Isabella-_Site_Vist_Presentation_6APR2017.pdf

US Army Corps of Engineers

BUILDING STRONG®

10/17/16 SBW

Isabella Lake Dam Safety Modification Project (DSMP)

Pre-Bid Meeting – General Overview

6 April 2017

U.S. Army Corps of Engineers, Sacramento District Building Strong and Taking Care of People

Isabella DSMP – Introductions

• Program Manager: Cathy Wise

• Resident Engineer: Julie Martinez

• Lead Engineer: David Serafini

• Ph II Engineering Technical Lead: Michael Ruthford

• Contracting Officer: Melissa DeNigris

• Contact for questions or comments:

Use RFI Process Melissa.a.denigris@usace.army.mil

04/03/2017 DCS

mailto:Melissa.a.denigris@usace.army.mil

Overview of Project and Key Features

(SERAFINI)

• Overview of Project

• Purpose of the Project

• Overview of Project Features

Emergency Spillway Service Spillway Main Dam Modifications Main Dam right abutment/Hwy 155 Main Dam Control Tower Raise Auxiliary Dam Modifications Borel Outlet Works Abandonment

Isabella DSMP – Overview and Key Features

• 185’ high & 1880’ long

• Zoned earth fill

• Foundation primarily granitic bedrock

• 100’ high & 3257’ long

• Homogeneous silty sand

• Foundation = alluvial soils and bedrock

• Borel easement goes thru dam for water conveyance to SCE hydroplant

• Ungated Spillway

• Ogee Weir

• Dam constructed 1948-1953

• Primary Purposes:

Flood Risk Management Irrigation Power

• Design capacity of 568,100 ac ft, but current operational limit 361,000 ac ft

Isabella DSMP – Current Site

Borel Canal

Order of risk

Isabella DSMP – Potential Failure Modes

Active Major Fault (previously thought to be inactive)

Via internal seepage

Overtopping

Through crack near crest

Along walls and bottom of chute

Along conduit

Hydraulic Seismic Erosion

Borel Canal

Stability along Borel conduit and tower

Potential foundation liquefaction

Isabella DSMP – Work Limits

Work Limits

Isabella DSMP – Staging Areas

Staging Areas

Isabella DSMP – Disposal Areas

Disposal Areas

Isabella DSMP – Recreation Features

Recreation Features

Isabella DSMP – Key Technical Activities

• Key Technical Activities (themes) Blasting and Excavation Materials Processing and Disposal Construction of Zoned Embankments Dewatering Requirements Concrete Features

Labyrinth Weir Service Spillway Features Main Dam Control Tower Main Dam Rt Abut/Hwy155 Borel Abandonment (option)

Isabella DSMP – Emergency Spillway

• 12 cycle arced-labyrinth

• Weir 28 feet high

• Average chute depth 80 to 100 ft

• 120-foot maximum depth

• Approximate Total Quantities

2.825 MCY total excavation

Draft – Not for Construction

Isabella DSMP – Material/Zone Requirements

Drain Rock: 1.5” max size; Gradation similar to ASTM C33 No. 57.

Filter Sand: Fine to coarse sand; 3/8” max size; < 5% fines. Slightly coarser than ASTM C33 concrete sand

Rock Fill: Mixture of blasted rock (boulders, cobbles, gravels); 36” max size; <30% finer than sand

Transition: Well-graded mixture of blasted rock (cobbles, gravels, sand);

12” max size; <10% minus 2”.

Core: Silty sand and clayey sand;

minimum 20% fines; 3” max size.

Zone Gradations (Applies to Main and Auxiliary Dam)

Isabella DSMP – Main Dam Right Abutment/SR 155 (Looking Downstream)

Right Abutment Wall To Retain Embankment Raise

Main Dam

Isabella DSMP – Service Spillway

Existing Ogee Weir

Spur Dike Excavation

Left Wall Raise

Right Wall Raise and Extension

Right Offset Wall

Isabella DSMP – Staging and Site Access

Temporary Power Drop – 7.5 MVA

Temporary Power Drop – Offices

Access Points

Haul Routes

Disposal Areas

M1 Staging Area:

• Stockpiling

• Processing

• Staging/Storage

S1 Staging Area:

• Stockpiling

• Processing

• Staging/Storage

• Crushing Plant

A1 Staging Area:

• Stockpiling

• Processing/Washing

• Staging/Storage

A2 Staging Area:

• Stockpiling

• Processing/Washing

• Staging/Storage/Equip. Maint.

