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HomeMy WebLinkAbout1983 Ordinance No. 017■ BY AUT HORITY OODINANCE NO . J. 7 SERLES OF 198-3 -- COUNCIL BILL NO . 19 INTRODUCED BY COUNCIL MJ:lllBER BILO AN ORDI~CI:: APPROVING AN AGREE/>'!:NI' WITH SCHOO L DI STRICT NO. 1 , ARAPAHOE COUNTY, COLORADO , GRANTING CITY OF El,K;L EWOOD , COLl',RI\DQ , AN E'ASEMENT TC USE SC HOOL PRO PERTY l-'OR II STORM WATER DETENTION /\REIi AND ESTABLIS HI NG O'n-lER REU\TED 'l'ERM.5 AND CO.JO l'l'I ONS , AND REPEIILING OODINANCE NO . 21 , SER IES OF 198 7.. WHEREIIS , the Ci t y of EngleWvod has e mbarked upon a prog r am of limiting Little Dry Cr eek t o the confines of its channel in the City of Englewood ; and WH EREIIS , the goal i s to prevent loss of public and pr ivate property to flood damag e ; and WHEREIIS , School Di stric t No. 1 , Arapahoe Co un t y , Co lorado, Englewood School s , des ires to assist in contro lling flood wa te rs in the City of Eng l ewood to protect , a mo ng o ther things , t he school tax base ; and WHEREIIS , the City of Englewood desires to coopera t e with an~ prol ect the School Bo ard; NCl-1 , THEREFORE , BE I T ORDAINED BY '!"HI:: CITY roUNCI L OF THE CITY OF ENGLEWOOD , COLORADO : Section 1. There i s hereby approved an a greement titl ed 11 1\g r eeme n t Storm Wate r De t ent i on Area " between the City of Eng l ewood , Colo r ado , a nd School District No . 1 , Arapahoe Co un t y , Colo rado , as attached hereto and inco r porated by r eference as Exh i bi t A. Section 2 . '!'he afo redesc ri bed Ag r eement g enerally prov ides a s follows : l! School 's use for ed ucati onal purpose is pararrount us e. 2) II nonexclusive easement is granted by the School Distr ict t o the City of Englewood fo r storm wa ter deten t i on ove r p roperty ownP.d by the Sc hool District and u sed fo r athl eti c purpose~. 3) The School Distric t shall revi ew a nd approve f inal plans for construction of the sto rm water de t ent ion a rea . 4) City shall save and hold harmless Schoc,1 Disc.r ict and its Board of Directo rs against a ny a n d all cla i ms aris ing f rom City 's use of the detenti on a rea . 5) City shall not use the property in a manner that creates a nuisance; construction and maintenance shall be coordinated with the Schoo l Board and shall be at City 's expense; City r ecog nizes the need for open space and shall attenpt to provide for the same along histo ric Little Dry Creek; City shall not make alterations unless approved by the School Boa rd; City shall cause no liens to attach to the property ; School 's use shall not hi nd er capacity of the storm water holding area . 6) Ci ty shall p roperly insure the property. Section 3 • There is hereby repealed Ordina,,ce No. 21 , Se ries of ~ Sec tion 4 . The Mayo r of the City of Englewood , Colorado , is hereby authorized to affix his signature to the aforedescribed Agreement fo r and in behalf of the City Council of the City of Englewood , Colo r ado , and the ex officio City Clerk-Tr easurer i s authorized to attest the same. Introduced , read in full , and passed on first reading on the 18th day o f April , 1983 . Pub l ished as a Bill for an Ordinance on the 20 th day of April, 1983. Read by title and passed on final reading on the 2nd day of May , 198 3. Published by title as Ordinance No . __ 1_7_, Se ri es of 1983 , on the 4th day of May, 1983. /s / Eu gen L. Oti s Eugene L. Otis , Mayor Attest : /s/ Gary R . Hi gbee ex officio City Clerk-Treasurer I , Gary R. Higbee , e x officio City