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Home My WebLink AboutPackets - Stormwater Utillity Commission (206) AGENDA STORMWATER UTILITY COMMISSION REGULAR SESSION FEBRUARY 19, 2026 HOPI CONFERENCE ROOM 11000 N. LA CAÑADA DRIVE REGULAR SESSION AT OR AFTER 4:00 PM CALL TO ORDER ROLL CALL CALL TO AUDIENCE - at this time, any member of the public is allowed to address the Commission on any issue not listed on today’s agenda. Pursuant to the Arizona open meeting law, individual Commission members may ask Town staff to review the matter, ask that the matter be placed on a future agenda, or respond to criticism made by speakers. However, the Commission may not discuss or take legal action on matters raised during "Call to Audience." In order to speak during "Call to Audience", please specify what you wish to discuss when completing the blue speaker card. COUNCIL LIAISON COMMENTS (INFORMATIONAL ONLY) DIRECTORS REPORT (INFORMATIONAL ONLY) REGULAR SESSION AGENDA 1.REVIEW AND APPROVAL OF THE OCTOBER 14, 2025 AND JANUARY 15, 2026 MEETING MINUTES 2.DISCUSSION OF MEETINGS AND EVENTS 3.DISCUSSION AND PRESENTATION ON THE ARIZONA DEPARTMENT OF ENVIRONMENTAL QUALITY (ADEQ) 2025 CONSTRUCTION GENERAL PERMIT (CGP) AND ITS IMPLICATIONS FOR THE TOWN OF ORO VALLEY’S STORMWATER UTILITY PROGRAM, DEVELOPMENT COMMUNITY, AND INTERNAL MUNICIPAL PROCESSES 4.DISCUSSION AND PRESENTATION ON A STATUS REPORT ON PRIORITIZATION OF STORMWATER PROJECTS WITHIN PUBLIC WORKS ADJOURNMENT POSTED: 2/11/26 at 5:00 p.m. by ck POSTED: 2/11/26 at 5:00 p.m. by ck When possible, a packet of agenda materials as listed above is available for public inspection at least 24 hours prior to the Commission meeting in the Town Clerk's Office between the hours of 8:00 a.m. – 5:00 p.m. The Town of Oro Valley complies with the Americans with Disabilities Act (ADA). If any person with a disability needs any type of accommodation, please notify the Town Clerk’s Office at least five days prior to the Commission meeting at 229-4700. INSTRUCTIONS TO SPEAKERS Members of the public have the right to speak during any posted public hearing. However, those items not listed as a public hearing are for consideration and action by the Commission during the course of their business meeting. Members of the public may be allowed to speak on these topics at the discretion of the Chair. If you wish to address the Commission on any item(s) on this agenda, please complete a blue speaker card located on the Agenda table at the back of the room and give it to the Recording Secretary. Please indicate on the speaker card which item number and topic you wish to speak on, or if you wish to speak during “Call to Audience,” please specify what you wish to discuss when completing the blue speaker card. Please step forward to the podium when the Chair announces the item(s) on the agenda which you are interested in addressing. 1. For the record, please state your name and whether or not you are a Town resident. 2. Speak only on the issue currently being discussed by the Commission. Please organize your speech, you will only be allowed to address the Commission once regarding the topic being discussed. 3. Please limit your comments to 3 minutes. 4. During “Call to Audience”, you may address the Commission on any issue you wish. 5. Any member of the public speaking must speak in a courteous and respectful manner to those present. Thank you for your cooperation. “Notice of Possible Quorum of the Oro Valley Town Council, Boards, Commissions and Committees: In accordance with Chapter 3, Title 38, Arizona Revised Statutes and Section 2-4-4 of the Oro Valley Town Code, a majority of the Town Council, Board of Adjustment, Historic Preservation Commission, Parks and Recreation Advisory Board, Stormwater Utility Commission, and Water Utility Commission may attend the above referenced meeting as a member of the audience only.” Stormwater Utility Commission 1. Meeting Date:02/19/2026 Requested by: Dennis Roberts, Public Works Submitted By:Yarina Hynd, Public Works SUBJECT: REVIEW AND APPROVAL OF THE OCTOBER 14, 2025 AND JANUARY 15, 2026 MEETING MINUTES RECOMMENDATION: Staff recommends approval. EXECUTIVE SUMMARY: N/A BACKGROUND OR DETAILED INFORMATION: N/A FISCAL IMPACT: N/A SUGGESTED MOTION: I MOVE to approve (approve with changes), the October 14, 2025 meeting minutes. I MOVE to approve (approve with changes), the January 15, 2026 meeting minutes. Attachments 10-14-25 Draft Minutes 01-15-26 Draft Minutes D R A F T MINUTES STORMWATER UTILITY COMMISSION SPECIAL SESSION OCTOBER 14, 2025 HOPI CONFERENCE ROOM 11000 N. LA CAÑADA DRIVE SPECIAL SESSION AT OR AFTER 4:00 PM CALL TO ORDER The meeting was called to order at 4:00 P.M. ROLL CALL Present: Robert Aguayo, Commissioner Robert Schlicher, Commissioner Richard Crocker, Chair Staff Present: Paul Keesler, Public Works Director - Town Engineer Dennis Roberts, Stormwater Division Manager Commissioner Schlicher attended via telephone. Council Liaison Harry Greene was excused. SPECIAL SESSION AGENDA 1.DISCUSSION AND POSSIBLE ACTION REGARDING RECONSIDERATION OF RECOMMENDED STORMWATER UTILITY RATE INCREASE TO MAYOR AND COUNCIL FOR FISCAL YEAR 2025/26 Stormwater Utility Division Manager Dennis Roberts provided a presentation that included the following: - Stormwater Utility proposed Fee Increase - Existing Rate vs. Proposed Rate - Rate Increase Drivers & Timeline - Rate Increase Summary - Implementation of Rate Increase Discussion ensued among the Commission and Staff. Motion by Commissioner Robert Aguayo, seconded by Chair Richard Crocker to approve a recommendation to the Mayor and Council to support a Stormwater Utility base rate increase following a multi-year fee schedule, effective beginning with the fiscal year commencing July 1, 2026: 1. Fiscal Year 2027: All applicable fees shall be increased by 15% to a base rate of $5.17 beginning July 1, 2026. 