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Home My WebLink AboutPHELPS TOINTON MINOR SUBDIVISION AND IL SITE PLAN REVIEW - 47 93 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTr STEWART&&SSOCIATES Consulting Engineers and Surveyors July 26, 1993 Mr. Glen Schlueter Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, Colorado 80522 Dear Glen: The following are the cost estimates for erosion control measures for Lot 1, Second Replat of North Lemay Subdivision, Second Filing: A. 1, Straw Bale Dike - 2 @ $100 $ 200.00 2. Sediment Trap = 1 @ $150 $ 150.00 3. Permanent Reseeding - 73,181 S.F. @ 0.0149 $1090.00 B. 1. Reseeding - 252,212 S.F. @ 0.0115 $2900.00 The City of Fort Collins requirement of 150% of cost would make the total collateral $4350.00. If you have any questions regarding the estimated cost, please call. Sincerely, 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 EFFECTIVENESS CALCULATIONS ------ ----------------=---------- -.--------------------------------- PROJECT: Lo-rl, .SeceND kAFMAT A/ci erq 6&MAy..!'us,Zvo, STAIIDARD FORM B COMPLETED BY: o-U UATE: ZG JYL /q I Erosion C-Factor P-Factor Method Value Value Comment -Control p --------------------------------------------- 'DA2E SOIL 1.00 .• /• O'D 1.89 Ac. �UILt>ti 0.01 /i0D /-03 Ae., As PHAc-TL Co�vc.e6r6 6,01 A 'h 19 Ac, CS7-•98(-JS1q6D C;,eq o 0,06 '%.o� D.28Ac• .SE1'/M6.v7- T�eAP*- I..00 QS0 ST/2 A w ----P j.CZ&LlALEAli_,eE�-rec-n•N� o,4S ----- =--------- /, 68A----------- MAJOR PS, SUB AREA BASIN (o) BASIN (Ac) CALCULATIONS ---- 73.8%, ----- ----- , ------------------------------------------- = WTD C FAW-ooe A81) f (6-0? )t/,0s�+(0.01k,f9) .014 4-3 w'fD - PACTu12• r 0- Sw X 0, 80 = 0, 0i-U ELF = CI - (ova 4 3 x o Ok > -23. 8 % -------------------------------------- --------------------------------1 DI/SF-B:1989 CONSTRUCTION SEQUENCE PROJECT: Lo-r L Xrco.ue RepcAY A)IkErm LEHAy Fliawe STANDARD FORM C SEQUENCE: FOR 19 93 ONLY.: COMPLETED BY: ' DATE: ,xuc. p993 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 ---------------------------- OVERLOT GRADING WIND EROSION CONTROL 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 - 1B u it.D/,o( VEGETATIVE: Permanent Seed Planting Mulching/Sealant Temporary Seed.Planting Sod Installation Nettings/Mats/Blankets Other - J I F I A I A I M I J I J I A ----------------------------------+---- 1-------------------------------------------------------------------- STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 0 RAINFALL PERFORMANCE STANDARD EVALUATION' ------------------------------------------------------------ PROJECT:Lor /, XECaND ReF4AT iOVOk+HCEh.4yJur,z„0 STANDARD FORM A COMPLETED BY: R Ae DATE: ------------------------------------------------------------ DEVELOPED ERODIBILITY Asb Lsb Ssb Lb Sb PS SUBBASIN ZONE (ac) (ft): M (feet) M (o) --Him H-----6,07At. Ezo - o. &o%-------------- I -,3-g e --------------------------------------------------------------------- DI/SF-A:1989 STEWART&ASSUCIATES 103 PH. S. IVIEL33DR1FAX FORT COLLINS, CO 80521 482-9482-9382 Consulting Engineers and Surveyors By: JRA P` Date: 71zo19-s Client: -T-Ai c-, Sheet No. of Project: Loz Q lu E-: flcnAj n R s PLA -r r- /U,9 k, rH LeFm Ay -fu PAD i L/ t-rle) Al t p . Subject: c-- (^.A C- L) ATiQ A.) r 'I /.SB i,_xt w -Z F, 6 CIA C. 1 6. � V 0 If ;'(0 U lA i I i 2 0-7 6 776 3 S 6 /IV - V f , 3 1 (V .1z X1 0 pe 0,./ Val f I ,' i ..I ii 1S. MELDRUhFAX , r'ORT COLLINS, CO 80521 EWART&ASSUCIATES03 ST PH. 482-9382 482-9331 Consulting Engineers and Surveyors By: R A Date: Vzo/ Client jEq r= / Ps —72) / x) no -TAI c- Sheet No. of Project: L a -r (2 A) E c o A) n P Z-A T- 0,4-- A) A.C. 1- H Z f --- M A (USWQ1f1QA.