Fort Walton Beach Council agenda — 06-03-08 workshop agenda — reading text

SYSTEM ( NPDES) At the Federal level, the United States Environmental Protection Agency ( EPA) through the NPDES regulates stormwater management. The purpose of the NPDES Program is to protect human health and the environment. A requirement of the Clean Water Act states that certain point sources discharging pollutants into waters of the United States must obtain an NPDES permit. Point sources are defined as discrete conveyances such as pipes or man made ditches. Although individual homes connected to a municipal system or that do not have a surface discharge do not need permits, facilities must obtain permits if their discharges go directly to surface waters. Pollutants that may threaten public health and the nation' s waters are: human wastes, ground -up food from sink disposal, laundry and bath waters, toxic chemicals, oil and grease, metals, and pesticides. In 1990, Phase I of the NPDES targeted industrial activities, large construction projects, and areas with populations exceeding 100,000. In general, Phase II of the NPDES, published in late 1999, addressed stormwater discharges from small systems, such as the City of Fort Walton Beach, in urbanized areas with populations between 10,000 and 100,000 and construction sites disturbing one to five acres of land. The City prepared a required Notice of Intent for the Phase II permitting program and submitted it to the FDEP in 2003. The City's permit included the following required items: Six Program Elements with measurable goals in: Public education and outreach. Public participation /involvement. Illicit discharge detection /elimination. Construction site runoff control. Pollution prevention /good housekeeping. Implement approved Best Management Practices ( BMPs). Periodic reports to the FDEP. CITY OF FORT WALTON BEACH STORMWATER UTILITY IMPLEMENTATION PLAN REPORT TETRA TECH May 28, 2008 4  The intent of the NPDES Phase II Rule is that the implementation of the six program elements will significantly reduce pollutants in urban stormwater compared to existing levels. Expected benefits include reduced scouring and erosion of streambeds and /or ditches, improved aesthetic quality of waters, reduced eutrophication of aquatic systems, benefit to wildlife and endangered and threatened species, tourism benefits, and biodiversity benefits. The permitting fees for the City of Fort Walton Beach will be approximately $6,000 every five years. The initial estimated annual cost to fund the City's NPDES Phase 11 permit requirements is approximately $51, 500. 2.3 TOTAL MAXIMUM DAILY LOADS (TMDL) A new approach to protecting the State's waters by the FDEP is based on TMDLs. Section 303(d) of the 1976 Federal Clean Water Act (CWA) requires states develop a list of waters not meeting water quality standards or not supporting their designated uses ( e.g., drinking, fishing, swimming, shellfish harvesting). A single water body may have several TMDLs, one for each pollutant parameter. The FDEP is currently developing and adopting TMDLs for the City of Fort Walton Beach drainage basin ( Choctawhatchee Bay and it tributaries ( Bay System)) and will be implementing the TMDL Action Plan. Once the TMDL is defined, the load will be allocated to sources such as urban stormwater, wastewater treatment sites, industrial activities, septic tanks, agriculture activities, and other pollutant discharges. The greatest action expected to affect the City is reducing and treating urban stormwater runoff through stormwater retrofits and restoration projects. The City of Fort Walton Beach encompasses approximately 4,780 acres of land. A range of TMDL costs for the City is determined by taking 3040% of the City's land size and applying an average stormwater retrofitting cost of $4,000 per acre over a 20 year period. Over a 20 year period it is estimated that the City will incur approximately $ 5. 