Phase I & II Environmental Site Assessment: Former Agere Semiconductor Facility

Perform environmental due diligence activities to support the purchase of a 195-acre semiconductor manufacturing site. The site included 1.07-million square feet of manufacturing facilities and 300,000 square feet of support facilities. Investigations were to include testing for both hazardous materials and petroleum products.

A Phase I Environmental Site Assessment (ESA) was performed, which included:

• Review of site physical characteristics.
• Review of reasonably ascertainable historical information and previous environmental reports prepared by others.
• Review of environmental record sources maintained by federal, state, and local regulatory agencies.
• Performance of a site reconnaissance, including a visual inspection of adjacent sites.
• Performance of interviews with local government representatives and with site owners, operators, and managers.

The Phase I ESA revealed 13 recognized environmental conditions (RECs) in connection with the site. To address and mitigate these RECs, the following tasks were performed as component parts of a Phase II ESA:

• Collect soil and chemically analyze 13 soil samples.
• Install 23 temporary groundwater monitoring wells; collect and chemically analyze samples from these wells.

• HSA Golden’s Phase I and II ESA were sufficient to support the purchase of the facility.  The manufacturing and support facilities have since been demolished, and approval has been obtained for 4.5 million square feet of commercial and industrial use, with structures up to 35 stories tall.