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Home My WebLink AboutHOUSKA MINOR SUBDIVISION - 23 93 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT- CONSTRUCTION SEQUENCE .PROJECT:- Hous1ca XugD tztpA, STANDARD FORM C SEQUENCE. FOR 19 i 3 ONLY COMPLETED BY:. R- Ae- DATE: ¢/Lol r ,3 Indicate by use of a bar line 'or symbols when erosion control measures will be installed. Major modifications to an approved schedule may require submitting a new schedule for approval by the City Engineer. YEAR ----------------------MONTH_ i J I I I A M J S I I I OVERLOT GRADING - _ _ -- _M_ !( _ _ _- _ _ - _ ---- ---- - - ---- WIND EROSION CONTROL Soil Roughing Perimeter Barrier Additional Barriers '. Vegetative Methods i Soil Sealant Other RAINFALL EROSION CONTROL STRUCTURAL: Sediment Trap/Basin Inlet Filters Straw Barriers Silt Fence Barriers Sand Bags Bare. Soil Preparation Contour Furrows Terracing Asphalt/Concrete Paving Other - B V1L1>/,u& VEGETATIVE:. Permanent Seed Planting Mulching/Sealant Temporary Seed Planting Sod Installation Nettings/Mats/Blankets Other STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 V1 EFFECTIVENESS CALCULATIONS ----------- --------------------- ------- ------------------------- PROJECT: 140VdotA P. JO-BDwwioN STANDARD FORM B COMPLETED BY: R ,4 /Z DATE: qP_ ,e zo Erosion Control C=Factor P-Factor. Method Value Value Comment ---------------------------------------------------------- BAP- E SOIL /.00 / 00 0.t1Q�, A-s, PHALT S CONc, 0-01 A op 0.-?4 Ac. G c qvE� Ficra2 I.oO 0•80 MENTTeA,f /•00 0•SO ----------------------------------------------------- ---------------- MAJOR PS. SUB AREA BASIN (0) BASIN (Ac) CALCULATIU14S ----- ------ ----- ------ ------ ------------------------ -------------- 73,GS% wTD C = '(O• a �X 0) + (O.Q-X 0.01) -F ( 0. 0 4- X 6.01) w-v .P= O.5X0,B = o,4- OFF= �l- �0.zZX0,4)�x/00.=9/0% • o k � � 3. re s �, DI/SF-B:1989 (-7) RAINFALL PERFORMANCE STANDARD EVALUATION --------------------------------------------------------------------- PROJECT: HavifcA Ma.vor— Ju0Cotvifto,► STANDARD FORM A COMPLETED BY: g 4,2 DATE: 4- za 93 -- m ------------------------------------------------------------ DEVELOPED ERODIBILITY Asb Lsb Ssb Lb Sb PS SUBBASIN ZONE... .I Jac) (ft) M (feet) W --------- M OAe p-ATE 0.99 4" Z20 — D. L B Ie-------------- I — %�. GS I II II ------------- HDI/SF-A:1989 - - STEWART&kSSG%--.1ATES 103 S. MEL, iRT COLLINS, CO 80521 933DRUM1, PH. 482-FAX 482-9382 Consulting Engineers and Surveyors By: A P, Date: 4/7.e) -r Client: T)r=1y.,vis f 4 o ui k- 4 Sheet No. S of Project: 0 US k' A lvl 1 u e) p— -r /'q Subject: STn KM Ali A -rp- P— DF T /i -F I oA) A-r-r A C4 C FJ iVOL,L/ /J�?- -7 131 5: 151 4-85 3ol -401-- 314-7 I.L� IS01— 3 1 !001 5,7 9 0 oi �4- 0 4- - I J _L_ � _t I I I! j( I i I i I i I I t ;, 10,000- 000 R 0c, C) ;I iill i Or 0 t0 2-0 3D 40 50' W 90 Izp STEWART$,�SS(��tATEs PH. 482-93311103 S. RFAX 482-938OLLINS, CO 80521 Consulting Engineers and Surveyors By: R A E Date: .3 Client: 7) F x) AiLs No u 1 KA Sheet No. of � Project: H n us /-- A M i v o e, f u P. T>i ti t r /a m Subject: S r n P m U) A r E)e u u 4 r— ET- i , T iM ',P4 Y V1iovl f A P,.i9;A = I O. 03 A , t• i -a. I i I -i A..p- i .= . I 0. as Ate: 83. 8 /0 iDkl.vc AR A 13`.Ac-• t �Z!u �C 8vroV1) 13•/ 1 ! I !s_z. o XD•/(oZ) !�-! (io•Lx 0,838 = 0.33, jf 1 ! !Dev• l.Q Iz l=1 U•33!x!/Slx!Dy91=1 0,49,�.•r � 16 y,� 0 33 10.i9 9 ! 0. 0!7' G;FLT ; I j I Z(,mJV !IDGJ• Q ooyR=� 1.2Sxp,33 x.$-•Sff K - { - L H I I I�ISa�el E_ ' I ' . ! -. I 0. L xl G4 ;¢Xi ;► _ ! - 8. 48 FrIsC-C. 3 r- I ALL-OWIABLE - A, 1 Us!G j! Z��B X! Z I I D �eN AJ I 103 S. , t-ORT STEWART8e6S0%JATES PH. 482-9331MELDRUMFAX 482-938C0LLINS, CO 805212 Consulting Engineers and Surveyors By: R. AL • Date: 1ZZoZ,7-3 Client: Dr,-,ymr lh)uslela Sheet No. of 9 Project: Loo-sR A Atli /i i c f v n i> wicla A) Subject: S -7-n e_ M UJ A J A) 6 i -A!.__r, P--.(5- 4-1 D e .-ep- to-u 0 0 0 Z'11 ty Aee IV "r A' C zi 0, 7�6 + 4-0 F- --jE V :yA 0. 53 01 9cl i-IIIi;I!ilii, ;Ili --j ! I_�Ev�Q!to�R!