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Metropolitan CouncilEnvironmental Services
A Clean Water Agency
Presented to the Environment Committee
January 13, 2009
Inflow/Infiltration (I/I) Program
Bryce Pickart, Assistant General ManagerKyle Colvin, Assistant Manager, Engineering Planning
Jason Willett, MCES Finance Director
I/I Index
Overview— Policy and Strategy (Pickart)— Minneapolis Issues (Pickart)
Current Program— I/I Program Update (Colvin)
Grant Program (Willett)
Demand Charge (Willett)
I/I
Overview
I/I
I/I Policy and Strategy
Infiltration/Inflow Program— 2000-2002: Problem identification— 2003-2004: I/I Task Force— 2005: Water Resource Management
Policy Plan
I/I Policy and Strategy
Water Resources Management Policy Plan— Infiltration/Inflow Policy
– The Council will not provide additional capacity to serve excessive infiltration/inflow (based on design flow standard)
I/I Policy and Strategy
Infiltration/Inflow Program— Communities implement infiltration/inflow
reduction programs to achieve compliance with Council design flow standard by 2012
— Starting in 2013, the Council will implement a wastewater demand charge for those communities that have not achieved compliance
I/ICommunities withExcess I/I
I/I Minneapolis Issues
NPDES Permit for Combined Sewer Overflows
City’s Infiltration/Inflow Program
City’s Comprehensive Plan Update
I/I
Current I/I Program
I/I I/I Program Update
Last presentation given to Environment Committee: Oct. 23, 2007
Local community activities— Community status update
MCES activities
Future milestone dates
I/I Local Mitigation Update
2009 CommunitiesArden Hills Lauderdale Osseo Bayport*** Lilydale RosevilleChanhassen Long Lake Savage** Columbia Heights Maple Plain*** Shoreview Eagan Maplewood *** South St. Paul** Eden Prairie Medicine Lake St. Louis Park* Edina Mendota St. Paul Excelsior Minneapolis Stillwater Farmington Minnetonka Tonka Bay Golden Valley Minnetonka Beach Vadnais HeightsGreenwood New Hope WaconiaHopkins Oakdale West St. Paul Lakeville Orono
*New community in 2009**Communities completing 5-year work in 2009***Communities with increased surcharge in 2009
I/I Local Mitigation Update
2009 Summary— Total: 38 communities— One new community: St. Louis Park— Three communities with increased work:
Bayport, Maple Plain, Maplewood— Two communities will complete 5-year work:
Savage, South St. Paul— Local efforts: $13 million
I/I
Community IssueFridley Appeal-permitted storm connection
(B&N Railyard)
Bloomington Completed 5-year mitigation plan in 2008
New Brighton Completed 5-year mitigation plan in 2008
Plymouth Completed 5-year mitigation plan in 2008
St. Anthony Completed 5-year mitigation plan in 2008
Local Mitigation Update
Communities removed from 2008 list
I/I Local Mitigation Update
Communities with reduced 2009 work
Original Revised* BasisMaplewood $255,640 $122,267** Source eliminated &
work completed in metershed
Minnetonka $384,600 $371,000 Source identified as non wet-weather related
New Hope $228,900 $151,900 Sources eliminated
Minneapolis $8,066,138 $4,772,600 Sources eliminated
*Revised figure excludes any credit carryover from over expenditure from previous year.
**Figure does not include additional surchages.
I/I
Total spent Community through 2008 I/I Amount
Bloomington (‘09) $252,000 $305,175Chaska $287,000 $298,295Medina $151,550 $286,515Mound $56,000 $89,296New Brighton (’09) $136,500 $137,854Plymouth (’09) $343,000 $460,679St. Anthony (’09) $1,183,000 $1,380,808St. Bonifacius $20,480 $33,543
Local Mitigation Update
Communities having spent “total” I/I amount through 2008
I/I
Extension Community Original Revised Year
Excelsior $56,000 $33,884 2015Lilydale $25,200 $11,403 2018Medicine Lake $11,900 $6,193 2016Minnetonka Beach $26,600 $9,666 2019St. Paul $5,950,000 $3,513,083 2015
Communities requesting 25 percent capon annual I/I work
Local Mitigation Update
I/I
PotentialExceedance I/I Work
Community Storm Event Increase Increase
Bayport 9/20/07 0.06 $21,900
Maplewood 8/28/07, 9/20/07 0.28 $102,200
Maple Plain 10/05/07 0.04 $14,600
St. Louis Park* 8/11/07 0.05 $17,750
Local Mitigation Update
2009 Storm Events (July 1, 2007-June 30, 2008)
A total of 15 wet weather events resulted in at least one metershed exceedance; 4 of which increased a community’s I/I work. Potential I/I work increases based on 2009 rate per MGD of $365,000.
