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HomeMy WebLinkAboutPackets - Stormwater Utillity Commission (179)       AGENDA STORMWATER UTILITY COMMISSION REGULAR SESSION AUGUST 18, 2022 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 JULY 21, 2022 MEETING MINUTES   2.DISCUSSION OF MEETINGS AND EVENTS   3.PRESENTATION AND DISCUSSION OF PIMA COUNTY AND THE TOWN OF ORO VALLEY WATERCOURSE MAINTENANCE INTER-GOVERNMENTAL AGREEMENT (IGA)   FUTURE AGENDA ITEMS   ADJOURNMENT   POSTED: 08/15/22 at 5:00 p.m. by dt 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:08/18/2022   Submitted By:Yarina Hynd, Public Works SUBJECT: REVIEW AND APPROVAL OF THE JULY 21, 2022 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 July 21, 2022 meeting minutes. Attachments 07-21-22 Draft Minutes  D R A F T MINUTES STORMWATER UTILITY COMMISSION REGULAR SESSION July 21, 2022 HOPI CONFERENCE ROOM 11000 N. LA CAÑADA DRIVE            REGULAR SESSION AT OR AFTER 4:00 PM   CALL TO ORDER Chair Cuffari called the meeting to order at 4:01 p.m.   ROLL CALL Present: Richard Crocker, Vice Chair Gary Mattson, Commissioner William Thomas, Commissioner Joseph Cuffari, Chair Absent: David Parker, Commissioner Staff Present:John Spiker, Stormwater Utility Division Manager Attendees: Harry Greene, Town Council Liaison  Commissioner Thomas attended via telephone.   CALL TO AUDIENCE There were no speaker requests.   COUNCIL LIAISON COMMENTS (INFORMATIONAL ONLY) Council Liaison Harry Greene stated that the Town Council expressed interest in hearing the monsoon preparedness report in the future.   DIRECTORS REPORT (INFORMATIONAL ONLY) Stormwater Utility Division Manager John Spiker reported on the following: - Monsoon season update: Pima County rain gauge at 680 W Calle Concordia has recorded six inches of rain this year. - Town Council approved an update to the 1983 Intergovernmental Agency (IGA) between the Town and Pima County Flood Control for water course maintenance. The new IGA will define responsibilities via GIS map. It will also address The Loop maintenance and address the Town's need for an Operations laydown yard to store materials.   REGULAR SESSION AGENDA   1.REVIEW AND APPROVAL OF THE JUNE 16, 2022 MEETING MINUTES       Motion by Vice Chair Richard Crocker, seconded by Commissioner Gary Mattson to approve the June 16, 2022 meeting minutes as written.    Vote: 4 - 0 Carried   2.DISCUSSION OF MEETINGS AND EVENTS       Stormwater Utility Division Manager John Spiker reviewed recent and upcoming meetings, highlighting the Pima County Flood Response Training held on June 22, 2022.   3.DISCUSSION OF 2021/2022 TOWN OF ORO VALLEY MS4 COMPLIANCE SCHEDULE, FOURTH QUARTER REPORT       Stormwater Utility Division Manager John Spiker reviewed the Stormwater Utility Management Plan. Discussion ensued among the Commission and staff.   4.PRESENTATION AND DISCUSSION OF THE ORO VALLEY STORMWATER MANAGEMENT PLAN UPDATES       Stormwater Utility Division Manager John Spiker provided a presentation that included the following: - Stormwater Utility Mission Statement - Stormwater requirements - Oro Valley Stormwater timeline of Management Plan - MS4 permit from the State (valid through 2026) - Permit Authorization Certificate - Stormwater Management Plan requirements - Stormwater Management Plan changes Discussion ensued during and after the presentation among the Commission and staff.   5.DISCUSSION AND PRESENTATION OF THE 2023 STORMWATER UTILITY ADOPTED BUDGET AND FUTURE PROJECT NEEDS       Stormwater Utility Division Manager John Spiker provided a presentation that included the following: - Stormwater Utility Mission Statement - Adopted 2023 Stormwater Utility budget - Detailed breakdown of budget line items - Stormwater Utility future needs - Stormwater Utility funding sources Discussion ensued during and after the presentation among the Commission and staff.   FUTURE AGENDA ITEMS FUTURE AGENDA ITEMS Stormwater Utility Division Manager John Spiker will provide financial scenarios, potential monsoon report and an Intergovernmental Agency (IGA) presentation on water course maintenance in the future.   ADJOURNMENT    Motion by Vice Chair Richard Crocker, seconded by Commissioner Gary Mattson to adjourn the meeting.    Vote: 4 - 0 Carried    Chair Cuffari adjourned the meeting at 5:25 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 21st day of July 2022. I further certify that the meeting was duly called and held and that a quorum was present. ___________________________ Jeanna Ancona Senior Office Specialist    Stormwater Utility Commission 2. Meeting Date:08/18/2022   Submitted By:Yarina Hynd, Public Works SUBJECT: DISCUSSION OF MEETINGS AND EVENTS RECOMMENDATION: N/A EXECUTIVE SUMMARY: The following is a list of immediate past, and future, stormwater meetings and events. July 21, 2022 - Oro Valley Stormwater Utility Commission Regular Session Meeting  August 8, 2022 - Pima Association of Governments - Watershed Low Impact Development Working Group August 17, 2022 - Pima County Regional Flood Control District Advisory Committee Meeting August 18, 2022 - Oro Valley Stormwater Utility Commission Regular Session Meeting  September 8, 2022 - Pima Association of Governments - Watershed Low Impact Development Working Group September 21, 2022 - Pima County Regional Flood Control District Advisory Committee Meeting September 22, 2022 - Oro Valley Stormwater Utility Commission