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- _ .. ,a t JiV you JJCJ RSaC-[u1l4lf!(U X1004 <br /> KnoH <br /> May 1% 3 <br /> Page 3' <br /> vy h the <br /> boring RZ Y to depths of 2Q feet bg� Dming drlIliug a�it�an ESE geoWgkt <br /> log boxings aaad util e a Phatniag ion Deur <br /> - (PID)to seen sod_ fa add'etion _ <br /> visud and olfutary indicators wM be used to assess the pry of contaminated sora, rf <br /> at.a depth of 20 feet bA soil is found to be imps based og field.screening tec k <br /> the boring.wt7l b6 aortt�ed to a.cieptir wtrere>zo apparent impact is obser or to ground <br /> �r [fie sol being(MW-4);will be dxilIed to an 4wr+oa ihWe depth of 50 feet and w <br /> be eu 'to a ground water moxftoring wa <br /> -son. v� be callec�d �drtIMw at app o ,='mate;five fob imtmvw& The soil <br /> '.' borings and soil sa3atplmg wM be conducted in accordance with PSE StandardOpexatigg <br /> : . <br /> Procedures(SOP)No.I (auacc h d). I3a*6d.an visu2t abservadow and PID readings,USE <br /> Wi'Q Select$ aj,�tW[]50iZ ISa�p�S�bOnang, Soil cuttings�j,b���oz2 Sate . . <br /> p=dMI2W=tt0q aaallrsis of samphes_ <br /> fi WM contract C&tis&Ta <br /> mPrk3s,Ltd,(C&T a statec+ertr i atislyticail laboratoiy,of <br /> Berkeley,.California; to pe fiorm analyses'.On uff samples collected from this site for Tatat <br /> Pefroleam Hydrocnibons as Diesel (rM X)) using EPA Method 5'W' 0/8615m and,fbr <br /> Benzene;Tolucne;-E:discuw� <br /> yllae ei and Total Xylenes(BTFX)n,�g EPA Method 3550/8020. <br /> In addition;bayed t 'vwi* Mr.Knollof the.G000ty, if a`+pbalt 4930 ponenls.are <br /> mdeed'fonnd in the suUwfiwe,mw !sample from each of the two sort borings near B-2X <br /> will also be analyzed for the ToxEc Cbaracterisda Leaching Potential (IXXp) for OR awl <br /> Grease (O&Ci)n$rig Method 5520EF The!TC`-P anOr-cs for'O&G.w,'li show-if asphalt <br /> Will leach.to the groom water. An amlyses wtfI be requested ona' ten-day tarm[n nd bads. <br /> based on previow,invrest'tgafiE ns At the site,ESE an ic4x tes that gratmdwa,ter will be fvo=d <br /> 35 to 40.feet below,round surfam Fo�llaw4 ca��iom of boring M GV'-4, <br /> ESE will the couversion #a a ground water moniwring well, The weH w0i be <br /> canstrucw umt Much&ametcr.sdteclule 40 polyvinyl chloride(PVC)to an <br /> depth of 50 few.. The well will have a bottom and a 2-foot 1 silt appr�e t <br /> �P from 50 feet <br /> to 48 feet, 0.02-umb.slotted PVC;cog firman approodmatcl r 48 feet to 33 feet (15 feet of <br /> scm=),and blank PVC casing from 33 feet deep to the surface. The well aimulas wm he <br /> packed with No.3 Monterey sand from-50 feet to 30 feet, hydrawd bentonite puts from <br /> 30 to 288 feet,and grout from AS feet to a trade-rated well box at the mrfaoe. FSE wffl <br /> develop the well by mechanical sutt&g and baiting prior to placing the annular seaL These <br /> proce&Tes are consistent withSDP NO. 2 for Mamltoring Well I mmiHat on and <br /> lopment(attadh d)_ The well head will have a.low cog, Well development water, f <br /> equipment demrrtarninsfion riusa6e,viii be co ntaiaed onsiw in DOT-rated 557gal10n&ms <br /> pends laboratory analysis of=a pjm_ <br /> Sample Giotmd Water and StwvW Wills <br /> Approxima#elY hams after well i tailatio>!, FSE wdi return to the site to purge and <br /> collect ground.water samples fam the foul wells. FSE will also rneaszrm- afic water'levels <br /> in ail four wells in order to estimate sine hydraulic int_ Momtodug and ground water <br /> a <br />