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SRR in writ Asmtw 1.[n kOffW as AMb%,udmUn ane cin <br /> Dezember 1 1998 ` <br /> Mr Mu sol Iafu= f <br /> San Joaq=Count♦ Pubic Heahh Servh= <br /> Environmental Health Division <br /> 304 East Weber Avenue Thrid Floor <br /> Stocltlon,Cauforrlla 95202 <br /> Strblect Repair of Grmurdwarar Motutortng V ell <br /> Beacon Stauon No 419 <br /> 2350 waterloo Road,Stockton,Cairfornra. <br />' Mr lnft— <br /> Hannon Envtrdnm=W 1ne. (horizon)rs forwarding a reaper to the San 3oagtnn Counrm <br /> Puhhc Health Services-Env"nrnenW Health Drvtston (SJC PHS-1M) for the repair of <br /> groundwater awwtormg wcU MW-10 et the alcove-referenced site The boring(SB-9)for <br /> well MVe-10 was drilled and sampled to a depth of 86V-feet below m1ace glade(bsg) The <br /> locations of well MW-10 and others=fewwa are shown on the atmrhed Figure 2 <br /> After receipt of nondeme able anEdytrcal soil data`the boring was bwk&Ucd with bemowte <br /> and neat cement grout bm-weer the depths of appaacmaately 61 to Mn feet bgt A:-inch ID <br /> groundwater monitoring well (MW-10)was then completed to the depth of approxrmatch <br /> 61 feet bgs A cap% of the boring log with the we@ eons mesion details is macbed to this <br /> Jetta <br /> Upon accessing the well for well development to October 1998 cam=grata was noted at a <br /> depth of appmxrma h 48 feet inside the well csstag. F-mswl well MW-10 will be <br /> dcstroved b} V8 I Dnlhng o" <br /> Ibo Vesta, Cahftxara. b) completcn drflhng out the well <br /> casing wad%—i—maaartais to a depth of approx:meach 61 fee bpu-=S-titch OD hollow <br /> star augers thea training the basing with 10-trach OD hollow-stem augers Well M"W-10 <br /> will thea be concaved to the depth of appmxunml% 61 feet bpw7M 20 feel of 2-inch ID <br /> schedule 40 PVC well screen wcth 0 020-mrh slots bsnvem the demos of appsoxu=l% 43 <br /> to 61 feet bp and Masai,c=ng from 41 tat to the strrfa= The—ml ar space adwcent to <br /> the well screen portion of the well will be baaUlW with =.i Montem sand to <br /> approramateh two fen above the screened unterna3 A 2-foot thhcn, oemonrte seal will oe <br /> plated u the top of the sand pack to the well_and a mix of"six-sa:l`rest cement wtl, be <br /> used to complete the aatnular sea] w the surface. The well will Cher be completed with a <br /> flusb-paor-water-ugh,well boa at the surface Tae top of tk well'castrhg will be secured <br /> with a locking waterthrn expansion cap and loci,. <br /> 5011 Gokw FootPA Porkw--a SuMe 7.E1 Dorcoo H1if CA03762•COIe)M2 7:-;AX(916)439 2172 <br /> PO Sm 5283.9awgkod CA 93388 MM)58e-6389 - FAX(CM 5890456 <br /> 304 <br /> Y !! <br /> P S'Jx '-ja -'It kr'k'�: ,vt� 1:51' 1-4:x..8 <br /> droved <br /> ❑Aporoved wRh changes: See Remarks <br /> Disapproved. See Remarks <br /> Remarks <br /> At'59carew— <br /> Gate I By <br /> Approval of these plans extends enly to that <br /> which 1s shown and d:}aerlhed hereon bot <br /> do9$ !~ot e`authorl.a 'ti r a, t1,ovs ny Cir-" sroil <br /> or da%nait'n of tequirem3ris o'r Sta.a .a%s or <br /> Lac01 Oroine•1cQs. <br /> 1 d <br /> — _ 1A f]]J_-1 i.iI i M. 1 <br />