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HomeMy WebLinkAboutDrainage Reports - 10/18/1991Final Approved Report j&11)j,11_ Date 10PERTi OF FORT COUMB Final Drainage and Erosion Control Report for COWAN STREET APARTMENTS (615-627 Cowan Street) Fort Collins, Colorado - Prepared for. LEON AND RUTH HETHERINGTON 627 Cowan Street Fort Collins, Colorado 80524 Project No: 1259-01-91 Date: September 26, 1991 a 4836 S. College, Suite 12 Fort Collins, CO 80525 (303)226-5334 October 11, 1991 Project No: 1259-01-91 Susan Hayes City of Fort Collins Storm Water Utility P.O. Box 580 Ft. Collins, Colorado 80522 Re: Cavan Street Apartments; 615 Cowan Street, Ft. Collins, Colorado. Dear Susan, This letter serves to meet the estimate of erosion protection cost requirement according to the City of Fort Collins Erosion Control Reference Manual for determining the security amount (performance bond, irrevocable letter of credit or cash'escroa) which the owner shall be required to submit. The cost to provide the erosion control bales as shown on the Grading, Drainage and Erosion control plan for the project will be.approximately $450.00: $150.00 for materials (81.00 per LF) $300.00 for labor 32.00 per LF) $450.00 Total 33.00 per LF) For security estimate, 1.5 times the $450.00 is $675.00. This is less than the $1000.00 minimum security deposit required by City Policy. The estimated cost to provide seeding for rehabilitation of the site should erosion control measures not be implemented would be as follows: 12,500 square feet of disturbed area $0.0116 per square foot $145.00 Total to seed the site For security estimate, 1.5 times the $145.00 is $217.50. This is less than the $1000.00 minimum security deposit required by City Policy.,, If you have any questions concerning the estimates call at 226 Sincer , Shear Engineering Corporation Brian W. Shear, P.E. BWS/so cc: Leon and Ruth Hetherington presented here, please 3„�•.��1FIE(psFp S m 20262 '. i Q > .. 0 ; 00 ���iics'S/oNal 4836 S. College, Suite 12 Fort Collins, CO 80525 (303)226-5334 PAGE 1 Project No: 1259-01-91 Date: September 26, 1991 I GENERAL LOCATION AND DESCRIPTION A. Location 1. Cowan Street Apartments are located on Cowan Street, south of Mulberry (between Myrtle and Laurel) and west of Riverside (between Stover and Colorado). 2. The property is a part Block 186, City of Fort Collins located in the NW 1/4 of Section 13, UN, R69W of the 6th P.M. B. Description of property 1. The property contains 0.87 acres, more or less (190'x200'). The north 100' is currently a 12 unit apartment complex with parking. The south 100' has 2 single family residences and several out buildings. 2. 5 additional apartment units with additional parking and an additional single family dwelling unit are planned for the southern 100' piece. The northern 100' piece will remain as is and be unaffected except for minor site improvements .not affecting storm drainage. 3. The site slopes moderately toward the east with a small amount of offsite runoff contribution from approximately 1.5 acres southwest of the property. The yard for the existing single family residence facing Cowan Street (627 Cowan Street) sits in a minor sump condition. This occured when Cowan Street was constructed at an elevation higher than the yard of the residence. The. finished floor of the residence is higher than the street grade. 