11/29/2006 Env Bd Packet - Laserfiche WebLink

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• • (os _S Environmental Memo To: Paul Bengtson From: Marty Asleson Date: August 3, 2006 Re: August 2 Environmental Board Recommendations The following recommendations were made concerning Golden Acre: Although the site is not large enough for the RCWD to review, recommend following standard guidelines for addition of impervious. That is an infiltration area must be provided to infiltrate the impervious area from the Mpls -St. Paul median storm (.34 inches) in 72 hours. This area could be in the form of a rain garden between the 4 houses with as much impervious area as possible directed to it. The infiltration area must be protected from compaction before construction begins. The grading plan shows the surface water flowing to the neighbor lot. The grading plan should be changed to reflect on site storage /infiltration of water. The infiltration area should be in the form of a rain garden and the design approved by the City A SWPPP (Storm Water Pollution Prevention Plan) and a MPCA permit are required for this project. The SWPPP must be submitted to the City for approval before any soil disturbance occurs, as well as the MPCA permit. The SWPPP must be located on site (Preferably a mail box) with weekly and post rain fall event inspection reports. The developer did submit an erosion control plan (Attachment 4). The erosion plan should be made more comprehensive to address pollution issues such as concrete truck cleaning and litter containment. The plan needs to show a concrete truck wash site that is protected by containment barriers. All wash out must be removed from the site after construction. The plan signature is the responsible person that will inspect and correct deficiencies. The name and 24 hour phone number of this person must be added to the plan. Location of the required rock entrance must be shown on the plan. • Page 1