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06/13/�e12 13:25 6517775973 <br /> PC Exhibit C <br /> RE: Landscape ProjeCt for Russ Schumer June 13, 2012 <br /> 1. 1 have revlewed the landscape plan for work done at the Russ Schumer p�operty along with the <br /> technical information regarding the woven agricultural fabric utilixed under the rocked a�eas <br /> around the stairs a�d pond- 7he fab�ic itself has a water flow or perc rate of 6 gallons/min/SF. <br /> Thls far exceeds the perc rate of grass and top sofl. 7t�e fabrlc is overlain wfth clear�ock which is <br /> also more pervious than grass and top soil. It is my professional opinion that the porvsity nf the <br /> • landscaping work does not adversely impact the quality af the receiving water or the aquifer <br /> recharge. In fact, co�sidering the fert111ze�s typicallY associated with turfed areas and the <br /> potential for erosivn on the sloped areas,the reduction in the turfed areas probably improves <br /> ,. . �... °water qualfLy.----�-- .. , . - .... <br /> 2, The City of Orono may have concerns that the fabric may eventually clog and, over time, may <br /> � lose some of its porosity characteristics. The use of clear rock on top of the fabric greatly aids in <br /> reducing t�is concern. Mitigation measures short of removing the work could be ernployed to <br /> allay the City's�ancerns. These may include puncturing�he fabric at specified intervals and/or <br /> incorporating plantings in the landscaped areas to allow water to flow past the fabric. . <br /> 3, I have attached the spec sheet for the fabric to this memo. <br /> � • . <br /> Joel A.Rogers P.E. <br /> 651-341-1369 <br /> ..,�� <br />