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SCOESCOD, Walker, CO, TREX Project'ppt


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Title: SCOESCOD, Walker, CO, TREX Project'ppt

Project Overview
Del Walker,T-REX Construction Oversight Manager
AASHTO SCOE/SCOD Meeting June 9, 2004
Transportation Expansion Project
Project Map with Station Locations
Transportation Expansion Project
Light Rail Elements
  • Double track system (approximately 19 miles)
  • West side alignment along I-25 (from Broadway to
    Lincoln Avenue in Douglas County)
  • Median alignment along I-225 (from I-25 to Parker
  • 13 Stations with parking at 12 stations
  • No at-grade crossings (trains will not interfere
    with traffic)
  • High speed
  • Operational efficiency
  • Increased safety
  • Additional light rail vehicles
  • New maintenance facility

Transportation Expansion Project
Highway Elements
  • Four through lanes in each direction on I-25
    (Logan Street to I-225)
  • Five through lanes in each direction on I-25
    (I-225 to C-470/E-470)
  • Three through lanes in each direction on I-225
    (I-225 to Parker Road in Aurora)
  • Safety/operational improvements
  • Acceleration/deceleration lanes
  • Shoulders widened where feasible
  • Interchange reconstruction at 8 interchanges (not
    all major)
  • Complete reconstruction of I-25/I-225 Interchange
  • Complete reconstruction of Narrows (Broadway to
    Steele Street in Denver)
  • Replace numerous bridges
  • Drainage upgrades
  • TransOptions and Intelligent Transportation
    System (ITS) elements

Transportation Expansion Project
Corridor Development
  • Summer 1995 Major Investment Study (MIS) began
    by the Colorado Department of Transportation
  • Fall 1997 Denver Regional Council of
    Governments (DRCOG) adopted MIS recommendations
  • Spring 1998 CDOT began Preliminary Engineering/
    Environmental Impact Statement (PE/EIS)
  • Fall 1999 Final EIS completed
  • Spring 2000 Record of Decision (ROD) filed by
    the Federal Transportation Administration (FTA)
    and Federal Highway Administration (FHWA)

Transportation Expansion Project
CDOT and RTD Inter-Governmental Agreement
  • CDOT and RTD executed on September 9, 1999
  • Establish the foundation for the new relationship
  • Work cooperatively together to finance/construct
    the Southeast Corridor Multi-Modal Project
  • Implement the Project using a single Design-Build
    Contract for the highway and light rail transit
  • Agreement on the exclusions from the Design-Build
  • Inter-Governmental Agreement (IGA) is unique
    nationally for a state DOT and transit agency

Transportation Expansion Project
Project Goals
  • To minimize inconvenience to the public
  • To meet or beat the total program budget of 1.67
  • To provide for a quality project
  • To meet or beat the schedule to be fully
    operational by June 30, 2008
  • Southeast Corridor Constructors (SECC)
    committed to complete by Fall 2006 (22 months
    ahead of schedule)

Transportation Expansion Project
Project Budget and Funding Sources
  • Projected budget 1.67 billion
  • Light rail elements 879 million
  • Highway elements 795 million
  • Voter approved bond proposals for highway and
    rail elements (1999 election)
  • No new taxes or increases to existing taxes
  • Full Funding Grant Agreement (FFGA) of 525
    million through FTA signed on November 17, 2000
  • Several municipalities and jurisdictions have
    committed 30 million in local matching funds

Transportation Expansion Project
Design-Build Concept
  • What is it?
  • Designing and constructing a project
  • Why are we doing it this way?
  • The combination of design work and construction
    into one Contract results in cost efficiency and
    more innovative and fast-tracked solutions
  • The T-REX Team provided 30 complete design
    plans, the Design-Build Contractor completes the
    design while constructing the project
  • Allows for flexibility, creativity, and
    innovation by the Design-Build Contractor

Transportation Expansion Project
Southeast Corridor Constructors Profile
  • Joint Venture Partnership of Kiewit Construction
  • and Parsons Transportation Group
  • Subcontractors
  • Mass. Electric Construction Sturgeon Electric
  • Rocky Mountain Signing Elmore Pipe Jacking
  • GE Transportation Systems Penhall Company
  • American Civil Constructors Dynaelectric
  • GE Harris Harmon
  • Subconsultants
  • DMJM-Harris Terracon
  • Sverdrup Civil HNTB Corporation
  • Turner Collie Braden Kleinfelder

Transportation Expansion Project
Project Uniqueness
  • Multiple agency coordination
  • Multi-modal approach
  • Design-Build construction
  • Primary goal minimizing inconvenience to the

Transportation Expansion Project
Key Elements of EIS Environmental Process
  • Joint FHWA / FTA Lead Agencies
  • Extensive Public Involvement Program
  • Agency Involvement on Task Forces
  • Noise
  • Air Quality
  • Wetlands

Transportation Expansion Project
Public and Agency Involvement During EIS
  • Policy Committee
  • Technical Committee
  • Public Open Houses
  • Neighborhood Meetings
  • Website
  • Focus Groups
  • Newsletter

