Minutes of Citizens Information Committee June 1996 Attendees Michael List, CIC Chair Dave Novak, U.S. EPA Community Involvement Coordinator Dan Hopkins U.S. EPA Remedial Project Manager Dan Sparks, U.S. Fish & Wildlife Resa Ramsey IDEM Iris Kiesling, Bloomington City Council Evelyn Brophy, City of Bloomington Utilities Mitch Rice, COPA Meeting was begun at 7:00 pm, and the minutes were approved Dan Hopkins: EPA had developed a Draft Ecological Sampling Plan for Lemon Lane and has now received a draft outline of Health, Risk and Ecological Assessments for Lemon Lane and Winston Thomas from Westinghouse. It is anticipated that some talks about the two documents will result, and some give and take will be required. There is some question as to what is an acceptable risk assessment format. When this process is complete, the results will be released to the public. The formats may be site specific, as there a re different requirements for each site. Winston Thomas - A map of the Winston Thomas area was brought out and examined. The area in question is outside the metes and bounds of the Consent Decree, on the south end of Winston Thomas, and on the southwest side of Clear Creek. Sampling of the area was done by Westinghouse in a systematic manner, using a mapping of the sinkholes in the area. Apparently the sinkholes had been filled with sludge, and then capped to make a level surface. The sampling was performed using an auger. Samples were taken to a depth of between 32 to 36 inches. Some of the areas tested and found to contain PCBS are beyond the metes and bounds of the Consent Decree, but it seems that Westinghouse is willing to deal with these, as witnessed by their willingness to test outside the metes and bounds of the Decree. Evelyn Brophy: Substantial effort was used to identify the covered over sinkholes. A mapping of the sinkhole area was obtained, and then holes were bored in the indicated areas. If black sludge was found, then holes were bore in a ten foot radius around the find, and the procedure repeated until no sludge was found. Mitch Rice: Is there a hydrological study of the area that indicates where the sinkholes lead, perhaps springs or underground streams? Hopkins: There are springs in the area Brophy: Southwest of the site near the creek, there is a lot of seepage. It is very wet there. Historic maps show that there were many sinkholes in the area to the south where the trailer park now is. Hopkins: Sampling plan - Winston Thomas Westinghouse has submitted a sampling plan, it just came in, so we have not had a chance to look it over. However it is based on a plan they submitted several weeks ago, and we have a pretty good idea of what is in it. It is intended to get a pretty close volumetric estimate of contaminated material at the site, and to develop some parameters for remedial action. This is happening kind of fast, but this because we want to be able to begin work as soon as possible. Digesters - A structural engineer and an inspector from Indiana Dept. of Natural Resources, Division of Water made an inspection of the digesters and the berm around the tertiary lagoon. . T A structural engineer from the Army Corps of Engineers inspect ed the cracks in the digester tanks. An engineer from the Army Corp of Engineers and inspectors from the Indiana Dept. of Natural Resources inspected the berm (or embankment) surrounding the tertiary lagoon. The digesters seem to be in relatively good sh ape, and pose no immediate threat of failure. The berm has some problems with muskrats and roots from trees, and is in need of regular inspection and maintenance. Rice: Who is in charge of the berm maintenance? Hopkins: This has been the object of some discussion, I think perhaps the City has the main responsibility. Hopkins: ABB Plant Westinghouse has also submitted a draft plan for remediating the area around the water tower at the ABB plant. Of course this will cause a certain amount of disruption of work at the ABB plant. (Maps of the ABB Plant [are] were brought out.) This is t he last area of the plant that needs to be cleaned up, and the intention is to do the work this summer. The asphalt and concrete that now cover the area will have to be removed. There are several contaminated areas to be seen, with several spurious finds. Contaminated water apparently followed the utility cuts, and they will have to be cleaned out. There are some surface drains across the asphalt surface of the tower area into the already cleaned up portions of the site. The work here is expected to be done this summer. Lemon Lane - Sampling The parties have been discussing what must be done at Lemon Lane, there are many different ideas about what should be done, and what is appropriate to be done. Also at issue is what is to be done at the Illinois Central Springs. There is no doubt that some sort of treatment plant will have to be built, and the problem is with the times of high flow through the system, when the volume of water seems to wash out high volumes of PCBs. We need to come to some sort of