Document oD7y6DM5pLRd4qqZRzXwnYa8w

# MCI,,141 . I' \ JOB NO;- PROGRESS REPORT 1 TECHNICAL SERVICES DEPARTMENT SQ 10077 REPORT:DATE:- Dlitrlbutlon:- Newport D. B. Shearn F. MacDonald A. F. Regan A. C. Nethercott Dr. H. R. Newman H. Disley J. D. Humphries J. W. Pennington P. J. Clelland N. Bodger ,, N.I.C. (2) Ruabon H. A. Vodden Brussels D. S. Cameronit N. H. Dahlstrom E. V. Weekes 1 27 )130/233 3 Ou . o Co' No. 14. 11th May, 1970. St. Louis G.O, W. Papageorge E. Wheeler R. Keller-- D. Danna (3) W. A. Kuhn TITLE: Environmental Contamination by P.C.Ba. PROBLEM: To report the minutes of a meeting held at Newport on 4th May, 1970. AUTHOR: N. Bodger (A. C. Nethercott). SUMMARY: This report is intended to summarise the discussion at the meeting held at Newport on 4th May to discuss environmental contamination by P.C.Bs. Its purpose being to supplement the summary of the presentation given at the meeting which is attached as an appendix to this report. N. Bodger Technical Services Department The information presented in this document is confidential, and the recipient is responsible for its safekeeping. It must not be dis closed in total, or in part, outside Monsanto without prior clearance from the appropriate authorities. ) HONS 059565 DETAILS O ) A meeting was held at Newport on 4th May,1970, to discuss environmental contamination by P.C.Bs. Present at the meeting were:- W. Papageorge E. Wheeler R. Keller D. S. Cameron F. MacDonald A. F. Regan A. C. Nethercott Dr.. H. R. Newman H. Disley J. D. Humphries P. J. Clelland N. Bodger Presentations were made by Messrs. MacDonald, Regan, Disley, Humphries and Clelland and a summary of these is appended to this report. A general outline of the effluent situation into the Usk Estuary was presented in which it was pointed out that the rise and fall of the tide in thiB area was about 35 feet, among the highest in the world. The plant history and present mode of operation was outlined, and the effluent streams indicated. The effluent streams include, spent Fullers earth, spent p.irocel, vapours from air blowing, effluent from still ejector, still bottoms, leaks and spills and the HC off gas line. At this point the question of the PCB content in the HC' off gas line, and consequent PCB content of the muftaticacid, was raised. It was suggested that MCL check up on the uses of HC1 Via Tankers and attempt to prevent its use in food processing industry, this to include any Buch hydrachloric acid used on site for Fumaric production which could eventually find its way into food applications. It was suggested that all HCL which could find its way into food processing was supplied from that produced via the silicon Esters process on site. The PCB content of HCL at Annistan was 2-20 ppb and at WGK less than 5 ppb. There was some blending of HCL from other plant sources at WGK. - It was reported that MC plan to stopr in U.S.A., not only sales of muriatic acid to food processing industries, but also to withdraw from the market in Aroclors in all areas where food contamination is remotely possible, for example, the use of Aroclor as a heat transfer fluid for cooking food. It was stated that all PCB containing waste from Newport is sent via Purle Waste Ltd., to a toxic dump at Pontypridd. Samples from streams in this area, taken by Monsanto Newport personnel, indicate a P.C.B. content of less than 4 p.p.b. This site is an approved dump for industrial waste only and it has been agreed that Monsanto sample the area for P.C.B. analysis at 6 month Intervals. Next discussed was PCB contamination in the liquid effluent from Newport. The site programme for controlling this via construction of interceptor pits, bund walls and waste bays waB outlined (see appendix). ) HONS 059566 . - If / Insufficient information, at present, precludes the possibility of setting a target level for PCB in the works effluent. It was sug gested that, as an immediate aim, the target