4. The site is currently zoned RM (medium density residential). It is in the process of being rezoned to NCM (neighborhood conservation medium density). II DRAINAGE BASINS AND SUB -BASINS A. Major Basin description 1. Cowan Street Apartments are located within the Old Town Drainage Basin. B. Sub -basin description 1. The site is contained within a 2.35 acre sub -basin of the Old Town Drainage Basin. 2. Currently, a majority ,of the offsite storm runoff contribution from the southwest, is directed to the low area which is the yard around.the existing residence (627 Cowan).' A portion of the existing apartment building, the existing parking lot and the .remaining property on the northeast portion of the site, is contained within its own minor subbasin (See Grading and Drainage Plan). 3. There will be a minor change to historic flow patterns for this property after the proposed addition of 5 apartment units and additional parking. A greater amount of offsite contributing runoff to the property will be routed around the existing single family residence (627 Cowan). This will be accomplished via parking lot flow direction of runoff to the existing parking area (See Grading and Drainage Plan). PAGE 2 Project No: 1259-01-91 Date: September 26, 1991 III DRAINAGE DESIGN CRITERIA A. Regulations: 1. City of Fort Collins Storm Drainage Criteria and Erosion Control Criteria was used. B. Development criteria reference and constraints: 1..To our knowledge, there are no previous drainage reports for the specific area. 2. The surrounding properties are fully developed. The existing grades are the primary grading design constraint. Cowan Street was constructed at a grade higher than the yard for the existing residence at 627 Cowan. A majority of the Proposed improvements will be raised in order .to direct storm runoff away from the single family residence to .Cowan Street. C. Hydrological criteria 1. The Rational Method for determining peak flows was used for the evaluation of the 2 and 100 year storm event. The calculation of all flows for each sub -basin and combinations thereof, appear in the appendix. Peak flows are designated on the Drainage plans.. D. Hydraulic criteria 1. The grading of the. parking lot will provide the main conveyance of storm runoff through the site. No other storm drainage appurtenances are anticipated. IV DRAINAGE FACILITY DESIGN A. General concept 1. Generally, a majority of the storm runoff (Offsite contribution and a majority of the onsite contribution) will be conveyed to Cowan Street through the parking lot. Asphalt curbing will be provided to intercept runoff and channel all flows to Cowan Street. Cowan street flows are conveyed to the City storm sewer system. . a. From the City storm drainage inventory list, a storm sewer exists in Cowan Street. The nearest upstream inlet is located at the intersection of Cowan and Laurel and the nearest downstream inlet is located at the intersection of Cowan and Myrtle). b. No storm sewer is intended with the propsed site improvements. 2. A small amount of direct contributing runoff to the low area of the existing residence at 627 Cowan will continue to contribute to the low area (Sub -basin A; Developed Conditions). A smaller amount of offsite runoff will contribute to the low area upon the development of the additional 5 units and parking lot than contributed before development. This is because most of the offsite contributing runoff is rerouted away from the low area. PAGE 3 Project No: 1259-01-91 Date: September 26, 1991 IV DRAINAGE FACILITY DESIGN (continued) A. General concept (continued) 3. Erosion control facilities will be utilized during construction in order to protect downstream drainage facilities as well as surrounding properties. V CONCLUSIONS A. Compliance with standards 1. All drainage calculations comply with the requirements of the City of Fort Collins Storm Drainage Criteria Manual. Stormwater detention will not be provided. A variance from City Storm Drainage Criteria will therefore be requested. 