Loading...
HomeMy WebLinkAboutDrainage Reports - 12/01/1987FINAL DRAINAGE REPORT FOR CHAPARRAL P.U.D. FORT COLLINS, COLORADO PREPARED FOR: PROGRESSIVE LIVING STRUCTURES PREPARED BY: SHEAR ENGINEERING CORPORATION DECEMBER, 1987 PROJECT NO: 1005-5-86 4431 Hollyhock, Ft. Collins, CO 80526 (303) 226-5334 DRAINAGE REPORT APPROVAL SHEET City of Fort Collins, Colorado. PROJECT: Chaparral P.U.D. LOCATION: Shields Street and Casa Grande Boulevard. "This Final Drainage Report for Chaparral P.U.D. in the City of Fort Collins, Colorado is hereby approved by the City of Fort Collins STORM WATER UTILITY" Approved by: Storm Water Utility Revision: Description: NOTES: Date: Approved: Date: 1.) This copy of the final drainage report will be considered the. approved "final" drainage report, only if this sheet is signed and dated by a representative of the City of Fort Collins Storm Water Utility. 2.) The latest approved revision to the final drainage report will be as found in the City of Fort Collins files. O y"'- - OJ .1 NC 1At�Q 0 r .'YN 2,v� -} rY Y! {. 1. ,� `'Ir T� •$l�j O.F�FOEPO O3'1r��tim= `;NA1tIT P , aywl�+rni,4WIND 0cCrTJ X'ttSpARBOROUGH2 DR 0aiCf6WnrVt kK`i.•Fhtiirp� +l rti,��arj.iail}r.yT, yl�f"+e+wo"6.�•. w,-.,vzoy!� f. a�.�. GERMA Er • c A VE F�QGc 4 P,� E . �.y rul:,.`l,,+; nl' r. „b•,.. h. rt �i•.t.. '�tm � I Gar¢ I' S1�.( /AAOA + 1-y, ^�, �h.��d.y r•�. l 'L,,I�C?'�'l�SaC I. wuiG .DR ,�dA• i '" GO QO ., fSEQQ ,' ( a•+f vx C,y...v tr' : "'M���j tl' � t?'7 ., ,.., r. ppt. O�XTOA J 4.�0 a SNP QO I100 WIKE ;�'�r•«+r.....wY.rp...`,�i.`+.. ..• ��c..`.,� —o°-- --- ate. o �.. Ho k Q I I t' ,HAVEN LI HTFO 7 0� yW1NCHE TER DR i py ¢ HANOV R GLEN ;• (',DA LN °O I I C I WO �� AGON�yHEEC OR y) i TUN �HA$TS1rNGk:t0Ra;;.yr a iytaEE a I I y I j FREM N7 �¢0. �w zi, , POWDERHORN D�j, tl L r r y! W ' t r 1_ 40 x ¢ a DR . II� • 'I •,, ! AG„ I �CgER LAT >I WAGjO Wj1EEL' .J ¢• ( GE o i F,Oq cti Q �ai■iNUL pp I I O ¢ 20 �1 i QQ A. C' �_..^ i ...� w S.T... O wy W , t '0 i Q. � SMAN IE4G1 n RY ¢r . �! +� . oi�,¢./�,tx,jl DR': 2 m i F( EfA'•!�p g .•. p y�__O T yQL� z �14 J OQ z C I W.�" Y . O,�j� <.r NIOHTHAWtt 1 I {�IwN b U `w. e w0 ¢ Iiocky�M.lo.O LOw��u4. p x Tq1tj'{1kR uu� I D■ . 6LV$1 V•� ?LINE D l� 8 ¢ Q C m i hr- < ,o9y ,� i d �u O IIoN p ror ¢ I �d 7--r I m O ! /yti H.S. o +• s. O CI) o'c ` DFyyf[�SE; 'SSWALCOW._:.~_ . r-'w! -. -+. _ t._ >' NCO KINNISON -.it i o w.... _>.AD'' y' f 5 2.. I UUct �� • ■r■ goS O �• F. Y' i wl- k q1 OU•Ll CT S` DR>;: 1=F I ` W h o a iy ; I p74 ru¢,. pBOLINK n j tlUX 2 BL D + O' ' ,' Ni -- .` ST/,�Lth(AM Oirr y ¢NEZ V.4. k.,- B�pP;J C h pW L. 1.1 i 4i 7I a+'BEDFORDyyI <y�PERC Y o-_.. ��1G�G O7 ' ¢ A dd Ctu�i r•y O' z c I TNpP .e.F �'1 .._a.' W.` ARDINAL U SHIRE CIR. '� CT t mG U <I w z �! DP . �iF .y ?r 'BC . I, � .21. 2 x•+ Old J` Q1I XEAGLE CJ�c �RE 9 CT i' q CA iiTIN .I y y o x C v Cr FSr DR pT6 Y:Ctr'. OJI I 2' I�OSCT y [.JI.. Jb%i DR "y! Wit FRO 4',yLIVERPOd' 2V �•P 01�' S >n" ti+ . t}JUATICf TIE.0 09s;' � ro9cbn t� �iy y a y� CO�00 i y. Aoa �0 ' A. C EQ t 1 N� J" SITE w JANE. i; ICMaQ rnAo+>0,N Q j _.. . z ST ? CC04ONYCT ?y 1a ' wo O w . o' 1 t y w nO/YyIJNN q ti ZAABRA�--•'KAVVE �,r•o . r.FLlD&Wr Rr.HC LOOK z ' DR � ptd :BO�iIAVf 2 Cilf 4> c u°�v CRE pEQIP I; Oil ,■ 09 E'7 r O N0Y 'P UjJA� AN-k 501 I I ID, 'r (� • p0U A01 OivADb/�VE a t" ' s Al , i I I f t3 r VOAmol 4 DE}JNISONsr FW,.� sli i W I I i t z■ Z i■ ■■ rr MlCH/E��VtOtV AVE BOULDEAW a FLW IR CT !� o r PEDDLE 7ou ¢Nr Q w� a 2Oq• 5 m �., COLS �.WEStF!l;LD';:+I y■ p C9 ¢VA4 -WY I I8 f q' U ;� U W= ��sAucsounr`¢,p.>� �t DOARDD A CL:1 i f �, 3 k O WABq t o q a..• ■ N. B TTE O x S y m z w ¢� ST r +- 2. O .w.. ■ uii■■a■wf■■�■ ASS U N"+O I RE o W�eSTAAL/N w0: C9,Qo O tC ..�UZ=i FLA1NS CT i' ST ¢ ¢. O .-• Q3 w4. ,cJ WR � 2 TR UTM K EMA4LLINOp££a Oot¢•�BEAa CIK �p+G. p HR HEIR K N S� DEER'. C?�Dn►µ G OMOUNFAIN DA J S zq q . , LNG g Kfr LA K KAWK CT YE DR i p STONE �iwl �`U.Si'.. Lti/ , e-4uNjJ�yC: Q AWGDt�D_-,...• x' e6N6 1l1AR C rI I_. 2 ¢ •. ... r. rr.rru■■■r■■r!. _ ■intro• rr■.. ■r■■ ■ra.r� 3 T. �...