Transportation Expansion Project
Key Environmental Issues During EIS
  • Air Quality
  • Corridor assessment
  • Hot spot analysis
  • Noise
  • Historic Resources / Section 4(f)
  • Hazardous Materials
  • Wetlands (approx. 5 acres)
  • Acquisitions
  • 6 houses, 1 duplex, 1 apartment building
  • 19 office buildings

T-REX Environmental Overview
  • T-REX Environmental Compliance Approach
  • Place the responsibility for compliance on the
    Design/Build Contractor
  • Provide FEIS and ROD documents as Contract
  • Evaluate Personnel and Environmental program
    plans as part of the selection process
  • Require Approval of Environmental documents prior
    to construction
  • Require monthly reporting of compliance
  • Partner with the Design/Build Contractor to
    facilitate speedy resolution to issues
  • Utilize Compliance Auditing techniques to ensure
    the Design/Build Contractor is meeting Contract
    commitment obligations.

T-REX Environmental Overview
Challenges of a project of this scale
  • Vast space required
  • Design Build
  • Efficiency

T-REX Environmental Overview
  • Contractor required to analyze and mitigate noise
    impacts in accordance with Federal Guidelines
  • Noise mitigation measures were identified in the
    FEIS, ROD, and RFP
  • Noise Walls (Highway mitigation)
  • Ballast mats, spring frogs (LRT mitigation)
  • Public involvement in consideration of
    construction mitigation measures
  • Denver noise ordinance adherence/variance
  • Successfully secured CCD noise variance for
    construction operations
  • Innovative noise mitigation during construction
  • Continuous monitoring during nighttime Bridge
    Demolition and other noise sensitive activities
  • Provide hotel vouchers for affected residents

T-REX Environmental Overview
Noise Trailers along I-25
T-REX Environmental Overview
Air Quality
  • Contractor required to implement an air quality
    monitoring and mitigation plan
  • PM10 monitors throughout project
  • Project installed meteorological station
  • Dust suppression during construction
  • Report to CDPHE monthly
  • Raw data and summary report
  • Mitigation measures taken
  • Implement Traffic Demand Management strategies to
    minimize air quality impacts
  • HOV lane implementation
  • Transit, Van Pool, subsidies
  • Encourage carpool, telecommuting, and flextime
    with businesses

T-REX Environmental Overview
Meteorological station
PM10 monitoring site
Transportation Expansion Project
Water Quality
  • Contractor required to develop strategies to
    ensure water quality during and after
  • T-REX obtained permits
  • MS4 (Municipal Separate Storm Sewer)
  • Contractor obtained permits
  • CDPHE/CCD Construction discharge permit
  • CDPHE/CCD Construction dewatering permit
  • CDPHE General Construction NPDES permit
  • Report to CDPHE quarterly
  • Raw monitoring data and summary report
  • Stormwater Management Plan revisions
  • Bi-weekly inspections
  • CDOT Erosion Control Advisory Team monthly review

Transportation Expansion Project
BMP placements and Lake Logan
Transportation Expansion Project
CDPHE Notice of Violation/Cease and Desist Order
  • May 19, 2003 Colorado Department of Health and
    Environment issued NOV to the Southeast Corridor
    Constructor Contractors
  • Citation alleged violations, of the Colorado
    Water Quality Control Act and implementing
    control regulations associated with the
    construction activities
  • Citation made use of T-REX compliance auditing
    information as basis for many of the violations
  • The Contractor has effectively responded to all
    action items identified within the NOV.
  • Recent T-REX compliance audit activity suggests a
    significantly improved stormwater quality program
    is in place to mitigate water quality concerns.

Transportation Expansion Project
Hazardous Substances
  • Phase I and Phase II investigations to identify
    potential contamination accomplished by T-REX
    prior to construction. Info made available to
    the D/B Contractor prior to bidding
  • Contractor required to manage, classify, treat,
    or dispose of hazardous substances, both known
    and unknown throughout project to prevent
    exposure to workers and the public
  • Approve Health and Safety Plan, and Approve
    Materials Management Plan
  • Sampling and Analysis Plan to identify potential
    contaminants prior to construction
  • Incorporation of CDOT Standard Specifications for
    Health and Safety Management
  • All remediation plans are approved through T-REX

Transportation Expansion Project
Various Locations throughout project
Transportation Expansion Project
Protected Species
  • Contractor required to comply with SB 40, SB
    99-111 and FEIS
  • Minimize impacts to wildlife and their habitat
    during construction
  • Survey of prairie dog, burrowing owl, and
    swallows nests prior to construction activities
  • Successfully relocated approximately 100 prairie
    dogs to Cherry Creek State Park (across County

Transportation Expansion Project
Protected Species
Burrowing Owl
Prairie dog
T-REX Environmental Overview
Cultural Resources
  • Contractor required to monitor excavations for
    archaeological/paleontological materials
  • Contractor commitment to halting construction
    operations upon discoveries
  • Communication with CDOTs archaeological
  • Contractor working in cooperation with Denver
    Museum of Nature and Science on assessment and
    recording of significant findings
  • T-REX, in coordination with the State Historic
    Preservation Officer, has been recording
    historical portions of the project for listing on
    the State Register of Historic Places
  • I-25/I-225 Overpass
  • General Iron Works
  • I-25 Narrows, between Logan St. and Evans Ave

T-REX Environmental Overview