Document kzo3a9bL1DR18ByvYYB2w3ZB

i i ! INDUSTRIAL CHEMICALS DIVISION MEMORANDUM !' DATE: July 9, 1974 TO: Mr. W. S. Ferguson SUBJECT: VCM - HYGIENE The status of VCM ambient monitoring and emission abatement programs follows: 1. Monitoring a. Daily spcl ehecK monitoring for total hydrocarbons in process areas, controa ..com, and leading con^inui.s using the century organic .-.idlyzer. toir suc-:fic areas r.re being monitored ior VCM. nar?iv; loading, caustic scrubbers, VCM storages anu bullet,j . Twelve olhei. various points are monitored dail^'- ecr -otal hydrocarbons. VCM was detected on one out of twenty-two monitoring days. Concentrations in specific VCM areas ranged from<10 to 10 ppm dependent upon sample locations. Background on the other 21 days was <10 ppm with no loading or cleaning of tank cars recorded. Background ranges from 3 to 20 ppm as hydrocarbons in the immediate industrial complex, including public domain surrounding the industrial area. Date VCM Remarks 1 ^10 ppm Not loading when sampled 2 <10 ppm Loading, no venting 3 <10 ppm Loading, no venting 6 <10 ppm wot l when se^pl^d 7 <10 ppm Not loading when sampled 8 <10 ppm Luaaing, no venti'.ig y CO ppm Loading, no venting in vlO ppm Loading, no venting 13 <10 ppm Not loading when sampled 14 <10 pyr. Not loading when sampl'i IS <10 ppm Not loading when sampled 16 vlC ypm Loading, no venting pp.Ti Not loading when sampled 20 <1 ) ppm Not loading when sampled 4.1 <10 ppm Loading, no venting 22 <10 ppm Not loading when sampled ( ASI 00006900 Date VCM Remarks May 23 24 28 29 30 31 <10 ppm *10 ppm No Sampling 10 ppm <10 ppm <10 ppm Loading, no`venting Loading, no venting Instrument trouble Loading, venting thru dip stick Not loading when sampled Loading and venting b. Additional ambient samples were taken at different times, mainly during VCM loading, using evacuated gas collecting tubes and gas chromatography. Samples were taken on ground level and on VCM loading ramp. Dace VCM Remarks May 1 y 3 6 8 9 10 13 14 15 16 17 20 20 20 21 22 <1 ( pm 104 ppm 12 7 PU'i 1.6 ppm 21 ppm <1 ppm 1.7 ppm 9.0 ppm 115 ppm 1Q C T 0.9 ppm 145 ppm <1 ppm <1 ppm ppm N.^ 0.8 ppm <1 ppm Not loading when sampl-*1 Loading and venting, loader's upwind of vapors Loading and venting^ loaders up*" r.d ci vrgcr? No VCM loading in progress at time of sample. No one exposed. Loading VCM, purging VCM out of dip stick. No personnel exposed. Venting short duration 5-10 seconds. Loading and no venting. Loaders on platform not exposed. No VCM loading VCM loading - slight venting through dip stick. Sample taken downwind no employee exposure. VCM loading - venting; sample taken on ground level downwind. No employee exposure. VCM loadina,. ventir.^,. Cumple taken on ramp downwind. No employee exposui VCM loading. Sample taker, or. .anp. No employee exposure. VCM loading and tenting, sample taken downwind. Sample taken on VCM loading ramp; no loading in orogit-s. Sample taken at ^inyl spheres Sample taken at the NaOH scrubbers Foot of loading ramp upwind Down*., inu on loading ramp At foot of loading ramp - no loading in progress ASI 00006901 i 3 Date VCM Remarks [ay 22 22 23 24 28 28 28 29 25 29 30 30 30 31 31 31 <1 ppm <1 ppm 9.3 ppm C PPm N.D. N.D. N.D. 1.6 ppm 7 4 pom N.D. 24.8 p^in 65.3 ppm 70.2 ppm <1 PPm 1.5 ppm 2.2 ppm On loading ramp - no loading in progress Downwind of loading ramp - no loading in progress On loading platform; loaders not exposed On loading platform; loaders upwind, no exposure North end of loading ramp Mid way of loading ramp South end of loading ramp Downwind bn loading ramp, loading and venting thru dip stick; loaders upwind Downwind on loading ramo close to dome area of car; loauing and venting thru dip stick. Loaders u^win Upwind on loading ramp buwnwind of loading on ramp. No exposure, loading duu venting slight. Downwind of loading on ramp. Loaders not exposed, venting very short duration thru dip stick. Downwind of loading on ramp. Loaders not exposed,venting very short duration thru dip stick. North end of loading ramp, loading slight venting thru dip stick loaders upqind Walking downwind toward loading hoses; slight venting thru dip stick, loaders upwind Walking downwind toward loading hosest slight venting thru dip stick, loaders upwind hort Term Program SIctus a. The Model B Century Organic Vapf.r Analyzer was received, however s--Tipling tm dat* indicates that its use is ru-tricted to concentrations above 25 ??:: Continued use oi grab samples analyzed by gas chromatography is necessary. b. The MSA personnel monitoring "guipmer.c has still net neen received with no indication of delivery date. The Works has one on loan from MSA and will begin using same on July 9, 1974. ASI 00006902 c. A sixteen point sample grid has been designed as a basis for specification of a stationary G.C. analyzer system. Quotations have been receive'd indicating approximately $80 M in equipment cost. d. Robin-Tech is continuing to purge inerts from VCM cars, however, the need to purge small amounts during monomer loading continues. e. The ambient air sampling survey has been completed and a report is in progress. The report is expected early during the week of 7/15/74. f. The N, purge pressurization system (loading area) has been delayed further pending receipt of check valves; delivery date unknown. 3. Lone Term ogram Status The "58" Capxoal *<equi_*Ec for the VCM ver.L recovery system iGO 65301) is awaiting corporate approval(s). 4. Work Practices The Works indicates that the loading area air supplied respirator system is complete, except for the protective masks from MSA. Delivery is expected in early August. Or * J. Be - T MF/lmh J. M. DeVoe Manager Air & Water Control cc: E, E. James r. b. Cornell R, 3. Curtis R, Iteets A- J. Lavine J, R. Quinn W- C. Koch R- 3. Nelepovitz K. E. Gribben I Kurtz "a, 3. von Frank ASI 00006903