Document QXk5XpQmOBEx62mbeYdJopJM7

conoco Interoffice Communication To A. H. Sather From Date J. V. Uptain // April 27, 1981 Subject HIGH USAGE CHEMICAL EXPOSURE MONITORING FIRST QUARTER 1981 Air monitoring of high usage chemical exposures during the first quarter consisted of plasticizer-in-air, area sampling in the plasticizer building and in the compound department, T- h- e resu lts appear *in Taab4les IA and1 II (attached). The results are well below permissable exposure limits (5* 0 mg/rrr for OOP), especially within the plasticizer building. Even so, two locations on Compound Line III seem to deserve exposure reduction work: 1. Feeder Deck The FCM hopper ventilation duct tends to plug, allowing evolution of plasticizer from the top of the hopper. Such was the case during sampling. 2. Operator Station at Mill Plasticizer evaporating from the strips of compound on the take off conveyors is exhausted by the mill exhaust hood, but flows by (and sometimes into) the operator's breathing zone. Some compounds (such as "Clear Blue 50") are worse than others, causing occasional discomfort to operators. A Uerald Uptain cjt Attachments c: CLM, CRM, Department Heads VAB.0001040761 , lujllf ii, in' - *1" TABLE 1 PLASTICIZER-IN-AIR SAMPLING RESULTS, COMPOUND DEPARTMENT 1/30/81 - 2/2/81 SAMPLING EQUIPMENT: Bendlx BDX Pump, operated at 1.0 liter/minute; Gelman Cassette Filter SAMPLED BY: Jerald Uptain ANALYTICAL METHOD: NIOSH S40 Sample Location Sampling Time (Minutes) Plasticizer Concentration (Mg/M*) 16851 CL BL 50 (OOP) 1. Line III Control Room Desk 2. Top of Line 111 East Blender 3. Line 111 Feeder Deck - East of FCM 4. Line III Feeder Deck - West of FCM 5. Three Feet South of FCM, 1st Floor 6. Three Feet Above FCM/Mill Conveyor 7. Just Southwest of Line III Mill Takeoff Conveyor 8. Line III Control Panel, 1st Floor 24 24 31 30 38 34 38 36 <0.4 <0.4 0.7 0.7 0.3 0.3 2.9 <0.3 35031 NATURAL (PIDP) 1. Line ill Feeder Deck - East of FCM 2. Line 111 Feeder Deck - West of FCM 3. Three Feet South of FCM, 1st Floor 4. Three Feet Above FCM/Mill Conveyor 5. Just Southwest of Line III Mill Takeoff Conveyor 6. Line III Control Panel, 1st Floor 44 45 31 36 47 <0.2 <0.2 <0.2 <0.3 1.7 <0.2 ........................ i'ij ti in hM-n i hhitim jjjj mu.am#.;*-ft rrtigct: H jin>wH^nWiafrlW!lPWmI -jMlWi'W L"hmy-trw>* VAB.0001040762 h>ii-h = TABLE I I PLASTICIZER-IN-AIR SAMPLING RESULTS, PLASTICIZER BUILDING 1/26/81 - 1/28/81 * A SAMPLING EQUIPMENT: Bendix DBX 44 Pump; operated at 1.0 liter/minute; Gel man 4336 Cassette Filter SAMPLED BY: Jerald ANALYT1 CAL METHOD: NIOSH S40 PRODUCTS: DIDP (R1 6 R4 Reactors); DOP (R2 Reactor); 610P (R3 Reactor) NOTE: A11 results 1imits. Sample Location Sampling Time (Minutes) Detect ion Limit (Mg/M3) First Floor 1 . Top of North Catchtank 2. Top of North Catchtank 3. Top of North Catchtank (Draining Rl) 4. Top of North Catchtank (Draining R2) 5. Top of North Catchtank 6. Top of South Catchtank (Draining R4) 7. Top of South Catchtank 8. Top of South Catchtank 9. Top of South Catchtank 10. Top of North Filter Press (Draining R4) 11 . Top of North Filter Press 12. Top of North Filter Press 13. Top of North Filter Press 14. Top of South Filter Press 15. Top of South Filter Press 16. Dr ink in g Fountain 17. Drinking Fountain 18. Office Desk 19. Office Desk Second Floor 25 28 5 6 27 6 29 30 25 22 29 26 28 25 28 32 29 32 30 0.4 0.4 2.0 1 .7 0.4 1.7 0.3 0.3 0.4 0.5 0.3 0.4 0.4 0.4 0.4 0.3 0.3 0.3 0.3 1 . Rl Control Panel 2. R2 Control Panel 3. R2 Control Panel 4. R3 Control Panel 5. R4 Control Panel 6. R4 Control Panel 7. Operator Desk 8. Operator Desk 9. Safety Shower, Warehouse Area 10. Safety Shower, Warehouse Area 30 0.3 30 0.3 30 0.3 28 0.4 30 0.3 30 0.3 26 0.4 24 0.4 25 0.4 32 0.3 VAB.0001040763 '! r M 'UTlfP.C'U I -'i conIWocViow Interoffice Communication To A. H. Sather From J. V. Uptain Date November 5, 1981 Subject HIGH USAGE CHEMICAL EXPOSURE MONITORING - THIRD QUARTER, 1981 Air monitoring of high usage chemical exposures during the third quarter concentrated on "CTA" (2-Ethylhexaldehyde). The results appear in Table I (attached). No "TLV" has been established for CTA. However, following an extensive literature search and discussions with the manufacturer. Bill Broddle, Corporate Toxicologist, concluded that any TLV established would probably be not less than 500 ppm (2,862 milligrams per cubic meter of air). Our sampling results do not exceed 0.5% of such a limit! Two mercury-in-air samples were taken in the I & E shop. Both results were iJ A tap c: JF, CRM, Department Heads Attachment . C.h. PTlf+'V't r, s-U . .su ...................... ........................... lU^-rA-l -r,it JI-HPU ^t V v.-'rrw-iii* :p-nnsi-ii * VAB.0001040764 f-ini-J S!