Community presentation for Beverly Hills, Feb. 13, 2013

8/13/2019 Community presentation for Beverly Hills, Feb. 13, 2013

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Purple Line ExtensionCommunity Meeting: La Cienega Station Construction

February 13, 2014


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Agenda

Project Overview & Schedule

Pre-Construction & Construction Overview

Questions & Answers


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Project Overview & Schedule


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Approved Project


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Approved Project - SchedulePlanned Schedule Forecasted Schedule

Sect ion 1 Sect ion 2 Sect ion 3

Length 3.9 Miles 2.6 Miles 2.9 Miles

New Stations

Wilshire/La Brea

Wilshire/Fairfax

Wilshire/La Cienega

Wilshire/Rodeo

Century City

Westwood/UCLA

Westwood/VA

Hospital

Pre-Construction

ActivitiesCurrent - 2014 2017 - 2018 2025 - 2027

Construction 2014 - 2023 2019 - 2026 2027 - 2035

Operations 2023 2026 2035


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La Cienega Station Activities

Now: Pre-construction

Selecting Design-Build contractor

Utility relocations

Real estate acquisitions

Pre-construction surveys & business profiles

Later 2014: Construction begins


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Pre-Construction & Construction


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Wilshire/La Cienega Station

Work activities largely

contained within station

box area La Cienega to

Tower

2 construction staging sites: NE corner Wilshire/La

Cienega

NW corner Wilshire/Gale

Tunnel Boring Machine

(TBM) removal site at

conclusion of Section 1

tunneling

Entrance at NE Corner of

Wilshire and La Cienega


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Pre-Construction:

Utility Relocation

Utility relocations: Clears the way for station

construction

Ensures continued utility service Typical process:

Maintain at least 2 lanes of traffic

in each direction along Wilshire

Blvd during the day

Full or partial closures at night Truck/crew leave and lanes

reopen at the end of each work

period

Typical cross-section of underground utilities


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Subway Construction Overview

Tunnels: Pressurized twin tunnel boring machines (TBMs)

maintain ground pressure

Concrete tunnel liners installed as TBM proceeds

Little surface activity

Stations: Excavated from the ground down

Initial surface activity (~3 years): Utility relocation

Pile installation Decking installation

Station construction continues below ground (~5years)

Tunnel Boring Machines breaking through

Station Excavation


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Station Box Construction:

Soldier Pile Installation

Initial excavation support

Piles installed around the perimeter of

the station box

3 diameter hole is augured to 90 depth Steel pile is lifted and placed into the hole

Hole is back-filled with concrete

Work occurs behind k-rail

Heavy equipment stays on the street

until all piles are installed

Sidewalks remain open

2 lanes of traffic remain open in each

direction

Business access maintainedSoldier pile installation in Hollywood duringMetro Red Line construction (1995)


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Initial Excavation and Decking Installation

Deck

Beam

Concrete

Decking

Requires full street

closure

Generally over a series of

weekends

Crews work around theclock from Friday evening

to Monday morning

Business access and

sidewalks maintained

Streets reopen in time forMonday morning rush

hour

Placement of beams for deck installation


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Traffic Control Plans

During Full and Partial Street Closures

Work

Zone

Final Traffic

Control Plans are

done by the

Design-Builder

Traffic Control Plans to be approved by Cities of Los Angeles & Beverly Hills


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Below Concrete Deck

Completed decking at

Hollywood/HighlandStation

Street remains fully open with

concrete decking

Little difference from driving on aregularly paved street

Station construction continues

beneath concrete decking for

about 5 years


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Extended Work Hours

Minimizes overall duration of most significant construction impacts

Maximizes efficiency

Ensures Section 1 completion in early 2023

Extended hours allows for work during: Peak Hours: Street construction during AM & PM peak periods

Night-time: Overnight work within designated noise limits

(not seeking variance to noise limits)

Holiday Moratorium: Construction during non-holiday periods between

Thanksgiving and New Years


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Anticipated Timing of Activities for

Wilshire/La Cienega StationAbove Ground (now till 2017):

