A. In accordance with the Pennsylvania Flood Plain Management Act and the regulations adopted by the Department of Community and Economic Development as required by the Act, any new or substantially improved structure which will be used for the production or storage of any of the following materials or substances or which will be used for any activity requiring the maintenance of a supply [more than five hundred fifty (550) gallons or other comparable volume or any amount of radioactive substances] of any of the following materials or substances on the premises shall be subject to the provisions of this section, in addition to all other applicable provisions:
1. Acetone.
2. Ammonia.
3. Benzene.
4. Calcium carbide.
5. Carbon disulfide.
6. Celluloid.
7. Chlorine.
8. Hydrochloric acid.
9. Hydrocyanic acid.
10. Magnesium.
11. Nitric acid and oxides of nitrogen.
12. Petroleum products (gasoline, fuel oil, etc.).
13. Phosphorus.
14. Potassium.
15. Sodium.
16. Sulphur and sulphur products.
17. Pesticides (including insecticides, fungicides and rodenticides).
18. Radioactive substances, insofar as such substances are not otherwise regulated.
B. Within the Floodway Fringe (FF) or General Floodplain (FA), any structure of the kind described in Subsection A shall be:
1. Elevated or designed and constructed to remain completely dry up to at least one and one-half (1 1/2) feet above the one-hundred-year flood; and
C. Designed to prevent pollution from the structure of activity during the course of a one-hundred-year flood. Any such structure or part thereof that will be built below the regulatory flood elevation shall be designed and constructed in accordance with the standards for completely dry floodproofing contained in the publication Flood-Proofing Regulations (United States Army Corps of Engineers, June 1972), or with some other equivalent watertight standard.
