clean watersheds needs survey (cwns) 2012 gap approach option june 22, 2010
TRANSCRIPT
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
CWNS 2012 Gap Approach CWNS 2012 Gap Approach OptionOption
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Average sampling rates
– Small Facilities (Pop<10k): 10 - 25%
– Medium Facilities (Pop:10k-100k): 30 - 60%
– Top 3% Facilities: 100%
CWNS 2012 Gap Approach CWNS 2012 Gap Approach OptionOption
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CWNS 2012 Gap Approach CWNS 2012 Gap Approach OptionOption
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
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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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