should be to have a PCB level no greater than that which matches the solubility of PCB In water l.e. 200 ppb. A tentative target of 10 opb max, by end 1971 has been set for U.s.A. plants. Some analysis had been made at WGK for PCB content of the air surrounding the plant but actual lb/day discharges were not easy to determine. It was recommended that Newport try to determine vent losses, in particular these from ventilation systems. It was stated that Monsanto have been approached for information on P.C.Bs. by Bristol University, who apparantly are to carry out a survey of P.C.Bs in fish in the Severn Estuary. They were refirred to Mr. A. Vodden for information. The discussion then progressed to cover the disposal of waste Aroclor from customers, particularly the resale of paper off cuts by firms such as N.C.R. and Wiggins Tepe. No recommendations arose from this dis cussion. Incineration of PCBs as a means of disposal and details of trails performed on an existing Purle Incinerator were discussed (see appendix) M.C. are considering incineration as a means of disposal of waste PCB and are performing trials in conjunction with the Zinc Corporation, and are at present taking back waste PCBs from customers for disposal at a charge of 3d. per yai*ea.ppwyi. The problem of disposal of empty Aroclor drums (estimated use in Europe >5-6,000 per year) was discussed and it was suggested that a modified form of drum, with no lip around the outlet, be sought to permit more complete draining of Aroclor from drums. It was estimated that at present up to It of the Aroclor remains In the drum after emptying, although trials at Newport showed 0.5 lb when hot and 3 lb when cold. Substitutes for Aroclor in the paint and paper industries were discussed The possibility of construction of an HB40 plant in Europe, either at Newport or Antwerp were discussed, the HB40 produced to be supplied mainly to NCR for paper manufacture. It was pointed out that in USA MC. are developing a plant to produce M.I.P.Bas a substitute for Aroclor and HB 40 in paper manufacture. It is possible that this product will be required by NCR in preference to HB 40 and may thus have some bearing in any HB40 project. Although this does not seem very likely in Europe. Other points covered were the uses of Aroclor in jet engine oils made by Castrol (about 30 tons/year) and the possibility of contamination from this source; and the use of Aroclor containing paints for painting the interior of silos and water tanks. The latter have led to the discovery of PCBs. mainly of the 1254 grade in cows milk. The question of how to handle any fears which may arise among plant operators in the advent of any publicity on toxicity of PCB was raised. It was pointed out that there have been cases of chloro acne and slight liver damage among Aroclor workers who have inhaled large quantities of PCB fumes. However such cases are very rare, especially when viewed .igainst the large numbers of people who have worked with Aroclors for many years without any adverse effects. MGNS 059567 o) Information on follow up with customers to control PCB emissions and on results of effluent sampling schemes at Newport are presented in the appended summary of the presentation. Animal toxicity studies currently being carried out in USA with PCBs. indicate that the higher Aroclors 1254 to 1260 are more toxic than 1242 to dogs and rats. These results, however, are contradicted by tests on chickens in which 1242 would seem to be the more toxic. Nevertheless all these experiments indicate that PCB 1b far less toxic than D.D.T. Studies on hydrolysis of Chloro benzenes indicate the possibility of the formation of tetrachlorodlbenzyldioxide which is highly toxic with a lethal dose of only 0.6 mg/kg. It is possible that, under the right conditions, the hydrolysis of Aroclors could lead to the formation of a similar mono oxide compound which would also be quite highly toxic. Toxicity studies on HB40 indicate a far more promising situation, the lethal dose for rats being in excess of 30,000 mg/kg. NB/CL 11th May, 1970. MOhS 059568 <) APPENDIX ) SUMMARY OP PRESENTATION GIVEN AT MEETING. HONS 059569 SEVERN FSR/ARY SHOWiNC PC.B_ CONiCENITR/VTIOMS A~r POUR. >-OCA.Y) QiNi St. MONS 059570 ! O ) MOCLORS EFFLUENT COLLE.C.'nOrN SYSTEM t l Street KNEW TOX/CWA&T gA-y Sw STB#AGC | ARE* , i\lt.w , er^it/cN > LOAD/^f Shco ..............