2. Fiscal Year 2028: All applicable fees shall be increased by an additional 13% to a base rate of $5.84 beginning July 1, 2027. 10/14/25 Minutes, Stormwater Utility Commission Special Session 1 3. Fiscal Year 2029: All applicable fees shall be increased by an additional 11% to a base rate of $6.50 beginning July 1, 2028. Vote: 3 - 0 Carried 2.PRESENTATION AND UPDATE ON THE COMMUNITY COMMENT (60%) DRAFT OF THE COMMUNITY'S NEXT 10-YEAR ACTION PLAN, KNOWN AS OV'S PATH FORWARD Community and Economic Development Planner Rene Olvera provided a presentation that included the following: - Introduction - OV's Path Forward — Phase 2 Let's Think - 10-year action plan - Going from 30% to 60% Draft — Clarifying and broadening actions - Community Comment (60%) Draft Plan — What's in the plan: Plan Format — Four main chapters: Community, Sustainability, Economy, and Development Areas of Interest The Stormwater Management goals, policies, and actions - Draft Policies & Actions — Sustainability Chapter Goal M: Stormwater Management Promote the conservation of natural resources through thoughtful design, sustainable construction practices, and proactive management strategies. Policy M.1. Integrate green infrastructure to effectively capture and manage stormwater in a way that prioritizes groundwater recharge, enhances recreational opportunities, and supports the preservation of wildlife habitats. 118. Review and update the Drainage Criteria Manual and related standards to incorporate best practices, new research, and regulatory updates. - The BIG Community Review: From September 22nd to October 31st! — Spreading the Word - Next Steps — The top priority is creating a draft plan that honors the direction provided by residents in Phase 1. ADJOURNMENT Motion by Chair Richard Crocker, seconded by Commissioner Robert Aguayo to adjourn the meeting. Vote: 3 - 0 Carried The meeting was adjourned at 4:27 p.m. I hereby certify that the foregoing minutes are a true and correct copy of the minutes of the regular session of the Town of Oro Valley Stormwater Utility Commission of Oro Valley, Arizona held on the 14th day of October 2025. I further certify that the meeting was duly called and held and that a quorum was present. ___________________________ Yarina Hynd Senior Office Specialist 10/14/25 Minutes, Stormwater Utility Commission Special Session 2 D R A F T MINUTES STORMWATER UTILITY COMMISSION REGULAR SESSION JANUARY 15, 2026 HOPI CONFERENCE ROOM 11000 N. LA CAÑADA DRIVE REGULAR SESSION AT OR AFTER 4:02 PM CALL TO ORDER The meeting was called to order at 4:00 p.m. ROLL CALL Present: Robert Aguayo, Commissioner David Atler, Commissioner Gary Mattson, Commissioner John McCauley, Commissioner Absent: Tom Marek, Commissioner Staff Present: Paul Keesler, Public Works Director - Town Engineer Dennis Roberts, Stormwater Division Manager John Lynch, Stormwater Project Manager Mike Ortiz, Senior Engineering Associate Scott Bennett, GIS Analyst Attendees: Harry Greene, Council Liaison Commissioner Tom Marek was excused. Paul Keesler was excused at 4:15 p.m. CALL TO AUDIENCE There were no speaker requests. COUNCIL LIAISON COMMENTS (INFORMATIONAL ONLY) Council Liaison Harry Greene provided an update regarding the Town Council's vote at the January 14, 2026 Public Hearing to authorize and approve the Stormwater Utility Base Rate Increase over a three-year period. DIRECTORS REPORT (INFORMATIONAL ONLY) DIRECTORS REPORT (INFORMATIONAL ONLY) Stormwater Division Manager Dennis Roberts commented on the following: Purpose of the Director's Report Welcome and Commission's Role Acknowledgment of Outgoing Commissioners Introduction of the Stormwater Utility Team Department Update At the January 14, 2026, Town Council Meeting, the Mayor and Council approved a three-year incremental increase to the Stormwater Utility base rate. REGULAR SESSION AGENDA 1.REVIEW AND APPROVAL OF THE MAY 15, 2025 MEETING MINUTES Motion by Commissioner Robert Aguayo, seconded by Commissioner John McCauley to approve the meeting minutes as written. Vote: 4 - 0 Carried 2.DISCUSSION OF MEETINGS AND EVENTS Mr. Roberts discussed recent meetings and events. 3.PRESENTATION AND DISCUSSION OF AN OVERVIEW OF THE STORMWATER UTILITY Mr. Roberts provided a presentation that included the following: - Stormwater Utility Overview: Purpose, Responsibilities & Challenges - Welcome & Purpose of Today's Presentation - What is the Stormwater Utility? - Why Stormwater Management Matters - Regulatory Framework - MS4 Permit: Six Minimum Control Measures - Stormwater Utility Fund (Town Code 15-24-13) - What We Do: Core Responsibilities Operations & Maintenance Regulatory Compliance - What We Do: Core Responsibilities Planning & Capital Projects Customer Service & Public Engagement - Challenges Facing the Utility - Examples of Typical Stormwater Utility - How the Utility Interacts with the Commission - Looking Ahead - Transition to Next Presentation Presentation and Discussion of the Oro Valley Stormwater Utility Fee Structure - Questions Discussion ensued among the Commissioners and Staff regarding the clarification of detention and retention basins. 