Integrated Engineering and Environmental Services

When it comes to environmental solutions, all clients want to do the right thing, but they also need to know the right way. Langan truly partners with you as a technical and regulatory advocate. We work together with you to overcome complex scientific obstacles and guide you through complicated governmental policies so that you can achieve your objectives. Our success spans four decades, a testament to the longevity of our client relationships and our ability to provide innovative and integrated services for every type of environmental challenge. Put simply, it’s environmental advocacy, from initial investigation to final design, so that you can do the right thing… the right way.

SERVICES PROVIDED INCLUDE:
  • Site assessment, design, and remediation
  • Brownfield redevelopment
  • Transactional due diligence
  • Sediment characterization and remediation
  • Human health and ecological risk assessment
  • Natural resources and ecological restoration
  • Regulatory compliance and permitting
  • Air quality and industrial hygiene
  • Treatability studies
  • Technical support for environmental litigation

Hudson Yards Redevelopment

OVERVIEW
This major New York City rezoning and redevelopment, led by Related/Oxford, under the joint guidance of New York City, the Metropolitan Transportation Authority, Hudson Yards Development Corporation, and New York State, is reinventing the once barren west side of Midtown Manhattan. Upon full completion, the site will include more than 18 million square feet of commercial, retail, and residential towers, 14 acres of open park space, a cultural venue, a public school, and a luxury hotel all built over active rail yards.

Location
New York, NY

Client
Hudson Yards, a Related Oxford Venture

Services
Geotechnical
Environmental
Site/Civil
Traffic & Transportation
Traditional Surveying
Terrestrial Scanning/BIM

Architects
Kohn Pedersen Fox
Skidmore, Owings & Merrill
Diller Scofidio + Renfro
Ismael Leyva Architects
Rockwell Group

Strategic Partners
Thornton Tomasetti
WSP


Mannington Mills

OVERVIEW
Langan has provided ongoing remediation of multiple former operational areas at this site in New Jersey. Activities have included the investigation and remediation of former lagoon and impoundment areas, as well as subsequent restoration of these areas as freshwater and tidal emergent wetlands.

Location
Salem, NJ

Client
Mannington Mills, Inc.

Services
Natural Resources & Permitting
Environmental
Landscape Architecture


American Standard Former Trenton Pottery

OVERVIEW
Langan provided comprehensive environmental services to American Standard at the former pottery facility, culminating with the successful completion and NJDEP and USEPA Approval of a RCRA Closure Plan for lagoons, waste spoils areas and an on-site RCRA Landfill in 1993. We also conducted a series of comprehensive Remedial Investigations to support the closure and sale of the former pottery, and worked with American Standard to accomplish the cleanup and reuse of this strategically located facility by integrating practical solutions to integrate required remediation activities with site engineering plans.

AWARDS
American Council of Engineering Companies New Jersey, Engineering Excellence Award

Location
Hamilton Township, NJ

Client
American Standard

Services
Environmental
Natural Resources & Permitting


Keystone Industrial Port Complex

OVERVIEW
Langan has been providing strategic environmental and integrated land development engineering services for the redevelopment of the 2,500-acre former Fairless Works Complex, to accomplish the mutual goals of US Steel and a variety of alternative energy companies. All site challenges relating to environmental conditions, former structures, slag fill, and the natural resources issues of a major riverfront location have been addressed in accord with PA Act 2, One Cleanup, and other relevant state regulatory programs.

Location
Fairless Hills, PA

Client
Multiple Alternative Energy Clients

Service
Environmental


Hershey Facility – ACT 2 Closure Activities

OVERVIEW
The Hershey facility consists of approximately 78 acres in downtown Hershey, PA. Former operations at this facility included the manufacturing of chocolate and confectionaries from approximately 1905 to 2012. Langan initially conducted Phase I and II Environmental Site Assessment Activities in accordance with ASTM to support property transfer. Langan is currently conducting soil and groundwater characterization activities to support closure under Pennsylvania’s Act 2 Land Recycling Program at the former facility. Langan has also aided Hershey in discussions with the Pennsylvania Department of Environmental Protection regarding proposed Act 2 characterization activities necessary to demonstrate regulatory compliance.

Location
Hershey, PA

Client
The Hershey Company

Service
Environmental


Verizon Pennsylvania, LLC – Air Quality Permitting and Compliance

OVERVIEW
Verizon Pennsylvania LLC operates emergency diesel generators in central offices throughout Pennsylvania to maintain service in the event of a power interruption. Langan was retained by Verizon to investigate air quality permit requirements for emergency generators and boilers at over 350 facilities in Pennsylvania.