> *.f**1 TABLE I CTA-IN-AIR SAMPLING RESULTS Sampling Equipment: Sampled By: Analytical Method: A - Bendix BDX44 Pump, NIOSH Carbon Tube B- MDA 818 "Accuhaler" Pump, NIOSH Carbon Tube Jerald Uptain Carbon disulfide extraction from carbon tube, followed by gas chromatography analysis. Sample Type/Source Samp1ing Equipment Type Dosimetry Samples 1. Reactor Operator #1 B 2. " " #2 B 3. M #3 B 4. " " #3 B 5. " " #4 B Area Samples 1. Safety Railing Top and NW of 646 Blend Tank B 2. Safety Railing Top and SW of 648 Blend Tank A 3. Same as 2 above A 4. Same as 2 above A 5. Just above CTA Charge A Station, 743 Reactor 6. Same as 5 above A 7. Same as 5 above A 8. Same as 5 above A Sample V>o lume (Liters) 6.1 4.7 4.5 4.6 4.6 11.7 10.2 10.3 9.4 10.6 6.5 6.2 11.5 Sampling Time (Minutes) CTA Concentration (Milligrams/M^ ) 156 1.5 180 <2.2 180 <2.2 180 <2.2 180 <2.2 321 14.5 180 <1.0 180 <1.0 180 <1.1 180 9.4 180 <1.5 180 <1.6 180 <0.9 A 1# 1!:: . i-t-jiv , -v .1,14. l,^,l h.i. -hi . ifi 1 1 j-h y wwm**t* ryaw-Mar*wi!T mu=* aif* I ='( i- m.frt*-rri LLRi!lnj91 VAB.0001040765 l-dTPiX Lr1+.mH+ii If : > -m W. A Interoffice Communication To A. H. Sather From J. V. Uptain Date August 19, 1981 subject : HIGH USAGE CHEMICAL EXPOSURE MONITORING SECOND QUARTER, 1981 High usage chemical exposures monitored during the second quarter were those involving plasticizer., tin, phthalic anhydride, chlorine, and mercury. The results of plasticizer sampling appear in Table I (attached). Although neither of the two plasticizers (DIDP and 610P) sampled have established exposure limits, the results are all well below the permissable exposure limit for DOP (5.0 mg/m3). Tin-in-air sampling results are shown in Table 11(attached). All results were below detection limits and the permissable exposure limit for tin of 0.1 mg/m*5. Phthalic anhydride exposures were sampled using a Bendix BDX 44 pump and fiber glass sampling filters. The results of two area samples taken showed exposures at the R2 R4 control panels to be less than 0.1 mg/m3 (permissable exposure limit = 12.0 mg/m'5). A dosimetry sample taken on a yard operator during a phthalic railcar hookup/unloading task resulted in 0.7 mg/m3. This result is significant, since the task was beset with freezeup problems throughout, requiring the operator to break the railcar/line connections several times. In short, the result is reflective of a "worst case" situation under "routine" operation. Chlorine-in-air samples were taken, using a Draeger Model 31 hand pump and Draeger CH 24301 detector tubes. Three samples taken at the compound cooling tower chlorine charge station and some 10 samples taken within the chlorine storage shed all showed non-detectable results. Visual inspection of the systems involved showed no evidence of leakage and all equipment was assessed as quite leak-proof. Mercury-in-air sampling was done in both the old and the new I E shops, using Draeger CH 23101 detector tubes. Results in the old shop [no longer in service] were below detection limits (0.05 mg/m3). The new I E shop was sampled during a spill of a small quantity of mercury on the shop floor. Four results taken in the breathing zone and in the westerly half of the shop showed consistent resul of 0.17 mg/m3 (permissable exposure limit =0.1 mg/m3). The spill was eliminated "ollowed by sweeping. rjf c: CLM, CRM, Department Heads VAB.0001040766 * TABLE I PLASTICIZER-IN-AIR SAMPLING RESULTS, COMPOUND DEPARTMENT 4/20/81 - 4/21/80 SAMPLING EQUIPMENT: SAMPLED BY: Bendix BDX 44 Pump, Operated at 1.0 Liters/Minute; Gelman Cassette Filter. Jerald Uptain ANALYTICAL METHOD: NIOSH S 40 Sample Location 58931 BLK (DIDP) 1. Line I Operator Desk. 2. 2' above Line I Dicer Belt Between Mill Roll and Take-Off Roll 3. Line I Cutting Table, West of Mill. 4. 2' NE of Line I Banbury Charge Door Just above Safety Rail. Sampling Time (Minutes) Plasticizer Concentration (Mg/M3) 30 <0.3 30 <0.3 30 <0.3 30 <0.3 18161 BLK (610P) 1. Top of Line I "A" Blender 2. Line I Blender Pit, 31 E of Banbury, @ Head Level 3. S of Line I Skip Hoist, @ Top Safety Rail 4. Line I control Panel, NW of Mill 5. 2' Above Line I Dicer Belt Between Mill Roll and Tak-Off Roll 6. Line I Mill Oper. Station, @ Mill "Face", Head Level 30 30 30 30 30 30 <0.3 <0.3 <0.3 <0.3 3.3 <0.3 VAB.0001040767 TABLE II TIN-IN-AIR SAMPLING RESULTS, DRY BLEND SAMPLING EQUIPMENT: Bendix BDX 44 Pump, Operated @ 1.5 Liters/Minute;; Gelman Cassette Filter. SAMPLED BY: Jerald Uptain, Ginny Belk ANALYTICAL METHOD: Atomic Absorption Analysis of Plasma-Ashed Sample Filters. Sample Type/Source Area Samples 1. On Platform just N. of diverter valve above dry blend Welexes. 2. Dry blend control room desk. 3. On mezzanine between ls^ 2n<^ floors of Line III, between just N. of dry blend Welexes. d 4. On top of dry blend "A" blender, SE corner. Dosimetry Samples 1. Dry Blend Compounder 2. Dry Blend Compounder 3. Dry Blend Compounder 4. Dry Blend Utility 5. Dry Blend Utility 6. Dry Blend Utility 7. Dry Blend Utility Sampling Tin (As Tin) Time Concentration (Minutes) (Micrograms/M^) 120 <57 120 <56 135 <50 130 <57 729 <10 720 < 9 525 <13 723 <10 505 <13 508 <14 484 <18 MPMMi VAB.0001040768 mmmmm Interoffice Communication From Date Subject A. H. Sather J. V. Uptain ^ March 31, 1978 CHEMICAL EXPOSURE MONITORING SUMMARY FIRST QUARTER This is the first issue of the Aberdeen Chemical Exposure Monitoring Summary, which is to be issued quarterly. Monitoring results are tabulated in Tables I, II and III. The current thrust of the Aberdeen monitoring effort is to adequately define exposures related to the 50, "Class A, Type I" materials used in the plant. These chemicals are those known to cause serious bodily damage and for which exposure standards exist. COMPOUND AREA HIGH VOLUME AIR SAMPLING A. Color Weigh Room Based on the results of "high-volume" air sampling in the Compound areas last year, it was concluded that exposures in this room were possibly excessive. To be more definitive, some 13 samples were taken between 1/31/78 and 2/27/78, using a high volume sampler and cellulose filter