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HomeMy WebLinkAboutTIMBERLINE FARMS PUD, DIAMOND SHAMROCK CORNERSTORE - FINAL - 42-89E - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTPM �J Final Drainage and Erosion Control Study for Timberline Farms Cornerstore, P.U.D. Ft. Collins, Colorado January 22, 1996 Prepared for: Diamond Shamrock, Inc. 520 E. 56th Avenue Denver, Colorado 80216 Prepared by: Galloway, Romero & Associates 14202 E. Evans. Avenue Aurora, Colorado 80014 Attn: David L. Jones Galloway, Romero & Associates • Design Engineering Planning 14202 East Evans Avenue Aurora, CO 80014 (303) 745-7448 FAX: (303) 745-7480 January 22, 1996 This final storm drainage study and report for Timberline Farms Cornerstore P.U.D. was prepared using the City of Fort Collins Storm Drainage Design Criteria, dated May, 1984. The results of this study are reported in the enclosed report and utility plans. • David L. Jones, P.E. Galloway, Romero & Associates 14202 E. Evans Ave. Aurora, CO. 80014 (303) 745-7448 C� OPPpO REG,S F 30254 ' -09.. 7, . m Galloway, Romero & Associates Design Engineering Planning 14202 East Evans Avenue Aurora, CO 80014 (303) 745-7448 FAX: (303) 745-7480 January 22, 1996 This final erosion control plan and report for Timberline Farms Cornerstore P.U.D. was prepared using the City of Fort collins Erosion Control Reference Manual dated January, 1991. The results of this study are reported in the enclosed report and utility plans. D",/ � /- David L. Jones, P.E. Galloway, Romero & Associates is 14202 E. Evans Ave. Aurora, CO. 80014 (303) 745-7448 • OPPpO REG/s F T J L J� 30254 �90 14Z\��� �SS10NA1-E�' • C. • Table of Contents Description Pacie I. General Location and Description 1 II. Drainage Design Criteria 1 A. Regulations 1 B. Hydrological Criteria 1 III. Drainage Facility Design 1 A. General Concept and Offsite Influences 1 B. Developed Site Drainage Basins 2 IV. Erosion Control Study 3 Appendix A: Storm Drainage Vicinity Map A.1 Rainfall Intensity Duration Curve A.2 Estimate of Average Flow Velocity A.3 Runoff Computations: 10 Year Developed A.4 Runoff Computations: 10 Year Developed A.5 Runoff Computations: 100 Year Developed A.6 Runoff Computations: 100 Year Developed A.7 Composite Runoff Coefficients for Developed Basins A.8 Runoff Computations: 10 Year Historic A.9 Runoff Computations: 100 Year Historic A.10 Composite Runoff Coefficients for Historic Basins A.11 Swale Calculations A.12 Pond Volume Calculations A.13 Appendix B: Erosion Control Rainfall Performance Standards for Fort Collins B.1 Rainfall Performance Standard Evaluation B.2 Effectiveness Calculations B.3-B.6 Construction Schedule B.7 Eroision Control Cost Estimate B.8 I. General Location and Description • The Timberline Farms Cornerstore P.U.D is bounded by Timberline Road on the west, Milestone Drive on the north, and unplatted land on the east and south owned by Oak Farm Inc. c/o G.T. Land, Inc., Ft. Collins. It is located in the SW 1/4 of Section 