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 ??