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REGULATION 8 ORGANIC COMPOUNDS RULE 40 AERATION OF CONTAMINATED SOIL AND REMOVAL OF UNDERGROUND STORAGE TANKS (Adopted July 16, 1986) 8-40-100 GENERAL 8-40-101 Description; The purpose of this Rule is to limit the emission of organic compounds from soil that has been contaminated by organic chemical or petroleum chemical leaks or spills; to describe an acceptable 5011 aeration procedure; and to describe an acceptable procedure for controlling emissions from underground storage tanks intended for removal. 8-40-110 Exemption, Stowage Pllesi Calculations of aeration volume under Section 8-40- 204 shall not include storage piles that are covered per Section 5-40-303; nor shall they include active storage piles. 8-40-111 Exeoptior+, Excavated Holc: The exposed surface of an excavated hole shall not be included in calculations of aerated volume under Section 8-40-204, 8-40-112 Exemptiont, Sampling: Contaminated soil exposed for the sole purpose of sampling shall not be considered to be aerated. Removal of soil for sampling shall not qualify a pile as "active." 8-40-113 Exemption, Non-volatile Hydrocarbons: The requlrem.!nts of this Rule shall not apply If the soil Is contaminated by a known organic chemical or petroleum liquid, and that chemical or liquid has an initial boiling point of 302OF or higher, provided that the soil is not heated. 8-40-200 DEFINITIONS 8-40-201 Active Storage Pile: A pile of contaminated soil to which soil is currently being added or from which soil is currently being removed. Activity must have occurred or be anticipated to occur within one hour to be current. 8-40-202 Aeratkin; Exposure of excavated contaminated soil to the air. 8-40-203 Aeration Depth: The smaller of the following: the actual average depth of contaminated soil; or 0.15 meters (0.5 feet) multiplied by the daily frequency with which soil Is turned. The exposed surface area Includes the pile of excavated soil unless the pile is covered per Section 8-4o-303- 8-40-204 Aeration Volumes The volume of soil being aerated shall be calculated as follows: the exposed surface area (in square feet or square meters) shall be multiplied by the aeration depth. 8-40-205 Contaminated Soil; Soil which has an organic content, as measured using the procedure in Section 8-40-602, exceeding 50 ppm(wt). 8-40-206 organic Compound: Any compound of carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates and ammonium carbonate. 8-40-3 JULY 16, 1986