4.PRESENTATION AND DISCUSSION OF THE ORO VALLEY STORMWATER UTILITY FEE STRUCTURE Mr. Roberts provided a presentation that included the following: - Purpose of Today's Discussion - Why a Fee Structure? - Fee History and Current Fee - Fee Calculation Example - Fee Calculation Example - Stormwater Active Accounts - Rate Review & NOI Process - Why Consider an Increase? - Current Status - Next Steps - Discussion Questions Discussion ensued among the Commissioners and Staff regarding The Commission asked for confirmation of the breakdown of the increased rate for residential and commercial properties from $4.50 monthly (25/26 fy) to $6.50 monthly (28/29 fy). Mr. Roberts confirmed that statement is correct. The Commission asked for clarification of whether the Stormwater Utility Budget is under the Public Works Budget. Mr. Roberts stated that the Stormwater Utility is an enterprise and is not included in the Public Works Budget. The revenue for the Stormwater Utility is generated from the Stormwater Utility Fee. The Commission would like to know what this year's Stormwater Utility Budget is compared to what it will be at the end of the 3 years of rate increase? Mr. Roberts responded that he would bring those financial figures to the next meeting. The Commission is interested in hearing about future projects. Mr. Roberts stated that he will introduce projects at the next Stormwater Utility Commission meeting. 5.DISCUSSION OF 2025/2026 TOWN OF ORO VALLEY MS4 COMPLIANCE SCHEDULE, SECOND QUARTER REPORT Mr. Roberts reported on the Second Quarter, from October 1 through December 31, 2025, of the Town's 2025/2026 MS4 Compliance Schedule. Purpose of the Report - To keep stakeholders informed about the status of our Stormwater Management Program. Regulatory Context - The Town operates under the Arizona Pollutant Discharge Elimination System (AZPDES) permit for small Municipal Separate Storm Sewer Systems (MS4). Minimum Control Measures - The Permit requires us to implement six Minimum Control Measures Public Education and Outreach Public Participation and Involvement Illicit Discharge Detection and Elimination (IDDE) Construction Site Runoff Control Post Construction Runoff Control Pollution Prevention and Good Housekeeping for Municipal Operations Second Quarter Status - The Stormwater Utility Team tracks 33 targeted responsibilities under these measures. - The attached summary table shows that the SWUC is up-to-date and has met their goals this quarter. The Commission asked for clarification as to the definition of CIP. Staff responded CIP stands for Capital Improvement Program. 6.DISCUSSION REGARDING THE STORMWATER UTILITY COMMISSION REGULAR SESSION MEETING SCHEDULE FOR CALENDAR YEAR 2026 Mr. Roberts reported on the Stormwater Utility 2026 scheduled meeting dates. Discussion ensued regarding the 2026 meeting dates. Questions brought up concerning the scheduled meeting dates: A question regarding the dates on the schedule with no agenda topics. Mr. Roberts clarified that the agendas for those months have not been determined at this time. A question regarding the Field Trip Update and Discussion that was noted on the schedule for the March meeting. Will the date of the field trip be discussed at the March 19th meeting or is the field trip scheduled for the date of the April 16th meeting? Mr. Roberts explained that the field trip can be discussed as part of the agenda at the March 19th meeting and that in order to have full attendance the date of the field trip would also be discussed. Mr. Roberts clarified that at this time, the April 16th date was scheduled as the date for the field trip. 7.NOMINATION AND ELECTION OF STORMWATER UTILITY COMMISSION CHAIR EFFECTIVE IMMEDIATELY Discussion ensued among the Commissioners. Motion by Commissioner Robert Aguayo, seconded by Commissioner John McCauley to elect Gary Mattson as Stormwater Utility Commission Chair. Vote: 4 - 0 Carried 8.NOMINATION AND ELECTION OF STORMWATER UTILITY COMMISSION VICE CHAIR EFFECTIVE IMMEDIATELY Motion by Commissioner David Atler, seconded by Commissioner John McCauley to elect Robert Aguayo as Stormwater Utility Commission Vice Chair. Vote: 4 - 0 Carried ADJOURNMENT Motion by Commissioner John McCauley, seconded by Commissioner David Atler to adjourn the meeting. Vote: 4 - 0 Carried The meeting was adjourned at 5:04 p.m. I hereby certify that the foregoing minutes are a true and correct copy of the minutes of the regular session of the Town of Oro Valley Stormwater Utility Commission of Oro Valley, Arizona held on the 15th day of January 2026. I further certify that the meeting was duly called and held and that a quorum was present. ___________________________ Yarina Hynd Senior Office Specialist Stormwater Utility Commission 2. Meeting Date:02/19/2026 Requested by: Dennis Roberts, Public Works Submitted By:Dennis Roberts, Public Works SUBJECT: DISCUSSION OF MEETINGS AND EVENTS RECOMMENDATION: N/A EXECUTIVE SUMMARY: Since the Stormwater Utility Commission’s last regular meeting on January 15, 2026, several stormwater related regional meetings have occurred. These meetings provided updates on flood control activities, watershed planning, and interagency coordination. The following events took place during this period or are future upcoming meetings: January 21, 2026 - Regional Flood Control Advisory Committee Meeting February 5, 2026 - PAG Environmental Planning Advisory Committee (EPAC) Meeting February 18, 2026 - Regional Flood Control Advisory Committee Meeting February 19, 2026 - Stormwater Utility Commission Meeting March 18, 2026 - Regional Flood Control Advisory Committee Meeting BACKGROUND OR DETAILED INFORMATION: N/A FISCAL IMPACT: N/A SUGGESTED MOTION: N/A Stormwater Utility Commission 3. Meeting Date:02/19/2026 Submitted By:Dennis Roberts, Public Works SUBJECT: DISCUSSION AND PRESENTATION ON THE ARIZONA DEPARTMENT OF ENVIRONMENTAL QUALITY (ADEQ) 2025 CONSTRUCTION