Cle rk-'rreasurer of the City of Englewood , Colorado, hereby certify that the above and forego ing is a true , accurate and complete copy of the Ordinance pas ed on final reading and published by title as Ordinance No . l 7 , Se ri es of 1983 . -- ,'s / Gary R. 111 g bee Gary R. ,\1gbee ,.. /\G\1lllsMBN'l' l:;'l'OIIM WA·r~II Dil'l'~N'l'ION /11\i;A 'i'IIU:i /\til\~liM~Wi', mutlu or.ti antarad into thi s·-·--··---···· .. cloy of , 198_, by ar.d between SCHOOL DtH'rl11C 'l' l~O, I , ARAPAHO~ CO UN'r~, COLO i\/\DO, by an d th rough its Uooru ol' i::uucatlon, hereinafter r e ferred to as "Dis t rict," anu thu Cl'l'Y Ol•' l::NGL~W001 J , COLOR AD O, a Colorado munici pa l c orporat ion , her~l n af ter refe r red t o as 11 City,11 WI'l'Nl::SSl::'l'H WH EREAS , tho Scho ol District la tho owner of certai n re a l propert y locat ed In the Courty of Arapahoe , St r · • of Colorauo, whi c h '.• adj acent to Little Dry Cr oe k1 a ncl ~IHl::1\1::/\S , th o Ci ty desires t o const ru ct a s tor m water detention ar co as part of a ru lll le dru l nnqc projuct to pr uv ldu fu , ~ " UO-yoar floo d" p rotection from L ittl e Dr y Creek , adjoi ning the af or e said property, an d YIHl•:1 1.::AS , t he aforesaid p ro perty la s uitabl e for the c ~ns truct Ion of tho neociud s t orm wate r detention arua which i s I n t h e best interes ts of the clt lz enu of tho Dist ri ct ilnu t ile C ity b y cl im lnating ris 1, or damage to liv es and p r opert y f ro,n Linlu Ury Cree k floo dl ng1 an d I WH81\BA S , the lllstr ic~ can con ti nue tho use of tllu afo r esa id pr,part y for Its general pu rposes fo llowi ng tho reconstr ucti on ther~of to he JS d uon ~urro11tly uu a uto r1 n Willbr deten tion a r ua , and ,I WMEl\e/lS I thu City IB u publ lu bo cl y pu r,;unnt tCI c,11.:;, l'J"/ l, 32-ll-lOl et seq ,, and Is II subdivision of th e Btatu pur 1Hrn llt tu C.H.8, IY 7J, n-Ji-1011 an cl WttE~EAS 1 It Is necessary for the City to ucqulre an easement In certain property of the Dlstrlot In oonno c tlon with tho construction of tho storm wator dotontlon pond a ~ purt o[ th o drainage project, NOW, TttE~EFORE, In consideration of tho proml ,rns untl o thur good antl va lua ble con:ildurutlon, horulnort ur "l'l'oMln ,J , U,c p<irt ,~,, hereto agree as follows: l , QM.N..1..Q.~fili.'!:, II , The Di s trict hereb y gronto and conv ey o to the City a nonex cl u,lvo easeme nt for tho purpose of construction, ua o , nnd ma in t ena nce of a storm wate r detention pond upon tho Distri ct property des c ri bed as follo ws : h pa r cel o[ l a nd l ocated In the Northeast l/4 of Se ction J, Town uhlp 5 So uth, Ran ge 60 Weot of tho 6th ?.M., Ar apoho~ Cou nty, Colo r b~o , descri bed a s follows: re g l nn l ng at a po i nt on the West line of Lot JO, ~loc k 5 , '.dgg I ns Engle woo d Gardens, from which tho Northwuut cor no r of S il d Lo t J O be ars North a distance of ~.57 [oat, th ence So ut h alo ng thu Wc8t li no of l.ots JO to 25 (Inclusi ve ) said Bl oc k S a distanc e o f 174,43 feet to the North line of tha t pa r ca described In Book 1063 at pag11 264 1 thence WeHt, lJ fe et along t he North lino of that parcel de s cribed I n Book 10 63 at page 2641 thenc e South along a l i no 167 feet Eaat oC and parallel to the West li no o f tho 5out 1,eaat l/4 of t ho No rtheast l/4 of Section J a di s tance o' 425 feet, t honce 8aat 5 foet 1 the nc e Sou t h along u lino 112 fact East of anu p~ra el to t he Wost lino of said S~ l/4 N~ l/4 a d\u ta nce of 95 feet , t hence Ean t 45 feat1 thenc e Sou th 