-. " m.L.. VICINITY MAP No Scale 1 I GENERAL LOCATION AND DESCRIPTION: Chaparral P.U.D. is a 10.11 acre tract located in the Southeast quarter of Section 27, UN, R69W of the 6th P.M., in the City of Ft. Collins, Colorado. More specifically, Chaparral P.U.D. is located at the Southwest corner. of the intersection of Shields Street and Casa Grande Boulevard. It is the last portion of the original Wagon Wheel Subdivision, currently being a replat of Tract 3, Tract 4, a portion of Tract i and a portion of the Laredo Lane R.O.W. of Casa Grande P.U.D. Casa Grande P.U.D. was a replat of all of Wagon Wheel Filing No. 3. DRAINAGE BASINS AND SUBBASINS: Chaparral P.U.D. is a part of the latest revised Master Drainage Plan for Wagon Wheel Subdivision Filings 1,2 and 3 (latest revision date 5/20/81). Chaparral P.U.D., Casa Grande P:U.D, and Wagon Wheel Subdivision Filings 1 and 2 are a part of the City of Fort Collins Spring Creek Basin except for a small southerly portion of Chaparral P.U.D. and a small easterly portion of Tract 1 of Casa Grande P.U.D. which are contained in the City of Fort Collins Foothills Basin (Please refer to the Drainage Exhibit in Appendix, Section A-4). A detention pond will be provided on the Chaparral P.U.D. site to meet the detention requirements for approximately 31 acres of upstream development which includes a portion of Wagon Wheel Filing No. 2, most of Casa Grande P.U.D. and most of Chaparral P.U.D. This remains consistent with the latest revision to the Wagon Wheel Master Drainage Plan. An 18" RCP storm sewer which runs northerly in Lymen Street to the North Wagon Wheel Subdivision detention pond will be utilized as the detention pond outlet for Chaparral P.U.D. This is also consistent with the latest revision to the Wagon Wheel Master Drainage Plan. The 18" RCP dictates the maximum allowable release from the detention pond. This in turn dictates the required detention pond size for the contributing area involved. DRAINAGE DESIGN CRITERIA: The drainage design for Chaparral P.U.D. was simply a continuation of the drainage design for a portion of Wagon Wheel Filing No. 2 and revisions to the drainage design for Wagon Wheel Filing No. 3 by,Melody Construction Company. Flows to design points upstream from Chaparral P.U.D. as calculated by Melody Construction Company were taken from the final drainage reports for Wagon Wheel Filing No. 2 and Filing No. 3. The rational method for determining peak flows at concentration (design) points was used in the Wagon Wheel reports and was continued for the drainage analysis of Chaparral P.U.D. The cumulative runoff method (Mass Curve) for determining detention requirements was used. The pond discharge was dictated by the existing 18" RCP storm sewer previously discussed. Because some of the information contained in the Wagon Wheel reports and on the Wagon Wheel Master Drainage Plan was unclear, several upstream drainage situations were analyzed. For example, determining proportions of major storm flows to each street at all Casa Grande Boulevard intersections. Section A-3 of the Appendix illustrates several intersection situations according to the Wagon Wheel Subdivision G construction drawings for Filings 1 and 2. These help visualize the drainage effects at intersections and confirm proportions of flows to each street. The information in Section A-3 of the Appendix is for reference only and does not intend to guarantee the apparent major storm flows indicated in the Wagon Wheel Subdivision Drainage reports prepared by Melody Construction Company. Reference should be made to the final drainage study and Master Drainage Plan for Wagon Wheel Subdivision Filing 2. Refer to the section in the report titled RECOMMENDATIONS TO THE CITY OF FORT COLLINS for further discussion concerning Casa Grande Boulevard, intersections on Casa Grande Boulevard and the effects on storm drainage of future street maintenance to Casa Grande Boulevard. Because of the lack of information found in