2. Because of the relatively small increase in runoff, stormwater detention will not be provided. This report. serves as a formal request to the City of Fort Collins Drainage Utility for a variance from City of Fort Collins standards regarding stormwater detention. a. The amount of stormwater runoff increase for the sub -basin studied is small. The amount of stormwater runoff increase within the entire Old Town Basin will be even smaller. b. The amount of runoff determined to contribute to the low lying area is greater than the entire increase in runoff anticipated. Some runoff will never leave the site. 3. Temporary.erosion control calculations and facility design, comply with the requirements . of the City of Fort Collins Erosion Control Manual. B. Drainage concept 1. Except for the small amount contributing to the low area of the property, all storm water runoff, including a majority of the offsite contribution, will be conveyed to Cowan Street via the parking lot. 2. The grading plan allows for .the effective conveyance of a majority of contributing onsite and offsite storm water runoff through the site, to Cowan Street and to the Storm drainage system. 3. Historic and developed peak flows at several concentration points are documented on' the Grading and Drainage Plan. In summary the historic and developed peak flows at the concentration points studied, are as follows: C2/C100 02/0100 C2/C100 02/0100 Sub -basin historic historic developed developed cfs cfs A 0.65/0.81 2.6/11.0 0.65/0.81 1.0/ 4.1 B 0.65/0.81 0.4/ 1.6 0.70/0.88 2.4/ 9.1 C 0.65/0.81 0.2/ 1.0 0.65/0.85 0.2/ 1.0 Basin 0.65/0.81 3.1/13.4 0.68/0.85 3.5/14.2 This summary is also included on the Grading and Drainage Plan. PAGE 4 Project No: 1259-01-91 Date: September 26, 1991 V CONCLUSIONS (continued) B. Drainage concept (continued): 4. Detention will not be provided. S. Temporary Erosion control protection will be provided according to the requirements of the City of Fort Collins Erosion Control Reference Manual. a. Wind erosion requirements are ._excluded •according to Section 4.2.1 since the site is less than 1 acre. b. Erosion protection requirements as determined in: Appendix B will be implemented. Erosion control provision are itendified on the Grading and Drainage and Improvements Plan. VI REFERENCES 1. City of Fort Collins Storm Drainage Criteria Manual. 2. City of Fort Collins Storm Erosion Control Manual 3. City of Fort Collins topographic Aerial for the NE 1/4 of Section 13, T7N, R69W 4. City of Fort Collins Storm Drainage Utility inventory mapping APPENDIX A Storm Drainage Calculations Figures I �Y<iir'�7 N �� . Ii , .i.n �..• �, �y!'.� ,fly. "� r + 1, �•I'i � . � w .IN• �'1 �} v �,? ��^.• y , �r v � � (iY«S S � v f3 ���� f $•j ` V •'i l.�w�• .'ter I _ � f �y y):cji likr ��1.41, r+y'F:Z„, •f.%l: .5. 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RI �(0..6SxG�5���9f�/0 MIMI- 14 15 / 16 rzffE F/�. 3-,� ?It �(Fi PF.P %lD�to 17 / 18 19 rA=(245x 20 W ENO `7 dowgAl STREEPREPARET' APA.eriN.�w/rS' D GV _S�iPM D.QA/.t/A� R/1d/OF.0 DHre 2, I — zz 3' 4 m .