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HomeMy WebLinkAboutROBERTO'S BURRITOS EXPANSION PUD - PRELIMINARY & FINAL - 35-95 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE RELATED DOCUMENTAugust 17, 1995 Mr. Glen Schlueter Stormwater Utility City of Fort Collins P.O. Box 580 Fort Collins, CO 80522 Dear Mr. Schlueter: STEWART946SSOCIATES Consulting Engineers and Surveyors This is regarding the drainage for a proposed addition onto the Roberto's Burritos restaurant at 1201/z West Laurel Street. The existing restaurant is located at the intersection of two alleys in Block 116, Harrison's Addition. The North end of the lot has an existing gravel parking area which will remain but will have a second story addition constructed which will increase the impervious surface on the lot by 672 square feet. The runoff from the proposed increased hard surface will enter the East-West alley from two downspouts on the North end of the addition. The runoff will flow Easterly to the intersection of the alleys and then Northerly in the North -South alley to Myrtle Street and then Easterly to an inlet at the comer of Myrtle Street and College Avenue. The South 230 feet of Block 116 is approximately 98% hard surfaced. The 672 square feet of increased hard surface is only 0.7% increase. Due to the minimal increase in runoff and the ability for the runoff to flow in the inverted crown of the paved alley, it is requested that no onsite detention be required. The minimal increase in runoff does not appear to cause any adverse effect on the drainage pattern in the block. The enclosed plat of the area shows existing flow line elevation of the alleys. If you have any questions regarding this proposal, please call. Sincerely, aau� ��Ct.(itf � •••••• (jk5 Richard A. Rutherford, P.E. &Z.S.. President (0 2 8 J �r•rnrrFrAN enclosure James H. Stewart and Associates, Inc. 103 S. Meldrum Street P.O. Box 429 Ft. Collins, CO 80522 303/482-9331 Fax 303/482-9382