INPOQ* Al* QUAi n A MECUANiCii. Hysseke .
Mr. Peter Hoyle I
Novemba'27,2001
Page 2 of 6
Eouipoit t and Mattariai Sc^acifioi^ans
I TechClean shall supply all equipment and materials necessary for the cleaning of the
toilet and genera exhaust'systems and the air-handling systems at 22S Rector Street Ail
chemicals utilized in this process shall have the MSDS submitted to Related Management
for approval befcre usage.
2, Debris coliiictioc equipment shall be ixxrtable in size to enter the occupied space.
3. Electrical requinmients.will be coorjinated through Related Management. TechClean
will supply a 22>volt pigtail tiiat will be installed by Related Management's in-house
electrician.
4. Collectors thall be fen .powered high efftcieney, dust and particle coUection systems.
They shall be HEPA filtered, 99.97% efficient at .3 microns at 12.000 cubic ft. per
minute. ‘J
5. TechClean shall take all necessary precautions to prevent dirt and debris from entering
die candlticned s?ace,
6. The colleciioa systems shall be self-contained to adequately capture dirt and debris
loosened from th i upstream ducts, ms ins and branches during the cleaning process.
Agitation
I. Ductwork shall be cleaaeci, coated, tud sanitised by inserting au air powered extended
whip section, air powered oscillating brushes and electric robotic air powered brushing
systems.
2, Utilized equiptnertt shall be the best to contact clean all surfaces of the air duet regardless
of shape and size.
3. Cleaning tools s job as pipper ball! or air sweeps will not be used because of dieir
inability to conUit clean all sides of the duct ;
4. Where the ductwork is enough and able to support the weight of a technician hand
tools and HEPA vacuum 99.97% eSktent at J microns shall be used.
5. Technicians; entering the inside of the ductwork and air handling units will follow OSHA
Confined Sipace Requirements OSHA 29 CFR 1910 1.46 and OSHA Respiratory
Protection Program OSHaCFR 1926.SS Appendix C.
An air compressor shall be used. Electrical requirement shall be coordinated through
Related Management. Compressor shall be capable of 180 PST at 25 CFM.
7. All access instated in the ductwork ithall be SMACNA style cam lock insulated access
doore. No patches win be.Used.
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NYC-WTC_000139984
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000139984Source: NYC Law Department, mirrored locally
EPA transmits revised statements of work for WTC cleaning and monitoring activities incorporating modifications and additions discussed in interagency meeting.
Draft document outlining procedures for asbestos removal and HEPA vacuuming in residential buildings south of Canal Street following the World Trade Center collapse.
Internal memo expressing concerns about advising residents of potential health risks from 15 months of unrealistic HVAC assessment and cleanup, requesting urgent decision-making.
Memo requesting EPA ensure factual information about HVAC matters be prepared for presentation at meeting with City officials, FEMA, and public communications consultant.