1997-11-12 - CC Packet - (Admin.)

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=0'd 1H101 Howard R, Green Company [9Y;l6TtYf WYII4YU9LY CONSULTING ENGINEERS F;rmerly MSA November6, 1997 Ct nsulSng Eng7reers File. 260096M Mr. Jim March City Administrator City of Centerville 1880 Main Street Centerville, MN 55038 RE. SENIOR HOUSING FINAL GRADING PLAN REVIEW Dear Mr. March: We received the revised grading plan for the above- referenced project on November 3. ' 397. A change that has been made to the plan includes grading a small depression off the nortl,vvest corner of the building to collect storm water. If this depression is constructed to plan, the watermain that has already been installed will not have adequate earth cover. We there fore recommend the installation of insulation below this low area and storm sewer to protect against freezing. We also recommend minor grading modifications here to provide as much protection to the watermain as possible. We received a call from Frana and Sons, Inc., regarding what type of curb and gutter is -aqu?red for the parking area. 8612 concrete curb and gutter is acceptable at this location. We offer the following minor comments on the plan: • The slope is incorrect for the 12" RCP just south of the parking area • The small berm northwest of the driveway apron should be verified in the field to direa stormwater over the emergency overflow and not onto the properties along Heritage or west along the driveway. • Emergency overflow should also be constructed between the low areas around the south end of the building. We will be in attendance at the November 12th City Council meeting. We can answer ar.y questions about the grading plan at that time. Sincerely, H ward R. Green Company Da Y r9 Project Manager DEMtw cc: Mr. Paul Palzer, Centerville Public Works Mr. Mike 5t. Martin, Loucks and Associates Mr. Tm Dillon, Dunbar Development Ms. Bekah Padilla, MHWB 0 TR0R26 96mH146 -061 r. iov.duc D3'79'd Tc tT �.- 66T- 90-60H