The objective of this project was to perform a site investigation (SI) at the Federal Aviation Administration (FAA) Lake Hood Storage yard. SI field activities include field screening and collecting analytical samples in areas of suspected petroleum, polychlorinated biphenyls (PCBs), and possibly metals contamination. Additionally, debris was removed from the site in order for the Learn More
Ahtna Environmental, Inc.
Ahtna Environmental Inc. (Ahtna) was contracted to conduct a release investigation and demolition of the Federal Aviation Administration (FAA) Katalla Very High Frequency (VHF) facility in Katalla, Alaska. The two primary objectives were: 1) Decommissioning of all known infrastructure associated with the Katalla VHF Facility. 2) Performance of a release investigation of surface and subsurface Learn More
Ahtna Environmental, Inc., (Ahtna) was contracted to replace the air conditioning systems which required mechanical and electrical system renovations to the fifth floor. Additionally, minor mechanical improvements were required on the fourth floor, where the life-critical equipment is located. Rainfall caused rapid surges in the creek during construction work, dismantling fish fences and pumps and Learn More
The objective of this remedial action was to locate, remove, and dispose of abandoned transformers at the Federal Aviation Administration (FAA) Biorka Island site and remove associated impacted soil. The remedial action included: removal and containerization of two transformers; excavation of impacted soil located beneath the transformers; collection of soil samples at excavation limits for Learn More
This project took place at the National Oceanic and Atmospheric Administration (NOAA) Hawaiian Islands Humpback Whale National Marine Sanctuary (HIHWNMS) Visitor Center. The Visitor Center was built in 1942 and was formerly used as a general administration building. The building had many original components, such as the shiplap siding and framework. The building is located Learn More
Ahtna Environmental, Inc. (Ahtna) was challenged during renovations to a fish passage located underneath the Yakutat Highway, Alaska. Rain events, maintaining open fish passage, controlling traffic flow, and avoiding impact to fish in the creek were the most complicating factors. Rainfall caused rapid surges in the creek during construction work, dismantling fish fences and pumps Learn More