City files pertaining to the 16" RCP in Lymen Street, an amended overall storm sewer plan for the entire Wagon Wheel Subdivision was prepared utilizing the overall storm sewer plan included in the Wagon Wheel Filing No. 2 construction plan set. The Amended storm sewer plan is found in Section A-4 of the Appendix and is for reference only. Additional figures utilized in the preparation of this drainage report are found in Section A-1 of the Appendix. DRAINAGE FACILITY DESIGN: All drainage facilities were designed to meet City of Fort Collins Storm Drainage Design Criteria. Design flows at concentration points were analyzed to determine if allowable street capacities had been exceeded, to determine required inlet sizes and determine appropriate storm sewer sizes. Storm sewer design calculations are found in Section A-2 of the Appendix. Inlet sizes and storm sewer pipe sizes are included. Allowable street capacity calculations can also be found in Section A-2 of the Appendix. The detention pond was designed based on the cumulative runoff method (Mass Curve). Mass Curve calculations and diagram are also found in Section A-2 of the Appendix. The maximum capacity for the existing 18" RCP storm sewer in Lymen Street was used in final volume calculations. The capacity determined and used in this report is 6.6 cfs. CONCLUSIONS: A storm sewer system is provided from. the detention pond, through Chaparral P.U.D. This ties into an existing storm sewer which was installed in Laredo Lane with Casa Grande P.U.D. and plugged at its outlet (See Drainage Exhibit). The existing 24" RCP in Casa Grande Boulevard, which was originally installed with the development of Wagon Wheel Subdivision Filing 1, was a part of the Wagon Wheel Master Drainage Plan when the outlet from the proposed detention pond was designed to flow directly east, across Shields, via an 18" RCP, into the Cunningham Corners drainage system (See the Wagon Wheel Subdivision Master Drainage Plan; latest revision date, October 12, 1979; Melody Construction Company). This would have resulted in the area upstream of the pond being in the City's Foothills Drainage Basin, contrary to the defined limits of the Foothills Basin according to the Foothills Basin Master Drainage Study. The Master Drainage Plan for Wagon Wheel Subdivision was sebsequently revised to eliminate the outlet to Cunningham Corners. An 18" RCP outfall. to the north was provided which allowed the two (2) Wagon Wheel Subdivision detention ponds to function jointly. Wagon Wheel Subdivision Filing 1 construction drawings were revised to provide an 18" RCP storm sewer in Lymen Street from the southeast Wagon Wheel detention pond, which is now the Chaparral P.U.D. detention pond, to the north Wagon Wheel detention pond (See the Wagon Wheel Subdivision Master Drainage Plan; latest revision date, May 20, 1981; Melody Construction Company). The existing 18" RCP in Lymen Street was the primary design constraint for Chaparral P.U.D. relative to the area and volume of the detention pond. Flows, from 2-24" RCPs are now directed to the detention pond. With the outlet only being an 18" RCP, the detention pond will detain flows for more frequent storms, including the 2-year storm. With a maximum release of 6.6 cfs from the detention pond through the 18" storm sewer in Lymen Street and with approzimateey 31 acres of upstream contributing area to the pond, 3.5 acre-feet of storage is required. This has been provided. For storm flows in excess of those for a 100-year storm, an overflow has been provided along the east side of the detention pond. Once the detention pond has reached capacity, the flows greater than those for a 100-year storm, will overflow into Shields Street 'and enter the City's Foothills Drainage Basin system. The detention pond high water elevation is approximately 78.50 according to the stage -storage curve provided in Section A-2 of the Appendix. The pond overflow elevation was set at the approximate 100-year high water elevation of 78.50 