Langan Environmental Remediation Project Experience

Langan is a leader in the use of innovative remediation technologies. Our “hands-on” approach and practical experience extend to all phases of a remedial program, including technology selection, treatability and pilot studies, remedial design, and remedy implementation. Langan strongly focuses on the strengths and weaknesses of specific remedial technologies, as well as costs and effectiveness. 

The following is a collection of sample Langan environmental remediation projects. 

 

Texas Instruments Corporation

OVERVIEW
Langan has worked on various Texas Instruments Corporation sites managing groundwater monitoring programs, designing and implementing remedial programs and working with regulatory agencies towards site closures.

Location
Palo Alto & Santa Clara, CA, & Puyallup, WA

Client
Texas Instruments Corporation

Services
Environmental
Site/Civil


3D Visualization of Comingled Chlorinated Solvent Plumes

OVERVIEW
Langan provided 3D visualization analysis of the hydrogeologic framework and contaminant transport at a former industrial facility in New Jersey. The site was characterized by a large and dilute chlorinated solvent plume that has migrated 5,300 feet within a fractured bedrock aquifer. Multiple off-site sources also contributed dissolved solvents to the comingled plume. Environmental Visualization Studio (EVS) software was utilized in order to gain a better understanding of contaminant transport in the fractured and faulted bedrock aquifer. EVS software uses advanced gridding and geostatistical analysis to create 3D models of geologic setting and analyte spatial data.

Location
Confidential Site, NJ

Client
Confidential

Service
Data Management


Golden Gate Bridge Remediation

OVERVIEW
Langan served as the general contractor on this soil remediation job adjacent to the south approach to the Golden Gate Bridge. The project, associated with the Bridge's 75th Anniversary, consisted of site grading, trail improvements, and construction of a new plaza. The contaminants in soil were predominantly lead due to uncontained lead-based paint that had been sand-blasted off the bridge during numerous cleanings and re-paintings over the last 75 years. We oversaw the profiling, excavation, transporting, and disposing of the contaminated soil to a regulated landfill, ensuring adherence to best practices and stormwater protection plan measures, and we completed the closure report.

Location
San Francisco, California

Client
Golden Gate National Parks Conservancy

Service
Environmental


The Shops at Atlas Park

OVERVIEW
A former brownfield site, this lifestyle center consists of a two-acre "green" area surrounded by shops, restaurants, and a cinema. Langan provided environmental, surveying, geotechnical, and site/civil engineering services for this redevelopment.
AWARDS
2010 New York City Brownfield Cleanup Award for Open Space
2007 US Environmental Protection Agency Region 2, Phoenix Award for Excellence in Brownfield Development,
2007 American Council of Engineering Companies, Engineering Excellence Awards, Gold

Location
Glendale, NY

Clients
A & Co.
The Hemmerdinger Corporation
Desman Associates

Services
Environmental
Geotechnical
Site/Civil
Traditional Surveying


Cascades Park

OVERVIEW
Langan was a subconsultant for design consulting and engineering oversight for the Cascades Park remediation project, a former coal gasification plant and landfill Superfund site that was remediated by the City of Tallahassee under an Administrative Order of Consent with the U.S. Environmental Protection Agency. The site was redeveloped into a multi-use public park.

Location
Tallahassee, FL

Client
WRS Infrastructure & Environmental, Inc.

Service
Environmental


Former Gas Plant Remediation & Ecological Restoration

OVERVIEW
Langan developed and gained regulator agreement on a final remedy for a former major oil corporation gas plant site located in Southern California. The agreed upon path to closure utilized a background analysis and risk assessment to identify attainable remedial cleanup standards for constituents of potential concern. By taking a face-to-face approach with regulators (DTSC, Region 9 EPA, Central Coast RWQCB, County of Santa Barbara) and presenting a strong argument for a risk-based strategy to closure, Langan was able to achieve an agreed upon 1 to 2 year path to closure that was 27 years (case opened in 1988) in the making with two previous consultants.

Location
Santa Barbara, CA

Client
Confidential

Service
Environmental


Treasure Island/Yerba Buena Island Redevelopment

OVERVIEW
Langan is providing multidisciplinary engineering services for the Treasure Island/Yerba Buena Island Development Project on behalf of the Treasure Island Development Authority (TIDA). Our team has a high degree of familiarity with site conditions, including development plans, environmental conditions, and community and stakeholder concerns. We oversee the US Navy-led environmental remediation program; assist with issues of land transfer, reuse, and controls; and confirm continued acceptable environmental conditions on the islands by overseeing indoor air quality evaluations, preparation of soil management plans, stockpile management, tank removal, and lead and asbestos management.

