Office of Air Quality, New Source Review Program Mechanical Section Policy Memorandum þÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ Date: December 20, 1994 No.: 16 From: Wesley Smith Approved by: Gary Wallin, P.E. Subject: Standard Exemption No. 94 þÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ Policy: Equipment used in the soil stabilization facility are covered by the exemption. Background: If a soil stabilization plant is involved in petroleum based soil remediation (stabilization), crushers and screens can be associated with the operation since this equipment is considered to be an integral part of the process. Soil stabilization cannot occur if there are clumps of material, and therefore the crusher/screens are necessary to break up the petroleum contaminated dirt in order to establish a consistent mixture. This equipment does not require a separate exemption/permit. The soil from this type remediation is inherently low in dust and should pose little problem when being crushed and screened. Necessary Action: None cc: All Mechanical Section