paper. Samples were taken by placing the sampler as close to the workman as possible during his routine color weighing tasks. The samples were then forwarded to Ponca City for emission spectrophotometry. At writing, six (6) samples have been analyzed. The pertinent results are shown in Table I (attached). As can be seen in Table I, the results indicate excessive airborne con centrations of Antimony, Barium, Cadmium, Lead, and Total Particulates. VAB.0001040769 I 4f 1 A. H. Sather March 31, 1978 Chemical Exposure Monitoring Summary First Quarter Page 2 I. COMPOUND AREA HIGH VOLUME AIR SAMPLING (Cont.) B. Other Compound Areas At writing, 19 (33% of anticipated) other high volume air samples have been taken at selected locations throughout the compound pro duction areas. Although the samples have not yet been analyzed for heavy metals content, the total particulate concentrations are shown in Table II (attached). These preliminary results indicate that particulate limits are approached or exceeded on the dry blend mezanine just above the 2nd floor. Emission spectrophotometry of the samples, which will follow the color weigh room sample analysis, will disclose any excursions above tin limits. II. DETECTOR TUBE-TYPE SAMPLING Some nine (9) of the Aberdeen "Class A, Type I" materials are being measured using Drager-type chemical detector tubes. The results of monitoring (which is complete except for two (2) additional methanol samples) are shown in Table III (attached). The results indicate no significant exposure problems with these chemicals, except for methanol. The "Brittle Point" test procedure used in the lab is obviously in need of modification to preclude further overexposures to this toxic material. jf Attachments c: G. Draper Department Heads D. Kuhn - Houston J. Hall - Houston 0. Steffey - Ponca City E. 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H o e G p+GJ CD s r--l oc G p<GP CD 2 H o G. G CD 2 # NO oo NO tO ^t CM to H to rjCM CTk f-H to LO to t1 1 11 1 1 t 1 LO CTi o CM VO vO vO i 11 1 1l 00 00 00 00 r~- CO r-. 00 r- 00 00 00 r- CO 00 00 00 r- 00 r- ?VAB.0001040775 t I conoco Interoffice Communication To From A. H. Sather J. V. Uptain ' Date june 27, 1978 Subject CHEMICAL EXPOSURE MONITORING SUMMARY SECOND QUARTER, 1978 A I. COLOR WEIGH ROOM The results of high-volume air sampling in the color weigh room are shown in Table I (Attached). Major points revealed were: A. Excessive airborne concentrations of Antimony, Barium, Cadmium, and Lead were found. B. Five (5) of the thirteen (13) samples were above the OSHA Standard for total particulates. Four (4) others were greater than 50% of the St andard. C. All but two (2) of the thirteen samples were above the OSHA "Equivalent Exposure" Standard (See Table I for a definition of this term). Following sampling, the color weigh hood was connected to the compound ventilation system to improve exhaust rates. At present, more samples are being taken to assess the effect of the hood change. No sample analyses are available at writing, but grdss particulate concentrations are 1,340; 9,270; 14,500; and 16,100 micrograms per cubic meter of air. II. DRY BLEND HIGH-VOLUME AIR SAMPLING Nine (9) samples from the Dry Blend area have been analyzed (See Table II). Six (6) other samples have been taken, but not yet analyzed. The results are very encouraging. No materials were found to exceed limits. Tin, the major concern, was found to be at very low levels. The OSHA "Equi valent Exposures" were nil except for one (1) sample (#78-20), which also indicated an excursion above the total particulate limit. Pending further results, it is concluded that no significant exposures are evident in the Dry Blend area. .\3 ' . Irfj-lr - mm VAB.0001040776 A. H. Sather June 27, 1978 Chemical Exposure Monitoring Summary Second Quarter, 1978 Page 2 A III. COMPOUND AREA HIGH-VOLUME AIR SAMPLING A total of 21 samples have been taken in the Compound area. Analyses is now underway and the results will be shown in the 3rd quarter report. Approximately 15 more samples are needed to adequately define the use of Barium/Cadmium material and two (2) lead compounds (a phosphite and a stearate). Sampling is limited by the availability of production runs involving these materials. w IV. SULFURIC ACID A method for sampling airborne concentrations of sulfuric acid was developed by the Lab. The procedure was to collect 0.1 - 0.4 M^ of air, using a Bendix air pump and a "midget" liquid impinger containing 20 ml of distilled water. The solution was then treated with barium chloride and a turbidity comparison made against standard solutions. The sensitivity of the analysis was +0.02 milligrams of sulfuric acid. Six (6) samples were taken at the treatment lagoon area during sulfuric acid addition. The results were well below the 1.0 milligram per cubic meter of air standard, amounting to 0.067, 0.053, 0.17, 0.074, 0.077, and 0.08 milligrams per cubic meter of air. V. PHTHALIC ANHYDRIDE A test method for phthalic anhydride was developed by the Lab. Sampling will commence within early July. The technique involves dosimetry and will involve Yard Operators and Plasticizer Operators. VI. SILICON DIOXIDE A test method for silicon dioxide was developed by the Lab and a sampling vortex for collecting respirable fractions during dosimetry was obtained. Sampling will begin during early July and will involve Plasticizer Operators. JA jf Attachments c: GGD, DWF, Department Heads, DSC, B. Lloyd DAK, JJH, ODS VAB.0001040777 oS < uj X O I uj X O<Q 33 H O O OS aa CO r^ 04 CM t 00 to w QS o X o *--J tj uj oX X< H> E 3 H nEj cd U I 00 P Cd 0Q "3 T5 cd CtJ O cd h a> to *H to p xI <0 cd cd cd 00 cd X* 4h r* H xp *H P 3 Q Cu H CO 04 < !