�s S 67 Z' = 7 30' G / 7 = CJ? A4a'-/.3Sf G Z. ioo 10 3-/� .PEA. _A&Zhe 12 Co. 13aAr 14 15 16 17 18 �. 19 20 21 22 23 24 _. .. 25 26 27 executive" 28 MYRTLE STREET � , .ti:�;' '.L"J.... :rj`. a <.• ;� rl iw, a •.L.. . Y,�� � qiw �f'• f J �'�(,r '}r`��f ' � �L��� • fY� � •yam 1`,� 'C.. WOAv .,(. F t � ri .. .r.•r�.�♦ � 1 ' '1> tl C� '� ' I � I W � r : �nc.t 1l'.t_ . .rya, s ' O .q• ''� Fa•:,,�" � NIX �~,� i :. .t'�I:':'.", •,� i8cr NNW � .f rl\i x 49175.0 LAUREL STR T, *. .._ ...,. .'..�.i-.! � .•r{{: do �i � � � ,��Y.�'.i'-'r+�. •L % DE_✓. EL D .PEO i PAGE _ �e-7 CO.�,gN sT�,EET .4P,B T � s PREPARED 6Y N0. _ S1'a�'M�•PAiit/f 6E �2[!n/OFic onre I 24 9/ 2 PREPARED CV 7 2 — f��Llf�if�s�•c/ © OE✓EGQ���gdii/�FF 4 5 s 746MET 0. 74 /. 2/Ae.M9 x *9,4;rftJ0 Z O S= i 70 e EL = 0/69:594SAASE/Nd=1AJ1,477nOA1s -=�91fEG �fETBd/S'�j D✓E.C�(�jn/O = 23D to = Ta?�✓EL pig,-A�c/LE_ l's/Ll.yc1E�•�,p= 255� .12 •-CTif_OV"V.aNa f Ti.,AE e?AyW EL&Q) 13 0.70) "z30i2) ��/ 310 f L 14 L _ 16 I` " t = 6L ? (2 / <o..zo�s ��s)i��3�%%z `�c`i. 36 ],�,:rl /oo 18 ; 20 00 •r 7��/��U��t�1/• 4.9.rriviF a y 7�XlsL_C,.dSE %Q Mi.�/..J 21 Al 22 / 1A1?E.t/S/2' C.PFi Ala'. 3 ; )= Z /D ZAIACA69-1 ,�Al2aAE 23 --E Rz OFF = G' SLi = (�O. 76 )C . S.9) C. ¢ 7) = Z. 4 0 fa 21 G. SaoQ 25 25 27 executiue� 28 EtIAO:8) i �7 n^��� �RGrJ _� W l..�GT PREPARED BY /��%%/eTME�S oAjE 2 3 4 G, .4 s z¢—efs z-= a. -BAZo 6 7 — - A G' LOPED AcL 9�_ 2lv X Q szs) 10 n Z!A.S— 6 7 X�73o' 11 .a 230' Dv,E.PLA.t�P . 12 = 3ZS' CN.9.t/�tLE/moo 13 i - 14 (/- O. 8" � �/ .32j = // AZZr Cam% 4gW S 15 = / - YeZQLO/T y =. 2. Z 16 2 .. 17 Z=-32.ri'z� 18 �/.87 6D %O x Liao — G 2`V.ro�� 1977 20 i 21 22 23 -7. 24 AC = ,Q/1isCOEF—G rir� = / - .._ _ 26 27 cxeCLISW' 28 " 3.1.6 Runoff Coefficients i The runoff coefficients to be used with the Rational Method referred to in Section 3.2 "Analysis Methodology" can be determined based on either zoning classifications or the types of surfaces on the drainage area. Table 3-2 lists the runoff coefficients for the various types of zoning along with the zoning definitions. Table 3-3 lists coefficients for the different kinds of surfaces. Since the Land Development Guidance System for Fort Collins allows land development to occur which may vary the zoning requirements and produce runoff coeffi- cients different from those specified in Table.3-2, the. runoff coefficients should not be based solely on the zoning classifications. The Composite Runoff Coefficient shall be calculated using the following formula: C = (!C;Ai)/A, i=t 'Where C =Composite Runoff Coefficient Ci = Runoff Coefficient for specific area Ai Ai = Area of surface with runoff coefficient of Ci n = Number of different surfaces to be considered A, = Total area over which C is applicable; the sum of all A; s is equal to A, Table 3-2 RATIONAL METHOD RUNOFF COEFFICIENTS FOR ZONING CLASSIFICATIONS Description of Area or Zoning Business: BP, BL.....................................:.................................................. Business: BG, HB, C........:......................:. ................................................. Industrial: IL, IP.......................................................................................... Industrial: IG............................................................................................... Residential: RE, RLP................................................... :.. ............................ Residential: RL, ML, RP............................................................................. Residential: RLM. RMP............................................................................. Parks, Cemeteries...................................................................................... Plavorounds......................................................... :..................................... Railroad Yard Areas................................................................................... UnimprovedAreas....................................................................................... Zoning Definitions Coefficient 0.85 0.95 0.85 0.95 0.45. 0.50 0.60 0.65 0.25 0.35 0.40 0.20 R-E Estate Residential District — a low density residential area primarily in outlying areas with a minimum lot area of 9,000 square feet. R-L Low Density Residential District =low density residential areas located throughout the City with a minimum lot area of 6,000 square feet. R-M Medium Density Residential District - both low and medium density residential areas with a minimum lot area of 6,000 square feet for one -family or two-family dwellings and 9,000 square feet for a multiple family dwelling. R-H High Density Residential District— high density residential areas with a minimum lot area of 6,000 square feet for one -family or two-family dwellings, 9,000 square feet for a multiple family dwelling, and 12,000 square feet for other specified uses. R-P Planned Residential District — designation of areas planned as a unit (PUD) to pro- vide. a variation in use and building placements with a minimum lot area of 6,000 square feet. R-L-P Low Density Planned Residential District areas planned as a unit (PUD) to permit variations in use, density and building placements, with a minumum lot area of 6,000 .square feet. MAY 1984 3-3 DESIGN CRITERIA No Text No Text APPENDIX 8 Temporary Erosion Protection Calculations Figures RAINFALL PERFORMANCE STANDARD EVALUATION --------------------------------------------------------------------- PROJECT: GZ7 CoW-i t/ STANDARD FORM A COMPLETED BY: cs�c�p.Lf7pP �vna�vDATE:.61 -------------------------------------------------------------------- IDEVELOPEDIERODIBILITY1 Asb 1. Lsb I Ssb I Lb I Sb I PS SUBBASIN ZONE (ac) (ft) I (%) .1(feet) I (%) (%) --------------------------------------------------I------- /it %s /. 36 78 9 A ---------------------------------------------------------------------I )I/SF-A:1989 EFFECTIVENESS CALCULATIONS ---------------------------------------------------------------------- [PROJECT: Ce7 COvvwAl S>.eEET APA.¢TMENT'S STANDARD FORM B COMPLETED BY: syEA,e ENC��.✓E�.P/i�/G co,�Poe,,TioNDATE: ,9 Erosion Control C-Factor P-Factor Method Value Value Comment ---------------------------------------------------------- 6rS rABZ ISHED CSVASS Q.03 A00 d AW,-/ e55565 Bq.eE 50/4. /, 00 400 PA)Z,</A/G GoT SMAW 4W4 ES /. 00 -0. 80 N. 51,0. PER.i w&r, ----------------- PS SUB MAJ BASOINI (%) (BASIN ------ ----- T 78.9 B --------------- I/SF-B:1989 •--------------------------------------------------- AREA (Ac) I CALCULATIONS ------ ------------------------ --------------- ----- ¢7 � CpvEaEv RHEA = /. /B AC = Boq BARE GROlJND =' p, 29 /fC = 20 % A00)71,47c O.zz �,vEr P-FAcro�e = 0. so . Z-/-Co. zz x 0-84>)]x, /oo = gZ. ¢ % ELF of gp, ¢,; PS of 76.1*7 CONSTRUCTION.SEQUENCE PROJECT:••4'27 00014 I -677 AGK. Z2M /..5 STANDARD FORM C ' SEQUENCE. FOR. 19'�Z .ONLY ' COMPLETED- BY -,: , ,eZ4/e r0411,56e/NG DATE: z/�/g� Indicate by use of ;a bar 