Loading...
HomeMy WebLinkAboutDrainage Reports - 02/09/1993Firial flepoil -STORM DRAINAGE REPORT AND EROSION CONTROL REPORT ENGLISH RANCH SECOND FILING INCLUDING REPLAT OF TRACT D PREPARED FOR BARTRAN AND COMPANY, INC. PREPARED BY STEWART & ASSOCIATES, INC. 103 SOUTH MELDRUM FORT COLLINS, COLORADO 80521 303/482-9331 FEBRUARY 8, 1993 STORM DRAINAGE REPORT AND EROSION CONTROL REPORT ENGLISH RANCH SECOND FILING INCLUDING REPLAT OF TRACT D SITE LOCATION The English Ranch Second Filing is a 13.2—acre residential site located immediately south of the English Ranch First Filing. The subdivision is located in the Northeast a of Section 32, Township 7 North, Range 68 West of the Sixth P.M., City of Fort Collins, County of Larimer, State of Colorado. The site lies within the Fox Meadows Drainage Basin. EXISTING CONDITIONS The site is presently an irrigated field. The drainage is from southwest to northeast, and there is an existing waste water ditch along the north side of the proposed Second Filing which picks up irrigation overflow and storm water and carries it northeast around the southerly boundary of the First Filing. This ditch will be relocated to a position along the southeasterly boundary of the Second Filing, and it will serve the same purpose. This ditch is temporary and will no longer be required after the Third Filing is developed. Storm drainage facilities were designed and constructed as part of the English Ranch First Filing. The design plans and storm drainage report for the English Ranch First Filing were prepared by Stewart & Associates, Inc. in January of 1992. These facilities, which include detention ponds, underground storm drains and curb inlet catch basins, were all designed per the City of Fort Collins Storm Drainage Criteria, and are adequate to handle storm flows from the existing First Filing, this 13.2—acre proposed Second Filing, and also from a future 16—acre filing. The total amount of detention provided for the 63—acre residential development is 7.7 acre feet. The drainage summary shown on Sheet 5 is for the entire 63—acre residential site and includes the First Filing, -this proposed 13.2—acre Second Filing, and the future 16—acre Third Filing. SECOND FILING DEVELOPED CONDITIONS Sheets 4 and 5 of this report are copies of the English Ranch Storm Drainage Master Plan. Sheet 4 shows the master plan which accompanied the First Filing. This plan shows the storm drainage facilities, sub —basins and design flows at critical points. Sheet 5 shows the presently proposed Master Plan which has been altered in the area of Sub —basins 1, 2, 3 and 4. A portion of these sub —basins along the south side of Bison Road, which is called Tract D on the plat of English Ranch Second Filing, was to be townhouses; however, Tract D is being replatted into 8 single—family lots, and the remainder of these sub —basins is to be developed as a park. The overall result of this revision, as is shown by the calculations on Sheet 7, is a reduction of storm runoff. The originally proposed catch basin on the south side of Bison Road and 150 feet west of Kingsley Drive is no longer required._ due to the revised street layout and basin configurations. A -15—inch storm drain pipe will be extended south from the southwest corner of Bison Road and Kingsley Drive. This 15—inch storm drain pipe will be extended into the park site to be used as required by future construction in the park. This pipe will be plugged until it is needed by the park. The possible 40 c.f.s. overflow from the Sunstone detention pond will be routed through the future park site to Kingsley Drive. There is a proposed swale along the north edge of the park to carry the 40 c.f.s. overflow spill from from the Sunstone English Ranch Second Filing Including Replat of Tract D Page 2 pond to Kingsley Drive. This swale will be constructed as the park develops. This 100—year additional flow of 40 c.f.s. can -be carried on the surface by Kingsley Drive without exceeding the allowable 100—year street capacity. This swale can empty into the extended 15—inch pipe which will carry minor flows and nuisance flows, but which will overflow to Kingsley Drive during major storms. The remainder of the sub —basins and development will remain exactly the same as the original master drainage plan. The net result of the storm water flows on Kingsley Drive is a reduction of flow due to the revision of 5.5 acres from residential to park site. A calculation of this flow reduction at concentration point "C", located at the southwest corner of Kingsley and Newgate, is shown on computation sheet No. 7. The storm drain to be constructed to the southwest corner of Kingsley Drive and Bison Road will carry. the 2—year storm flow, and the 100—year storm overflow will be carried on the surface -of Kingsley Drive. In all cases where 2—year storm flows and 100—year storm flows. are carried in the gutters and on the surface of streets, the flow quantities do not exceed the allowable street capacities. The Q amd Q10 flows at critical points are shown on the drainage plans at Sheets 4 and 5. he calculation of these quantities was done as a part of the drainage report for the English Ranch First Filing. Flow quantities are also shown on the attached grading, drainage and erosion control plan for the English Ranch Second Filing. The', 100=year flow overtopping of Bison at Kingsley is shown on the attached calculation sheets. The existing sideyard on Lot 8 of Fox Meadows Filing No. 2, which is just west of and adjacent to Lot 159 of the Replat of Tract D. is constructed approximately 2.5 feet too low to surface drain after Lot 159 is developed. Rather than constucting a catch basin or pipe system, Bartran & Co., Inc. will raise the grade and redo the sideyard on Lot 8 so it will drain to the front and rear with a 2% slope. Bartran & Co. will contact the owner of Lot 8 and obtain permission to perform the regrading. On all lots except for replatted Lots 152 through 159 which will drain to the front street and to the -park site in the back, it is intended to have backyards drain across the rear lot lines of adjacent lots and then along side lines of these adjacent lots to the streets. All this shall be at a minimum 2 percent slope. If it becomes impractical to accomplish this type grading and becomes necessary to drain longitudinally along rear lot lines, concrete pans must be