in order not to adversely affect the existing residence on the property to the south of Chaparral P.U.D. A standard 4' sidewalk culvert will be provided "on the south side of Casa Grande Boulevard just east of the existing small inlet adjacent to the Casa Grande Boulevard-Lymen Street intersection. This sidewalk culvert is intended to intercept flows in Casa Grande Boulevard, which cannot be . handled by the existing inlet. This would be for 100-year flows and greater. These flows currently would be directed to Shields Street and the Foothills Drainage Basin due to the original design and construction of Casa Grande Boulevard. Erosion control protection has been specified in the construction drawings for Chaparral P.U.D. in the area of the detention pond. Erosion control protection is especially important at the detention pond outlet pipe. The 18" RCP storm sewer in Lymen Street has a design grade of only 0.30%, according to the design drawings for the storm sewer by Melody Construction Company. This makes the pipe susceptible to silting until the detention pond is fully established and the Chaparral development is fully completed. In order to minimize the effects of erosion on the pond outlet pipe and the storm sewer downstream, straw bales will be placed and. anchored near the detention pond outlet pipe. These bales will be placed so that the top of the bales will be at an elevation equal to or greater than. the top of the 18" RCP detention pond outlet pipe. This will allow any silting which may occur, to accumulate behind the bales. Reference is made to the construction drawings for more information concerning erosion protection. This includes temporary erosion control construction alternatives and requirements, maintenance suggestions, and notations relative to time requirements for erosion control and reseeding. All City of Fort Collins Storm Drainage Criteria have been satisfied for both the designs for the minor and major storms. RECOMMENDATIONS TO THE CITY OF FORT COLLINS: In analyzing the street design effects on storm runoff at intersections along Casa Grande Boulevard, especially for 100-year storm flows and greater, it became apparent that the final design grade of Casa Grande Boulevard, at its crown, is critical to the storm drainage design intent of Melody Construction Company for the entire Wagon Wheel Subdivision (See Section A-3 of the Appendix). A majority of storm flows at most intersections along Casa Grande Boulevard are currently intended to overtop the Casa Grande Boulevard crown at the design grade and be directed to the North Wagon Wheel detention pond during 100-year storms. 4 Street maintenance procedures, such as street overlaying, could effect the design intent of the entire development, including Chaparral P.U.D. An increase in the Casa Grande Boulevard crown grade from an asphalt overlay would effectively reduce the flows which are intended to go north, increase the flows to the east, and create a greater capacity need at the Chaparral P.U.D. detention pond. A greater volume of storm water to the Chaparral detention pond at its current design capacity, would result in a greater volume of storm water overtopping the pond overflow into Shields Street and the foothills Drainage Basin. This condition would also reduce the need for the capacity provided in the North Wagon Wheel detention pond. In order to maintain the storm drainage design intent for all of Wagon Wheel Subdivision, the City should consider in its street maintenance program, maintaining the current crown grade for a majority of Casa Grande Boulevard at all times. This would be especially critical for the length of Casa Grande Boulevard from Lymen Street to a point west of the intersection of Casa Grande Boulevard, Gatlin Street and Dudley Way. REFERENCES 1. Final Drainage Study, Wagon Wheel Subdivision; Melody Construction Company; Revision date: October, 1979. 2. Revision to Final Drainage Study, Wagon Wheel Subdivision, Third Filing; Melody Construction Company; Dated: April 3, 1981. 