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Mass Transit
crenshaw-lax-utilities-project
Crenshaw LAX utilities project

Part of a multidiscipline team, DRC is providing utilities engineering and coordination to construct the Los Angeles Metro Crenshaw / LAX Transit Corridor Project. It is located in a densely populated area in which virtually every type of utility exists, from water to electricity to telecommunications. Now under construction, the project is adding 8.5 miles of track and eight stations to the Metro Rail system in the vicinity of Los Angeles International Airport.

Identifying and relocating utilities, accurately and timely, has kept the work on schedule. Before construction commenced on one section of track, preliminary utilities work had to be performed, sometimes necessitating 12-hour weekdays and work on Saturdays to stay ahead of construction.

Performing utilities work required smooth coordination with multiple stakeholders, from Southern California Edison to the City of Los Angeles. The agencies impacted must approve utility designs. Adding to the job’s complexity is the Corridor’s route, which travels above and below ground. DRC has been responsible for utilities around the track segment, from 48th Street at Crenshaw to the Crenshaw Corridor’s terminus at the Exposition Line. This section has three underground stations: Vernon, Martin Luther King, and Expo.

DRC has guided a team assembling utilities packages for Metro. The packages serve as look-aheads, pinpointing potential problems such as massive structures too large to move. They contain project plans for specific areas, indicating every utility present, from overhead power lines to storm drains large enough to drive a truck through. Each package has a profile and an elevation. All utilities posing potential problems are identified. The prime consultant must submit these packages for review before drilling can start.

Proactive communication and coordination were essential to working effectively with consultants, Metro architects and engineers. DRC has met continually with Metro and the prime contractor to provide status updates and forecasts of upcoming utilities work.

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Mass Transit
metro-rail-green-line-construction-management-los-angeles-county-metropolitan-transportation-authority
Metro Rail Green Line Construction Management, Los Angeles County Metropolitan Transportation Authority
Los Angeles County Metropolitan Transportation Authority (LACMTA)

Electrical Inspection, Technical Writing, Coordinating Contract Administration, Change Order Negotiation, Payment Verification, Document Control, Scheduling Services Utilizing Primavera and Primavision Software

This project entailed Construction Management of the $700-million Los Angeles Metro Green Line project that extends from Norwalk to El Segundo, California. It included all field operations, processing change orders, coordinating with public agencies, reviewing and approving record drawings, cost estimating, planning, and construction scheduling.

D R Consultants & Designers, Inc. (DRC) inspected and examined all phases of construction for complex single or multiple projects, on and off site, to ensure compliance with contract specifications. DRC worked closely with and motivated the contractors to perform work according to every building standard, to stay on schedule, and, above all, to work safely. DRC submitted reports, recorded all significant job developments, and informed contractors of deficiencies.

DRC inspected incoming materials and equipment, in the field or at the source, to determine qualitative and quantitative compliance with project documents. We were responsible for contract drawings, specifications, and applicable codes and standards as well as the field and laboratory testing procedures used by or related to the contractor.

DRC avoided unnecessary disputes, but permitted no contract deviation without proper approvals. We developed inspection procedures and checklists, maintained control of contract revisions and verified use of the latest version, performed quality surveys for payments and/or other requirements, recorded a project history, and prepared supplemental reports as required. DRC also was responsible for technical writing, editing of memos, reports, procedures and documents for clarity, for preparing the Construction Management Plan, and for coordinating with Metro’s Resident Engineer and other members of its engineering staff.

Mass Transit
metro-rail-red-line-botanist-services-red-line-corridor-los-angeles-california
Metro Rail Red Line Botanist Services, Red Line Corridor, Los Angeles, California
Los Angeles County Metropolitan Transportation Authority (LACMTA)

Botanical Resources, Surveys Field Surveys/Monitoring, Identification of Project Vegetation Issues, Evaluation of Ecological Issues

The project area of the tunnel alignment, or Red Line Corridor, is located on the north and south slopes of the Santa Monica Mountains in the City of Los Angeles. It originates at the southern boundary of Runyon Canyon Park and portions of Nichols Canyon and extends to residential areas of Solar Drive and Mulholland Drive north to Universal City.

