MADERA COUNTY STORM WATER RESOURCE PLAN. TAC Meeting #2. August 30th, 2017

Transcription

1 MADERA COUNTY STORM WATER RESOURCE PLAN TAC Meeting #2 August 30th, 2017

2 Meeting Agenda 10:30 Introductions (10 mins) Meet the SWRP team and other TAC Members 10:40 Project Prioritization Approach with Examples (30 mins) Review the prioritization process and results for the first 3 SWRP projects 11:10 New Project Solicitation & Concept Development (30 mins) Receive TAC input and suggestions on project solicitation approach and identification of new project concepts to develop for inclusion in the SWRP 11:40 Scheduling Future Meetings (10 mins) Meeting #3 In-Person: Wk of October 16 Meeting #4 Conference Call: Early November 11:50 Time for Questions

3 I. SWRP PROCESS: Project Prioritization Approach Project Ranking An objective method to rank project relative to a set of stormwater multi-benefits with two components: 1. Spatial Prioritization Analysis: Identify areas of greatest stormwater/dry weather flow impacts/potential benefits. 2. Project Multi-Benefits Assessment Combine multiple criteria for estimating overall value from SW multi-benefits of projects. Water Supply Water Quality Flooding Environmental Community

4 I. SWRP PROCESS: Project Prioritization Approach Criteria Metrics Impacts + Potential Benefits Water supply Water quality Flood risk Quantitative measure of criteria Dry weather water use GW elevation change Subsidence GW recharge potential Modeled runoff Modeled pollutant loading Sold erodibility Length of impaired WB Impervious area Potential flooded area

5 I. SWRP PROCESS: Project Prioritization Approach

6 I. SWRP PROCESS: Project Prioritization Approach Draft Regional Spatial Outputs Overall regional benefit opportunity score

7 I. SWRP PROCESS: Project Prioritization Approach Initial Projects Assessment

8 I. SWRP PROCESS: Project Prioritization Approach

9 III. SWRP PROCESS: Criteria Weighting Scoring Projects Based on Weighted Criteria For each of the multi-benefit criteria: Step #1: Determine the Project Score Project Score is a measure of how well a project satisfies the criteria. Step #2: Project Score x Criteria Weight = Criteria Score Step #3: Sum of all Criteria Scores = Final Project Score Final Project Score is a measure of how well a project satisfies ALL the criteria Step #4: Compare Final Project Scores of all Projects and Rank Projects

10 III.. SWRP PROCESS: Criteria Weighting Stakeholder Criteria Weighting Located in Watershed with Water Supply Impacts Water Supply Benefits DAC Benefits Located in a Watershed with Water Quality Impacts Water Quality Benefits Project Development Environmental Benefits Flood Management Benefits Project Capital Cost Community Benefits Project Readiness HIGH LOW

11 III. SWRP PROCESS: Criteria Weighting Input from Stakeholder Meeting #1 - July 13, 2017 Stakeholder Input Category Prioritization Criteria/Benefit Total Votes Criteria Weight risk Project Readiness 1 1% community benefits Community Benefits 2 3% project capital cost Project Capital Cost 3 4% flood management Flood Management 4 6% Environmental (Protection and environmental benefits Improvement) 6 9% project development 1 Project Development regional projects 6 10% water quality Water Quality 7 10% Benefit to a Disadvantaged dac benefits Community (DAC) 8 11% appropriate allocations 1 residental project location benefits water supply 3 water supply Water Supply 8 46% project location benefits water supply 10 groundwater recharge 10 Total %

12 III. SWRP PROCESS: Prioritization of Example Project Ex Project 1: Root Creek Avenue 10 Intentional Recharge Project Divert stormwater from a new development to a 40 ac recharge area. Att Figure 1-1

13 III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Prioritization Inputs Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) 1 Spatial Prioritization Analysis Water Quality Impacts 2 Water Supply Impacts Is the project located in, and/or directly benefit a subwatershed with identified water quality impacts? Is the project located in, and/or directly benefit a subwatershed with identified water supply impacts? Yes/No Yes/No From Watershed Modeling Analysis 31% Flood Impacts Potential Flooded Area Acres County of Madera Boundary HUC12 watersheds County of Madera Boundary HUC12 watersheds County of Madera Boundary HUC12 watersheds

14 III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed a. Support compliance with applicable permit and/or TMDL requirements Yes/No 3 3 b. Increase the filtration and/or treatment of Water Quality runoff Volume Treated 5% 0.25 c. Provide nonpoint source pollution control Pollutant Load Reduction 2 0 d. Re-establish natural water drainage and Watershed treatment Volume Treated Based Modeling a. Water supply reliability Water Supply b. Water conservation Volume Added or Saved % 1.37 c. Conjunctive use 3 3 a. Decrease flood risk by reducing runoff Flood Management rate and/or volume Volume Decreased 3% 0.20 b. Reduce sanitary sewer 3 0

15 III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number 7 8 Project Task Criteria/Benefit Criteria Description Unit of Measurement Project Solicitation Environmental (Protection and Improvement) Benefit to a Disadvantaged Community (DAC) 9 Project Capital Cost a. Provide environmental and habitat protection improvement, via i. Wetland enhancement/creation; ii. Riparian enhancement; and/or iii. Instream flow improvement b. Reduce energy use, greenhouse gas emissions, or provide carbon sink Yes/No, Size and/or Rate Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) 9% 0.34 c. Reestablish the natural hydrograph 3 0 d. Increase urban green space 1 0 e. Improve water temperature 1 0 Is the project located in, and/or directly benefit a DAC? Yes/No and Size % 1.14 Compares the estimated capital cost for each project, with the most expensive alternatives Dollars % 0.21 ranking less favorably.

