Stormwater Management Program Review

Transcription

1 Stormwater Management Review

2 Comprehensive Stormwater Management Mission Statement The mission of the CSMP is to develop and maintain a comprehensive watershed and stormwater infrastructure management program to protect property, health and safety; to enhance the quality of life; to preserve and improve the environment for the benefit of the public and to be responsive and sensitive to the needs of residents, property owners and public partners.

3 Flood Mitigation: Address flood problems with drainage improvement projects Floodplain Regulation: Regulate development in the floodplain Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. Water Quality and Pollution Control: Enhance water quality and maintain regulatory compliance with the City s Kansas Water Pollution Control Permit. Stormwater Management Funding: Provide adequate program funding for implementation and operation Meadows at Clear Creek

4 Flood Mitigation: Address flood problems with drainage improvement projects Since 1993 the city has constructed 58 CIP Drainage Improvement projects worth $47,500,000 receiving over $32,700,000 of matching funds from the Johnson County Stormwater and other outside agencies. Parks and Pipes Funding, since 2001, has been used to provide most of the matching funds necessary to qualify for outside funds. Cynthia, I'm so very grateful for the quick response and the overall graciousness shown by the city of Shawnee, JCW, and the construction company. Amy A W. 73rd St 52 nd and Charles Drainage Improvement I appreciate the extra care the contractor is taking to keep the streets as clean as they can. Roger S. 71 st and Flint The Construction Company has been fantastic. They have cleaned up the mess immediately. They are courteous and helpful and move out of way to keep traffic moving. They have done a great job and I have nothing but good things to say about them. Kathryn H W. 70th Terr

5 CIP Drainage Improvement Projects $47.5M Funding Over 20 Years $2.4M $4.9M $1.1M $8.9M $30.3M JCSMP (SMAC) Parks & Pipes SW Utility G. O. Bonds Fed & CDBG Currently the City s portion of these projects is funded by Parks & Pipes Funds through 2015 when this Special Sales Tax ends, unless it is continued by a vote of the Citizens of Shawnee.

6 CIP Drainage Improvement Projects $16.0M of unfunded drainage improvement projects have been identified as qualifying for $10.9M in matching funds from the JCSMP and would be scheduled until POTENTIAL SMAC PROJECTS NEEDING PARKS & PIPES FUNDING BEYOND 2015 ITEM # YEAR PROJECT NUMBER POTENTIAL SMAC PROJECT STATUS Unfunded CITY Share Potential Estimated SMAC Share TOTAL COST MC-021-XXX 71st St. Culvert Replacement, East of Mize No Funding $365,000 $742,000 $1,107, MC-021-XXX 67th & Cottonwood Culvert Replacements No Funding $878,000 $1,782,000 $2,660, MC-021-XXX 7000 Blk of Woodland Drainage Improvement No Funding $83,000 $167,000 $250, TC-021-XXX TC-021-XXX 6200 Blk of Rogers & Ballentine Drainage Improvement 6400 Blk Larsen to Switzer Drainage Improvement No Funding $1,213,000 $2,462,000 $3,675,000 No Funding $462,000 $938,000 $1,400, TC-021-XXX 6235 & 6236 Nieman Drainage Improvement No Funding $2,162,000 $4,390,000 $6,552, LQ-021-XXX W. 50th Street Drainage Improvement No Funding $74,000 $150,000 $224, LQ-021-XXX 5500 Oakview Drainage Improvement No Funding $111,000 $225,000 $336,000 TOTAL OF POTENTIAL SMAC PROJECTS NEEDING PARKS & PIPES FUNDING $5,348,000 $10,856,000 $16,204,000

7 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. 1. Stormwater Infrastructure Inventory: Publically Maintained. a) 10,400 Inlet, Outlet and Junction Box Structures (Systematic Inspections and Repairs) b) 174 Miles (920,000) of Drainage Pipe (120 Miles of CMP, 54 Miles of RCP) c) 6.2 Miles (32,500 L.F.) of Improved Channels d) 2,100 Drive Culverts e) 202,500 Ft. (38.3 Miles) of Drainage Ditches f) 312 Stream Miles (Clearing Blockages Etc) 2. The City enforces property owner maintenance of 268 private detention basins and stormwater quality treatment facilities. 3. Maintenance Field Crews respond to reported CSR drainage problems using a priority system based on safety and property damage. In addition as inspections are done throughout the year additional work orders are added to the list of projects leading to a 6-12 month back-log of CSR projects.