7 million to $ 7.6 million in TMDL costs. The estimated annual TMDL cost to the City is estimated to be $ 287,000 to $ 382,000 ($ 334,500 average). At this time, since the state's TMDL program and its impact on the City remain to be finalized, the TMDL costs are not included in the projected annual revenue needs. However, the TMDL program is forthcoming and will be a significant budgetary line item for the City to address in the near future and should be considered a forthcoming requirment. 2.4 CAPITAL IMPROVEMENT PROJECTS A comprehensive list of Capital Improvement Projects ( CIP) was generated by the City and evaluated by Tetra Tech to determine an opinion of construction costs associated with each project. Other costs associated with planning, engineering, and permitting the CIP were also developed. CITY OF FORT WALTON BEACH STORMWATER UTILITY IMPLEMENTATION PLAN REPORT TETRA TECH May 28, 2008 5  2.4. 1 Prioritizing Existing CIP The City's current CIP includes fourteen ( 14) projects as shown in Figure 2 -1. The City's Stormwater Program is based on improving the level of service the City's stormwater management system provides to the residents of the City. The City's CIP includes prioritizing each of the City's CIP projects based on the following criteria and weight factor points): Public Safety, Health, and Welfare Concerns: ( 0 -20 points) Long Standing Problem: ( 0 -10 points) Water Quality Impacts (0 -20 points) Beneficiary Scope: ( 0 -20 points) Structural Condition: ( 0 -15 points) Public Interest and Sensitivity: ( 0 -15 points) Table 2 -1 provides the prioritization of the City's CIP. 2. 4. 2 Existing CIP Costs An opinion of construction cost for each project was developed and summarized in Table 2 -2. Appendix A includes the detailed opinions of construction costs for each project. The City's Stormwater Program with associated planning, engineering, and permitting totals $13. 7 million to improve the Level of Service (LOS) for the drainage structure(s). CITY OF FORT WALTON BEACH STORMWATER UTILITY IMPLEMENTATION PLAN REPORT TETRA TECH May 28, 2008 6  LEGEND: Specific Stormwater Project Location Notes: Regional project with cost sharing anticipated with Okaloosa County, City, Northwest Florida Water Man- agement District, and Choctawhatchee Basin Alliance. Multiple separator units planned at five different out - falls in the City over fire years (locations TBD). FIGURE 2 -1 CITY OF FORT WALTON BEACH STORMWATER UTILITY MASTER PLAN STORMWATER CIP PROJECT LOCATIONS complex world CLEAR SOLUTIONS" TETRA TECH  Public Long Water Beneficiary Structural Public Cumulative Safety, Standing Quality Scope Condition Interest & Score Health & Problem Impacts Sensitivity Capital Welfare Project ID Description 0 -20 0 -10 0 -20 0 -20 0 -15 0 -15 0 -100 J S vania Heights/ Industrial Park Area* 10 10 15 20 15 15 85 L E lin EasemenUCalibmia Ditch 10 10 20 20 15 10 85 O Stormwater Separator Units*" 20 5 20 20 5 15 85 E Coral Ditch - Robinwood to Hwy 98 10 10 15 15 15 10 75 D Golf Course Stream Restoration 5 5 20 15 10 15 70 F Linstew Drive 10 10 5 15 15 5 60 I Say Drive & Brooks Street 10 10 10 10 5 10 SS G Jon uiUSullivan 15 5 5 15 5 5 50 H Powell Drive 15 10 5 10 5 5 50 M Lake EarUGoodthin Lake 5 10 20 5 5 5 50 N Bass Lake 5 10 20 5 5 5 SO K EvWng Court 5 5 5 5 15 10 45 C Oyster Reef Restoration 0 0 20 5 0 15 40 A Jet Stadium Parking Lot 0 10 15 10 0 0 35 B Brooks Bridge Parking Lot 0 10 15 10 0 0 35 Notes: TABLE 2 -1 Regional project with cost sharing anticipated with CITY OF FORT WALTON BEACH Okaloosa County, City, Northwest Florida Water Man- agement District, and Choctawhatchee Basin Alliance. STORMWATER UTILITY MASTER PLAN Multiple separator units planned at five different out - falls in the City over five years ( locations TBD). CIP PRIORITIZATION complex world CLEAR SOLUTIONS" TETRA TECH  Capital Improvement Description Opinion of Con - Project ID struction Cost J Sylvania Heights/ Industrial Park Area* 6,568, 300 L