installed along the rear lines with a minimum 0.4 percent slope. EROSION CONTROL The English Ranch Second Filing is within a moderate wind and rainfall erosion control area. Wind erosion control will be accomplished by the installation of streets and curbs and the temporary crops. Rainfall erosion will be controlled by the installation of curbs and pavement and by planting and straw mulching temporary crops on the rear portions of the lots. Silt runoff will be controlled by installing a gravel barrier at the catch basin, and by placing ,i�tO0 j,44barriers across pavement and gutters at the upper ends of streets. All 'Mi�4w..GQ � &measures shall comply with City of Fort Collins Criteria. �;,��•��G\sTERfo•:•`� 4502 Phillip I. Robinson, P.E. & L.S. OF 5H�E7 No. 3 VICINI TY MAP SCALE-1 "= 2000' E. DroRe Rood La 'oo4y e River I � O O O O E. Horseloolh Rood /sl Fi/ing � x S/TE a C K C F j 1� O U w E. Harmony Rand Y . 121 �. ! Lwue a WOE � HwL nVl MiLnJ ILLV. i1.61 fxJ`•• nrn .new bOii..w L� +` n(. •'.0 - - •nF ._ . r r`n.J I.J-JE':T .r vF n,. n/O -wS:r in. VR w vt CRO >-SEC TION OF .Ol /R ,LOW OJCRFWV OF Klr.,rr)_EJ OR. SCCTiON A -A rep.w rx.Gr n IO-^ ,n TR+<T a rorJD (µr rrnall - blimp UOYNWD/ OV[RFLOw swAL CfTV ([N I-0'Is 100 j101 N.1.+ Lb___• 2..________ C c -y yl Win_ - --------- `_____" _ -%• _ _-�._- 9-t':Arnt ) ______- - - __�.-., MN --16 r olrl a /L++T[OYIR u\ M 1 � n9 k ana:u ra,�uf graLan sx nl 1• -� - MWL: IO•S L .,LOIs. ----------- I / � � IS K y Y r...c` r Y re.C1 e / T De+: -n Lnl nux.^g'oveRrlow ,now, pON I^ [z j I ' Z M,Z IT (),TT.Ic %IMY. J IrI•e(✓ r"p T O P4HO rU IJ 6Tr w.T� •1. /^V \rD ```,• `� CY[F-[L4✓ - G6.•[,+ _Iona i.S .Y+Cr L7. AUTVIRC [/f ylry T'ON- I I I✓1/'�F D!T/, ^JT/Owl !/ p t= 22T0 s . .va z.J, • IL.<c OVIKe w.lm IL P Il, A{:4A 4 r _ _ • - '� OVea I!"p4rlur r,+• n! 0'0l/ 74AL a V Yr _. . a.e Hn'� + f l -� l�i�Ti.) an 1 w•73. i dlj� YL i II 2 _ i I rOJi ter IIOe l0, � PVAq-F 44 DR.Ir1n inner L`i.C7 Jo- 3 ✓ •o �d Tz5 ,yM .+9- LI ANi'bL FC DAD ( a ,u I .. ice'. ��>A ._ u I fT b. -�� ,-- �2 r _ - ..I Lr+i _; : O`d iCl, ,/. /,.=0---[I ILG.. Y.J. - ---�-/.�-•- \ T hµ.LY, � .n. of•4 1 \ �'. za N. 1 ` ,_ H [ I f r �� �I4= T =1 Y..- - yes ,,q_°. � / • u.c a! /r ` •� I I - :• a •� Tl lbe .H �,..W - - l 1 ^ QL-71 cra I `�t••.Turd I I 1 •. 's.O Lre r 'A w•reJu r. nr r-=~'' ,. ,a: '�� �_. .� _ •]_,.2.r, j1 - �aa•,B.LL[+•-�_. __- I I � i I MIINb0 GiUMMAt?Y II ii .\ 0A 1�•r+r 1l[ L / J /I\ "till ' ,I I Ak�A G3 ALKWr oJi `a dl '4.: wl+k{r ra �'c J�IC 3.L/ �• _ \ I 00� 1 l / I.li �I T i I :OWNk K•Lr I Z Y. u 1 i " w a / i /�ul'4�•]i ---'xs �� ! �/ �'�.'1 .C� .e `Yi • _ `71 bA+,lll eoL r♦ � I_ 1L I I I I 1 7Y/VYuizrov 'e O, wo I `� 4� �21 a � � �•S.s n 7���/ � //1 `/ a'/ ; Izl 1 / I V w lz �� e? al' AKEA da o.o H� :• / _ i ,AdcYlA II /^ Ye PWOW. Q¢.YR 1 ern y.e,JL I I"a IOOI I �WGLOI'E{1 4LY'K-99.D GA'9 a r wa !� i zi 71 /" % J/ / _ l / l Pi•VF Vdr6D rf IOYk-G9.1 LMb I O J_ / _ �i, / / ('WL'VD4FA ¢Im YK-156.9 KH I U P 4L 4 ' L1 / N1. , �/ I rJ ,�/ l / Y Q uI I a' L' -✓/ 7, '.M / b.rn Ac• -dui- ._-�- _ / / ti 2 I 0 o ce • + _ _ v /o/. P / CY'iWlillkl 0'0I012-1.61 AL ¢'I'. I . PL` +' - my / Lf,..:rl.