This is a copy of a Staff Report regarding the 2020/2021 Town's MS4 Compliance Schedule, second quarter report, that was made to the Stormwater Utility Commission on January 21, 2021.
The Town of Oro Valley's (Town) Stormwater Management Program and Annual Report to ADEQ identify Minimum Control Measures (MCM’s) used to manage and control quality of stormwater runoff from the MS4. Each MCM has been given specific implementation dates and frequencies, measurable goals, and responsible departments.
This memorandum is a report on the Town’s Stormwater Management Program for the second quarter of the Annual Reporting Period for 2020-2021 (July 1st through June 30th). It has been prepared to keep stakeholders informed of the status of project implementation in terms of completed tasks that are either (A) ongoing or continuous, or (B) to be done a minimum of once each year.
Accompanying this Memorandum is a summary Table listing each of the six (6) required MCM’s along with their specific subset of Best Management Practices (BMP’s).
This summary Table shows that the Stormwater Utility is nearly up to date, and, with one possible exception, has met this quarter’s goals for implementing BMP’s that are ongoing and continuous. The one deficiency is BMP 1.5 “Outreach Events at Town of Oro Valley Schools", and which understandably will not happen anytime in the foreseeable future.
The Town manages stormwater quality in accordance with the Arizona Pollutant Discharge Elimination System (AZPDES) Permit AZG2016-002 that authorizes the discharge of stormwater from the municipal separate storm sewer system (MS4) to receiving waters, including Waters of the United States (WOTUS). The MS4 generally consists of roads, storm drains, and infrastructure carrying runoff into drainage ways or ephemeral stream channels. The Town has a Stormwater Management Program (SWMP) that describes the control measures it uses to manage the quality of discharges from the MS4. These Best Management Practices (BMPs) are:
MCM-1. Public Education and Outreach
MCM-2. Public Participation and Involvement
MCM-3. Illicit Discharge Detection and Elimination
MCM-4. Construction Site Runoff Control
MCM-5. Post-Construction Runoff Control
MCM-6. Pollution Prevention/Good Housekeeping for Municipal Operations
The Town’s Stormwater Management Program describes specific practices it uses to achieve compliance with Part 6.4 of the AZPDES Permit related to Minimum Control Measures, including specific implementation dates and frequencies, measurable goals, and responsible departments. Our staff keeps track of these thirty-three (33) targeted responsibilities, and has prepared the attached summary table showing project implementation in terms of completed tasks that are either (A) ongoing or continuous, or (B) to be done a minimum of once each year.
This attached summary Table shows that the Stormwater Utility is fully up to date, except for BMP 1.5, and has met this quarter’s goals for implementing BMP’s that are ongoing and continuous.
2020/2021 Town of Oro Valley MS4 Compliance Schedule