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MiscellaneousCZ YUNTSONROE KEY WESTRIDA 33040 (305) 294 4641 Engineering Department P. O. BOX 1029 Key West, Florida 33040-1029 Mr. Lawrence Michaels, Esq. Lawrence Michaels & Associates Suite 600 1700 Walnut Street Philadelphia, Pennsylvania 19103 Re: Asbestos Abatement, Stock Island Dear Mr. Michaels, BOARD OF COUNTY COMMISSIONERS Mayor Pro Tem Wilhelmina Harvey, District 1 Gene Lytton, District 2 Douglas Jones, District 3 Mike Puto, District 4 MAYOR John Stormont, District 5 Public Service Building Please be advised that the air filtration plan for the above project has been changed. A Negative Air System will no longer be used thus your client's patent rights will not be violated. If you have any questions, please contact this office. Sincerely, gaa David S. Koppel, P. E. Director of Engineering cc: Dent Pierce Danny Kolhage Randy Ludacer DSK/lgs ASBESTOS.LM ATEC Environmental VConsuffants marril 5, 1990 Division of ATEC Associates, Inc. Client #: 408 9955 N.W. 116th Way, Suite I Project #: 98055 Miami, Florida 33178 (305) 882-8200, FAX # (305) 882-1200 Mr. Mike Lawn Monroe County Engineering Department P.O. Box 1029 Key West, Florida 33041-1029 RE: Alternative to Negative Air filtration System - Stock Island Asbestos Abatement Job Dear Mr. Lawn: Solid & Hazardous Waste Site Assessments Remedial Design & Construction Underground Tank Management Asbestos Surveys & Analysis Hydrogeologic Investigations & Monitoring Analytical Testing / Chemistry Industrial Hygiene/Hazard Communication Environmental Audits & Permitting Exploratory Drilling & Monitoring Wells After reviewing the attached air filtration plan by Southeast Environmental Contractors, we have approved the system contingent upon the following: 1.) ALL other parameters addressed in the specifications are to remain unchanged; 2.) Initial smoke testing must be conducted to assure constant Positive air flow into the work area and daily surveillance will be conducted thereafter; 3.) A rubberized seal, or similar material, must be used at the solid door entrance and its seal will be closely checked frequently. If we can be of further service in this matter, please call. Sincerely, ATEC ASSOCIATES, INC. :R�04 �-- Boyd K. Turner Department Manager Industrial Hygiene Services Attachment cc: Robert L. Lubart - SEC 2/mm/c:1/408-98055 A Subsidiary of American Testing and Engineering Corporation Consulting Environmental, Geotechnical and Offices in Major U.S. Cities/Since 1958 Materials Engineers SEC Southeast Environmental Contractors ASE8ESTOS MATEMENT & ENCAPSUTATIC)#,4 IN ACCOPDANCE WITH EPIC Stondoros Robert J Ankn9y President March 3, 1990 ATEC Environmental Consultants Division of ATEC Associates, Inc. ATTENTIONt BOYD K. TURNER 9955 N.W. 116 Way Suite #1 Miami, Florida 33178 Telephone: (305) 728-9044 (Broward) SUBJECT: ASBESTOS ABATEMENT - PUBLIC SERVICES FACILITIES (STOCK ISLAND), MONROE COUNTY, KEY WEST, FLORIDA ATEC PROJECT NO. 98055 RE: AIR CONTROL SYSTEM BY SOUTHEAST ENVIRONMENTAL CONTRACTORS, INC. Gentlemen: This "unique" Air Control System has been developed by Southeast Environmental Contractors, Inc., for exclusive use by Southeast Environmental Contractors, Inc. Southeast Environmental Contractors, Inc., has determined that the standard asbestos abatement methods used most often by the majority of asbestos abatement contractors, while considered "state of the art", however, do not effectively "control" the ambient air that is being brought into the containment. Neither do these methods assist nor support the control of the fibers that are being released next to the workers. While Negative Air Systems supposedly prevent fibers from exiting from locations other than pressure differential exhaust, they also cause problems in the durability of the poly walls and floor. Once the poly is pulled loose and it is not readily located, the chance of major contamination increases and is more likely. 2303 W. McNob Rood • Pompono Beach, FL 33369 • (305) 971-5992 . 971.6406 . 1-BW-533-5992 FAX (305) 971-9979 SEC Southeast Environmental Contractors ASBESTOS'ABATEMENT 6 ENCAPSULATION IN ACCORDANCE WITH EPA Standards RobertJ Ankney President page 2 of 2 In developing our Air Control System we have accomplished much more than solely satisfying the requirement of preventing outside contamination. This System enhances the work area by immediately collecting airborne fibers, or if you will, channeling these fibers away from the workers, where these fibers will then be trapped at a distance away from the worker. Furthermore, by not using Negative Air, we are not depending on the capability of the poly to withstand a stress test that if failed would result in an outside contamination. We are insuring the integrity of the poly by not subjecting it to Negative Air, thus the poly may stand and perform its intended job and prevent any leakage that might arise due to a power failure, or otherwise. one of the more important advantages of this system is its ability to have cleaner inside air much more rapidly than normally accomplished. This would lend to another great benefit in that worker comfort would greatly increase, which of course would reflect a better quality job. There would be other obvious benefits attributed to worker comfort. The advantages of using the Southeast Environmental Air Control System, or "SHACS", would greatly appear to out weigh those of using Negative Air methods. The only supportive argument for the use of Negative Air Systems, has been that while work is in progress, air can come in but it cannot get out. This of course changes the instant that the poly seals become ripped loose or their integrity is damaged, do to none other than the Negative Air itself. Please accept this concept as a viable alternative to using the Negative Air System in performing the asbestos abatement at the above captioned facility, as will be executed in the contract between Southeast Environmental Contractors, Inc., and the owner, the Monroe County Engineering Department, Key West, Florida. Please do not hesitate to call me if you have any questions regarding this matter. Thank you for all your assistance and Cooperation. Sincerely, Robert L. Lubart General Manager attachment (diagram) 2303 W. MCNab Road • Pompano Beach, FL 33069 . 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