3. Final Drainage Report for Casa Grande P.U.D. ; Shear Engineering Corporation; Revision date: July, 1985. 4. Drainage Study for Horsetooth Commons P.U.D.; Red Peak En- gineering; Dated: January, 1987. 5. City of Fort Collins Storm Drainage Design Criteria; May, 1984. APPENDIX SECTION A-1; FIGURES FIGURE 3-1, RAINFALL INTENSITY DURATION CURVE FIGURE 5-2, NOMOGRAPH FOR CAPACITY OF CURB OPENING INLETS IN SUMPS FIGURE 18, RELATIVE VELOCITY AND FLOW IN CIRCULAR PIPE FIGURE 602, TRAVEL TIME VELOCITY FOR RATIONAL METHOD SECTION A-2; BACKUP CALCULATIONS STORM DRAINAGE SYSTEM DESIGN; 2-YEAR STORM STORM DRAINAGE SYSTEM DESIGN; 100-YEAR STORM DETENTION POND MASS CURVE CALCULATIONS DETENTION POND MASS CURVE PLOT DETENTION POND STAGE -STORAGE CURVE STREET CAPACITY CALCULATIONS; 2-YEAR STORM (LAREDO LANE) STREET CAPACITY CALCULATIONS; 100-YEAR STORM (LAREDO LANE) STREET CAPACITY CALCULATIONS; 100-YEAR STORM (CASA GRANDE BLVD.) SECTION A-3; WAGON WHEEL SUBDIVISION DRAINAGE CALCULATION AND PROPORTIONAL FLOW ANALYSIS AT CASA GRANDE BOULEVARD INTERSECTIONS DRAINAGE DETAIL; INTERSECTION OF CASA GRANDE BLVD./DUDLEY WAY/GATLIN ST. PROFILE DETAIL, DUDLEY WAY/GATLIN STREET DRAINAGE DETAIL; INTERSECTION OF CASA GRANDE BLVD./SHARPS STREET PROFILE DETAIL; SHARPS STREET AT CASA GRANDE BLVD. RUNOFF COMPUTATIONS FOR 2 YEAR STORM; WAGON WHEEL SUBDIVISION RUNOFF COMPUTATIONS FOR 100 YEAR STORM; WAGON WHEEL SUBDIVISION SECTION A-4; STUFFER ENVELOPE CHAPARRAL P.U.D. GRADING AND DRAINAGE PLAN AMENDED WAGON WHEEL SUBDIVISION OVERALL STORM SEWER PLAN Section A-1 (Appendix) No Text 1.0 .9 .8 7 1N w w u- .4 t ■ 0 _z z .3 w a O .2 12 11 10 8 10 6 w 9 w 4 �t~i 8 w 3 ��� z a - vi 2 z t ., I.0 z 6 Exomple_Part a z w 5.5 a `- - -- _ a. 0 w (D .6 �- 5 = z O z z .4 �- Z w x 4.5 z ao 3 _ w 4 L �. O 2 o 0 0 = z O o 3.5 z w z w �. a O J .1 ct ao o .08 w 3 = � O .06 Uj ow w = a: .04 _z 0: 2.5 w w 2 .15 1.5 I 1.2 a .03 F- r a F.. 3 a .02 0 a _ v t- a w .01 a L O 0 -- - -- yo a 5 4 3 2 1.5 1.0 .9 .8 .7 .6 .5 .4 .3 .25 .2 15 RE Figure 5-2 NOMOGRPAH FOR CAPACITY OF CURB OPENING INLETS IN SUMPS, DEPRESSION DEPTH 2" Adapted from Bureau of Public Roads Nomograph MAY 1984 5-10 DESIGN CRITERIA �o (1 O I FIGURE 18 FIGURES RELATIVE VELOCITY AND FLOW IN CIRCULAR PIPE FOR ANY DEPTH OF FLOW solonon Non mom Ills mom Milos mom ■ so sm on Monson soon on 0 on NONE ■EC moll C son NONNI mom Non 101111 Non soon Non 0 ,+ O O O O O O O O O MOl3 30 H1d3G 195 IT O 0 co u- O J J D u- n O O u- w J 1p LL O O Z O to X o a O x a v o . m 0 N O O S 1p x N LOVELAND FIGURE 602 STORM DRAINAGE CRITERIA MANUAL TRAVEL TIME VELOCITY FOR RATIONAL METHOD 50 30 F- 20 z w U cc a 10 ,z W a 0 5 in W Cr 3 O U 2 cc W H Q E 1 �=N0111uwAwAr ■i11iim =M0111111WII/SI MEN I FAFA����' ,/,1111// oil ONE •tea®sue®��a�e�1������������ 2 .3 .5 1• 2 3 5 10 20 VELOCITY IN FEET PER SECOND WRC. ENG. REFERENCE: 'Urban Hydrology. For Small Watersheds" Technical Release No. 55, USDA, SCS Jan. 1975. r'i1 t Section A-2 (Appendix) I.W w PI - b cc C N Eto J 1 "d �0 NIO �7 d Noo 0 � p �3- ) ujj � m � N rl Ial '2 11n� 9 1 �y 2 M r71 N O i W S d ; 43019A N N In N Q, N 6, E a 0 a SID a) U61SeQ N c' N s r 1� r sd ; 1� . F.. 100 N.. N 1 .` N SID p r In Z U61seQ — o 6 0.0 SID CO Ir U U In ,Q^ v! FjIDDdDQ - - . In O W 0 m O. UI I- - a ells Z % 9 9 3 wQ adolS — o d o 0 s;D O a AllODdDo _ul + + `' d m BIQDmoIIV ~ r ' J m W N % 9 L (� edol-S — 0 d ocu p >, a SID .; jounH �' VP to N C U01j,DWwn$ N t�(1 W S; D 3 Lp N �— jouna cV 1� Z (n SID j;Duna W W OJOD Ildl $ V t N - Q L o Z J4/'II! 11111 y tin In Ip � Q A l is Ulu; u l _ _ s�i �.1 ri a11 3 11 IP lualdlll80� d o o o 0 0 L Q, UIW U0I1DJIUBOUO3 o 0 0 ;o ewll V O •ulw A v � ad.W ' — 1 c Ulw w u_ leeJ;s a .UIW 00 ao 0 evil lelul J j; O I Z 41.Bue-1 N Q SUISDe N di 9fn 1 Q N w v c a 6, O d w O OI J m _Z Q a' Sray.vv (U sools!n3b LVvUs �� F S .4YJ11 ` J ,y9 f j c . 00 9r c 11 , r � 4 r I 0 0 1 1 1 o In-1 In o r i- ti ti q aQ N N N ,� 40 C 1 ! V Ou — r ... • �' 0 � o _ IMP :: N `��,-; 0 0 0 o d d o o b W 1 1 1 1 I S. r' r- r r s. 0 0 0 to ?