7.9. SR 04-21-1997 - Laserfiche WebLink

Home Browse Search

CON~ILTING ENGINE 1326 Energy Park Drive St. Paul, MN 55108 612-644-4389 1-800-888-2923 Fax: 612-644-9446 April 14, 1997 File: 230-354-11 Mr. Steve Ach City Planner City of Elk River 13065 Orono Parkway P.O. Box 490 Elk River, MN 55330-0490 OAK RUN ADDITION FINAL PLAT AND PLAN REVIEW Dear Mr. Ach: CIVIL ENGINEERING ENVIRONMENTAL MUNIC!PAL qNJNC~ SOLID WASTE STRUCTURAL SURVEYING TRAFFIC TRANSPORTATION ELECTRICAL/MECHANICAL ENGINEERING HYAC POWER DISTRIBUTION SCADA SYSTEM CONTROLS As you requested, we have reviewed the final plat for the Oak Run Addition. Along with that, we have also reviewed the plan sheet for the street construction associated with that development. Based on our review, we would offer the following comments: The final plat should label the drainage and utility easement along the north side of the plat boundary as ten feet wide. It is shown as ten feet wide but the detail would indicate that it is only five feet wide, unless specifically noted. Also, the easement for drainage purposes in the southwest corner of the plat at the intersection of 210~h Avenue and Ogden Street should be labeled as a drainage and utility easement. The temporary easement to build the cul-de-sac at the east end of 210th Avenue should be prepared by the Developer's surveyor and submitted as part of the final package. This easement can then be recorded at the same time as the final plat. There is a low point in 210th Avenue, approximately 185 feet east of the Ogden Street intersection. At that point, there are two catch basins and a flared end directing the runoff to the pond in the southwest comer of the plat. The grading plan indicates there will be a relatively steep side slope on the north side of 210th Avenue near this flared end section. We would suggest that the flared end section be angled to the northwest out of manhole No. 101 and should be extended slightly further to provide for a reasonable slope on the boulevard area behind the curb. ~FFICES IN: .,iINNEAPOLIS PRIOR LAKE SI. PAUL WASECA There is approximately 300 feet of street that will drain to the temporary cul-de- sac at the east end. It is unclear where this drainage will go from this point. We would suggest that there be a small pond constructed in the half of right-of-way that was dedicated on the east side of the plat. The water could then be directed off the cul-de-sac and into this small ponding area where sediment and rate control could be accomplished. An Equal Opportunity Employer