< .r/ '7-FL / �0r / DF�I$NiIW�'i'KMOGG'1.'10 AG Ti•. F A AL / / srpP\n T I �t4 A1� � r � � -• 0. i � - - -' - _ aLP' / E / ' � Q b ro-:nYma uam. r ` Ifj _ wtio1� ,4 I X ^ r�O�2w I a. orF..r+ nwwrowc l I RIOATTON WA5 2 > w•. 2 / /I / '1 I sa+x[/a+n yl„r nrO+Lnm n: R.+e "It,Q+yyyry Ls • ' r `. rrwu a a../ / `� �r+j"i:l�v rliiLirw ^�.. I. i•r 11 _ cs. Lh ``•`1 �' , '19 I f' KINI • / / / ygIV •�+1I •u'ab On.- +tM.l. `�� I " ' `''� I� Iu I I •; r1 /' 200- �dLMDALir rL..i'4: „r / } / / �o- 42J / / ♦a / /� eorrx .... ....._ a / � � serf .`... +l11.la Ir IJ IJ Iwl,l of wl D_ _-.-.._...._.... 1Y _ - ,^4 G011ff-�L e��_'� � ; / ,i�iwor , .mrinL[�.inuggi[ -- • ei...,• Sr ..�"--- -_ ; �2 P`w? , .I I n � nE .G•' a� ^�^i'.IY i L- � _^` � - (/Z __.. _ \ 2.0 LIa. u I _ -- L / / }. / j 74 / P / / ii,i ir.w� r' •I+I.. / mn sour � `- � S9' �A/rGMBtj' K- ' ' , yy pjl F \ � a -a.• �a 1 tl • I _ - `' - - ' I I - I C... i �? �OR , / am., � ` _ I •iMr,i� Ll. © y. / {..-6AFIl) { 6aUN0 I I ! ' I I to- wro / mii'u - - - - ^I• --- % 1` -J.4 cci# \\ I I I / +4 o / r .�.. �ra'•� O :Qlw.efJLr ; I A9104 ilk ) --- 11.0 biP I Yloo s.,q � /OD ✓r L.T _I I � ✓- I 1 I Iw/ .c _._. III �• /I.I.� -} Ire -Gilt I �J'f• \- - --_ .__•.� I pwMni...m. turn NNl+,lrl. yi'--- ---- - - -- - ---- - � - -- ---_-- _airoaktsuKY DR)Y�L-d -_ __ LT'r. "li.�n I _ - II-+'r / .•v..+rl..,ln I e, .T cfy�,L L.144 •e 0"'1 _-__�I 1• _-----_. _. _-- �li ^'wiinrr ry _II Tn-_,fT 5wr'LL i• 1 IAR6A 41n �(1oo•I Sq'4 :.1 QIwa,20Ki II, • .0 a.V. (•r�J.'y`L^ Lr ��y� ]2 I+I.T [G+ I . I ...-......_......-..__--__._....�..._._-......_. r Cn[Tf pJC aiL✓J 50A I I ''rJ+•2a.ii'` I r'/' - I{f1 O..Y eET Jlfwl L¢Ti I c{I i I II lug",n: r.M.O llllnrala •I ' 1.4ZAL �i •T' TI AICLAI rwlunanuma nnma I ' i/,.. I I N,rMn.w`rJ LOTJ wrE an w+nm +rnwun nnarar morn a LrLr 1\ I r I 4. AL o f �I I I,.+.-r E r c..r Js.. rr-..r/.• Yevu.L:lrn - r, • I i Ail '0 sd WIN r w1 ,a it I I AIt�A 3 Rz Its or« • le, P4. Qra 4.1 ore la l e (- / I I 1 lip 14 I I 10. L9 AL 9I 1 � { I r �- \w 6A%IFJ 15004pAKY r'la°- \1 L26eND - I ' d '� ER05ION CONTROL NOTE5: . -----_ .2n Exishxo CO.O.vr '' `� S �� 1. All erosion control procedures .+hall comply with the C', of Fort CelJrns 2rafion Cenh,l D,,iyn Criteria. 5. straw bale dikes small De placed or the vpper (south) end of !I°r /tlnysler Dh Rochdale Or, Dromler De ee Finnn co..fw/ ! L n 2. me contractor shod apply labor and equipment to clean off all debris and mod r g.tred ante the concrete j.Her on each of end paved aft refs, 7hn Ihau be done or Me end of each war+, day. L Letter or credit to rbmain active thro✓9h phase IL con,truction. 3. Ihatperr of Arras 5, L end7 lying north of the vrig.tion waste voter drain ditch is phase If $vbbosm Bound.,,[ NA- +o• •uuI• eonstrvch'an and will be dr/./and form/ng until develap.nenf occ✓rs, and rhat Parr ef' hrface ,. _ ,eiee Guier Area! 112, ], f, S10, lI, li,lh lh /3 and lL //inj a¢vthof the Irrigation waste I.fe,drain difch flow �� f� CALLD-, I is propposed f.fvre aubdlvis ran fillnJI and wlll be Irrigated forming unto) deve)apmenf omvrs. for both dry/and and im9ofed fields. o.. z.l <Jr O Q.0. ar1 Concen{ro+ion Point '+ - 2'ro'7s taus •rnu St✓oble to remain winter wind erosion control on f: Sfmw bale sed.m¢nt