- 74J> Subject: T) r--- r ez-- AI -ri n A-) I>e) A) m AAA r-r /A r, z A iLi C-'Fto)t A o 0 (�z c K- 0 7 Z�r-X 0 53 !/7,364-� 16,1-1(, I -080 7-3,164- 'ZO. 90 S7, J --- i3o: 3 z 7'59-o /q-. 01 I 33,-76'8 I z9, 17 7 so___ — 13.� ! �00 2,66 /Z 10 31 41-0 13 Z-30 1 1 0 18, 1 I -I j 18 3 511 5 7' 1 14034 1 0 '7- 71 11�0 4,-5 :4 c? 30, 6 f.)o 5S-1 Z 5-0, wo C)o 0 jI.i i I;� � � ilii�i�li 30,000- - kL 7-0,00 N �_ 1, �� ;�� , J-- qJ Aer /0300 0 ----------- o 10 Z10 3o 40 5-0 Go -70 8D 90 Izo iBp rIA4 E M STEWART&ASSUCIATES 103 S. IVIEL 3DIRFAX r:ORT gOLLINS, CO 80521 Consulting Engineers and Surveyors By: P A P— Date: ? Client: P H 6: ps -T o + U -ro u T ✓c. Sheet No. of Project: / o i Q ,y F y. T E r o ,V rn Re P L.AT o,- % % H C B r? A✓ rJ B r /✓ r: •; . J Subject: 17y e-'r "n p e n (AJA rE;e &",u oF,c G 4 LCV L Q T/n tl r - i c-.L I' 10'U1!.G�.I Eia 9G, 7S3 s+F 21�2 i (i�C2vlo� 1G.7�'70G S•F; ,3.: ! C ! �.6 xi �!3�c� + ( o.zsx 0.63 - ' O,ss i (, 87 (),l -.0 53 i soot I � i i I I I !! O`•%i�3 i i�. j d.S$ F7? 3% M/N, OS3_X !• Z.f3 x 'G • 0 % i = C, F J. I 1 i I ! �Deu-•I Q/oy� = .ID S3 x -2i3! X �� 0 _ I. ¢-o c•F. t, 1 I I 1 i ..I ,fo.oy,�•! T"� :i 87[//-1 o�s.01 Soo'iZ+ _ DEv;. /oeye, i I /.2Sxj O•S3 x Q•I X 10.0;7 IG,Sc.F r. ,II1 l I 1 ! —- 1 Ii! I�, ,I I { I STEWART&OLSSOCIATES 103 PH. S. MEL9331 DRL)FAX ..-, FORT COLLINS, CO 80521 482-482-9382 Consulting Engineers and Surveyors By: P A r— — Date: 7/Ze)/I---5 Client Plye(-ps --FolAl 7-e .y T RI Sheet No. —of Project: Cnr nil,-# T E r 0 AJ V> QPVLAT A Op- T-H 'f I 4�1 J-(/V' 7; IV If/ e) 44 Subject: -n? r A, 1,0 A -7 r-- Ae, jE!o AMr-,=- CALC IP/ A 71n u r 141,5 7c2f--1 n A 0 C1 1 I - H.ii.t r.. I -7C 97 0: 7-5 7 Y3 , 4 y4t ! ! ! �?- i ! � I I ! 1 :3,1-6 ' r- r. 4t I) -- SO4k;. A Nut. ,I Y� - , 'S ix 0 7 av 31-0 0a fT,l« -7 ',//3II;II J IUD Ix -4 Lot 1, Second Replat of North Lemay Subdivision, Second Filing Page 2 A detention pond with a capacity of 37,516 cubic feet is planned in the southeast corner of the site. A twelve —inch A.D.S. pipe with a restriction plate will meter the allowable discharge rate of 1.58 cubic feet per second. The outfall drainage swales which flow easterly and southerly to the Lincoln Avenue swale are in dedicated drainage easements. The detention pond is also in a drainage easement. Erosion Control: The site is in a moderate wind erodibility zone and in a high rainfall erodibility zone. The existing ground cover is good with grasses and weeds. The sequence of construction will start with the building and parking and loading areas being stripped and the detention pond being built. The excavation for the detention pond is minimal with most of the detention volume being generated by the berm. The outlet pipe will be installed and a rock filter placed to immediately develop a sedimentation pond. The pad for the building will then be constructed with imported