Stormwater Program Workshop - Hillsborough County...PumpStation Rehab Lucy Dell PondEnhancements 7...
Transcript of Stormwater Program Workshop - Hillsborough County...PumpStation Rehab Lucy Dell PondEnhancements 7...
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Stormwater Program
Workshop Public Works Department
May 1st , 2019
Focus on the Customer
Focus on the Environment
Focus on the Future
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• Overview
• Sustainability Plan
• Funding
Stormwater Program Workshop
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Overview
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A Sustainable Stormwater System
Vision
Cultivate a sustainable and financially responsible stormwater
management system.
• Asset preservation and minimize risk of flood damage.
• Look for opportunities to include green infrastructure in projects.
• Seek out, evaluate, and implement innovative methods to improve water
quality, storm event management, and customer service.
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One Water Approach
• Sustainable management of life’s most essential resource
• All water is valuable • Rivers, lakes, reservoirs, aquifers
• Watershed Planning • Include regional partners to
respond to the natural flows of watersheds and the natural ecosystem.
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Watersheds
• Hillsborough County has 17 watersheds
• Cover 1354 Sq Miles
• Polk County and Pasco County contribute
122 Sq Miles drainage area to
Hillsborough River
• Polk County contributes 159 Sq Miles
drainage area to Alafia River Watershed
• Little Manatee River Watershed covers
76 Sq Miles Manatee County area
• SWFWMD Interjurisdictional Regulatory
Agency
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• Pipes – 1,313 Miles
• Ditches – 1,345 Miles
• Drainage Structures – 41,545
• Ponds – 2,099
• Pump Stations - 36
Stormwater System Assets
Pump Station Rehab
Lucy Dell Pond Enhancements
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FY 18 Revenue and Expenditures
Capital
Program,
$22.6M, 52%
Maintenance /
Operations,
$16M, 37%
Engineering /
Investigation,
$4.8M, 11%
Unincorporated
General Fund,
$20M, 46%
Grants, $1.5 M,
3%
Assessment,
$21.9M, 50%
REVENUE EXPENDITURES $43.4 Million $43.4 Million
Stormwater
Current Assessments
• Single Family Home: $42.00
• Apartment / Condominium / Townhouse / Mobile Home: $21.00 per dwelling
• Agricultural: $42.00
• Commercial / Industrial: $.035 per 1.5 square feet of impervious area
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https://Agricultural:$42.00https://SingleFamilyHome:$42.00
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Clean
Annual Improvements
Maintenance
• 50.2 miles of pipe
• 1,228 drainage structures Plan • 80 miles of ditch
• 15k cubic yards of sediment
Capital
• 5 Watershed Studies Updated
• 12 Watershed Studies Underway
Repair • 1.7 miles of pipe
• 435 drainage structures Design • 58 Flood Protection Projects
Mow • 3,320 acres Construct • 14 Flood Protection Projects
• 131 Pipe Replacement Projects
Keeping Drainage Working
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Focus on the Environment
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Compliance
Inspection
Analysis
Action
Met 100% inspection requirements.
Over 9,680 assets and 500 miles ditch/pipe
inspected.
Monitored 512 sites on 80 waterbodies.
Studied 43 waterbodies for health of system.
Water quality projects/initiatives,
nutrient source tracking, tree planting, street
sweeping, rain gardens, pollution prevention.
Compliance with Federal National Pollutant
Discharge Elimination System (NPDES) and
state environmental protection agencies.