filters shall be insta )lad around open .form pipe ends a} catch basin v;n,e ■ ao ' /scat/ens until the concrete catch Da,lm art,.narr.cfeLlr at which $ ravel sedi.eni .. filters ,hall be intoned at Me concrete catch ba,ins. i A I NOTE: SECOND GILING 15 C/,055 HATCHED � SHpIp EDJ � zD Pinish C.f ur . Subbos/n Dwndory -� .. � `� - 3ur�oc� flout -• y • �••I �/ OUP 118�f1 Conc ln/fa+iOn lolol• ci l •-I 7h } I 0 COMPUTATIONS-. Stewart & Associates, Inc. 103S.MELDRU/AsT, Ft. Collins, CO 80521 (303) 482.9331 By: Date O 2 Z Client: Oct Lo"'\ � cr.". 1/)C, Sheet No. of Chkd By: —Date— Project: �:q e, Subject-7 IVI-LOn 0 (./b _4-." Q 5 1- Tr ,a _7� C) I Z .z I J 1.0 I . _18W, (10 ty ii .150 e 1w 41 C �Y II 25 rrp. 3. ZJI ot, `` 5"! [3�7c all 0. (0 II YN [� 4-' lal -'j3 I//! ate' 00 f-_7 3 2-' C_- 1 ! � ( j� I �� i , � i i. i S (��JCw 5 I n � 3; I j i � i i. j I i I E, i i � I � i � i TE, TV 14..) F_t� C 0.: 7 verl P11, fir; L zi, + t ku!_ -F 2,0.. + C I A: 25.)(f, 2�:�) 74 q-0 S' rl A R UAjor --f 106) . i i i j B L �� I_ i -F' +7, J i 13, 4 V5' I �le{ 6 .5 0+ STEWART&SSOCIATES 103 S. MEL9 DRUM , FORT COLLINS, CO 80521 Consulting Engineers and Surveyors By: 1 T z Date: Client: Sheet No. Z of Project: Epinal Subject: �eu)ise- Flows alon5 /-tf'ncislez a-' Alew9a'fe �riujjnG%` ��O�i �Uon {'i 7,JeS 1'O►h 'Fir'+ FlinS EGc' leul �e lia�S = VV bo-' 8. 1 Cos Plus Rossi+le' Ju7s�o.n�.: Pon T14 LA 40 J-s = 75 � {s j - /-?CVISeJ pav tuoJ)bef de✓e�G/�M('+� 'o�' per�f Sire /4f ll, q7 ac to�aI iI G = (3. e'o a. 5 t (Z • �o�(0:.� + 5. 911C0.2� ^= 0.36 ^V 70 --. co7 ) i I 1=40 ¢.&+4- =4�nr, r�OUy =3�n ti ��)�Z=I U.3vGJ6.L0S(U.7)!=i Gi1-IT'S (,ill becar,irJ6y zi'ircp) t>(I00 = G�GI/3 �%.2C��U.3� .ST�i1L77) = ZU,2. cS 440 = 60.'z -. T o yr..lfie�j/�e iw'i�� '�t' r�wee� FJow ill be reC(LI �ror. 75..! ��S' fo: �0.2 �.�r I bec.ivfe lol rk . .S jE FAre 5ui�er flow iq {(i'nSs/� a� s01/fti I aF Se-(fe, e( Fill. i �✓ts� S1�e — ,4 ; 1.43i/9c I L = SDU •pve�lc�L iry ark � S =� p, ? � j � I � I i 1 ; ! t 34'ri %LIOG^ Z9M�k 0.7Y�i Q� C = /�q (0.39)i /. 3 U.7 x/. C3) c �7r The va., �iC1 r� inch a jn sSin 3�Park) Cslios % C�C1/3" /1.2�)�0.34)�4•Z�CI•`3� z 2.q G f IrvrIo4 Zva!ft iel+ 'Fa.4 Sidi .-/-} = 4.07 ae. �r . lad P/VS , 0, /0 aU �%OM. sires L :,I10' yr %r f G = u.o�CO•S� +(o.lU�(o,g5�rni7 )I , j C�z-_ 0.7C)(3.3x0.11 0,`{'c�I` I C? IdI - G Gl A _ /2 �� 0.7` Tkesa flows 4-vrn corner 4- e4g%�S-4' oh rrSi0Gk vr-y o,ni 1 qfe i nGlv��� i svrSljaSi S �„o., �i reel l STEWART$,LSSOCIATES 10 S. ME9331 LDRUM,FAX FORT gOLLINS, CO 80521 Consulting Engineers and Surveyors By: PI R Date: 17-(9Z Client:.6c4ron Rc Co. Sheet No. 8 of Project: ngiiSecvnJ 171llhs Subject: svr-54-une dei-en1;on l /0c) ter' spi%� �_'¢0 � S 1 j ,S j O.7 (fro,, Pond, }r, ITin9sley acrossForksi�C) _ 11D 1 : ! IGc 1 Swa,�l Se G ! per' = I 1 I i i i S� = 22, S S FP = -V. l /L2 = U. 7 4- v� 04(o.