> 1 e *X3 cd U g 3 H P Cd OQ OS < o OS tu H w CJ H OQ CJ oS uj a. co 3 OS <J O DS u o L^--! 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U OS X os <HH CM x s to XI O CO < >i 00 E- X O X Q X X CQ OS Q Q X HH x OQ X WET CD o S Xto o o CD ix-H *fHi C<D T) aj O N S CM tM X So cCoD w!r CD > JoO < o o o LO i--4 CM H X 1 00 tM tM CM CD S CD > O X < i--4 o X O CM c O 1 i-H 00 X N *"3 tM <D CM <d > o o CM 1 <X o <D O 00 *H -XH nd tM C tM CM CD S uo o cj CXu] 3 CO r*H to CM o * * oOo to to \Do r--4 ft ft O o to o LO CM os < U. o a: UJ H UJ CTi CM Oo CM i-H 00 o i-H O ft ft oo * * oft ft o CM o o LO r-v i-H ** o rH rH *V V V !-H a> * o* o o * i-H r^ \o V CM co x X c os H 3H $H CtJ X rH E O X o <D Oh UOOh aJ CD X CD a> 00 *rcHH o ft o ft a> oo c u c o H X CM O ft Ph X) o H a < 0) * trHo oX CMft o Ph XO a> Fh a> o > Ph o cc to U J X o <D ?H 3 to oIX X X 4-J O ^ <D 3 <D o to *VH) <D + CM II O 2: XE ** ** K VAB. 0(301040780 oHX <>X3 * u CJ t". c * rH o o *d" o oo o o o o to Jh o o o o o LO in C_> o 04 LO 1--1 o V to LO < where: Em is th e e q u iv a le n t exposure o f the m ix tu re , C is the c o n c e n tra tio n o f a p a r tic u la r contam inant, L is the exposure lim it fo r th a t contam inant. l w Q H CL, m4Voc-d>l CL, Vl <D <CD e<D 4h +> 0/ CT) l/l rH rt CU OQ u CD CD CO Vi L0 4-> O 1 3 tw 00 4-* 0X cd i--1 V) (X 3 CO C+<300-OD> rPofoHHL tLooOot *2033MM03H C3N uO* +J rH o H 3 O 0 0 2 0 3 3 > 33 <X> X] 0J-i CD 3 3co O U wX o 3 ?h CN 04 t3otHoo o U3lM 03 3X 0 M *rH* '^H 3^ zo PEJ LcUr * * 4c * VAB.o6dl040781 a conoco Interoffice Communication To A. H. Sather From Date j. V. Uptain October 3, 1978 Subject CHEMICAL EXPOSURE MONITORING SUMMARY - THIRD QUARTER, 1978 I. COLOR WEIGH ROOM High-volume sampling was repeated following the connection of the weigh hood to the compound ventilation system. The results (see Table I) clearly indicate that exposures, particularly those related to the dustier material such as the barium/cadmium complexes, are still'excessive, in spite of the increased airflow through the hood. A proposal for modifying the color weigh room operation is being reviewed at writing. II. COMPOUND LINE I AIR SAMPLING' HI. Preliminary results of high-volume air sampling on Compound Line I appear in Table II. Although the final analysis for heavy metal content is not yet completed, the total particulate concentrations so far indicate no serious problems. r SILICON DIOXIDE Four, 8-hour TWA dosimetry-type Silicon Dioxide samples, involving the Plasticizer Operators, were taken, using a "respirable fraction" vortex sampler (see Table IV). No significant exposures were found. IV. PHTHALIC ANHYDRIDE Ten dosimetry-type Phthalic Anhydride samples were taken, involving Yard Operators and Plasticizer Operators (see Table III). Work tasks studied were the routine production of plasticizer and the connection/disconnection of Phthalic Anhydride railcars. Exposures were well under established limits. V. COMPOUND AREA HIGH-VOLUME SAMPLING The results of 24 high-volume air samples taken on Compound Line III and in Dry Blend are shown in Table V. Except for 4 samples, the results are very encouraging. Two of the four results (#78-78 and #78-80) indicate total particulate and tin problems in the Dry Blend area, although the limited amount of information does not justify firm conclusions. Similarly, samples #78-65 #78-89 indicate high lead concentrations in two Line III areas. VAB.0001040782 A. H. Sather October 3, 1978 Chemical Exposure Monitoring Summary Third Quarter, 1978 Page 2 V. COMPOUND AREA HIGH-VOLUME SAMPLING (Cont.) All in all, the results are better than anticipated, the difference probably due in large part to the compound ventilation system. A tp Attachments c: Plant Manager, Department Heads, DSC, EDS, DAK, JJH, ODS VAB.0001040783 Samp1e No. 78-99 t -105 -110 -114 -118 -119 -100 -101 -104 -113 a -120 -109 -111 -112 TABLE I COLOR WEIGH ROOM HIGH-VOLUME AIR SAMPLING 6/28/78 - 7/26/78 Material Sampled Barium/Cadmium If If If It It 11 m 11 if It Ant imony Trioxide If Tf II It It IT If ft , t tl If i Dibasic Lead Phthalate Dibasic Lead Phthalate Antimony Trioxide TLV Mg/M^ Ba: 0,5; Cd: 0.2 iIt * M * It ) tf ft t r ff it ff it 0.5 (Sb) If 4 IT ri tt 11 it If it tr it 0.2 CPb) Pb: 0.2; Sb: O.S * Total Particulate Concentration, Mg/M^ 14.1 23.5 18.9 15.0 18.4 14.0 4.9 10.1 9.9 3.1 6.3 12.4 1.0 * 4.1 TLV for total particulates = 15 mg/m3 VAB.0001040784 TABLE II COMPOUND LINE I HIGH-VOLUME AIR SAMPLING 6/30/78 - 8/8/78 Material Being Sampled: Barium/Cadmium Complexes TLV : 0.5 Mg/M^ (Barium) ; 0.2 mg/M3 (Cadmium) Sample No. 78-106 -116 -107 -115 -125 -108 -117 -128 -126 Location Between Blenders F SE Comer of "B" Blender Between Blenders Banbury it it it ft It U Just SW of Mill ft T1 TT It It tt ft ft Compounder's Desk * Total Particulate Concentration, Mg/M 2.0 3.5 2.0 0.9 'L 0,6 2.0 1.6 1.1 0.4 TLV for total particulates = 15 Mg/M * VAB.0001040785 * TABLE III PHTHALIC ANHYDRIDE DOSIMETRY 7/10/78 - 8/23/78 3 TLV for Phthalic Anhydride = 12 Mg/M (8 hour TWA) Sample No. 78-113 -114 a -121 -127 -129 -123 -124 -130 -132 -131 Job Classification Task Sampling Time Plasticizer Operator Plasticizer Production It M tf It It It It It It ft n It 5.3 hours 4.2 hours 6.5 hours 7.8 hours 6.5 hours Yard Operator ft ft tr m rr it MM Connecting R.C. H It II It II fl 10 min. 18 min. 13 min. 15 min. Disconnecting R.C. 10 min. * Concentration, Mg/M^ <3.8 <4.0 <0.03 <0.02 <0.03 <1.0 <0.6 1.0 0.7 1.0 VAB.0001040786 TABLE IV SILICON DIOXIDE DOSIMETRY 7/13/78 - 8/25/78 mmY t i 1 -- TLV: 5 Mg/M^ (Total), 2 Mg/NT* (Respirable) Employees Sampled: Plasticizer Operators Sample No. 115 a SD-2 122 133 Concentration 8-hour TWA Respirable Fraction, Mg/fP 0.25 0.12 0.77 0.17 A VAB.0001040787 1 ln vO 1 00 vf1 i oo vO l 00 Ok CO o' < 00 x LO CM LO o X 00 < r CaOc H DC I 00 tO to I 00 X <m to sx Q O Cu 00 PP GG tH X cfl PP X P3 X CO CU oCJ rt G 0 0X X CM a 1 o H 00 H to CO G GX X *H *r4 P o E-* a) T3 r^ H i--4 C +J 1 H CL, OO +-> cc >N o *--* CD <S o x o CXu <--24 5<1^ < CO X C-? eXx CO 5 Uj a: x CO CJ 00 V P tp <1> o T3 0 p CD 0X c P to o u CD go x *rl CD CO O to CD eP *H o XX CD CN > OS G uo x PH CO 44 0 o nD 0 Pn 0 0 X E to o o 0 1^4 GO IX) H 0 C/3 X Q CN O P CD o fn o O OS U UJ CJ CO CL, <D C3 *H 0 XG H XX 44 p O0 o X H --Q to to u o +-> c/) G CD s bO UJ EV C/3 44 cti O rC e tM CJ fH OP o 0 Xi M-l & G U +J P 4-> aJ -- O rt *--h to CO Oh O f<r* <oX X u Cu CO m f*^ to 1S--4 Hf--i p u ooo oo o o o U LU o LO o LO o CM lO G o H o o CM o LO o o o o< H P u LO rH to <c o o i Ol CM CM CM CM CM o CM to* tom CM* to to * to * to* CM* LO O i-H o OO o o o r-H Cr> V V VV \o P G G G G P G O u p G 3 O H o CTi OO 00 00 LO CO 00 LO to to to cn to to vD CM aV a. 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< oIX X UJ H cn LO i-H o CM LO CM U o O i-H 4** i* 00 O o o O LO CJ VO pc: tu ex vO o2: CM f-H i-H to H LO to CM o o o to o CM o Aw V a 4 44 * o o o to o o VO UJ u o CJ oCM to o i-H o vO to i-H i-H CM CM i-H vO CM rH 4 4 * * * 4 00 CM 4 rH O O o vO ooo to G O H X> 3 P X> G CD O a> oo G O G cd O P CD G O X x> to X> *H 3 P CJ X pH 3 X* CD G O P3 0 X5 *H V) X* 3 3G x> H XE rH 3 e x> G a> O OU CD P +j x> Uh 3 CD o fIml 5 x> a) to P CD 3 t3o 4o-i 3 > o PL x> X H <D E H /\ X G Eh O CD CD P 33 > to V HO cr* X 1"l CD CD < CD <D X x> x> to to G CD H H E CD E UJ a> to X x CD U CD X* to LO r^ Tj" i-H vO to to to to OO oo LO ** oo **** o o o to P O 4h CM to CM VVV LO lo tj >(D G G CJ X P CD tn CD X po 3 t/> CD CO O UJ H & G H <d XI CJ UJ CD P X> 3 G G O H CM Csl CJ <D X t/1 XE fr4 G 3 o B 3 H u 0UJ X UJ E X> 5 3 *rH P cd co *H E ns 3 O E O x: CJ CD PH T3 PH 3 o CJ H H to < ><D tn a) G t rt CL *rH 3 *H CJ jx E CD fl 3 cr oo < UJ cG O 2: uf 3 tH O K E-* E-> * * * VAB.0001040790 to 0 c *3 CcM 00 00I i CD hJ ft O t0fOt 0> ft w a CD oo PQ pu to 0o T3 G CM XG ft G0 n3 G 0 ft 0 ft ft a 0 0 vO a G H ft 00 H to G u0 1 to G G o 00 G ft Ph CJ G r< ft ft H t-H H Q ft CX f-4 E-. 3 CO 0 w rH C/5 PQ o 0*1 CO ft a: g O u < tu wo * <^c4o X X < ft <ee Q O o- o u oo 1 OO X 00 LO CM LO I 00 I oo h" oo r- to oo i 00 cn i oo X G O 6 *3 *H G ft <D G ft < O 0* 0 *H +J T) to rt H rt xi x rO Oh O rH i-H *H ft CO ft oG H ft fGt CO to * 0o G0 *fHt OQi| V5 C/5 P H ft 'O o X'I ft 0ft O O P3Q l to H ft ft a) rt CO o pi 4-> 0 iH H <D O Q CQ < *GM X G G CM G t-3 u!r 0 E ft V) *3 G 0p <D (/> PQ 0 fn 5O X 4-> O ft 0 *--t i--i CQ U, 0 p p cd t3 p 0) S 0> ao 0 ,o rH < PQ ft fXftt "t3o* ft oo tu Q ft ft ft o 2 CO < CO ft o ft ft HH jr CD 2 ft X ft CO u 0Q o ft o co ft CO * 0 f-H M> --t hH f--' m Pi o h- ooo <0 *r-f o o o o CJ LU o o o LO o o o o o LO to CM O pH CM LO o X 1u o< f- tO LO < CM 00 to to rH to o o o * * * ^t \D !> i-H *** rt o * CM o o o o v> O o CTi o VV LO ft G G G iH E G ft G O O - vD to 00 00 00 O i CM+ o* o o * to X to to to CM O o o o CM t~H' VV V CM ft G rTMt 3 O H ft ft G ft G ft O ft < fot ft m ft ft vD Oi 00 to CM to CM 01rft 1 * i-H * o o# rH a oO H a O 00a 00 i-H + o* ooOo ft CJ ft ft ft to 00 CM o CM ft < ft ft u o u X o oo o CM to CM a a* r-H o o o VV oo o LO (M o o *a i-H o X to CM V vO # LO to cr> LO CT> LO vO LO to o LO to MO 00 VO CM \o CM a a aa a a a CM rH o X o LO o ^h o rH rH to to VV V LO Oo rH h" aa CM O - CM LO CM to 4a oO V CM CM o V Cft CM o CM VO a*a rH o in o CM r~* vO V oo Tt O to a O CO ft 0 00 G fGt C O fHt Gft rO *H G O 0 X H fCtO 3 O 0 ft 0 0to 3 G > A ft O V < ft G0 0 0 to *H fftt! ft O ft G O ft G ft ft G 0 a G O a 0 ft ft to *r-( u #1 m ft 0G Pi G 3G +J H XE G E ft G 0O ft U ft ft ft G O ft ft 0 ft ft 3O V) ft O Ph -M X 0E H ft rH G 00 rH ft G3 > to o 3 p* a4 X 00 00 ft ft ft ft to to H H E W ft aa 0 ft 0 0> G G 0pH U ft to rO o 0 c < u ft ft ft ft e o B H ft G < E 3 *H Ph G PQ E 3 iH E TJ G U 6 d o ft x: u f0t ft ft G o0 o ft 0 t0o c G G G s G rH H ft < ft ft O ft CM CM G U ft O H to to *H 60 U fl uf * k VAB.0001040791 * conoco Interoffice Communication From Date Subject A. H. Sather J. V. Uptain December 20, 1978 CHEMICAL EXPOSURE MONITORING SUMMARY -FOURTH QUARTER, 1978 I. Spray Metalizing For some time we have utilized a crude "flame coating" process in the main tenance shop for building up metal parts, particularly shafts and similar round objects. The process consists of metering finely divided metal powders, made for the purpose, into a flame, which contacts the metal part to be built up. Some concern developed that workers in the area might, as a result, be overly exposed to heavy metals, since no controls for limiting the air borne concentration were