Langan

Environmental Remediation

Former Curtiss-Wright Aerospace Facility

City of Lodi Groundwater Contamination

Cascades Park Remediation

Mannington Mills

American Standard Former Trenton Pottery

Keystone Industrial Port Complex

Former Manufactured Gas Plant (MGP) Sites

Sunnyvale Town Center Mall Redevelopment

Contra Costa Waste Service Landfill

Schlage Lock

Chico Contaminated Groundwater Plume

National Semiconductor Corporation - Building C

Back

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 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 provides strategic environmental consulting services, land development engineering, geotechnical engineering and permitting services to accomplish the mutual goals of US Steel, alternative energy clients, and redevelopment interests via the Pennsylvania Land Recycling Program and Pennsylvania–Region III United States Environmental Protection Agency One Cleanup Plan Program.

Location: Fairless Hills, PA

Client: Multiple

Services Rendered: Multiple engineering and environmental services

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 and Alameda County Waste Management Authority

Services Rendered: Geotechnical; Environmental; Earthquake/Seismic

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

At Schlage Lock’s historic San Francisco manufacturing plant, Treadwell & Rollo, A Langan Company, was retained to remediate contamination under the review and authority of the California Department of Toxic Substances Control and the City and County of San Francisco.

Location: San Francisco, CA

Client: Schlage Lock

Services Rendered: Environmental

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

Treadwell & Rollo, a Langan Company, has been providing environmental engineering services for National Semiconductor Corporation's Building C site since 2004. Soil remediation was performed to mitigate contamination that had originated from past microchip research activities.

Location: Santa Clara, CA

Client: National Semiconductor Corporation

Services Rendered: Environmental

Technical Excellence. Practical Experience. Client Responsiveness.

a FINE site

Langan – Engineering & Environmental Services