�q� I - ' si��e the. �Iav✓ can's 2rea� pv� �� �lic '' Par4 aY' i J; in Ce is ]S lUD ecv� Sri�i/I ! irtiC -reeboa• ; is s�isi(G I ;is' /?o-! rteeec�. I t i ' , , I ! I . � I STEWART&ASSOCIATES Consulting Engineers and Surveyors 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 By: P1 TZ Date: 2 Z 2 Client: ri i o CO Sheet No. JL- of _ Project: _ 1511 0 1 i s h r� c� n c Sic o 1=! /r n c Subject: �%eVeiot>PC/ gcoc"-Idies q-- Cr7hc.r1 vLTLJJ I i West �uffC'r o� %i0 f;IScy ai' ,� S��o•+cr I Z j/r - Sur Gce i o• rgrn so(14 %i leff Wo fhr✓ 117 v�l 0z: 3;ion /)reb= Subbars%n#1 1.4 qG• Gi= ! O.S L = 0 overlo,d ),l„t 76ri� 5o 4er 7061 i 6-7+ 7.3_ j I w; iro•h subbasen.t' Z anA 3 will be- )n�f-cep4eI tl' S+Orn Jro?� ' 1UU y/f ' -5u e jai Frei svb�aSinJ 11 2 e,ne1 3 ,�i,.�v5 H,a+Jn�Pc'7�ej s}or- jrd1n5 i Frog shee4 6l }�e /00 yr ouecr,-4ow 07 �jsoh ' -�rar. bosinJ Z ani 3 of SvnsioP,e ovr eTlow' = 52.0 Vest � u+4-er 100 r- Pow (! N it = 52.0 t basin I z 51.V+ C.0 = 56. 0 a�f / Easy over o� Ki�Ssley ai" N,IL5'S�cah� 'F'iltR<I f�tCo.� SvbbaSrh# 461,57 14-C I I of O.'Si i L= 330 9vi'� CIA = (o,�)C3.1Y0,57) �5 i 1t:?e✓eiODG' - F'orh .Sr"C = +svh-baC(s 3 { !A.= s,9/ AC c;- ,0.zr --. I 0.7'/7 GGx1,l i I . 5.41) Qrov�- i c-FcIA '�1.2�)(u.z'�,C3.�s)('sRl) 7 I� c-�S� t 91U ��t s�iI! ( ¢7,1 1 , J UM STEWART&, SSOCIATES PH 82-933D1RF FAX 82-9380LLINS, CO 80521 Consulting Engineers and Surveyors By: Date: i 3 Z Client: 5crr~ ro' CO Sheet No. I0 of Project: F-7 6lis� a�CL, S �G��. FIiin� Subject: r,�Oye4o;2P� Plow $�an�i�iPs a� C:rillca1 �20illhS Say ' vlier !o; s4oEo-4' Fti- sVbbash 5= l.•P�f1c, ''L' I GO f aVe7- o� �lvs: 63 9v �! G = 0•S ' IG=: I���!•!'-U.S� G3U' _G9tCC=I3,v TGloo�+3s=lU•Fl ZY.3 ! 1 Goxl.6 t I i CIA + C11 ( Cf CIA �Y z>)CU.$)(�.�)(!• es) _ £ram cr ' No4f �04er .off S�rck6yey 'a4- Fasf ' - svbbas/'� (� = O.21 fic, I T 6 Io G GI/3- �(.zS)(01S 7)4-_`t' c�s i CfU557an aT cfczs' enle '4�fr/c/4 ' 7 cm Cr = 0,75 t' l Gl = 2.3G ,4� C = O. 5 L= 170 overlarl ),'h44 24.0 vl.ler I %_ /.87(1.1 -.5) 17U * �4� �l.G+ �.� = 14.f:r�i.,l rcrUo // 3 i 1 2y3 60�CL� i G1.9 = �O. 5 2.1; l - .Z` 6. 2. 3 / S+ C � C � � l i t STEWART&ASSOCIATES Consulting Engineers and Surveyors 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 By: P)17;� Date: 2 3 2 Client: QrA- Sc Co . Sheet No. 11 of Project: Eo!E�ks' l;G„ckS0cc�� FiI)n� Subject: P0 k/ G-Ilan ><i �i �J a G/ l'11Ca ✓0in/I 2s-''_Si(Aker- a� �O'C1�d e Dr- a�_ Al. �' yIF Sccoh�i Fi'1 n �S— and-`j. = 0.7S-+ l.G/ t2,30. = MM! G = U 5 L- ! /17p''pVerlo..d r1v5; 100!9v4er , i %Je-,= I•�7 ll•l- 5%+ 7p0 _/�� tC• )�/ i ih 2'�3 Tciuv-l/2c>14•SMIn S '! ; 1 1(�� i-�CG1{} ;�1;2?)�o•S�(5.9)C¢L, �i ! c�Si !! ! ' Ea s-� af�-e�� a-4' 'For c�oda�e Z7o— a it/. /t o eC.o ; Fi 1i ,. U !L = �%� u✓PrI o7q '�1uS; S6U IF 4vriP/ TG 5 1 U 540 _ 1-4-✓ r Tc 1 I� 7r _ + +,S•.2 - 14.G i z y, f Cowl, i G(ruG G�c.1//- (/.z,-)CU.z) . i•�1 c�J i I i ! r 1 I ' I i STEWART&ASSOCIATES 10 S. L RFAXFORT gOLLINS, CO80521 Consulting Engineers and Surveyors By: P 11;� Date: Z 3 Client: 3a r} r a r Sheet No. 1 Z of _ Project: n )s h IFi a o c. In .5P G a n d E d i o i- Subject: /00 '-ir -s +o r-m auerto;2pina4- L51s0.n at Yfvltsle'y I _ ! KINGSI! lot :�sLES Z, pi I j 1 1 ! 25'i FLi 8 i ! Zf 9.58 vL Z zOC%O-n I M+ n .0 76 o V 0.7 1 t� ! 1JI�OQ�/�es�G� ! l�✓e'1 !' I i i �. �o•SS%(ri-;��JC��� ��%201)�before offer -Div..! oF- tf��3s1�� /ls-SuME 0.2 01/F-Ki=LeK/ KINFsLEY! ; Mom J�ePj�z .0171? ' /q,V6- DF�TE,L�• 0.3Z i 13 - I4G j lo.ssKo,���('sr�(.14�� (0.J1)3�? j - 7r'� I /a5.S✓F i0.15 ;0Vr=(<GL(L-! eK KlAlC,-SLr% i MaY- Je -;0,7s'' jAv5 'dam o.za�i I :)3 r� .5 ! i Z �0•5-S)i0.6-7)( e) (133,5)(1L2e) = Se , f I dePo� i Ove L07�!.0.