Liesch developed a demolition plan for all internal structures to be removed as part of the renovation prior to a complete building cleaning. This process would minimize re-contamination risk when compared to cleaning occurring before demolition. Liesch developed the building cleaning specification, which included asbestos removal, chemical and equipment removal, and building cleaning. The specification also included a clearance program outlining clearance standards and testing requirements. During the cleaning process, it was determined that select areas associated with mercury impacts could not be effectively cleaned and an encasement program was necessary. Liesch identified an appropriate product for encasement and coordinated the encasement and subsequent testing of the areas of mercury impacts to document the encasement eliminated the exposure pathway. The site was subsequently cleaned from top to bottom and corner to corner to remove impacted dust as part of the final cleaning. Liesch completed clearance testing at the site and documented that the site was clear for the renovation contractors to safely complete the project.