GENERAL PERMIT (CGP) AND ITS IMPLICATIONS FOR THE TOWN OF ORO VALLEY’S STORMWATER UTILITY PROGRAM, DEVELOPMENT COMMUNITY, AND INTERNAL MUNICIPAL PROCESSES RECOMMENDATION: This report is for discussion and feedback purposes only. EXECUTIVE SUMMARY: ADEQ has issued the 2025 Construction General Permit (CGP), replacing the 2020 permit and updating requirements for construction activities that disturb one acre or more or are part of a larger common plan of development. As a regulated Municipal Separate Storm Sewer System (MS4), the Town of Oro Valley is federally obligated under the Clean Water Act to ensure that construction activities within its jurisdiction comply with the CGP. The 2025 CGP introduces updated standards for erosion and sediment control, pollution prevention, dewatering, inspections, and Stormwater Pollution Prevention Plan (SWPPP) development and maintenance. It also clarifies permit coverage criteria, expands requirements for support activities, and aligns more closely with the EPA federal CGP. This agenda item provides an overview of the changes, outlines the Town’s responsibilities, and identifies the steps needed to update internal procedures and support the regulated community. BACKGROUND OR DETAILED INFORMATION: Regulatory Context The Town of Oro Valley operates under an ADEQ-issued MS4 permit, which requires the Town to enforce the Construction General Permit for qualifying construction activities. The 2025 CGP became effective in late 2024 and applies to all covered construction activities beginning in 2025. Permit coverage applies only when a project both: disturbs one acre or more (or is part of a larger common plan), and discharges to a Water of the United States (WOTUS) or an MS4 that leads to WOTUS. The 2025 CGP aligns closely with the EPA federal CGP, including requirements for SWPPPs, BMPs, inspections, and corrective actions. ADEQ received significant public input during the CGP update process, signaling strong stakeholder interest and the potential for future refinements. Key Changes in the 2025 CGP 1. Permit Submittal & Coverage Notice of Intent (NOI) remains the standard authorization mechanism. No Discharge Certificate (NDC) is available only for sites capable of retaining the full 100-year, 2-hour storm without discharge, conditions uncommon in Oro Valley. SWPPPs are required for all CGP-covered sites but are not submitted to ADEQ; they must be kept on-site or electronically accessible. Projects that discharge to impaired waters or Outstanding Arizona Waters (OAWs) must implement additional BMPs and meet enhanced requirements. The 2025 CGP does not include proximity-based triggers (e.g., ¼-mile buffers). Enhanced requirements apply only when a project directly discharges to an impaired water or OAW. Support activities such as temporary concrete or asphalt plants serving a permitted project are explicitly covered under the CGP. 2. Erosion & Sediment Control New requirements for slopes ≥15%. Expanded BMP options, including hydraulic mulch, geotextiles, compost blankets, and velocity dissipation devices. Stockpile setbacks: 50 feet from drainage features, stormwater conveyances, and streets draining to conveyances. Updated stabilization timelines, including non-vegetative stabilization within 14 days during dry or unforeseen conditions. 3. Pollution Prevention Concrete washout: leak-proof containment, 50-foot setbacks, and proper disposal. Chemical storage: spill kits, secondary containment, and 50-foot setbacks. Waste handling: closed lids, secondary containment for lidless containers, and placement outside drainage features. Requirements mirror EPA’s pollution-prevention standards. 4. Dewatering Requirements Dewatering discharges are prohibited unless treated through approved sediment-removal systems. Hydrocarbon sheen must be removed through filtration. Chlorine must be reduced to <4 mg/L. Only low-flow discharges are allowed. Requirements align with EPA’s dewatering and non-stormwater discharge provisions. Emerging contaminants such as PFAS are not yet regulated under the CGP but are increasingly relevant for dewatering oversight. 5. Inspection Protocols Standard schedule: every 14 days and within 24 hours of a 0.5-inch rainfall event. Arid/frozen schedule: monthly and within 24 hours of a 0.25-inch rainfall event. Expanded inspection scope includes flow paths, deposition areas, and identification of non-compliance. Requirements are consistent with EPA’s federal CGP structure. 6. Stormwater Team & Training SWPPPs must list stormwater team members, qualifications, and training records. Training must cover BMPs, stabilization, pollution prevention, inspections, and corrective actions. This aligns with EPA’s emphasis on qualified personnel and documented training. 7. SWPPP Review Updates SWPPPs must incorporate new requirements related to slopes, stockpiles, washouts, dewatering, and stormwater team qualifications. SWPPPs must be updated whenever site conditions or BMPs change, consistent with EPA’s SWPPP maintenance requirements. Additional Regulatory Considerations The Town has verified that the Santa Cruz River is the nearest qualifying receiving water under current federal definitions of Waters of the U.S. (WOTUS), following recent rule changes affecting ephemeral desert washes. EPA is proposing updates to federal stormwater permits for 2025–2026, which may influence future ADEQ permit cycles. Local erosion control standards, enforcement procedures, or municipal code provisions may require updates to align with the 2025 CGP. Town Responsibilities To comply with the 2025 CGP and MS4 obligations, the Town must: Update internal