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Focus on the Environment
Collaboration • Tampa Bay Estuary Program
• Nitrogen Management Consortium
• Adopt A Pond
• Keep Tampa Bay Beautiful
Innovation • One Water Initiative
• Green Infrastructure
• Conservation
• Aquifer Recharge
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Sustainability Plan
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FY 2018 Stormwater Work Requests
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• Demand for maintenance and
flooding reduction
• Increased maintenance
• Pre-regulatory development
• Aging infrastructure failures
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Maintenance Service Levels
Asset Maintenance Activity Existing Service Level
Pond Systems
Pump Stations
Major Outfalls
Drainage Structures
Pipes
Ditches
Street Sweeping
• Prevent erosion & maintain healthy vegetation
• Debris and sediment removal
• Inspection and repair: electrical and mechanical
systems
• Inspect for condition and obstructions
• Clean, repair, and replace pipe/structures
• Inspect for clogs and damage
• Jet clean and vacuum or repair
• Maintain flow
• Clean, repair, and replace pipes
• Trash and debris removal
• Clean, mow, and spray to maintain flow
• Arterial roadways approx. 663 lane miles per month
• Demand sweeping citizen requests
• Local roadways approx. 4500 lane miles per year
Sustainable Service Level
10 Year Cycle
60 Day Cycle
Biannual Cycle
50 Year Cycle
Quarterly Cycle
50 Year Cycle
10 20 Year Cycle
17 Year Cycle
25 100 Year Cycle
25 Year Cycle
15 Year Cycle
Quarterly Cycle
20 Year Cycle
Annual Cycle
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Asset Management Typical Life Span Average Asset Age
Pump Stations
• Pumps & Equipment 15 years
• Wet Well 75 years
Metal Pipes – 40 years
Concrete Pipes and Structures – 75 years
16 years
19 years
New Asset
Maintain
Inspect
Repair
Replace
39 years
29 years
Asset
Life Cycle
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Asset Preservation Service Levels
Asset Activity
Pump Stations
Pipes
Flood Projects
• Pump Station life cycle replacement
• Pipe life cycle replacement
• Neighborhood, Intermediate, Regional
Flood Protection Projects
Water Quality
Hazard Mitigation
• Regulatory Compliance
• Environmental protection and
restoration
• Reduce community flood risk costs and
impacts
Existing Service Level Sustainable Service Level
30 Year Replacement
10 year backlog reduction
60 year life cycle replacement
5 year Critical backlog reduction
Neighborhood, Intermediate & Regional Projects
Enhanced water quality projects
County funded flood area mitigation projects
30 Year Replacement
Unfunded backlog
90 100 year life cycle replacement
Unfunded backlog
Neighborhood Projects
NPDES Compliance
Limited to Grant Availability
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Sustainable Funding Proposal
Operation & Maintenance
Asset Preservation
Flood Protection, Water Quality & Hazards Mitigation
Total
Existing Funding Increased Funding Total Outcomes
$20.8M
$15.1M
$7.5M
$43.4M
$32.7M
$28.8M
$20.2M
$81.7M
$11.9M
$13.7M
$12.7M
$38.3M
• Improve customer satisfaction
• Preserve and restore drainage flow
• Improved water quality
• Regulatory compliance
• Replace failing assets to eliminate backlog
• Safety and property protection
• Reduces annual repair costs
• Develop and refine flood protection projects for future
funding opportunities
• Regional and Intermediate project design and
construction
• Regulatory compliance
• Environmental protection and restoration
• Reduce community flood risk costs and impacts
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Assessment Options
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Program Revenue
• Original Stormwater Assessment Ordinance adopted in 1989
• Currently funds capital and water quality
• Historically supplemented by the General Fund, Community Investment Tax (CIT), and Grants
• Current rate method:
• Residential one size fits all
• Commercial cost per square foot impervious
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Pipe Replacement Pipe Rehab
Before
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• Updated Rate Method
• Full Program Cost Recovery
• Sustainable Level of Service (maintenance & capital)
Assessment Options
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Rate Methods
Impervious Area ≈ 1,415 ft²
• Current Rate Method : Based on assumed 1,800 ft² average impervious area on residential lot (Est. 1990).
• Updated Rate Method : Based on actual 4,267 ft² average impervious area on residential lot and tiered sizes.