>- FR storage A*?* I I l I NEW SudFACC w/t .t* 'NT&tccflroK tfi ( HONS 05951Z ( Date i *1 ! Dec. 10 11 23 30 Jan. 5 . 11 20 27 ' Feb. 3 . 10 17 24 Mar. 3 ' 24 Apr. 1 '7 14 ! C.B. Samples ex. Plant Newport Interceptor Pit p.p.b. -- Milk of Lime Tank p.p.b. Ejector Hydrochloric , Stream p.p.b. Acid p.p.b. ! 3,250 13,250 Paraffinic 13,100 -- 7,170 203,200 20,720 7,730 2,850 750 1,720 1,185 785 Hi Boilers 33,520 15,750 11,750 55,830 8,550 22 53 56 150 32 3,790 6,600 260 22,240 90 None Detected ' \ J/ . ' ` 190,000 48,000 9,000 4,600 57,000 37,500 7,000 1,500 6,200 375 250 _______________________1 HONS 059573 IJc.B. IN NEWPORT EFFLUENT .ATE P.C.B. CONTENT P.P.B. Dec. J an. V* 10 11 12 15 16 17 18 19 22 23 24 29 30 31 1 2 5 6 7 8 9 12 13 14 15 16 20 4 17 36 320 27 68 4 130 37 238 14 28 55 510 600 1,500 1,400 1,400 3,250 1,430 5,560 7,030 2,950 1,940 3,200 s DATE P.P.B. COMPOSITE SAMPLE DATE P.P.B. Jan. Feb. 19 20 21 22 23 26 27 28 29 30 2 3 4 5 6 9 10 11 12 13 16 17 18 19 20 23 3,330 1,770 4,030 930 2,000 520 070 525 830 360 750 800 1,270 820 225 520 490 835 120 1,550 23J 580 25] 25 180 28 281 270 301 30] 310 4 6,610 n 520 9 10 11, 12 13, 16 15 17 16i 22 22 24 Feb. 25 TO Mar. 25 28 samples to be analysed Mar. Apr. 26 1 2 3 5 B 10 12 14 17 19 22 580 6,250 12,500 8,500 120 310 450 155 125 1,860 1____________ Total Newport effluent is approximately 1 million imp. gallons per day. 100 ppb = 360 lbs. p.a. of P.C.B. The break in the figures after January 2nd is caused by the rerouting of surface water drainings into the works effluent. Previously this surface water had been draining into a reen and samples taken around the reen had P.C.B. contents of 9,750 p.p.b. 10,000 p.p.b., and 6,000 p.p.b. Figures quoted prior to March the 26th are based on analysis results from Ruabon. All subsequent figures are based on analysis at Newport using new equipment which has just been installed for this purpose. HONS 059574 o 'I Control of P.C.B. Emissions at Newport Completed 1. Building of bund walls around Aroclor F.P. storages. 2. New Interceptor pit In effluent from storage and loading area. 3. New interceptor in surface water drain. 4. Concreted area for storage/cleaning of Aroclor totebins and tankers. 5. Divert water from Aroclor ejector to effluent from surface water collection. 6. Modify existing Aroclor building interceptor to retain heavy materials. 7. New rubbish bay to segregate all P.C.B. containing wastes, this bay being connected to the interceptor in 2, above. Planned 1. Install capacitance type level alarms in all three interceptors,, NOTEi The interceptor pits are to be sucked out into a Purle waste tanker and the material taken to the Pontypridd toxic dump for dis posal. MGNS 059575 (.) Purle Incinerator ) Incineration temperature 1300C. Residence time 3 secs (approx). Capacity 500 lbs/hr (on test run). Will accept only liquids or suspended solids. Effluents from Incinerator Aqueous scrubber liquor. Stack gas. MOMS 059576 u ) POMTyP^ / D> DUMP -5ITF. ^AMpLt TMKEM FROM A.LL rvj I fvJ cl POIMTi. XHOWW HAD Pc. a.. com re.Mrs /W THE HAMCE 3 15- S' p.p b. MOWS 059577 () Customer Visits Programme Customer Date Visited N.C.R. Wiggins Teape Ltd. Nivelles, Treforest. Hunts Oubilier Erie Bel.C.C. T.M.Cu R.I.C. 8.1.1970 3.2.1970. 2.2.1970. 6.3.1970. 6.3.1970. 6.4.1970. 6.4.1970. 8.4.1970. 