*New to program in 2009
I/I Local Mitigation Update
Timeline— July 1, 2008-June 30, 2009: Peak flow monitoring for
2010 I/I work determination— On-going: Determination of credit eligibility— March 31, 2009: Community deadline for 2008 cost
credit submittal— July 15, 2009: Preliminary 2010 I/I work amounts sent
to cities— September 15, 2009: Community work plans for 2010
work— November 15, 2009: MCES response to work plans
I/IRegional & LocalMitigation Update
Ongoing efforts— Determination of eligibility of submitted 2008
work credits for local mitigation efforts— Work with communities to provide technical
assistance (joint studies, data, meetings, etc.)— MCES System Assessment and Rehabilitation
including system-wide metering needs— Comprehensive Plan Update reviews
I/I Regional Mitigation Update
MCES I/I activities— Joint studies and inspections where regional
interceptors serve as local trunk sewers
— I/I identification, condition assessment, capital improvement program
— System rehabilitation program– Areas prone to flooding (Golden Valley, Lakeville,
Shorewood, Twins Stadium area drain)
– 2008 Trenchless Rehabilitation
— System-wide Meter Improvement Project
I/I Regional Mitigation Update
MCES/community joint projects— St. Paul: Currently collecting meter data as
part of joint study
— Minneapolis: Currently collecting meter data as part of joint study
I/I Program Update
Special circumstances— Eagan/Apple Valley
– Minnesota Zoo
— Minneapolis– University of Minnesota, Twin Cities Airport, MnDOT (current
joint study)
— St. Paul– University of Minnesota and State Fairgrounds; included in
joint study
— South St. Paul– Stockyard area (MnPCA); City reports area to be eliminated
through redevelopment in 2009
I/I
Grant Program
for foundation drain disconnections for service
lateral work
I/I Grant Program
Grant money available at beginning of program:— $700,000 (source: returned Metropolitan
Environmental Partnership grant funds)
Eligible local governments:— Those currently on MCES Excess I/I list and
pre-approved by MCES for grant program
Eligible properties:— Buildings (not City infrastructure) connected
to sanitary sewer
I/I Grant Program
50 percent of direct costs is reimbursable, up to maximum/property
Funds must be wholly passed through to property owners
First come, first served (when funds are gone, program is over)
Information on Web site:www.metrocouncil.org/environment/ProjectTeams/whatsnew.htm
I/I Grant Program
Jan. 1, 2008: Effective date of program
Oct. 1, 2008: Effective date of changes— Changes included:
– Program extended to 2011– Program broadened to include service line work– $2,000 maximum grant for service line work
I/I Participating Local Governments
Grant $ paid through 12/31/08
Maple Plain $11,222
West St. Paul $77,640
St. Paul $67,157
Golden Valley $22,477
Maplewood $0
Chaska $0
Lauderdale $0
Waconia $0
TOTAL paid through 12/08: $178,496 ($521,504 remaining)
These communities are approved as eligible but have not yet made a claim.
I/I
Demand Charge
= a community-specific charge for excess capacity demand
I/I Background Facts
Required by Water Resources Management Policy Plan (WRMPP)
“Starting in 2013, the Council will institute a wastewater rate demand charge program for those communities that have not met their inflow and infiltration goal(s).” (p. 40)
Impacts community I/I efforts now
We said we’d have a public process for developing the Demand Charge details
Minneapolis asked for 3-year notice of how the Demand Charge will work
I/I Development Options
1. Begin development process now and implement in 2013
2. Begin development of charge now but reconsider implementation date
3. Delay development and implementation
Requires changing WRMPP
I/I Develop Demand Charge
Community Task Force?— Develop goals/criteria of charge
Hire consultant— Review similar charges across other metros— Identify feasible designs— Analysis of design
Consider need for legislation
I/IDelay Implementation of Demand Charge
Why?— Success of local programs gives MCES
ability to delay— Capital Project decisions for some growth
projects are being deferred— Cities are under a lot financial pressure with
declining property values and local government aid (from State)
I/I Recommended Next Steps
Establish a Task Force
Begin review of Demand Charge (decision on implementation date can wait)
I/I
Questions,Discussion, Direction ??