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owarc August 13, 2003 File: 821110J -0240 R, Green Co Honorable Mayor and City Council City of Little Canada 515 Little Canada Road East Little Canada, MN 55117 -1633 RE: HAMEL COURT CITY OF LITTLE CANADA Dear Mayor and Council Members: ' npany We received a revised submittal package for the proposed Hamel Court subdivision located north of Twin Lakes Road on August 12, 2003 from Plowe Engineering, Inc. Based upon our review and conversations with the Public Works Director, we would offer the following comments: 1. The proposed grading should be revised at the south end of the development east of Twin Lake Road to prevent runoff onto the adjacent property. 2. The storm water pond located west of Hamel Court should be constructed outside the street right -of -way. In addition, 4:1 slopes should be used on the pond side slopes. 3. Watermain should be installed through the plat from Twin Lakes Blvd. to Twin Lakes Road. Fire Hydrants and water services should also be installed. The watermain will need to be filled with chlorinated water and pressure tested prior to approval, however no hook -up can be made until watermain is extended into the area. 4. Top of curb elevations should be shown at all radius points and around the cul -de -sac to verify adequate drainage. 5. A typical section for the street should be shown on the plan to ensure adequate design strength. 6. The City is currently investigating the possibility of providing the entire Twin Lake area with storm sewer; therefore it may be possible to eliminate the on -site storm water ponds and discharge to Twin Lake. However, no answer has been received from Mn /DOT in regards to discharging to the 694 interstate ditch. In discussions with the developer, he would like to complete the project using the pond due to the financial burden of delaying the project until an answer is received. 7. The Emergency Overflow (EOF) outlets should be shown for the both ponds. 8. Drainage calculations should be submitted for review and approval. C: \WINDOWS \Temporary Internet Files \OLKF1A3 \Ltr 081303 City Council,rev.doc -2-