32, Township 7 north, Range 68 West of the Sixth Principle Meridian, City of Fort Collins, Larimer County, Colorado. The Timberline Farms Cornerstore contains approximately 1.2 acres and is presently undeveloped. Native grasses presently cover the property. The topography of the site generally slopes from south to north at approximately 1.3 percent. The site does not lie within a designated flood hazard area according to the Flood Insurance Rate Map Community panel No. 080102-0006. II. Drainage Design Criteria A. Regulations The City of Fort Collins Storm Drainage Design Criteria is being used for the subject site. B. Hydrological Criteria The Rational Method for determining surface runoff was • used for the project site. The 10 year and 100 year storm event criteria were used in calculating runoff flows. Times of concentration were calculated using the overland flow equation and estimates of average flow velocity. Composite runoff coefficients were calculated for individual site basins and the overall site. Calculations are included in the Appendix A to this report. III. Drainage Facility Design A. General Concept and Offsite Influences Historically, the land for this site drains to the north past Milestone Drive, then to the east and eventually into the existing detention pond No. 1 of Sunstone 7th filing. This pond flows by swale to pond No. 2, then to the Harmony Village Mobile Home park detention pond and finally to the Sunstone regional detention pond in accordance with the Fox Meadows Basin Drainage Master Plan. The Sunstone 7th ponds are sized assuming development with a "C" of 0.85. The site receives offsite flows from the undeveloped area north of the Spring Canyon Ditch and immediately south of 0 Page 1 of 3 • the site, offsite basin OS-4. This 0.87 acre parcel's natural northerly flow. The offsite flows will be diverted northeast around the developed site until the adjacent properties are developed. Minor regrading south of the site will easily accomplish this diversion. When the adjacent property to the south is developed, runoff will be able to flow along common access drives to the Sunstone 7th detention pond. B. Developed Site Drainage Basins The site is divided into several basins. Basin A is a 0.07 acre basin along the north property line consisting of landscaping. Flows from this basin travel overland to the southern curb line of Milestone Drive. Along with offsite basin OS-1, which includes half of Milestone Drive adjacent to the subject property, the 10 and 100 year runoff of 0.70 and 1.36 cfs, respectively, flows northeast in the Milestone Drive curb to an inlet which discharges to the Sunstone 7th Filing pond no.l. This is shown at design point A. Basin B is a 0.99 acre basin consisting of the majority of the site, consisting of site paving, structure roofs, and landscaping. Along with offsite basin OS-4, consisting of paving and natural cover to the south, and offsite basin OS- • 5, consisting of paving to the east, flows of 