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10062 Flanders Court NE, Blaine, MN 55449 – Ph: (763) 780-0450 – Fax: (763) 780-0452 <br /> <br />During these rain events the storm water did pond into the driveway apron, but did not extend <br />beyond midway of the driveway towards the house. These rain events were reviewed after <br />removal of the screen and the storm pipe appeared to be functioning adequately. <br /> <br />The property at 1776 Venus Avenue is at a low point in the road in a manner that existed both <br />before and after construction. However, it may be beneficial to provide a secondary route for <br />the storm water in the event that the inlet at the low point becomes plugged and to provide <br />additional capacity beyond the typical standard. <br /> <br />We have reviewed two options for modifications at this location. The first is the addition of an <br />inlet to the west of the driveway to increase the inlet capacity and to provide a back -up in case <br />one inlet becomes plugged with debris. An exhibit is attached that details the addition of the <br />inlet. The second modification is to create an emergency overflow between the side yard lot line <br />of 1776 and 1768 Venus Avenue. In the event that a very large rain occurs and the storm <br />sewer system is over capacity this would provide a route for the storm water to be directed to <br />away from the house and garage of 1776 Venus Avenue. <br /> <br />We have spoken to the resident at 1776 Venus Avenue and they are open to allowing both <br />modifications to occur. We also requested quotes from four contractors and four residential <br />landscapers. We received the following quotes: <br /> <br /> Contractor CB Addition Overflow Swale <br /> Quinzon Outdoor $1,475.00 <br />C.W. Houle, Inc. $8,000.00 $6,500.00 <br /> Valley Rich, Inc. $11,100.00 $9,200.00 <br /> <br />While an additional storm inlet would provide additional capacity it would still be limited by the <br />inlet grate, which could be reduced due to debris. The addition of the overflow swale would <br />provide the most protection, because it does not rely on the storm sewer system capacity but <br />rather provides an overland route. <br /> <br />If you have any questions, please contact me at 763/780-0450 Ext. 2. <br />