Document 37yzrBz907Nv81y93a9pYpZ86

CAMBRIDGE TO: FROM: CC: J. McCarthy/Nashua T. E. Hamilton R. P. Cronin/Nashua WRG 000616 I PLAINTIFF'S ' ;JWRGl744:|; DATE: SUBJECT: 10 November 1980 Asbestos t M. Eschenbach and I collected asbestos air samples at aHocations at Nashua on 18 SEPT 80. Samples from the vermiculite cjtfHjB spray opera tion and from the third floor NTA plant show that asbtSwf^exposures normally do not occur in either area. I have made arrangements to take "total dust" samples in the vermiculite operation. We reconmend that the asbestos be removed from the ceiling of the NTA plant. Vermiculite Chelate Spray The asbestos fiber levels in this area are quite low when the individual samples are averaged over the entire shift. The following calculations of Time-Weighted-Averages (TWA) take into account the time when the employees are not exposed to any fibers, such as breaks and lunch. The present OSHA Permissible Exposure Level for fibers is 2.0 f/cc for an .8-hour TWA. OSHA also requires medical monitoring if the TWA is above 0.1 f/cc. Medical monitoring includes annual chest x-ray and lung function tests. Employee TWA David Christopher Jim Fitzpatrick Ron Cloutier 0.02 f/cc 0.02 0.01 The only problem that could change these TWA's would be if the employees were involved in trailer unloading for more than six hours. It is possible that the TWA would go above the 0.1 f/cc level and then we would be required to do the medical tests. Samples 8 and 10, taken on Fitzpatrick while he was dumping bags into the hopper, are very low at approximately 0.03 f/cc. The only job they do that is dusty is the unloading and I have made plans to take total dust samples on this job. NTA Plant - Asbestos Ceiling Stationery air samples were collected directly below the.ceiling area where the asbestos is peeling. The levels are so low that they are below \ R000529 j J. McCarthy 2- - the detection limit of the fiber counting method. However, asbestos is peeling off the ceiling and it is possible that some employees may be exposed to concentrations of asbestos. | We recommend that you consider removing the material. We are available to make recommendations on how to do this. In brief, the employees in volved in the removal would be required to wear airline Respirators and disposable uniforms. During the clean up, no other ee| es would be allowed in the area. For more details, contact HAE or. If. TEH/cs attachments T. E. Hamilton I R000530 X *01 MARGINAL run - CMCLSCA. MAG*. 08too TEL. 17-0*4-0*90 March* Ur. Warren Rood V. R. Grace Co., Inc Poisson Ave. Nashua, N. E. 03060 Re: Asbestos Removal Dear Ur. Rood: Thank you for allowing us to bid on your project. V* propose to sijpply all necessary equipment, permits, notifications, personnel, supplies and Insurances for this project. METHOD Our method includes a plastic barrier to separate area now occupied by workmen from contaminated area, sealing of any ventilators, protection for the electrical system, shower for workmen. With our system, we create a negative pressure inside the work area with our giant vacuum system so that no inside air-%in escape to other areas of building or to the outside, lien with hoses will vacuum material from overhead. Uaterial will peas through our special machine called the "Ecmogenizer" which will transform the asbestos into a liquid declaring it inert. (See brochure). When asbestos has been removed, we will completely wash entire area -- walls, celling, floor and remove all water and dirt and fines as fast as we wash with our washing system shown on brochure as Part 2. TIME 1 day sat up at site -- 8 hours. 