2.33 and 5.74 cfs, for the 10 and 100 year runoff, coverage at design pond B. A temporary grass lined swale will carry these flows to the Sunstone 7th Filing Pons No. 1 across adjacent undeveloped property. The land between the site and the pond will be regraded to accommodate the combined flows of these three basins. Basin C is a 0.01 acre basin consisting of half the landscaped berm along the west property line. It drains on to the Timberline Road right-of-way and along with offsite basin OS-2, which consists of paving at the curb cut at the south end of the west property line. These two basins contribute to offsite basin OS-3, which consists of half of Timberline road adjacent to the site. These flows, 1.46 and 2.97 cfs for the 10 and 100 year storms, respectively, converge at design point C and flow north to roadside ditches orth of Milestone Drive in accordance with the Final Drainage Report for Timberline Road prepared by Northern Engineering Services, Inc., June 1994. The Sunstone 7th detention pond No. 1 has a contributory area of approximately 26 acres and when this area is fully developed, will require a detention volume of 3.8 acre feet, according, to the Master Drainage Plan. This volume is based on a runoff coefficient of 0.85. Page 2 of 3 Currently, the pond has a storage capacity of 3.1 acre • feet, according to the Sunstone Village 7th Subdivision Drainage Report. With development described in the Sunstone Village 7th subdivision P.U.D. report, the Milestone Drive Street Improvements Report and this report, approximately 10.48 acres have been developed. The remaining undeveloped 15.52 acres contribute runoff with a "C" value no greater than 0.40. The table in the appendix shows that the maximum pond volume of 2.3 acre feet does not exceed the current 3.1 acre feet available based on current and known planned development of 10.48 acres. As further development occurs south and east of Timberline Farms Cornerstore P.U.D. the pond capacity should be re-evaluated. In summary, the proposed improvements for this project are consistent with the Master Plan and previously prepared storm drainage plans. IV. Erosion Control Study It is determined from the City Reference Manual and Wind Erodibility Zone Map that the wind erodibility zone is moderate for this site. The potential exists for moderate erosion during construction and after completion of the Cornerstore improvements. Immediately after overlot grading, gravel mulch is to be placed in areas that are to • be paved, excluding building envelopes. Permanent sod or seeding with mulch is to be applied immediately after final grading of landscaped areas calling for grass. Calculations supporting erosion control measures may be found in the Appendix B. is Page 3 of 3 • Appendix A Storm Drainage 11 • LY r RLP HORSETOGTH RD. !P by rP rip 1P RLP o RLPcowNADE LAKE G.0 — — WARREN RLP !P �o rip MILESTONE rip Q' — — �dM i � Q 1 0 IL LLI> �¢ IP by RE --- bQ o Q 1p '--SITE HARMONY ROAD EF _ rp Ir"oI