material such as pit run. The foundation will then be built which will alleviate some of the wind erodibility. The curbs and base material will be constructed to provide an all—weather surface for construction activities. The detention pond will be reseeded at the appropriate time'in the fall season. Straw bales willbe placed at the southeast corner of the public parking area and at the southeast corner of the employee parking and loading area. The Runoff calculations and mass diagram, the erosion control calculations, and the grading and drainage plan are enclosed as a part of this report. The erosion control collateral cost estimate is also enclosed. If you have any questions regarding this report, please call. Sincerely, Richard A. Rutherford, P. & L.S. President jrr enclosures STEWART&ASSOCIATES Consulting Engineers and Surveyors July 26, 1992 Mr. Glen Schlueter Storm Water Utility City of. Fort Collins P.O. Box 580 Fort Collins, Colorado 80522 Dear Glen: The following is the storm drainage report for Lot 1, Second Replat of North Lemay Subdivision, Second Filing. The site is located 370 feet west of the intersection of North Lemay Avenue and Buckingham Street in the Northeast 'a of Section 12, Township 7 North, Range 69 West of the 6th P.M., Fort Collins, Colorado. The area of the site is 6.07 acres, and it is located in. the Cache la Poudre River drainage basin. The. site is bounded by Buckingham Street on the north, by an undeveloped industrial lot on the east, by a self —storage business on the south and by an undeveloped industrial lot on the west. The site slopes at approximately 0.7% grade from northwest to southeast. Buckingham Street slopes from west to east at 0.30% more or less. The site is in the Cache la Poudre River 100—year flood plain. The site was approved previously as an industrial subdivision which is zoned I.L., Light Industrial; however, the only development that has taken place is the self —storage business. The drainage scheme approved previously is to have each lot detain the difference between the two—year historic runoff and the 100—year developed runoff on site. Each lot will discharge in surface drainage swales that are planned to drain east to North Lemay Avenue and then south along the west side of Lemay Avenue in a Swale with a concrete pan to the existing Lincoln Avenue drainage Swale. That approved plan is what is proposed for this site also. There is no offsite-area that drains through this site. The area west of this site drains southerly through the Vanworks property to Lincoln Avenue. The area north of Buckingham Street will drain into Buckingham Street, and, the areas south and.east of this site are below this site. The owner proposes to construct a cabinet manufacturing plant on Lot 1. A public parking lot and an employee parking lot and loading area will also be constructed. The building will have a finish floor elevation of 4946.5 which is 1.5 feet above the.100—year flood elevation of 4945.0. 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 STORM DRAINAGE REPORT FOR LOT 1, SECOND REPLAT OF NORTH LEMAY SUBDIVISION, SECOND FILING PREPARED FOR PHELPS-TOINTON, INC. JULY 26, 1993 STEWART & ASSOCIATES, INC. 103 SOUTH MELDRUM STREET FORT COLLINS, COLORADO 80521 303/482-9331