DRC assisted LA Metro with field investigations of the study area. The scope of services for the botanist and arborist consisted of periodic on-call/as-needed monitoring and field investigations of the status of native/natural and landscaped/horticultural botanical resources found within the tunnel alignment for the Red Line Corridor. The area of concern included a corridor 1,000 feet wide on either side of the centerline of the tunnel alignment. The objective was to collect sufficient data to determine if substantial changes occur to native vegetation or plant communities and residential landscaped areas due to dewatering of areas in the mountains during and after construction and to document when these effects may occur.

The botanist and arborist conducted an overview of the entire study area to evaluate pre-existing conditions of native/natural and landscaped/horticultural vegetation. Damage to botanical resources caused by previous abiotic and biotic factors were considered distinct and separate to potential impacts caused by tunnel construction dewatering.

The botanist’s review of ecological issues concerning landscaped vegetation, comprised primarily of horticultural and ornamental species, may be native or introduced species found on residential properties such as yards, property borders, and hillsides. The botanist, in cooperation with the arborist, conducted plant ecological methodologies designed to evaluate the potential use of water by trees and shrubs in the corridor. Both recommended appropriate surveys in the corridor to determine damage caused by dewatering to native/natural and landscaped/horticultural botanical resources, respectively.

Botanical Resources Survey Reports submitted to LA Metro presented the results of the on-call/as-needed field surveys. In addition to showing any damage botanical resources affected by dewatering, the surveys discussed general vegetation types in the study area and their condition and generally identified significant resources in the study area that showed verifiable dewatering damage, such as oak and sycamore tree habitats or groves.

 

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Mass Transit
metro-red-line-segments-2-and-3-environmental-engineering-services-los-angeles-california
Metro Red Line Segments 2 and 3, Environmental Engineering Services, Los Angeles, California
Los Angeles County Metropolitan Transportation Authority (LACMTA)

Conduct Initial Site Assessments, Real Estate Site Surveys, Site Investigations, Regulatory Compliance Inspections, Preparation of Health & Safety Plans, Support of CEQA/NEPA Compliance, NPDES Permit Renewal and IW Permitting, Preparation of Remediation Plans, Construction Support Services

DRC provided environmental compliance and community outreach services on LA Metro’s Red Line Segments 2 and 3 Project. DRC conducted initial site assessments to provide an order of magnitude assessment of the potential risks and liabilities due to environmental factors and conducted environmental audits of the mitigation measures associated with Segments 2 and 3 to ensure implementation and compliance with California Environmental Quality Act (CEQA) monitoring guidelines.

DRC performed site investigations to identify potentially hazardous and contaminated waste locations, suspected locations of chemical spills, and leaks from underground storage tanks (UST). Our professionals surveyed and tested sites to evaluate the presence of hazardous waste and/or contaminated materials such as asbestos‑containing materials, PCB‑containing materials, fuels, and other chemicals.

DRC responsibilities included construction, hydrology and groundwater, hazardous materials, air quality, noise and vibration, and safety and security, among others. Audit activities included verifying contract specifications and designs, monitoring activities, and Cal/OSHA safety requirements. Audit results were submitted quarterly and reviewed by the Federal Transit Administration.

DRC contributed to monthly construction discharge monitoring reports for compliance with LA Metro’s program-wide National Pollutant Discharge Elimination System (NPDES) permitting. The reports described each discharge site, including treatment design, wastewater flows and water quality analyses, and noted non-compliant discharges for follow-up sample collection and treatment system augmentation. DRC also provided assistance during NPDES permit renewal and IW permitting activities for Segment 1, including monthly progress reports, data collection entry, and preparing permit applications.

DRC assisted with developing and preparing design documents and specifications for proposed remediation work; participated in developing and administrating construction contracts for remedial technologies to determine the most feasible remedial alternative; advised and assisted with government and public affairs regarding environmental issues, providing expert consultation and on‑site evaluation of suspected hazardous conditions, noise, air quality, or other unknown conditions that required immediate resolution.

Our public relations services during the project’s construction phase included media interaction, cooperation and compliance with local environmental and government authorities, seminars and public meetings, and presenting all mandatory reports, including the environmental analysis, environmental impact reports, and air/noise pollution reports. DRC contacted and interfaced with all stakeholders—homeowners, residents, businesses, and community organizations—to minimize or respond to impacts of construction on their everyday lives.

DRC also organized a Citizens Environmental Committee comprised of community representatives and technical experts to identify environmental concerns, answer questions, and help prevent and mitigate environmental impacts caused by construction.

