spot pond project - mwraand spot pond to fells covered storage tank 2 tank 1 pump station low...
TRANSCRIPT
Massachusetts Water Resources Authority
Spot Pond tank and pump station
January, 2015
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Outline
• Area Served by Project • Need for Project • Project approach: Design / build. • Project features • Construc@on photos • Opera@onal Challenges
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Area Served by Project
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Need for Project: Gillis Pump station redundancy
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Need for Project: Low Service System
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Need for Project: No Storage in “Northern Low”
Shaft W
Loring Road Tanks 20 MG Nonantum Rd
Shaft 7B
Shaft 8
Shaft 9
Shaft 9A
Charles R.
Mystic R.
Malden R.
Chelsea Cr.
Spot Pond
Chestnut Hill
‘Northern Low’
‘Boston Low’
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Two Problems. One project.
• Spot Pond Water Storage Facility
• Design/build project awarded to Walsh Construc@on Company in November 2011
• Project consists of – 20 MG storage tank in two separate cells – Pump sta@on for NIH and NH service area
• Construc@on underway
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Plan: Ravine Road
New England Regional Hospital
To Gillis P.S. and Spot Pond
To Fells Covered Storage
Tank 1 Tank 2
Pump Station
Low Service connection (suction)
High and Intermediate High service connections (discharge)
Detention Basin
Overflow pipe
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Rendering:
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Rendering:
Site Prior to Construction, October, 2010
Site Prior to Construction, October, 2010
Blasting Operation, Oct, 2012
Pump Station Suction Piping, June, 2013
Pump Station Slab, July, 2013
Miles of Steel Rebar, July, 2013
Rock Crushing and Material Sorting, Sept, 2013
Steel and Concrete for Roof Slab, Sept, 2013
Clearing Pipeline Road for New Pipe Installation, Sept, 2013
Concrete Slab Placement, Oct, 2013
Starting to Take Shape, Oct, 2013
Tons of Steel to Tie
Interior Baffle Walls, Oct, 2103
Staging to Support Roof Slab Installation, Oct, 2013
Staging to Support Roof Slab, Oct, 2013
Tank Overflow pipe Installation, March 2014
Jacking Pit with Soil Being Removed, March, 2014
Last Section of jacked pipe, March, 2014
Mobile Pumps Behind Gillis Pump Station, March, 2014
Standby Pump If Needed, March, 2014
Discharge Connection to Section 89, March, 2104
Overflow Pipe completion, May, 2014
Tank 2 Interior, May, 2014
Pump Station Piping, July, 2014
Switch gear, July 2014
Low Service Tie-in, Ravine Road, September, 2014
Duct bank installation in pipeline road, September, 2014
Pump Station, September, 2014
Landscaping underway, September, 2014
Slope Protection, Oct, 2014
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Northern High/Northern Intermediate High Pumping
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Operational Challenges
9.1 MGD
6 MG
20 MG
20 MG
2.6 MGD
4.2 MGD
11.7 MGD
4.2 MGD
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Low Service System
Shaft W
Loring Road Tanks 20 MG Nonantum Rd
Shaft 7B
Shaft 8
Shaft 9
Shaft 9A
Charles R.
Mystic R.
Malden R.
Chelsea Cr.
Spot Pond
Chestnut Hill
‘Northern Low’
‘Boston Low’