8 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system W. 68 th Pl.: Stormwater Crew replaced a driveway culvert and cleared ditch to drain properly and repaved drive approach W. 61 st Terr: The Cramonds had a failed drainage pipe and an large eroding ditch in their back yard which Stormwater Crews repaired, restoring the area. They were very thankful for the work done 6835 Pflumm: Stormwater Field Crews worked with Church Representative to Repair Sinkhole caused by a damaged pipe. They appreciated the quick response.

9 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. 4. Stormwater Infrastructure Inventory used to develop in stages an asset management program. a) Currently provides 40,000 ft/yr of pipe inspections, identifying repairs needed for our aging drainage pipe system. b) Improved concrete channels are also inspected and repairs scheduled. c) Inspected over 5,000 inlet structures; Repairing 100 s and Clearing 1000 s 73 rd & Flint area 73 rd & Flint area 73 rd & Flint area

10 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. 5. An estimated 23 miles (13%) of the 174 miles of public maintained drainage pipe system is beyond its expected service life of 35 years for CMP and 50 years for RCP. Three years of systematic inspections of the pipe system have shown that about 4.9% of the pipes require immediate repairs, about 45,000 feet. It is a high priority of the SMP to identify the condition of each pipe to allow for future plans for repair or replacement. a) Low estimated repair/replacement cost of the 45,000 feet of pipe plus additional yearly deterioration, engineering and inspection is $20,000,000. b) 10-Year Replacement Cycle = $2,000,000 per year

11 Storm Drainage System Maintenance: Johnson Drive and Noland Pipe Repair Project: $75,000

12 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. 6. An estimated 5,880 Ft. (18%) of the 32,500 Ft. of concrete channels are beyond their expected service life of years. Several locations are known to be in disrepair. a) Low estimated replacement value of the 5,880 ft. of channel is $2,200,000 b) 10-Year Replacement Cycle = $220,000 per year 6901 Long Woodsonia Channel - Before and After Repairs in 2012

13 Storm Drainage System Maintenance: Perform routine maintenance of the City s drainage system. 7. Improved Channels throughout the City need to have sediment, trees and brush removed to maintain the capacity of the culverts under streets and up and downstream channels near the culverts; especially in flood prone areas. Mr. Nigro was thankful that we had scheduled to clear the channel to keep the water flowing, reducing the risk of flooding their buildings.

14 Storm Drainage System Maintenance: 2012 Maintenance Projects: 37 Locations with 3,800 feet of Pipe Repaired. a) 78,000 Ft. of Pipe Video Inspected And Several Other Locations Reported b) Construction Cost $1,400,000 c) Several Innovative Pipe Repair Methods Were Bid For Comparison Against Complete Remove and Replace Methods to Save Time, Money, Reduce Tree Removal and Property Restoration. 1) SPR (Spiral Wound Steel-Reinforced Interlocking PVC) Pipe Liner 2) CIPP (Cured In Place Pipe) Liner 3) CCCP (Centrifugally Cast Concrete Pipe Liner) 4) HDPE Pipe Liner (Snap-Tite) 5) Concrete Lined Pipe Invert 6) Fold and Mold PVC Pipe Liner Fold and Mold PVC Pipe Liner Under SMP RCB Culvert Reconstruction Through Yard and Drive

15 Storm Drainage System Maintenance: HDPE Pipe Liner (Snap-Tite) 1. This type of pipe lining worked very well for both large 72 pipes and 24 pipes. 2. We are planning to meet with the manufacturer to explore how our own field crews can do the same work. 57 th and Pflumm: Pipe Lined 600 of Failing CMP Pipe with out closing Pflumm

16 Storm Drainage System Maintenance: Concrete Lined Pipe Invert 1. On this Double Barrel 72 Pipe Culvert the contractor filled one of the culverts with a rusted out invert with concrete. 2. We will use SPR (Spiral Wound Steel-Reinforced Interlocking PVC) Pipe Liner on the other culvert to give us an easy place to compare. 56 th and Widmer: Lined 300 of Failed CMP Pipe with SPR and Concrete Invert