In addition, DRC provided advice and assistance on Government and public affairs relating to environmental issues, providing expert consultation and on‑site evaluation of suspected hazardous conditions, noise, air quality, or other unknown conditions that requires immediate resolution. DRC’s public relations services during the construction phase of this project entail media interaction, cooperation and compliance with local environmental and government authorities, seminars and public meetings, the presentation of all mandatory reports including environmental analysis, environmental impact reports, and air/ noise pollution reports.

Other project activities involved organizing a Citizens Environmental Committee comprised of community representatives and technical experts to identify environmental concerns, answer questions and aid in the prevention and mitigation of environmental impacts caused by construction. DRC was responsible for contacting and interfacing with all stakeholders (homeowners, residents, businesses, and community organizations) to minimize/respond to any impacts construction may have on their everyday lives.

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Mass Transit
mta-division-6-groundwater-monitoring-and-reporting-venice-california
MTA Division 6 Groundwater Monitoring and Reporting, Venice, California
Los Angeles County Metropolitan Transportation Authority (LACMTA)

Field visits to sites, Groundwater sampling, Well monitoring, Quarterly report preparation, Evaluation of results, Presentation of conclusions

This program provides data and evaluations necessary to satisfy the Regional Water Quality Control Board’s (RWQCB) quarterly groundwater monitoring and reporting requirements. DRC supported and implemented the existing Health and Safety Plan to protect all personnel and subcontractors at the site. This included quarterly monitoring and sampling of six groundwater monitoring wells at the site; beginning in November 2003 (4th quarter) and continuing for three quarters (three rounds of monitoring and sampling). Each well was monitored for depth to groundwater and for floating hydrocarbons using an electronic well sounder and interface probe. Groundwater levels were measured to the nearest 0.01-foot relative to the top of the well easing to conform with procedures for previous measurements. Groundwater levels range from approximately 19 to 25 feet below ground surface.

A new disposable bailer was used to collect groundwater samples. Each sample was decanted into sample jars. Natural attenuation parameters, including pH, specific conductance, temperature, dissolved oxygen, and oxidation-reduction potential, were monitored in the well after purging and sampling procedures.

DRC prepared quarterly reports for groundwater monitoring and one annual report after the 4th quarter 2003 monitoring event. The draft quarterly groundwater monitoring reports described field procedures, measured groundwater levels and water quality parameters during well purging, summarized laboratory analytical results, discussed results, and rendered conclusions. Maps were included that provided groundwater contours as well as the distributions of detectable groundwater contaminants. DRC prepared and submitted final reports to MTA by the 13th of the month following the end of each calendar Quarter.

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Mass Transit
mta-division-10-groundwater-monitoring-and-reporting-los-angeles-california
MTA Division 10 Groundwater Monitoring and Reporting, Los Angeles, California
Los Angeles County Metropolitan Transportation Authority (LACMTA)

Field visits to sites, Groundwater sampling, Well monitoring, Quarterly report preparation, Evaluation of results, Presentation of conclusions

This program provides data and evaluations necessary to satisfy the Regional Water Quality Control Board’s (RWQCB) quarterly groundwater monitoring and reporting requirements. DRC supported and implemented the existing Health and Safety Plan to protect all personnel and subcontractors at the site. Field activities consisted of quarterly monitoring and sampling of 12 groundwater monitoring wells at the site, beginning in May/June 2003 (2nd quarter) and continuing for four quarters (four rounds of monitoring and sampling). Each well was monitored for depth to groundwater and for floating hydrocarbons using an electronic well sounder and interface probe. Groundwater levels were measured to the nearest 0.01-foot relative to the top of the well easing to conform with procedures for previous measurements. Groundwater levels ranged from approximately 11 to 15 feet below ground surface.

A new disposable bailer was used to collect groundwater samples. Each sample was decanted into sample jars. Natural attenuation parameters, including pH, specific conductance, temperature, dissolved oxygen, and oxidation-reduction potential, were monitored in the well after purging and sampling procedures.

DRC prepared quarterly groundwater monitoring reports that described field procedures, measured ground water levels and water quality parameters during well purging, summarized laboratory analytical results, discussed the results, and rendered conclusions. Maps provided groundwater contours as well as the distribution of detectable groundwater contaminants. A registered Geologist signed all final reports.

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