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d. Grading. <br />c. Acceptable ground cover materials include sod, mulch, and other <br />natural ground cover. Landscaping rock and plastic <br />underlayment is not allowed. <br />d. All parking lot planting areas shall include underground <br />irrigation systems. <br />5. Bufferyards. Bufferyards are intended to provide additional screening of <br />businesses that are adjacent to residential areas. The following table <br />details the width of the bufferyard along the common adjacent property <br />line. An additional increase of landscape plantings would be required in <br />the bufferyard. That increase is expressed in the table below as a <br />percentage of the total required site landscaping in the setback area. <br />-a :) <br />N 5 , <br />o ru <br />. 0 <br />o - <br />Existing Adjacent Development <br />E -2 <br />Bufferyard <br />width <br />% Increase <br />in plantings <br />required <br />R -1 <br />60 feet <br />30% <br />R -2 <br />60 feet <br />30% <br />R -3 <br />60 feet <br />. 30% <br />B -1 <br />35 feet <br />20% <br />B -2 <br />35 feet <br />20% <br />1. Final slope grades shall not exceed 3.5:1 unless terracing of <br />retaining walls is approved. <br />2. Berming for parking lots and open space areas shall not exceed <br />3:1. <br />e. Off - Street Loading: All off - street loading dock/berth areas shall be a <br />minimum of 50 feet in length and there shall be at least one dock/berth <br />for the first 10,000 square feet of floor area and one additional <br />berth/dock for each additional 25,000 square feet of floor area. <br />Subd. 6. Architectural Standards <br />a. All exterior wall finishes on any building shall be: <br />1. Face brick; <br />2. Stucco; <br />—255— <br />