A3 Staging Area:

• Stockpiling

• Processing/Washing

• Staging/Storage

A2 Staging Area:

• USACE Offices

• Contractor Offices

• QA Lab

Isabella DSMP – Reservoir Operations

Note: Elevations are in Isabella Project Data Datum (add 3.76-feet for NAVD88)

Target Operational Level

Isabella DSMP – Construction Water

Lake Water (direct contract with Irrigation Water Districts) Re-use of collected dewatering, washing, storm water for dust control & compaction Well Water for Concrete Batching & Aggregate Washing

(new wells required under contract) Local Utility for Temp Offices (Erskine Creek Water Co.)

Isabella DSMP – Considerations and Restrictions

• Working Hours Normal Work Hours USACE: 7am to 7pm Mon-Fri Work Outside Normal Work Hours: Contractors to submit plan and coordinate with

Kern County for compliance with noise & light ordinances

• Noise & Light Concerns Noise Restriction: 9pm to 6am Mon-Fri; 9pm to 8am Sat-Sun

8.36.020 H 1: The development services agency director or his designated representative may for good cause exempt some construction work for a limited time.

• Holiday & High Public Use Days Limited work in areas adjacent to public on high use days (holidays & events) Will require coordination with public and good notification process

• High Wind Area Windy – historically starts in mid afternoon

• Project Access Limited Access/Staging at Main Dam

Isabella DSMP – Considerations and Restrictions

• Haul Roads Degrading of existing Dam section beyond limits shown on drawings will not be allowed

• Project Operations Project fully functional for normal (restricted pool) and flood routing operations during construction Dam, Tower & Gates to remain in continuous operation

• QA Lab Construct a modular facility for Government use per concept plan

• Test Fill Construct a test fill section

• Electrification All Stationary Equipment is to be electrified (Batch Plant, Crushing Plant, Dewatering Pumps, etc.)

Contract Procurement and Timing

(DENIGRIS)

Isabella DSMP – Solicitation W91238-17-R-0006

• Solicitation Posted: 30 March 2017

• Last Date to Submit RFI’s: 17 April 2017

• Solicitation Response Date: 09 May 2017 @ 1000 hours PST

• Anticipated Award: September 2017

• Anticipated Phase II Contract Value: $250-$500M

• Estimated Construction Duration: 42 Months

• Contract Type: Best Value Tradeoff

04/03/2017 DCS

Available on

AMRDEC

Available on

AMRDEC

Binder 1: Technical Proposal TAB A: Teaming Agreement(s), if applicable. If there is no teaming agreement, please clearly state that there is no teaming agreement.

TAB B: FACTOR 1 Technical Plan for Excavation and Earthwork TAB C: FACTOR 2 Management Approach TAB D: FACTOR 3 Experience and Capability TAB E: FACTOR 4 Technical Plan for Concrete Production and Placement Binder 2: Past Performance TAB F: FACTOR 5 Past Performance Binder 3: Small Business Participation TAB G: FACTOR 6 Small Business Participation Commitment Document TAB H: Subcontracting Plan (Only for Other than Small Business Contractors)

Binder 4: Price and Solicitation Information The CD with the electronic submissions must be included in this binder.

TAB I: Proposal Cover Sheet. The proposal cover sheet is required by FAR 52.215-1(c)(2).

TAB J: SF 1442 and Joint Venture Agreement. Standard Form 1442 completed and signed by authorized individual(s) of the Offeror.

TAB K: Price Schedule in Section 00 00 00 of the solicitation.

TAB L: Offerors are also required to provide a breakout of the line items provided in the price schedule.

TAB M: Pre-Award Survey Information.

TAB N: Bid Guarantee.

Isabella DSMP – Site Walk

Isabella DSMP – Site Walk Safety Brief (Martinez)

04/03/2017 DCS

1. Stay in pairs and have a buddy

2. Be careful for uneven footing and terrain (stay off slopes)

3. Keep a watch out for snakes (temperature is starting to come up)

4. No photos are allowed of the interior of the Main Dam and Auxiliary Dam control towers. Limit number people from each company.

5. Please no more than three vehicles at a time on the Main Dam Right Abutment.

6. If you are unsure about accessing certain areas consult a USACE Site Monitor (one will be at each of the key locations for safety)

The primary point of contact for this solicitation is:

Contract Specialist: Melissa DeNigris

Telephone: (916) 557-5137 E-MAIL: melissa.a.denigris@usace.army.mil

Contractual and Technical inquiries and questions:

ProjNet at https://www.projnet.org/projnet

The Solicitation Number is: W91238-17-R-0006 The Bidder Inquiry Key is: 2ACFNU-A2PCQW mailto:melissa.a.denigris@usace.army.mil