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Members of the Orono City Council <br />2.2 November 1989 <br />Page <br />we believe that the water drainage proposal, prepared by Herb <br />Baldwin and reviewed with the City Engineer, will completely deal <br />with runoff. A line of 61'- perforated drain tile will conduct <br />water to a wet well with a perforated cover from where it will be <br />dispensed to and percolated through the 75'-250' area (see <br />exhibit A). The existing terrain along the house already drops <br />away from the lake embankment so that the proposed arrangement <br />will simply be a reinforcement of current drainage patterns. We <br />are also willing to eliminate 68 s.f. of stone steppers and 16 <br />s.f. of retaining wall to .-urther reduce the impact of water <br />runoff (see exhibit B). The retaining wall, screened by <br />plantings along the lake side, is itself an effort to manage <br />water runoff, in this case so that it does not further erode the <br />embankment, which is already slumping in spots. <br />Finally, we wish to bring to your attention the fact that <br />hardcover additions within the 0'-75' setback zone will represent <br />only a small percentage increase. (Hardcover in the 250'-500' <br />zone is only 6.3%, and in the 75'-250' zone will be only 18.3%.) <br />The following matrix represents existing and proposed changes <br />.1ithin the 0'-75' zone (see also exhibit C): <br />Existing % Proposed % Difference <br />Perk,. ,nt Structure 595 2.2 765 3.0 170 <br />Retain. q Walls/Stairs 325 1.2 421 1.6 96 <br />Paving ! 71 2,_. _ 6i1 _2.3 40 <br />TOTAL 1,491 5.7 1,797 6.9 306 <br />Unfortunately, there s virtually no existing hardcover that <br />could be removed to compensate for increases elsewhere. <br />We have worked with the Pillsburys to design an addition and <br />landscaping plan that has minimal environmental and visual impact <br />for others. That has always been their wish. We believe our <br />proposal accomplishes this while satisfying the requirements of <br />Orono's ordinances and provisions for hardship variances. We <br />look forward to further discussing the Pillsbury's request with <br />you during the November 27, 1989 meeting and answering any <br />remaining questions you may have about the project. <br />Si erely, <br />Thomas Meyer <br />encl <br />cc George and Sa1Ty Pillsbury <br />Herb Baldwin <br />U30/LI12269 r1-c <br />