T waft. 7L �u �P Q 0 • VICINITY MAP dw u�no■ ••wens nsae • � aver:�a� evv■�® ■ate■�� v■�e.,m win marmommmoo 11�nl�as■■ INIMIN • � • . avr�a®® e•i■as® • uva�� • et�� lllMMMlllMll NIPPON s WIN ■ m�■■O■■nmi�®�n■�� W111111I®EWA no P-rid A • so 3Q F— ZO Z lu U4 96 Q us c C 5 V7 J C v 2 ul 3 • I f llillil i l i�l��a'' I1 77 ,I I YEiCC: '' iN t=` P=n ScCCNC ES i 1M' = CF AVERAGE F-CW VE_.CC:T't F;,-R USE Wi t rI i 1HE RA i 1CNAL F;:RMULA. i ?TICS , FRECUEN 7LY CCC::RRINC L.iNC SuRFAC !N HE CENVER RE:Z;CN. r1g�c3E'iC�: 'Jrzan Hyarotagy ;.or Smart Watarsnaos' Taainreal Raiaasa NO. , USCA. SCS :an. 1971. rn O �I O C U O I :7 O c r S 'Q m ms O 5 a'm c c Ooo O c � N o • r One i C9 0 �a'�eo3 fsl r a c - V! �1 f �A y_ — r � C C cn__v n w BAR a Y I I I I I .I c J •e Ji � � r' I � S � � O O I I I ( O 4 O 1 O O a0 O < < Q Q O Q O 0 o e � a sHFE T AA 14 5 J+ — - v LR LU � f11 v � N III S III III eJ oIIa e E 0 SN E� T A.S N N tN Q� d' • U� ..� N a o u 1; N a N o CJ C < C J O c _ _ m c _ c o Q m � h 0 A � U'VA t ' LA C J _ Q n C IT� I 1 I � 1 1 � ~ � I 4 I I w U' N Q- a u o N p +{ OI LA 1 l �= L "7 7o y�5 V N SOE�' A•Co- y `e E N C dS 1.0 - 3 W v G o L r 3 I yy o o � < Q O Q Q O O � < • O Q e SHED A.7 • Timberline Farms Cornerstore, P.U.D. Diamond Shamrock, Inc. Timberline Road & Milestone Drive Composite Runoff Coefficients for Developed Drainage Basins Basin Overall Area (Ac) Landscaped Area (Ac) Landscape Coefficient Paved Area (Ac) Paved Coefficient Roof Area (Ac) Roof Coefficient Composite Coefficient A 0.07 0.06 0.35 0.01 0.95 0 0.95 0.44 B 0.99 0.13 020 0.68 0.95 0.14 0.95 0.83 0.04 0.35 C 0.08 0.08 0.35 0 0.95 0 0.95 0.35 OS-1 0.15 0.02 0.20 0.13 0.95 0 0.95 0.85 OS-2 0.01 0 0.20 0.01 0.95 0 0.95 0.95 OS-3 0.39 0.07 0.20 0.28 0.95 0 0.95 0.75 0.04 0.35 OS-4 0.87 0.87 0.20 0 0.95 0 0.95 0.20 OS-5 0.04 0 0.20 0.04 0.95 0 0.95 0.95 Overall 2.6 1.31 0.35 1.15 0.95 0.14 0.95 0.65 SHEE7 A.8 cn cl • o —� C6 m c O c 0 ;8 m 3 — o oUv,ml O h O r�..Q. � O Onri ,I� 0 �7 J y t17 II `�y1 QI YI � cn V) O i t U N I I J 41 o s r _ %ri N • � � a � Q 6 _l M 1 I � I I I IIf _ r � a o 11 II ll °Iola dJ cm i I SHEET A,q � D C I • O O c [ d C <m m o W [ O A A x �l c 5 o Gn J I lilt- y i� N� r js Nr d� 0 N N; • a� _ it 75 5 " 0 c�► ''n � N � N i I — J G v N o O O (� V V I i I _ ( N I I I I I I o N w 9 N O lei Lf\ UN IIo lI of©I I � Q O l SPEE i A- I O • • is Timberline Farms Cornerstore, P.U.D. Diamond Shamrock, Inc. Timberline Road & Milestone Drive Composite Runoff Coefficients for Historic Basins Basin Overall Area (Ac) Landscaped Area (Ac) Landscape Coefficient Paved Area (Ac) Paved Coefficient Roof Area (Ac) Roof Coefficient Composite Coefficient A 0.01 0 0.20 0.01 0.95 0 0.95 0.95 B 1.14 1.14 0.20 0 0.95 0 0.95 0.20 OS-1 0.15 0.02 0.20 0.13 0.95 0 0.95 0.85 OS-2 0.04 0.04 0.2 0 0.95 0 0.95 0.20 OS-3 0.35 0.07 0.20 0.28 0.95 0 0.95 0.80 OS-4 0.88 0.88 0.20 0 0.95 0 0.95 0.20 Overall 2.57 2.15 0.20 0.42 0.95 0 0.95 0.32 S�Ee-, 14.11 C7 • TIMBERLINE FARMS CORNERSTORE PUD Grass