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Connell Resources Timnath Pit <br />Spill Prevention Control and Countermeasures Plan <br />Revision Date: June 25, 2009 <br />Section 16.0 Facility Drainage [112.8(b)] <br />Page 16-1 <br />Section 16.0 Facility Drainage [112.8(b)] <br />Areas of the facility with reasonable potential for oil spills (i.e., oil is used in the area) include <br />the following: <br />• Vehicle dispensers/pump islands <br />• Bulk loading and unloading area <br />• Secondary containment area with ASTs <br />• Emergency generator diesel fuel AST <br />16.1 Diked Area Drainage [112.8(b)(1)] <br />Diked storage areas along with the corresponding drainage methods at the Facility are <br />identified in Appendix B. <br />16.2 Diked Area Drainage Valves [112.8(b)(2)] <br />The drainage systems used on the secondary containment systems are positive <br />displacement type, not flapper valves. <br />After visual observation for contamination, facility personnel use valves to drain precipitation <br />from within the secondary containment systems to the adjacent ground. If the drained <br />precipitation doesn't evaporate or infiltrate into the soil, it will flow generally south to a <br />stormwater conveyence system that discharges to a detention pond located at the Facility. <br />After visual observation for contamination, facility personnel use pumps and hoses to drain <br />precipitation from withing the detention pond. The drainage from. the detention pond flows <br />south in drainage ditches located on the Facility. Appendix C contains the specific form and <br />standard operating procedure for inspecting, draining and documenting rainwater <br />accumulations in secondary containment areas. <br />16.3 Undiked Area Drainage [112.8(b)(3)] <br />Table 16.3 identifies drainage systems from areas of the facility with a reasonable potential <br />for an oil spill (i.e., oil is stored or used in the area). <br />Table 16.3: Area Drainage <br />Building or Area Name Drainage Method <br /> Sheet flow across the site to the <br />Fueling Dispensers detention pond <br />Diesel generator AST Fuel Sheet flow across the site to the <br />I unloading area detention pond <br />I14u11C - Ilu IIVVI UI PII I.