10.4.1970. ) Personnel J. D. H. /A. D. T.B./D.S.C. J.D.H./T.B. J.D.H./D.S.C. J.D.H./D.S.C. P.J.C./D.S.C./J.M.T. P.J.C./D.S.C./J.MTT. p.j.c./d.s.c./j.m.t. P.J.C./D.S.C./J.M.T. Customers to be Visited 55h Capacitors )" VlBits to be arranged b* Marketing. HONS 059578 .' JTAIKJ/Mg W^TL ) ^AA^UFACTUP A9uOU ^EFFLUci'Jl tiVt? AarW, elc still 'norrc^s -, /l L AKJ f^rLI. . RLTEittAKE t'C. -to landfill DJl/Mi I O LANDFILL Asm rypie r qcj , ^DeO L&Z-f ANMUM Lie, AMUO%tfk ELECTRiEAL , .*5 APPLICATION^ tH f0 FA !L=!i CAPACITORS. | C30,ooo atc/iuuu* I ACTS?. CAiti; i. iO loo, <TiOr> LAs/Am % Ct fifc C-AG.C ft lUD<SC . lOc^ooa lMsj h.KHjn'f: \N.C.R. PROCEED 3r%T)- PAPER CoKiiNG U&c-o PAPER. ITODASlILA^Ci MATERIAL WASHES ^ A OUl CaJ l T~PTlOLNT 1 aiOrIiS OT-i U1 S, O-jT - / M _tL J yother applications sj l MCNS 059579 ' * SUITABLE TOfe 9 incineration fly Purle. o) O n.c.r. boreham wood AROCUOR lA^Jl--I'STORASE - CM(Jk.9IONi M^OrACTUH8 -> s^ragc -- Roao "tank sp^l aces s' suw Ate . WATER r^jtoop.p.tv/ / N0TrausAt\OM (s, 360 ppk.) . ooAQUtft-no(>| 5PILLACES i Bai>OK (' I, tiOppk WATfflA i$2,Moof.ph rivoS I MUWlClRAl ircyTEAusA-noH (S3, soo pp\y I SEWAGE WJORX.S Surface WATER. RIVZK ^ COLN6 ________________1 recommendations 1,. Provide full off-loading instructions for tanker driver and N.C.R. 2. Fit interceptor pit in surface water system. 3. Improve level indicator on storages, 4. Give all N.C.R. effluent coagulation treatment. ( HONS 059580 ) N.C.R. BOKEHAM WOOD 1. Centrifuge effluent Neutralisation tank 2. Main neutralisation tank. 3. Stream to which surface water discharges 4. Aa 3, with mud from bed of Btream 5. Surface water drain 53,500 p.p.b. P.C.B 5,360 p.p.b. P.C.B 1,620 p.p.b. P.C.B 152,500 p.p.b. P.C.B 31,200 p.p.b. P.C.B Wiggins - Teape Treforest 2nd Feb. Plant Effluent 150 p.p.b. PCB Nlvelles Belgium 3rd Feb. River La Thlnes as It enters W-T property 34 p.p.b. P.C.B. Mill effluent before separator plant 98 p.p.b. P.C.B. Liquid entering settling lake after separator plant 219 p.p.b. P.C.B. Steam Drainage from solids dump 26 p.p.b. P.C.B. Mud from effluent settling lake NIL Liquid- from River La Thines as it leaves W-T property NIL HONS 059581 WIGGINS - TEAPE LTD Use NCR product at 1, Treforest 2. Nivelles. Waste Aroclor contained 1ns- (a) Plant effluent as a result of washing down machines, storage tanks etc., and surface drainage. (b) Paper off-cuts. Disposal Methods 1. Treforests (a) Plant effluent - via Treforest Industrial estate trunk sewer to Bristol channel. tb) Off-cuts - mainly to "Birmingham Waste Ltd 2. Nivelless (a) Plant effluent - River La Thines and eventually North Sea. (b) Off-cuts - via an agent for repulping In Germany. HONS 059582 CAPACITOR MANUFACTURERS Customers Disposal Method for All Aroclor Waste ;Irapregnator j Vapour _____________________i________________________ Degreasing Sludge Failed Capacitors Scrap Windings Spent Alumina HUNT Discharge to atmosphere Formerly on Car Park now disposed of by contractor. Drained, any waste removed by contractor Not Known, Assumed buried Removed by con tractor , presuma bly buried. Leaks and Spillages Via rags for dis posal by contractor DUBILIER ERIE Sold to Atlas Chemi cals any waste pac ked in used 1254 Drums. All disposed by Contractors who use two tips one dry and one full of water. Waste accumulating at Factory. Purle waste Disposal Ltd. ' They Will contact Via drains to normal sewer B.I.C.C. Disposed of by Purle Dumped in - Disposed Via drains Waste Quarry by Purle to sump or Waste sewer T.M.C. Local dump Disposed by Purle Waste - Local dump Via rags for disposal by Purle Waste R.I.C. Discharged to atmosphere Local dump -- - Scrap Merchant Burnt or Buried Local dump Via stream to River Test MGNS 059583 > o General Recommendations made to Customers 1. Define and use an adequate off loading procedure. 2. Define and use an adequate procedure for dealing with leaks and spills 3. Ensure all Aroclor waste Is burled on a dry tip. 4. Construct a bund wall around the storage Installation. 5. Ensure Aroclor does not leak down open drains nor Into streams or rivers. MONS C5S584