=�U•83IX�4-ri6jxl0�%i% �IMiA., REV., 100 X1 63 "x • .L.. i I I{ i I i i I i- I I! I I,- I ! I I � I f � I I e EROSION CONTROL: The existing auto repair site is either all hardsurfaced or landscaped at this time. The area for the building addition and the new driveway will be disturbed; however,- the foundation will be constructed immediately, and the driveway will be based and paved soon after the building is started. The ground cover on Lot 2 that is not included in the Phase I driveway will not be disturbed in Phase I construction. As stated above, the driveway will be paved soon. As soon as the storm drain and new inlet are constructed, a gravel filter will be placed around the inlet providing a sediment trap. The site has moderate wind erodibility and moderate rainfall erodibility. The effectiveness required is 73.65%, and the effectiveness provided by the building, paving and sediment is 91.0% The storm water runoff -calculations and the mass diagram are included as a part of this report. -If you have any questions regrding this site, please call. Sincerely, / vd�- pnnnmq lo�L �• �.`i�0 A: RUTyFo.. Richard A. Rutherford, P.E. & L.S. `�"ssreRFU•.o�o: President c = 5028 - jrr ; enclosures %`f� '• F & �'••�o,.�' 2 STEWART&ASSOCIATES Consulting Engineers and Surveyors April 20, 1993 Mr. Glen Schlueter Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, Colorado„ 80522 Dear Glen: This is the drainage report for Houska Minor Subdivision which is located at the intersection of Riverside Drive and East Myrtle Street. It is in the Northeast '—a of Section 13, Township 7 North, Range 69 West of the 6th P.M. The site is made up of the existing property of the Houska Automotive Services Inc, which is Lot 13, Lesser's Subdivision and a metes and bounds parcel which has an existing older frame house on it. Lot 13 has the existing automotive repair business which is entirely developed and has an existing detention pond for Lot-13 runoff. Mr. Houska is platting the property into two lots. Lot 1 is an expanded Lot 13, Lesser's Subdivision, in order to construct an addition on the existing auto repoir garage. Lot 2 is for a future auto —related use such as a fast lubrication business. It is proposed to construct an additional detention pond on Lot 2 which will detain the difference of the runoff from the metes and bounds parcel between the historic two—year storm and the developed 100—year storm. The new detention pond encompasses parts of Lots 1 and 2.-'The new detention pond will discharge through a proposed eight —inch P.V.C. pipe to the existing inlet in the existing pond on Lot 1. The volume required in the new pond is 7,488 cubic feet.which was determined by a mass diagram. All of the metes and bounds .parcel was used as a contributing area. The allowable outlet rate is 0.49 cubic feet per second. - The detention was calculated according to the proposed site plan enclosed. If the site plan for Lot 2 is revised in the future, the detention calculations will need to be revised at that time. The construction will be phased to allow the addition to the auto repair building and the new driveway to be constructed as soon as approvals are acquired. The remainder of the detention pond will be constructed at the time of the construction of the business on Lot 2. There is 0.25 acres of offsite area that drains the rear lots of several lots that face Lesser Drive that drain onto Lot 2. The offsite area will continue to sheet flow onto. Lot 2 and will pass through the detenion pond but, was not included in the calculation of the required detention volume. 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 FINAL DRAINAGE REPORT FOR 'HOUSKA MINOR SUBDIVISION APRIL 20, 1993 PREPARED BY STEWART & ASSOCIATES. INC. 103 SOUTH MELDRUM STREET FORT COLLINS, COLORADO 80521 303/482-9331 . i . STEWART&ASSOCIATES Consulting Engineers and Surveyors April. 28, 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 cost estimate for erosion control.for Houska Minor Subdivision: 1. Rock Filter $100.00 The cost for reseeding the entire undeveloped portion of the Minor Subdivision and not including the Riverside area is as follows: Area = 37,462 square feet Cost = 37,462 square feet @ $0.029/square feet $1086.40 Collateral = $1086.40 x 1.5 = $1629.60 If you have any questions concerning this estimate, please call. Sincerely, 6LLtz a. 6ZVY� Richard A. Rutherford, P.E. & L. S. President jrr 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 _ tJ `', °c S� '� �. E. Lincoln Ave. z z Trimble �� vr° \\ o Ave ( E. Mountain Ave. E. Oak St. N P° E. Olive St. .Po dre E '^ '^ E Magnolia St. t` r �I � U E. Mulberry St. I' E. 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