1fne"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 -__-_ �A I M��/ ✓.IA �.S �O�NIO �J IF1 _MONTH OVERLOT GRADING I I WIND EROSION CONTROL Soil Roughing:... .. - I:. .. ,,r•,r,;,.,.;., Perimeter Barrier Additional Barriers Vegetative Methods I, Soil Sealant Other RAINFALL EROSION.CONTROL., STRUCTURAL: Sediment Trap/Basin-' Inlet Filters. +r "4x00K�41cr Straw Barriers. :. fiLDG ;. . Silt Fence Barriers. Sand Bags Bare Soil Preparation Contour Furrows, I I Terracing- Asphalt/Co nc rete, Pavin oA,eci"�� Other ,. VEGETATIVE:` Permanent •Seed Planting Mulching/Sealant Temporary Planting BNi�oi .Seed Sod Installation uG I Nettings/Mats/Blankets•, .'.., Other I I I ------------- ----= - -- STRUCTURES: .INSTALLED...BY.. ,..p�FR, -- - - ---------------------=---------� ~':` MAINTAINED BY;, VEGETATION/MULCHING' CONTRACTOR DATE SUBMITTED.; �APPROVED BY CITY. OF FORT COLLINS ON HDI/SF-C:1989 - :; PAGE 23 I O I'a, CT O O C: 1 I O 11 44to In U. , t Ln I g W W W W i 1 i G I TI, �r -lo- L!•) Ln Ln to UP) Un I a• I wWMW W WCam.=WM 1 I 1 C I W m m a%m m C)C)CT C) C) 1 C)OOO . . . . . . . . . . . . . . . . I O 1 a• a' a- � v a- c a- cr a• a' V U) of Ln 1 M I WWgW W WC)W W W WgWgW 1 .1 1 1 CD1 r� W W co C) C) C) C% IT C) C) C) m C) C) C) C) m CTm . . . . . . . . . . . . . . . . . . . . . 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I M I r r N N N N M M M M M M M M M M M M M M M f ri M M M M M W I 1 00 W W W W g q W q W W W W q W W W W W W q q W W W W U I I 1 O t MNIp W C)C a' czr a' a• Ct a' Ln to Ln to tO LO t0 t0 G 1 1 I M I G r•1 .--t r-t rti N N N N N N N N N N N CV N N N N N N N N N C t I WWgW MM M 000CCC CCOO qW CO W WqW 0000000000 Wq O I I W 1 Lo 1 Ln Ln(nN M d- Ln t0 r� r� r� W q q m C) C) C) C) CT 000000 W I N 1 LT OO 1;.-r rH 1: r4141- ti rti 1: 1: 14 rr NNNNNN a- 1 I r�q WW co cc cc co WW W co qq WW g q q co W W co co qq I - I O I a' L n O M Ln t 0 co g M*C:) 0 0. -- t••• r ti. -- t N N N N L M M M M f M M I t 1 N I W M Co O O O C O O •--t r-t r-t .-+ r♦ .--t •--i .-+ r-t .--t r~ .--i rr r•. r-1 .--i rti 1 1 t�r`gt]pOpCpgW WgWW WgWW W WggWWWWWq 1 1 I In I W N W r--t cLO I,, I,, w (7) C)0(D.-•L .-•i .-t .-+r••I N N NMMMM M 1 I . . . . . . . . . . . . . . . . . . . . I rr I tO co co CT C) m ON C) C) C) 000. 0. O. 00 G. OO C. c.0 i i r�^nr\r�n n(�r`nn W W g co W co co W Co W w w w W W I 1 I O 1 t0 MO a•nm O:-+N M m a• a• Ln Ln Ln Ln t0 W t0 t0 rI f-IL0 t0 t0 1 I . . . . . . . . C. C. . . . C. . . O. . O. . . . . . . . I 1 I Ln 1 mO a'LO r-,W wr,r\r�t0 t0 LO Lo a•a' M MNNC): t0 a'.-4 C)t0 1 1 I CD I CD N N N N N NNNNNNNNNNNNNN r•+r q r r-I O O I I rin rin I`r` r`r` r`i-I^1` r`n r`r`nn nr, nr`r`r`r`n 1 31 OOOOOOC 0000000000000000000 I o CD F— I O O O O O O O O O O O O C O 0 0 C) 0 0 0 C) 0 0 0 0 0 I JZ La_ 1 r-IN M a•Ln to r,,W CT c) Ma•Ln tO r, co a)i OLn O to OLnO I U- W �. I r-I r-t rti .-+ rti r•1 rti r-I rH r-t N N M M z2- a' Lo 1 J TABLE 5.1 PAGE 24 Table 5.2 C-Factors and P-Factors for Evaluating EFF Values. Treatment C-Factor P-Factor BARE SOIL Packed and smooth . . . . . . . . . . . . 1.00 1.00 Freshly disked. . . . . . . . . . . . 1.00 0.90 Rough irregular surface . . . . . . 1.00 0.90 SEDIMENT BASIN/TRAP. . . . . . . . . . . . . . 1.00 0.50(1) STRAW BALE BARRIER, GRAVEL FILTER, SAND BAG. 1.00 0.80 SILT FENCE BARRIER . . . . . . . . . . . . . . 1.00 0.50 ASPHALT/CONCRETE PAVEMENT. 0.01 1.00 ESTABLISHED DRY LAND (NATIVE) GRASS. . . See Figure 1.00 SOD GRASS . . . . . . . . . . . . . . . . . . . 0.01 1.00 TEMPORARY VEGETATION/COVER CROPS.0.45(2) 1.00 HYDRAULIC MULCH @ 2 TONS/ACRE. . . 