� IT;�SsI� �✓�61 y� Jvs uhc�er O.IS O_J4. eaS- . ♦�v-7. 3 max, dePover; �iso>/ j a?' ;low swa(c = o.ss EI„ ( RAINFALL PERFORMANCE STANDARD EVALUATION --------------------------------------------------------------------- PROJECT: ENG0614 TENCH SC<VJ /D F1CIAIC.- STANDARD FORM A COMPLETED BY: -------------- pl2------------------DATE_ �o z ------------------ -- -- ----- �DEVELOPED ERODIBILITY1 Asb Lsb Ssb Lb Sb PS iSUBBASIN ZONE (ac) (ft) (%) . (feet) (%) (%) /9 r ec, ------------- {-------------- {---------------------{------- �We- o� ModEP.A1F_ �¢.� Ar{ 700 ; 0.77$' 700 0.77 { 74.9 [dos } o MoDfreA-1E cj.) 9 00 0.670 `i 9 5sl�y i-0 O-Pi lG { %C. p,5 i DI/SF-A:19 { 39 75.7 t�- • 1 . EFFECTIVENESS CALCULATIONS ---------------------- ------------------- ------ ------------------ PROJECT: EtJr-L15m 9,4"Ct4 -SECOND FILING STANDARD FORM B COMPLETED 8Y: PITZ DATE: Erosion Control C-Factor P-Factor Method ------------------- Value Value Comment Bare 9roV/Ind ----------- -----' 1.00 ----------------------- 00 s}ree{s PhC t7✓/•'�}. O;OI 1.00 5r-a✓el �dlerf 1.00 0.00 sfi-o ✓ bale - filers 1.0(/ . tee�/ 7 Grop w)4{ MU(CA 0.0 �o (.00 1 I eo r' F701 jc'^ 4-� Ic Is l MAJOR PS. SUB BASIN (a) BASIN ---- ----- nsslc . ----------------------------- AREA - ---------------- (Ac) CALCULATIONS ------------ ---------------------�-=------- 4'• ------- bare o✓n� _ '/. I c� C %.gyp c r-op _ • 2, D Ac lo's) w-I-d 0,30 W4 P = U,60 �as�o 7s,7 Ti„Ss% rear75 Y- I Wed r 0.30 _ w4d 17 = 0..80 � G 77ri, DI/SF-6:1989 CONSTRUCTION SEQUENCE PROJECT: FibA S.. 15 STANDARD FORM C SEQUENCE. FOR. 1993 ONLY 'COMPLETED BY: .• plTz DATE: 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 y3- MONTH �— F ---------------T ------------- ----' OVERLOT GRADING 1 WIND EROSION CONTROL Soil Roughing.. Perimeter Barrier Additional Barriers Vegetative Methods Soil Sealant Other cur!, jwM� 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/Seal ant Temporary Seed Planting Sod Installation Nettings/Mats/Blankets Other ------------------------------------- 1 M I A �M - Y - STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 -S_I O 1 it% I f] +-------- ---� JANIAaY 1991 8-20 DESIGN CRITERIA i j j 1 i ( i ` � ' I � ( I � - i I i ' ! i � i t� 1 I I � � I l � � 1 t ! I i ' . COMPUTATIONS Stewart & Associates, Inc. 103 S. MELDRUIA Sr. Ft. Collins, CO 80521 (303) 482-9331 11fDate Client: Sheet No. /7 of Chkd By: —Date— Project: Subject PILLOW GU ER' rLOW— LQC/�L_ S— /AJJT/,,C)L_ STOz YR) r7l T r 0.5 e--4 z &Z i . L. 56 V2 1-7 570 Z i 0, 5C 01 ot C --- �17 F 17 eb P_ i -bPE' r! _1io -Z 0 to. 7 U. 6 :4 16, 3 U. Cl A41 4 8I I ` I 1 s. d �� r. ' 1 40 i 24. CA 60v zl..ff 0,16 �7. T z3' 24;3! 47.! 1z 6 4?. 7 -3 2:0. 7! C- 0, -3 6-1!rl 5. 0 A/, 0. 941a J 5;. -5 7! 0A ! qZ' 1' l 4 ! I' I 6!g'cr' y.07 : 67.0 12-7 -_'0 3 '���iIE ilill�i i !�; it '. COMPUTATIONS Stewart & Associates, Inc. 103 5; MELDRUM•st Ft. Collins, CO 80521 (303) 482-9331 By:Date Client: Sheet No.of Chkd By: Date Project: Subject ALL0W1,413LE SLOW IN LO C/c)L STREETS — 100 YR' STORM I I i¢1 i + I SI. / 1 i !ZS /ib.i i • 1 i 1. V - _ �l9 i I. I -Sir 1 Vy j e11-.. 