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' CAh1A5 Colorado, Inc. • ~ pagc 9 <br />Aggrega[e Pmducdon Facility Stomwatcr Managemrn[ Plan <br />MANAGEMENT AREA WHERE DATE OF <br />PRACTICE EMPLOYED PRACTICE EMPLOYED IMPLEMENTATION <br />VEGETATION MANAGEMENT <br />Buffer Strips Open, vegetated fields exist on the Current <br /> eastern, northern, and southern <br /> portions of the property <br />Other (describe) <br />WATER MANAGEMENT: (Interim Measures) <br />Sedimentation Pond(s) The open pit is the lowest point or the Current <br /> entire property. All stormwater runoff <br /> water and wash water accumulates <br /> there prior to CPDS permitted <br /> discharge <br />Other (describe) <br />WATER MANAGEMENT: (Permanent Structural Controls) <br />Intiltration Area Due to the nature of the facility and Current <br /> the surrounding substrate, <br /> considerable stormwater infiltrates the <br /> ground before it is able to become <br /> runoff <br />Site Grading Most of the disturbed areas of the Current <br /> property are graded such that all <br /> stormwater runoff eventually end up in <br /> the open pit <br />Fuel Storage Adequate secondary containment will <br /> be implemented for all fuel/oil storage <br />3.b.2.1 stormwater Diversion <br />In order to prevent possible stormwater contamination, stormwater is generally <br />diverted away from the central processing plant where the majority of potential <br />pollutants are located (see Figure 2). Except for stormwater which directly contacts <br />industrial materials (i.e., fuel, lubricating fluids, processing plant, etc.), all other <br />