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C. d-_roround Tants (cptional) fac4lit4es , i.e. , tanks installed after 2Znu2r- '. . Describe the containerent s; s _..c _..b a. All items specified in item VI . S. , =. a . and b. above. b. Capacity of the containment s;•stem relative to r.=ber and volume of underground stcraze tanks (secondary container must cor.tai: at least " n', pe-:cent of the volume of the primary container cr .re there is only one primary container in the secondary container. In the case of multiple primary containers , the secondary container must contain 150 percent of the volume of the largest primary container cr 10 percent of the aggregate internal volume of all primary containers) . Storage facilities that, are o7en to ra_nfal. m.:st have arseconda�. container that also accor..-:Odates pre:i.itatior. �_oa a ?�+- hour, 100-year storm. 2 . `ionitoring systems . a . Describe monitoring 'system, including: (1) Visual inspection; (2) Pressure , hydrostatic , and pressure testing; (5) Groundwater monitoring wells ; and (4) Leak detection system. b. Describe procedures to ensure that existing facilities (tanks installed prig: to January 1 , 198.0 have a moni- toring system in place on or before July 1, 1985 . 3. Describe procedures to ensure that before the underground red, enclosed, or placed in service , the tank is tan}: is cove tested in accordance with the rational Fire Protection Associ- ation, Pamphlet 329 , " ee.-cm-.ended Practice for :?::ndling Underground Leakage of Fla•:.mable and Combustible Liquids" for determining integri=y of tank and connecting pipes . D. Treatment -- describe processes , equipment, re3ctions , effici- encies involved in treatment of hazardous wastes . Examples include: 1 . Chemical treatment. a . Acid/caustic stripping• I .A. l .b -56-