Document J3Z93JVK0046NY9weY2gk0p6v

COMPANY CONFIDENTIAL June 5 3-972 0. L. Bratsch C. F. Buckley STATUS - PCB POJ.LUTION W. C. Engman CCUTPCl PRCCRAM ______ P. E. Helsler O. A. Hippe P. B. Hodges - 0.0. 'EISFl TO Mr. J. R. Savage General Offices A. E. Leisy/R. M. Me dutchs- W. a. Richard - u.O.(TJA) B2SL This is June 1, 1972 status of PCB pollution control program. I. PCB 1EVEL ID SEWERS Aroclor sewer less control data are attached, t.m graph has been altered to better reflect trends. May PCB losses measured at the Waste Treatment Plant Influent are about double the amount of April and about five times the low established early in the year. The Treatment Plant Effluent losses are lower in May than April. The higher than normal PCB losses in the influent may have resulted for three reasons. 1. Major sewer replacement from the Aroclor department is in progress and cross contamination with ground water and leaching from the ground may have occurred. 2. Numerous Instances of off-gas imbalance in th9 HCi. distribution system may have resulted in sewering off-gas. 3. Incinerator start-up during month could have contributed to losses. A. Aroclor Department - Major sewer repair project and provisions for sampling shouLd be completed 1st week in June. Will eliminate cross contami nation with ground water and expect overall losses to be reduced. B. Total Plant - Isokinetic Flip-flop samplers were Installed at the Waste Treatment plant in Mev. During the month samples were obtained with the Flip-flop and with the old drum type sampler. Result.? -'-om the Flip-flop sampler at a monthly average of 91* #/day wa.s double the tf/duy avers-pe obtained from the drum type sample collector. Data from the Flip-flop are plotted on the graph start Inc in May. It was agreed the Flip-flop sampler will provide more accurate data. MONS 029275 Mr. J. R. Savage STATUS - PCB POLLUTION CONTROL PROGRAM Page 2 6/5/72 WOK I. PCB LEVEL IN SEWERS (continued) C. Treatment Plant Effluent - Isokinetic Flip-flop average losses at 14 #/day again are double the 7 #/day value from drum sampler. The latter approaches an all-time low, but we agreed to start using data from Flip-flop sampler. Flipflop data plotted on the graph. II. PROJECT STATUS Estimate No. 3500 - "Repair Sewer and Paving in Second Street" In progress. Did not complete in May but should be complete first week in June. Project 3972 - "Modify Aroclor Sewer Facilities to Permit Sampling all Sewer Streams" prepared, $11,000. To permit pumping from North Settling Basin to the South unit so that all flows from the department, will flow through the Parshall flume and sampling station. III. PROGRAM STATUS: Re Engman/Bratsch 4/24/72 "Program to deduce PCb Losses from Manufacturing Facilities" 1. HC1 Off-Gas A. Attempts being made to coordinate Aroclor - c/S production such that no 246 off-gas is sewered. B. Project premise prepared to provide required Instrument control scheme to accomplish A. Sam McWilliams engineering. C. Plant Research has found that both 1016 bottoms and Chlorosulfonic Acid are effective as scrubbing fluids for reduction of chlorobiphenyls from the Aroclor department off-gas. Design of a scrubbing system is in progress, and a project scope and estimate will be prepared to permit scrubbing all the off-gas from the department to limit PCB losses from 1 to 2.5 #/day depending on operating rate. HONS 029276 Mr. J. R. Savage STATUS - PCB POLLUTION CONTROL PROGRAM WOK III. PROGRAM STATUS: (continued) 2. Blow tank, off gas Amendment to substitute lime for air blowing to reduce PCB discharge to the sewer has been approved. Base data being accumulated and testing will be done in June. 5. Aroclor Department Catch Basin Minor modification made to effect more efficient skimming. Water flow reductions made from take over still Jet after condenser. Edward E. Stewart Technical Services Department /tm att. MONS 029277