Laserfiche WebLink
ERI Consulting, Inc. <br /> <br /> and following the completion of the day's abatement <br /> activities. Document inspections and observations in the <br /> daily project log. <br /> <br /> 3.1.5.3 Damage and defects in the enclosure system are to be repaired <br /> immediately upon discovery. <br /> <br /> 3.1.5.4 Use smoke tubes to test the effectiveness of the barrier <br /> system when directed by Owner's Representative. <br /> <br /> 3.1.5.5 At any time during the abatement activities after barriers <br /> have been erected, if visible material is observed outside of <br /> the work area or if damage occurs to barriers, work shall <br /> immediately stop, repairs be made to barriers, and <br /> debris/residue cleaned up using appropriate HEPA vacuuming and <br /> wet mopping procedures. <br /> <br /> 3.1.5.6 If air samples collected outside of the work area during <br /> abatement activities indicate airborne fiber concentrations <br /> greater than 0.01 f/cc or pre-measured background levels <br /> (whichever is lower) work shall immediately stop for <br /> inspection and repair of barriers. Cleanup of surfaces <br /> outside of the work area using HEPA vacuums or wet cleaning <br /> techniques may be necessary. <br /> <br /> 3.1.5.7 Install and initiate operation of negative pressure <br /> ventilation equipment as needed to provide one air change in <br /> the work area every 15 minutes. (See Section 2.2.1.1). A <br /> sufficient amount of air must also be exhausted to create a <br /> pressure drop of 0.02 inches of water within the enclosure <br /> with respect to the area outside the enclosure. Openings made <br /> in the enclosure system to accommodate these units shall be <br /> made airtight with tape and/or caulking as needed. If more <br /> than one unit is installed, they should be turned on one at a <br /> time, checking the integrity of wall barriers for secure <br /> attachment and need for additional reinforcement. Insure that <br /> adequate power supply is available to satisfy the requirements <br /> of the ventilating units. Negative pressure ventilation units <br /> shall be exhausted to the outside of the building whenever <br /> feasible. They shall not be exhausted into occupied areas of <br /> the building. Twelve inch extension ducting shall be used to <br /> reach from the work area to the outside when required. <br /> Careful installation, air monitoring and daily inspections <br /> shall be done to insure that the ducting does not release <br /> fibers into uncontaminated building areas. <br /> <br />-- 4/11/03 63 <br /> <br /> <br />