Standard Operating Procedures (SOPs) for SWPPP review, inspections, and documentation. Communicate regulatory changes to developers, engineers, and contractors. Provide training and technical assistance to Town departments responsible for capital projects. Evaluate whether local ordinances or technical standards require updates. Implement changes immediately, as the 2025 CGP is already in effect. FISCAL IMPACT: The 2025 CGP does not impose direct fees on the Town; however, compliance may require: Additional staff time for updated reviews, inspections, and documentation. Training costs for stormwater team members. Potential increases in enforcement or corrective action oversight. Minor administrative costs for updated forms, SOPs, and outreach materials. No significant capital expenditures are anticipated. SUGGESTED MOTION: This report is for discussion and feedback purposes only no action is required. Attachments 2025_CGP Update Presentation 2025 Construction General Permit (CGP) Key Changes from 2020 CGP & Local Implementation Town of Oro Valley Stormwater Utility February 19, 2026 Why does the 2025 CGP Matter? • The Town is federally and state-mandated to enforce the 2025 CGP under EPA and ADEQ regulations. • Updated requirements strengthen protections for water quality and reduce construction-related pollution. • Compliance is required for all qualifying construction activities within Oro Valley. Who is Affected? Construction activities disturbing ≥1 acre or part of a common plan of development • Developers • Construction Site Operators • Engineers & Plan Reviewers • Municipal Capital Project Teams • Inspectors & Compliance Personnel What Changed in the 2025 CGP? • Permit submittal & coverage criteria • Erosion & sediment control requirements • Pollution prevention (P2) standards • Dewatering requirements • Inspection protocols • Stormwater team qualifications & training • SWPPP content and maintenance requirements Permit Submittal & Coverage Permit Types •Notice of Intent (NOI): Required for most sites •No Discharge Certificate (NDC): Only for sites retaining the full 100-year, 2-hour storm – rare in Oro Valley Coverage Criteria A project requires CGP coverage only if it: 1. Disturbed ≥ 1 acre (or part of a common plan, and 2. Discharge to a WOTUS or an MS4 that drains to a WOTUS Local Note: • The Santa Cruz River is the nearest qualifying WOTUS under current federal definitions. SWPPP Requirements • Required for all CGP-covered sites. • Must be kept onsite or electronically accessible. • Must reflect actual site conditions and be updated as conditions change. • Must include stormwater team qualifications and training records. • ADEQ no longer uses proximity-based triggers (e.g., ¼-mile rule). • The Town may require a SWPPP for projects near sensitive washes. Erosion & Sediment Control: Steep Slopes Slopes ≥ 15% require enhanced BMPs: • Preserve existing vegetation • Hydraulic mulch • Geotextiles or mats • Compost blankets • Earth dikes or drainage swales • Terraces & velocity dissipation devices Erosion & Sediment Control: Stockpiles Stockpiles must be ≥50 feet from: • Protected surface waters • Stormwater conveyances • Streets draining to conveyances Additional Requirements: • Stabilize or cover when inactive • Protect from wind and stormwater erosion Stabilization Requirements Stabilization Timelines: • Non-vegetative stabilization: Within 14 days of temporary or permanent cessation. • Vegetative stabilization: As soon as practicable. • Documentation required for delays due to drought or unforeseen conditions. Pollution Prevention (P2) Requirements Concrete Washout • Leak-proof containment with freeboard • ≥50-ft from drainage features Chemical Storage • Spill kit onsite • Secondary containment • ≥50-ft setback from drainage features Waste Handling • Keep lids closed • Secondary containment for lidless containers • Keep outside drainage paths and conveyances Dewatering Requirements Discharges prohibited unless treated through: • Sediment basins or traps • Dewatering tanks • Tube settlers or weir tanks • Filtration systems • Chemical treatment (if needed) Additional Requirements • Hydrocarbon sheen removal • No floating solids or foam • Chlorine ≤4 mg/L • Only low-flow discharges allowed Emerging Issues • PFAS not yet regulated but increasingly relevant for dewatering oversight. Inspection Protocols Standard Schedule: • Every 14 days • Within 24 hours of ≥0.5” rainfall Arid/Frozen Schedule: • Monthly • Within 24 hours of ≥0.25” rainfall • Must document arid conditions Expanded Inspection Scope: • Unstabilized Areas • All stormwater flow paths • Sediment deposition areas • Identification of non-compliance Stormwater Team Requirements Roles Include: • BMP design, installation, and maintenance • Chemical handling • Inspections • Corrective Actions • Documentation SWPPP Must Include: • Names, titles, qualifications • Training certificates Training Must Cover: • Permit requirements • BMP installation & maintenance • Pollution prevention • Inspection procedures • Corrective action processes SWPPP Review Updates SWPPPs must now include: • NOI confirmation • Steep slope BMPs (≥15%) • Stockpile 50-ft setbacks • Concrete washout 50-ft setbacks • Stormwater team qualifications • Updated site maps and BMP locations • Procedures for SWPPP updates Local Relevance •14 active construction sites in Oro Valley currently under the CGP • Most common compliance issues: • Track-out • Concrete washout mismanagement • Waste disposal • Town inspections must now reflect updated CGP requirements Next Steps & Department Responsibilities •SOP Updates • Integrate new CGP requirements into SWPPP review, inspection, and documentation procedures •Interdepartmental Coordination • Capital projects and development review teams should coordinate with Storm •Implementation Timeline • The 2025 CGP is already in effect. • Updated procedures must be implemented immediately. Future Training Opportunities •Planned workshop • In-depth SWPPP review training • Inspection protocol deep dive • BMP selection and field application Questions & Discussion 1. Which new CGP requirements will be most challenging locally? 