` s0 0 0 o U w ' s 1 1 U jN '� "•N 33k. ip 9 Nr. I i1 4 - M — O o ri _ tD r rn m a m _ Z �q,= NT 0 N 4� N N r. !ID m.rQ E } cat 7 �1 p p LP ip 0 0 O O O Q 0 r Nc N 9 - dJ 1f N ro 9 e p N c� rA rR 4. tA An .. y O -, - 9 _ ' U. I �• •d- In r, � .. „^:' p s E. i N N 1 1 1 I s E I E C ?,, w _ j,, 1 ► ;a s N N 01 0 l0 4 3 � Y.• IA r ,a�i� . T S`Y'r%� 41 L�+OI`�IH3a 1241g — .y �.•u = s�, , . , w i y �T•' ���ja.y �ht� 2� 'y �' � 3 r � i. i•L1 �•iXt 1 3' '.0 Y 11 X kV t. Fl. - �' 73 is .�•! ft -�. _ '... W111111111111111111111111111 N �@III�� ��111■IMIIII■1 IDUJWnMM Mill Z. UQIIDJIUOO lu �Y911� IIIIII�dYYI eLLy)C�7 *P� ¢3sin3� -' y-2104M SI�tL-a3aaq C r. 4 a O } W a a E? W O a Z zi cr- 0 F- N cr 0 LL 2 0 U. J Q U a W Q _O LL �■� �mn�u�� nuuo 1111� @II 111111 � UOIIDWwn �1 IIIIIYI�II 1�1 16� 111111 HIM d'�,Pfw�Z lnror�v 4Ln1 37W 41. C-vl%. a lztt5 r Q a 0 Z W C M 0 LL r M 0 z m c CL c CL O E 0 U 0 U V) (U c .0 CT 0-0 0 cm-0 0 rn In 0 0 'Z 0-< M U a) Lit E C 0 .0 -�:E V) -FU > c cu Z;: E 0 5- Proj. No: 1005-5-86 January, 1988 SJO 4AONn8 i NOIIVWWnS sills I III 21111111 11 1 gill IBM :11111 gills 11111 11191 111111 win 119-111 11111 MEN 0 0 w (D .7-��— Ld U) CD Z- < 0, Z :Dw 0 W Z 0 0 0 cr Z� a: Z cr LL, �- w z aa woo z w cr w LLJ c r Zt n UZ) om 0' �0 zo C'n- <�- -,- z R 00 U a3 = Swo D (n 0000 I Ell IN 11 1111111 mIll 111 MINNIE 2111111111 IN! 1 Irlilil 21111 EMS MIII I 'oil AlISN31NI clig--Ili MINNIE 1111 Irk." 111111111111 mmm m. CO z a a W a _ W c) z 0, _o a Q= cr =)w- 0 p oQ c �Z 0 v0 W — � IL N 0ct Z �� JJ XallW th ~ W W O wpp 4o z v D W cr- V 3 M W�. 0 m Qo � zo 0-0 OZF-<W �cz� ¢� QQ�a� m U fn.1m �OWOm (nJOUN MEN ININ MEN IN I 'milli rm NMI I INN NOUN I ME I! MENNEN BONI IDIOM v) D Z y W �. 0 Q IL U fL W (n . 0 Z Q o0 a a= �W_ 0 CLi � 0a X UZ O v0 l- ~- F- li. Q Ocr Z Z) S `1 Li �-Ww O U p p �oZ w cr V M w V to >" m yZ am o-o OZF-a W �UU~� m0U) �OWO:D (n -1 11 00 0) M c .- N 00 N 00 �- In ? O1 lfl CO to N CO r- I� 7 00 01 O O N In O 1j l w N V) LL¢ o 0 0 0 0 0 0 0 0 U W w �' N 00 N t0 �' N 00 J Ol Ol M O M r� W M N M l!1 il .- r- �- N M _' n v a W I 00 m M m , In 00 N 00 -� .- O t0 O 00 -2 00 M O 1 w O -r t0 r� 0o m >I N o 00 00 0 Cl 0 0 0 0 N 0 I 0 0 0 0 0 0 ltl m .-- .- N M to n O I m w _r In M O N N M w00 �' O I� tD In -' M N I 00 CO 00 00 00 00 w 00 00 Q CD CD CD,O O O O O O M M M M M M M M M LL ( o 0 0 0 0 o O O o U o to w t.0 0 w 0 0 w U o 0 0 0 0 0 0 0 0 W F- o o m O o Ln o Co 0 0 Z .- *- N M �' w m N 00 I I IT 7.7 I T!. ', 11 , I !- 1 LLLL77 I II II I L I I I iI I � , ............ lk I ........... .... ........ A A I I I I �. I { iii{{{ + I� i I I i ° 11 , � I ( I 1 � i . f�A�' L I Xr 1-i'Avo IL 1 '7F FF -l"', 'FF -tv .1 it -7-r I' j7 :7 -f-T-'r , I j i. .. .... ...... 1-4 r_'l T' I i 1.4. T FT i, I T A.A., 4L. I I F.T -IJ." 1- 1, 4 J i-A J_ I 'IaLOvAllc;,&A -',&,r v (OAMV_ eL9 V.Ll QTb,S eLE: I j + +L'j" mmmWAM4Mw 17 LA A I r T7_ 4— IJ Tj ..... . . . . . ----- ----- ij - bLUkg t t y 0 0 � h ,O Oedz No.. Section A-3 (Appendix) No Text No Text Shear Engineering Corporation 4431 Hollyhock Pt. Collins, CO 80526 (303) 226-5334 IvA G1 0 o, W 0 z y N � o 0) 1 b o N . 4 9Oo 01 q b5 2 tm p, : S g. 2 g = 83.46' Z 83.00 a d o to.39 a V e O Qsp� �m=So.2sc�z p �83.Z3 p r� 8•• W G Q 'IZOZcts i CA5A VRANDE BOULEVARD SEE SHT. 7 1�/ogorr Pi'I/S79 l�rla�iS/S �LoSo �aia��/vat% No Text K I 1 � v IC4- SdA �+ A110013A N I i I I I I N9tS30 N I 11 I W LI=3A N h ? ` !1_II L� f° N91S30 SdO Al IOTdv 0 °D t t 1 1 ( I I n LM W W 1 a 3ZIS r`- /0 t� 3dOlS �D — 1 1 I I I I 9 s �► O O c O O S33 w AlIOVdVO U-) CI �j 'It 3levmol l Y r- N idols „ < a J �I Q n O s-40 ddoNna _ 1,n j CQ , Nollvwwns- cc 1n S.4o AXNu N I a3H10 I I 1 1 1 i I t 1 i S3O IJONna - P1 C 1O3a10 � o K ,1 ry 3a� aH/NI A11SN31N1 Ln 1N31OIdd30O co �i i N011Va1N33NOO !` 30 3wll L r n Sri cY n _ WIN o 3d d (D I l 1 1 r I I I L NIA J o 133)J1S W) r NJ IN 3w11 13-IN1 iT' m tr rp a r o W o I I M ry H19N31 � I SNISVe N Q L I z 0 acv ({� U Z o u to `^ W C O . 