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1.0 INTRODUCTION
<br /> On behalf of Nulrien An Solutions, Ice. (Nation), Rubel Is submittal; MIS MOMOnfrg Won Neivrdk
<br /> Repacemenl Wad Plan lax Ne facility baled at MISS SONS Highway 33In VeMOM, Canf0mia
<br /> (SAO, Figure 1). This work plan was requested by the Central Valley Regional Water Dusky
<br /> Control Board (RMCB) during MekApN 8, 20" meeling with NUMa.
<br /> 1.1 objeclive
<br /> The objectim of this plead is to replace me mons0rag wen me cons at the site due to covering
<br /> g roundvater levels In me current wells.
<br /> 1,2 Chemicals or Camera
<br /> Abe primary cheMcals of mncem (COCs) In groundwater are miners, i?dkAbmprapane
<br /> (1,2-DCP). and 12? mcAbroprOpane (1,2,3-TCP).
<br /> 2.0 SIIEDESCRIPTION
<br /> Thesaeausedfor Saks Of Wnt so anddry fedAzersendfiho nan Figure
<br /> pre-padaged
<br /> feri3zers and pestiddes. Current and formersleleelures are shown On Figure 2.
<br /> 3.0 GEOLOGYANDNYDROGEOLOGY
<br /> MONITORING WELL PERMIT TWO son beneath the site consists pNreriy Of Gay from the ground surface to approdmatey 25
<br /> APPLICATION PACKAGE feet bean the grOUnd sudam Nags). The Gay IS uMerlaln by discontinuous layers of send, St.
<br /> and Gay to at least 75 feel age. me maxknum depth explored Cross section path ombenS are
<br /> Nu ren Alt Workers, Mr. shown on Figure 3 and geoo90 cross sed'wns are Included as Figures 4 and 5.
<br /> MIN SwM Highway 33
<br /> Vemafa, CoUlan a Sys mmlorag welts are managed to between 45 and SO feel use yeh harvest 20 and 24 feet of
<br /> Ge0backer Gabel ID No. SL185612929 screen. In February 20W, depth to groundwater in the monitoring welts was eppmanaley 45
<br /> feet lags. Groundwater Newtons have decreased approximately 15 feet same 2013 and wells
<br /> June 22, 2020 MW4, NoW S, and MALT ham been tlry since A10. The water colurm height In Are wells Nat
<br /> contained wales February MO ranged gam epprodrnatey 1 toe feel.
<br /> Groundwater predom'nanlly flows to the east at an average gradient of O.W OB feel per feet (Nfl).
<br /> MontlONMg weal knefficies am sham on Figure 2 and wnslrod'dn detais are sumaran ed In
<br /> Tabs 1. HWOraalgroundxNerelewtien data are paws ell In Table 2 andgroundwalerelewton
<br /> Induced DOwments: contours from Me February 2020 event are shown on Figure 6. Graphs depkmg Me depth to
<br /> gmundwater overtime to NO welts are alluded as Appendix A.
<br /> See Magadan W6l N Boring Peed Apptr ton
<br /> Modified MOnklotiy Wel Plewment Mep 4.0 ENWRONMENTALBACKGROUND
<br /> MonitoMg Won Newwnk Replacement Work Plan
<br /> Written Appmwl from Owrsght Agency Groundwater honest me site has been monitored and sampled same IggT. Concenlalbns of
<br /> Water Fie Record Information Form the COCs In groundwater beneath me site haw hist0riwej exceeded New respetlive MCLs In
<br /> Heats and Safety Informti0n some of Me wets, kcNtlug wells that haw gone dry. The February NOR groundwater ansytml
<br /> y5"�W1 eiA6'Kww`RewmeaeeYbd�Nat ' Rmbrk
<br /> marks are shorn on Figure T and historical groundwater analytical resuls are summarized a bottom of me borehole to approdmNey 5 feet any. Sand will be m placed In me reaaltg annulus
<br /> manuring 3. Greatly mmpag COG commm"Ions owr bassare Incised es Appendix A. eo We ground surface and mrnmMNed to match Are announcing surface conducts.
<br /> 5.0 PROPOSED MONITORING WELL DESTRUCTION AND INSTALLATION 5.5 Monitoring Well Installation
<br /> no current nwnlorug wen networs A be deeb0yed and replaced with wets installed! to 65 feet Monitoring web coal Is Installed using a hdlons stem auger tlnAag rig. Dung during, Sol cores
<br /> lags. The proposed monitoring wen network are sdrvnarized bebw and shown on wall be w9eded usual a spfil-spwn sampler awry 5 feet end logged a adromanw with me
<br /> Figure 9: UnKc Th d Son Classification System e wells w be cons"bed oft-Nut diameter Schedule 40
<br /> poyvNyl choice (PVC) eying with 20 feet 00.010-Inch factory slotedscreen(con4S 1065feel
<br /> Wendes"done: MW1. MW2, MW3, MW4, MW5. M R. MWT, am MWe any. The annular space between the Nrehde wants and wen screens wan be backfiletl with
<br /> since sand filler packlo approdmately 2 feel show Met" cribs well screen. A 2-fob local
<br /> WenlnstalWWns: MWI , MW3R, MW4R, MWSR, and MMR transition seal will be Insisted aeon Me Bar pa eand Waluded in place.A neat cement sanitary
<br /> Won MWl will not be replaced Simmons COC cancentmtbns are historically belowwater quaUy seal will be Insisted ham me opaflhe tanbnke smelts lustbelow me ground surface.
