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• Mark each proposed wall location with while paint and provide a minimum of 48-hour notice to the local public milidic; via Underground Service Alert prior to commencement of the well destructions as required by law. • Retain the services of Penacore Drilling (Permanent), a G57 licensed hollow-stem maker drilling connector to perform the well destruction activities. Task 2 - Field Activities Permanent will de arty three 4-inchdianm(cr monitoring Wells (M W-I through M107-3Z two 4-inch-diameter extraction walk; ( IX-1 and GWX-I), tan 2imhediamctcr monitoring Wells (MWd through MW-13), simmer 2-inchdimmfer sparks wells (AS7 Though AS22) and three 2-irnehdiamas observation Wells (VM-1 thmugh VIA-3) using a hollow-slew auger drilling rig W destroy each well pa' WCE13D guidelines. _ The;cell construction derails are included in Table 1. As "tneacd by the CNRWQCB, a summary ofthe meet rerea groundwater analyr al resulN Cr each well is included in Tables 2 and 3, and loy fs weak of the Wells W he destmix! arc allached. SideeArt brings log were gerrented for wells M" throng AS22, wt will provide copies of California Dxpmlmenl of Walr Rewurecs Well Completion Reform for these wells m the SICEI ID. The 34 walls Will be narrowed by drilling out the entim contents of wear wall(casing fi bar pack and wonder seal) using a hollow-sfsr wage drilling rig equipped With a vast plug "stinger" bit. Penecom will use B- and 10-inchdiamaer augers to drill our tiro itigutive 2- and 4ineM1diamYr polyvinyl chloride (PVC) walls. Ona wit love combined! that the auMrslmve reached the tried depth of malt met] (ranging fiam "W 120E b Pencerewill dislMge the wood plug"stings" bit from the billow of Oro augers and lwchdillthe boring with neat Portland cement grant heard), Ihey Wvill continue to backfll the hiring and remove angers Wind tine gout level stabilises at a depth ofappuxinrateiy 3 bad. They will backfill do remaining 3 fat of each boring with either gout, wind, or used caning; from the drill cuts. Pescara will than cap each boring at the surfs with appoxdw(ety 6 inches of either conerem or mil cuttings deporting an ti¢ surrounding gsaJ surf. We will destroy the borrmrfl Moment piping that connected the manediution wells to the firemer nanediation systems by filling than with grout We will and wear reuredial piping con a its wellhead and munch a90n PVC alone, with approximately 0.5E ofwrlical PVC pipe. We will dmnn pro gout into the opposite and of the prying in the firmea system transient compound, omit gout is obxrvN a the wellhead. Wewill than glue PVC slip sP%onrobah ends ofthe piping,sealing in degrees. Task 3 - Waste Disposal The caning numerical fimn the destruction of wells that have historically had late in an contaminates deemed in their soil and groundwater counties (MW4 through MW-13) will be shokpided unite pending profiling. One four-part compreim ompk will be obtained from the stockpile and analyml for tool licoutum hydrocarbons as gasoline under Trailed States Environmental Prreation Agency (EPA) lest Melted 8015M, hemenc, arduener, mhylbaneere, total xytencs, and me0ryl tert-bulyh ether under EPA 'hat Method 8260B, and total lead under 6010B. no results ofthese andyses will be povided to the EICEI ID and(handing their approval), tiro clean mil Wvrll be spread across(M1c surlha of llne S tic The cuttings ganaakd during die distraction ofWalis MW-f though MW-3, AS-] Turner AS22,mid VM- I through V will be contained in a plamic-lined, 20cubinyad birtq perdmg waste acrep wtme and disposed. The Wall casings and other mixellmeous nrlMasNws debris will either be placed in a wane tceeptaolaer moyded C•w..wyWd W. wtewbp -2 Fdnwy w,2013