clean watersheds needs survey (cwns) 2012 gap approach option june 22, 2010

Clean Watersheds Clean Watersheds Needs Survey (CWNS) Needs Survey (CWNS)

20122012

Gap Approach OptionGap Approach Option

June 22, 2010June 22, 2010

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OverviewOverview

1) Introduction to the Wastewater Infrastructure “Gap” Approach

2) Gap Approach in Pennsylvania’s 2008 Governor’s Sustainable Infrastructure Report

3) Gap Approach Option in CWNS 2012

4) Sample State CWNS Gap Data Collection Form

5) Mock CWNS Data Entry Portal modifications for Gap Approach

6) Appendix – CWNS Categories

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1)Introduction to theWastewater Infrastructure

Gap Approach

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What do we mean by What do we mean by Wastewater Infrastructure Wastewater Infrastructure

“Gap?”“Gap?”Wastewater Infrastructure Treatment Plants, Pump Stations, Pipes

GapTotal 20-Year Needs (capital, O&M, debt service)

Projected 20-Year Revenues

= 20-Year Gap

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How is gap calculated?How is gap calculated?

It is calculated on a facility- or system-basis for a given year.

Gap for that facility or system can then be totaled for a 20-year period.

By extrapolating from a sample set of systems, the Gap for all facilities and systems in a state can then be estimated.

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2) Gap Approach in 2) Gap Approach in Pennsylvania 2008 Pennsylvania 2008

Governor’s Sustainable Governor’s Sustainable Infrastructure ReportInfrastructure Report

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Pennsylvania’s 2008 Governor’sPennsylvania’s 2008 Governor’sSustainable Infrastructure ReportSustainable Infrastructure Report

PA collected data from sampled facilitiesCondition and Replacement Costs of Facility Assets (Pipes,

Treatment Plant Unit Processes,…)

Current and Projected O&M and Capital Costs

Existing Debt Service

Current and Projected Revenues

Asset Management Practices

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Funding the Needs in PennsylvaniaFunding the Needs in Pennsylvania

The Governor’s Report found a total 20-year water and wastewater infrastructure funding gap of $43.8 B ($28.3B of that was wastewater)

Total available funding (grants plus cash-value of low-interest loans) was $2.1 B

Complete Report at: http://www.portal.state.pa.us/portal/server.pt/community/sustainable_water_infrastructure_task_force/10565

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WasteWater Facilities - Gap vs Rates

Total Gap for Facilities Serving Populations:

$0

$4,000,000,000

$8,000,000,000

$12,000,000,000

$16,000,000,000

$20,000,000,000

$24,000,000,000

$28,000,000,000

$32,000,000,000

As Is 0.5% 1.0% 1.5% 2.0% 2.5%

Rates (as % of MHI)

Gap

(in

Mill

ion

$)

a) < 0.1 MGD b) 0.1 - 1.0 MGD c) 1.0 - 5.0 MGD d) > 5 MGD

Chart from Governor’s ReportChart from Governor’s Report

99MHI = Median Household Income

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Governor’s Report data used Governor’s Report data used for statewide policy decisions…for statewide policy decisions…

Statewide information on where subsidy dollars should go to make the greatest difference

Data to support recommendations for legislative or regulatory change

Promote better management (Asset Management) and Full Cost Pricing

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Pennsylvania can do Gap Approach to CWNS Pennsylvania can do Gap Approach to CWNS 2012 with same resources as Traditional 2012 with same resources as Traditional

MethodMethod

Spend more time on each system involved, but do a sample rather than document the needs in all systems

CWNS 2012 Gap Approach data elements are significantly fewer than PA Gap data elements

Data collection form and CWNS DEP will allow data collection w/o site visits to many systems

Less documentation requirements than Traditional Method

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3) Gap Approach Option 3) Gap Approach Option in CWNS 2012 in CWNS 2012

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CWNS 2012 Gap Approach CWNS 2012 Gap Approach OptionOption

For Wastewater Treatment Plants & Sewer Systems:

