City of Polson

April 5, 2010

PUBLIC HEARING Water System Improvements

PRESENTATION ON PRELIMINARY ENGINEERING REPORT

Project Scope

     

Prepare Preliminary Engineering Report (PER) Address Short and Long-Term Water System Problems Incorporate Results from Hydraulic Modeling Performed by Thomas, Dean and Hoskins Develop Financial Plan Pursue Financial Assistance Keep the Public Informed

What is a PER??

      

Analysis of the Existing Water System Identification of System Deficiencies, Current and Future Regulatory Issues Evaluate Viable Solutions, Develop Costs Identify the Most Cost-effective Option Develop a Workable Financial Plan Assess Environmental Impacts Implementation Strategy

Preliminary Engineering Reports Keys to Success

•

Document Need!!

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Comply with PER Outline

•

Reasonable Capital and O&M Costs

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Address Existing and Future Regulations

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Workable Financial Plan

•

Encourage Public Involvement

Project Design Criteria

2010 Water System PER City of Polson Existing and Projected Water Use 2005 Existing 2006 2007 2008 2009 2010 Projected 2020 2030 ADD (Average Daily Demand in GPD)

ADD (GPM) Estimated Population* GPCD (ADD/Population)

Population/2.32 Household = EDU Est. Commercial/Inst. EDU's

Total EDUs Use/EDU (GPD)

ADD with 10% Reserve Capacity (GPM) * Utilized 3% annual growth rate 765831 531.8

4,849 158 2090 497 2587 296.0

MDD (Max. Daily Demand) = ADD X 2.2 = GPD

MDD (GPM)

PHD (Peak Hourly Demand)= 2.5 X MDD = GPM

Pump Capacity* (GPM)

Pump Capacity w largest Pump out of Service 2120 1600 817957 760813 718456 749012 568.0

528.3

498.9

520.1

4,985 164 2149 512 2661 307.4

5,089 150 2194 527 2721 279.7

5,228 137 2253 543 2796 256.9

5,385 139 2321 559 2880 260.1

776440 539.2

5,546 140 2391 576 2967 261.7

593.1

2120 1600 2120 1600 2120 1600 2120 1600 1878985 1305 3262 2120 1600 1043560 724.7

7,454 140 3213 774 3987 261.7

797.2

1402380 973.9

10,017 140 4318 1041 5359 261.7

1071.3

2525415 1754 4384 2120 1600 3393760 2357 5892 2120 1600

City of Polson Water Demand and Supply

ADD with 10% Reserve Capacity MDD (GPM) Current Pump Capacity (GPM) Pump Capacity* (GPM) *w ith largest w ell out of service

2010

593 1305 2120 1600

2020

797 1754 2120 1600

2030

1071 2357 2120 1600

Problem Evaluation and Resolution

   Water Supply Storage Distribution – Water Mains, Valves and Hydrants  Develop Financial Plan

Water Supply Problems

      

Additional Water Needed to Meet Anticipated Peak Demand Water Needed on East Side of City during High Demand Unaccounted for Water



Leakage



Unmetered Users Complex Water Rights Issues Variable Aquifer Characteristics Limited Data on Peak Use and Aquifer Response Global Warming (Drought)

Activities to Address Water Supply Issues

   

Obtain New Sources of Groundwater Replace All Malfunctioning Water Meters Install Meters on City Facilities Remain Involve in All Water Rights Negotiations, Further Investigate Existing Rights



Expand Monitoring of Water Use including PWL, SWL and Peak Use

Potential New Well

Storage Tank Needs



Two Tanks Under Construction



Renovate Interior Tank Coating on Skyline I



Connect Available Storage at Skyline to West Parts of Town



Plan for Future Storage near Woodbine Tank

Identified Distribution System Problems

   

Low Pressures and Lack of Adequate Flow to Fight Fires in the Downtown Area Skyline-Woodbine Connector via Skyline Drive Reconstruction Hydraulic Restrictions (undersized mains) 4 th Street East, etc Looping of Water Mains- Irvine Flats, Kerr Dam Road.

Resolution of Distribution System Problems

    

Downtown Water Main Improvements Install 10” Main in Skyline Drive under Road Reconstruction Project Eliminate Hydraulic Restrictions Water Main Looping Ongoing CIP for Undersized Mains

Summary of High Priority Needs

 Supply  Construct New Well on East Side  Address UAW  Storage  Rehabilitate Skyline I Metal Tank  Connect Skyline Storage to West Side  Distribution  Downtown Main Upsizing  Skyline Drive Reconstruction  Address Hydraulic Restrictions thru out City

Cost Summary

   New Well - $231,945 Storage Improvements - $189,610 Distribution Improvements - $1,920,309

Total High Priority Needs

Total Construction Cost $ 1,658,330 Contingency $ 282,244 Engineering Legal, Administration $ 331,666 $ 69,623

TOTAL PROJECT COST $ 2,341,864

Financial Assistance

     Treasure State Endowment Program  up to $500,000 grant DNRC Renewable Resources Grant  up to $100,000 grant CDBG Grant  up to $500,000 Montana State Revolving Loan Fund  2.75% and 3.75% loans  up to 30 year term Current Economy May Limit Grant Opportunities

Other Funding Scenarios

    Extend Loan Term Seek $500,000 CDBG grant Divide Project into Smaller Components Pursue STAG, WRDA, ARRA, RD or other Grant Funding

Existing Rates for Water and Sewer Service

Current “Typical” Water Rate Current “Typical” Sewer Rate Combined Rate $25.09

$28.75

$53.84

Target Rate Used for Funding $ 41.92

Cost for Ratepayers

Assumptions- No Local Funds, Use SRF Loan Funds @ 3.75% for 20 Years Debt Amount Debt Reserve Total Loan # EDU’s Debt Cost Coverage (25%) Cost per User No Grant $ 2,341,864 $ 180,750 $ 2,522,614 2967 $ 5.10 $ 1.28 $ 6.38 50% Grant Funding $ 1,170,932 $ 90,375 $ 1,261,307 2967 $ 2.55 $ 0.64 $ 3.19

Potential Project Schedule

     Complete PER this Spring Develop CIP Grant Applications due April-May of 2010 Grant Funds Available in Summer 2011 City is in Process of Drilling Test Well

QUESTIONS?

Contacts: Scott Anderson @ 449-3303 or Tony Porrazzo @ 883-8215 THANK YOU!!