Document 7OqpDrM45LDE81E42wY3G88ej

4. *' r.,1 ' - -'"/Si' ~ /A > < ' s Ok GI A- PAD l PI tdP /Z': Z t/'' ' ' JPjNTcftCCPARTMENTAL COMMUNICATION ^ o t. V> T Q/ Mfnn Belov; a/" " Ar from: F. fink SUBJECT: y cornoi, ] TlOOTtA7-' .+ i date; February u, 1973 ' LOCATION; , location; Tigard To: *K. Pro'.vTi - Acme A. ialmowski - Chicago J. T>\ Pn\ich - A'cron V. Fsvero - I arietta )i. V. Tcharf - Milford H. V.`. Boole - Yilnington Gypsum i i r Hichardc - Tigard b! Hollingsworth - ''ilminrton C. Lohnert - Tigard this copy (T\\ ' o wish to call your attention to the ruler- and regulations offactive January 7, 1973* ivpc attached. ' There are several clauses that arc not clear and v;e expect a ruling very shortly. The rule as it.rc-ferr to porting arena where counts are above allowable threrhhol-d limits ir one. 1/* point Gothic type is rather small print, . a pproxinuxtc1 y 3/1 -n 'Th o typc n 1 r.os specified arc minimum, v.g recommend larger type. Incidentally, \;e liavc had surveys conducted in ail plants. Gcnp.rally speaking the counts based on Tiber counts, 5 microns or larger are below the allowable limit. Two areas or . operations where limits .arc exceeded, loading hopper . during shaking and operator dumping bags. In addition often the bags are filled and toppled over. The spout v.'ill contain mall amounts of the mix which are released when the bag is toppled. The dust counts 'more extremely high, and it v.*nr/'difficult to determine the fiber counts or length of fibers. Vo recommend that signs be pasted in the joint system areas as instructed on Pago 11321, Also wearing of respirators must be strictly enforced. label specifications. You will be notified by R <1 D bow this -will bo handled. Vhile preparing this letter one of the joint system.plants has been inspected by Ch;!A. fight hour air tests were taken, also other clauses were discussed. The plant should receive a report in 3 or A weeks, also recommendations to correct any violation*of the regulations. You will bo informed of the recommendations and how they shall bo applied in yoir operation. GP0003451