Advance Utility Relocation

Pile installation

Decking installation

Below Ground (2017-2021): Station excavation

Station construction

Above Ground (2021):

Deck removal & street restoration

Below Ground (Late 2022-2023):

Systems & testing

Pre-revenue service

Revenue service (2023)


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Optimal Schedule Without Restrictions

(Assumes extended work hours)

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

SURFACE BENEATH STREET DECKING SURFACE

Utility Relocations

20182013 2014 2015 2016 2017 2019 2020 2021 2022 2023

La BREA

FAIRFAX

La CIENEGA

Shoring

Street Decking

StationExcavation

Revenue

Service

Tunneling

Station

DeckRemoval and

Street Restoration

Systems

Installation

& Testing

Pre-Revenue Service


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La Cienega Work Hours and Provisional Schedule:

Advanced Utility Relocation

Night Time Work: Less impact to vehicles and pedestrians

Mitigations can be adopted to restrictnoisy work to before 11pm (saw cutting,

jack hammering)

Day Time Work: No on street parking will be available in

work zone. May be more appropriate for noisy

activities than week day nights Provides back to back to back shifts on

Sundays Some incidental utility work is expected

during non-peak daytime hours

Note: Durations assume Holiday Moratorium ExemptionNote: Durations assume Holiday Moratorium Exemption

Work

Period

Time of

Day

Detailed Work Hours Effective

Work Hours

per Week

Duration

Night-

time and

week-endwork

Nights Sun-Thurs 8pm - 6am

48 30 months

Days Sun 8am-6pm


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2014 Utility Schedule

Wilshire and La Cienega

30 Months Total


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Beverly Hills Permit Requests

Currently Pending October 15, 2013: Metro submitted 2 permit requests: fiber relocation

and well monitoring

December 11, 2013: City staff approved permits, pending Council

approval

January 21, 2014: Council deferred permit requests pending additional

information about fiber relocation work

February 12, 2014: Metro provided information including

No interruption in service

Exact locations of street closures and work zones

Mitigation measures for access, noise and dust

Inventory of affected parking, including revenue impact

Outreach Plan


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Beverly Hills Permit Process

Metro provides presentation to Section 1 Advisory Group Information on recently completed work

3-6 month look-ahead for anticipated work

Metro applies for permit with City of BH

Once approved, Metro schedules work and proceeds with

notices General Construction Notice sent 3 weeks in advance of pending work

Via email, website, social media

Detailed Construction Notice sent 3 days in advance of work, which includes Street closure details and work hours

Detours and alternate routes

Estimated time frame of activity

Parking restrictions and alternatives, if necessary


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Mitigation Plan

5 Step Noise Mitigation Plan1. Training

All employees must take Noise Awareness Training

Training offered monthly

2. Schedule

Schedule loudest activities during day time, weekend or early evening hours

3. Noise Control

Low impact back-up alarms used on trucks

Temporary sound enclosures used at worksite

Solar powered generators being used

Place of equipment and steel plates gently

Noise absorption materials placed in truck beds

4. Monitoring

Independent acoustical engineers, Metro, and the Contractor take night time noise

readings for real time corrections

5. Response

24 hour hotline and email


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Mitigation Plan

Dust

Must follow Southern California Air Quality Management District (SCAQMD)

standards for construction

Access

Access to all businesses and residents will be maintained, except when approved

by business or resident

If access needs to be blocked, Metro will arrange the appropriate time with the

business or resident

Detour maps will be provided, if necessary

Traffic

Traffic control plans are developed by Traffic Control Engineers and reviewed and

approved by the City Traffic Control Plans are designed to minimize traffic disruptions, but allow the

required work to be safely performed by our contractors and provide safe passage

by the public


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Stay in Touch

metro.net/purplelineext

[email protected]

Infoline: 213.922.6934

Twitter.com/purplelineext

Facebook.com/purplelineext
mailto:[email protected]:[email protected]


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Questions?

Community presentation for Beverly Hills, Feb. 13, 2013

Documents

Transcript of Community presentation for Beverly Hills, Feb. 13, 2013