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TABLE7 Third Quarter 2018 Groundnvter Monitoring Plan Rough and Ready Island Stockton,California Sam ling Well Construction Shoran VOCS EPA Well Material and Interval lit Water Level Method Metals EPA Mercury EPA General Identification Area Site Identification Diameter has)) No TOC' ERS 2007 Toe' Latitude' Longitude' Weil Stales' Measurement 8260B TPH' Method 6020 Methad➢470A Chemist ' Rationale EW-005 She Sit.3 4"PVC 07 -113 N/A 37.94456809SC 121.3607632950 DAMAGED Wall was damanaged P-152 She Site 11. PVC IS to 12.5 -1.39 N/A 37.9452568670 121.3611423070 DESTROYED Plezomeler Was destroyed P-155 She Sit.3 1" PVC 3.150 -0.6 N/A 37,9448400400 121.3614756310 X Piemmeter for water leve6 P-15) Site Sit.3 1" PVC 2.5 to 125 -0.21 N/A 37.9445178])0 -1213614286400 X Piemmeter for water levels W-002 Site SRe3 2"SS 28 to 38 -0.46 N/A 37.9448236590 -121.36081])640 X X VOCs defected above MET in most.....tsample *D25 Site Sit.3 4" PVC 12.5 to 20 -4.44 N/A 37.9448591120 -121,3616961760 DAMAGED Well was damanaged *D52 Site Sit.3 2" PVC 12 to 21 -2.27 N/A 37.9448298630 -121.3607466030 % % VOC,detected above MCI,in most event sample W 074 Site Sile3 2" PVC 13 to 23 -L] N/A 37.9447102490 121,3609552370 X % VOC,detected be.MCI,In roof Intend sample W-0I5 Site Sit.3 2- PVC 13 to 23 -1.65 N/A 37.9447441240 121.3611507310 % % Define lateral extent of VOC, W-0]6 Sile3 SRe3 2" PVC 13 do 23 -254 N/A 3].9450401800 -121.3609980160 % % % VOCs detected above MCC,In most recent Anchor,CompaiRce surface wader and graundwatn,geochemistry W-0T) Sit.3 Sit.3 2" PVC 11 to 21 -1.96 N/A 37.9447511320 121.360930326D X % VOCs delegedabove MCLs in most recentsample W-090 Site Site 2" PVC 16 to ZI 2J2 N/A 3].945433370D -121,3617007030 % % Define lateral extent of VOCS W-091 SRe3 Sit.3 2" PVC 16.5 to 21 -1,16 N/A 37.5454924950 -1213611135900 DAMAGED Well was disinterested W-092 Site SRe3 2" PVC 15.5 to 20 -3.3] N/A 37.9452351210 -121,3621059280 X Define lateral extent of VOCs W-093 SRe3 SRe3 2" PVC 15.5 to 20 -2.11 N/A 37.94SIO33770 121.3613678530 DAMAGED Well was damanaged W-094 Site Sit.3 2" PVC 18.5 to 23 -2.15 N/A 37.9449632660 -121.3617510720 DAMAGED Wall van damanaged W-095 Site Sit. "e3 2PVC IS to 20 -25] N/A 3).94510)4430 121.3604742910 X % Define lateral agent of VOCs W-096 Sit.3 511.3 2" PVC 16 to 21 $85 N/A 37.9446213720 121.3615287500 DAMAGED Well was damanaged W-097 SRe3 Site 2" PVC 14.5 to 19.5 -2.86 N/A 37.9444352380 121.3609087260 DAMAGED Well was damanaged W-098 SRe3 Sit.3 2" PVC 34.5 to 39 -2.9 N/A 37.9453202120 121.3619918130 DAMAGED Well was damanaged W 099 Sir.3 site 2PVC 335 to 43 -2.66 N/A 37.9444382100 -121.36D881606D X X Define lateral extent of " W-Too Site Sit.3 l" PVC 30 to 40 -3.48 N/A 370454101690 -121.361020]]4D X % Oefne lateral extent of VOCs W-101 Sit.3 Site 2" PVC 32.5 to 37.5 -2.42 N/A 3].9451510)00 -121,361399 24 3 0 X X VOCs selected above MCI,in most.error sample W-102 SRe3 Site 2" PVC 3054o 4D.5 -2.03 N/A 37,9447563250 -121.3612918580 DAMAGED Well was damanaged W-103 Sile3 Site 2" PVC 33.5 fo 38.5 -2.04 N/A 37.944BO29320 1213609674800 % % VOCs de e<ted above MCLs in most recentsample W 209 SRe3 Site 2" PVC 49 to 54 Tsai N/A 37,9446004320 -121.3610406610 % % Define lateral extent ofVOC1 W-210 Site do 2" PVC 351o4D -3.84 N/A 37.9443183570 -121.3606178600 % X Define lateral extent of VOC, ed W 211 SRe3 Site 2" PVC 40 to 45 -4.04 N/A 3),9448616)00 -121.3616692940 DAMAGED Well ed above MCI,inIs gm W 212 Site Site 2" PVC 421.47 -2.7 N/A 37,9450217740 -121.3610336610 X X VOCsdelec Placimatr was lnmostrecent sample P-153 Site Site l' PVC 2.5 to 12.2 -0.34 N/A 37.9450764440 121.3514910020 DESTROYED Plezomeler was denoryetl P-169 Sit.4 SBa4 1" PVC 3.2 to 13.2 7.03 N/A 37.9519595110 121.3465695250 X Pleeomeler for water levels P-1]0 Site She 1" PVC 4to 14 5.39 N/A 37.9519528660 121.3484490740 X Piemmeter for water levels P-1)3 Site Sife4 I" PVC 3.4 to 13.4 . 