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F.C. CASE # q REQUEST FOR CHANGE ORDER TO IMPROVEMENT PROJECT 00-21,143m) AVENUE NW STREET AND UTILITY CONSTRUCTION By: Brian E. Olson, City Engineer Background: The construction of 143rd Avenue NW between Jaspar Street NW and County Road 116 started early this Spring and will continue and be completed by the end of the summer. During the construction of the facilities that would enable development to occur in Gateway Industrial Park No. 5, we constructed a regional pond for the development of the industrial park to occur. Due to the substantial amount of rain that we have gotten this summer, the Contractor has requested a change order to install a wood fiber blanket embedded with a seed mixture to control erosion and establish turf in the pond. The original Contract called for the area to be seeded. Although seeding does allow for turf establishment, it does take awhile to act as an erosion inhibitor. The pond Could be completely sodded, which would result in an almost immediate erosion inhibitor, but would be an increase in over $25,000 of additional cost to the project. The original estimate prepared for the change order for the wood fiber blanket came to almost $21,000. In discussions with the Contractor, Staff has asked that the price be reduced because of the increase in quantities and increased effectiveness for maintenance thereby easing the burdens that the Contractor would be responsible for erosion control. A letter from Erickson Construction, Inc. explaining the proposal will be distributed at the Finance Committee. We are also asking to substitute the wood fiber blanket for the boulevard sod that was anticipated in areas where there is not an established business. This will be a cost savings to the project and can eliminate the need for extensive care that sometimes are required for sodded areas. Recommendation: It is staff's recommendation to enter into a Change Order to authorize Erickson Construction to install wood fiber blanket on the ponding and boulevard areas in the project to help establish the turf sooner and minimize the erosion potential of the exposed soil. Council Action: Motion to authorize Erickson Construction to install wood fiber blanket on the ponding and boulevard areas in the project to help establish the turf sooner and minimize the erosion potential of the exposed soil. Reviewed by: City Administrator Director of Public Works Finance Officer FC: 06/26/01