Document 993eJLEZQ6RgR2pg4M5krgvyp

cgMD E. I. DU FONT D^J^OURS& COMPANY P o Box 6090 NEWARK. DE 19714-6090 ENGINEERING DEPARTMENT Ncvember26,1991 AR226-2736 ^C: A. H. Pagano-Chem-Chambers Works H-w- Heath Jr.-Chem-Chambers Works S.W.C. Constable-Engr-L33E34 R. A. Relch-Engr-L3356 F. SEPULVEDA - DU FONT POLYMERS - D-12032-1 R. J, ZIPFEL - DU PONT POLYMERS - WASHINGTON WORKS EVALUATION OF SURFACTANT C-8 RELATIVE TO CHAMBERS WORKS SUMMARY: Washington Works is currently discharging the surfactant C-8, (Ammonium Perflurooctonate) in a wastewater generated from one of its processes, to the Ohio River. Washington Works would like to decrease the amount of C-8 being discharged into the Ohio River. An alternative method of disposal would be to send additional wastewater containing C-8 to Chambers Works for treatment. Currently Washington Works is sending 12,000 Ibs./year of C-8 mixed with wastewater by rail care to Chambers Works and would like to increase it to 24,000 Ibs./year. The surfactant C-8 is not degradable by biological systems. Thus Washington Works has requested Engineering to determine the fate of C-8 in the Chambers Works wastewater treatment system and the Delaware River at the proposed loading of 24,000 Ibs./year. It appears that the increase of C-B to 24.000 Ibs/year to Chambers Works will not affect their NPDES permit Also the point at which Chambers Works discharges into the Delaware River is brackish water thus not suitable for drinking water. Specific comments, conclusions, and recommendations are presented below: o Currently no data exists on whether C-8 will bioaccumalate in fish tissue. However, an estimation of the octanol-water partition coefficient predicted that C-8 will not accumulate to large concentrations in the fatty tissues of organisms. o Washington Works would like to concentrate the wastewater going to Chambers Works to reduce the amount of wastewater that needs to be sent. Therefore an evaluation of the Chambers Works ability to handle the increased concentration of pollutants form Washington Works should be completed. An E/BOD Test to determine if the increased concentrations will effect the PACT system should be done by Chambers Works (Stan Temple), Engineering, thru the Engineering Test Center or Washington Works. Company Sanitized. Does not contain TSCA CB1 o The percent removals of C-8 across the PACT system should be determined. CWuorrrkesntalyctaivbateendchcasrcbaolne ttoesdteiteerpmlainnenetdhebyamWoausnhtinogf troenmoWvoarlkosf wCi-t8h bCyhathmebPeArsCT system. o It is recommended that Chambers Works equalize the Washington Works wastewater as much as possible to reduce concentrations within the PACT system and the discharge outfall, if this is not already being done. DISCUSSION: 08 In review of the proposal to increase the amount of the surfactant Ibs/year to 24,000 Ibs/year the C-8 to be following was treated at Chambers Works from 12,000 the fate and impact of within the Chambers Works WWTP evaluated to determine and the Delaware River: o Chambers Works NPDES permit o Concentrations of C-8 at outfall 661, outfall 001, edge of the zone of initial dilution, and the edge of the mixing zone. o The disposal of the activated carbon in relation to C-8 Attachment 1 outlines some human health and aquatic toxic'rty information on C-8 rtheleatAivmeetso tCehsatm. tbheisrsinWfoorrmkastiNonPDshEoSwpsetrhmaitt.theIn sruerlfaaticotnanttoCa-q8uwatililc ntooxt incietgyatteisvteilnyg and impact the permit The Chambers permit does have a testing requirement for surfactants; however, it is only a monitor and report requirement. The Delaware River at the point which Chambers Works discharges is brackish, thus drinking waters concerns are not present. The concentrations of C-8 were calculated at the following points; outfall 661, initial dilution, and the edge of the mixing zone (Figure outfall 001, edge of the zone of 1). Table 1 shows the current and proposed loading concentrations at the points identified above. Note, these concentrations were based on the assumption that no treatment occurs in the Chambers Works PACT system. If the surfactant C-8 is attaching/coating to the activated carbon, the C-8 would be removed with the carbon once wasted. Chambers Works is currently disposing of waste PACT carbon to an onsite landfill. However, in December 1991 Chambers the wasted carbon to reuse within the PACT system. The Works plans to regenerate multiple hearth furnace with counter current flow. carbon regeneration system First the water in the carbon is a fines will evaporated at 212 F(100 C), then the poralysis of trheegecnaerbraotnedfi.nTehsewsilul rofcaccutarnattC1-080v0oFla(t5il7iz3esC)atan39d2laFs(tl2y0t0heC)PaAnCdTdceacrobmonpowsiellsbaet 752 F 'Company Sanitized. Does not corilalnTSCA CB1 08 (400 C) to C02 and HF. Therefore any removed by the PACT carbon will be destroyed during the regeneration process. An evaluation was performed by Tony Rogers of Michigan Technological University on C-8 to estimate the octanol-water partition coefficient (Row) to predict the ability of C-8 to accumulate in the fetty tissue of organisms. His evaluation is in attachment 2. Based on his evaluation it was predicted that very little of the target chemical will partition into a Ijpid phase and therefore will not accumulate to large concentrations on the fatty tissues of organisms. DU PONT ENGINEERING Water Quality Group :T. "B^<2-JL, J. B. Ruiter Consulting Engineer JBR/kcl Company Sanitized. Does not contain TSCA CBI H SE k. 0 0 " M s M00B0" n BOO s ^g 01 s s 2 M f B != u o i a B o M%6 M H B k. J 4 I ^ c"? 5 n IE s s s " " g 8 s g k " 2\ ^* _ ,, << r. NS; N <* o ,, - g OB'OO"-^1'^0* ^ fr,B-- U .!.?.?. ^;^^ u -p 2S 5 * mmOBit ,S,4_r45H u00*u1 -S<tM^K;U--- L.i-^ .S m * B SB<NnB3 -M " '--" U31OWO>A1- ^t^xK;U-* .'??? ua< *> B <" IAwx4'fl S' * *9> --'"" t3-<e"e>."" 5O^fr<.-B"'" . -- u'- *B' "..'I^"I'^IBH*2' *=3' "->^c'''r-; iroo^-- Company Sanitizedl. Does not contain TSCA CBt Cooling Water - A^. Outfall 661 (18.9 MED) Chambers Works PACT System Influent Washington Works C-8 18,000 gallons Figure 1 Company Sanitized. Does not contain TSCA CBI