Document NGJyjRMx8GrypOZVabXQv6KLV

INDUSTRIES To: F. C. Delw 2. G. Bell INTER-OFFICE CORRESPONDENCE Date. March 2, 1977 From. P. J. Snyder Location. 10 West Subject. Revised VDC Monitorinq Summary Please find attached a revision of my initial sunnary of the Division's Vinylidene Chloride (VDC) Air Monitorinq Data that is presently available. This re-evaluation was conducted to determine the degree of compliance with three specific levels of VDC, 1.0, 2.5, and 10,0 ppm. The available monitoring data suggests that the plants are generally within the present guideline of 10 ppm, but over either 1.0 or 2.5 ppm (TWA). Lake Charles data show 12% over 2.5 and 22% over 1.0 ppm, overal 1. Based on a limited amount of information, the 3 jobs of highest anticipated exposure have 63% over either 1.0 or 2.5 ppm (TWA). /ale Attachment P. J. Snyder SL 084885 MAR 02 J977 Environmental Affair INTRODUCTION Based on available personnel ami area air monitoring data, an evaluation was conducted in order to ascertain the impact of a 1, 2.5 and 1.0 ppm Vinyl idenc Chloride Standard, (VDC). 'I h i s ini oi m.tL ian his been cat egorI zed hv plant ] t>cation and by the Lime period lor which da La is available. DATA SUMMARY : PER SON'N Eh MONITORING DATA Location: Lake Charles Period: 4/75-4/76 Two hundred thirty one (211) VDC personnel samples are on file, of these 60 or 26% were analyzed in on ess of 1 ppm. .Although each of these were not identified as TWA, short-Lerm or ceil inn samples, it Is estLina Led that approximately one-half of these l>() samples, ,ne time weighLed averages. Samples in excess of 1 ppm were recorded for 14 job categories, represent ini; at least 83 individual employees. Adequacy or coverage ol t lie angling protocol teas not done, therefore, the total number of employees potent ialty exposed to VDC is unknown at this Lime. The sampling results for Lhi.s Lime period point Lo eight potential problem areas. 1. EDC Operator 2. Loader 3. Loader Helper 4. Pipefitter 5. MC Operator 6. MC Aux. Operator 7. P/T Still Operator 8. P/T Aux. Operator PER 10D ' 6/1/76 - 12/13/76^60 personnel samples are on record, and 13 or 22% were analyzed to be in excess of 1 ppm with 7 or 12% over 2.5 ppm. None of the monitoring results were in excess of 10 ppm. Table 1 below provides a specific breakdown of the noniLoring da La for this period. SAMPLE TYPE CEILING SHORT TERM TWA TOTALS NO. SAMPLES TAKEN 0 11 49 60 NO. SAMPLES > 10 PI'M 0 0 0 0 NO. SAMPLES > 2,5 ppm 0 1 6 7(12%) NO. SAMPLES ^1.0 ppm t i 0 2 11 13(22%) I'ersoime I monitoring was conducted on 70 Job cal egur ion, with concentrations greater than 1 ppm reported tor 5 jobs. The number of personnel that this figure represents Is undetermined at this t imc. The highest value recorded is 6.3 ppm VDC, (MC. Aux Operator). This monitoring data indicated most the same job categories as mentioned above as representing the problem areas. Table 2 below provides a more specific breakdown for three job categories that have- a direct involvement with VDC. DEPARTMENT: TRI ETHANE - VDCM-MC roc OP ER TK 1 KITIANK OP ER NO. SAM1T.ES taken 1 3 TRI ETHANE AUX OPER 8 TWA DATA 0.45 3.70 2.70 0.90 6. 30 5.00 4.50 o.'. 7 n OTHER DATA - - - 1.80 0.78 0.12 0.00 084Q q Lor.11 i on : Corpus rlu i .( i I'l i i n.I: // I //ii- 1.!