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Minutes of the Arden Hills Regular Council Meeting, May 14, 1990 Page 7 . CHANGE ORDER (COnt'd) Goudreault advised that when Delta prepared the well abandonment specifications there was not substantial information located relating to wells # 3 and #4, therefore, assumptions were made by Delta regarding the depth and diameter of these wells. He explained another problem occurred when sand was found at the bottom of the wells and to properly abandon the wells this sand will have to be pumped from the wells, then the wells will be televised, an analysis be CCIIpleted and then process f= abandorunent will begin. Goudreault stated that Bergerson--<::aswell provided an estilnate of additional costs for =npletion of the well abandonment and that it is based on an estilnated two and one-half days of work per well; it is not a fixed rate. The Clerk Administrator stated that Engineer Maurer reviewed this matter and expressed concern that the pump for the wells was not removed to determine the depth of the wells; also noted the 6 inch casing on the well usually indicates a carrnnercial well and nomally those wells <Ire deeper than originally estilnated. Goudreault stated pump removal is not usually done prior to suJ:xnission of a bid quote and he was basing the depth of the well on his infomation relative to depths of wells in this area; noted he has worked on a number of projects for TCAAP and is familiar with this area. . Councilmember Malone expressed frustration that the City hired Delta to provide the expertise on well-abandonment and this is the second change order that has =ed after Delta's assessment of the site. He questioned if any other problems are foreseen which will require additional funds to be allotted to the demolition. Mayor Sather also expressed dissatisfaction with Delta allowing the contractor to underground storage tanks from another site for disposal at the Kem Milling site. Goudreault stated he did not foresee any major problems requiring additional funding at this time and that Delta was not aware of the contractor's intent to bring in additional storage tanks for disposal purposes. He advised that Darrell Ohman has been placed in charge of the site demolition and he will keep the council infonned of all activities. Attorney Filla commented that Delta is representing the city not the contractor and as the city's consultant it is the consultant's responsibility to convey to the contractor the City's concern regarding the additional costs of well abandonment. Filla referred to the bid quote contract tenus which relate to "change orders"; the contract two alternatives for resolution of change orders, one method would be to bill the City on a time and materials basis and the other would be to negotiate a sum of money. . Goudreault explained that he asst.nneS responsibility for the miscalculation of the depth of the two wells; suggested the city could solicit bids for follow-up action from sub-contractors, with the additional knowledge obtained regarding the wells, and select a different contractor or the City could maintain the current contractor and pay only for actual hours spent on the job, on a time and materials basis. He advised if the City prefers to re-bid the well abandonment, Delta will not charge for this service. Mayor Sather suggested the Council invite the contractor to the next worksession meeting to discuss the matter.