2. What support or training does the development community need? 3. Where should the Town prioritize SOP updates? 4. How can departments better coordinate on SWPPP reviews and inspections? 5. Are there local washes or sensitive areas where we should consider requiring SWPPPs even when ADEQ does not? 6. What enforcement challenges should we anticipate with the new requirements? Contact Information Dennis Roberts – Division Manager 520-229-5044 Mike Ortiz – Senior Engineer Associate/SWPPP Reviewer 520-229-4818 Scott Bennett – Stormwater GIS Analyst 520-229-4879 Jane Hutchins – Stormwater Utility Inspector 520-373-4729 Stormwater Utility Commission 4. Meeting Date:02/19/2026 Requested by: Dennis Roberts, Public Works Submitted By:Dennis Roberts, Public Works SUBJECT: DISCUSSION AND PRESENTATION ON A STATUS REPORT ON PRIORITIZATION OF STORMWATER PROJECTS WITHIN PUBLIC WORKS RECOMMENDATION: For information purposes only. EXECUTIVE SUMMARY: The Stormwater Utility Division is actively developing a comprehensive prioritization framework for drainage improvement projects. This process includes conceptual planning, cost estimation, and evaluation based on key criteria: safety, value, cost, scope, and time. A GIS-based interactive map has been created to visualize all identified projects, providing location details, photos, and preliminary cost estimates. The prioritization tool will help rank projects objectively and align them with strategic goals, grant opportunities, and regional partnerships. This effort is ongoing, and staff will return with finalized rankings and recommendations for implementation. BACKGROUND OR DETAILED INFORMATION: The Stormwater Utility Division has identified multiple drainage improvement projects across the Town. To ensure resources are allocated effectively, staff is implementing a prioritization process based on the following criteria: Safety: Addresses hazards and risks to life, property, and infrastructure. Value: Long-term benefits, alignment with Town goals, and co-benefits. Cost: Estimated project cost, funding opportunities, and scalability. Scope: Technical feasibility, coordination needs, and constraints. Time: Urgency, scheduling, and regulatory considerations. Strategic Alignment: Regional collaboration and grant competitiveness. A GIS-based map has been developed to support this process. Each project includes: Location and aerial map Photos of drainage issues Project description and conceptual plan Preliminary cost estimate Indicators for grant opportunities and county partnerships Staff is currently refining the decision matrix and updating project data to ensure accurate scoring. This includes adding placeholders for estimated costs, symbols for grant and partnership opportunities, and standardizing naming conventions. The prioritization calculator will allow transparent and data-driven decision-making. FISCAL IMPACT: No immediate fiscal impact. Final prioritization will inform future budget allocations and potential grant applications. SUGGESTED MOTION: For informational purposes only, no action is required. Attachments Stormwater Project Prioritization Presentation Stormwater Utility Project Prioritization Update Town of Oro Valley Stormwater Utility February 19, 2026 Purpose of Update • Provide status on prioritization efforts • Explain methodology and tools • Outline next steps Why Prioritization Matters • Efficient allocation of resources • Address critical drainage issues • Align projects with community needs, strategic goals, and grant opportunities Prioritization Criteria • Safety – Public hazard reduction • Value – Long-term benefits & co-benefits • Cost – Estimates, funding opportunities • Scope – Technical feasibility & constraints • Time – Urgency & scheduling • Strategic Alignment Disclaimer: Draft Materials • The GIS map, project cards and prioritization spreadsheet shown are in draft form. • For discussion purposes only – not final • Data will be refined before public release GIS Map Overview • Interactive map of all identified projects • Features: Location & aerial map, photos, project description, conceptual plan, preliminary cost estimate • Link allow zoom-in to specific projects Enhancements in Progress • Adding cost placeholders • Indicating grant opportunities & county partnerships • Standardizing naming conventions • Improving GIS usability: dynamic project list, click-to-zoom, split-screen for map + slides Decision Matrix Development • Evaluates: Safety, Value, Cost, Scope, Time • Supports transparent, data-driven ranking • Includes diagnostic questions for each criterion Next Steps • Finalize conceptual plans & cost estimates • Complete scoring for all projects • Return with prioritized list for implementation • Explore grant funding & partnerships Summary • Prioritization process is in progress • GIS map and decision matrix are key tools • Goal: Transparent, strategic project selection Questions Thank you for your attention. I’m happy to answer any questions. 