<br /> Standards. All Is no lorgerinckded in Me monitoring and Sorption progrem, and the wets Waged 511 and MWBR will tat completed want a gush mount lreMomted well bon The
<br /> net needed to munumeNe graalwatertow dwedwn. AMberany, wets MWeR and MW7 win maaug wens wit be completed In an abow.grouM monument set In a concrete Pad. The
<br /> tor( be replaced becousa me pvposedwen MW2Ri war praide regesentalive data atthe same proposed measuring wan construction delets are sham on Figure 9.
<br /> creation.
<br /> 5.6 Well Development
<br /> 5.1 Pemtitang
<br /> In accordance will Contains Was Standards (Department Of Water Resources Bune(a 74), the
<br /> Won Inslaliadon and degmNon petmis wT bar obtained from me San Joaquin County welts wit W dwreloped a minimum Of 48 hours after Installation by a combination of boSng,
<br /> EmPonmental Heats Department (=EHD) prior to the Slat of fiend work. Endraclvnent surnIn. and pumgag. The total wen depth, depth to grwMmater, temperature, FH, spetir
<br /> Permasw0 also be obtained wan SJC forme replacement ofwegs MINE and MWeaorg Weny conductivity. dtssohad drygen, and oxidation redudbn potential rill be measured prior to me
<br /> Road Rudkwil notify Me SJCEHO and RWx2CB at least48 hours prior to me fieowa k start and Pmi0d'cal dung dewlepment- Development you continue until a minimum of five
<br /> casbg volumes 0f waterham been rammed andwaterquaay parameters have Stabilized.
<br /> 5.2 Heath and Safety Plan
<br /> A site-specie Heats and Safety Penn (IIASP)win be removed and signed by an bK personnel. 6.7 Well Survey
<br /> Including subcontractors, priorlOwmk NSlalon. The HASPw1 MentlypetentaibeaMt and safety The fecomm, ground surface elevation, and top of wseng elewllon will be measured by a
<br /> M1azaNsforeaGrphaseofsleworkaM Intlde nequuemenaend prom inures fa pndedion. The Calimann-ncemul Professional land Surveyor In a0codanm with the regutremenls forthe Salta
<br /> HASP will the maintained opens aNg the fled adw i ies. A "Ific management plan far wdk Water Resources Control Board Gr atmcker database.
<br /> pedomred along May Road cell Se developed and a4oded In me SJC encroachment pemuT.
<br /> 5.8 Decontamination and Waste Management
<br /> 5.3 Utllity Clearance
<br /> Down hole drtFing equipment will he dewntamaa el prior to dri0kg each wee us" hgh-
<br /> UMetgroundSerwceAled(MSA)n0bemerged a mnimumof48M1ae In advance efsuesudacs pressure Leaning equipment The dewntenumton riraale, well deveopmenl water, and sari
<br /> activities to mortify underground utilities. A private ut'uty orator well She perform a geophysical endings generated during drinag will be placed Into separate m80t bums or 559aaam drams
<br /> urma 0Meminty of each drilling location to identity potential utilities Or Other subsurface and labeled. dared. and staged an Site prbrto characterization and disposal alan appropriate OR-
<br /> obsWdbns. If far]ly personnel, data from MOO" berings, analof Me utAry demand she faaLy.
<br /> contructour we unable to wary a location 'a Mary free, a hand auger will be adwnced o
<br /> approdmelely5feet bgs pdoro Mining to manuay dearthe location. 5.9 Scheduling and Reporting
<br /> SA Monitoring Well Destruction Field! adirslosw3be NNated afterreceNigme RWOCB's authorizationtopmceed andadaalrg
<br /> well dDhg and encroachment pemds. A MOnlorug WEt Network Replacement Report wl be
<br /> The wen crosing and annular Seal will he destroyed byowNrikig to 2 fell belowthe cons"bed suamlled epprodnMt¢y 8 weeks after computing me Amid actable, M a mawnum, the report
<br /> depth using a halbw stem auger d long rig In accordance with SJCEHD requirements. no T cornin:
<br /> resulting annular space will be seautd using neat cement defmred through a trade ON from Me
<br /> Han"""". "Kea"" Rubble. 3 RaLih
<br /> MMandain;M NerlIsmawnrwitMdtw, ' M"��owK,AefNewed Mp4evredwakPa^
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