Langan

Environmental Remediation

Remedial Strategy

Marina Blue

Former Curtiss-Wright Aerospace Facility

City of Lodi Groundwater Contamination

Cascades Park Remediation

Air Products and Chemicals - South Brunswick

Mannington Mills

American Standard Former Trenton Pottery

BP Abandoned Production and Exploration Reserve Pits

In-Situ Solidification/Stabilization Pond Closure

Keystone Industrial Port Complex

LSRP-Directed Remedial System Optimization

Risk-Based Remediation/RCRA Corrective Action

Generated using GIS; Rockworks; EQuIS

"LNAPL" Modeling and Visualization

Generated using GIS; EQuIS; gINT

Former Koppers Superfund Site- Delaware

Mannington Mills - Landscape Architecture

Former Manufactured Gas Plant (MGP) Sites

Sunnyvale Town Center Mall Redevelopment

Texas Instruments Corporation

Contra Costa Waste Service Landfill

Historic Schlage Lock Manufacturing Facility

Chico Contaminated Groundwater Plume

Texas Instruments Corporation - Building C Remediation

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Langan is directing the remedial strategy for this site regulated under USEPA's RCRA program through an Administrative Consent Order. The facility is undergoing risk-based characterization and remediation to satisfy RCRA's Environmental Indicators and RCRA closure requirements.

Location: Confidential Mid-Atlantic Site

Client: Confidential

Services Rendered: Environmental

A Phase II ESA revealed petroleum contamination and free floating product (FFP). Langan conducted a site assessment in accordance with Chapter 62-770, FAC and managed the cleanup, removed free product, and monitored ground water. Langan’s geotechnical engineers designed high-capacity augercast piles to support the 57-story tower and tested the piles using an Osterberg Cell (O-cell), the first time ever that an O-cell was used to test augercast piles.

Location: Miami, FL

Client: Hyperion Development

Completion: 2008

Services Rendered: Geotechnical; Environmental

Langan is the primary environmental consultant to Curtiss-Wright on the remediation of a 156-acre former aerospace facility. Langan has redesigned the existing groundwater treatment system and updated the soil vapor extraction system, and is responsible for environmental compliance with the Industrial Site Remediation Act deliverables and permitting.

Location: Wood-Ridge, NJ

Client: Curtiss-Wright Corporation

Completion: Ongoing

Services Rendered: Environmental

Treadwell & Rollo, a Langan Company, is the City of Lodi’s Environmental Consultant for assessing and remediating groundwater contamination stemming from numerous former dry cleaning operations and industrial sites. We have represented the City in mediation with state regulators and potentially responsible parties, performed indoor air monitoring, collected deep soil and groundwater samples, characterized the extent of contamination, and installed a groundwater monitoring system. We also developed a City-wide groundwater flow and transport model to assess the interaction of several contaminant plumes and potential remediation approaches, and are designing a source area remediation program for the most seriously impacted area that will include both soil and groundwater remediation.

Location: Lodi, CA

Client: The City of Lodi

Services Rendered: Environmental

Langan provided design consulting and engineering oversight services for the $8 million Cascades Park Remediation Project, a coal gasification plant and landfill Superfund site that has been remediated by the City of Tallahassee under an Administration Order of Consent with USEPA. Langan prepared the Removal Action Work Plan, and developed design specifications and drawings for removing contaminated soil and installing a low-permeability liner within the excavated area for future use as a stormwater management facility.

Location: Tallahassee, FL

Client: WRS Infrastructure & Environment, Inc.

Completion: 2007

Services Rendered: Geotechnical; Environmental

Langan is planning, coordinating, and implementing site investigation and remediation activities at this 18-acre copolymer emulsions manufacturing facility, in accordance with New Jersey’s Industrial Site Recovery Act (ISRA).

Location: South Brunswick, NJ

Client: Air Products and Chemicals

Completion: Ongoing

Services Rendered: Environmental; Surveying; Data Management & Visualization

Langan is implementing a comprehensive remedial investigation at this 250-acre manufacturing facility to address and close numerous former waste treatment and disposal lagoons, and an industrial waste landfill.

Location: Salem, NJ

Client: Mannington Mills, Inc.

Services Rendered: Environmental

Langan's specialized expertise in environmental and geotechnical engineering prepared the former Trenton Pottery for redevelopment by designing innovative remedial measures to transform areas impacted by former operations into features that could be integrated into a future site redevelopment plan. Today, the American Metro Center, adjacent to the Hamilton Township NJ Transit station, is the cornerstone in the 1,000-acre Hamilton Township Redevelopment Zone.

Location: Hamilton Township, NJ

Client: American Standard

Services Rendered: Geotechnical; Environmental; Natural Resources & Permitting

Langan assisted BP with assessing and cleaning up abandoned production and exploration reserve pits located throughout the Greater Prudhoe Bay area of Alaska.

Location: Prudhoe Bay Area, AK

Client: BP Exploration

Services Rendered: Environmental

Langan's creative remediation approach to clean up the 760-acre site along the Delaware River included implementation of in-situ stabilization/solidification (S/S). This innovative solution ultimately saved the client nearly $6 million over more conventional forms of remediation.

Location: NJ

Client: Confidential

Awards: American Council of Engineering Companies (ACEC) - 2009 Engineering Excellence Award

Services Rendered: Environmental

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

Services Rendered: Multiple engineering and environmental services

As site LSRP, Langan is directing a remedial system optimization for treatment of a Trichloroethylene release at a former electronics manufacturing facility. A preliminary Conceptual Site Model developed a better understanding of the chlorinated solvent impacts, and a focused soil investigation determined the source area to be more extensive then the capacity of the existing remedial system. A series of innovative technologies, including in-situ thermal desorption, are being evaluated for eventual destruction of soil and groundwater impacts.

