ARCF SREL C2 Site Visit 10NOV20.pdf

AMERICAN RIVER COMMON FEATURES

Sacramento River East Levee, Contract 2 Seepage/Stability Levee Improvements Site Visit

November 12, 2020

AGENDA

4/24/20 NM

PROGRAM OVERVIEW

Project Background

TECHNICAL OVERVIEW

Overview

Remaining Efforts

Environmental

REGIONAL OVERVIEW

CONTRACTING

SACRAMENTO AREA PROJECTS

4/24/20 NM

AMERICAN RIVER COMMON FEATURES 2016

Authorized Plan Features

Cutoff walls Up to 13 miles

Bank protection Up to 21 miles

Levee stabilization Up to 5 miles

Levee raises Up to 5 miles

Widen Sacramento Weir and Bypass

Approx. 1500 feet

Environmental Mitigation Up to 680 acres

Replant Shaded Riverine Habitat Up to 15.5 miles

Reduces Risk 500,000 People

125,000 Structures

$62 Billion

SUBSTANTIAL COMPLETION TARGET JAN 2024

“The views, opinions and findings contained in this report are those of the authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation.”

SACRAMENTO RIVER

EAST LEVEE (SREL)

CONTRACT 2

IMPROVEMENTS

11/10/20 NM

SREL CONTRACT 2 - SCHEDULE

PROCUREMENT PROCESS

30OCT20 Solicitation

12NOV20 – Site Visit

3DEC20 – Bids Due

11JAN21 - Award

CONSTRUCTION

NLT 30 SEPT 2021 – Seepage/Stability Improvements Complete

NLT DEC 2021 – Construction Complete

11/10/20 NM

SREL CONTRACT 2 REMAINING EFFORTS

7/17/19 NM

SREL CONTRACT 2 OVERVIEW

SREL CONTRACT 2 OVERVIEW

REACH 4 JET GROUT CUTOFF WALL

Cutoff Wall

• 108 FT Depth

• 500 FT Length

• No Levee Degrade Levee Crest Railroad

• State Park’s Owned

• Two tracks – Limited Use for

Public Tours. Will run on weekends only.

Utility Conflicts

• Directional Jet Grouting

(Panels) Required

• 120” Pipe – Protect in

Place

• 42” Pipe – Protect in

Place

REACH 4 JET GROUT CUTOFF WALL

120” and 42” Pipe Utility Vault

• Wall Alignment Jogs to Waterside limit of Vault

• Panel Construction Required for Crossing Pipes

12REACH 5 & 6: OPTION 1 JET GROUT CUTOFF

WALL

Cutoff Wall

• 50 FT Depth

• 1,300 FT Length

• No Levee Degrade Levee Crest Railroad

• One Set of Tracks –

Limited Use for Public Tours. Will run on weekends only.

Utility Conflicts

• Various –

Petroleum/Gas/Com/ Water/ Overhead Electrical

REACH 5 & 6: JET GROUT CUTOFF WALL

Various Utility penetrations through out levee within Cutoff Wall Extents

• All are 24” or less in diameter

• 17 to be Abandoned in Place

• 14 to be Protected in Place

REACH 4, 5, & 6 STAGING AREAS

REACH 13 SB CUTOFF WALL

Cutoff Wall

• 63 FT Depth

• 920 FT Length

• ~5 FT of Levee Degrade Utility Conflicts

• 1 Piezometer Removal and Disposal

• 1 Pipe Removal and Disposal

REACH 13 SB CUTOFF WALL

• Tie-in into SREL Contract 1 DMM Wall at U/S end

• 2 Protect in Place penetrations D/S of Wall end

REACH 13 STAGING AREA

REACH 15, 16, & 17 CUTOFF WALL

• Cutoff Wall

• Combined 1.3 Miles of SB(Yellow) / SCCB(Green) / DMM(Blue) Cutoff Wall

• Degrade – approximately 6’

• Wall depths: 72 - 118 ft

Utility Conflicts

• 12 Removal and Disposals – Small diameter

(≤12” Waterlines/Electrical Conduits/Misc)

• Sump 63 Vault and Discharge Pipes (4)

Removal and Replacement

PHASE II CUTOFF WALL TRENCH STABILITY

• Cracking of levee and foundation and loss of slurry occurred at five locations during construction of

USACE Phase II SCB walls in 1992.

