Document 3ekabn2kERM6Z66ab0dzgRMB0

b- Interoffice Communication To A. H. Sather From Date j. V. Uptain June 27, 1978 * Subject CHEMICAL EXPOSURE MONITORING. SUMMARY SECOND QUARTER, 1978 A g>AT RECEIVED JUL 1 o m MEDICAL DftL I* COLOR WglGH,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 Standard. * 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 gross 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. m T mm * VAB.0001050184 } ** 4 A/ H. Sather June 27, 1978 Chemical Exposure Monitoring Summary Second Quarter, 1978 Page 2 A III. COMPOUND AREA HIGH-VOLUME AIR SAMPLING ft 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. * 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 M3 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. h T 4 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. Jerald V. Uptain jf Attachments c: GGD, DWF, Department Heads, DSC, B. Lloyd DAK, JJH, 4M VAB.0001050185 TABLE I COLOR WEIGH ROOM HIGH-VOLUME AIR SAMPLING 1/31/78 - 2/27/78 SAMPLE NO: CHEMICALS BEING SAMPLED: ELEMENT 78-1 Tribasic Lead Sulfate 78-2 - Barium/Cadmium 4 78-3 Dibasic Lead Phthalate, Tribasic Lead Sulfate 78-4 Tribasic Lead Sulfate 78-5 Calcium Stearate CONCENTRATION, MICRQGRAMS PER CUBIC METER OF AIR * 78-6 78-7 Dibasic Lead Phthalate, Tribasic Lead Sulfate Barium/Cadmium TOXIC LIMIT VALUE (TLV) Antimony Barium Cadmium Chromium Copper Lead Manganese TOTAL PARTICULATES 3.6 16.8 36.3 *0.2 h 0.3 * <0.5 <0.1 2,260 13.7 492.1 423.4 V <1.4 <1.4 217.4 *<1.4 21,200 9.5 82.7 59.1 2.5 m P <0.8 390.0 <0.8 9,200 6.3 20.5 1 18.2 <0.5 *<0.5 170.4 <0.5 5,700 8.2 253.4 31.3 0.4 0,4 171.4 <0.3 8,300 0 22,8 16.7 <0.3 <0,3 >"327.3 <0.3 4,300 IS.6 187.6 760.9 ' <1.9 *<1.9 291.9 **1,9 29,300 4 ** Equivalent Exposure (Mixture) 0.23 4.25 2.48 1.01 1.55 * No emission line observed for this element. All < or > values were outside calibration range. 1.77 5,71 ** Em C^ + C2 + Li L2 where: Em is the equivalent exposure of the mixture, C is the concentration of a particular contaminant, L is the exposure limit for that contaminant. 500 500 200 54.7 (As Cr in CrOj) * 1,000 200 4 500 15,000 * * 1.00 t * h * VA^.OCm050186 SAMPLE NO: CHEMICALS BEING SAMPLED: TABLE I (Cont.) HIGH-VOLUME AIR SAMPLING 1/31/78 - 2/27/78 78-8 Barium/Cadmium 78-9 Calcium Stearate 78-10 Antimony Complex 78-11 Antimony Trioxide 78-12 Tribasic Lead Sulfate (Non- Dusting) 78-13 Antimony Trioxide E LEMENT CONCENTRATION, MICROGRAMS PER CUBIC METER OF AIR Antimony Barium Cadmium Chromium Copper Lead Manganese * TOTAL PARTICULATES 7.3 <0.9 >867.1 <0.9 CO.9 162.6 . *<0.9 . 19,600 0 ft 20.9 8.6 <0.7 <0.7 * 70.0 0.7 14,700 0 74.0 32.1 < 2.5 % <2.5 575.3 <2.5 39,300 7815.3 * 2.4 5.7 1.7 <0.8 34.8 <0.8 11,400 59.3 0.7 42.6 0.7 0.6 >516.9 VO. 5 \ 5,700 >1729.4 1.9 3.2 Cl.7 <1.7 26.4 VI.7 44,900 % ** Equivalent Exposure (Mixture) 5.18 No emission line observed for this element. 