Location: New Jersey

Client: Confidential

Services Rendered: Source Area Delineation; CSM Development; Remedial Alternative Evaluation; Remedial System Optimization; Groundwater Monitoring

Langan completed a multi-million dollar site characterization and remedial program at a 350+ acres oil refinery in Region III. The project team had successfully negotiated with the USEPA and the PADEP to use Pennsylvania’s Land Recycling Program (Act 2) to address remaining RCRA issues at the site under the Facility Approach.

Location: Southeastern PA

Client: BP

Services Rendered: Environmental

This three-dimensional model and animation was created to illustrate contaminant mass flux beneath a former gas station.

Location: Northeast United States

Client: Confidential

Services Rendered: Data Management & Visualization

This three-dimensional model and animation was created using GIS, EQuIS, GMS, and gINT to visualize light non-aqueous phase liquid (LNAPL) beneath an active petroleum refinery.

Location: Northeast United States

Client: Confidential

Services Rendered: Environmental; Surveying; Data Management & Visualization; Permitting

A three-dimensional model and animation was created to illustrate dissolved phase petroleum concentrations in overburden groundwater.

Location: Northeast United States

Client: Confidential

Services Rendered: Data Management & Visualization

Langan has been retained by Beazer East, Inc. and approved by EPA as the remedial design consultant to implement pre-design investigations and lead remedial design efforts at one of Beazer’s highest priority sites: the Former Kopper’s Wood Treating Superfund Site in Newport, New Castle, Delaware. The Site is situated on 317 acres including approximately 136 acres of wetlands, three ponds, and surrounded on three sides by surface water.

Location: Newport, DE

Client: Beazer East, Inc.

Services Rendered: Site/Civil; Geotechnical; Environmental; Data Visualization; Natural & Cultural Resources

This project involved the mitigation and restoration of over nine acres of wetland and upland areas as a requirement of an EPA dictated clean-up action. The final design featured a freshwater forested wetland; two areas of tidal emergent wetland; a stormwater wetland; and a restored meadow/old field habitat in upland areas over capped environmental waste. Successful permitting and design of this site required close cooperation between landscape architects, natural resources/permitting staff, and environmental engineers from the initial design phase through the completion of construction.

Location: Salem, NJ

Client: Mannington Mills, Inc.

Services Rendered: Environmental; Landscape Architecture + Planning; Natural Resources & Permitting; Sustainable Design

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

Location: Various throughout NJ

Client: PSEG Services Corporation

Completion: Ongoing

Services Rendered: Geotechnical; Environmental; Data Management & Visualization; Natural Resources & Permitting

Treadwell & Rollo, a Langan Company, mitigated subsurface soil gas and groundwater contamination around the Sunnyvale Town Center Mall site. This area, approximately six square blocks, is slated for redevelopment as retail, commercial, and residential. Our geotechnical services included performing an investigation and providing recommendations regarding foundations for new structural elements, site seismicity, and seismic hazards.

Location: Sunnyvale, CA

Client: Downtown Sunnyvale Mixed Use, LLC

Services Rendered: Geotechnical; Environmental; Earthquake/Seismic

Treadwell & Rollo, a Langan Company, 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 and Santa Clara, CA; Puyallup, WA

Client: Texas Instrument Corporation

Services Rendered: Environmental

Treadwell & Rollo, A Langan Company, provided monitoring, remedial planning, and design of landfill closure services for this Superfund Landfill site. Decision analysis modeling and design for potential remedial solutions, risks and cost effectiveness analysis, compliance documents for Containment Zone Application, as well as storm and surface water sampling programs were also provided.

Location: Antioch, CA

Client: Contra Costa Waste Service

Services Rendered: Environmental

Treadwell & Rollo, A Langan Company, was retained to perform site-wide remedial investigation activities at the historic Schlage Lock manufacturing complex to be rezoned mixed-use commercial and residential. Interim Remedial Measures included excavation of sumps and contaminated soils, and the design and installation of a soil vapor extraction system to remove volatile organic compounds. All work was conducted under the review of the California Department of Toxic Substances Control (DTSC) and the City and County of San Francisco.

Location: California

Client: Schlage Lock

Services Rendered: Soil and Groundwater Investigations; Soil Vapor Investigation; Remedial Design

Treadwell & Rollo, a Langan Company, provided litigation support services in a case regarding the Central and Southwest Plumes, areas of groundwater contaminated with tetrachloroethene and its degradation by-products. The case involved numerous parties and the California Department of Toxic Substances Control.

Location: Chico, CA

Services Rendered: Data Management and Visualization

Soil and groundwater beneath a Texas Instruments semiconductor fabrication and research facility, were impacted with significant concentrations of volatile organic compounds. Treadwell & Rollo, A Langan Company, evaluated several remedial alternatives and in-situ chemical oxidation and soil excavation were selected. Concentrations were delineated and on a fast-track project schedule sections of the foundation slab were saw cut, VOC impacted soils removed, and a horizontal well system installed prior to backfilling for in-situ oxidation of residual soil and groundwater impacts.

Location: California

Client: Texas Instruments Corporation

Services Rendered: Remedial Alternatives Evaluation; In-situ Chemical Oxidation; Soil Vapor Extraction System O&M; Groundwater Monitoring

Technical Excellence. Practical Experience. Client Responsiveness.

a FINE site

Langan – Engineering & Environmental Services