School District Ball Fields Development
(Lake Chelan, WA) Landau Associates provided environmental consulting services to the Lake Chelan School District to assist them in addressing arsenic and lead soil contamination on a newly acquired 30-acre property, which historically contained apple and pear orchards, to be developed into ball fields. Additionally, Landau Associates assisted the school district in the application and award of an Integrated Planning Grant to fund the cleanup effort. Services included characterizing the extent of soil contamination on the property, including the collection and analysis of 75 soil samples from shallow surface soil and soil from test pit excavations to identify the vertical and horizontal extent of the contamination. Landau Associates worked with the project architect, construction manager, and the Washington State Department of Ecology (Ecology) project manager to develop and implement cleanup actions based on remedial cost comparison and efficiency of implementation, which included a combination of soil excavation, capping, restricted access areas, an educational program, institutional controls such as a restrictive covenant, and health and safety measures to protect site maintenance workers during construction of the ball fields. Landau Associates created a construction monitoring and confirmation sampling plan with Ecology which used an X-ray fluorescence device to provide on-site, same day analytical results to evaluate the soil excavation and grading activities without stopping or delaying project work. We then evaluated compliance by evaluating confirmation data for lead and arsenic to the Model Toxics Control Act data analysis requirements and statistical methods. Once property remediation and construction was completed, Landau Associated submitted the cleanup report to Ecology for approval, and the ball fields were successfully completed and are now used by the public and school district.