2011 DWINSA 2011 Drinking Water Infrastructure Needs Survey Overview of the American Indian and Alaskan Native Village Survey History, Statistics and Approach 1996 Safe Drinking Water Act Amendments Section 1452(i)(4) of the Safe Drinking Water Act requires EPA, in consultation with the Indian Health Service (IHS) and Indian tribes, to prepare surveys and assess the needs of drinking water systems serving American Indians and Alaskan Native Villages What does the survey measure? Public water systems’ 20-year needs for infrastructure construction, rehabilitation and replacement Community and not-for-profit non-community public water systems (e.g. schools, office building, etc.) Only captures needs of existing public water systems Why is the survey important? Resultshelp determine regional distribution of Drinking Water Tribal Set-Aside funds ► Set-asides are allotted each fiscal year Set-aside allotment formula: ► 2% to each region with tribes (= 18% total) ► Remaining 82% allocated by assigning weight of 50% to IHS’s SDS list, and 50% to tribal needs survey Implications for Participating Systems The survey… ► Does not serve as a grant or loan application ► Does not ensure funding of the projects ► Does not obligate the tribe to implement those projects ► Does support long-term planning of the water system infrastructure needs History of AI/ANV Survey The AI/ANV survey effort was coordinated with the 1995 and 1999 State Needs Surveys Workgroup develops approach for AI/ANV survey ► AI and ANV representatives ► Indian Health Service (IHS) ► Village Safe Water (VSW) ► EPA 1995 and 1999 American Indian Surveys Census of medium systems (serving greater than 3,300 people) ► All medium systems were surveyed via mailed questionnaire ► Technical assistance was provided by phone Statistical sample of small systems (serving 3,300 or fewer) ► Site visits conducted for all systems Medium Systems Small Systems Survey Year Sampled Sampled 1995 15 (out of 15) 57 (out of 682) 1999 19 (out of 19) 78 (out of 762) 2003 and 2007 DWINSA State and island survey only ► In 2003, small state systems were not included ► In 2007, small state systems were surveyed AI and ANV needs ► Systems not surveyed ► Adjusted 1999 results to current year dollars ► High level of confidence in 1999 findings 2011 AI/ANV Survey 12 years since systems surveyed Representatives of AI and ANV systems agreed that new survey necessary to capture updated needs Primacy agency (EPA regions and Navajo Nation) responsible for completion of survey ► EPA HQ oversees process How many Region 9 systems will participate? 65 systems in Region 9 (excl. Navajo) 40 systems in Navajo Nation 25% SRF-eligible Region 9 systems, 36% SRF-eligible Navajo Nation- regulated systems Approach and Statistical Methods Data Quality Objectives Two sampling frames ► American Indian Systems ► Alaskan Native Village Systems Overall DQO for each ► Confidence level of 95% ► Precision target of ±10% Same DQOs as the national level and each participating state for the state survey 2011 AI/ANV Survey Statistical Approach Alaskan Native American Indian Systems Village Systems Population >10,000 25 – 10,000 > 25 Data EPA Regions and the Navajo Nation coordinate with AI and Collection ANV water system owners to complete survey Census Random Sample Sample (all systems Random Sample (includes all sampled) >3,300) Data Quality 95% +/- 10% 95% +/- 10% Objective Systems 14 of 14 206 of 770 88 of 188 Sampled AI/ANV Survey Strata Population Surface Water Groundwater M E > 10,000 Census – All Systems D I Receive Questionnaire U M 3,301-10,000 S M 1,001 to 3,300 Random Sample A L 501 to 1,000 L 25 to 500 American Indian Need Total AI Need ► Multiply each system’s need by its final weight (each system represents ~3.5 systems) ► Total need = (system need * weight) Determining Each Region’s AI Need ► Calculate average need per stratum (population and source water type) Average need = total need in that stratum / number of systems in that stratum nationally ► EPA Region AI Need Regional need per stratum = average need * number of systems in that Region’s inventory Total Regional Need = of strata Exhibit 1.12 Drinking Water Infrastructure Needs Survey and Assessment Fourth Report to Congress (2007 survey) Navajo Nation needs will be a separate line item in the fifth report to Congress AI/ANV Survey Process 5 Categories of Need Source Transmission and ► Wells, surface water Distribution intakes, springs ► Include appurtenances Treatment Other ► Complete plants and ► Emergency power components generators Storage ► System security ► Finished water tanks and ► Computer and automation reservoirs costs ► No raw water reservoirs Allowable Projects Must be: ► Capital improvement needs ► Eligible for SRF funding ► In furtherance of public health goals of the SDWA Violation or regulatory requirement is not necessary ► Within the survey timeframe (2011 through 2030) Must meet documentation requirements ► Ensures fairness and credibility Types of Documentation Survey-generated ► Generated specifically for the Needs Survey Independent ► Planning documents written for purposes other than the Needs Survey Assigning Costs To contribute to the need, each project must have a cost assigned ► Independently-documented cost estimate EPA adjusts cost to 2011 dollars ► Information for EPA to model cost “modeling parameters” (e.g., MG – storage; MGD – source, treatment, pumping; diameter and length of pipe) EPA can model most, but not all, project types New Ground Level Finished Water Storage Tribal Collaboration and Data Gathering Approach Tribal Leader/Contact Role ► Confirm/correct system information ► Identify additional needs outside of SDS ► Provide additional studies or project documentation EPA Region/Navajo EPA/Contractor Role ► Compile existing information ► Identify any suspected information gaps ► Identify proposed data collection approach (i.e., site visit or phone interviews) ► Complete questionnaire and compile submittal after collaborating with tribal contact AI/ANV Survey Data Flow Training for EPA Regions and Navajo Nation EPA EPA Region will send notification letter to tribal leaders to inform them which tribal employees EPA Region will coordinate with for data collection AI/ANV Survey Data Flow AI/ANV-Specific Issues Homes Without Adequate Water Service Constructing new public water system ► Not part of DWINSA data collection ► EPA plans to include a note about these needs in the survey report Extending service ► Demonstrate inadequate quality/quantity of water and feasibility of the project Not-for-profit Noncommunity Systems Included in the sample with community systems EPA Regions/Navajo Nation were asked to identify NPNC systems in their frames Casinos are assumed to be not-for-profit Efficient and Effective Data Collection Efforts Methods of Data Collection 1. EPA and Navajo Nation file review 2. IHS STARS data system review Review existing SDS project data Frozen November 2010 3. Phone interviews with water systems and Indian Health Service staff 4. Site visits by the EPA Regions and the Navajo Nation (as needed) Review Process EPA contractor reviews submittal ► Some projects may be amended or rejected Allowability or documentation issue ► Modification requests may be submitted ► If modification denied, EPA Region, Navajo Nation, or water system may request reconsideration Tribal DWINS Workgroup USEPA Office of Ground Water and Drinking Water EPA Region will request tribal concurrence on the final needs determination Key Dates September 2010 November 2011 ► Tribal leaders contacted via ► Final questionnaires letter to explain survey deadline October 2010 February 2012 ► Final modification deadline ► Conference call with tribal leaders February 2013 January 2011 ► Report to Congress due ► Questionnaires sent* 2011 DWINSA Thank You Any Questions?
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