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Home My WebLink AboutVANWORKS MINOR SUBDIVISION AND IL SITE PLAN REVIEW - 28 93 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTS1 LWART&ASSOCIATES Consulting Engineers and Surveyors . June 1, 1993 Mr. Glen Schlueter Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, Colorado 80522 Dear Glen: This is the cost estimate for erosion control for Vanworks Minor Subdivision: There are no erosion control methods required. Reseeding for 11,200 S.F. @ $0.0298/S.F, _ $334 The City of Fort Collins requirement of 150% of cost would make the total collateral $501.00. If the minimum is $1000.00 for this project, the minimum will govern. If you have any questions regarding the estimated costs, please call. Sincerely, ' ��`�,P •GISTS' : `tF''. Richard A. Rutherford, P. & L. S. .•'�:'`�� `u•.' President 'G =� 5028 jrr i F & l• �:� O lilo F�OFC G V pFQ��`�� James H. Stewart and Associates, Inc. 103 S. Meldrum Street P.O. Box 429 Ft. Collins, CO 80522 303/482-9331 Fax 303/482-9382 No Text ONSTRUCTION SEQUENCE PROJECT: VAywoxkj Mi oe. cuj3 rLoT ?-A STANDARD FORM C SEQUENCE. FOR 19 13 ONLY COMPLETED BY:.-. I_AA} _ DATE: S- Z J3 If Indicate by use of a bar line or symbols when erosion control measures will be installed Major modifications to an approved schedule may require submitting a new schedule for approval by.the City Engineer. YEAR ----------------------MONTH_ I - J- �- F- -M- (- A- I -►A.- (- .1.-, J__ -A - -S- -a 1 -- -T,-- I N OVERLOT GRADING WIND EROSION CONTROL I Soil Roughing Perimeter Barrier Additional Barriers Vegetative Methods Soil Sealant Other RAINFALL EROSION CONTROL STRUCTURAL: Sediment Trap/Basin Inlet Filters Straw Barriers Silt Fence Barriers Sand Bags Bare Soil Preparation Contour Furrows Terracing Asphalt/Concrete Paving Other VEGETATIVE: Permanent Seed Planting Mulching/Sealant Temporary Seed Planting Sod Installation Nettings/Mats/Blankets Other ---------------------------- STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 EFFECTIVENESS CALCULATIONS -------------------------------/--------------------------------------- PROJECT: VA uW0/Cl J woe- ,/ U$ p/V/JIO u, tor 9-A STANDARD FORM B COMPLETED BY: le aA-0 DATE: S z Erosion Control C-Factor P-Factor Nethod Value Value Comment ------------------- ------ --- ------------------------ 'BA v- .Tort► / 00 / 00 Q. Z(o At., -- $U1t.DiN2s ?come:. D.ol /•Oo 0.59 Ac ExiJr. tIRAt/6t-%gR4i,Vi O./O /•OO 2.09 'Ae-. • f ---------------------------------------------------------------------- MAJOR PS. SUB AREA BASIN (a) BASIN (Ac) CALCULATIONS ----- ------ ----- ------ ------ =--------------------- -=-------------- Ts s a t. U. 0% t1r6 . WTD C = �0•ZLx l•oo�t (0,5-4-x O)+�2•o9xd.io� 0,07 z: w mot- a. p= A o a t-i F F =�I — CO. 072. X /•O o)] h /00 o 0 of } 72-8 %, ---------------------- f ------------=----------------------------------- HO USF-8:1989 RAINFALL PERFORMANCE STANDARD EVALUATION --------- PROJECT: --------------------------------------------------------- !/ANwo,e,er )(Ai.uo,e to-r 9-A fu8 D STANDARD FORM A COMPLETED ------------------ BY: _ k /2 DATE' Sfa�,p3 DEVELOPED SUBBASIN ----.---------------------- ERODIBILITY ZONE Asb I (ac) Lsb (ft) ------------------------- Ssb Lb (%) (feet) Sb (%) (S ) --------- Torwcfire ----------- HIGH ------- 2.85AC. G30� O.47% G30 -D 47%I--7Z,b% DI/SF-A:1S STEWART&kSSC MATES 10348S.MELDR2-9331FAX UM FIT COLLINS, CO 80521 PH. 482-9382 Consulting Engineers and Surveyors By: � A K'- Date: 71 zfl /i3, Client: VAA) wo e es J7AI Sheet No. of Project: V & AiW bIP Kt AA I k,),9 e, 0 R r> I V 11 /0 Q LOT Subject: f 7-0 E- A(i%k-' /21) A) 4,E)EE A - I- r- (Y Z-4 Ti/7 x i el 01 A 31..-- ACI. 1-fo p- IL LL. Mpp- vcouj C-11 S! II % JJT 67.0 -r A-1III I- Of 54IqL 8 71 0/10, I. 'R C. 0 ?-,3S-. A' 0 SO Y, 01 37) 0�- '�-q) S'001 113 6'- 7 1 0, 7 7 I' I,! I i I It �;! .7 Z' so x-o's -So) 7. 