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Conveyance Piping:'/" Galvanized Pipe, Schedule 40, <br />steel <br />Diaphragm Pumps: <br />Waste Oil Pump: Polypropylene and PVDF (Kynar) <br />Used Coolant Pump: Polypropylene and PVDF (Kynar) <br />(B) Material thickness: <br />Waste Oil Tank Primary Containment: <br />0.125" per consultation with manufacturer <br />Waste Oil Secondary Containment: <br />30 mil, per manufacturer's specification <br />Used Coolant Tank: 0.125" measured by micrometer. <br />Gasoline Service Hose: 0.162" wall industry standard thickness. <br />W Galvanized Pipe: 0.113" standard wall thickness <br />(C) Tank Piping: Gasoline Service Hose, synthetic rubber composite, <br />3/4"o ID. Galvanized Steel Pipe, W ID, 1.050 OD <br />(D) Internal & External Pumps: <br />Internal Pumps: None. <br />External Pumps: <br />Two 1" Graco "Husky 1040" pneumatic diaphragm pumps <br />connected to suction hoses are used to transfer materials from <br />portable collection drums into the waste oil tank or the used <br />coolant tank. They are located in a steel cabinet adjacent to the <br />storage tanks. <br />(E) Tank Drawings: See Appendix A and B <br />(3) Age of <br />This facility first opened for business in 1991 <br />Therefore, at the date of inspection the installation had been in service <br />for 19 years. <br />(4) Leak Detection Equipment: <br />