Lined Swale 1:4 Side Slopes Q n 1/n S S^ .5 d A P R^ 2/3 2.82 0.06 16.67 0.01 0.10 0.66 3.06 7.44 0.55 2.92 0.06 16.67 0.01 0.10 0.67 3.14 7.52 0.56 3.01 0.06 16.67 0.01 0.10 0.68 3.21 7.61 0.56 3.10 0.06 16.67 0.01 0.10 0.69 3.28 7.69 0.57 3.20 0.06 16.67 0.01 0.10 0.70 3.36 7.77 0.57 7.32 0.06 16.67 0.01 0.10 1.02 6.20 10.41 0.71 7.48 0.06 16.67 0.01 0.10 1.03 6.30 10.49 0.71 7.64 0.06 16.67 0.01 0.10 1.04 I 6.41 10.58 0.72 7.81 0.06 16.67 0.01 0.10 1.05 6.51 10.66 0.72 7.98 0.06 16.67 0.01 0.10 1.06 6.61 10.74 0.72 < = 10 year flow < = 100 year flow SF-iE,E:T A, I Z • PROJECT: TIMBERLINE FARMS CORNERSTORE PUD LOCATION: SEC TIMBERLINE ROAD AND MILESTONE DRIVE FORT COLLINS, COLORADO Total area contributing to pond: approx 26 Acres Developed area contributing to pond 10.48 Acres Undeveloped area contributing to po 15.52 Acres 100 Year runoff coefficients For developed areas 0.85 For undeveloped areas 0.40 Onsite basins A and B along with offsite basins OS1, OS4 and OS5 contribute to Sunstone 7th Filing Detention Pond #1. TIME 100 YEAR AREA RUNOFF 1100 YEAR HISTORICAL POND VOLUME (A)*(C) (A)*(C) INTENSITY SEC/MIN VOLUME 11REASEL ER VOLUME (MIN) DEVELOPS UNDEVELOP (ACRE FT) (CFS) (ACRE F I) (ACRE FT) 5 3.908 6.208 10.00 300 1.041 12.00 0.083 0.96 10 8.908 6.208 7.30 600 1.520 12.00 0.165 1.35 15 8.908 6.208 6.00 900 1.874 12.00 0.248 1.63 20 8.908 6.208 5.20 1200 2.165 12.00 0.331 1.83 25 8.908 6.208 4.60 1500 2.394 12.00 0.413 1.98 30 8.908 6.208 4.20 1800 2.623 12.00 0.496 2.13 40 8.908 6.208 3.50 2400 2.915 12.00 0.661 2.25 50 8.908 6.208 3.00 3000 3.123 12.00 0.826 2.30 60 8.908 6.208 2.60 3600 3.248 12.00 0.992 2.26 70 8.908 6.208 2.3 4200 3.352 12.00 1.157 2.20 80 8.908 6.208 2.05 4800 3.415 12.00 1.322 2.09 90 8.908 6.208 1.55 5400 3.467 12.00 1.488 1.98 100 8.908 6.208 1.7 6000 3.540 12.00 1.653 1.89 110 8.908 6.208 1.55 6600 3.550 12.00 1.818 1.73 120 8.908 6.208 1.45 7200 3.623 12.00 1.983 1.64 130 8.908 6.208 1.33 7800 3.600 12.00 2.149 1.45 140 8.908 6.208 1.25 8400 3.644 12.00 2.314 1.33 150 8.908 6.208 1.18 9000 3,685 12.00 2.479 1.21 160 8.908 6.208 1.12 9600 3.731 12.00 2.645 1.09 170 8.908 6.208 1.1 10200 3.894 12.00 2.310 1.08 180 8.908 6.208 1.05 10800 1 3.935 12.00 1 2.975 0.96 REQUIRED POND VOLUME IS 2.30 ACRE-FEET. SUNSTONE VILLAGE 7th FILING SUBDIVISION PUD FINAL DRAINAGE REPORT BUILT -HE POND TO A VOLUME OF • 3.1 ACRE-FEET. THE POND WILL NOT REQUIREEXPANSION. < = required volume Appendix B Erosion Control • C, P-Azz Z3 1 c 1 c-c�ccc 1 , i t t Q I Q Q ti7 In to I I t.c's I CCCC.0 t t , , 1 C 1 C:C,a!IV! C: ccc + 1 I C t c c c c tts tt: t..^. �.^. IJ i tr'i ► t c 1 CCCCQCC^.CC t { t t C I Ct S! 17!C1�C1C!I +i C!IT! CC t t t I I C t ccc .-c- ccctr:tnr l 1 t t C t r�CCQCtC!C!CiCZ17CiC�G�CIC+G�Cti C�CtiG� t I N 1 CCCGCC C':CCC CGGGCCC G.^: t I I I 1 C I C r" i G Lr. td: i\ r\ ;1 r\ t C I GCC'GCC�'CC c c c c c c..^ CCGCC•CCC I t .-•. I CGCCCCG.= C.�:CCC.^_C:^.^"...^.CCr'G.^:.G.':;.....'