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Colchester Interceptor System Im provem ents Project Community - - PowerPoint PPT Presentation
Colchester Interceptor System Im provem ents Project Community - - PowerPoint PPT Presentation
Colchester Interceptor System Im provem ents Project Community Meeting #2 July 24, 2017 SA Project Manager: Debbie J. Maxwell, P.E., CCM Design Engineer: Michael Baker International, Inc. Construction Management: Arcadis U.S., Inc.
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Purpose of the Project
Limits of Service
7 Service Areas Numerous Lift Stations Miles of Gravity Sewers Miles of Force Mains
Featherstone Lift Station H.L. Mooney Water Reclamation Facility Project Limits Belmont Lift Station
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Purpose of the Project
Definitions
Gravity Sewer Lines
Sewer lines constructed to allow the wastewater to flow based
- n a downward slope
Interceptor Sewers
Gravity Sewer mains which receive the flow from collector sewers and conveys the wastewater to treatment facilities
Lift Station
A gravity sewer sump with a pump to lift accumulated sewage to a higher elevation
Force Mains
A pressurized sewer line to convey wastewater from a lift station to another service level and gravity sewer
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Purpose of the Project
Purpose of the Project
Replace an existing and aged Interceptor Sewer System Increase system capacity Reduce or eliminate stormwater and groundwater from entering the system
Benefits of the Project
Provide environmental benefits by relief of potential surcharge conditions Maintain service reliability
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Existing System Conditions
Featherstone Lift Station Belmont Lift Station Colchester Road Gravity Sew er Discharge Belmont Force Main 48” Interceptor Sew er
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Existing System Conditions
Approximately 7,600 linear feet of 36” - 48” gravity interceptor sewer Approximately 1,500 linear feet of 8” and 12” gravity sewer
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Proposed System Im provem ents
Install approximately 5,411 linear feet of 30” and 36” force main Replace approximately 2,132 linear feet of 48” gravity sewer with 54” gravity sewer Install approximately 1,530 linear feet of 8” and 12” gravity sewer Construct a new lift station
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Proposed System Im provem ents
Featherstone Lift Station Belmont Lift Station Colchester Road Gravity Sew er Discharge Belmont Force Main 54” Interceptor Sew er Marumsco Acres Lake Lift Station
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Proposed System Im provem ents
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Proposed System Im provem ents Marum sco Acres Lake Lift Station
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Proposed System Im provem ents Marum sco Acres Lake Lift Station
Lift Station Details
The building is 14’ x 14’ Brick siding Shingled roof The Station capacity is 350 gpm
Emergency diesel engine generator as back-up power Odor Control Carbon Filters Bioxide (calcium nitrate)
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Proposed System Im provem ents Marum sco Acres Lake Lift Station
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Site Activities
Activities
The Contractor will determine the final sequence of construction The Lift Station is limited to a 10 month construction period Open cutting of trenches
Force Mains and some gravity
Trenchless installation
Boring under Featherstone Road to avoid road closures
Microtunnelling for a portion of the 54” gravity main Installation of new manholes Tie-in of existing systems
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Notes of Interest
Construction Notes of Interest
Notifications will be provided by the Service Authority and the Contractor for any anticipated interruptions Access will not be interrupted
Emergency Services, school buses, trash, mail and other services will not be disrupted
Temporary parking areas will be coordinated with land
- wners, the Department of Parks and Recreation, and
HOAs if needed by the Contractor prior to construction Daily clean-up by the Contractor is required A Service Authority Inspector will cover this project and
- thers close by and will be on site on a daily basis
A Construction Manager / SA Project Representative will be onsite fulltime for the duration of the project
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Final Layout
Featherstone Lift Station Belmont Lift Station Colchester Road Gravity Sew er Discharge Belmont Force Main 54” Interceptor Sew er Marumsco Acres Lake Lift Station
Summary
Redirect flows to Belmont Lift Station Construct a new Lift Station Extend the force main Enlarge the gravity sewer size
Benefits
Increase system capacity Environmental benefits
Relief of potential surcharge conditions
Reduce or eliminate Inflow Improve system reliability
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Anticipated Construction Schedule
Project Duration
660 days / 21 months
Anticipated Start Date:
Award Contract in July 2017 Notice to Proceed in September 2017 On-site Construction start anticipated for October 2017
Anticipated End Date:
July 2019
Weekday Hours of Operations
7:00 a.m. to 5:00 p.m. Previously negotiated and approved night time hours
Certain business parcels
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Contacts
Community Relations & Outreach Liaison
Marlo Thomas Watson 571.285.8127 Email: colchester@pwcsa.org Project Specific Website: http://www.pwcsa.org/colchester-project
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Q & A
Any Questions?
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