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Groundwater Quality-Sampling Color Key <br /> Sampling:Maor&Minor Anal tes(Laboratory,NS-1GW,Sbottle,includesfield parameters Please refer to appropriate figures,tables <br /> P g� 1 Y ( Y. ) <br /> (Temp,pH,Conductivity) and textforwell locationsand additional <br /> monitoring information. <br /> Sampling:Major Analytes(Laboratory,NS-2GW,3 bottle),includes field parameters(Temp,pH, <br /> Conductivity)andan annual NS-1GW sample <br /> Sampling:Major Analytes(Laboratory,NS-2GW,3 bottle)monthly,includes field parameters <br /> (Temp,pH,Conductivity)and an annual Major&MinorAnalytes(Laboratory,NS-1GW,5 bottle) <br /> sample <br /> Sampling:Field Parameters:Temp,pH,Conductivity a nd/or NS lab:Alkalinity,Chloride,& Surface Water Monitoring <br /> Conductivity Station Numbers <br /> (Sampled by USGS semi-annually: <br /> chemistry,discharge,conductance, <br /> Aquifer Color Key Notes temperature) <br /> Wells currently equipped with WL continuous <br /> Perched Historic Upper(Perched data loggers(WL CDL)are denoted with red 9306200 <br /> &A-Groove) font. NS may relocate this equipment as <br /> A-Groove necessary to better monitor mining 9306222 <br /> conditions. <br /> B-Groove Well name with bold font indicates AG or BG 9306242 <br /> Historic Lower GMW which is proximal to current miningand <br /> (B-Groove&IDS) currently has more frequent waterquality <br /> IDS monitoring. 9306255 <br /> Subsurface <br /> Groundwater Quality <br /> Potentiometric Water Subsidence <br /> Monitoring Level Monitoring Wells <br /> Well Name Aquifer Sa mple Frequency(see Monitor Frequency (SSMWs,GR/CCL Cavities Monitored <br /> verbiage)andSample (verbiage) monitoring ba sed on <br /> Type(refer to color) bicarb production) <br /> 89-3 Perched Annual Quarterly 14H-1V 14H <br /> IRI-1 Perched Annual Quarterly DS-3 12&13H <br /> I13I-5 Perched Annual Quarterly DS-10 15&16H(east) <br /> PA-1 Perched Annual Quarterly ri <br /> 5H-SSMW 15&16H(west) <br /> 89-2 A-Groove Quarterly Quarterly 7H-SSMW 17&18H(west) <br /> 90-1 A-Groove Annual Quarterly 17H-1V-SSMW(TBD)2022 <br /> 90-4 A-Groove Quarterly Quarterly <br /> AG-1 A-Groove Quarterly Quarterly Subsurface <br /> AG-2 A-Groove Annual Quarterly Subsidence Cavities Monitored <br /> Monitoring Wells <br /> IRI-4 A-Groove Annual Quarterly SSMWs month) <br /> 89-1 B-Groove Quarterly Quarterly 4A-5M 3A,4,&8 <br /> 90-3 B-Groove Quarterly Quarterly <br /> BG-1 B-Groove Monthly Monthly <br /> Surface Subsidence <br /> BG-4 B-Groove Monthly Monthly&VUL CDL <br /> Monuments(SSMs) <br /> BG-6 B-Groove Monthly Monthly&WL CDL <br /> BG-7 B-Groove Annual Annual CP Center SSM <br /> BG-10 B-Groove Quarterly Quarterly CP North SSM <br /> BG-11 B-Groove Quarterly Qua rterly&WLCDL CP East SSM <br /> IRI-6 B-Groove Annual Annual CP South SSM <br /> IRI-11 B-Groove na Annual CP West SSM <br /> IDS Annual Qua rterly&WLCDL CP6SSM <br /> IDS Annual Qua rterly&WLCDL CP7SSM <br /> IDS Annual Qua rterly&WLCDL CP8SSM <br /> IDS Annual Qua rterly&WLCDL CID IOSSM <br /> DS-8 IDS Annual Annual 10H SSM <br /> DS-9 IDS Annual Annual 11H SSM <br /> IDS Annual Qua rterly&WLCDL 12HSSM <br /> IRI-7 IDS Annual Annual 13H SSM <br /> O-GWM-A(inactive) A-Groove na na 14HSSM <br /> TH75-6A(USGS) Upper(Pr&A) na Annual 15HSSM <br /> TH75-11A(USGS) Upper(Pr&A) na Annual 16H SSM <br /> TH75-613(USGS) Lower(B&DS) na Annual 17H SSM <br /> TH75-11B(USGS) Lower(B&IDS) na Annual CP 11 SSM <br /> Water Supply Wells CP 12 SSM <br /> Monthly na CP 13 SSM <br /> WSW-2 A-Groove Quarterly na 12HASSM <br /> Annual na 17H-IRESSM(TBD) <br /> Monthly na <br /> WSW-3 A-Groove Quarterly na <br /> Annual na <br /> Monthly na <br /> WSW-4 A-Groove i <br /> terly naual na <br /> Water,Injection(Barren) na I Quarterly na <br /> Rock School Lease Wells <br /> MWU-2(RS) Perched na Annual <br /> MWA-2(RS) A-Groove na Annual <br /> MWB-2(RS) B-Groove na Annual <br /> MWD-1(RS) IDS na Annual <br /> MWD-2(RS) IDS na Annual <br /> RS-96-20-1(RS,inactive) Not open to aquifer na na <br /> see WCD <br /> Table 4. Monitoring Requirements and Schedule <br /> Daub &Associates, Inc. Page A-3 Natural Soda LLC 2022 SAP <br />