Laserfiche WebLink
. ,r;;0���0�` : <br /> �; �� � ��, Bonestroo <br /> . � ;�� ����: � <br /> :<< � � � <br /> ; <br /> �, ,s,:,-��� G�„ <br /> `\\��sx�°`'��, <br /> November 13, 2009 <br /> David Schell <br /> 46 Mounds Boulevard <br /> St. Paul MN 55106 <br /> RE: Permit 2009-00249 - 2100 Shadywood Road <br /> The active summer construction season is fast drawing to a close here in the state of winter and <br /> frozen ground. As we move into a new season it is important we take the proper precautions on <br /> our active sites to help eliminate any erosion problems or added expenses that may be incurred <br /> due to winter freeze thaw events and the inevitable spring runoff. As construction continues <br /> throughout the winter in the City of Orono it is important to minimize the amount of open soil by <br /> providing temporary or permanent cover, one of the key elements in preventing soil loss. It is <br /> also required that the appropriate BMPs be maintained on-site by December 1, 2009 as follows: <br /> ■ Exposed soil areas must be stabilized with the appropriate seed mix and erosion <br /> control blanket, disc anchored mulch applied at a rate of 2 tons per acre or other <br /> effective means to control erosion. <br /> o Areas requiring stabilization will include but are not limited to small <br /> miscellaneous areas, landscaping areas, sidewalk backfill, non-active <br /> stockpiles, finished grading areas, etc. <br /> o Areas being worked after November 26th must be stabilized weekly until <br /> construction ends. <br /> o In the event that it snows and there are frozen ground conditions,mulch can <br /> be applied effectively over the snow. <br /> ■ Seeding must be completed with the appropriate seed mix as indicated below. <br /> Dormant seeding shall be done in the later fall after the soil temperature is <br /> consistently below 50 degrees Fahrenheit. Seeding done before or after the indicated <br /> seed dates may require reseeding if the seed does not take. In the event that it snows <br /> and there are frozen ground conditions, seed can be applied effectively over the snow. <br /> Fall and Dormant Seedin Dates <br /> Seed Mixture Number Fall Dormant Seedin <br /> 100 Aug. 1 —Oct. Oct. 20—Dec. 1 <br /> 1 <br /> 150, 190 July 20—Oct. Oct. 20 - Dec. 1 <br /> 20 <br /> 240,250,260,270 July 20— Oct. 20—Dec. 1 <br /> Sept. 20 <br /> 310, 325,328, 330, Sept. 20— Oct. 20—Dec. 1 <br /> 340,350 Oct. 20 <br /> ■ Rock construction entrances to access the construction site and prevent tracking <br /> sediment off site <br />