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Published byMagdalene Patrick Modified over 8 years ago
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CLEAR ANC ANC ES
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Two main elements of a Clearance 1.Visual examination
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Two main elements of a Clearance 2. Environmental Sampling
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garage living room bedroom 1 kitchen bedroom 2 bedroom 3 porch bath laundry SAMPLE HOME 1951 Ranch 2 adults 3 kids (ages 17, 15, and 2)
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Clearance Scenario #1: All windows replaced in living room (LHR) Contractors removed windows from exterior after facing the interior with poly sheeting Replaced front threshold (LHR) L.R.
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living room front steps How many clearance samples and where?
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After abatement with containment, the risk assessor shall take 1 dust sample from 1 window, if available, and 1 dust sample from the floor of not less than four rooms, hallways, or stairwells within the containment area. In addition, 1 dust sample from the floor outside the containment area. If there are less than 4 rooms, hallways, or stairwells within the containment area, then all rooms will be sampled. [R 325.9917(b)(i)]
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How many clearance samples and where? 4 1 2 11 10 8 7 9 6 5 3
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Clearance Scenario #2: All windows replaced in living room (LHR) Contractors used area containment Replaced front threshold (LHR) L.R.
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1 2 4 5 How many clearance samples and where? 3
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Clearance Scenario #3: All windows replaced (LHR) Occupants relocated No containment
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After abatement with no containment, the risk assessor shall take 2 dust samples from not less than four rooms, hallways, or stairwells. One dust sample from 1 window, if available, and 1 dust sample from the floor of each. If there are less than 4 rooms, hallways, or stairwells, then all rooms will be sampled. [R 325.9917(b)(ii)]
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4 12 8 7 6 5 3
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D A B C 5’ minimum Now, after cleanup, where will the clearance samples be taken? Visual
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Window replacement Exterior removal Interior faced with plastic ??????????
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