0.45 3.24 1.87 f All < or > values were outside calibration range. 2.93 3.65 ** Em CL* 92.* Li 1*2 Cn Ln , where: Em is the equivalent exposure of the mixture,, C is the concentration of a particular contaminant, L is the exposure limit for that contaminant. TOXIC LIMIT VALUE (TLV) 500 500 200 54.7 (As Cr in CrOj) 1,000 200 500 15,000 T 1.00 VAB.0flpi050187 i 4 DRY BLEND HIGH-VOLUME AIR SAMPLING 3/1Q/7S - 3/21/78 -CHEMICAL BEING SAMPLED: ALKYTIN MERCAPTIDE- SAMPLE NO: SAMPLING LOCATION: E LEMENT * 78-20 Mezzanine Above 2nd Floor p 78-21 Mezzanine Above 2nd Floor 78-25 78-51 ,p imam* 1^^--> Mezzanine Above Mezzanine 2nd Floor Between 1st 8 2nd Floor 78-52 Mezzanine Between 1st 8 2nd Floor CONCENTRATION, MICROGRAMS PER CUBIC METER OF AIR Antimony Barium Chromium 1 Copper Lead Manganese Tin TOTAL PARTICULATES *<10.7 <1.1 <1.1 <1.1 27.9 1.4 1.4 16,000 *<29.9 <0.6 <0.6 <0.6 2.1 * 0.7 1.1 10,000 *<9.8 <1.0 <1.0 <1.0 * 3.7 1.4 1.0 13,500 0.11 0.09 0.02 0.02 2.11 m 0.06 0.48 750 + m 0.34 0.21 0.07 0.04 m 3.73 0.13 1.64 250 P ** Equivalent Exposure (Mixture) 0.20 0.10 0.08 0.02 0.04 * No emission line observed for this element. All < or ^ values were outside calibration range. ** Em * Ci + C2 + ... Cn Li L2 Ln , where: Em is the equivalent exposure of the mixture , C is the concentration of a particular contaminant, L is the exposure limit for that contaminant. m TOXIC LIMIT VALUE (TLV) 500 500 54.7 ' (As Cr in CrO 1,000 200 500 100 15,000 1.00 VAB.0001050188 DRY BLEND HIGH-VOLUME AIR SAMPLING 3/10/78 - 3/21/78 -CHEMICAL BEING SAMPLED: ALKYTIN MERCAPTIDE- SAMPLE NO: SAMPLING LOCATION: 78-53 Mezzanine Between * 1st 6 2nd Floor 78-54 Basement, Blender Platform 78-55 Basement, Blender Platform 78-56 Basement, Blender Platform E LEMENT Antimony Barium Chromium Copper Lead Manganese y r Tin > w TOTAL PARTICULATES 0.09 * 0.06 0.01 0.27 3.04 0.0s 0,67 860 CONCENTRATION, MICROGRAMS PER CUBIC METER OF AIR 0.47 * 0.14 <0.07 f' 0.33 0.17 0.03 *< 0.44 0.19 * 0.06 <0.07 4.05 0.10 10.12 3,400 0.07 9.03 0.11 0.57 1,200 0.10 8.10 0.22 2.29 3,600 < ** Equivalent Exposure * (Mixture) 0.02 P * No emission line observed for this e1enent. 0.12 0.05 0.07 All < or > values were outside calibration range. ** Em ~ Ci + C2 + . Cn Li L2 Ln , where: Em is the equivalent exposure 1of the mixture, C is the concentration of a particular contaminant, L is the exposure limit for that contaminant. TOXIC LIMIT VALUE (TLV) 500 500 54.7 (As Cr in 1,000 200 500 100 15,000 i VAB.0QO1050189 Oran D. Steffey To Date 10/17/78 Aberdeen Monitoring Results COMMENTS: 1) Chemical Exposure Monitoring appears good. 2) Continuous monitoring in tank farm area for: #5 process control should be questioned, #7 respirator air inlet should be questioned. PLEASE CIRCULATE TO ALL DOCTORS Dr. Massad Return to Dr. Steffey. VAB.0001050190