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HomeMy WebLinkAboutMINI U STORAGE PUD - Filed GC-GENERAL CORRESPONDENCE - 2004-08-17J T'..rme-< February 23, 1984 Bonnie Tripoli City Planning Department City of Fort Collins 300 LaPorte Avenue Fort Collins, Colorado 80521 Dear Bonnie, Concerning the Min-U-Storage P.U.D. on Mason Street/Kensington Drive we are requesting variances to the 200 ft. centerline to centerline offset requirement for the access point to this project. Being a private drive access this project will only contribute between 10-20 trips per day onto Kensington Drive. The Superior Datsun access is also a private drive. Maintaining a 200' separation between these private drives forces this project's access to less than 150` from Mason which is an arterial street. And main- taining a 200' separation from Mason Street is impossible due to _he lack of property frontage on Kensington. Thus, considering _rips per day and the private drive nature of this access, we feel the 150' separation from Mason and the 180' separation from Superior Datsun is totally adequate. Thank you for your consideration of this matter. Sincerely, Richard B. Brown � �' cc.- Bob Bradley, C.J. Bonner Corp. April 9, 1984 Project No.: 206-15 V#C&&J 4pvl Mr. Phil Waite City of Fort Collins Storm Drainage Department P.O. Box 580 Fort Collins, Co. 80522 Dear Phil: In regards to the drainage outlet for Mini-U Storage on McClelland Drive, you have mentioned several times that the existing 15 inch storm sewer is overloaded. I have recently visited the site to inspect the limits of the pipe network and the basin limits. What I found leads me to conclude that the 15 inch storm sewer has adequate reserve capacity to accept the discharge from the storage facility. Along the west boundary of Fossil Creek Commercial Plaza I observed that there is no hydraulic connection between and the subdivision west of the railroad. The subdivision detention pond discharges directly into the New Mercer Canal. New Mercer then delivers the flow directly to Mail Creek. Only a small area of the Target complex discharges to the 15 inch RCP. Over two thirds of the Target site is delivered to the lateral 42 feet from the 36 inch interceptor. (See sketch.) The pipe in this area is an 18 inch RCP. The Target area that does discharge directly to the 15 inch RCP is designed to detain water up to four feet above the catch basins. The catchment area of the 15 inch storm sewer includes the following three areas: The Mini-U Storage site with a release of 0.9. Basin C, on the Target Site Development Plan, with an area of two 303/226-3852 • 2625 Redwing Road • Drake Executive Plaza, Suite 110 • Fort Collins, Colorado 80526 acres. The lots west of McClelland Drive from sta 0+00 to 10+00 with an area of eight and one-half acres. Assuming a 10 minute historic time of concentration and a historic C of 0.20 the 'maximum allowable discharge is 0.5 cfs/acre. Applying this release to Basin C and the westerly lots the total flow in the 15 inch RCP would be 6.1 cfs. The critical run of 15 inch storm sewer has a 1.7 foot drop in 190 feet. This is equal to the hydraulic loss of 6.1 cfs in a 15 inch pipe. In the existing storm sewer lateral can deliver the controlled release from Mini-U Storage. You had two other comments about the drainage plan. The first dealt with freeboard. We provide 6 inches of freeboard on the site. To do this requires water surface to spread over 80% of the drive area. To increase the freeboard would require an increase in the relative height of the storage units above the drive. In the developers opinion this seriously hampers the utility of the units. Very little vehicular traffic will occur even on dry days. So vehicle spray is not a concern. You also expressed concern over the effect of ponding in the Target lot on the Mini-U Storage drainage system. The Target water surface is called out as 33.5; the storage site at 36.0. The surcharge will have little effect on the storage site. Respectfully, ENGINEERING PROFESSIONALS, INC. Wm. H. (Bill) Blackwell, P.E. WHB/psm T_ YI oao �1.,0.s;� 51c�c"tcL. � ts" CmticcTo� iFo�rf'(,` a& N 1 CA roR -v c�o pc'� 10�� BCD L t_. r-_ C4 F- CITY OF FORT COLLINS rN INEEEnv❑ �EwicES October 29, 1984 C.J. Bonner Corporation Randy Jacobson 18552 McCarthy Boulevard, Suite 495 Ervin, California 92715 Re: Mini-U-Store It P.U.D. Dear Sir: The asphalt pavement installed by Kehn Construction Company on Mason and Kensington Streets has been inspected and initially accepted by the City of Fort Collins pending the normal one-year contractor's warranty period. Please be advised that this acceptance does not relieve the developer of his obligation to clean debris or repair any damage that might occur as a result of future construction associated with this development. Sincerely, _ David Stringer Chief Construction Inspector r.l IINf f Pll ! �VICI S ',rJ' L n- iC..�. 'J Bnr SE'J f crt Collins, C:olur.i to d"F)P� I P,