Document dndqNkDReYVmBk0DXnxnad125

FILE NAME: Scotts (SCTS) DATE: 1972 June 9 DOC#: SCTS017 DOCUMENT DESCRIPTION: Results of Fiber Sampling with Data PLAINTIFFS EXHIBIT SCO-1 W. R. G r a c e a C o . in d u s t r ia l c h e m ic a ls g r o u p GZ WMITTEM OR C AVC.,C A MQR ID C C, MA C S. 0 2 1*0 June 9, 1972 Mr. Richard Gruenbaum Project Leader Environmental Engineering O.M. Scot: & Sons Marysville, Ohio 43040 Dick: . Attached are the results of the fiber sampling done on 30 and 31 May. As you will note, all fiber counts, with one exception, were well below the present TLV of 5 fibers per ml and below or very close to the 1S76 TLV of 2 fibers. The exception was the 6t'n level of the furnace area'where the sample indicated 8.3 fibers per ml. Apparently, the ' heat rise and exhaust fans at this level tend to concentrate fibers as well as visible dust. I suggest evaluation of the problem by further sampling at the 5th level and lower'levels. In the interim, if anyone is required to spend more than a very brief period of time at the 6th level, a respirator is suggested as a precautionary measure. The 2.1 fibers at the discharge end of the t i l drier indicate that thg drier room is an area where more extensive testing is advisable. I doubt if there is a problem but further data should be obtained. I an sending separately, the clips and more sampling heads. Also, Frank-Serafin, our Laboratory Director, is preparing instructions for constructing a simple apparatus to calibrate your air sampling pumps. Our thanks again for your hospitality. assistance, please call. If we can be of further < P / . . . - C. / C > ^H.A. Eschenbach H A E :mh Enclosures cc: F.A. Eaton DOJWRG 00519 O.M. SCOTT & SONS MARYSVILLE. OHIO 1 d o^ c% ir op TEST TO t>A'V ~ f/9 /? U Sample 9 SC 1 sq 2 Operation, or Location Turf Builder Bagging Rode Bagging Fibers Per Ml (Greater than 5 microns in length)_____ *4 .4 SC 3 SC 4 SC 5 SC 6 SC 7 SC 8 4 ` Furnace Area 2.1 1st Floor Stoners Furnace Area 8.3 6th Level Furnace Area . .... 4th Level 1.4 . . Furnace Area . 1.9 2nd Level Control Room 0.0 Discharge End of 2.1 Drier #1 H A--1 Is? r a 'y \ Remarks Difficulties with bagging equipment contributed to dust levels. ii ii ii ii t n n ii it it ii SC DENH003042