Document oeNLyMZN3OrnLLy7X9wnBNBM8

FILE NAME: WR Grace (WRG) DATE: October 12, 1970 DOC#: WRG330 DOCUMENT DESCRIPTION: 1970 Inspection Report from Oregon State Board of Health AT f i B0Am0^raA^H| ^^>vfeYjfei.oFPirP.;;RF.Pn'RT.' fip n rrtT P attov arvtrr at'ru?< wmrn .... Kp M^ g ; " m ^: ,, t F l e W ^. tM e& ;sK*1 5 3 5 :N.E. 9th clpAddress.'. 8 Cr n Portland, Orogon 25/ *970 by Lynn M * Colabaak_____ /_____ ' eSIC: 'i -v-is--...^4* V v 5 ; 1 i : - m -- i-- - ^ ~ - m k .. ^v^Pprsons Sppn- Jac5c Bjrk*ftr Job Super.; Dick Cronn/' Jr., Contractor ' " : . . ^''Insurance Carrier: ~. * ' ' .. Visit Basis: Self-initiated _ _ Request by Jack Ross O.D. Rep. . R evisit. O th er. Nature of Health Problem Asbestos Total Persons Employed_ Number Involved I t Location Technical Study Type of Service G iv en ---- Schedule For Followup: No . Yes. . D a te . NARRATIVE: ' ' Mr. Jack Rosa, Business Agent for tho Plasters Local 82 O.P. 6 C.M.Z.A. informed us that his men would be spraying a compound called Monocoat t i on tho steel beams on the First National Tower. We contacted Mr. Bob Randall, the local sales representative concerning the asbestos content and the application method of Monocoat. This product contains approximately 60% gypsum, 30% Vermiculite, and 10% asbestos fiber by weight. It is being fomulatod and bagged at tho Zonolite Plant on North Harding Street here in Portland. It will be shipped to the job in 39-pound paper bags. They apply approximately 300 bags per day. At tho job site general procedure is as follows: Mixer man opens bags and adds water to keep two mixers and two pumps in operation. The two pumps move the slurry typo mixture through parallel pipe line3 to the two spray men working in the tower. It is a water solution from the time it leaves the mixers until it gets to the nozzle man. At the nozzle, compressed air is added to blow the slurry into place. A field visit was made to the site on the afternoon of September 25 and four breathing zone samplers were attached to the mixer men, the nozzle men and to the hod carrier. It was observed that the mixer men and one of the nozzle men were wearing a 3-M type dust mask. The mixer men appeared to be getting the majority of the dry dust and the hod carrier appeared exposed to some dry dust because he was scraping the fall clown off the floor. Copies to: x W C B -------- x ----- LHD ------ OTHER ----------OH-20 -12-B6 I 1 3 ( o^ - M . ,. This is 'a soft, foamy substance that sticks readily to the steel beams. They apply two coats which will accumulate about 1 1/2 inches of covering on the boara. Mr. Randall supplied us with some studies on previous applications of this material. The studies showed the mixer men and nozzle men to be getting the maximum exposure but all exposures were below the TLV. LM.C/cg OREGON STATE BOARD OF HEALTH STATE OFFICE BUILDING 1400 S. W. 5th AVENUE PORTLAND, OREGON 97201 Billings and Cronn 1535 . E. 9th Portland, Oregon ' . Dear Sirs: On September 25 1970 a technical study was conducted at your field job site in the First National Bank Tower. The purpose of this study was to determine the workmen1s exposure to Asbestos fiber and dust. Six battery operated portable puops used in conjunction with breathing sone samplers were operated for about 100 minutes while the spraying of Konocoat was in progress. These sample vnre submitted to our laboratory for analysis and the results tr* shown on the following tbl*. Position Name Hixur Operator Honil-jmun Noszlcmun Hod Carrier Threshold Limit D .nii.Tson tetto Hitts Arcouetto Valufs Asbestos in fibers pur milliliter . Dust in milligrams p*r Mi-ter-"________ A. 6.60 Threshold Limit Values have been established for air-borne contaminants. These values are commonly referred to os T.L.V.'s and represent the maximum safa vala for air-borue contaminants to which a workman may b< exposed sight hours a day, forty hours .- week without detrimental effects to his health. y comparing the results obtained from the tests with the T.L.V. value shown on the bottom line, it muy be seen that the exposure on the day of my visit was well below the currently accepted limits for asbestos and dust. TtUphone: Art* Cod 503; D*yi--226-2161; Aftr Hur-222-i500 Milling Addrtii: P. C. Bo* 231, Portland, Oregon 97207 1 Lynn Colebank State of Oregon Highway Division 2 885 Airport Road, SE, Bldg. 35 Salem, OR 3 4 Mr. Colebank is an engineer who worked as an Industrial 5 Hygiene Engineer for the Occupational Health Section of the Oregon 6 Board of Health at the time the First Interstate Bank Tower was 7 built. Mr. Colebank will testify about his background, education, 8 and work with the Occupational Health Section. 9 Mr. Colebank will testify that he conducted tests on 10 behalf of the State Board of Health measuring airborne asbestos 11 levels during construction of the First Interstate Bank Tower. Mr. 12 Colebank will testify that those tests showed that the workers 13 involved in applying Monokote spray-on fireproofing were exposed to 14 airborne asbestos fibers at levels well below the existing 15 Threshold Limit Values. Mr. Colebank will testify that the test 16 results convinced him that no remedial measures were required and 17 that he so informed the contractor responsible for the spraying. 18 - M hour. 19 20 21 22 23 24 25 26 PAGE 5 - DEFENDANT'S REVISED WITNESS STATEMENTS . LPPORT1 J:\CL1\RWR\WRGRACE\13291RWR.PLD L ane P ow ell Speaks L ubersky SUITE 800 520 SW Yamhill Street Portland, Oregon 97204-1383 (503) 226-6151