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<br />, ,- <br /> . ... <br /> Mr. Brian Fritsinger <br /> . Page 2 <br /> January 23, 1997 <br /> proposed right of way. We anticipate the coordination of the necessary right-of-way acquisition <br /> prior to the bid opening in late February. 4) The sewer odor is one of the greatest concerns. <br /> Based upon further research, it appears that the flows from Bethel College are not septic upon <br /> discharge to the city's system. It does appear that the odor may arise from turbulence caused by <br /> a two foot drop in the manhole at the point in which the Bethel discharge enters the Arden Hills <br />- system. It is believed that reconstructing the manhole with a flush invert may solve the problem. <br />- However, we also recommend installing a 10 foot vent stub out of the manhole to allow future <br /> connection to a carbon filter scrubber and a blower. We do not recommend installing the <br />- scrubberlblower until it has been determined that the manhole reconstruction has not solved the <br />.. problem. Yet, if the addition of this equipment appears necessary in late 1997 or 1998, we would <br /> anticipate an installation cost of$12,000 to $15,000 and an annual operating cost of$200 to <br />- $300. If required, this installation would certainly remedy the odor problem. <br />I N. Snelling Avenue <br />- Five residents were present at the January 8 on site meeting. The bulk of the concerns were <br /> related to saving trees, which we have made every effort to accommodate in the final plans. <br /> Other concerns were parking and access during construction. <br />'. . Other Issues <br />. In conjunction with the seal coat project, we have proposed to perform maintenance on <br /> approximately 3,850 feet of the City's bike trails, as the City did last year. However, concerns <br />. have been voiced regarding the pea gravel aggregate used on the trails. Mr. Stafford and I <br /> observed a "slurry seal" operation completed in Mounds View last summer and it is proposed <br /> that this operation be used on the bike trails. The cost is approximately 66% more than the <br />. typical seal coating cost; however, it provides a longer lasting, more durable, and much more <br /> rideable (or roller blade friendly) surface for bike trials, <br />I Mr. Stafford has also indicated an interest in using this method of seal coating on one of the <br /> streets in town. This would provide a test sample for the City's analysis in the future. It is <br />. proposed that all "slurry seal" work be bid as an alternate to evaluate the actual costlbenefit of <br /> the operation. A determination of which operation to use for the maintenance improvements will <br /> be made upon receipt of bids. <br />. I will be present at the January 27,1997 city council meeting to address any further questions or <br /> concern the City Councilor Staff may have. Please feel free to contact our office with any <br />. questions you have prior to Monday's meeting. <br />I . <br />I <br />