NYC Law Department release
Independent mirror · updated as the City releases more · v1.3.3
☕ Buy me a coffee
← Document results/DEP Box 43/E-mails 2002 M. Gilsenan
Document / 5 pages

Proposal for central air system cleaning inquiry, April 2002

Machine-extracted title · confidence 90%

Correspondence regarding a vendor proposal for industrial vacuum cleaning systems and cost investigation in April 2002.

NYC-WTC_000163759–000163763

Folder label: “E-mails 2002 M. Gilsenan”

Page image
Scanned page image, NYC-WTC_000163761
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

EPRInc

-2-

Method of Cleaning

Our industrial central vacuum cleaning system (mobile) is the best system on the market for cleaning both the exterior and interior of the buildings at the W.T.C. site. Through the closed pipe system, the dust-laden air is removed entirely from the working area, to the central system where the dust is separated from the area through a Simatek pulse-jet filter.

The high vacuum makes it possible to install several himdred meters of pipes in one system and to collect and convey even heavy materials such as cement, steel, sand, glass, iron cuttings, process waste, etc.

There are 80 installations operating, collecting 100% of the following.

Fly Ash Malt Dust Fiber Glass Dust Fishmeal Dust Paper Dust Office Dust Grain/Flour Dust Protein Dust Wet Wood Chips Dye stuff Dust Metallic Oxide Pellet Dust Sugar Dust Tobacco Dust Plastic Dust Fiber Dust Soap Dust Pet Food Dust Cement Dust Com Dust Glass Dust Feed Dust Seed Dust Steel/Iron Dust

Select a group of four adjacent buildings and allocate three mobile vacuum units to each building. Two for exterior cleaning and one for interior cleaning, each capable of handling up to three 5” suction lines with a range of 900 feet. The operators will start at the top and vacuum to the bottom, material is collected through the vacuum filter systems preventing any particulate fi-om returning to the atmosphere into a collection dumpster. The units will be relocated as required to completely clean the building.

After vacuum cleaning the existing ductwork in the buildings, install ADM units in the ductwork to ensure continued clean air.

Procedure: Prior to cleaning each building the company’s engineering staff will determine the best method for cleaning that building.

22 Mainline Drive, Westfield, Massachusetts 01085 (413) 572-6900

NYC-VVTC_000163761

OCR can misread numbers and units. Confirm readings against the page image before using them.

NYC-WTC_000163761Source: NYC Law Department, mirrored locally

Related records

Browse subjects →

Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.

Same-box records

Filed elsewhere

More like this page

Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.

Others also read

Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.

Compare copies and versions →