Location
Pennsylvania

Client
Verizon Pennsylvania, LLC

Service
Environmental Compliance


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


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


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


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


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


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


Stockton Events Center

OVERVIEW
Langan performed a multi-site expedited Remedial Investigation/Feasibility Study, developed a Remedial Action Plan, supervised the cleanup, and prepared the final report on behalf of the Stockton Housing and Redevelopment Agency. Previous uses of the parcels included bulk fuel storage, paint manufacturing, shipbuilding and repair, automotive repair, dairy product storage, and rail yards. The sites have been redeveloped with a sports complex, baseball stadium, hotel and retail stores.
AWARDS
2008 US Environmental Protection Agency, Phoenix Award for Excellence in Brownfield Development

Location
Stockton, California

Client
Stockton Housing and Redevelopment Agency

Services
Environmental
Geotechnical

Architect
Heinlein Schrock Stearns


Audit and Air Compliance Services

OVERVIEW
Langan provided environmental audit and air services related to odors for the City of Doral. Langan completed an environmental audit of the nearby landfill and waste to energy facility, recommended engineering controls for odor and presented findings to local environmental committees and to the city council.

Location
Doral, FL

Client
City of Doral

Service
Environmental Compliance


Ohlone Community College

OVERVIEW
The Ohlone Community College Newark Campus is a brownfields redevelopment on an 80-acre site. This was the first LEED Platinum College Campus. In addition to our environmental characterization work and analysis of remedial options, we assisted the District with negotiating a voluntary cleanup agreement with the Department of Toxic Substance Control. The cleanup was integrated with the development plans, allowing cleanup to be completed concurrently with the site grading and foundation preparation. Our geotechnical team performed a master plan and design-level geologic hazard evaluation and geotechnical investigation. We performed our services in compliance with the requirements of the Title 24 California Building Code, Division of the State Architect (DSA) for community college projects, and California Geologic Survey (CGS) advising checklist (Note 48) for California Public Schools. Our reports were submitted to DSA and CGS for review and were approved without exception.

Location
Newark, California

Client
Ohlone Community College District

Services
Environmental
Geotechnical

Architect
Perkins+Will


Related Santa Clara

OVERVIEW
The overall redevelopment site is the 240-acre former Santa Clara all-purpose landfill, and project plans are for a mixed-use development that includes office, hotel, retail, restaurant, entertainment, residential, and parking space. We are providing integrated site/civil, geotechnical, and environmental services for all project phases.

Location
Santa Clara, CA

Clients
Related Urban
City of Santa Clara, California

Services
Site/Civil
Environmental
Geotechnical


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


In-Situ Chemical Oxidation

OVERVIEW
Langan and Viasant performed an in-situ chemical oxidation (ISCO) entailing soil mixing of iron-activated persulfate at a site located in Northern New Jersey. The large-scale soil mixing activities were completed in April and May 2015.

Langan performed a bench-scale treatability study that evaluated three different persulfate activation methods: 1) sodium hydroxide activation, 2) quick lime activation, and 3) iron activation. Iron did not need to be added because of abundant the iron mineral magnetite in the site soil. Based on the treatability test results, soil mixing with iron activation using natural iron and additional iron-EDTA was selected for field implementation.

Under Langan oversight, Viasant completed ISCO remedial implementation consisting of blending approximately 150,000 pounds of sodium persulfate, 110,000 pounds of 25% sodium hydroxide, and 1,000 pounds of iron-EDTA into a 7,000-cubic-yard mixing volume over 13,500 square feet. A dual-axis mixing head enabled even and precise mixing and dosing. The clean overburden was removed before mixing and backfilled after mixing. Before final backfilling, the top 1-foot mixing zone was stabilized with cement to increase the soil strength.

The Langan/Viasant team implemented innovative risk management procedures to ensure success. Field treatability tests were conducted on-site daily to confirm the dosages buffer reagent (sodium hydroxide), because the rapid activation and reaction drove the soil pH lower during mixing. Samples were taken from each cell upon mixing completion, and their persulfate residual concentrations, pH, and iron levels were measured and evaluated against performance criteria immediately. The mixing cells that failed the criteria were remixed till performance criteria were met.

The performance monitoring results showed that target contaminants were reduced significantly without rebound after one year. Adequate dosage and complete contact results in the successful reduction.

Location
New Jersey

Service
Environmental


Former Manufactured Gas Plant (MGP) Sites

OVERVIEW
Langan has been investigating and designing remedies for former MGP sites under a Master Services Agreement first awarded in 1996 and renewed multiple times, based on Langan's exemplary performance.

Location
Various throughout New Jersey

Client
Confidential

Services
Geotechnical
Environmental
Data Management
Natural Resources & Permitting


Selected Projects