LAS VEGAS AQUIFER STORAGE AND RECOVERY PROGRAM Texas

LAS VEGAS AQUIFER STORAGE AND RECOVERY PROGRAM Texas Innovative Water 2010 Seminar San Antonio Texas Tom Morris

Physiographic Setting Las Vegas Nevada

Feasibility Evaluation • • • HYDRO-GEO SETTING – Geology Limits – GW Water Quality – Production Yield OTHER CONCERNS – Water Level Declines – Planned Growth – Existing Dist System APPROACH – Basins VS Wells – Old VS New Wells – Recovery Location

Feasibility Evaluation • • • HYDRO-GEO SETTING – Geology Limits – GW Water Quality – Production Yield OTHER CONCERNS – Water Level Declines – Planned Growth – Existing Dist System APPROACH – Basins VS Wells – Old VS New Wells – Recovery Location

Feasibility Evaluation • • • HYDRO-GEO SETTING – Geology Limits – GW Water Quality – Production Yield OTHER CONCERNS – Water Level Declines – Planned Growth – Existing Dist System APPROACH – Basins VS Wells – Old VS New Wells – Recovery Location

Feasibility Evaluation • • • HYDRO-GEO SETTING – Geology Limits – GW Water Quality – Production Yield OTHER CONCERNS – Water Level Declines – Planned Growth – Existing Dist System APPROACH – Basins VS Wells – Old VS New Wells – Recovery Location

Demonstration Operations RECHARGE PREP • Flush Well • Drop Laterals • Flip Flow Meter • Prop Check Open EXISTING WELL CONVERSION • Demo with 2 Wells • Convert 33 wells to ASR • Apparent Well Clogging

Demonstration Operations • • • WELL USE TYPE – Unused Well Conversion – New Dedicated Injection – New ASR Wells ASR WELL DESIGN – Various Drill Methods – Engineered Fluid Control – Injection Development WELLHEAD EQUIPPING – Bi-Directional Flow Meter – Check Valve By-Pass – Automated On-Off Control – Motor Ratchet

Expanded Operations • • • WELL USE TYPE – Unused Well Conversion – New Dedicated Injection – New ASR Wells ASR WELL DESIGN – Various Drill Methods – Engineered Fluid Control – Injection Development WELLHEAD EQUIPPING – Bi-Directional Flow Meter – Check Valve By-Pass – Automated On-Off Control – Motor Ratchet

Expanded Operations • • • WELL USE TYPE – Unused Well Conversion – New Dedicated Injection – New ASR Wells ASR WELL DESIGN – Various Drill Methods – Engineered Fluid Control – Injection Development WELLHEAD EQUIPPING – Motor Ratchet – Bi-Directional Flow Meter – Check Valve By-Pass – Automated On-Off Control

Expanded Operations • • • WELL USE TYPE – Unused Well Conversion – New Dedicated Injection – New ASR Wells ASR WELL DESIGN – Various Drill Methods – Engineered Fluid Control – Injection Development WELLHEAD EQUIPPING – Motor Ratchet – Bi-Directional Flow Meter – Check Valve By-Pass – Automated On-Off Control Isolation Gate Valves Pump Check Valve Recharge Start/Stop Auto Valve

Managed Operations • • • HYDRO-GEO EFFICIENCY – Geology Zones – Water Level Impact – Recharge Migration WELL OPTIMIZATION – Maximize Recharge Rates – Piping Efficiency – Scheduled O & M SYSTEM RELIEF – Peak Demand Supply – Commercial P&T

Managed Operations • • • HYDRO-GEO EFFICIENCY – Geology Zones – Water Level Impact – Recharge Migration WELL OPTIMIZATION – Maximize Recharge Rates – Piping Efficiency – Scheduled O & M SYSTEM RELIEF – Peak Demand Supply – Commercial P&T

Managed Operations • • • HYDRO-GEO EFFICIENCY – Geology Zones – Water Level Impact – Recharge Migration WELL OPTIMIZATION – Maximize Recharge Rates – Piping Efficiency – Scheduled O & M SYSTEM RELIEF – Peak Demand Supply – Commercial P&T

Lessens Learned PRE-DEVELOPMENT CONDITIONS Alluvial Course Gravels 80 Years of Basin Overdraft Lowered Water Table 100 to 300 Feet Pediment Sands and Gravels Playa Lake Bed Sands and Silts

Lessens Learned HYDRO-SYSTEM CHANGES Development and Irrigation Created Un-Natural Shallow Aquifer Perched Water System Development Surface to 35 -Feet

Lessens Learned RECHARGE AQUIFER RECOVERY 16 Years of Recharge 320, 000 AF Banked Perched Water System Development Surface to 35 -Feet

Lessens Learned OTHER RECHARGE PROGRAM RELATED ISSUES • Disinfection By-Products • Water Quality Plume • Pump Wear and Sanding • Dissolved Air

Visions of Hope Questions?