present. On 10/4/78, eleven (11) air samples were taken, while the various powders were used. The results appear in Table I and clearly show that better controls are needed. Since generation of the fumes is confined to one place in the shop, the most efficient control appears to be an adequately designed, local ventilation/exhaust system. This subject is under discussion at writing. II. Compound Line I Air Sampling The final results of the high volume air samples taken on Compound Line I appear in Table II. Although one antimony result (sample 78-102) and one barium result (sample 78-116) are disturbingly high, the most significant problem appears to be lead - especially in view of the new OSHA Lead Stand ard. III. Color Weigh Room Final analysis results of color weigh room sampling done since connection of the weigh hood to the compound ventilation system appear in Table III. As can be seen, the concentrations of heavy metals are still too high and little, if any, improvement was realized by the hood change. . At writing, plans are being cast for re-vamping of the entire operation, including the ventilation equipment. IV. 1978 Lead-in-Air Measurements In anticipation of the questions to be raised as the effective date of the new OSHA Lead Standard approaches, all of the 1978 lead-in-air measurements made with the high volume technique were summarized (see Table IV). VAB.0001040792 A. H. Sather December 20, 1978 Chemical Exposure Monitoring Summary Fourth Quarter, 1978 Page 2 h- IV. 1978 Lead-in-Air Measurements (Cont.) These measurements were all area-type in nature and, although they are no substitute for the dosimetry specified in the new standard, will be helpful during the "initial determination" that will be required. V. Trimellitic Anhydride During bag charging of trimellitic anhydride to a plasticizer reactor, one sample was taken. The airborne concentration was found to be 13 milligrams per cubic meter, somewhat i high. More samples are needed to better define the hazard. In the meantime, operators are required to wear respiratory protection during the task, which occurs only during the occasional pro duction of TOTM. VI. Carbon Black Several samples were taken of worker breathing zone air while they were charging carbon into plasticizer reactors. All results were essentially zero, with no significant danger being apparent. VII. Hydroquinone Six air samples were taken in the PVC reactor areas to define airborne concentration of hydroquinone. All results were negative. Jerald V. Uptain Attachments c: Plant Manager, Department Heads DSC, EDS, DAK, JJH, ODS jf 1 VAB.0001040793 o rJ ccod tH/) e Cp0u CD P WCl, t3/i OP pH X U4 -eH 6^ o% p H tO o to * up o o LO LO p oorH oo o o o** LO o o LO oo CM o roH Po CJ rH (/> < o o o* LO * 9 < ws rJ o CD < H03 i Cu CO i00I T<3D O H Jh CO 4n a> 0 0 fH ft Ul ftto rH 1 00 LO p rH (/> o x: p _cJd o p ahs Ph 0 oo o 0to0 00I LO r^ 00 P ^ r--I op0 PCd *OH ><D 0P Prt J Ph P 0 o co a cd Oh nO C7D) p * o 0 & E- oH Pcd O zPo 0 rH 0 nO S bo cQdh CO Cou i--i cd p P 3Ph 0 CO CM LvOO L000 o CM O CM o CM vO rH C^Mij1 vO LO o 0o0 rH rH to rH p < cp o P0 00 P to 0 s *oH V xi 3 CJ Fh o CO LO ced O pbo O P o fH /V tO CM 00 to N to VO LO vO to nt o H CM tO LO vO a> P cd O vO P PK P o a P o u a> LO CM g vO Cl LO rOo <Ti <pH LO o LO CM LO +j 0 0 w H3 nEo P CD P 0 Ph O OPh CD PH N 3H Eo p u 0o0 o CM \Q to o to t^ to 00 vO o o rH \>* o 00 rH o to pH to CM A He cr> o cr~r>- rH r- to rH to to i-H t-** * o o to CM to o CM O V CM p c cpd H * cd P P P oe a H fH cd cd rH Pp 3 o oCJ Pp P cd cd P Ph p o0%0 cr> otoo 00 to CM 00 to 00 O (N O VV a> oo to CtoT> vO lo 00 to a% vD vO oo L0 00 t^ O oo LO CM \ <D cd p bO P 4h ,o Cd o P OP po prH H H H P P cd cd P a) P pu rO P CD 3 U a p +3-> CD S XrH a) LO\D LO ai * vD 00 O CM o <N V K LO CD 3 fCPD P to c>d tvoj` Ph X CM < cu p oooo LO O to to o a CM 0p p p CD E 0 c>d H 03 tf> W CM vD a> OrH CM CM CM to o oo o cn <rHM rH O LO o a> LO * CM A CPD -H II -+C-> S-- W U O V+H 0 n0>o P0 P0 tn xo* P CD * t3o 0 CwO 5 o wOX h p rH CM CM P <D op CD <D 1--1 0 pX uH z HoppH *H P GcQd 0 P cd bO no cPd S rc0Jd PH H u HH H CL <--h o H P<D P 3 e>tt P XH rH 3ow ** HCO t/> H CJ M CD II w He Ht 4 VAB.0001040794 0) i-3 HOW XI U Cl, (tf 3 icEHnn XtoOohE+iH-> fa-)i pq i--hJ 6? c L = Exposure lim it fo r th a t contaminant. EM = Cl_ + C2_ + . . .Cn, where: EM = E q u iva le n t Exposure o f the M ix tu re , C = C oncentration o f a p a r tic u la r contam inant, No emission lin e observed fo r th is th is element. A ll < o r R v a lu e s were o u tsid e c a lib a r tio n range. c- <H Cl, W mo (D OcSF3 r-fooHn T"CH3D -<SfJD Pl, ft T) -H O SH 2Ctj Xcol LO nd o cho +o-> o rLOi +0HJ) oi/I r+CrC-D>t h3 OcP<fcDtj ofPt.M-o1 os Cum TO3 to 2o H<CXDX oC +r-H> ao <d rH Ph XSCoDI e cl COH0 rH CO i-H Oj PEU a CO H *<H O<4-1 +<<-DU> <J pH pO C3J P CQDh to i-H LO LO V) rH CM i-H s cj o o O O M b0 O o H s a 00 to 00 o CM vO I-H 4-> i-H oO CM rH CS CM fH o c o CJ <d LO rH o M* G <3- LO to vO fH 4 o o i-H rH vD rO to i-H P CM H /V < LO OO OO to cn vO rH o (7> i-H o Tfr o o o o to oo vO o * *- vo 00 OO CM H* OO 00 i-H c- CM to * \o 00 rH o LO o Vto rH to l\ CM o to o cn vO +\ CM LO LO c- o vO vD h- 00 cn to vO VO O rH i-H CM CM (V i-H o O O LO O* rj* vO CM CM LO LO LO rH rH LO o i-H LO CM vO cn vO cn CO vD vO vO vD CM OO LO o H CM o lO rH VV vO O OO o* CM tpnq <H ' wCPiO3PXnDX, +J 3 cd HweCD TuECH3TJ t_ou<PP?Dhh MrOcH EofH u i-CHD *2iOH Co huH E3H CucQj <<CCcd/Dt)i SacJ *CC3tDJ EciH- <OHE--* w **K (M ixture) LI L2 Ln VAB.0001040795 to p H s H H P U 3 H o CD o o o fn O o o o o 3 o o o LO U o o o o o X rH LO LO CM o CM LO r-H o o H 3 > * co < 1-H LO W rH P * d> vO P <D 3 3O I PO rO-P4 00 CJ co CrO (/) fH a> *t3 3 LO CD OQ X IP 00 3 3 CD CD 3 3 P op a) OP Ok!T rH o O rH to LO CM to o vO ^t o to LO V CM V r^. o CM o LO LO CM * * * o CM O rH X 00 (D hJ O a. 1 G --H P i-H O *H vO vO LO CM to rH c- CM o 00 o sg pH o vO o O H u CO o fv 4h O to P fH <D CD P u n3 CD 3 OO CD O C-- 00 >% 00 OtS o fH , n vO vO o o QQ< rH O 00 1 G3 3 cn vO to <D X) U m * 00 V g CO CM rH o l I c- P rH CDCO 00 <H HhHH c- +J 00 <n OP to* CoD to 6 to al vO f0H01 CD o P po CD H Q vO fn T) 32 OQ O <D G vO cn to rH 3 CD LO rH rH rH O 1 P rH 3 <1 oo O 00 O 00 O O CD CD CM Op vcd S= CP 3 co r fn P CD e <d o 3 o CD V) CM G f-t O a) a> rH <L> T3 1 3: G 00 -M <U c- 0) r-4 0Q CO to to * o o to to V oc H P 3 o o 4 <D 06 aG E rH 3 CO eu 3 CO Pc E 3 o E3 Q s 3 H E E H E o CD P P T3 P rH s 3 0Q 3 CD CD i-H c-. rH o to to to to o 00 LO * o LO o o V o V V to CM cn CM CM rH o * * * * cn O CM o to oo o V LO A rH 4c o c- 00 00 o 00 o 00 CM 00 o CM * o CM LO o CM o CM * vO o LO VO o o to o o CM * * * 4o o d- o O to V V CM P 3 3 3 H gcd 4-> +-> G G Rj oc O -H E fH Rt R* 4- o3 cOo H PP P3 3 ap CD 00 3 P o P P3 <D P X V) CD 3 CD 3 > A P 4H O G\ oo vO to o CM rH CM oo rH o rH o i-h CM o #1 o rH CM p CD oP V 3 toaxo CD CD c3r vO rH o cn CM VO o * * o> to LO 1--1 r--t V Vo to rH rH rH C/> 11 Ps P O 4h * * CD P CD CD > P CD V) ff o fH 3 V) CO O IS c O CJ CD * 3 a H 52 x CM cm 3 CD P CD O CD 3 P H to<D 3 CO HP CD Q rt X CD | V) < ^ *iH E CD CU -H S CD 11 fH 3 3w <L) 3 cr O CL, 00 < pH 3 3 3 H O CD 3 H O * * 4e CJ H f-1 * 4c VAB .0001040796 P *iH J H H P 3 H o H i--pH o o LO o o to o o CM Tj- p LO U o o o o o CM o o to o o i-H o o o o H >cd to < rH V LO o * i-H 4 Equivlaent Exposure o f the M ixture, C = Concentration o f a p a rtic u la r contaminant, L = Exposure lim it fo r th a t contaminant. X w anC3D o P hH C3oJ < w hH o W PQ < ETM1 as w j Q O O U o u 00 u oo s 3 oo i 00 PQ ** to vO z hH w PQ X 1h n0d vO CM 3^ r-H o <n 1 oo BSo* Q c_j V) P nC3D LO 0 CM rH X rH PQ fH 1p oo 3 rO r-. 0 e 0 <d s CQ p 0 0*7 PQ r-j O I--1 C nH rH P #H 1 os oo CD r-. 4-1 SO CO o3 H * o P 3 o o CD PI ft oo 3 3 H L0 rH Q i 3 CO oo to nT o oo ** oooo VV P *<H 4oh P* 4t 0 nr tO P 0 o rH * 1--< * O * 35 o O o o oy V X 3 U P CD CO Vi to o CM bo rH LO CM o> o*V* CM CM 00 o Vo rH LO rH H as 4* o3 H * u -t-J c 0* o nl" o _ 3 i-H to CM rH O LD O to rH O VV P3 s3 3 o p * pH 0 3 -rH & rH H o 0 P P nD Vi rH 3 3 3 x: UJ < PQ U 00 nt r^ VO ooooo * * *o o CO o o 1-H to LO nj- to o LO o o o * * *o o CM o o nt to CM CM LO cn Oi CM O 4 * * * a> CM CM rH CM LO C- CM 4c CM vO 00 rH LO rH rH o o O LO o o vO V w w & u o0PP)UU ni--30oJ (1U0 0p3) 233codo HH u Hos < Cu < H O t-- ao>o 3 3 P os H P LO 3 op X o *rH 3 a nao tHo P 3 O <D P rH 0 oS * o to o 3 c>d A op V to vO < 4 rH p 3 0 0 0 to *H X II P nf P w oO * 4h O nO p 0> 0 P 0 to <D U P X 31 3 oU (0 ,0 o3 S' w 0) pp 33 CD P X 3 > H c3r w CM CM 3u O H to to H 0 u II w 4c 4c 4< 4= o VAB.0001040797 H s r. H f-H CJ o0 o o o ooooo H 3 o o o lO !h o o o o o X H LO LO CM U o CM LO rH o o cj ** f-H > t/) j> < o Ok o f-H 1 oo LO o rH 1 00 X 0r"0 O_3 wi--3 CQ < o2 oci <XJ3 WI-H C o ouh-3 o i-H 1 00 r-. i-H O 1 00 X 00 a> i 00 r-. Oi i oo r-- o z CD rH Oh s 3 CO to to to CM to CM **** vO f-H LO to CM CM LO * to 00 cn vO rH to rH CM rH 00 CM rH VO to CM V rH A CTi rH vO CTi rH oo CM Vr- o !>. u <! Mh O Jh 0 o LO +-> 0 o CM LO s CO O CM V Vto CM U LO H i\rQ 3 CM X 4 u Jh 0) fX, t^ CM rH to e * m o M*` rt CO Ok CM O i-H oo rH LO o h /V a H s 0 to o H LO* LO CTi 00 O * 4-1 vO CM to O aS rH CM CTi VU +- C a> o c o u VO CM *? CM O * vO * O* i-H * to o 1--I o to X 4-> o E3 o o E 3 * rH CD E 3 rH S E H E o CD 4-> u fH rH O rt 3 x: tl4 -5 CO U u to * * cr> LO ct> CTi O to * 00 to* to o a> V Vo rH to o o f-H o rH 00 V 1--1 * vO vO vO O CM CM CM o rH CM rH rH V vO V V CM - -3c CTi o rH o LO oXoo *1 V V V to CM K *3- x r*H o LO* CM CM f i LO CM to * rH o CTi V o CM V V Os CM 00 rH vO o LO to* LO * LO O o o o o +K V V O i-H fe CTi to CM Oi o o * LO * CM o o rH o vO o o V v) rH to 00 to LO o0 vO* * o O CM o o o o r-. V CO u H u CD ft, xl Oh 3 O CD CJ rJ CD to CD 3 3 bO C3 rt H S f-H X C_) I-H E- Oh < H O E-< s vD CT> 3 *H e m LO 3 +-> H-> 3 33 O o 3 e crJ +3j rH 3 uo vO H O* 4-> 4-> fn Ci CM a 4^ * Ph 4-> CD bft 3 fn 3o aj 4-1 44 PO 4-> 3 O C o *sH H rH *H X +-> 4-> rH Ok ctf 3 U h0 to X> H-> O H 3 3 rH 0 i/> 3 uo o C Ph ox 0 U UJ II II tO +-> CJ 1-3 rH s CM O #L CD vO CD M fH 3 0 +-> 5X H to s <D 3 CD rH r3 3 -M > vO <4H to * A O r*H 0 o fH V3 to o rH Oh rH X < PJ oo * +J 3 LO +-> 3 ,-0^1 o03 E> 0 H rH 3 0 a4 m tn ii +J to rH o om X 0 > fH 0 to 0 ,n Jh O 3 to 0 o g* r3H u 3 4-> O 3 0 H to f-H to 3 rH >s 0 3 a4 o w ** JC s U3 * 0 u 0 X s 3 u J3 * * + CM CM u + rH rH u II B m H K 4 VAB.0001040798 to p fH eU PHJ H c H U <D o o o Tt oooo 3 o o o LO fH o Q o o o LO LO CM u o CM LO o o ** E- 10 jo < oV OS < QJ 0r-0. 