17 Floodplain Regulation: Regulate Development in the Floodplain 1. Maintain the most Recent FEMA National Flood Insurance Rate Maps (NFIP) a) New Maps Issued by FEMA on August 3, 2009 b) Affecting 1,100 Properties But Only About 200 Structures, Submitting Mass LOMA 2. Maintain the FEMA NFIP CRS Providing 10% 15% Flood Insurance Discount due to our new Class 7 Rating. 3. Work with Developers and Property Owners Located in the Floodplain 4. Educate the Public About the City s Role in Floodplain Management and how we can serve them.

18 Water Quality and Pollution Control: Enhance water quality and maintain regulatory compliance with the City s Kansas Water Pollution Control Permit. 1. Coordinate compliance activities through all Departments and related agencies. 2. Educate and involve the public in pollution prevention activities. 3. Manage and Enforce property owner maintenance of detention basins and stormwater quality treatment facilities. 4. Coordinate Training and Enforcement activities for Pollution Prevention. 5. Advance Stormwater Quality Treatment projects Justice Center Stormwater Quality Treatment Retrofit Project - ARRA

19 Healthy Yards Shawnee Master Gardeners Green Heron Shawnee Resident Monticello Trails Middle School Testing Stream Water in Clear Creek Volunteers Marking Curb Inlets

20 BMP Cost Share Rain Barrel Examples

21 BMP Cost Share Rain Garden Example Rain Garden Before Rain Garden - After

22 Stormwater Management Funding: Provide Adequate Funding for Inspection and Repair Three inspection/repair plans to address repair need projections of the City s Stormwater Drainage System. The amount of publically maintained drainage pipe is 174 miles (920,000 ft.) and of has an estimated 54,000 ft. of needed pipe repairs. The 54,000 ft. includes continued deterioration of about 1% of the system per year. a) 45 Year Inspection/Repair Cycle: 2014 funding budget requires a reduction of the funding for repair projects to lower than the current rate or about $200,000 to $300,000 per year; based on $300,000 increase of General Funds to the and reducing several other program items. b) 22 Year Inspection/Repair Cycle: To keep the current repair rate would require increased funding which could be provided by raising the current Stormwater Utility Fee from $3/edu/mo. to $4/edu/mo. for 2014 with scheduled increases needed after five years. Each $1/edu/mo raises about $850,000 in Fees. c) 10 Year Inspection/Repair Cycle: To increase the inspection/repair cycle to a 10 Year level, set as a goal in the CSMP, requires an inspection rate of 92,000 ft./yr that would result in expected repairs needed for about 5,400 ft. of pipe. The estimated cost for these repairs, including engineering, is about $2,000,000 per year. d) Each of these scenarios are shown in three following budget projection charts.

23 $3.00 $2.00 $4.00 Stormwater Management $5.00 $125,000 $5.60 $8.00 $9.25 $24.00 $4,500,000 $4,000,000 $3,500,000 $3,000, Stormwater Utility Fee Comparison $3,130,000 $2,950,000 $3,542,000 $3,943,000 Stormwater Fee $ / ERU / Month Annual Revenue Stormwater Utility $2,500,000 $2,000,000 $1,500,000 $1,728,000 $1,576,000 $2,076,000 $1,000,000 $500,000 $0 Shawnee Overland Park Lawrence Fairway Olathe Lenexa Prairie Village Mission

24 10 Year Inspection/Repair Cycle Field Oper. SW Maint. SMP Insp/Repair 10-Yr Cycle Flood Mitigation Floodplain Management Water Quality

25 22 Year Inspection/Repair Cycle Field Oper. SW Maint. SMP Insp/Repair 22-Yr Cycle Insp/Repairs Not Done Flood Mitigation Floodplain Management Water Quality

26 45 Year Inspection/Repair Cycle Field Oper. SW Maint. SMP Insp/Repair 45-Yr Cycle Insp/Repairs Not Done Flood Mitigation Floodplain Management Water Quality

27 Questions? Stormwater Management