negdc presentation december 2013

1Confidential – Not for internal distribution or public release. 1

Connecticut River Crossing 2013Connecticut River Crossing 2013Hadley/Hatfield, MAHadley/Hatfield, MA

David M. Grande Paul ScarpaDirector – Gas Engineering & System Operations Senior EngineerBerkshire Gas Company Berkshire Gas Company115 Cheshire Road 115 Cheshire RoadPittsfield, MA 01202-1388 Pittsfield, MA 01202-1388Phone 413-445-0265 Phone [email protected] [email protected]

mailto:[email protected]

205/01/23 2

Berkshire Gas Company – Located in Western Massachusetts

Connecticut River

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• 38,000 Customers• 1,500 Miles – Mains & Services• 1 Satellite LNG Plant• 3 Propane Air Plants• 120 Employees• 160 Years Old• 6 City Gate Stations

Company Information

405/01/23 4

• Installation of approximately 2,250 linear feet of 12-inch coated steel gas main. The project commences on Bridge Lane in Hatfield, MA and continues beneath the Connecticut River, terminating on Huntington Rd. in Hadley, MA. Approximately 1,600 linear feet of the proposed gas main shall be installed beneath the Connecticut River via directional drilling. The remaining 650 linear shall be installed within an open trench.

• Project is being done to provide additional firm volumes to Amherst College and provide additional system reliability for the Hadley/Amherst area.

• New main will run in parallel with existing 6-inch coated steel main which was installed in 1959 when the Company brought Natural Gas service to the Hadley/Amherst area.

Project Context – Connecticut River Crossing

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UMASS & Amherst College – Amherst MA

UMASS – Central Heating Plant

Amherst College – Central Heating Plant

6Confidential – Not for internal distribution or public release. 6

705/01/23 7

• Engineering for Project began in November 2012• The following was performed:

• Survey – current easement (Hadley) town ROW (Hatfield) • Test Borings – both sides of the river• Preliminary Design Plans- used to submit wetland filings• Wetland Delineation• Notice of Intent

• Wetland Notice of Intent submission to the Hadley and Hatfield Conservation Commissions and Mass DEP

• Filing Notice of Intent with the Natural Heritage and Endanger Species Program (NHESP)

• Army Corps of Engineers (ACOE) Category 2 Permit filing• Frac Out Plan

• Final Design Plans and Details• Final Permit Approval Received in September 2013

Project Mile Stones

805/01/23 8

• Request for Proposal (RFP) was issued on 8/19/2013• Bidders

• Hemlock Directional Boring Inc.• C.B. Utility Co., Inc.• JS Rae Construction• Directional Technologies, Inc.• Mears Group Inc.

• RFP’s were due on 9/3/2013• Project Awarded to JS Rae on 9/9/2013

Project Milestones

905/01/23 9

Horizontal Directional Drilling (HDD)

1005/01/23 10

HDD Steps

Pilot Hole

Reaming

Pull Back

1105/01/23 11

Milestone ScheduleCurrent Conditions

Hatfield

HadleyExisting 6” Coated Steel Main - 1959

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Milestone ScheduleCurrent Conditions – Hatfield Side

Hatfield – Westside – River Approx. 900 ft. wide

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Milestone ScheduleCurrent Conditions – Hadley Side

Hadley – Eastside

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Milestone ScheduleConnecticut River Crossing – Hadley Side

Company has existing 25ft. Permanent and working easement

Existing 6” Coated Steel Main

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Milestone ScheduleConnecticut River Crossing - Hadley Side

Environmental Protection Installed

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Milestone ScheduleConnecticut River Crossing – Hadley Side

Swamp Mats were required on the Hadley Side

1705/01/23 17

Milestone ScheduleConnecticut River Crossing – Hatfield Side

1,680 ft. – 12” Coated Steel – Induron Warrior 100 Coating – Designed for HDDRemaining 12” Coated Steel – Pritec 40 Mil Coating

1805/01/23 18


Preformed 100% X-Ray of Pipe Welds

1905/01/23 19


2005/01/23 20

Milestone ScheduleConnecticut River Crossing – Corrosion Control

Warrior 100 Pipe Coating & Rubber Pipe Rollers

2105/01/23 21

Milestone ScheduleConnecticut River Crossing – Corrosion Control

Powercrete R-95 Epoxy Based Coating Used for Welds – Designed for HDD

2205/01/23 22

Milestone ScheduleConnecticut River Crossing – Initial Pressure Test

Final Pressure Test – 300 Psig – 4 Hours - Deadweight

2305/01/23 23

Milestone ScheduleConnecticut River Crossing - Drilling

Down Hole System – Wire Line

During the pilot hole drilling, a directional guidance system is used to navigate the pilot hole along its pre-designed profile.

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Milestone ScheduleConstruction - Drilling

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Shallow Water Depths

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Milestone ScheduleConstruction - Drilling Pilot Hole

Conductor barrel were used – 120ft. 30” & 130ft. 12”

• Used to minimize the potential of a drilling frac out and/or ground collapse near the entry location. • The conductor barrel created a clear pathway through the soft soil conditions so that drilling could begin in more preferable geology

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Milestone ScheduleConstruction – Drilling Pilot Hole

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Milestone ScheduleConstruction – Drilling Pilot Hole

Final Pilot Hole Maximum Depth was 60 ft. Below Existing River Bed,

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Milestone ScheduleConstruction - Reaming

22” ream & 18” ream were used.The 22” ream was used to go through the bedrock

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Reaming consisted of pushing from the drill rig in Hadley and pulling with excavator in Hatfield.

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3305/01/23 33


3405/01/23 34


3505/01/23 35

Milestone ScheduleConstruction – Pull Back

Pull back began at approx. 12:30 PM on 11/20/2013 and took 5 Hrs. to complete.

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Milestone ScheduleConstruction – Pull Back

3705/01/23 37

Milestone ScheduleConstruction – Pull Back Hatfield Side

3805/01/23 38

Milestone ScheduleConstruction – Pull Back Hadley Side

3905/01/23 39

Milestone ScheduleConstruction – Testing & Tie-In

4005/01/23 40

Milestone ScheduleConstruction – Testing & Tie -In

4105/01/23 41

Questions

David M. GrandeDirector – Gas Engineering & System OperationsBerkshire Gas Company115 Cheshire RoadPittsfield, MA 01202-1388Phone [email protected]

negdc presentation december 2013

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