5 Safety 4 Value 3 Cost Benefit 2 Scope 1 Time Balancing these criteria can be challenging, but with careful consideration and a focus on what benefits society the most, the Town can make decisions that truly matter. The impact of a project on society should be significant. It's important to measure the benefits to the community and ensure long-term positive effects. Financial feasibility is important, but not at the expense of safety and value. Effective budgeting and resource management are key to sustainable projects. A decision matrix is way to evaluate and prioritize various projects to unemotionally and logically choose the best one. This is done by rating each project by a set of criteria. The criteria is safety, value, cost, scope, and time. Each criterion is rated on a scale of one to five, with one being the least favorable and five being the most favorable. This structured approach helps in making informed and balanced decisions. Prioritizing criteria safety, value, cost, scope, and time is crucial. Here's how I believe we should weigh these: Clear definition and management of the scope can help avoid unnecessary complications and ensure that objectives are met efficiently. This should be top priority. The well-being of citizens cannot be compromised. Any project or initiative must ensure that people are protected and safe. While timely completion is important, rushing projects should never come at the cost of thoroughness and quality. NO.OLD PROJECT NAME 1 Mutterer's Wash E El Conquistador Wy. to W Greenock Dr. 2 Sierra Wash at W Glover Rd. 3 Gravel Pit Wash at N Pomegranate Dr. 4 Carmack Wash at N Calle Buena Vista 5 Unnamed Wash at N Pistachio Ave. 6 North Ranch Wash at W Limewood Dr. 7 Shadow Mountain Estates 1 8 Shadow Mountain Estates 2 9 Shadow Mountain Estates 3 10 Shadow Mountain Estates 4 11 Shadow Mountain Estates 5 12 Shadow Mountain Estates 6 13 Shadow Mountain Estates 7 14 Shadow Mountain Estates 8 15 Dip Crossing 1 at Moore Rd 16 Dip Crossing 2 at Moore Rd 17 Dip Crossing 3 at Moore Rd 18 Dip Crossing 4 at Moore Rd 19 Dip Crossing 5 at Moore Rd 20 Dip Crossing 6 at Moore Rd 21 Culvert on Monterra Vista Dr and Highland Wash Tributary 22 Highland Wash (W Appalachian St. to W Matterhorn St.) 23 Carmack Wash at Hardy Road Between N calle Loma Linda and Northern Ave. 24 W Valle Del Oro Rd at the Oro Valley Country Club 25 North Ranch Wash at Shannon Road 26 CUL08300 at Tangerine Rd 27 Paseo Del Norte 28 Sun City Vistoso Unit 17 (1-276) 29 Unnamed Wash (W. Cactus Moon Pl. to N Lambert Ln.) 30 Catalina Ridge 31 La Canada Noise Wall 32 Calle Buena Vista Dip Crossing 1 33 Calle Buena Vista Dip Crossing 2 34 Northern Ave Dip Crossing 1 35 Northern Ave Dip Crossing 2 36 Northern Ave Dip Crossing 3 37 Northern Ave Dip Crossing 4 38 Naranja Park 1 39 Naranja Park 2 40 Naranja Park 3 41 Naranja Park 4 42 Naranja Park 5 43 La Canada golf course hole 6 44 Hole 9 El Conquistador Golf Course 45 Pusch Wash Tributary (Pusch Ridge Golf Course Hole No. 9) 46 Canada Golf Course Hole 12 47 Canada Golf Course Hole 11 48 Tangerine and Oro Valley Marketplace 49 Carmack Wash Tributary at W Linda Vista Bl 50 La Cholla Wash at W Glover Rd 51 Canada Hills Wash at W Lambert Ln 52 Rooney Wash Tributary at E Pusch View Ln 53 Storm Drain 89 at E Rancho Vistoso Blvd 54 Sierra Wash at N La Cholla Blvd 1 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 2 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 3 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 4 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 5 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 6 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 7 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 8 Rating Weighted Score Reason for Rating Safety 5 0 0 Value 4 0 0 Cost 3 0 0 Scope 2 0 0 Time 1 0 0 Total 0 9 Rating Weighted Score Reason for Rating Safety 5 0 0 Mutterer's Wash E El Conquistador Wy. to W Greenock Dr.Weighted RatingCriteria Criteria Weighted Rating North Ranch Wash at W Limewood Dr. Criteria Weighted Rating Carmack Wash at N Calle Buena Vista Criteria Weighted Rating Unnamed Wash at N Pistachio Ave. Criteria Weighted Rating Sierra Wash at W Glover Rd. Criteria Weighted Rating Gravel Pit Wash at N Pomegranate Dr. Criteria Weighted Rating Shadow Mountain Estates 3 Criteria Weighted Rating Shadow Mountain Estates 1 Criteria Weighted Rating Shadow Mountain Estates 2 CIP Project Prioritization February 19, 2026 Project Overview: The existing west slope of Mutterer’s Wash, with a height ranging from 1.5 to 2.5 feet, is insufficient to contain stormwater flows during peak events. This limitation poses a risk of overflow and erosion, particularly during monsoon season. Proposed Improvements Hydrologic Assessment: Conduct a detailed evaluation of approximately 590 linear feet of the wash to determine the required channel capacity enhancements. Slope Stabilization: Armor the west slope and elevate the east bank by 2.5 feet to improve containment and reduce erosion. Infrastructure Enhancements: •Extend the headwall at the culvert inlet by approximately 45 linear feet. •Construct a spillway to connect with the existing 36-inch storm drainpipe. Design Considerations: •Preserve the existing tree line and avoid disruption to utilities. •Integrate drainage from the adjacent pedestrian path, which currently discharges into the wash via six-inch pipes. Cost Estimate: TBD (32.392483, -110.964584) Mutterer's Wash E El Conquistador Wy. to W Greenock Dr. In partnership with Status: Active Last Revised: 12/1/25 Project Overview The outlet of the existing box culvert is experiencing downcutting and erosion, which compromises channel stability and increases long-term maintenance needs. Access to the channel is approximately 120 feet