5.63 N/A 37.9517128320 121.3404304400 % Plezometerfn,water levels P-177 Site She 1" PVC 6.5 to 11.5 4AS N/A 37.9516742090 121.3485540610 % - Plezomeler for water levels Pfamm vels P-17e Sit.4 Site 1" PVC 40.5 to 45.5 .4J2 N/A 37.9516562390 -121,3485514620 X Define veticer extent ofr water VOC W-004 Site SIte4 2" 55 49 to 59 5.11 4.717 37.9516346352 -121.3484271120 % X Dedid,...MCI, of W-D10 Sit.4 SRe4 4" PVC 10 to 15 4.41 4.108 3],951)198192 -121.3485597530 X X YOCs elected above MCls In most recent sample W-D53 Site SIle4 21- PVC 7.5 to 10.5 3.55 3.248 37.9515682093 -1213404200490 X X X VOCs detected above MCL,In most ¢cenl sample,Comparison surface to, ad Recalwatergearbam9try W 078 Site SRe4 2" PVC 12 to 17 3.41 3.025 37.9516981673 -121.3483039670 X Removed from monitoring program In 2008 be cause duplicative of W-104 W-079 Sit.4 Shia 2" PVC 12 to 17 3.% 3.569 1 37.951726198 -121.3483288050 X Removed from coo itoring program In 2008 because doolcative of W-104 W-080 Site Site 2" PVC 12 to 17 3.72 1 3.311 37.9516288096 -121.3483340710 X % VIC,d [ected ahoy.hill in most recent sample W DOI Sit.4 Site 2" PVC 12 to 17 3.36 1 2.931 37.951543310Z -121.3483002100 % % VOCi detected above MCLs in most recants ample W-104 Site Site 2. PVC 10 to 15 3.9 3.589 37,9517376762 -121.3493124710 X % VOCs detected above MCI,in most recentsample W-ITS Site Site4 2" PVC 18 to 23 2.96 2.611 37,9518897500 -121.3482199869 % % Vans detected above MCLs In most recent sample W-SO6 Site Site 2" PVC 19 to 29 3.35 3.064 37,9514259900 -121,3481869670 % X Vocs detected above MCI,in ancro renl sample W-ID] Site Site 2" PVC 19 to 24 3.43 3.136 37,9510444852 -121.3482595100 % X Deana lateral extent ofvoC. W-108 Site Site 2" PVC 19 to 24 4.28 3.924 3].9513128199 -121.3487541320 % X VOCsdedectedabe,.MCLs in most recentsample W-I09 Site Site 2" PVC 19 to 24 0.68 0396 3).95106564]6 -121.3492101560 % X VOCs detected be.MCC,in most recent sample W-Sla life Site 2" PVC 15 to 25 3.6 3.297 37,9506382710 -121.3487224680 X % Define lateral extent of Vai W-III Site Site 2" PVC 39.5 to 49S 3.15 N/A 3).9517448700 -121.34 80914 64 0 X % VOCs detected above MCC,in most.event sample W-112 Site Site 2" PVC 39 to 49 3.99 3.622 37.9512579906 -171.3487340510 X % VOC,detected above MCI,in most....at sample W-113 Sit.4 Site 2" PVC 34.5 to 49S 3.76 3.512 37.9508402548 -121,3 4 87304 210 % X VOCs detected above MCLs In no-t eeant sample W-214 Site Site 2" PVC 22.5 to 27.5 4.17 3.853 37,9512019349 -121.3484731990 R % VIC,detected above MCI,In enamored sample W-235 Site Slteq 2" PVC 2Dto 25 3.95 1 3.677 37.950840ID05 1213986588390 % X VOCsdetected above Si In most recent sample W-216 Site Site 2" PVC 12 t.22 2.95 2.639 37.9504737454 -121.3489222040 % ax Define lalerai extent o(YDCs W-217 Sit.4 Site 2" PVC 4D to 55 4.1 3801 37.9512160105 -121.3484731720 X VOCsighmeted above MCC,in most recent sample W-218 Site Site Z" PVC 4D to 45 3.08 2.833 37.9504727420 -121.3488900230 X Define lateral extent of VOCs W-Z19 Sit. Site T. PVC 9Dto q5 4.4 4,102 37.9520269094 -121.3404631980 % Define lateral extent ofVOCs W-231 511.4 Site 2" PVC 2DIo 25 4.47 4205 37.9520659654 -121.3484592500 X Define lateral extent ofVOCs Nines. 1.Elevation surveyed to NGVD 1929 datum 2.Cathode and longitude surveyed to NAD 1983 datum. T Well status from 2015.07.15 DRAFT Ground Water Monitoring and Reporting Plan RRI 4.TPH gasoline by 82608 and TPH diesel and motor oil by 8015B 5.General chemistry=midmor,magnesium,sodium and potassium by EPA method 6010B,chloride and sulfate by EPA method 300.0,and alkalinity by SM 2320B bgs=below ground surface MSL=mcan sea level TPH=total padmluem hydrocarbons MCI=maximum contaminant level EST envlromenlal screening level VOC=voNIT.organic compounds N/A=not available 6