Laserfiche WebLink
Ms. Katie Larsen <br />July 7, 2016 <br />Page 4 <br /> <br /> <br /> S:\Community Development\Projects\Planning Cases\St. Clair Estates\Staff Reports\20160713 PZ (continued PH)\2 20160707 Engineering Review No 2 St Clair <br />SANITARY SEWER SYSTEM <br /> <br />1. The sanitary sewer is less than 7 feet deep at SAN MH 8 and the City’s standard is 7.5 <br />feet deep. The applicant shall provide justification for not meeting standard. Associated <br />watermain lowering shall be shown on the plans. Once additional information is <br />provided we will review for conformance. <br /> <br />2. Sanitary sewer services need to be shown on the plans. Sanitary sewer services for Lots <br />3-7 Block 1 are of concern due to excessive length. These may require cleanouts or <br />extending the main further into the loop providing more standard lengths. <br /> <br />STORM SEWER SYSTEM <br /> <br />1. Please provide storm sewer calculations and drainage area maps with your construction <br />plan submittal to verify the size of pipes and spacing of catch basins. <br /> <br />2. Several storm sewer pipe lengths do not currently meet the minimum 3 fps requirement. <br />(CBMH 301-FES 300; FES 108-CBMH 107; FES 104-CBMH 103; CB 113-CBMH 112; <br />CBMH 112-(ST/CB)MH 111; CB 204-(CB)MH 205; (CB)MH 205-CBMH 202; <br />(ST/CB)MH 201-FES 200. <br /> <br />3. The storm sewer pipe between CBMH 301 and FES 300 shall be adjusted such that future <br />maintenance would not encroach upon the adjacent private property. <br /> <br />4. Several structures are shown at or below minimum cover (CBMH 101; CBMH 114; <br />CBMH 115; CB 204; CBMH 301; CBMH 302). Verify with the final construction plan <br />submittal that all storm sewer pipe has a minimum 2 feet cover which includes the pipe <br />thickness. <br /> <br />TRANSPORTATION <br /> <br />1. A Traffic Study was prepared by SRF Consulting Group, dated May 9, 2016 and revised <br />on June 23, 2016 addressing following comments: <br /> <br />• The analysis documented an issue with the backup of traffic southbound on <br />Hodgson Road turning left onto Birch Street. It is indicated that this backup is <br />more than 400 feet which will impact the southbound through traffic creating a <br />potential safety concern with stopped traffic in the through lane. The Revised <br />Study addressed the existing crash data. The Revised Study also discussed what <br />effect signal timing improvements would have on intersection operations now and <br />in the future with the proposed site traffic. The City should consider working <br />with the applicant and Anoka County to review the options for the sign timing of <br />this signal. <br />• In the “Neighborhood Impacts” section the traffic volume increases were updated <br />using the actual estimates. The traffic volume figures were updated to show actual <br />estimates; however, the anticipated change in the AM and PM peak hour volumes <br />was not provided. This shall be included.