0.10(3) 1.00 SOIL SEALANT . . . . . . . . . . . . . 0.01-0.60(4) 1.00 EROSION CONTROL MATS/BLANKETS. . . . . . . . . 0.10 1.00 HAY OR STRAW'.DRY MULCH After planting grass seed, apply mulch at a rate ot Z.tons/acre (minimum) and adequately anchor, tack or crimp material into,the soil. Maximum Slope. Length W (feet) 1 to b 40 . . . . . . 0.06 1.,00 6 to 10 200 . . . . . . . . . 0.06 1.00 11 to 15 150 . . . . . . 0.07 1.00 16 to 20 100 . . . . . . . . . 0.11 1.00 21 to 25 75 . . . . . . . 0.14 1.00 25 to 33 50 .. . . . . . . . . 0.17 1.00 > 33 35 .0.20 1.00 NOTE: Use of other C-Factor or P-Factor values reported in this .table must be substantiated by. documentation. (1) Must be constructed as the first step in overlot grading: (2) Assumes planting by dates identified in Table 7.4 thus dry or hydraulic mulches are not required. (3) Hydraulic mulches shall be used only between March 15 and May 15 unless irrigated. (4) Value used must be substantiated by documentation. APPENDIX C Grading and Drainage / Improvements Plan Drainage Plan, Historic Conditions Drainage Plan, Developed Conditions GENERAL LMSTRIILTION NOTES: (D provide lie wide aEl approach for Pr used future Te idenee Remt existing Nollmom curb As Imeswry I Houyood curb »panel details OE Pmvibe aexisted walk behind existing Nollimod curb and sett,, to Beet Hnliyuoa am, gutty aid walk evil See Hollowell orb, gutter and walk deuu tell fleet. QEALSting after .ul enter pit 9O Provide 2' aide actual approah far nxistiaR regmyc• Am" misun Nollval cure and a .wall portion of existing Nollmw curb, Butte, aid walk as necessary San ballet mrb apprmch details Relxate crustier Nil boxes QFilms drive approach as Audi, to araiWR. driveway Nigh existing wive approval Ague existing Nollymd curb, pal mad caw as get: ..... y ©Provide adust .... I base and Par,ne to straight,, artrnay as 41 OT ELACK9 Hollrewd curb, 9utte, ad sidewalk O4 EaiSUA water service step box O9 Proposed Al single b,Lly ....dual Proposed Honied Floor elevation • 70.69 ® Exiting buildings to or real ® Existing tree to be climbed according to Pwdre Fire Al reea+r,ml ® Eamq... y ,luck, xeoe only: Provide Ixkelle duct, aid posts 1 EAST 130.00' BASIN BOON All ©„ .17 ACRE L � �ow4-0-- 1P 1 ' GARDEN LEVEL COxcnnO Q / e wxc. wale _ all Ell x / SUB -BASIN o 21 0.27 ACRES ASPxALT CUM n -- E AgM T xG —I 0 L WI p50 \ \ SUB -BASIN \ 0 1.91 ACRES ent 68 j CONCENTRATION POINT SUB zBASPI K], • III 0 0. CIS II I ENTIRE BASIN+ Oz' 3.06 CfaI — DCIA 1 .06 I II ON Ad IN A : POINT I Oz• 2.32e(a OCR 11.0 SUB-BASIN OB: Oz • 0.38 Ch I 0NG 1.56 CIA W L N Z Q y O IN' now _- 540 E_4 �•••� TRAVEL DISTANCE USED IN CALCULATIONS �•� BOUNDARY OF ENTIRE BASIN rnEARINATInEl NEAR REETFR PERSPECTIVE VEW sper-� BOUNDARY OF SUB -BASINS Lett h'� LAUREL SCALE : I'=100' VICINITY MAP STREET a N , AND SIOEWX'I 'HOLLYWOOO` i DIY OF END MILIAL CDAYOa I OBSOLETE UTILITY PLAN APPROVAL FOR RECONSTRUCTION ONLY' 1 etxuoo Minn AW P °^ elm we a, 9aaaeia Naloeu mstorie Maine gravlu0 amWM d tsep SECTION A-4 cis ^ a 0.65IOB1 .4. 0.1.01 . MEADOW ' �w „ d 0.65 0d11.6 A.704.88 EA/ 9.1 n< ism n va xury °°t HOLLYWOOD CURB, GUTTER AND WALK •'+ ----I w.t. lair [ 3.6/0.el ME 1.0 0.66✓0.85 )l 1.0 art, iea: a R.\, a..