2003/12/31 Council Agenda Packet

Project: 5 Change Order no. Change Order Effective Date: Item#6—Remove Catch Basin. Plans called for the adjustment of the existing old style catch basins to grade. These old style catch basin and frames are a one-piece structure that does not allow adjustment of the frame and grate without destroying the structure of the catch basin. Additionally these old catch basins have no"catch"or"depth"to them. The decision was made to remove these old style catch basins and replace them with new inlets. Secondly,often times the plans called for inverts of new pipes tying into these existing catch basins with grades that were below the bottom catch elevation of the existing old style catch basins,thus requiring the removal of the existing CB and installation of a new deeper concrete inlet to accommodate flow elevations. Item#9—Remove Existing Concrete Extruded Curb. The existing curb and gutter line was overlaid with asphalt and thus was hidden from direct viewing.The owner assumed the majority of the curb on the project was a combined curb and gutter section in-lieu-of existing concrete extruded curb. Thus the quantities of remove existing concrete extruded curb were exceeded and the quantities of remove concrete curb and gutter were under run. Item#10—Remove Curb&Gutter. See item#9 above. Item#18—Gravel Borrow Including Haul. Quantities of gravel borrow including haul under ran the estimated amounts by 1,237.43 tons. Item#23—Ornamental Handrail. The bid proposal allowed for 300 linear feet of ornamental handrail on the project. The plans showed it to be placed on top of the rockeries constructed between 42"d and 43rd street.City standard drawing detail 332 called for ornamental handrail to be installed on both sides of the stairways to those businesses on the west side of Evergreen Way between 42"d and 43r1 street. The total length of ornamental handrail on top of rockeries between 42n1 and 43`d Street is 290 linear feet. The total linear feet of handrail on both sides of these stairways are 184 linear feet. In addition to the above-mentioned quantities,approximately 160 linear feet of ornamental handrail will be installed on the top of the rockery in front of the First Covenant Church and approximately 165 linear feet of ornamental handrail will be installed on top of the CMU block wall between Evergreen Way and Rucker Avenue,north of 44'"Street. These additional areas required either ornamental handrail or fencing to be installed on them per City of Everett standard drawings for safety reasons. Item#24—Remove& Replace Existing Cement Concrete Steps. The plans showed conceptually where stairways were to be installed on the project. No elevation differences,(between the top tread and bottom tread of these stairway areas),were shown on the plans in order to determine the approximate length of stairway which may be required to achieve the finished elevation change. The stairways were built to accommodate the existing conditions in the field. The quantities allowed for in the bid proposal were exceeded. Item#25—Shoring or Extra Excavation,CL A. This bid item is being deleted as a result of the redesign of the soil nail structural earth wall. Item#26—Crushed Surfacing Top Course. The estimated tons of crushed surfacing top course were exceeded from what was allowed in the original bid proposal do to modifications required in the curb and gutter grades,do to additional cement concrete sidewalk and cement concrete driveway areas that were installed,do to additional areas that were prepared for asphalt concrete pavement class B and do to the modifications required by the structural wall redesign. Item#27—Asphalt Treated Base. Additional areas were paved above what was reflected in the original design plans. Item#29—Asphalt Concrete Pavement,Class B. Additional areas were paved above what was shown in the originally plans. Exhibit A 15 Page 6 of 11