Document 6brrE4rBvXqDMagR2oLG2321o

a \ - ` UiAKr 36 22:ot ' ID:UfiNlKRFfiK3800 Ff: PAGE Z AR226-2021 WASHINGTON WORKS C-B INDUSTRIAL HYGIENE WORK ROLES, PROTECTIVE CLOTHING, RESPIRATORY PROTECTION, ETC, LIQUID C-S AIR MONITORING BLOOD MONITORING RJZ007180 i E ID 1 3 6 9 5 7 \J1S\JS" 30 C.C,-Ol 1 L r-.U IIM iC W H A O 'O O O rH A* PHtat ' 3 WASHINGTON WORKS AIR SAMPLING RESULTS PERSONAL SAMPLES OX - <107. AEL 10% - <50% AEL 50% - <100% AEL 100% AEL TOTAL 1993 34 8 0 1 43 1994 40 14 3 0 57 1995 18 14 1 0 32 AREA SAMPLES 1993 SO 1994 43 1995 25 PERS (0OHH5) system used to determine where personal samples are needed. t S12T used to determine sampling frequencies, usually 90, 180, or 360 days. Area samples have support role, identifying locations where C-8 levels are high. RJ2007181 E ID 1 3 6 9 5 8 01^05 *98 22:52 ID:lfSNIERFRX3800 FOX'. PAGE 4 BLOOD MONITORING THIS IS THE ONLY MEASURE HE HAVE OF TOTAL EMPLOYEE EXPOSURE PROBLEMS t BIOPERSISTENCE HAKES DATA INTERPRETATION DIFFICULT SAMPLING IS INVASIVE LENGTHY ANALYSIS IS RUN BY ONLY ONE LAB NO AEL RIZ0Q7182 E ID 1 3 6 9 5 9 ni^'umruu'nivygw PHA. PAGE 5 C-8 IN BLOOD - HISTORICAL 1978 1979 1980 1981 1982 1990 1993 1995 Informed by 3N that C-8 is found in the blood of exposed workers and persists for a long time. C-8 found in blood of DuPont workers, Workers with blood c-8 found to have normal liver function, Birth defects scare - additional sampling. Blood program continues on voluntary basis - no trends noted. Formal review of blood data. Journal Of Occupational Medicine study of 3N workers. First 5-year "snapshot", ^uooznj E ID 1 3 6 9 6 0 01/05 '9S 22'*53 ID'.UWERFfiX38Q0 PAGE 6 1990 C-8 INDUSTRIAL HYBIBIE DATA REVIEW (HA Smith, J6 Loschiavo, RD Lanyon, HE Crawley) CONCLUSIONS (Recognizing the data limitations). There is a correlation between blood and air C-8 levels that is confused by dermal exposure. Exposure at the AEL of 0.56 mpb would result in a blood level of about 3 ppm. Background blood level for the Teflon* area is between 0.1 and 0.5 ppm. . .. .... Dermal- exposure- Is the cause for higher blood levels. Half life for C-8 in blood is about 4 to 5 years. - Annual blood testing is not useful and should be replaced by "snapshots" at longer Intervals. RJZ007184 E ID 1 3 6 9 6 1 01/05 *96 22:53 1DiLfiNIERFRK3800 4 FAX: PAGE 7 1995 C-8 It) BLOOD SNAPSHOT PURPOSES Monitor the overall effectiveness of our C-8 industrial hygiene programs. Create and maintain a continuous data base for epidemiologic surveillance of our exposed population. Provide closure for Issues raised by the 1990 data review. Honor employee reguests for voluntary testing. TEST POPULATIONS Employees in C-8 jobs (82 of 140) Employees not in C-8 jobs with a previous result >3 ppm (9 of 12) Pensioners with a high previous result (9 of 19) Volunteers (18) RJZ007I85 E ID 1 3 6 9 6 2 t U l/U S ' SO ' iU-UHNlEKf-miliW _ >RX: PAGE 8 RESULTS SUMMARY - OPERATORS JOB 08PE 08PF 08PH 06PI 08PJ 08PM 18PA 18P8 1SPC 18PD 18PJ 18PK DESCRIPTION autoclave polykettle dispersion FP finishing FP packout C-8 dryer recovery FEP polykettle FEP extruder/oven FEP wet finishing FEP packout PFA/FEP bead FEP safety/dlsp 1995 ' AVERAGE fn) 2.3 (7) 2.6 (6) 0-5 (2) 2.0 (6) 0.7 (7) 1.7 (2) 2.3 (4) 1.5 (6) 3.0 (1) 0.1 (4) 0.7 (2) 2.1 (2) 1989 AVERAGE in) 3.0 (4), 7.0 (3) 2,5 (3), 8.5 (1) 1-0 (2). 7.1 (1) 2.0 (6) 0.5 (3) RESULTS SUMMARY - MECHANICS 58MC S8HD 58HG 68MA 68MB FP/dlsp/gran/TA general shift process ESI general shift FEP ESI 1.4 (1) 1.1 (8) 0.8 (7) 1.1 (5) 0.9 (7) RJZ007186 E ID 1 3 6 9 6 3 I Cl/05 '96 22:54 ID:LAN1ERFAX3800 FAX: PAGE 9 OTHER OBSERVATIONS 1. VOLUNTEERS a) one of 17 is above 1 PPM b) Average o f o th er 16 i s 0*4 PPM 2. ACTIVE EMPLOYEES WITH PREVIOUS HIGH RESULTS In C-8 job not in C-8 job Down Same Up 234 621 3. THREE EMPLOYEES OVER 3 PPM FOR THE FIRST TIME /.8T/(107f>r EID136964 vi'v/y- ou c c 'u h x m i.H i'a t.rtTH A -sou'J m; T O t 10 PATH FORWARD Finish Data Analysis Employee Communication Site Industrial Hygiene Efforts Toxicology Work (Do we need a BE!?) Continue Annual Voluntary Testing Take Another Snapshot In 2000 RJZ007I88 E ID 1 3 6 9 6 5