2ZD P CM O ph a; pPQ o 00 < 33 H S CM O CM oOS vO 33 CJ w os o P o u 00 i-H 1 00 t^ CM rH r-H 1 oo o* l 00 x o z 0 rH ft E d LO VrHi < 4-1 O P 0 P CD O P d* cj O CM *5 o Vi a>* LO LO * 0 o ao CM o ft LO t0 V LO 400 o fH o LO 00 *H CM LO to s*4 * 00 *v CM co tO o V rH p d u p c 0 LO o to VO o o LO 00 do * CM rH o u LD XE Pd 3 d o 3 pH 0 3 H *rH *H o 0 4-> fH T3 fH r-H d d d pC PH pa u CJ ** o oO cr> * LO cr> * a>* o o CM o o CM Y Vy 00 ** 00 00 00 to LO to to o * * * *o o \Q o o o V Vto V +% r-H vO 00 to o \D r-H o m * * cr> O 00 o o CTi X ft V CO m s cj H 0 os to 0 <a. Vi d <0 d iP ft 00 ddd o0d o u hJ S a> oo do *H P d P P H d o 0 TJ to p d o 0 fH 0 s to 0 d d > ACM O* p o V < o oP *d CM 0 O 0 <0 H LO >o * 0 Vi d to o ft X u ^--*s +-> 0 c fH 0d rH p dX > iTM1 s d '--/ O' PH * * p fH O m T3 0 > fH 0to fO o 0 d H r-H d o to to H 0 0 2 p S e eaHj +-> 4-> C oc O ,s Cfnj -cMfl C 3o oo rH PP Pd dp ft P d fH O 4h 4h o P do *H H H P dVi 0 PP dd o to oo d ft oX cj PH II II OP 0 fH d p x H s 0 P 4-1 O 0 P tdo o ft X w p d 0 d > rH cdr ph n S ph 0Vi 0 ed u rH * * + CM CM CJ >--H + r-H rH CJ PI 11 PH ** VAB .0001040799 Sample No. 78-1 78-2 78-3 78-4 78-5 78-6 78-7 78-8 78-9 78-10 78-11 78-12 78-13 78-94 78-98 78-101 78-104 78-105 78-109 78-110 78-111 78-112 78-118 78-102 78-106 78-107 78-108 78-115 78-116 78-117 78-125 78-126 78-128 78-17 78-27 78-33 78-46 78-47 78-65 A TABLE IV RECAP OF 1978 LEAD IN AIR MEASUREMENTS -HIGH VOLUME AIR SAMPLING- Location Concentration, Micrograms per Cubic .Meter of Air Color Weigh Room < 0.5 Color Weigh Room 217.4 Color Weigh Room 390.0 Color Weigh Room p Color Weigh Room 170.4 171.4 Color Weigh Room > 327.3 Color Weigh Room 291.9 Color Weigh Room 162.6 Color Weigh Room 70.0 Color Weigh Room 575.0 Color Weigh Room 34.8 Color Weigh Room 516.9 Color Weigh Room 26.4 Color Weigh Room 10.68 Color Weigh Room 6.53 Color Weigh Room 0.38 Color Weigh Room Color Weigh Room 201.27 \ 47.19 Color Weigh Room 62.14 Color Weigh Room 1 ,038.53 Color Weigh Room 178.66 Color Weigh Room 376.54 Color Weigh Room 22.57 Compound Line I - Between Blenders 103.24 Compound Line I - SE Comer, "B" Blender 7.28 Compound Line I - Between Blenders Banbury 34.38 Compound Line I - SW Corner of Mill 22.87 Compound Line I - Between Blenders 6 BanburyX>2.49 Compound Line I - SE Corner, MB" Blender 15.77 Compound Line I - SW Comer of Mill 5.56 Compound Line I - Between Blenders Banbury 272.94 Compound Line I - Compounder's Desk 2.55 Compound Line I - SW Corner of Mill 9.04 Compound Line III - 3* W of SE Corner of Master Batch Charge Platform % Compound Line III - 3' E of E. Dicer Line 1.76 3.66 Compound Line III - SE Comer, FCM Room 45.48 Compound Line III - SE Corner, Feeder Deck 18.31 Compound Line III - E of FCM/Mill Conveyor 46.95 Compound Line III - SE Corner, Feeder Deck 198.36 * VAB.0001040800 Sample No. 78-66 78-67 78-68 78-76 78-77 78-84 78-86 78-87 78-88 78-89 78-90 78-92 78-93 78-20 78-21 78-25 78-51 78-52 78-73 78-54 78-55 78-56 78-78 78-79 78-80 78-81 78-91 78-134 78-135 78-136 78-137 78-138 78-139 78-140 78-141 78-142 78-143 78-144 TABLE IV (Continued) Location Concentration, Micrograms per Cubic Meter of Air Compound Line III - SW Corner, Feeder Deck 20.07 Compound Line III - E. of FCM/Mill Conveyor 4 Compound Line III - 3' E of E Dicer Line 46.63 3.31 Compound Line III - Mill Oper. Station 0.72 Compound Line III - Mill, Oper. Station 4.46 Compound Line III r Mill, Oper. Station 8.82 Compound Line III - SE Corner, Blender Platform 14.71 Compound Line III - 4f E of Blenders, Floor 6.44 level Compound Line III - 4* E of Blenders, Floor 20.61 level Compound Line III - Blender Platform J>460.46 Compound Line III - Control Room 2.45 Compound Line- III - SE Corner, Blender Platform 35.14 Compound Line III - Between Line 3 Dry Blend Charge Platforms, Floor level. 12.78 Dry Blend - Mezzanine Above 2nd Floor 27.9 Dry Blend - Mezzanine Above 2nd Floor Dry Blend - Mezzanine Above 2nd Floor 2.1 u 3.7 Dry Blend - Mezzanine Between 1st 2nd Floor 2.11 Dry Blend - Mezzanine Between 1st 2nd Floor 3.73 Dry Blend Mezzanine Between 1st 2nd Floors 3.04 Dry Blend - Basement, Blender Platform 4.05 Dry Blend - Basement, Blender Platform 9.03 Dry B1end - Basement Blender Platform 8.10 Dry Blend - Mezzanine Above 2nd Floor 23.15 Dry Blend - Mezzanine Above 2nd Floor 21.79 Dry Blend - Mezzanine Between 1st 2nd Floors 35.26 Dry B1end - Mezzanine Between 1st 8 2nd Floors 31.50 Dry Blend - Master Batch Platform, Between 10.35 Hoods Maintenance Shop - Spray Metalizing 5.24 Maintenance Shop - Spray Metalizing 3.19 Maintenance Shop - Spray Metalizing 0.75 Maintenance Shop - Spray Metalizing 1.64 Maintenance Shop - Spray Metalizing Maintenance Shop - Spray Metalizing 2.23 * 4.33 Maintenance Shop - Spray Metalizing 1.37 Maintenance Shop - Spray Metalizing 2.29 Maintenance Shop - Spray Metalizing 1.97 Maintenance Shop - Spray Metalizing 5.22 Maintenance Shop - Middle of Room 0.96 VAB.0001040801 11111111111111111111111111111111111111111111 111111 11 11 11 11111 n ............................................................................................................................................................................................................................................................................................................ i ....................................................mi.......................... ................................................. ; i ...................... i||iiiii|iii|iriiiini.............. * iaS m .A*****-** 1 1 i I 1111 1111 i -1111111 - 111111111111111111111 11111111111111 1111 1111 I : 11 I'h ...................... 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