ADEC – Groundwater Monitoring – Gaffney East

Ahtna Engineering Services, Inc. (Ahtna) performed additional characterization at the Gaffney Road East contaminated site in fall 2013 under contract to the Alaska Department of Environmental Conservation (ADEC). Contaminants of concern (COCs) include tetrachloroethene (PCE) and its degradation products trichloroethene (TCE), and cis- and trans-1,2-dichloroethene (cDCE and tDCE). The results Read more…

ADEC Gaffney Road West

Ahtna Engineering Services, LLC (AES), provided services to mitigate, remediate, and ensure the long-term management of human health risks associated with chlorinated ethene vadose zone soil and groundwater contamination at the Gaffney Road West Site in Fairbanks, Alaska. AES has managed sub-slab depressurization/soil vapor extraction (SSD/SVE) system operations, monitoring, and Read more…

USCG Warehouse Upgrades

Ahtna Engineering Services, LLC (Ahtna) verified the total project requirements and existing conditions including dimensions for renovations to the warehouse annex and commissary. Tasks included resurfacing the warehouse floor/battery charging area in the warehouse annex. For the commissary, tasks included: Relocation of roll-up door/security gate assembly. Assembly of two new Read more…

USCG Petersburg Floating Dock Repair and Replacement D/B

Ahtna Engineering Services, LLC (Ahtna) has self-performed Regional Multiple Award Construction Contract (RMACC) services under an ID/IQ contract for the U.S. Coast Guard (USCG) including design-build construction, performance-based construction, general construction, marine construction, demolition, historical restoration, design, and design and construction to LEED standards. Other services included environmental engineering and Read more…