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DANE COUNTY LAND CONSERVATION i 6082243745 08/05/98 20:12 5 :01/03 NO:732 DANE COUNTY y LAND CONSERVATION DEPARTMENT �+ �f _�- `C FEN OAK RESOURCE CENTER 0'' ,'' v- 1 Fen Oak Ct.,Rm.208,Madison,Wisconsin 53718-8812 PH:6081224-3730•FAX:608/224-3745 DATE: August 6. 1998 TO: Jim Gregorius Zoning A iministrator FROM: Aicardo k aa, Ph.D dr. Urban Conservationist re a w.-- r RE: yAJIAR 1 MAT LS.ECP 3-407 COTTAGE GROVE.TN7 RILE. SECTIO1Nt 33 The submitted erosion cc ntrol plan meets the needs of the site with the following additions: 1. Installation of an entrance tracking pad 20' x 150' x 12' of 6" clear stone to prevent tracking onto the public highway. The tracking shall be maintained at all times. Sediment reaching the public roadway shall be removed by street cleaning(not flushing) at the end of each workday ix-more frequently, if necessary. 2. Within 14 days af.er the beginning grading for the access road and ditches, an erosion control mat shall 1 H installed to a height of 1 foot above the£towline. The seed in the di aches shall be applied 506/0 under the erosion mat. 3. A sediment basin ;hall be constructed prior to any grading activity. The sediment basin is required to comply with erosion control ordinance to reduce sediment to 7.5 tons/acre. Three feet of permanent pool is required below the dewatering orifice to store sediment during the life of t le project. The erosion contn)1 plan requires that the outside of the containment berm around the sediment basin be completed in four days from start of initial grading to application of the polymer mulct The berm around i he basin requires a combination of polymer and mulch treatment to reduce sediment to the county standards. The polymer shall be applied at a rate of 5 lbs. per acre. The mul:h shall be applied at a rate of 750 lbs. per acre. The outlet of the s ediment basin needs to be protected with I)so rip-rap to reduce flow velocities and stab line the outlet.