Location
San Francisco, CA

Clients
San Francisco Public Utilities Commission
Treasure Island Development Authority

Services
Environmental
Geotechnical
Site/Civil


Haddon Township Redevelopment Area A

OVERVIEW
In 2002, Haddon Township adopted a redevelopment plan for the Haddon Avenue corridor. The 6+ acre site included multiple dilapidated, abandoned and underused Brownfields sites with suspected environmental impacts and designated a Brownfield Development Area (BDA) by the NJDEP in September 2008. To facilitate the completion of environmental investigation and remediation activities for the Brownfield sites, Langan assisted Haddon Township in obtaining grants through the NJDEP Hazardous Discharge Site Remediation Fund (HDSRF) program. Langan prepared and obtained approval of multiple HDSRF applications resulting in approximately $3,500,000 being allocated to Haddon Township to complete the investigation and remediation of the Brownfield sites. The site has been redeveloped with a mixed use transit village including retail space and apartments spread over seven four and five story buildings and a community clubhouse.

Location
Haddon Township, NJ

Clients
Haddon Township, New Jersey
Fieldstone Associates, LP

Service
Environmental


Bronx Terminal Market

OVERVIEW
Adjacent to the Harlem River and immediately south of Yankee Stadium, the redevelopment of the 18-acre portion of the Bronx Terminal Market included demolition of several of existing buildings, and development of approximately one million square feet of new retail, restaurant and neighborhood services, structured parking for 2,800 vehicles, and a 250-unit hotel.

Location
Bronx, NY

Client
The Related Companies

Services
Environmental
Geotechnical
Site/Civil

Architects
GreenbergFarrow
BBGM

Strategic Partner
Thornton Tomasetti


Distribution Facility

OVERVIEW
Langan is providing environmental engineering services to support the construction of a ±500,000-SF distribution facility that is being built on a 260-acre property. Our environmental services have included Phase I & II investigations, substantial soil & waste characterization programs, remedial excavation oversight, underground storage tank closures, and third-party Licensed Environmental Professional oversight. Langan is also providing construction administration and environmental monitoring as needed during excavation, which to-date has involved the export of over 100,000 cubic yards of soil.

Location
Middletown, CT

Client
Confidential

Service
Environmental


NJ Meadowlands Commission 1-A Landfill Solar Array

OVERVIEW
The solar array will be constructed on the top of the landfill and down the southern slope of the New Jersey Meadowlands Commission (NJMC) 1-A Landfill, with an intertie connection to the regional electrical distribution located off the site. The solar array is expected to provide over 3 MWdc of electric solar power annually. Langan has been retained by SunDurance to assist in a variety of design, permitting, and construction needs.

Location
Kearny, NJ

Client
SunDurance Energy (Subsequently purchased by PSE&G for Solar 4 All Program)

Services
Site/Civil
Geotechnical
Environmental
Natural Resources & Permitting


LNAPL Remediation

OVERVIEW
Langan developed a broad-scale management program to address light non-aqueous phase liquid (LNAPL) over a 70-acre area at a major asphalt refinery. The program was based on developing an LNAPL conceptual site model and evaluating applicable remedial technologies. Langan conducted LNAPL recoverability testing and pilot-scale testing to quantify recoverability and define remedial design parameters. Langan developed a focused LNAPL remediation approach for the entire site and proposed a suite of technologies from less aggressive (LNAPL skimming and periodic vacuum truck extraction) to more aggressive (multi-phase extraction) to allow for a phased and streamlined, yet flexible, program.

Location
Southeastern United States

Client
Confidential

Service
Environmental


Con Edison Dielectric Feeder Line Spill Investigation and Remediation

OVERVIEW
Langan was retained by Con Edison to manage remediation system engineering design, construction oversight, LNAPL recovery system operation, work plan development, soil and ground sampling, and permit management. This ongoing project has included the investigation and removal of dielectric fluid and impacted soil at over 30+ individual release investigations.

Location
New York, Bronx, Brooklyn, and Queens, NY

Client
Consolidated Edison Company of New York

Service
Environmental


Fort Lauderdale/Hollywood International Airport

OVERVIEW
Langan was contracted to provide environmental services during utility construction in a petroleum-impacted area near the western gate of Fort Lauderdale/Hollywood International Airport. Langan's services include work plan development, geotechnical evaluation of soil conditions, soil pre-characterization, well installation and abandonment, open-excavation air-sparging, and environmental observation during construction.

Location
Fort Lauderdale, FL

Client
Cummings-Balfour Beatty

Services
Environmental
Geotechnical


Utility Subsurface Investigation and Remediation

OVERVIEW
Langan performed subsurface investigations, engineering design, and remediation activities on or adjacent to active electric generating stations, switching stations, and substations at various locations throughout New Jersey.

Location
Various Locations in New Jersey

Client
Confidential

Services
Environmental
Geotechnical


Schlage Lock Factory Investigation and Remediation

OVERVIEW
Langan directed the investigation and remediation of soil and groundwater contaminated with trichloroethene (TCE) and perchloroethene (PCE) at the site of the former Schlage Lock factory, which closed in 1999. With regulatory oversight by DTSC and RWQCB, Langan helped develop a public participation plan, conducted a risk assessment, and provided supporting documents consistent with the National Contingency Plan as well as expert witness services. We also conducted a preliminary geotechnical investigation and provided geotechnical services during environmental remediation. Plans for the 46-acre site include the construction of several multi-story residential, retail, and mixed-use buildings; parking garages; and parks.

Location
San Francisco, California

Client
James C. Jaffe

Service
Environmental


Selected Projects