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HomeMy WebLinkAboutFOX HILLS 2ND FILING RF SITE PLAN REVIEW - 36 93C - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT'STEWART&AS( JGATES Consulting En3ineers and Surveyors 103 S. MELDRL FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 By: Date: Client: Sheet No. of_ Project: Fox IgILLS P, U, D Zn d. Subject: t i IA' 30,o 1 G=(lib x J� {' �d,zS,� D•;'D) .. U q.n 76 Z,p X Y' GD / ISM GFJ. I 1 I pry." )0Y = D,'4S x ?,ssx i l' �.0 ' - 7-73 I C.cs. T, /Sal . br_>,�, • C I D o ilk / 2,S)c 6-4•c9 x > .. � I � I I 1 ! I r 3 X. /' - � 1 t S'O i � 1 � ( j I , I 1 � ; I STEWART&46' JCIATES Consultin3 Engineers and Surveyors By: Date: Client: Project: F- o x H, L.- L s /: U. D, l V Subject: 103 S. MELDR! FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 Sheet No. S of Agc-a,-, /0,10 jA'c, .-I. MrEgVIOv1' A er,,q i 1. 3 / Ae-, 13,1 P6 V10Lf ! A o 6, A = B L`1 Ac; 6O,y j 4 (D.Zsx'D•�G'�� _ D, 3.S I i TC. pev, Q.z0+35 y,. /-B X ;D, O G' 3 I , I Lev• Q, /o Ye . D.3.S x 3.Z x /D. O f I i i -I 17 I i � I I I I I STEWART&, SS JCIATES 10 82 9331RL -ORT gOLLINS, CO 80521 Consulting Engineers and Surveyors By: Date: Client: Sheet No. 4- of Project: - �.! ,c e r P. 0. Subject: F'x - /3, 7 Ate• Zj1i PGA!V<au-1' A eigy = �Io' 6 4-A-c• 2, 70a Pc e Vioui /I /2 t e1 3. 14 A r. 2z. 3 I C _: L0Y., o. Zz,3) �0•'Ls x'Q,777) 0 ¢Z ' ' I I I _ 13 M i I I i I j AEA Q'� y/z D 4Z1 x'`j,,� x 13,7 = l`I•S�I I i T'G vex Q/oo=1 o'•42, h 5-,9 x /3.7c.' s. I i I i i I , I I I. I i I STEWART&ASS jCIATES 10 82 933DRF�^ 4O OT COLLINS, CO 80521 Consulting Engineers and Surveyors By: 9- A Date: l2 G 7 Client: Sore i �/ , 4, Ve,J v; a Sheet No. Hof _ Project: e-s U• �. SEcn,v,p Flz4 ) Subject: 70/-,nt AE.2 vA/E- Ar,cu/_,a71tlA)r A EA /2, O A �. .TMPEev/vui A25L1 Jae aVrOVJ e A, /0 • l9 j C= (I10'A U./S/) (6.25-x 849) 0136 I ; Tf- sa o'A-- f— 8 00 =r � I ! /r ; '-17, Z. M/A,, T 441 N•, 1 i 1 pcv. Q z Y;e i I i i bBv• /oy� j D 3G x I Z,7S Xc•ICU 1 TL=ZSM/N. PSV. i�_ /00 �I•G - /.•,Z�S�X 0�,8( x -r 6s''X ..I �i•!0 = •ZS//G.F-J'. ! I I i I- ' • ��� I 1 I t 1 I 1 I I I i 1 I i 1 I 1 1 I i I I i I I i 1 j I I I Fox Hills P.M. , Second Filing Page 2 The site historically drains east onto Taft Canyon, Third Filing, and then southeasterly through what is now Tract "D" of the Replat of Taft Canyon which is the upper reach of the Burns Tributary of Fossil Creek. The developed runoff will continue the same pattern by draining to Wessex Drive which is the stub street west from Idledale Drive. There is an existing 24—inch diameter storm drain under Idledale Drive and an existing drainage swale between two lots leading to Tract "D". Taft Canyon was developed in Larimer County. If their drainage plan assumed only the historic discharge from offsite (Fox Hills P:U.D.) was entering Taft Canyon, detention could be provided on the Fox Hills P.U.D. open space. Erosion control will be an important part of the development of this project due to the steepness of the slopes between the clusters and the open space. The ravines have some existing erosion that will be reseeded after they are stabilized using geo—fabric. The cut and fill slopes that will be required for the construction of the second access drive will require stabilization with fabric and also reseeding. The Swale and berm along the east property line will trap any silt that may result during construction and keep it from entering Taft Canyon P.U.D. The runoff calculations and drainage plan are enclosed as a part of this preliminary. report. Please call if you have any questions during your review. Sincerely, ';2� a . Richard A. Rutherford, P.E. & L.S. President jrr enclosures tttt1nnn/,,. . *; 5028 • - 1111111110 r STEWART&&SSOCIATES Consulting Engineers and Surveyors December 6, 1993 Mr. Glen Schlueter Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, Colorado 80522 Dear Glen: The following is the preliminary storm drainage report for Fox Hills P.U.D., Second Filing. The site contains 33.17 acres and is located in the Fossil Creek Drainage Basin. The P.U.D. is situate in the East z of the Southwest a of Section 33, Township 7 North, Range 69 West of the 6th P.M., Larimer County, Colorado The P.U.D. is bounded on the north by County Road 38—E, on the east by Taft Canyon Third Filing, on the south by Westridge Estates, and on the west by Fox Hills P.U.D., which is a Larimer County planned unit development, and by the partially constructed Red Fox Road. The Fox Hills P.U.D., .Second Filing, has 33 proposed single—family detached lots clustered around four cul—de—sacs on the relatively flat plateau overlooking Taft Canyon P.U.D. The lots vary in size from approximately 8,000 square feet to 17,000 square feet. The lots and streets contain approximately 11.1 acres, and the balance of 22.1 acres will be common open space. Most of the open space is fairly steep and has native ground cover and bushes. The site slopes from west to east with the west 150 feet to 300 feet, which contains the proposed clustered lots, having slopes that vary between 5% and 7%. The open space slopes vary between 5% and 25%. The steep slopes and the ravines will not be disturbed except during the construction of the second point of access road and the proposed sanitary sewer outfall line. Those areas that will be disturbed will be stabilized and reseeded. The site drains to the Burns Tributary of the Fossil Creek Drainage Basin. According to the Master Drainageway Planning Study prepared by Simons, Li and Associates, Inc. and dated August 1982, no onsite storm water detention is required in this upper reach of the basin. 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 PRELIMINARY DRAINAGE REPORT FOR FOX HILLS P.U.D.. SECOND FILING PREPARED FOR SPRINGFIELD 6TH FILING JOINT VENTURE DECEMBER 6, 1993 STEWART & ASSOCIATES. INC. 103 SOUTH MELDRUM STREET FORT COLLINS, COLORADO 80521 303/482-9331 9