16 III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) a. Employment opportunities Community Benefits b. Community Involvement Size and/or # c. Public education % 0.04 d. Enhance and/or create recreational and public use areas a. Project Developed Using a Metrics Driven 5 5 Approach? 11 Project Development Yes/No and % 10% 0.50 b. Does the project provide Regional Project 5 3 Benefits? Solicitation a. Is the project ready to implement? 2 0 b. Is the project cost well defined? 2 1 c. Is the land currently owned by a public agency or does it need to be acquired? Project Readiness d. Is the environmental permitting process Yes/No and/or % 1% complete or not yet started? e. Does the lead agency have funds available to satisfy the 50% local funding match? 2 2 Sum of all Criteria Project Scores = 6.84/10

17 I. SWRP PROCESS: Project Prioritization Approach Initial Projects Assessment

18 LID I I. S W R P P R O C E S S : Questions or Comments? Overview building How can we transform the roof? nt ready opportunities for harvesting from roofs through small-scale embedded facilities are one aspect of smart building optimize feedback between environment hieve net energy production, or regenerative us sustainable development, which is carbon ties are chosen according to the level of desired. The simplest service is groundwater of stormwater runoff. Gutters and leaders water create concentrated discharges and or of devices that slow, spread, and soak ut the site. A higher level of service involves en roofs, which absorb and evaporate a cultivated plant and soil community. Green building insulators, minimizing heating and Green walls minimize solar gain during the summer and wind loading during the winter. ing offers three basic levels of service, cisterns with options for treatment. The s rainwater reuse for outdoor landscape complex harvesting service incorporates a supply with additional treatment for nons like toilet flushing and landscape irrigation. of service involves harvesting for potable which requires UV light disinfection for a em, and when combined with water from a utility includes proper back-flow prevention. evapotranspiration biodiversity How can we transform the walls? retention filtration treatment infiltration storage How can we transform the ground? infiltration D facilities on a building site should be ed. Infiltration and treatment facilities can building to capture roof runoff. Infiltration should be located at least 10 feet away they may cause the shrinking and swelling ls, which can negatively affect foundations. Input at: M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 County of Madera Fall Creek Engineer ing Sierra Watershed Progressive 2 N D N AT U R E ( 2 N )

19 I I I. S W R P P R O C E S S : Development of New Project Concepts Approach for Soliciting & Developing New Projects - Project Solicitation Form (deadline extended to 9/15) - Technical Assistance to Develop Project Concepts offered to local Stakeholders: - Madera Irrigation District, Chowchilla Irrigation District, City of Chowchilla, Gravelly Ford Water District, Self Help Enterprises, Root Creek Water District, Community of Fairmead - Posting informational flyers in Madera Tribune & Ranchos Ind. M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 County of Madera Fall Creek Engineer ing Sierra Watershed Progressive 2 N D N AT U R E ( 2 N )

20 I I I. S W R P P R O C E S S : Development of New Project Concepts Approach for Soliciting & Developing New Projects, cont d - Review of 2011 Local Hazard Mitigation Plan Project List: - City of Madera: Provide stormwater drainage improvements to reduce frequent flooding, such as downtown stormwater drains, basins, trunk lines, auxiliary pipes, and interconnections. - City of Chowchilla: Provide stormwater drainage improvements to reduce frequent flooding, such as City downtown stormwater drains, basins (Truman Pond), trunk lines, auxiliary pipes, and interconnections. M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 County of Madera Fall Creek Engineer ing Sierra Watershed Progressive 2 N D N AT U R E ( 2 N )

21 III. SWRP PROCESS: Development of New Project Concepts Approach for Soliciting & Developing New Projects, cont d - Review of 2014 Integrated Regional Water Management Plan: - City of Madera: Fresno River Consolidated Stormwater Quality Enhancement Project? City of Madera / MID Schmidt Creek Recharge and Flood Control Project? - City of Chowchilla: Regulating/Recharge Basins in CWD by joint use of City of Chowchilla Basins? - Madera Ranchos: North & South Detention Basins

22 III. SWRP PROCESS: Development of New Project Concepts Approach for Soliciting & Developing New Projects, cont d - Identification of New Project Concepts on City owned Parcels - Publicly Owned Parcels (e.g., Chowchilla, Firebaugh, Madera) > 1 Acre - Where particulate generation > T/ac/y or Runoff > 0.23 AF/ac/yr - Site Visits to Evaluate Opportunities - Urban Green Infrastructure (LID) Retrofits - Demonstration Projects with High Public Visibility flow control detention retention filtration infiltration treatment slow spread soak

23 IV. SWRP PROCESS: Questions or Comments? Do you have specific suggestions for new Storm Water project locations in Madera County? Do you have recommendations for our Project Team about how we should identify new project locations and/or project proponents? Input at:

24 V I I. S W R P P R O C E S S : Schedule»»»»» July - Sept. 2017: Call for Projects! August - Sept.2017: Project Concept Development & Project Prioritization (TAC Meeting #2 Today) October 2017: Draft SWRP ready for public review and comment (TAC Meeting #3: Review of new project concepts, draft final prioritization of all projects, and delivery of the Draft SWRP document for review and comment) November 2017: Public & Stakeholder Meeting #2 (TAC Meeting #4) December 2017: Final SWRP M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 County of Madera Fall Creek Engineer ing Sierra Watershed Progressive 2 N D N AT U R E ( 2 N )

25 VIII. SWRP PROCESS: Next Steps» SOLICIT project information from Stakeholders and Community Members via Project Solicitation Form VISIT: Submit forms by September 15, 2017 (Deadline Extended from 8/21/17)» Identify and develop NEW project concepts for inclusion in the SWRP» Present project prioritization results and draft SWRP October 2017 Please direct any questions about the SWRP to Dario Dominguez at