R311-204-4. Closure Notice

(a) Owners or operators of underground storage tanks which were permanently closed or had a change-in-service prior to December 22, 1988 shall submit a completed closure notice, unless the tanks were properly closed on or before January 1, 1974.

(b) Owners or operators of underground storage tanks which are permanently closed or have a change-in-service after December 22, 1988 shall submit a completed closure notice form and the following information within 90 days after tank closure:

(1) All results from the closure site assessment conducted in accordance with Section R311-205, including analytical laboratory results and chain of custody forms.

(2) Effective January 1, 1993, a site plat displaying depths and distances such that the sample locations can be determined solely from the site plat. The site plat shall include: scale, north arrow, streets, property boundaries, building structures, utilities, underground storage tank system location, location of any contamination observed or suspected during sampling, location and volume of any stockpiled soil, the extent of the excavation zone, and any other relevant features. All sample identification numbers used on the site plat shall correspond to the chain of custody form and the lab analysis report.

(c) Owners and operators of underground storage tanks that are temporarily closed for a period greater than three months shall submit a completed temporary closure notice within 120 days after the beginning of the temporary closure.

(d) All closure notices for permanent and temporary closure shall be submitted on the current approved forms.