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Mr. Dustin Czapla 17 <br /> CDRMS <br /> September 24,2021 <br /> b. Details regarding how the concrete foundation and containment structures <br /> were designed and built, including any coatings applied to the floor and or <br /> walls. <br /> Response <br /> The structure was designed and built under the authority of the Lake County building <br /> department, with the appropriate permits and inspections. Coatings will be applied to areas <br /> such as floors and sumps which will potentially see chemical laden liquids. <br /> c. If available, provide any QA/QC documentation for the construction. <br /> Response <br /> No QA/QC other than a Certificate of Occupancy exist for the older parts of the structure, but <br /> inspection reports for newer construction are available, along with drawings certified by <br /> professional engineers. <br /> d. Drawings and narrative of piping and delivery systems of designated <br /> chemicals, verification that the entire length of delivery lines exist within a form <br /> of secondary containment. <br /> Response <br /> Piping within the structure will be protected by secondary containment, and pipes passing <br /> between the main building and the leach area will be double walled. Any vessel will be <br /> protected by a sump, equal or greater in volume than the largest vessel in the area. Should a <br /> major leak occur for the leach tanks, secondary containment will be the TSF, which is directly <br /> adjacent to the leach tanks, via a pipe. Detailed drawings of piping routs will be supplied upon <br /> completion of the design. <br /> 2. Secondary and tertiary containment structures <br /> a. Details regarding the secondary containment structures. This should include <br /> calculations demonstrating maximum containment volumes of each area, as <br /> well as details regarding sump systems and where they report to. <br /> Response <br /> The main building stair steps down a natural slope, which allows us to employ a sump at the <br /> lowest point of the building. This sump is sufficient to contain the volume of the largest vessel in <br /> the building. This sump, if overwhelmed by a catastrophic rupture event, ultimately reports via <br /> pipe to the TSF. The sump will be able to contain approximately 6,800 gallons, which is larger <br /> than the largest vessel (See Volumes Table 4). <br />