Regular Session Meeting September 30, 2022 - End of Monsoon Season  BACKGROUND OR DETAILED INFORMATION: For informational purposes only. FISCAL IMPACT: N/A SUGGESTED MOTION: N/A    Stormwater Utility Commission 3. Meeting Date:08/18/2022   Requested by: John Spiker, Public Works Submitted By:Yarina Hynd, Public Works SUBJECT: PRESENTATION AND DISCUSSION OF PIMA COUNTY AND THE TOWN OF ORO VALLEY WATERCOURSE MAINTENANCE INTER-GOVERNMENTAL AGREEMENT (IGA) RECOMMENDATION: For informational purposes only. EXECUTIVE SUMMARY: This intergovernmental agreement (IGA) updates and replaces a 1984 IGA between the Town of Oro Valley (Town) and the Pima County Regional Flood Control District (PCRFCD) largely incorporating authorization for the Town to utilize Pima County property for a streets & drainage operations/materials laydown yard. With the current expansion of Naranja Park, the longstanding operations yard needed to move. There is inadequate space remaining at Naranja Park, as well as within another town-owned useful location. The ideal placement of such a yard would be semi-central to Town, away from residential areas as much as possible and along an arterial route for easy access. There is, however, land available along La Cholla Blvd., just south and west of the Town boundary owned by Pima County, that meets the operational requirements. This area is just north of Overton, on the east side of La Cholla Blvd., composed of portions of parcels 225-06-016C, 225-06-016A and 225-06-014A (approximately at 9350 N. La Cholla Blvd.).   Currently, the Town has a right of entry to utilize this county-owned land. In order to finalize an agreement for perpetual use, the Town needs to either purchase said land if it were available or enter into an IGA with the County. Staff opted for the latter as there was no appraised purchase cost and more expedient to process. The County agreed. And during the crafting of this IGA, it was discovered that there was a longstanding IGA with the PCRFCD that was in need of updating.   The Pima County Board of Supervisors and the Oro Valley Town Council have had an IGA in place for the maintenance of the Canada Del Oro (CDO) Wash and its major tributaries as they pass through the town boundaries since 1984. This agreement was predicated on watercourses with a 100-year peak flow rate of 3,000 cubic feet per second (cfs); flow rates greater than 3,000 cfs were to be maintained by the County and flows falling below this threshold maintained by the Town.   In the nearly 40 years since the IGA was signed, new floodplain data has been obtained, new floodplain modeling techniques have been introduced, Town boundaries have expanded, public and private development has transpired, and new infrastructure has been introduced along the major watercourses in the form of the Chuck Huckelberry Loop (Loop).   This new IGA seeks to: 1) Update wash maintenance locations in the form of a Geographic Information Systems (GIS) mapping product that is shared between the County and the Town to more rapidly address changes in responsibility due to annexation, acquisition, and new floodplain data. See IGA attachment for map 2) Introduce the Loop infrastructure within the Town and assign responsibility. See IGA attachment for map 3) Provide the Town an opportunity to utilize the property at 9350 N. La Cholla Boulevard as an Operations Laydown Yard for the storage of Town materials and equipment. See IGA attachment for map This IGA has been approved by the Oro Valley Town Council at the July 20, 2022 Council Meeting and will be placed on the agenda for approval by the Pima County Board of Supervisors in August of 2022.   BACKGROUND OR DETAILED INFORMATION: In May 1984, the Pima County Board of Supervisors and the Oro Valley Town Council passed an IGA in regard to watercourse maintenance responsibilities for the CDO Wash and its major tributaries. The driving factor behind this agreement was the 1983 Pima County Flood Plain Management Ordinance and the desire to clearly identify responsibilities between the County and Town for the CDO Wash and its tributaries as they travel through Town boundaries. The prevailing thought was to maintain consistency of the CDO Wash and its tributaries in design, construction, and maintenance for the Town as well as our upstream and downstream agency partners.   The IGA stipulated that the maintenance shall take place on any river, stream, creek, wash, arroyo, or other body of water or channel having banks and bed through which waters flow at least periodically and any depressions serving to give direction to a current of storm water where the peak flow is 3,000 cubic feet per second (cfs) or greater during the regulatory flood.   Watercourses the County and Town understand to have a 100-year peak flow rate of 3,000 cfs have been identified, but the exact location where that flow rates shifts below or above the threshold were never clearly defined. As development creeps closer to the floodplain boundaries it is imperative the County and Town identify exact locations for watercourse responsibility to ensure consistent floodplain management is taking place and to minimize impacts to properties both upstream and downstream. New hydrologic data and hydraulic modeling techniques have also shifted the understanding of where the original 3,000 cfs threshold may have existed to where it is today and may change in the future. Updated rainfall information from the National Weather Service and United States Geological Survey groups and new modeling techniques in the form of 2 dimensional flow analysis have changed the way flow rates are identified.   