OUTSIDE THE STOVEPIPE - MRWA · outside the stovepipe one community’s solution to including well...
Transcript of OUTSIDE THE STOVEPIPE - MRWA · outside the stovepipe one community’s solution to including well...
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OUTSIDE THE STOVEPIPEONE COMMUNITY’S SOLUTION TO INCLUDING WELL
HEAD PROTECTION IN PLANNING AND ZONING DECISIONS
MINNESOTA RURAL WATER ASSOCIATIONTECHNCIAL CONFERENCE
MARCH 4, 2020
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IT’S JUST WATER, RIGHT?
RICK WAHLENCITY OF EDEN PRAIRIE
MANAGER OF UTILITIESPhone: 952-294-5908
Email: [email protected]
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WELLHEAD PROTECTION PLANIS EVERYONE’S BUSINESS
• EDEN PRAIRIE WATER SYSTEM OVERVIEW• EDEN PRAIRIE’S WELLS• QUICK GEOLOGY LESSON• WELLHEAD PROTECTION PLAN PROCESS• CURRENT AND FUTURE PROTECTION AREAS• NEXT STEPS• CHALLENGES WITH LOCAL PLANNING• BUILDING CONSENSUS INTERNALLY• QUESTIONS
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UTILITY DIVISION ORGANIZATION OF ASSETS
• WATER• SUPPLY• TREATMENT• STORAGE• DISTRIBUTION
• WASTEWATER COLLECTION
• STORM WATER CONVEYANCE
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UTILITY DIVISION ORGANIZATION OF ASSETS
• WATER• SUPPLY• TREATMENT• STORAGE• DISTRIBUTION
• WASTEWATER COLLECTION
• STORM WATER CONVEYANCE
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PUBLIC WATER SYSTEM
• WATER SYSTEM($94 MILLION ORIGINAL COST)
15 WELLS28 MGD LIME SOFTENING TREATMENT PLANT3 WATER TOWERS (5 MG), PLANT RESERVOIRS (3.5 MG)327 MILES WATER MAIN4,000 FIRE HYDRANTS20,000 SERVICE CONNECTIONS
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EDEN PRAIRIE’S WELLS
• 15 DEEP WELLS (AVERAGING 400 FEET) • FIRST WELL CONSTRUCTED IN 1971• PRAIRIE DU CHIEN – JORDAN AQUIFER• LOWER MINNESOTA RIVER WATERSHED
1,174,350 acres• MISSISSIPPI RIVER-TWIN CITIES WATERSHEDS
644,320 acres• LAKES, PONDS & STREAMS ARE INDEPENDENT
OF THE AQUIFER• DISCONTINUOUS CONFINING LAYER• RECHARGE BY LEAKAGE FROM OVERLYING
MATERIALS SINCE 1953• DESIGN CAPACITY OF 1500 gpm EACH• TOTAL APPROPRIATION OF 3,450 mgy
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EDEN PRAIRIE’S SURFICIAL GEOLOGY
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EDEN PRAIRIE’S BEDROCK GEOLOGY
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WELLHEAD PROTECTION PLANPROCESS
• GOVERNED BY MN DEPT OF HEALTH (MDH)– MDH DIRECTS EACH UPDATE INDIVIDUALLY– CURRENTLY INDIVIDUAL RATHER THAN WHOLISTIC
• UPDATE EVERY 10 YEARS (OR UPON WELL ADDITION)– LAST WELL CONSTRUCTED 2010 – MDH DEFERRED PLAN UPDATE – TWO-PHASED UPDATE PROCESS
• PART 1 - DELINEATION OF WELL HEAD PROTECTION AREA• PART 2 - ACTION PLAN TO PROTECT THE PUBLIC WATER SUPPLY
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WELLHEAD PROTECTION PLANPROCESS
• PART 1 COMPLETED OCTOBER 2012– DEFINITION OF THE DWSMA– CONCURRENCE OF LOCAL UNITS OF GOVERNMENT– PUBLIC MEETING
• PART 2 COMPLETION JULY 2015– MANAGEMENT STRATEGIES– 6 MONTH EXTENTION (JULY 2015)– CONCURRENCE OF LOCAL UNITS OF GOVERNMENT– PUBLIC HEARING– DEPARTMENT OF HEALTH APPROVAL
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WELLHEAD PROTECTIONAREA
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COMPARISON OFWELLHEAD PROTECTION AREAS
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DWSMA VULNERABILITY
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EMERGENCY RESPONSE AREA
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BORDERING COMMUNITIES WITHIN DRINKING WATER SUPPLY MANAGEMENT AREA
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POTENTIAL CLASS V WELL LOCATIONSPRIORITIZED WITHIN EXPANDED DWSMA
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ACTIVE NON-MUNICIPAL WELLSPRIORITIZED WITHIN EXPANDED DWSMA
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KNOWN RELEASE SITESPRIORITIZED WITHIN EXPANDED DWSMA
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WHAT’S NEXT
• EVALUATE CLASS V WELLS (FLOOR DRAINS & SEPTIC SYSTEMS)• EVALUATE THE ESTABLISHMENT OF A WELLHEAD PROTECTION OVERLAY
DISTRICT• UNDERGROUND STORAGE TANK LAND USE PROVISIONS WITHIN ERA• COORDINATED SPILL RESPONSE PLAN REVIEW• EVALUATE STORMWATER RUNOFF WITH RESPECT TO INFILTRATION• CONTINUE TO RAISE PUBLIC AWARENESS IN HIGHLY VULNERABLE AREAS• RAISE WELL OWNER AWARENESS• PUBLIC EDUCATION• UPDATE POTENTIAL CONTAMINANT SITE INDEX ANNUALLY• PARTNER WITH MINNETONKA AND CHANHASSEN IN OVERLAPPING DWSMA• PLAN TO NOTIFY WELL OWNERS IF CONTAMINANTS ARE DISCOVERED
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IT’S NOT JUST WATER, IS IT?
QUESTIONS?
RICK WAHLENCITY OF EDEN PRAIRIEMANAGER OF UTILTIESPhone: 952-294-5908
Email: [email protected]