <br /> pg/l., 300 .[tg/ll and 180 9'g/l,: I el]�'BTEXpompoun s were not <br /> 'detected,but MTBE and 1.2-DCA Were det ec't-'e'd''by EPA-Method-8260 in eachlof the ground lwater," <br /> samples at'maxirqum�concentrhtions of 200,[to (B-4) and-13 µg/l.(B-5)..The:inferred distribution <br /> -gf�undwat6r samples are <br /> of dissolved MTBE is depi�ted on Figuirell and'analytical results from. <br /> summarized in Table'2. <br /> -SITE HYDROGEOLOGIC.CONDITIONS <br /> Based upon ground water monitoring'well"i.nfortn'ation obtained firom ,248 West Harding Way <br /> (3 00 feet.west of the site), ground water flow direction is inferred-to be northeasterly to easterly and - <br /> t ' currently occurs ata a' depth of approximitely25-feet bsgw <br /> ithin ground,water wells..'G'round water' <br /> Is lo&dted.,,in a generally.sandy Il of soil extending from roxirnatbly 35 feet bsgA6145:fect bsg <br /> (248 West'Hdrding).'Sedinentqry units are b6li6ved to be felatiVely hon' <br /> zontal and continuous over <br /> the area. <br /> { r . � L'�Vtu I .. I � � � I I j1 1 ,� . !r iJ 1'1 � rr <br /> ''-.- ; ' <br /> Advance7d GeoEnvir' n nc.;� <br /> 0 Me.ta 1, ,1, <br /> J <br />