1 � � Q _ Q 2 LL. z Q Z 1— " O .. 4,vti .� a rwJ- "' A1130l3A N Sdi 1113d13A N N N nl N '1, -r 4 N _ I� J � ...'l v1 V t - �, i� K. _ �.. iJ i, • 1 � . � .. .., n U SJO A11OYdY3 J 3dois i ; , j _ _ Y �, ; Q � ZLL Seo 3-WM011Y Sd0 ddomnu 1 c-71 1 1" 1c NalvwwnsF- Sd O JJONna t, a3H10 D SdO 9 — io3alO lz �A � f�l JSN31N1 a1 O n ,1 1N310Idd303 L, v\ NOI1va1N33NOO r r m a d0 3w1 N Jr 2-2 _- C \1 F- z o 3did I t I t U. U Nlw �l a� n :� r i n •� r T c 133a1S w tz :® > a Z X ' r 3w11 131Nf — — ' r 1d I o r, — L H.LON31 �I C M \\��' �� c �� o,v to l SNISvB ul Ul v\ V\ vt — }} ,r Z Z g CS FW- _Otn V V III - VYJ Lv -, 3e- neP�sy Ciy e✓�r rd/4z.) T 1 Y• SCE dN//90F /5 / \ `.... �.. 1v OETENT/ON RWTO P 3 4 5 6 1 B ;. O 3 6' 1 e- 9 IO a l2 'g I< /] /NT IGMN Wall PI.YN0 A0 I Ie �� 510UX `60ULEVARD - 7P?V Lr QYNAfEL �\\� V/ l? M• wm•fCP - AlInw,WiG•.MVEEL"44MIS".0 / eYE L]1 6Lf 1 .{/ 1• 1 10 jjj II r/S/'W f45/N 1 P6Ae•g J3 4)2 /r 2 / T to a II I3 I< 3 xp, Lt'CFN� yB li Qf �/g'�, IO 9 1y 6 11 WI 12 12 .5. q - b. _ �6- it 24 �.v g I WI T I 13 j d �I'� 1O \ i R'ePa]Wl d.YwMMr — ' - 14 11 - 2 n� 6 - I'I SYh6 O/SM. / M In I CAYVA 8m4vq r.. Ia WI I 2 I O) 1 _ 110 5 to /• 1] W' 11 IP �_ NEL PERCE WA II i A4nhe2 L. =1 01 2] OaTAW4 CDUR/ J13 AI k to f W. �. Ie 40) 15 22 / 4 1�13 Y e `/14 I - 10 / �4YC G46/ `\I 12 z 1 II R ll. ,1 Ti I I4 13 - VI ' lb I 21 3 IP 3 13 .4 f5 �' 9 10 _._IO I ram._.. -_ ��•. 1 a j l0 � IJ _-_ i I. O r io I \' i. ` I' 1 \.� \ 1e 1a Ib I CP S n 3- Ib a Ll 9 Y 9 u 9 •3 y j 14 I - 1 Is V 19 II. I z n '/ W ° Is a 14 P 22 .T Ai ] r l6 in I I \ @@ 4 9 zb a 3 r i 12) I PrPE.wFr//•4r C/iss I! I ^__ 1 fl13 6 10 I I N [� to, b 11 8 I - 6 J Z� �] 4a'. T 4 T 5 Q - no W ES Is 19Ip� % > �i a i' aFf/./mE Shmfcm 4 3/ Iq JE,'yEI f 3 1 s ie 5 1a 14 ,yR 1e 2 /Y 1 2 �✓ S - E 1[.. 1—_J I^ _ j E//tt'gv«r%/CICf/Or/S. 3 Z4 3 z4 ]—__. zl 19 IB xn a t ./ 3. 4 4 S �2O J �. 4 16 v S s my %/ax'inrficicvr 4 20 G31�LE ® q19 y[ Cv� 1 3 1 c\ F / , zf E B rO✓ \ 1a •� �- 31 I 2 20 �il�i .� / IS I 2 P I F z9 \ mod/ , e 9 to \ 3i[E ntzi\iE or Is ♦. —. ! 1 �_��� � T w/iay xcE+zP>t IS a 1 I e elaray _ _i _ 1 3 � " q _�//'�' \ • ♦♦ j /, \ 11 �\� 14 ®I / ....\ --•- _ �— _ — .. -/.\ O \ 13aGLilA I Imo~ 5/NG[E G CH G.15/N \ 5 I161 ✓\\ �3 /(/ \ Y sEE SMEEr Ne✓/s �. WHEEL zi In z 1T T � 1, 3 way \'. 5 `�.� zo16 UP < v\ Oat J7��',{ it ' `-' ior''iit 19 / \. a0, MM[ TM1I,m 4\\ I nmi d ImT ^MMY rt for [PI W P .Y. I j4 ! l I Pe , ♦ \ I 4� I I / Is netenem to Pn..nt imam, M 1 nine %, W,mn meml 5 Wvelm 1a W 33 y ?i 3y 9r. 37 ]E. z \ T b 5 tr d i ,\ \\ rw xu•z ew. \ v \ OIICN Y\ -4Ef" 4NE lNm ura mm CY MtlmY Romevdlen Co, PrvIM newrl [m am WPanWn new. DW,,Wr, 1947 I /r-p E LYrPareNm "It ilyhmknR �r woos 9va Ft. CVIint,C08p536 UUT 22E5331 a - e Wagon weal Overall ]corm Sewer Plan Alban muctrum can 1m +••1. Y.x - .e. ro' c ..we .w.M. y mm[cT WAGON WHEEL FILING NO.2 }t ]. f w1TOVERALL STORM SEWER PLAN Mx'. JB ]L I" IDO xo /{ O!2 - xnx[o-N60fl JB YM -['Se 1. I9T r� \� 50 4 W Q 0 W f �+� V1 Fcc- W W \�FT>>r,, r"A 2 CLLLJ W cc U) \ " QIY 2h Q� Z FI F• I yA�RCP NU) J LU LU ...ao Existing Contour r ¢ CC -61- Proposed contour "Rb rz 3e ur J s 01 W VA'. Finished Ground at Building (MinimumI BASIN SA 14 f� c, �ii f\E.j d� w °':. deae ernpneea elevation / 43 CASA GRANDE�n< > BOULEVARD �FAA.�.�.� �. . -� Direction of Drainage Flow Fr-1AQ .4' RCP =,l Yi(STOP ).Ot •1-• O,vn 'I i F (]EVER% A.yam���� ¢ c Moen p-�'- d' '� -->-- Existing 6tors Sewer ROD ° - -� MY ry R_ El "e -I Proposed Storm Sewer sRt"aa --` 6 AIR }\ z` FG=BTz oP - yyP�-g\:- �., p Existing nanhole / •__.'0 34 -AAWf 75 1 e II.�4 ' Bs V e� n • • Proposed Manhole / ii•c FG. BLS:'' S 0.Ne [\4F • O 9g tl 4 O -' e Y I I. F�L =-�0\ GG. 2� 5 3 ❑ 8iia<in[ Inlet ` I FG �F 4 F6/B31 �i - s Fc82.4 / n ) ■ Proposed Inlet 'd` j\.\ U i 14 17 I ] I y2 tl �\ F vp WABS ® Concentration Point (9.enn 9hse1 Drainage Beport]) / BL 1 FG•3b.2 G-B5 FG-03b FG B i EVLVf0.T i, BS] �7( /�' q / I 1 �+ Concentration Point (Casa Grande P 0 D , Storm : BASIN' I ,,.;1 d" ey. _. _ ,�_` l K.a T'� IA 7A'Rr . A 0-1 sewer trati - FG. B1.6 /'h� �:i yl °p 13� V� rl 9 0�'r 8 �t Concentration Point (Chaparral P.0 0. ) Jew FG=85.4' G.G BB. •i� fG.