• Switch to Sample Survey

• Collect more detailed data per facility

- documented & asset condition based capital needs

- O&M costs

- revenues

For Stormwater, Decentralized Systems, NPS Projects:

Use the Traditional Documentation Methods and census approach

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EPA would provide randomly sampled selections of facilities for each State

Except for large facilities, a facility sampled in one survey would be exempt from samples in the next survey

Sample designed for estimating State needs to within 25% of true value at 95% confidence level


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Average sampling rates

– Small Facilities (Pop<10k): 10 - 25%

– Medium Facilities (Pop:10k-100k): 30 - 60%

– Top 3% Facilities: 100%


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Level of Effort EstimatesLevel of Effort EstimatesBased on PA’s Gap Approach ExperienceBased on PA’s Gap Approach Experience

# Facilities or Projects Hours

# Facilities or Projects Hours

Wastewater - Separate Systems 575 1236 250 1086

Wastewater - Combined Systems 326 702 240 596

Stormwater, Decentralized, NPS 682 1466 682 1466

TOTAL 1583 3404 1172 3148

Traditional Methods Gap Approach

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Capital needs component of States’ Gap totals – extrapolated to account for all systems in these States - will be included in the “Official Needs” section in the CWNS 2012 Report to Congress

Entire suite of States’ Gap data would be summarized in a new Gap Analysis section of the CWNS 2012 Report to Congress

The Gap Approach Option in the The Gap Approach Option in the 2012 Report to Congress2012 Report to Congress

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Pros ConsProvides complete State-level Does not support watershedassessment of Needs, & other sub-State area Revenues, Gaps displays & analyses that

require census CWNS data

Encourages surveyed facilities Potential Mitigation: For Stateto perform asset management uses only (not for inclusion and other comprehensive in the Report to Congress) assessments & management States could continue to techniques collect & enter into CWNS

“traditional” CWNS data for all non-Gap sampled facilities

CWNS 2012 Gap Approach OptionCWNS 2012 Gap Approach OptionPros & Cons to StatesPros & Cons to States

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4) Sample State CWNS4) Sample State CWNSGap ApproachGap Approach

Data Collection FormData Collection Form

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5) Mock CWNS Data Entry 5) Mock CWNS Data Entry Portal modifications for Portal modifications for

Gap ApproachGap Approach

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Gap Analysis Data Areas not Gap Analysis Data Areas not Requiring DEP changesRequiring DEP changes

• LocationLocation

• FlowFlow

• DischargeDischarge

• EffluentEffluent

• Needs by DocumentsNeeds by Documents

• Capital CostCapital Cost

Allows a federal user to set and unset GAP facilities

Allows searching Gap facilities

Indicates Gap facility

2222

Indicates Gap Facility

Year and first month of local fiscal year

2323

Number of connections or accounts

2424

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Asset Failure ModesAsset Failure ModesMode Definition

1. Capacity Volume of demand exceeds design capacity

Growth, system expansion

2. Level of Service

Functional requirements exceed design capability

Codes/permits: NPDES, CSOs, SSOs, OSHA, noise, odor, life safety; service, etc

3. MortalityConsumption of asset reduces performance below an acceptable minimum level

Physical deterioration due to age, usage (including operator error), acts of nature

4. EfficiencyPerforms ok, but cost of operation exceeds that of feasible alternatives

“Pay-back” period

Tactical Aspects

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Not applicable to Asset Management Analysis Needs

2828

By default facility address zip code is populated. Lookup will allow selection of other service areas zip codes

Revenue & expenses is a sub tab under Needs tab

Future year values fo

r 20 years will b

e auto-populated based on year 1

and using escalation fa

ctors from Departm

ent of L

abor and other

sources. Auto-populated values can be updated. I

f the auto-populated

values are updated the fu

ture values will be re

-calculated accordingly.

Calculated using zip code(s)

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For More Information, ContactFor More Information, Contact

Michael PlastinoMichael [email protected]@epa.gov202-564-0682202-564-0682

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6) AppendixCWNS Categories

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CWNS 2008 CategoriesCWNS 2008 Categories

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