/ H / 7 0 Hi i l L y (10) })l*1 r2s3i '4in5k6' I " . >ini11os ivrr r i * i i > i 111 si , , 11 ii! no 111 * oo ro I ui i ml ( u h, (. or than f 8 6 |>| mi. It si u n 11 tl bo i n 11 i s I L11.1L .ill it) s, tm|' 1 o:. we re ob L < i i nml in (ho la l>o ra -- tory. TIi is data ind i ea l r; ihu (his represent ; 13 emp I o y (_ L-;; aetu.il expose res. Lot at ion: Barberton Period: 7 / I / 7 (i -- 1 2/3 I./76 A single personnel samp I o was (.ikon on a '`I'ccliii ieu I Cliom i si". A concentration of 0.J ppm was recorded. Data Summary: Area Monitoring Ha La Location: Chemical Division Period: 7/1/76-12/31/76 Two hundred sixty four (264) area samples were recorded across the Division for VDC during this Lime period. Kxcept for three measurements at Natrium and ten at Lake Charles, all area monitoring was conducted at Corpus Christi. The highest two readings were both taken at Lake Charles (Per/Tri-Tetra) and were recorded as 14.9 and 3.2 ppm, (short term monitoring). CONCLUSIONS 1. Records show that 322 VDC personnel air monitoring samplcs were taken over the two time periods 4/75 - 4/76 and 7/76 - 12/76,(Lake Charles (6/76 - 12/76)). 2. 73 or 23% of the.se 322 samples were analyzed to be in excess of lppnt. 3. Host personnei samples are taken at Lake Charles, most area at Corpus Christi. The highest area sample was recorded to be 14.9 ppm (Lake Charles). 4. Lake Charles has 8 job categories in particular that have most of the highest exposures to VDC. 5. The three job categories expected to have the highest exposures to VDC have a total of 8 TWA samples for Lhe last six months ol 1976. 6. based on Lhe available monitoring data, respirators arc not worn for exposure to VDC. SL 084887 c EDC Operator MC. Operator MC. Aux. Oper. P/T IOC Oper. P/T Still Oper. P/T Aux. Oper. VC I'roc. Oper. VC Furn Oper. EC Operator P/T Tetra Oper. OllC Operator 01IC Aux. Oper P/T Lend Oper. Lab Assoc. Lab Assist Lab Anal. Lab Sr. Anal. Loader Load Helper Pipe!Ltier Maint, Helper LAI. IIAKI, I'.!.; vm: im:! rrouira: ur.stn.r:; 4/75-4 / / 6 liiipael e11 a 1 r'1 S 1 a lid. i r. I No . Samp 1 er> 4/73-4/7fi 16 i.o 25 2J 24 16 t5 16 9 6' 10 10 1 J2 2 4 L `1 M ) 231 11 i j 11 e s L V.i 1 ue 4.6 1. 4 43.0 2.8 I 3.6 M*M . 38 1 .0 1 .2 1.5 . 60 . 32 . )1 4. 1 1 .12 . LO .11 2.8 10.0 9o . 0 L. / 90.0 No. Samples > 1.0 7 L2 17 1 9 5 1 1 1 1 I ) 1 1 60 TAIN, 1C III No. Employees Sa mp.Led 6 7 6 6 8 7 11 11 8 6 5 6 3 5 2 6 2 8 6 5 3 SL 084888 Al L ;ic Innen L I J personnel vis: mu;; itori no el lorir; 6/1 //<> i .7 i l //(. TAHI.K IV PLANT: LAKF. CHARLES Department : l!N(|_ I, Job Title Reco i ll oil /; Sntnpl c;; T. i ken EDC Operator II i ft 110L VaI iu' 0. A Samp I e I' I ITII a r.mi'ioyc'os _Snmp 1 od Total C/ Employees on Job Kl. h v t L. UI o r ill l' EC 1!CL Oper Per/TrL-Telt a P/T Lead Oper. P/T RX Oper P/T Still Oper P/T Aux. Oper Slil f t Hop,i Inunn Welder riliilir in Loader Load Helper Lab Assoc. Tee bnical 2 TMiMb-VDcn-jH: EDC Operator 1 Tri-Ethane Oper. J Tri-Ethane Anx. Op. 8 011C-EDO OHC Auxiliary Oper. OI1C Operator Tetra Operator 1 1 i 0. J`> 0.2'/ 1.00 1.5 ,h 0. I I 0.10 1.0 3.8 0.00 0, !\ j 3.70 6.30 0.00 0.00 0.00 1 17 23 36 12 18 13 5 12 SL 084889 \ t 'PAR i`; Lake Charles (i:oni imial) Vi_nv l Ch lov i-ilo -0 tU',1. Oper. ^ . -VCM-Furit. 6 h'<T .VCM-Proc. 7 .'ah '1 ala 60 0. J 1 0.J0 n. ?') 6. j r'".\Nr; CORPUS C1IIUST1 ~ ''pat-CmcnL: Research A,',Lys t 1 ^''"'in i ;; t 7 . Anal. 4 * '' !m io Lan 5 Sr 8 .07 . .io .60 . I0 .86 C i'misc Lah Tech. J?--.'>_r eh /j ,,i 11 o ra (o ry 4 1 .10 .05 'Petal 10 . On ^P: ISarbeiLon --- . l (menL; Rosear di/l,;i!)i)r.iuivy ^ * ' ' Chem is L 1 0. 10 To . ; ; ,, yj 6.3 I1 ]L 3 5 6 1 3 2 2 3 3 1 1 4 ? 7 SL 084890