2 days or lass for complete removal; cleaning -- 16 hours CREW 5 men 1 foremen 1 operator FOUNDATIONS PILE DRIVING UNDE*WATER CONSTRUCTION I *00053J ' ELECTRONIC INSPECTIONS W. R. GRACE CO. 2 March 31, 1981 CI3TIFICATES Hazrdous Waste Manifest will be documented and sent to you at end of proje so that you will know what happens to asbestos for your $Ues. It is understood that out price does not include dump fees and -that said fees if any as well as arrangements will be made by you for dump site, approximately 3 miles from job. Thank you, JFW/hgf JAMES F. WALTON Vice President 1 R000532, 9 i liiiilh l Three Stage Compressor delivers xoo cw at an operating pressure op 272* rater Cloth Bag Filtering System effectively separates pine dust particles such as FLY ASM. ROCK DUST. ETC. FROM OTH THE COMPRESSOR 20 Cubic Yard Body AND THE ATMOSPHERE OTHER MATERIALS ^ R000533 y Wt can vacuum oust, oravei. coal, stones, cmoers. meui twig* ciams mussels, oil sodis water, cemem oust, pustr ana anytnmg tnai wRi lit mto 8 men noses, ana carry n tar as 800 teet mto a waning trues GRACE ik Chemical* Dmtwn W.R Grace i Co Poiuon Axanuc Nothue. N.H 03061 (603)888-2320 I April 1, 1981 Mr. Barton Mayer Bureau of Solid Waste Management Health & Welfare Building Hazen Drive Concord, NH 03301 Dear Mr. Mayer: We have a situation at our Nashua, NH site that requires your agency's approval to dispose of an asbestos containing insulation. The Material was sprayed on the underside of a roof in Building #8 on the plant site to act as insulation. The contractor who is going to remove the material does it with a wet vacuum system and estimates that he will have 30 cubic yards of slurry when he is finished. We have contacted the Nashua Landfill and they see no problem with disposing of it at their site. They requested 3 days notification prior to receiving the material. As you requested, I have attached the procedure used by J.F. Walton t Co., Inc. to safely remove this material. If you have need of further information, please call me at (603) 888-2320. Very truly yours, f. J.B. McCarthy ^ Assistant Plant Manager /jm Attachment R000534 c PLANT:, NASHUA, .NUMBER .oai I^WiViWkM ROUTING OPPOSITE NAME FOR APPROVAL RFBachinlffi 4k(il 7. RPCronin. TRANS rvi 0C^ ptv. 8 ht sco ebl i DHChapmvL**1* J DRCuss _ i JBMcCarthy^'SjO a DJFlynn W/ a 10. 11. HMLuz JFKCCMasnanl inghani^1^^^ 1 NEW TRANSACTION TYPE LEGEND 3 COST ALLOCATION CHANG! i CREricksoi 2 COST ESTIMATE CHANGE 4 M8CEULANEOUS CHANGE PMfetonis' apprc RLBuCRiwaS MAKEGOOO report ENTER "Y" * RfOUMEO ESTIMATED COST (DO NOT ENTER CENTS) RCA ORIGINATOR W *' RKE EQUIPMENT CHECK LABOR OTHER COSTS U-M 6890 AUTHORIZED -wanpaMiasgaa AUTHORIZED DATE TOTAL ESTIMATED COST 890 CONDENSED TITLE: MAXIMUM OF 45 SPACES n>rn ON dcpt. ACCOUNT MMIR 9 P o f t f \ ESTIMATE of SAVINGS OR INCREASES M GROSS MARGIN. OESCRIFTION OF WORK -- TO K DONE. SRIAKOOWN OF COST ESTIMATES (WHEN SHOP ORDER MCLUOCS BELOW DOTH CAPITAL ANO EXPENSE ACCOUNTS. INOICATS SRSAKDOWN SY MSSRTWG TOUT AFTER EACH ITEM.I 5 040" X5-040-W-310.: 10C kk *1 This shop order is to cover the cost to remove the asbestos insulation from the underside of the NTA plant roof. 10 When the last addition of the NTA plant was built in 1970, the Inside of the roof, which was designed differently from the rest of the plant, was spray insulated. Until recently. It was not known that it contained asbestos. It ' is well known that asbestos is a health hazard and should be removed. As we are not equipped or knowledgable in this area, an outside fins (Walton Systems) who specializes In asbestos removal, has quoted a price for the removal. This firm guarantees the safety of plant personnel by Isolating the area. Once the job has started. It must be finished on a continuing basis. All appropriate agencies have been notified and an approved landfill site has been chosen for disposal of the asbestos slurry. Quoted costs (Walton Systems) Contingency 5% $ 6565.00 325.00 G TOTAL 5 6890.00-- I R000535 -* -V ' Documentation of official permission to dispose of this i teriai at arAuthorized landfill is attached to the original of this Shop Order. ESTIMATOR Rood, Warren DATE 4/1/81 WERE QUOTATIONS OR ESTIMATES obtained from central PURCHASING DEPARTMENT? mCZD no im W KLu L) :VA:: r:*8i