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Molin Concrete <br />page 14 <br />Discussion of Conditions Added by P & Z: The first additional condition <br />recommended by P & Z regarding hours of operation is intended to reduce the frequency <br />of noise complaints. This is a good intention. However, staff is concerned about the <br />meaning of the condition, how it will be interpreted by different parties, and the City's <br />ability to enforce it. <br />Molin did not agree not to operate outside of the listed hours, and cannot avoid operating <br />outside of those hours. Ultimately, the City's ability to enforce the conditions of the <br />conditional use and interim use permits rests on the threat of revoking the permits. <br />"General hours of operation" and "extraordinary" are undefined terms. Neighborhood <br />complaints will not be a legally supportable basis for revoking Molin's permit to operate <br />the concrete plant. <br />Because the condition is too ambiguous and therefore unenforceable, staff does not <br />recommend including this condition in the approval. <br />The second additional condition would require trees planted on both sides of the berm. <br />This is a variation of the original 1997 condition, which Molin has requested be deleted. <br />The purpose of planting trees is to provide screening. <br />The existing berm is 8-10 feet high. This is as tall a screening measure as the City would <br />require. Existing trees along the property line now create a very thick screen except <br />toward the eastern portion of the site. In addition, there is a safety concern with trees in <br />the approach zone of the Lino Air Park. <br />It is possible to plant trees that will not exceed the approach zone height restriction. The <br />shorter trees could be planted on the western portion of the site, with taller trees to the <br />east, farther from the air park. <br />Trees would best be planted close to the property line rather than on the berm itself. The <br />chances are not good that trees will survive on the berm. In addition, the closer to the <br />property line, the better the screening effect of the trees. <br />If the City requires trees to be planted, staff recommends the following: <br />14.b. A double row of staggered conifers shall be planted along the northern <br />Molin property line. Trees in each row shall be planted 36 feet apart to achieve <br />the effect of a tree every 18 feet when viewed horizontally. (The wetland/pond <br />may necessitate some variation to that pattern, however.) No trees are required to <br />be planted along the western 230 feet. A conifer species with a maximum height <br />of 30 feet shall be planted along the next 420 feet moving east. White pines shall <br />be planted along the eastern 640 feet. <br />