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From: DAVID HARTWIG To: BWasson . Date: 12/10/97 5:12pm Subject: Senator Sewer LIne I walked the site this morning with FOSS and Century West staff and reviewed the area where the sewage spillage occurred. In talking with them, I determined that the issue is not another sewer line, but sewer stubs which run into the main. Normally, stubs are capped during demolition. Stayton Construction was to cap the stub lines to prevent spillaqe. They did not do this because at the time it was believed that construction excavation would begin soon after demolition and that the sewer main along the alley would have to be abandoned/replaced. I was not aware of this decision and do not remember that the issue was ever discussed with me or the representative from Century West. I talked to Tim Daley with the city this afternoon. He says that he discussed this issue with Stayton Const. at the beginning of demolition. Mike Stayton told Tim that further excavation would occur after demolition and that it would not be necessary to cap the stubs. Tim seems to remember that he told Mike that it would have to be done. Stayton Const. completed the demo work and left town before Tim got back to the site. Tim is concerned that future spillage wi11 occur and he will have a problem with DEQ. I am sure we would have a problem as well. He is sending me maps which he believes wi11 help us locate the known stub lines and copies of the five permits Stayton Const. took out related to these stub lines. I wi11 seek to get a general idea of the location of the lines with the help of FOSS and Century West. I intend to contact Stayton Const. and have them come up and cap the stub lines that we have knowledge of their location. When I talked with Mike Stayton he indicated that they would do this work as part of ttieir original agreement. ALSO, during the morning's walk, I discussed the contour work that needs to be done. It appears that in two cases the hole will basically be covered up if slopping is done to standard. On the Chevron corner, the slopping will deposit soil as well. This is a potential problem regarding excavation and compaction work for construction. There may be a need to pump water out of two of the holes to do this work. The water will be treated as is currently being done prior to release into the storm drains. To give you an idea as to how much water, there is @ 40,000 gals. in the Chevron corner. Century West has plots of each excavation site and the depth. These could be used by Pence/Kelly as a guide for the preparation for construction. It would appear that Pence/Kelly will have to carefully determine the soil composition of the whole area as they excavate any way, so this would not appear to be a big issue. I have asked Tom Gainer, Century West, to talk to Dave Hayes at Pence/Kelly for input. I will keep you informed as to the issues above. If you want more information, or if you have additional knowledqe of these issues, please let me know. The beat goes on ............... I will keep you informed. CC: MHansen,RCurtis