-_.._-- 251, Up., Ban• 0.65/0.01 3.1/sS4 0.6ULAE 3.5/14.3 CIIFLYSO R, I No _ Mwmbg:. WW HISTORIC 'IOLLYWOOD CURB APPROACH DETAILS RUNOFF DELINEATION AND FLOWS gEDaom rMl aaO leSaln AN[ CURB , 4VTTEP,4H4 SIDEWALK .. Lcte;BPTEBBER�g1 I„ w, ---- - _ CLINTTITLE SHEAR ENGINEERING CORPORATION DRAINAGE PLAN meat M. meatAND sxeo ern. ; or -- a' `— [I d a Er"ke --9X€..... LBON 6 RUTH HETHERINGTGH 4836 so. COLLEGE AVE, suite 12. Eoar COLLINS, coLORAoo 615-627 COWAN STREET APARTMENTSOlt -- - knew S, Scale 10: 20r 4bPe.no—._ BIBB PHONE: 303 226-533d 303) 226-4451 FORT COLLINS, COLORADO OML WYTAI- IWrti. MP M titers M,MM, I Inw,,Mun�In uM M,n • M, Mlil Mbu r u i4Oscar M oudiford me witch rtueM1l wW. n.Mlu MLrAM curl no bottomwith 4 OPrw M ml M ntur by OPr nM eN•IlrMn l Ad Ambal k 14 14v of Fort LL w mM1.lort Lo1 am Ad wow, ad Y Q. P. MXulinM nt r%Ml nam, a Mora xminaw...e.•w ad Mik �wi.. o ..letter mil.M ..M III ntnr Mb t ail" AsImatch do Am ib.Me "A "^ .b . I been P 11 MAP to of. i a,AIlln.n. r:�MMIRM.Mwn CDY AND TO ON I 0Mimplied MIInM ahb Ma. MILM AM.W O[ 1a41n u1n arts. vw lm OarlaaMI AM,M •b In.b n MMAMPMMMm l.nMrl rim, se O[F.Oltiwtrue to Ad Vin.• aPartial M Pasurl Fir, 1MFAI Q[nano nAvb x.n. mb Promise Ia net, QPierce. uablu b, terorn, ne. 11 Paul ..�i b•MA.... MA Am, WIMIMM. of MMNIM. QeM ind,olibwbe P IMMIustion MCI. MAY.M. Imadvalmor reacted Combat Monsanto wall be MPI,M Li .bM• an M ref the 1111 .IM foe Dr. Am"as W, QE.Milamp. vn I tw C.n N 9 rA ITTREET l V Pis , of of �r .. y Or I m :As P7 P 4 11 Y , so! -1i PP LAUREL ry ®n. n — i 13.55*.L� _� "g t +L'm.�'vR'..x,n.m.... cs0 o nito l4Fp 6°S'$t �ra`°"g�Ly.z,� IM Pool] My w°°iian`• "'"' I,M ..1 e..el� �r 1``ji "�.,..� nIrrationalism of the pit,, n.f.. b. 1.DireaA bAua..ast _ M M.. L 6l S1 n F J w..M•tthat.n. Ca..Mr..•.l nm,M•loar • w�WtSamets More tire LIP, us. Let .. rr.�rin. At l4M,b,w Ad yMAM 0 the mator, mums. Li i,r VICINITY MAP duties ME OPP"" by too Compiler ,eta inn •r, trn M mp,w . of DI.nCar of EMIM IM. _ car a Rob auas, canM66 '""M And OPC..MMI.DA; nMI i ! t, l IIts„u•ems UTILITY PLAN APPROVAL o.v. ,Permit . ............ .n .. ,., ........ r.b.a.P Fromp .M•e•e.Mmrmn.tilities. •mbxw shelf b„rorvule in v 7. Friday to lammarmcourt C4 bay ro.stoo,o, AL, diameter MAIL law l ..For, Pwr APPROVED!4. The "em", Arm AM prepared LIM, pipe,, by Mail.. MdAw Mail w DNA tit, I....rrr. I oe=rarnt bah -ids, M) report di w¢n. Am, 11 CLUDKED A. Me" a e.w report .s at M M ,rids , mw un.ry DATE aw", 1, refer to the Credits ad DrAlMi Play, IIIIwdM MAY trip Or ...... ee.. vnO Iau r.0 w f,h a sort [o!I n 5b,.n0�nlm'wN`ma nr•N. Im Y M. ,fi nwnrilltin b !b tab. n • tin uvnerevt of an rontrmtb. beat ,If Mint traffic our bnMYm, 01 ub "I'Mi A mF Ids nP rare ne MAMM, f m bent trip ro.uzbr J,ll mr4t w fit, a art ur yin n rvr-.nunny .mt•i•M I. wn nett. M nnmi a DAM r4n Ir w Director Calif.. stren oto tar. * `� n .re.ill !•rernilr r•M.<or nlwY W other perGmf oralmr in of od.4 all A ,Nil .a! Palm w ..Tim, .w M .an,n tna. m. •t ff tM n w m.bnbr: Ism,, it w ,ri.mw __ ............. _ rwt of •n am rmnMbillh. ,ewn w traffic Mn N,nIS. does en4aler t1110• Man kr W ................. �e um, Mn..l. M nwM.t to .,btull w nip n .naM. •'""n CNECEEO BY TM amRi wxrc unnr DLn doMb 9. Ali w,a Ann shall be ,a Prim b ^ YMbl nem nm .r mn .[ALMA of ,w1Mn nerwemit. n fal Me CREDITS BY' PwR.m as REVISIONS Dale B.EPTEMBER 1661 Dm.n CP CYExi T'Tu JECT No. ooA _ __ SHEAR ggOMEERING CORPQPATjON GRADING, DRAINAGE & IMPROVEMENTS PLAN fT xD.o Field Boo, Died BWB LEON • RUTN HETHERINGTON' 4836 so. COLLEGE AVE, SUITE 12, FORT COLLINS, COLORADO 615-627 COWAN ST. APARTMENTS Pr 1259-0 1 01 xD 2rs - Scme_ 1s: ]OP ApproveO BWB PHONE: (303) 226-5334 303) 226-1A51 FORT COLLINS, COLORADO