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Permit Application Parameters/Assumptions/Criteria Estimated Proposed Off-site Unconfined Par4 We110eptIn Grout Seal Pumping Annual DTW(est) Off-site Well gallons ConflnedT Acres Irrigated (ft) (ft) Rat,(GPM) Extraction Min/Max Weill 21SM peracft porosity (ft2/day) / ConiS Unconf.5 Acres (—ftl (DW) (ft2/day) Notes: lel (b) (c) (dl (e) (f) Ig) (h) III (0 Ik) (I) (m) (n) (.I 14.71 13.5 280 50 250 l5 25 60'W 686'N 325,851 0.25 15,350 13,600 0.0001 0.1 46 0.25 Thal,Modal Drawdown btlmata, 1-6 feet range Aquiler Dist. Pumping rate 7 days 1 month 1 year 5 years '0y" Conf 100 ft Drawdown Peak Pumping 2.41 3.05 4.15 4.65 5A6 13600 100 ft Annualized pumpingrate 0.1 0.12 0.17 0.2 0.22 Notes:Ill..31 Con/ 1200 it Drawdown Peak Pumping 0.36 0.91 1.97 2.67 3.28 (a) Acreage of the Parcel where proposed wall is located;If applicant owns contiguous parcels that acreage can be Included if no existing wells 13600 1200 ft Annualized pumping rate 0.01 0.04 0.08 0.11 0.13 (b) Proposed acres to be Irrigated by well(may be different than parcel acreage(a)) jc) Proposed well depth-value entered from permit application COMMENTS d) Pro posed grout seal depth-value entered from permit application ROI<lft`1,DOOft (e) Proposed maximum pumping rate from permit application;this value can be estimated if pump details are known No measured subsidence in this area (f) Proposed annual extraction volume(ac-ft) Existing wells`150-300'deep (g) Minimum and maximum depth to water past 8 years(see reference) Groundwater levels generally stable for decades,then dropped-20-40 feet 2015.2016 (h)&(1)locations of nearby off-site wells as applicable(aerial evaluation+applicant submitted information) GW levelsrecovered-half of the level dropped in 2019 but still remain below historic averages Q) Conversion factor-gallons per one ac-ft Gradlent generally to the east (k) Estimated average porosity from literature for aquifer storage volume Estimated Depth to CC=150 feet;Estimated thickness of CC-75' (1) Averaged confined aquifer transmissivity from GSP and source references for Theis drawdown estimates (m) Averaged unconfined aquifer transmlssivity from GSP and source references for Theis drawdown estimates Required Information to be provided by Permit Applicant;can be estimated;required for calculations (n)It(o)Unconfined and confined aquifer storage values from GSP/References for Theis model drawdown Reference/Uterature;average values;required for calculations Well specific capacity(SC);estimated from pumping rate(e)/drawdown(x);GPM/ft;can be used to estimate T —Calalated and/or assumed values for final evaluation Estimated aacfeet needed for agronomic crop demand((b)'2-4);two feet Is minimum and four feet Is maximum for most crops;ac-ft Estimated annual Pumping volume Igallosn)(q)'U);total gallons T=Transmissivily Estimated annual pumping rate(GPM);annualized over the full Irrigation season(Apr-Nov,7 Mo,210 days) S=Storage(specific yield unconfined) Saturated aquifer thickness,total well depth(c)-Ave DTW(g) SC=Specific Capacity Maximum expected drawdown at Pumping well(Theis calculator,r=1-foot);used to calu elate SC(p) Estimated aglfer volume below parcel;parcel acreage(a)'porosity x)-aquifer thickness(t);(ao-ft) Groundwater Elevatlon and Flow Olsaction Estimates Annual%of aquifer volume withdrawn I%),(q)/(v);warning at 5%,trigger at 10% SPR FALL GR ELEV Range Pumping rate in GPM for Peak irzigathm season(140-day,May-mid Sept);use to estimate pumping rate If not specified In application 55 55 2014 E 65 (Estimated pumping rate(GPM)/140-day—i—ate) 50 50 2015 E 65 90 90 2016 SE 25 85 80 2017 SE 30 85 55 2018 E 25 70 65 2019 NE 45 65 70 2020 ENE 45 DTW 10-35 BO 80 2021 NE 40 +25-65 elft Source: htt :/s ma.water.ca.ov/we is/7a id-SGMADataV[mer lwels