from the culvert centerline, presenting logistical challenges for construction. Proposed Improvements Channel Stabilization: Address downcutting at the culvert outlet to restore hydraulic function and prevent further erosion. Riprap & Curb Replacement: Replace damaged riprap and curb sections to reinforce channel protection. Access Considerations: Develop construction access approximately 120 feet downstream to facilitate equipment mobilization. Construction Plans: Plans are submitted to CED for permitting, ensuring readiness for implementation once funding is secured. Cost Estimate Federal Funding: $234,117 Town of Oro Valley Contribution: $78,040 Total Estimated Cost: $312,157 (32.416993, -111.007363) Sierra Wash at W Glover Rd. In partnership with Status: Active Last Revised: 12/1/25 Gravel Pit Wash at N Pomegranate Dr. Project Overview This project addresses stormwater management needs at Gravel Pit Wash near North Pomegranate Drive. The existing roadside drainage requires improvements to ensure proper flow control and erosion mitigation. Proposed Improvements Curb & Roadside Provisions: Install approximately 220 linear feet of curb and roadside drainage infrastructure. Drainage Control: Direct stormwater into a single spillway for more efficient flow management. Erosion Mitigation: Construct a drop spillway with a gabion basket to dissipate energy and reduce erosion. Grading: Perform approximately 110 linear feet of grading perpendicular to the roadway to stabilize the channel and improve flow capacity. Cost Estimate Federal Funding: $209,019 Town of Oro Valley Contribution: $69,673 Total Estimated Cost: $278,692 (32.401918, -110.980594) In partnership with Status: Active Last Revised: 12/1/25 Status: Active Last Revised: 12/1/25 Project Overview At Carmack Wash near North Calle Buena Vista, the existing dip crossing has developed approximately tinches of scour beneath and 55 feet around the concrete apron. Scour depth measures 22 inches deep towards the edge of the ROW limits.This condition compromises structural integrity and increases the risk of further erosion if not addressed promptly. Proposed Improvements Erosion Control: Implement measures to prevent future scour and maintain long-term functionality of the crossing. Drainage Management: Ensure stormwater continues to flow safely through the wash without undermining roadway infrastructure. Cost Estimate Total Estimated Cost: [Insert total once confirmed] (32.370108, -110.978640) Carmack Wash at N Calle Buena Vista Status: Active Last Revised: 12/1/25 Project Overview The Town has previously implemented improvements at this site; however, excessive sediment transport from upstream sources continues to cause frequent accumulation in the concrete channels and adjacent street. This recurring issue requires regular excavation and maintenance, increasing costs and reducing efficiency. Proposed Improvements Street Protection: Add curbing to prevent sediment from entering the roadway. This will also direct the flows more efficiently into the drop structure and culvert before allowing flow to enter the road. Without a curb, sediment fills the channels and the flows cross the road. Excavation Efficiency: Replace the existing rock-faced slope with a cutoff wall to streamline sediment removal. Source Control: Investigate and implement measures to reduce sediment transport at the upstream source, which may involve coordination with private property owners. Cost Estimate: [Insert total once confirmed] (32.400544, -110.985154) Unnamed Wash at N Pistachio Av. Status: Active Last Revised: 12/1/25 Status: Complete Last Revised: 12/1/25 Project Overview At the downstream end of three 36-inch culverts, there is significant downcutting of approximately 2–3 feet. While the upstream inlet remains in good condition, the outlet currently lacks channel or bank protection. This erosion issue threatens long-term stability and requires corrective measures. The channel width should be expanded to approximately 15 feet, transitioning to 10 feet over a downstream length of 50 feet. Proposed Improvements Channel Protection: Install stabilization measures at the culvert outlet to prevent further downcutting and erosion. Bank Reinforcement: Provide structural protection along the channel banks to maintain integrity. Channel Grading: Adjust channel width to 15 feet with transitions to 10 feet downstream over 50 feet. Field Investigation: Conduct detailed site analysis to refine design requirements and confirm appropriate protection methods. Cost Estimate Total Estimated Cost: $XX,XXX.XX (Completed) (32.427422, -111.019262) N Ranch Wash at W Limewood Dr. Status: Complete Last Revised: 12/1/25 Project Description Undersized channel through the mobile home park requires increased capacity and concrete lining. A large sediment basin has been recently installed upstream of the site at the Naranja Trails subdivision site, and the improvements for this CIP project will tie into the sediment basin. There are several steep drop structures downstream of the site. The elevation difference in the channel between the sediment basin and W Matterhorn St will be a limiting factor for the design. Proposed Improvements Increase channel capacity.Increase channel depth, reinforce banks, and line the channel with concrete through the project site. Sediment basin upstream and concrete lining will limit the amount of sediment accumulation in the new channel. Cost Estimate: Total Estimated Cost:[Insert total once confirmed] (32.402085, -110.972977) Highlands Wash W Appalachian St. to W Matterhorn St. In partnership with Status: Active Last Revised: 12/1/25