Document OZJXJQN7q40B8LwngRjD3QN1

j/l fcLt&Md CC: l). G. Windsor. FRi) A,K.. C. V. Cooley, ERD Thatcher, CSD PLAINTIFF'S EXHIBIT DUP-3004 April 16. 19B4 ^ftSul. J. G. PAGE, JR. ,(R ,YV^X^ 4J. F.. MARTIN y.i*U < `{tMtrtU j<r Here Is some Information you requested recently: "und Asbestos Air Monitoring Departmental industrial hygiene coordinators for several r.er.ts were contacted to determine what airborne asbestos monitoring has one in plant process areas where undisturbed asbestos is present. The ::rerslve study was done at Chambers Works. Several hundred samples ktr. across the plant on all shifts. All results were below 0.05 L; most were below 0.03 flber/ml, the sensitivity of the monitoring This data is available if needed. Victoria performed similar sampling in 1978. Forty-two samples Vi. ikcr. in laboratories, office buildings and process areas. Thirty-eight re; ; were reported as nondetected (less than 0.01 flber/mL). Five vere in t'~ -zc of 0.01 to 0.19 fiber/mL. Three samples vere taken in an area Vi. .rer.slte was present in 1982. The highest result was 0.01 flber/ml. Savannah River Plant has taken several asbestos background samples, V. 're all reported as nondetected (less than 0.05 flber/mL). Several other sites including Cape Fear and Old Hickory have ci around the perimeter of asbestos removal operations and havs c results below 0.1 fiber/ml, some below 0.01 flber/mL. Hwildings Monitoring is performed routinely under normal conditions in i:--, Montchanin, Bank of Delaware and Girard Bank buildings. Since \`f samples have been taken. One sample was reported as 0.02 -.D. No asbestos fibers were detected in any other samples, iviry of the method is 0.01 fiber/mL. Monitoring is performed when large areas of ceiling tiles are This is done at night and results have been low (less than 0.05 . . Monitoring is not done when only a few tiles are removed. This > such a short tine period chat the air sample would be too small to 'scr.able sensitivity. DUP 0501562 DU 001301 2 No calling tilts currently In these buildings are known to contain as' ~s. L. V. Thatcher thinks It Is possible that some old glued-on as s celling tiles might contain asbestos. This Is checked before rt Monitoring was performed In a Parlln Office Building which has tr. -f> calls. No airborne asbestos was dateetad (i.a., less than 0.1 fl. Cc ricr.s Process araa monitoring data lndicatsa there would ba vary few, if ar. ~s5 where sites would have to take additional action In workplaces co nir.g undisturbed asbestos to 'meet a PEL of 0.1 fiber/mL. More sites should perform background monitoring In worst case s: --.cr.s co confirm this conclusion. If any workplace is found to exceed 0. action should be taken to meet this level. Monitoring data for office buildings indicates good control and no p- to meet an exposure limit of 0.1 fiber/mL. J' 1 DUP 0501563 DU 001302