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SHIPLEY’S CHOICE DAM REHABILITATION PROJECT
Shipley’s Choice Elementary School September 13, 2018
Larry Mathena – Project Manager Anne Arundel County Dept. of Public Works
Preconstruction Community Meeting
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Agenda
2
1. Project Background
2. Preconstruction Activities
3. Construction Phases & Features
4. Road Closure
5. Planting Plan
6. Construction Schedule
7. Project Updates
8. Questions * Please sign in & grab a handout
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Project Background – Shipley’s Dam
3 • Dam built in 1981
• Seepage & Settlement Issues
• MDE deemed dam unsafe & directs County to remove
• County worked w/ JMT to complete design for Dam Removal
• Construction Contract awarded to Paydirt
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Preconstruction Activities – Overhead Line Relocation on West Benfield Road
4 • Temp. Relocate OH Line around New Culvert
• Street light relocated (Pole to be removed)
• BGE, Comcast, Verizon to relocate lines
• OH lines replaced after Culvert construction
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Construction Phases
5
Phase 1 Culvert Replacement
Phase 2 Shipley’s Dam Removal
• Construction in 2 Phases
• Zoning - R2 - OS
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Phase 1 – Stream Diversion + Erosion & Sediment Control
• Place ESC Features
• Install stream diversion
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Phase 1 – Public Utility Relocations Gas, Water, Force Main, Sanitary/Storm Sewers
• Utility Bypasses
• No interruption in service
• Existing/New Culverts in Red
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Phase 1 – Remove Ex. Culvert + Install New Culvert
New 7’x10’ Concrete Box
Culvert
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Phase 1 – New Culvert Profile
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Pile Driving & Preconstruction Home Surveys
10 • Home surveys conducted by County’s contractor Seismic Surveys
• Preconstruction survey of homes and other structures – Document existing conditions
• Post-construction survey also conducted
• Need pre/post surveys to help determine if damage occurred during construction
Pile Driving for Culvert • Required due to soft subsoil • 78 Concrete Piles to be used • Daytime work only • Vibration levels will be monitored
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Phase 1 – In Stream Work + Grading
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12
Road Closed between Pixie Dr & Severnside Dr
Phase 1 Road Closure Detour Plan
• W Benfield Road closed 6+ months
• Sign posted 2 weeks before closing
• Paydirt proposing change to Precast Culvert – Could save time
• County Traffic Engineer will consider signal changes (will monitor traffic during construction)
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• Install Filter Logs + Silt Fence
• Install Haul Road down to stream
• Begin removal of dam embankment
Phase 2 Dam Removal
Oak Stump Dr Cul-de-Sac
Shipley’s Choice Dam
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Phase 2 Dam Removal
• Earth fill from Dam placed along east hillside
• Drain along slope to intercept runoff
• Bear Branch channel reestablished after outlet pipe removal
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Phase 1 & 2 – Planting Plan
• Seed & Plant disturbed areas
• 141 Trees
• 493 Shrubs
• 1676 Live Stakes
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Tentative Construction Schedule
16 • Oct 2018 Ph 1 Construction begins w/ Erosion & Sediment Control Utility Relocations/Road Closure
• Winter Ph 1 Culvert Installation
• Spring 2019 Ph 1 Culvert completed/Road Opened
• Summer Ph 2 Dam removal begins
• Late Fall 2019 Ph 2 Construction complete
* Paydirt will provide Construction Schedule by late Sep
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Project Updates
17 • Monthly Updates on the Shipley’s Dam Project are emailed to the following HOAs & Organizations:
- Shipley’s Choice HOA & Community Assoc, Greater Severna Park Council, Point Field Landing Community Assoc, Crain West, Ben Oaks/Severn River Assoc
• Monthly Project Update will include: - Updated construction schedule, latest activities, road closure updates
• Project Updates may also be found on the County’s Website - For web address, see Handout
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Contact Info (on Handout)
Larry Mathena Project Manager Watershed Protection and Restoration Program Anne Arundel County Department of Public Works 2662 Riva Road, MS 7217 Annapolis, MD 21401 (410) 222-7908 [email protected]
Alternate POC: Greg LeBlanc Same Address (410) 222-0043 [email protected]
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Questions or Comments? 19
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Bureau of Utility Operations
24-Hour Emergency Water Services: (410) 222-8400 Billing Inquiries: (410) 222-1144
Bureau of Waste Management Services
Bulk Trash Service/Curbside Collections: (410) 222-6100
Bureau of Highways
Northern District: (410) 222-6120 Central District: (410) 222-7940 Southern District: (410) 222-1933 Traffic Lights/Signs: (410) 222-1940
Bureau of Engineering
General Inquiries: (410) 222-7500