2024-04-08_PERMIT FILE - M2024015

• Permit No: M2024015
• IBM Index Class Name: Permit File
• Doc Date: 4/8/2024
• Doc Name: Application
• From: J & T Consulting, Inc
• To: DRMS
• Email Name: BFB
• Email Name: EL1
• Media Type: D
• Archive: No

SVRC Pit Evaluation
Table of Contents — Continued
APPENDIX A TABLES 19
Table Al-SEO Well Data Used for Hydrologic Analysis(4 pages) 20-23
Table A2-SVRC Monitoring Well Water Levels 24
Table A3-Section 20 Monitoring Well Water Levels(From J&T Consulting) 24
Table A4-Modflow"River"Cell Parameters 14
Table A5-Pre-pit Run Calibration Satistics 14
Table A6-Pre-Pit Run Mass Balancc 15
Table A7-Pit Scenario 1 Impacts-Only SVRC without Mitigation 16
Table A8-Pit Scenario 1 Impacts-Only SVRC(with Flow to Pipeline) 16
APPENDIX A FIGURES 25
Figure Ala-Study Area with DWR Wells(NE) 26
Figure Alb-Study Area with DWR Wells(SE) 27
Figure Alc-Study Area with DWR Wells(SW) 28
Figure Ald-Study Area with DWR Wells(NW) 29
Figure A2-Surficial Geology and Well Depth 30
Figure A3-Bedrock Elevation Contours 31
Figure A4a-Year 2000 Water Table 32
Figure A4b-Recent Water Table 33
Figure A5a-Depth to Water(NE) 34
Figure A5b-Depth to Water(SE) 35
Figure A5c-Depth to Water(SW) 36
Figure A5d-Depth to Water(NW) 37
Figure A6-Aquifer Saturated Thickness 38
Figure A7-Well Yield 39
Figure A8-Transmissivity 40
Figure A9-Hydraulic Conductivity 41
Figure A10-PrePit Water Table and Calibration Residuals 42
Figure All-Scenario 1-Change Caused by SVRC Pits 43
Figure Al2-Scenario 1-SVRC Mitigation to CCWCD 44
Pipeline Figure Al3-Scenario 1-SVRC Mitigation to Drain 45
APPENDIX B-GROUNDWATER EVALUATION AND MODELING 45
BACKGROUND 46
MITIGATION RUNS 46
Pit Scenario 2-Only Section 20 Pits 46
Pit Scenario 3-Only Monarch Pits 47
Pit Scenario 4-Section 20 and Monarch Pits 47
Pit Scenario 5-All Pits(Section 20,Monarch and SVRC) 47
APPENDIX B TABLES
Table B-1-Pit Run Results Summar 48
APPENDIX B FIGURES 49
Figure Bl-Scenario 2-Change Caused by Section 20 Pits 50
Figure B2-Scenario 2-Section 20 Mitigation to Drain 51
Figure B3-Scenario 3-Change Caused by Monarch Pits 52
Figure B4-Scenario 3-Monarch Mitigation to Drains 53
Figure B5-Scenario 4-Change Caused by Section 20 and Monarch Pits 54
Figure B6-Scenario 4-Section 20 and Monarch Pits Mitigation to Drains 55
Figure B7-Scenario 5-Change Caused by All Pits(Section 20 and Monarch and SVRC) 56
Figure B8-Scenario 5-All Pits with Mitigation to Drains 57
Figure B9-Scenario 5-All Pits with Mitigation to Drains(SVRC to Pipeline) 58
McGrane Water Engineering,LLC. Page iii