�'CG] I 1 1 1 { C i CNC'7CtflL^.t.D11014-.tc'c..........GCq I C t C. I P•s G C• C C C C C C C C C C C t C I tGCNMcc_nLOIntntGtC GtGtC: tG6^. �C v �c r�M1M1M1M1r� t C I C I MccccccccccccccGcccc•�cGccc r , t I • t C I G C.'•1 ._. N M M G C C C LC: to t.'� t17 t.: t:. 1.,^. L. � t.^„ tC tG t_^. lL' �". 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Z 1, bEVELOFEO SAPSA15INI E4WD t a<L.1TY zoNE A,. 6 (Ac-) � �� �) C ki S 6 �•i PS � ) A MOOEILATi� 0,0? t S 10 I S in 84,00 g MODEIZATC 0, q q 2 sa 2 Z 50 2 ; "t , 7 5 G Mop�-r�, DUOS 12 33 Iz 1 33 84,83 o5-2- ; 0,01 S 3 I S 3 8a.3o 05- 4 10 3 l 1 3 Q,o.3q OS-5 j�OD�{chT� Q,oq- t25 I 125 l '15,03 • U CTIVENESS CALCULATIONS ----------------------------------------------------------------------I PROJECT:puo STANDARD FORM B COMPL_i ED BY: G5;kLu,�Aye (zoksRo � 4sscc, DATE:�W ZI,19JU Erosion Control C-Factor P-Factor Method Value Value Comment P��� N�rnS,S�o�wA�r-S 0.01 I o DARE 501L, ?LOUej 1,0 5EED1STAAW M u u.CH O, O& , v aIZA4aL. HUL r-ti o.oS 1, 0 SE t�D/5TRAuu Muv-A4 --(s s� SL,::,PEs)------ o,14-------- k o --- MAJORI PS SUB I AREA I BASINI (;) IBASINI (Ac) I CALCULATIONS - ----I------I-----i------I-------------------------------------------- I84,Oa I C�,v? IUSE SEED MuL-r-A IN LAtZDS ,&?Wei ASM = o.aco A, {W-- use G ru�E � M u LGN l a PP.�� a.�S WTfl-t = (o.aco)Co.o(v)+(o,01�(o,os) _ 010 t-p f7= (0.0(0)(I-O) T (O.oi)(I,y) = 1,00 (Q":5)utO.01) ��►� cor�s-r�.vo-i�v►�: 0fr= [I - (o.0co) (1,00)]' 100/ =--i4'/ �Le4 CO+.IST(LUG-Ro�J r�F - 11 - (0,01) (1,00)j ' io0/,'.9,i Use ;00/4¢.AS4 G=0,01 F-1.0 ----- ------- ------ ------- --------------------------------------------- Di/SF-8:1989 --=-I EST 5.3 • • EFFECTIVENESS CALCULATIONS ----------------------------------------------------------------------I PROJECT:TiMaE4. 4AJc. P4,p-k45 Go(ZNE(.STotC.E pvD STANDARD FORM B j � I COMPLETED BY: DATE:JAN Z11p1gC�, Erosion Control Method ------------- MAJORI PS BASINI (1) 17q,-►5 SUB BASIN 13 C-Factor P-Factor Value Value Comment i ------------------------------------------ f I 1 ---------------------------------------------------- AREA I (Ac) I CALCULATIONS ------ I-------------------------------------------- D,'19 I u5E eb�/tr(LAw µ UV -I+ � i;p t rc<ep Sw PES I Assam = o,a¢ Ac2�, L4Z 56eD/S14Aw M u V-H ffq- t.A.M DS CAP I u I A541= O - 1''1 Arc-K E.S use cla.4leL KuLz� tN pAvt►o� AGM c 4&r-> V5E 13A2E Sot(- tQ 6L)«.Dklj� E W/ev Loprc5 a bs - 0,14 AC42-ZS 14) �{�=�I-(o•iv�(o,9q�� loo'/.= 134/ �: 79.75; QfIra cop5^rK-brio a �e 9FF=-1I-(0,01)(1,o)]•l00%=-Iq'/, I I I i i i I ���: l.An►��AQED �fL�S f Lrbe e,-;op c=o.ot p=1,o I-------------------------------------------- ------------------------ NDI/SF-8:1989 SHE-1 5,+ • r� u r� u -------------------E_=E_TIVENESS-CALCULATIONS ----------------------------------I PROJECT:T,0&e(t U4e �AA.LuS GoQ.n�e(LST�(LE QuD STANDARD FORM B I COMPL: i ED BY: DATE:-k+ zl 1991 Col f j Erosion Control C-Factor P-Factor Method Value Value Comment ---------------------------------------------------------- ------------- MAJORI PS BASINI (;) ----- I------ 184,83 -------------- SUB I AREA BASINI (Ac) I Dom✓-2 I O.D I --------------------------------------------- CALCULATIONS -------------------------------------------- us 6 5Ei I-tr,� µU Lc-;-k Fog- 5-rez p sL.vpss ABM=ooe 1�G¢-cS cv(Liu� 60N51,1Z-YTTT0 l EFF. �I- (0.14)(i,o�].10oV, =SV 84,83 LAND4,4aPEZ Ail�S 0sc —150D (:=o,ol P=I,o LV-,6 caAV EL- KJ L---t-t w ?A)-J ED A2E;4,S A,M =o,oi 6-Pzs gel ---------------------------------------------------------------------- HOI/SF-8:I989 0 EFF-ECTIVENESS CALCULATIONS l---------------------------------------------------------------------- I PROJECT:7m&E{ uUE FA(2_ s CojLQ t-�rr�(L j--AjD STANDARD FORM B 0 COMPLETED BY: OAT':--,A0 ZIIyi`llo Erosion Control C-Factor P-Factor Method Value Value Comment ---------------------------------------------------------- ---------------------------------------------------------------------- MAJORI PS I SUB I AREA I BASINI (;) IBASINI (Ac) I CALCULATIONS -----I------ i----- I ------ I-------------------------------------------- ISa39 IUD GaAVaL MUL 44 11l PAVED ARZ•S IwTD-o = o�os I��R+►sc� e-0 0 Q.U� Cho tit 75.a31oS-S 1 IUs>:c19AvEEL kULC44 cf�i PAYcn A4,A= o,o¢ LATD -G = p. oS WTD- P= 1, o Du�.�►s� GoNS�1-cxrrto►J �joo/=�jSV. =9 ----------------------------------------------------------------------j HDI/SF-8:1989 SHEE7 13 ,(0 71"aC6 4'LI.10E FAO -MS CONsmuc=0N SEOUENcz PROJECT: F•Q•D, STANDARD FORM C CIA u-oWAY,2ak CiLo OUENC_. FOR 19 9 (0 ONLY COMPLETED BY: * ass ou s DATE: Zoe I n 4o Indicate by use of a bar line or symbols when erosion control measures will be installed. Ma,;er modifications to an approved schedule may require submitting a new schedule for approval by the City Engineer. YEAR 11996 1 MONTH I j I F- I n I A, I M I J I J I A 1-5 IN I p 1 ---------------------------- i-----------------------------------------------------------I OVERLOT GRADING iI WINO EROSION CONTROL Soil Roughing --1 Perimeter Barrier Additional Barriers Vecetative Methods Soil Sealant 1 Other I I RAINFALL EROSION CONTROL 1 STRUCTURAL: 1 Sediment Trap/Basin 1 Inlet Filters 1 Straw Barriers Silt Fence Barriers Sand Bags l Bare Soil Preparation 1 Contour Furrows i Terracing 1 Asphalt/Concrete Paving) ► —� Other ('3uiLoiwj coNsTiLuc-nook VEGETATIVE: I Permanent Seed Plantingl Mulching/Sealant 1 I Temporary Seed Plantingl i. Sod Installation Nettings/Mats/Blankets ( I Other I I ---------------------------- I -----------------------------------------------------------I STRUCTURES: INSTALLED BY MAINTAINED BY VEsc ATION/MULCHING CONTRACTOR DATE SUBMIi1ED APPROVED BY CITY OF FORT COLLINS ON 0/SF-C:1989 S-H EE`i 57 10 • FAAS Go(Lti1c(t-� DA-rE JAouaRY 2z t"l41c. rRoS Ioo Go N'TXO L G05T LSTi ►AA-ra Appa.oKiMAreL_y 2.0 Ac S WILL ePE: VtS-rug-,Eo WI OO1 Z +tS GAT( G(ZiTG��f� C CoSo l A���) C 2�0 ��-R-ES> I .5� _ l��O• °o ff-r't�i DEPOSIT GC)ST a4EA1L,Da W J '. Gt2AIJEl- H4u— �1 l-�A�l6a,.Es ArIoo� sEc.u�-rY a Epos �L.EQ u �s TH E el a EA-r— - o� '14E- 7vJc * w1 ,G-oo SNP 5.9