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• • • Minnesota Department of Natural Resources 1200 Warner Road St. Paul, Minnesota 55106 651:772.7900 December I8, 2003 Michael Grochala Community Development Director City of Lino Lakes 600 Town Center Parkway Lino Lakes, MN 55014 RE: Legacy at Woods Edge Environmental Assessment Worksheet (EAW) Dear Mr. Grochala: The Department of Natural Resources (DNR) has reviewed the EAW for the proposed Legacy at Woods Edge Development in the City of Lino Lakes. In general, the EAW appears to be complete and accurate. We offer the following comments for your consideration. Cover Types (Item No. 10) Table 1 shows the conversion of 4,6 acres of wooded/forest cover. This may result in the removal of a significant amount of wood from the Site Depending on its condition, this wood may be used as landscaping material, firewood, or as a replacement for coal in the production of energy. The developer should contact Jean Moodie, Regional Forest Utilization and Marketing Specialist (651772- 7567), for advice on this subject. Water Ouality: Surface Water Runoff (Item No 17) The project proposer has done a good job of incorporating stormwater infiltration technologies into the plans for this site The EAW states that the project will result in a zero percent post - development increase in runoff rates. We recommend that this control be coupled with a zero percent increase in runoff volumes. Improvement in volume control would be desirable, especially considering that the project will result in a 43 percent increase in impervious cover in the shoreland district of Marshan Lake. Item No. 17b states that treated stormwater either will be infiltrated or discharged to wetlands. The EAW does not state the change in stormwater runoff volume from the site. This information would be useful and we recommend that it be included in the EAW. Thank you for the opportunity to review this project and the EAW. We look forward to receiving your record of decision and responses to comments at the conclusion of environmental review. Minnesota Rules part 4410.1700, subparts 4 and 5, require you to send us your Record of Decision within five days of deciding on this action. If you have any questions about these comments, please call Wayne Barstad, the Regional Environmental Assessment Ecologist, at 651- 772 -7940. An Equal Opportunity Employer Who Values Diversity DNR Information: 651.296-6157 1.888 -648 -6367 TTY: 851.296 -5484 1.800- 657.3929 1 2 RESPONSE 1 The City will evaluate alternative uses of wood removed from the site and will contact the Regional Forest Utilization and Marketing Specialist for further assistance. 2 The storm water management plan for the proposed development incorporates wet sediment basins and infiltration systems (ponds /basins and underground chambers) to treat and store runoff, which results in a system that exceeds The Rice Creek Watershed and City storm water requirements for treatment and storage. However, as is typically the case with most developments, the post - development conditions will result in an overall increase of runoff volume. This increase in runoff volume is likely to only occur in the George Watch Lake Watershed because the storm water management plan establishes a drainage system that routes nearly all runoff from the site to the east and into the George Watch Lake Watershed. Runoff from impervious surfaces that are within the Marshan Lake Shoreland District is directed to a series of infiltration basins /ponds that eventually outlets to a wetland, which is tributary to another extensive wetland complex located in the George Watch Lake watershed. Therefore, the increase in runoff volume from the site will have no net effect on the Marshan Lake Watershed and Shoreland District.