• Trench failures occurred while the trenches were supported by bentonite slurry, and prior to or during placement of final backfill material.

• All five sites are located within extents where SREL cutoff wall is proposed.

• Levee and foundation were excavated to about El. 7.5-13.5, followed by placement of geotextile and geogrid layers, reconstruction of levee, and reconstruction of cutoff wall.

REACHES 15-17 SUMP 63

Limit impact to residential communities by traveling on highways, major streets, and levee crown to extent practical.

Highways and major streets include:

• Interstate 5

• Front Street

• Broadway

• Riverside Drive

• Seamas Avenue

• 43rd Avenue

• Riverside Boulevard

• Florin Road

• Pocket Road

SREL C2 - HAUL ROUTES

• Access is limited due to residential areas

• 12 designated access points to levee crown

SREL C2 – LEVEE ACCESS POINTS

Borrow Material (Type 1 Fill)

– Potential Source: Sacramento Regional Wastewater Treatment

Plant

• Echo Water Project Spoil Stockpiles

Reuse of Excavated Materials

– Levee crown degrade is typically a sandier fill that does not meet levee fill (Type 1) requirements

– Unused degrade material can potentially be transported to the Railyards project

POTENTIAL BORROW AND DEGRADE MATERIALS

Borrow Site

SREL

NEEDED: MEET OR EXCEED EXPECTATIONS ON ALL ACCOUNTS

5/5/20 HC

APPROXIMATE QUANTITIES

Levee Degrade

(CY)

Levee Fill (Type 1)

(CY)

SB Cutoff Wall (SF)

SCCB

Cutoff Wall

(SF)

DMM

Cutoff Wall

(SF)

Jet Grout Wall

Jet Grout Option

85,000 85,000 420,000 70,000 140,000 52.500 47,750

• Levee Fill Type 1 is for levee reconstruction

• All NEPA/CEQA/Section 106 documentation is required contractor proposed borrow/disposal

• USACE Environmental Documentation –Covered in Spec

• Commercial Source with Mining Permit

CONSTRAINTS

Impacts to Elderberries: Elderberries in Project Footprint to protect in place

Impacts to Migratory Birds and Raptors

Impacts to Air/Noise Pollution

Impacts to Recreation (Bike/Pedestrian Paths, Boat Launches, Etc.)

WORKING HOURS & WINDOWS

WORK HOURS FLOOD SEASON TREE TRIMMING AND

REMOVAL

Monday – Friday 7am – 7pm

1 November – 15April 1 November – 15 February Saturday 7am – 6pm

Sunday 8am – 6pm

11/10/20 NM

SS&O ENVIRONMENTAL

• Tree Removal will be completed via separate contract starting in Fall 2020.

• SREL Contract 2 will be responsible for tree stump removal.

• Tree Trimming may be necessary

• Elderberries will be transplanted via separate contract starting Fall 2020 authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation.”

Project

Anticipated Construction

Schedule Description

NATOMAS

Reach I Contract 1 2019-2020 ~ 4 miles Levee Improvements - Cut-Off Wall

Reach H 2019-2020 ~ 4 miles Levee Improvements - Cut-Off Wall Reach B 2020-2021 ~ 2 miles Levee Improvements - Seepage berm, Relocation of Riverside Canal Reach E 2021-2022 ~ 3 miles Levee Improvements – possible cut-off wall Reach A 2022-2023 ~ 4 miles Levee Improvements – possible cut-off wall & numerous Utility Relocations

Reach F&G 2023-2024 ~ 4 miles Levee Improvements – possible cut-off wall

FOLSOM DAM RAISE

Dike Raise 2019-2024 ~ 5 miles of 3.5’ Dike Raise and related work in various packages Main Dam 2022-2025 Retrofit of up to 8 gates on the Main Dam