Small Medium Large
Impervious Area ≈ 3,200 ft² Impervious Area ≈ 5,120 ft²
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Method Revenue Source Comparison UPDATED METHOD
(ACTUAL AVERAGE 4,267 FT²)
CURRENT METHOD
(ASSUMED AVERAGE 1,800 FT²)
Residential,
386,505,000 SF,
45%
Commercial,
475,569,951 SF,
55%
CURRENT METHOD REVENUE
Residential,
918,186,416 SF,
66%
Commercial,
475,569,951 SF,
34%
UPDATED METHOD REVENUE
Residential,
$12,841,584
54%
Commercial,
$11,096,694 ,
46%
Residential,
$17,172,776,
73%
Commercial,
$6,226,435,
27%
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Full Program Cost Recovery
CURRENT FUNDING SOURCES PROPOSED FUNDING SOURCES Stormwater
$43.4 Million $43.4 Million Assessment,
$21.9M, 50%
3%
Grants, $1.5M,
Grants,
$1.5M, 3%
Unincorporated
General Fund,
$20M, 46%
Stormwater
Assessment,
$41.9M, 96%
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Residential Assessment Options
Existing Number of Updated Revenue Method Households Method Neutral Rate
$31.43 per year
$57.15 per year
$87.44 per year
-$10.57
+$15.15
+$45.44
32,697
153,402
27,845
$42 per year
Small
Medium
Large
Rate Equity
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Residential Assessment Options
Existing Number of Updated Full Cost Full Cost Method Households Method Recovery Recovery Rate
+$25.55
+$46.44
+$71.06
$56.98 per year
$103.59 per year
$158.50 per year
-$10.57
+$15.15
+$45.44
32,697
153,402
27,845
$42 per year
Small
Medium
Large
Reduce General Fund
Expense Rate Equity
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Residential Assessment Options
Existing Number of Updated Full Cost Additional Rate
Method Households Method Recovery Maintenance
+$25.55
+$46.44
+$71.06
+$15.31
+$27.83
+$42.58
$72.29 per year
$131.42 per year
$201.08 per year
-$10.57
+$15.15
+$45.44
32,697
153,402
27,845
$42 per year
Small
Medium
Large
Increased Level of Service
Reduce General Fund
Expense Rate Equity
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Residential Assessment Options
Existing Number of Updated Full Cost Additional Additional Sustainable Method Households Method Recovery Maintenance Capital Rate
Present Future
+$34.00
+$61.81
+$94.57
+$15.31
+$27.83
+$42.58
+$25.55
+$46.44
+$71.06
-$10.57
+$15.15
+$45.44
32,697
153,402
27,845
$42 per year
Small
Medium
Large
$106.28 per year
$193.23 per year
$295.66 per year
Increased Level of Service
Reduce General Fund
Expense Rate Equity
Life Cycle High Risk Pipes
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Commercial Assessment Options
Actual Existing Updated Revenue Impervious Method Method Neutral Rate
Area (ft²)
$107.15 per year
$200.91 per year
$267.88 per year
Rate Equity
$186.87 per year
$350.00 per year
$466.67 per year
8,000
15,000
20,000
-$79.72
-149.09
-$198.79
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Commercial Assessment Options
Actual Existing Updated Full Cost Full Cost Impervious Method Recovery Rate Method Recovery Area (ft²)
+$87.07
+$163.26
+$217.68
$194.22 per year
$364.17 per year
$485.56 per year
Reduce General Fund
Expense Rate Equity
$186.87 per year
$350.00 per year
$466.67 per year
8,000
15,000
20,000
-$79.72
-149.09
-$198.79
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Commercial Assessment Options
Actual Existing Updated Full Cost Additional Impervious Rate Method Method Recovery Maintenance Area (ft²)
+$52.88
+$97.41
+$130.81
+$87.07
+$163.26
+$217.68
$247.10 per year
$461.58 per year
$616.37 per year
Increased Level of Service
Reduce General Fund
Expense Rate Equity
$186.87 per year
$350.00 per year
$466.67 per year
8,000
15,000
20,000
-$79.72
-149.09
-$198.79
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Commercial Assessment Options
Actual Existing Updated Full Cost Additional Additional Sustainable Impervious Method Method Recovery Maintenance Capital Rate
Present Future Area (ft²)
$186.87 per year
8,000 -$79.72 +$87.07 +$52.88 +$117.44 $364.54 per year
+$216.34
+$290.52
+$97.41
+$130.81
+$163.26
+$217.68
$677.92 per year
$906.89 per year
Increased Level of Service
Reduce General Fund
Expense Rate Equity Life Cycle
High Risk Pipes
$350.00 per year
$466.67 per year
15,000
20,000
-149.09
-$198.79
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Stormwater Assessment
• Original Stormwater Assessment Ordinance adopted in 1989.
• Notification processing, rate hearing in August.
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Residential Rate Comparison
Annual Residential Assessment - Medium Size Home
$300 $280
$250 $230
$200 Sustainable Rate : $193.23
$175
$187
$160 $160 $163 $163 $165
$150 $139 $143
$118 $120 $125
$100 $82 $91 $91 $95
$72
$50 $42 $47 $53
$58 $60
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1) Currently Effective Rates as of 10/1/2018;
2) Rates may not reflect Full Cost Recovery
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Recommendations
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• Incorporate tiered residential method
• Full cost recovery
• Increased level of service in maintenance
• Sustainable capital funding
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7/8
8/7 10/16/19
5/1
Program Timeline
Public Hearing Public Hearing Rates Effective
Request
2019
10/1
2020
8/7 6/19
7/8
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OverviewSustainabilityPlanAssessmentOptionsRecommendations