Shooting Site Terrestrial Ecological Evaluation

(Black Diamond, WA) Landau Associates provided environmental and natural resources services to assist a confidential timber company in evaluating a former gravel pit and surrounding areas that had been contaminated with lead and carcinogenic polycyclic aromatic hydrocarbons (cPAHs) due to unauthorized target and skeet shooting activities near Black Diamond, Washington.

Landau Associates conducted background research, site reconnaissance, and preliminary soil sampling to evaluate site environmental conditions, and summarized the results in a Site Characterization Report. In addition, we completed a Terrestrial Ecological Evaluation (TEE) to identify wildlife species present at the site, the home ranges of those species, and the likelihood of those home ranges to extend into the contaminated portions of the site. The TEE allowed for a more accurate determination of appropriate cleanup levels at various areas of the site. TEE data was incorporated in the Cleanup Action Plan (CAP) and Engineering Design Report we prepared in accordance with Washington State Model Toxics Control Act (MTCA) standards. The CAP and EDR were approved by the Washington State Department of Ecology. Landau Associates’ future services on this project will include oversight of the site remediation and site restoration activities. It is the intention of the owner to transfer the site to King County after cleanup has been completed.