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Home My WebLink AboutDERR-2024-007803Stakeholder Forum Meeting #2 Utah Department of Environmental Quality March 31, 2004 Jordan Valley Water Conservancy District March 31, 2004 Southwest Groundwater Remediation and Treatment Project Reverse Osmosis ByProduct Disposal Alternatives ZONE A AND ZONE B SULFATE PLUMES Reminders • Zone A – high sulfate, low pH • Zone B – moderately high sulfate • Lost Use – TDS reduction required Background Consent Decree Requirements 1) Contain the contaminated groundwater zones 2) Remediate the aquifer 3) Place water to beneficial municipal use Zone B and Lost Use Reverse Osmosis (RO) ByProduct Feed W ater Byproduct W ater (15% to 20%) Product W ater (Drinking W ater) ( 80% to 85%) Zone B, Lost Use and Phase 2 RO Byproduct Water Characteristics 3847 8,240 W eighted Average 47 8,200 876 1.95 Phase 2 1,662 3.70 Totals 47 8,200 229 0.51 Lost Use 25 8,300 557 1.24 Zone B Selenium Concentration (μg/L) TDS Concentration (mg/L) Flow Rate (gpm) Flow Rate (cfs) Zone B/Lost Use Byproduct W ater Disposal Water Quality Comparisons 250 JVWCD Drinking Water Treatment Goal N/A Aquatic Wildlife Standard 1,200/2,000 Agricultural Standard 500/1,000 Drinking Water Standard 100,000 Great Salt Lake 1,100 Jordan River 250 Provo River 8,200 Phase 2 Byproduct 8,200 Lost Use Byproduct 8,300 Zone B Byproduct 1,200 Lost Use Feed 1,600 Zone B Feed TDS (mg/L) (ppm) Water Quality Comparisons 50 JVWCD Drinking Water Treatment Goal 4.6 Aquatic Wildlife Standard N/A Agricultural Standard 50 Drinking Water Standard 0.2 Great Salt Lake 2 Jordan River 1 Provo River 47 Phase 2 Byproduct 47 Lost Use Byproduct 25 Zone B Byproduct 6 Lost Use Feed 4 Zone B Feed Selenium (µg/L) (ppb) RO Byproduct Disposal Efforts to Date by Jordan Valley • Costs and technical feasibility of disposal alternatives were evaluated • Impacts to Jordan River and its water quality were evaluated • A discharge permit to Jordan River was applied for and issued • Evaluations involved Jordan Valley, two engineering firms, and the Utah Division of Water Quality (more than 1,000 man hours of effort over two years time) RO Byproduct Disposal Alternative #1 No Action by Jordan Valley • Jordan Valley withdraws the Joint Proposal • Jordan Valley withdraws its $23 million • Jordan Valley withdraws use of its water rights • Jordan Valley withdraws use of its water transmission system RO Byproduct Disposal Alternative #2 Discharge to Jordan River • Permit to discharge to Jordan River issued in August 2003 • Public concerns expressed regarding environmental impacts • Jordan Valley’s Board of Trustees considered the concerns expressed • Jordan Valley’s Board of Trustees withdrew Jordan River discharge permit RO Byproduct Disposal Alternative #3 Deep Well Injection • Deep well drilled near Zone B plant • Well drilled at least 5,000 feet deep RO Byproduct Disposal Alternative #4 Discharge to Great Salt Lake • Pump byproduct from West Jordan to Great Salt Lake (GSL) in 23 mile pipeline • Construct a new discharge pipeline (8” to 12”) into Great Salt Lake • Discharge into south arm of GSL east of Saltair RO Byproduct Disposal Alternative #5 Discharge to KUCC GSL Discharge Pipeline • Pump byproduct from West Jordan to GSL in a 26 mile pipeline • Discharge byproduct into existing KUCC GSL discharge pipeline RO Byproduct Disposal Alternative #6 Discharge to KUCC Tailings Impoundment • Pump byproduct from West Jordan to Magna in a 20 mile pipeline • Pump byproduct up 400 feet into KUCC Tailings Impoundment • Nutrient (phosphorus) levels in Lost Use byproduct will enhance algal blooms in Tailings Impoundment RO Byproduct Disposal Alternative #7 Evaporation • 2,450 acre feet per year divided by 3 feet of evaporation per year equals 820 acres of evaporation pond surface area • Addition of 20% for dikes and maintenance roads equals 980 acres RO Byproduct Disposal Alternative #8 Distillation • Heat byproduct to boiling – capture steam • Dispose of solid salts –Municipal landfill –KUCC tailings impoundment –reuse of salts RO Byproduct Disposal Alternative #9 Discharge to KUCC Tailings Pipeline • Pump byproduct west along 7800 South to KUCC tailings pipeline • Discharge byproduct into tailings pipeline • 540 psi (1250 feet)pump lift required