HAMILTON CITY 2019-2020 Mitigation and Planting TULE RIVER 2020-2024 10’ Spillway Raise, utility relocations, environmental mitigation

ARCF 2016

Sac River Levees 2019-2024 Up to 9 miles of cut-off wall and other seepage control features Sac River Erosion 2021-2024 Up to 10 miles of bank protection work Amr River Erosion 2021-2024 Up to 11 miles of bank protection work Sac Weir/Bypass 2022-2024 1,500 lf expansion of existing gated weir at Sac Bypass

Mitigation 2019-2024 Tree cutting, planting, maintenance, etc.

ISABELLA

Dams & Spillways Ongoing Construction of 16’ dam raise, new emergency spillway, and various improvements Site Restoration 2020-2022 Construction of permanent operations building, site restoration and misc. construction

YUBA RIVER BASIN

Phase 2C 2019-2020 ~ 1,000 lf DSM wall construction

Phase 2B/3 2020-2023 ~ 13,000 LF Cut-off wall construction Phase 4B 2022-2023 Rock Slope Protection installation PL 84-99 2018-2020 Various repairs in response to 2017 Flood Event

SUTTER BASIN 2019-2020 ~ 5 miles of Levee Improvements including cut-off wall LOWER SAN JOAQUIN Unknown Project is entering design phase and may have a contract as early as 2021 WEST SACRAMENTO Unknown Project is seeking to enter design phase and may have a contract as early as 2022

11/10/2020 NM

SYSTEMATIC OVERVIEW – CALTRANS PROJECT

I-5 Corridor Enhancement Project/I-5 HOV Lanes

On Interstate 5 (I-5) from 1.1 mile south of Elk Grove Boulevard Over crossing (PM 9.7) to American River Viaduct (PM 24.9) will rehabilitate pavement and other related assets, construct new High Occupancy Vehicle (HOV) lanes, install new fiber optic lines and extend the I-5 northbound #1 lane to improve the on ramp merge and weave movement

Total Project Cost: $370 million

Construction: Summer 2019 – Fall 2022 authors(s) and should not be construed as an official Department of the Army position, policy or decision, unless so designated by other official documentation.”

CONTRACTING

HOW TO OBTAIN SOLICITATIONS

11/10/20 NVRM

HOW TO OBTAIN SOLICITAITONS

SAMbeta – www.Beta.SAM.gov

Search by Solicitation Number – W9123821B0001

View Interested Vendors List and register as an interested vendor

Requirements to download Technical Data Package: Beta.sam.gov

Register to receive notifications and updates/amendments

Technical information will be posted on the BetaSam website

SMALL BUSINESS GOALS GOAL

Small Business (SB) 30%

Small Disadvantaged Business (SDB) 10%

Woman Owned Small Business (WOSB) 5%

Service-Disabled Veteran Owned Small Business (SDVOSB) 3%

Historically Underutilized Business Zone (HUBZone) 5%

Veteran Owned Small Business 5%

CONTRACT ADMINISTRATION

USACE Safety Manual, EM 385-1-1

Quality Assurance Surveillance Plan for Services

USACE Resident Management System (RMS) & Quality Control System (QCS) will be used for construction

Government is committed to partnering process at all levels http://www.beta.sam.gov/

UNIQUE CONTRACT ASPECTS

11/10/20 NM

Production/Productivity Rates (Efficiency/Effectiveness, Constraints, Innovations)

Material/Equipment – Volume in order to meet schedule

Proximity to Residential Neighborhood

Air Quality (Availability of higher tiered equipment/barges, recent model year equipment, innovations)

Schedule – Required completion by 30SEP20 for all levee improvements

Jet grout columns and panel to depths of at least 115 feet around several utilities and contaminated soil

Working hours; allowance and restrictions for working multiple shifts versus multiple rigs working one shift

QUESTIONS/COMMENTS/CONCERNS…

5/5/20 NM

www.sacleveeupgrades.com http://www.sacleveeupgrades.com/