Phase I Environmental Site Assessment National Bison Range

Challenge Vieau Associates/GZA was commissioned to complete a Phase I ESA to support the transfer of 18,800 acres of federally owned native grasslands and forested low-rolling mountains in Montana to federal trust ownership for the Confederated Salish and Kootenai Tribes. At the center of the Flathead Indian Reservation, the National Bison Range had been managed … Read more

Scannell Properties Warehouse Development

Challenge Melick-Tully and Associates, a Division of GZA GeoEnvironmental, Inc. (GZA), was retained by Scannell Properties to provide environmental and geotechnical engineering services for a large site being redeveloped into a 215,440 square foot warehouse facility. A 45-foot grade differential added complexity to the geotechnical engineering design.  Solution To support the developer’s due diligence, GZA … Read more

Phase I ESAs of Unconventional Gas Assets

Challenge An international energy company contracted GZA to conduct ASTM 1527-13-compliant Phase I Environmental Site Assessments (ESAs) at 20 unconventional gas facilities spread across 63,000 acres in several counties in Pennsylvania. These sites included horizontal gas wells, impoundments, compressors, and storage tanks. The client required a three-week reporting turnaround. Solution GZA developed a secure online … Read more

Phase I ESAs of Conventional Oil and Gas Wells

Challenge To manage environmental liability for oil and gas properties it was purchasing, Antero Resources contracted GZA to conduct ASTM 1527-13-compliant Phase I Environmental Site Assessments (ESAs) of 179 conventional well locations and ancillary facilities such as compressor stations and tank batteries. The turnaround time was less than three weeks. Solution GZA quickly mobilized two … Read more

Hudson High Voltage Direct Current (HVDC) Converter Station

Challenge GZA was asked to provide geotechnical services and environmental studies for Siemens Energy, Inc. for its proposed Hudson High Voltage Direct Current (HVDC) Converter Station in the New Jersey Meadowlands, part of a transmission project intended to convert the power between New Jersey’s Public Service Electrical & Gas (PSEG) 230 kV grid and New … Read more

Phase I Environmental Site Assessment Underground Mine and Open Pit Quarry

Challenge For this Phase I assessment, Vieau Associates, a division of GZA, applied the ASTM Standards E1527 and E2247 to assess a 30-year-old permitted mine operation encompassing 1,363 acres. At-surface aggregate crushing operations comprised just a fraction of the land area encompassing an extensive network of underground limestone mine tunnels reaching hundreds of feet deep. … Read more

370 Lexington Avenue Level I Property Condition Assessment

Challenge A confidential client was considering the building located at 370 Lexington Avenue in New York, NY for an acquisition. However, the building was 77 years old, with 26 stories and a floor area of 290,000 square feet. Before an acquisition process could confidently commence, the client needed to know the overall state of the … Read more

Competitive Power Ventures, Inc., Three Rivers Energy Center

Challenge Competitive Power Ventures, Inc. (CPV) consulted with GZA to provide environmental and regulatory guidance as it developed Three Rivers Energy Center, a planned 1,250 megawatt (MW) natural-gas-fueled electric generating facility. Solution Initially, GZA conducted a review of the previous environmental consultant’s work and provided a summary of federal, state, and local regulations and associated … Read more

Former Manufactured Gas Plant (MGP), Site Remediation

Challenge In 2010, when coal tar was detected in the harbor adjacent to a former manufactured gas plant (MGP) site, GZA was retained to analyze the preliminary site investigation data previously collected. The redeveloped site now spans upland and in-water properties owned and operated by several different entities. GZA’s services expanded as client’s needs grew … Read more