0�ZIL 0 j D. !rll'r 1/00'N/k I CQl J1z5x 0-591XI 4-9,71 9 1 _I= / � �- - X1 8 i b s- ItI iIl 4 STEWART&,SSC DATES 103 S. 482-482-9331 FMELDRUM, )R9382T COLLINS, CO 80521 PH. AX Consulting Engineers and Surveyors By: Date: J -F 3 Client: I-JA Ad w o p- A-:s T- A) Sheet No. of Project: to 0 P- K r M /A) o r-, fiz R n /L,)/-/ //? A) - Ln z -7 - A Subject: S T n P-- AA W A7-E P-, Ut/ 0 A= Cc) L- q -Tle) A.) r) ev. A Vanworks Minor Subdivision Page 2 The finished floor of the new building is proposed to be at 4945.00 which has a freeboard of 0.50 feet: If a variance for this amount of freeboard is necessary, we will request one. Erosion Control: The site is in a High Rainfall Erodibility Zone and in a Moderate Wind Erodibility Zone. The present ground cover is gravel with some native grass/weed ground cover around the edges. The construction of the new building will begin by constructing the pad, which will be approximately two (2) feet higher than the existing ground, by importing fill material which will probably be pit run. Then the foundation will be excavated and poured. These two tasks will roughen the soil to prevent wind erosion. This will be the only disturbance of the existing gravel and/or grass/weed ground cover. The site drains southerly across the existing gravel parking lot at a very low velocity so there will not be erosion from the storm water discharge. The required rainfall performance standard is 72.8%, and the existing site provides a performance standard of 92.8%. The grading plan and the runoff calculations are included as a part of this report. If you have any questions concerning this project, please call. Sincerely, �Q . 61zl-w--c Richard A. Rutherford, P.E. & L.S. President jrr enclosures ��ART SSOCIATES s 8� Consulting Engineers and Surveyors June 1, 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 the Vanworks Minor Subdivision at 900 East Lincoln Avenue, Fort Collins, Colorado. It is further described as a part of the Northwest a of Section 12, Township 7 North, Range 69 West of the 6th P.M. It is located in the Cache la Poudre River Drainage Basin. It is bounded on the south by Lincoln Avenue, on the west by industrial uses in the Patrick Subdivision, on the north by the undeveloped North Lemay Subdivision and on the east by existing self —storage units. The site slopes from north to south at approximately 0.3% grade. There is an existing large drainage swale on the north side of Lincoln Avenue in the public right—of—way. It drains easterly at a very flat slope. Vanworks has their conversion manufacturing business at this site in an existing building. They have a separate sales building at a different site. They would like to construct a new warehouse building onsite but detached from the existing building. In order to construct the new building, a Minor Subdivision Plat was prepared that adds a part of Lot 9, North Lemay Subdivision, to the existing site and also creates a modified Lot 10, North Lemay Subdivision, which becomes Lot 10—A, Vanworks Minor Subdivision. Lot 10—A is not being developed at this time and is not included in this report. All of their existing site, except for their building, ls gravel surfaced parking for employees, driveways and outdoor storage of vehicles waiting to be converted. The site is in the 100—year flood plain of the Cache la Poudre River. It is in Zone A-4 and shown on FIRM Map.080102 0002 B. The site is in the 100—year flood plain and is so flat that runoff is very slow. It is proposed to not hard surface any parking area. Therefore, the only new impervious area which will be created is the proposed 7200 square foot building. For these reasons, we are requesting that no onsite detention be required. The owner would agree to retain the runoff from -the proposed building or at least not change the existing sheet flow at a low rate to.the existing Lincoln Avenue drain swale. 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 STORM DRAINAGE REPORT FOR VANWORKS MINOR SUBDIVISION 900 EAST LINCOLN AVENUE JUNE 1, 1993 STEWART & ASSOCIATES. INC. 103 SOUTH MELDRUM STREET FORT COLLINS. COLORADO 80521 303/482-9331