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WORK SITE PLAlT <br /> Methyl Bromide C: BUFFER ZONES <br /> Commodity Fumigation Enclosure Type Determination <br /> The information in this section is used by the County Agricultural Commissioner to determine <br /> the size of the buffer zones for each enclosure at the work site. Complete this section for each <br /> encl�osur_e, unless the answers to all of the questions for all enclosures are the same. <br /> Retention C.1. Is the enclosure a vacuum chamber? YES NO <br /> Category <br /> Determination C.2. Does the enclosure pass the USDA YES NO <br /> pressure test? <br /> C.3. Has the enclosure been retention tested YES NO <br /> according to DPR-approved procedures? <br /> Aeration Category C.4. Does the enclosure use an exhaust stack YES NO <br /> Determination for aeration? <br /> If question C.4 is answered 1VO, go to question C.12. <br /> C.5. What is the exhaust stack's height above <br /> ground level? Use lowest stack if more than 1. 3� feet• <br /> C.6. Is the top of the exhaust stack at least 10 <br /> feet above the enclosure's highest point? YES NO <br /> C.7. Is the top of the exhaust stack at least 10 <br /> feet above all major obstructions (building, YES NO <br /> silo, orchard) within 200 feet of the stack? <br /> C.8. What is the rated fan capacity or air flow <br /> rate of the exhaust fan for this enclosure �4; o o cubic feet per <br /> (combine all fans if more than one)? minute <br /> C.9. What is the stack cross-sectional area for <br /> this enclosure (combine all stacks)? 1,7 square feet <br /> area of circle=3.14 x radius2 <br /> C.10. Divide the value from question C.8 by <br /> the value from question C.9. This is the exit feet per minute <br /> velocity. <br /> C.11. What is the largest amount of methyl <br /> bromide that will be used for the entire work pounds <br /> site in a 24-hour period? <br /> 26 <br /> 8/8/94 <br />