Agenda - Council - 04/14/1999 - Laserfiche WebLink

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iI I I I I I I I I I I I I I I I I I I Northern Natural Gas Company, Elk River Loop '99 Project City of Andover Special U~e Permit Application ENVIRONMENTAL SUMMARY Project Description Northem Natural Gas Company (Northern) is planning to construct the Elk River Loop '99 Project, a new 16-inch-outside-diameter natural gas pipeline in Anoka and Sherburne counties. Approximately 14.7 miles of pipeline will be constructed adjaqent to Northern's existing Elk River branchline within a 75-foot-wide temporary construction right-of-way. The Elk River Loop '99 project will supplement Northem's existing 6- and 8-inch pipeline to meet an increased market demand presently served by the Elk River Branchline. The Elk River Loop '99 project will be constructed adjacent to Northern's existing pipeline facilities for its entire length. Within the City. of Andover, the adjacent portion of the existing Elk River Branchline consists of approximately 1¼ miles of 6-inch and five miles of 8-inch diameter .pipe. Typically, the new pipeline will be offset 20 feet from the existing Elk River Branchline. "Additional workspace will be necessary at stream, ditch, and road crossings for use as staging areas or for temporary spoil storage. Northern will work With landowners to address construction-related concerns. The proposed route begin,s in Andover in NW 1/, of Section 25 (T32N, R24W), near Prairie Road and 148~h Lane, The rc.~,e continues to the northwest paralleling Northern's existing pipeline and leaves Andover at the Rum River to terminate at an existing meter station, near Twin Lakes Road NW and 181~1 Avenue NW in the City of Elk River. A route map has been enclosed to illustrate the location of the proposed route including the area crossed in the City of Andover. Conventional pipeline cOnstruction methods will be used to install the proposed pipeline. A cross section drawing of a typical construction right-of-way for the 'project is enclosed. The bottom of the trench is typically two to three feet wide and deep enough to provide for a minimum of four feet of cover, unless otherwise directed by land-use permits, local pipeline ordinances or safety requirements. In accordance with the Natural Gas Safety Act of 1968, Northern's pipeline projects are designed, constructed, operated and maintained to meet Or exceed Federal pipeline safety standards established by the U.S. Department of Transportation in 49 CFR Part 192, (Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards). These regulations specify safety and design requirements, including allowable operating pressures, as well as construction, installation and maintenance requirements. Page 1