'IZi _ ri j P - cl7 IIZ�- �� =j - nl-00.vl6) 7 t v.0 C5d =o.oze 0 �59i) 15 I!I ,oz .SLOPE IQI v F'r,l1j� �j uoWii�j cE ctO oke ! q-.3 Gfs 00751 I i ' j ' 570 ifs 1 11o8,G) i 1! U G I i j i 70.E 0. i 7r I 0.8 I O•� I IlUUi 3' �S I I ! c 1 �- %a! ! i �..:.. ! l!33•d j . U 81� ; i I06i9 �S �. 7o 0a I I i Izz.e "s 8i /. 4' ro I i 177 3! I U�B� j! i I 191 6 L�5 l .67 ! I88 • Q! i I — - !/;B. I -.__ j I S0 4- JS 1i9a.ZI d•6j c-is Z. sv ! I; i �z r. �i ! I I I I • 3. 72 3.S ! I 1 62.Z I ( S ! 170 �'�T5 I-•071 i I i i I 2S'C!•i !. ..!.. j .I_..�. ..,Ud�I p 7 1 1328 1 G,a r37 3 � �s --- 19 r-eq C/T)/ OF:: -¢:.'..INLET IN.SVI P CONDIT/ON 17 0 Q-.8 s /.33. .:.._Q =.�• _cs._..X.0.8._ c� 1.0 12 y / PQ 5 9 II 10 4 8 10 .3 1- 9 0 4 �,F 2 .7 i w of 8 w 3 �� z 1.5 a - vi 2 L /,33 .6 7 Pori w Z 1.0 .5 -- xample, Part a ._ 1.0 z 9 - - Z'-.8- w 5.5 a - - ao .8 r` w 5 = z .6 0 .7 w _ w .4 z w .4 = Z 4.5 z. ao .3 6 w L ,U_ x 4 v 0.2 0 .5 z . 0 x F- z 3 w 3.5 w w 4 ao oa "s 1 w 0 0 0 .08 25 3 x x ~o .06 3 c� c� � z w w x .04 = 2.5 x wa w 25 .2 r .03 F- a Q .02 0 .2 a x 2 � � a .15 .01 0 .15 L w 0 0 - - -- Yo a 1.5 - -- - - _ o: a_2„ IN .10 I -J- 1.2 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 EGE D' EXISTNO r011 4 LJ ` Ll— Case lv✓ mv�w_ �es verv<e •Ij Q, ci,scomp AT ON — �' sUavv. e.11 I 1Me pOitll IcrV 9 ✓r'BECOMT5 °C.XLE � a- V/LL% /uO1G Fl?My uv Lu _5. E M.0 MIM evl6 rrl Orvc.N -E w e IN ar'pa)SR iLOT � Prs19? cRNO ic�ep C6Pm RG.ep 'Z e I/Tlfi/ — in• r r� cO / EROSION CONTROL NOTE5 I. m 7s all I h (Ire mv-10) b re�e:re h�^pnm /' zeeJ Ord moleh \\\� e.:401 null m+p'e +Oe GI/ 'Y P0,4 mCnr 6. ,h'u V (s ' 3 Val co,bt, ..- dew.. /R 11 "'d o �o deb• s 44d. " 4.... ,l e o w•+.'-vh. • avi 3 I t • e. y�'s, e.ilew dew/ eHr P n - W e 70 Oa 29, V i I 1A .rn«.r a < 1 "> L�4^��l� 1 iIT t �ssf ss 01 LL . ir•�y.irv� ISi »i \-N•S III r' V is '� aim s s v 4 Tic r -- - Ills, � )55 ivo / ffcl: �I ens vn� 0 Iowa 0. 7 il -e fi"�r. Ti t , TOlT u�N vT rL Ni LO to WL ZI,511 "Wear o F_— rL2��_—_ ITT e e[ w a y xSYa sm o airOv i 5'_ v qi_ [ vwan g.c+n vone 11_ _ _ Tonga wv.1 SC ClION HOV[aiL04 _ phi( Svgt_,4FSN LOTS IOCfieI N.rs LB �� 44 -- auto--. 11 •z ! LI + ,as u ec� — a Le isle- -.u— J% nl� ,s TU n Pe pp - --- --�, us, Nose, 6 v oss N vo,vo o /fI� 1 ce vr,c,." o a e I3 "' 41 V l yl } T 10, G n 1 1P!S k� ! iN �., �, � naau ai A is on / f/,5 ;X"igy\ea IN 1 ,o b 0 of PA KM .p 3> Ix� 9° /o s" ` I p GA 14 K ,: --- t W o�o� , N6TE. Sc GO ^I '. LINC p I:9 �A7�NED -TW>riApEp a ,R , .... s vitTotten 77. a vea5It I ,:i .�I; .'ILIC I � 11 "1I - 71 Is 1 I---..►-,f.' I Y AihR�7a� �UMMdI'Y I 1- "'-lwe va ni v I IN � I I �� 1 H✓ifMG _,i.2° I �� it I NlSieelG.4 ate 1 PGe fA To —STO Ub Z � nc I MvicedzP or I°Ikers p fesot,U t,-�_ _ i t aka i IvMthal lwp�lpw—�.ea .c. r+. WI -t.a j ��ua}° ! 9✓IVµrc}l lfken46v--��o hL. melee. — i " of a got hN•i° / F, Y 19 fog go,113 ,\ �l Joe — go tor �I I LIEVEL I I I II 1 I I I II I I II � 11 I t.nnwll nO,e Emf5 co i .ui I, Lam_ J} V LEGEND not Finish en,hNr ------ sebboll owed.r/ 3acFcce FIb✓ , q...5 0 O as ({) W, Fh4��n1 Zk mq VUv ' d 1 9 Mj JOE . - soots la.i`el n... " cui _ —. —_—_ Jv _ 13Of Visit 13•