This updated IGA seeks to clearly identify where and what activities the PCRFCD and the Town will provide watercourse services. This IGA is served in the form of Geographical Information Systems mapping layers, shared between the County and Town, and will be updated to track new property ownership, floodplain modifications, and new infrastructure.   In addition to clearly identifying areas for watercourse maintenance, the Town desired a new location for the Operations Laydown Yard to replace the area of yard at Naranja Park. The development of Naranja Park required the Oro Valley Public Works Operations Division to relocate from that location. The PCRFCD will allow use of their property along La Cholla Boulevard, north of Overton Road for such a purpose. The Town will be required to secure, maintain and abide by the Right of Entry requirements contingent upon the IGA being signed.   Lastly, since the original 1984 IGA was signed, significant portions of the Chuck Huckelberry Loop (Loop) have been developed within the Town boundaries along the CDO and Big Washes. These Loop segments provide a significant regional amenity for our residents in Oro Valley. The updated IGA seeks to identify this regional asset and similarly to the watercourse itself, spell out who is performing maintenance and where this is to take place. As the Loop is ever expanding, the County and Town will maintain a GIS map layer showing responsibility and update the map layer as new segments come online. FISCAL IMPACT: The Town will assume maintenance responsibility for the La Cholla Laydown Yard. These activities were already happening at the Naranja Park site and should pose no additional fiscal impact to the Town. The site was secured last fiscal year and an additional $325,000 was allocated this year in the Town's Capital Improvement Program funds for future programming to be coordinated with Pima County.   The Town will assume the maintenance of the Chuck Huckelberry Loop (Loop) segments within the Town boundaries from Overton Road to Rancho Vistoso Boulevard along the CDO and Big Washes. The Town is currently maintaining the Loop from La Canada Drive to Tangerine Road. Trash pick up and minor pavement rehabilitation for nearly 2 miles of new asphalt pathway will become the responsibility of the Town. Projections of roughly $4,106 shall be allocated annually to address maintenance of the new Loop segments. These maintenance responsibilities will provide in-kind value to Pima County for the use of their property. SUGGESTED MOTION: N/A Attachments Replacement IGA  Original IGA  Presentation  Town of Oro Valley and Pima County Watercourse Maintenance Intergovernmental Agreement August 18, 2022 John Spiker, P.E. Stormwater Utility Manager IGA History The Oro Valley Town Council and Pima County Board of Supervisors entered into an intergovernmental agreement in May of 1984 for watercourse maintenance on the Canada Del Oro Wash and its major tributaries Substantial flooding in Pima County in 1979 and again in 1983 triggered a need to develop a floodplain management ordinance. An outcome of that work was the IGA with Oro Valley to ensure consistent floodplain management was taking place. Need For Update -Laydown Yard The impetus for this update: •Town's need for a streets & drainage operations/materials laydown yard. •No suitable town-owned location could be identified to meet this criteria. •Land is available along La Cholla Blvd., just south and west of the Town boundary owned by the Pima County Regional Flood Control District, that meets the operational requirements. •The IGA will grant Oro Valley access and utilization of the nearly 8 acres of property subject to County regulations. Need For Update –Outdated Floodplain Information Beyond the Town’s need for an Operations Laydown Yard, the current watercourse IGA has remained unmodified for nearly 40 years. In that time developments within Honey Bee, Big, and CDO Washes have crept closer to the floodplains, producing updated floodplain information and modifying the locations of watercourse maintenance responsibilities Need For Update –Loop Pathway Expansion In addition to subdivision development, there has been significant expansion of the Chuck Huckelberry Loop within the Town of Oro Valley over the last 40 years. The IGA update seeks to identify responsibilities and locations for Loop maintenance. IGA Update Mapping In partnership with the Pima County Regional Flood Control District, the Town of Oro Valley is seeking to clearly define what and where watercourse maintenance responsibilities lie. This will be accomplished with Geographical Information Systems mapping layers. These map layers will be updated by the Town and County and new areas of responsibility for either entity come online. IGA Update Mapping What about the gaps in responsibility? As the previous map shows, there are significant gaps in water course responsibility. Who maintains those areas? These areas are the responsibility of third party entities to maintain; Home Owners Associations, private property owners or other governmental agencies Questions? John Spiker, P.E. Oro Valley Stormwater Utility Manager jspiker@orovalleyaz.gov