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V. SUMMATION <br />• The proposed Loma Prospect has been analyzed under a major storm <br />with a return period of 10 years. Runoff will be conveyed through the <br />culverts and into the historic tributaries. Culverts have been sized <br />accordingly for the flow from each watershed to prevent damage to the <br />Loma access road. These drainage calculations confirm that the existing <br />culverts are adequate to convey the flow under the access road. The <br />one exception Is the 36"D culvert for watersheds F and X. A 42"D C.M.P. <br />would control the flow better as shown in the drainage calculations. Yet <br />a 36"D culvert could adequately convey the flow if the slope of the cul- <br />vert is flat enough. This slope should be 0.6$ or less and !s shown In <br />a latter part of the drainage calculations. If the slope is greater than <br />0.5$, then a 42"D C.M.P. will be required to convey the flow generated <br />from watersheds F and X. <br />• <br />• <br />S - <br />