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5/21/97 <br /> Doug & Marge Williams KEITH WATERS <br /> 1020 Tonkawa Rd. &ASSOCIATES,Inc. <br /> Orono, MN 55364 DESIGNERS&BUILDERS <br /> 10340 Viking Drive <br /> Ref: Driveway and Retaining Wall at Edmunds Property Line Sate 110 <br /> Eden Prairie <br /> Dear Doug & Marge: MN 55344 <br /> 612)942-1060 <br /> fax(612)942-1058 <br /> You are planning to landscape your yard including the strip on the south License Number-000 1508 <br /> side of your home. When you called, you indicated that you are in the <br /> process of obtaining designs and quotes from landscape companies. <br /> I want to inject a note of caution here. The space between your home and <br /> Edmunds boulder wall is designed and engineered as a drainage swale to <br /> channel huge amounts of runoff from your front yard and driveway to the <br /> lake. It is designed in the following layers: the ground is shaped into a 'V' <br /> shape to channel the water away from the wall and your home. A heavy <br /> fabric is placed over the ground. This fabric carries the water and prevents <br /> the erosion of the soil below. The fabric continues behind the boulder wall and <br /> prevents water from washing the soil out between the boulders and undermining the <br /> wall. The large stones, known as "rip-rap", are placed over the fabric. They slow <br /> waterflow, protect the fabric from deteriorating from sunlight, and most importantly <br /> hold the fabric in place. <br /> The point of this discussion is that no holes should be cut into the fabric, nor should <br /> the drainage swale be altered. If you wish to change the color of the stones, you <br /> should cover the existing "rip-rap"with different color stone. Huge amounts of water <br /> pour through this channel. If the water gets into holes cut for a shrub or tree, it can <br /> washout the shrub, undermine the fabric, and ultimately undermine the wall and the <br /> earth along your property line. <br /> You should view this area as a functional area first and then a landscape design <br /> area. You should pass this data on to any landscape contractor you may use and <br /> have the City of Orono review and approve any landscape plans. <br /> You wanted us to contribute to changing the rock color in this area. We will <br /> contribute up to $200.00 worth of rock to cover the existing "rip-rap". <br /> I have attached notes from Bob Edmunds of conversations he has had with the Wall <br /> Engineer, Wall Contractor and Landscape Architect regarding this issue. Also <br />