=629 F G•Bbw / BASIN SA 14 Drainage Basin (Wagon Wheel Drainage Report.) % � FG-s5s BASIN ]¢ Drainage Basin (Casa crowds P. U. D.) G r L%. �y c6H I 1 ap' I� J rJ V FIb B�i. m m Drainage Basin (Chaparral P.0 D ) • 1P G-6S.1 /'660 y ? k_ GL I P S 1 w I�I LC qhc. c.G'9P..2. )E I �.� Sealy Boundary _- BASIN 1 �& R s ]� 'tD, h AA �}2 IO Denotes a of possible inundation prior to IFF..E eD g 11 U B ps 2 m yIt / h--'"R' OS overflow r NN � If I GnBb.O ti4 ar_- If -'I _ AIF£ LAN .. In '`}; i e / V B M 11�1F�0-02.8 G _.AIR 1 21 I• ���; ey �'.�_._._ gry �Q.BLb y z 9EIYf[EL \ {{{ o M 2 1 t� g CASH f;RANGf V U D FG•03.1 )� / m s < U 1 ylntometion shown hereon is based on the assumption that rmeh ,P SlAA s i style boxes are being used. If other styles are used information d..0 ey. FG. 63. FG •024 1 6: : al!' �' 6 C dhow hereon shell be modified accoxtllnely. ,i __31� I d - �z I III W 2 TOP OF FB➢NOATION elevation "M11 be the Finished Ground 00 B 2 q I eY'_1 eye TTy] 1 _ os rd I;�, a elevation plus 0.7 feet BASIN M FG'01�FG. Bb 9', \ +eSy FG•03.-I I tW 5 BgSIN '1� w� 1 p 3 FENCfIMAItR "I° , QFG 634 )I TAG ^82.1 I ° { .�' South bovnet bolt on fire hsdrent, 8evt vide oP Hickok Dr1ye, ± • V� m 1 ti 47 F.(i.. 81.b Oq p > 2FX 00 feet South of Casa Grande Boulevard. or YgF2 1'� {(g/( 1 ^ e �'I/'$a a. 1�4 �", A 123 e'°V $ �1 I 74_w 'aLPI 9 /go•' 1,w 1 - �_ Elevation 5089 21 �yr + FG`84.3 FG 83.'1 %f' T. ( 9 $ EEIsiINE SRE xYOWttEEr, gz� L e 2FG •02T 1. a 0° 151 .� ex eN uG Lplx AMC la.0 Ncus Iwmranux P X.G. ) oETE T10W / Poop 26 ,n 24-•� et�=�. °'`i H ��� e�,. Bln i anpxu •r•. 9As. E.60 i DESIRE ABOVE BE. 7.5405i 41W24.49c{s AWAD.Z ofi%ctnabf7 t:2 '6boj FG=8Sl G.k 554 FG� 9 6I' I de 3 I ek. V ' UFiS[R fL0r6 @24.40[R 41Wii.6ID{s IWEd WEEL 31®IVI6[pXl yt 2� 4 IE6.j .T epY9 10 �V• ai Y N 9Y i.18cb Ot00 5sns, L65a GFAXOE P.u.0.) Ex IAT14G b FG 821 9 ( TOTAL FLOWS: U-3912CIA; O1W 91 65cR ©Y/IB aLv I y/Ar ' e �� 62CUNNINGHAM ., _ _.�J. B�-. -'e ..� -�.� F-e • �a I CUNNINGHA Y �� etwl 14 go'13.S3 r6( P y � ar° q r �3 F.G=az.O i iqo ern"- DRIVE pswlaPco Wm xromugr. IuwFaePAL F.U.D. EXLxI BRAND, el]y(x BASIN 2 -' / BBB f o y OEBICX PoIXL 9t6[M PIFA (4PF5) '¢' @ 'CIO' 0100 �iyrprw ', e11' e'-el - WRITE WRITE 31.50 57.16 - r u er / 9•i N,3, FG'82.-T 12 143 1 1 2.NX 0.45 1." 060 8.0 C_1� `D-1 2-09 e 3.0 0.45 1.A 0.60 5.10 M1F FG•03.1 FG. 02.1 '�]EG.•02.1 j 3 3 1.5 0.45 10 0.0 2.61 • \ 1 4 4 - 1.95 0.45 1.59 0.0 A.% 19------ . _ ___ 5 5 1.75 Ods LET 0.60 e.99 O. 6 6 Od2 OAS R29 0.% O.E v V seo er _ - -� - mrY Emrs 39.0 aL6s 1 a T IERs mb• b.l cis bEJ60.) � / \ k 1 (0 BASIN - 1 /• -• _�-� To pMMi i1 W OErtXiIGV 61MM0.Y: ARE-G / _ _ TO ��NE , _ f AS A G H A NUE P.l _� 'll•' yco. Faro O ORAIIJIgl. spunEasr raw. W s[x 5. U- I 2 20sINS OXaR Wly TRACT -- 9� ` Uwplatted N CASA WEEL 51B1[Vi6BASIdlsixs uII SPtl AND Sa@' O CHAPARRAL GRANRRAL P l.O dlsa5 1 AND :, 5 2 Exa26eASC F u p .60BAGINS 1 e .., 4, s AND 6 REQUIRE sELEaSE ipn 6.60 IF, C FQB-EET ACE) ynp;^4'NC 0 REQUIRED BELLINE: W,O50 CUBIC MET 13.50 NINE FEET) / / I O - wkuxE PApVmEO: 1:5.950 clam EEsi 14.04 uAF FEET) A i GOE STATISTICS: GRSE FLATTED MA: 31.0eACRES WAGON WHEEL, 2p AIL INc - 11.ee PC0.5s CRAPARRAL P.OHO Ca9A GAXOE P.U.D. s-0.19 050.0 (6i1ARMS.o9E1 s BRUTE DEMOTION: 4854 CLOSE FEET PER aw7xzT HO OPOF FW uowTb4=IB.T� ' RAEME: 2a51N55010, Salt, SAR (WGOX WEEL, 2X0 FILINGI / BASINL OXO a15IN IT (CPW EOOHOE P,O.O.) BASINS OAS[NS 1, 2, 3, 4, 5 0.Vp 6 ,LTWPAPPAL P.O.O.) - •�•A G KEEP IS FLE0 APLOX WALL TAF[XOLT TRIED FILMS. F00. FILMS.Km 1£FEA FINAL ONPIXNLE PfPONi E0A CAMALYpE F-0.0. Ipp00 BF67¢ 9CF PSOP05t0 By OTLAT x;/Ho45ETOOTH C ATPA VO.. Man W. Shay PIE. 14ORSETOOTH COMMONS P.U.D. 0e �mw F•`••• `i` NIT WITIoNl, R CoMm, CO W h M) VALAIS JAMJPRY b, 1900 VLH .... •_ _. _.. _ ... T T r"Fi urn •g EDEiC RIGLAND SUR VEYINIO OF� CHAPARRAL P.U.D,. Bw`nr DRAINAGE EXHIBIT 8w5 .. .: 5: 662 3652 1 1