concept of what will be needed here, based, in part, on an ecological risk assessment and an evaluation of control techniques. Rice: Well, at the Consent Decree Parties information session, I was talking with one of the Westinghouse representatives, and he was indicated that Westinghouse felt that these high water volume incidents happen only once every three to five years, so a large plant is not needed. I asked "Were you not around last night, or last week or next month, we just had the wettest Spring in decades, and we are one of the rainiest places in the U.S." Hopkins: There is the issue of how much water must move through the cave system before the sediment is stirred up enough to significantly raise the levels of PCBs coming out at the spring. Storms that are that strong are not all that common. Rice: Is there data to back that up? Hopkins: Yes Iris Kiesling: While this may have been true in the past, for the past months it has not. There have been locally very heavy storms, and the saturation point has been reached and exceeded. Rice: Having lived in the karst area west of town for 12 years, I can tell you that it is incredible how quickly the water can fill the karst. And with the size of the local storms, you may be dealing with the force, the speed of the water moving, not the volume. Anyway if there is data to support the idea that high water events are an infrequent happening, I would surely like to see it. Is it not also possible that when the karst becomes filled with water, that it can then migrate upwards into the Lemon Lane sinkholes, and thus cause more toxics to be released into the karst? Hopkins: Yes, we have contended that this could be happening. The base amount of what is coming out has been established by Westinghouse. They are monitoring the water level in the monitoring wells and the stream itself. They have calculated a number that they feel represents sufficient volume of water to cause t he PCBs to be entrained. There is a base flow of about 10 - 20 ppb., and this is for the majority of time. The high volumes and velocity needed to entrain the sediments in the karst are just not that frequent. Rice: All you have to do is look at the site, there is an area between where the Springs come up and where the water goes down the Swallow Hole. This area is covered with a fine layer of mud, kind of swampy, and you can smell the PCBs volatilizing into the air. Hopkins: This is not to say that the base flow of 10-20 ppb is not significant, in fact we are certain that some containment and treatment of this water is needed. Novak: Report on the CD Parties Information Sessions- There were about 15 people at each of the two sessions, and there will be a follow up in the next issue of New Directions. More sessions will be held as more information becomes available. Sanjour Memo Hopkins: We have heard nothing about the memo, Region V has not been contacted by Sanjour or Martin to date. Rice: They are currently on vacation. Hopkins: There are issues related to this, bigger than this, that need to be hashed out. There is the question of why this memo was leaked to the press, and whether it should have been released. A Regional ombudsman is being set up by Region V. We have discussed whether we should have a public meeting about this. Rice: Have you formulated a response to COPA's letter asking for an RIFS? Hopkins: No. We are following essentially the same process as we would if we were doing an RIFS, and we will allow public comment before issuing a Record of Decision. Rice: But will we have the same sort of legal standing with your ROD as we would with the procedures outlined for an RIFS? The reason for the community's distrust of the process is that up to this point we have been excluded from making formal comment. The community perceives the Consent Decree as a work of collusion between Westinghouse and the EPA, with the City as a willing guinea pig for an experimental technology. Michael List: If the Consent Decree is examined and determined to be invalid, would this not shift the balance of power, allowing more input from citizens and their elected representatives? Wouldn't this be better than the present situation? Hopkins: There is some validity to your point. List: More dialog is needed, and more public involvement. Would it be possible to include a representative from the public in the Consent Decree parties' deliberations? Hopkins: I have advocated this, but it does not seem likely at present. I know that all the parties now are interested in taking input from the community, that we want more involvement, so that this process can move forward. Rice: How do we get the latest update of the CD parties report concerning the timeline? Hopkins (Novak): It is probably best to get it directly from the Court. Rice: We are having problems converting the Timeline document given to us by Westinghouse. It is in a proprietary format, and we can not even open it with the programs we have. We will keep working on this. Next Meeting July 18, 1996 7:00 pm McCloskey Conference Room