12 fout1 tha ne~ Ha st along a line 532 feat So uth of and par a lle l to t ho No rt h lin o of oald RB 1/4 ~B 1/4 a dl~ta ncu I I of HU feet, thence South 38 degr.oufl 44 ml nutuu l·:,,,,t 9'J fu et; thenco Sout h 76 <le graes 4'/ 111lnut u~ ~!lllt l lU Luut 111,n ., or less to a point on the North lino of vacat e d ~m;t l.11hl <J l1 Avenue be ing also the South line of thoau paroul u uuuur I IJ11 <i In Book 927 at page 2Y, which poin t 1 lull i :1u tout w,,,,t nl' tlHJ ~Joulhwuu c 11urnur of \;hut purc.:u l c.Ju i.;cr JIJuU in U u u lt u~~ at page 5421 thence South 4 5 feet1 tho nce East HJ,l feet pa rall el to the North line of vacated ~a s t Lehigh Av enue to a poi nt on West line of the oll t ~ in Ulock u, Ma naf l e ld Ad dition, thence North along said Wout lin o 4, foot to thu Southeast corner of that parcel descri bed In Uook 05 5 at page 5421 thence Ea st along the North line of Efl~t L£high /\v en ue 27 foot1 thence North 240,4 feot 111uro o r loss alony the line 27 feet East of and pa rallel to th o ~ast line ~ of those parcels d esc ribed i n Book 855 at page 54l and Uook 1403 a t page 41 to a point on the ~out he rly lin o of Lot J Sond ra 's Subd i v ision wh ich lies Y,61 fo ot Wu,;t of t he 1•:,i:;L lino of Lot 31 t hon c e Nort h alon g a line parullol to and ~.61 fo et West of sa id East li ne 196 faet to a poin t on tho North line o f Lot 31 the nce Northwesterly along sa id North l ine 15 ,58 fea t to the Northeast corner of that prop e rty de scribed In Book li82 at pa ge 57 9 1 then ce lforthwest e rly a ·ong th e North l ine of Lots l , 2, and 3 , Sandra's Su bd ivi s ion a dist an ce of 103 ,2 fe e t t o tho North west co rner o f Lo t l, San dro's Su bdivisi on; t hen c u No rt hwo sturl y alo ng t he Sout h l ine of th at parcel deHc ril>ou In Uool, 4"1. at page 5Y2, Arapaho e County Records a distanc e of J27 .2 feet to o point, th ence Northwesterly to a poin t on th o Sou th l in e of Lot 25, ·Block 6, Hi g gi ns Kngle~ood Gartlons , from which t he Southwo8t corn er o ~ sa id Lr,t l" buarn Wo:it 70 ,92 feot 1 th e nce Northwesterly al ong tho North li no of cn at pa rc el desc ri bed I n Book ll24 at pogo 104 Arap aho u Co un ty Records a dl atance o f 75 ,2 feat o f tho Northwest co rner of sa id Lo t 251 thence Nort hw esterly to a point on :he Eas t lin e o f Lot 23 of said Bl ock 6, from wh ic h tha Southeast corner of sa id Lot 23 bear s South a <IIHt nce o[ i ieec1 th ence Nort h,1est erly alon g the No rth lino of that p11rcol desc ribed 'n Boo k 1094 at page 600, Arap«hoe County nocordn a distance o f 132 ,85 f oo t t o a po int on tho Wo 8t lin e of Lot 22 of r aid Block 6 from whi ch the Northw es t cor'er o[ said Lo t 22 beo r s North a di s t ance o f 3 feet; t hence Nor thwes te rl/ to a poin t on th e East l in e of Lot 28, Block 5 , Higgins Enq le wood Gar de na, from which '1e Hortheast corner o f said Lot 28 bears Nort h a dist ance of 5 ,72 feet; th ance Northwester ly along the So u th line of that pa rcel descri bed In Book 1 124 a t page 103, Arapahoe Co unty Racordu , • dlntdnco of 14 5 ,0Y fout to the Poi nt of lle~l n r·i~g, Arapo hoe Count y, Co lo rn d o , I ; ~. Storm water detention area, as uaocJ In tl,J,: Agreement, shall Ile a reduction I n ·he existing elevation of tilu aforesuld (lropeny by approximately fJlK (G) to oly iltu u11 (l.ll) !'ul!t, In order to form the bottom and aides of the detention aroo, al ong I with other necessary excavation ond construction gonor all y In accordance with the attached sketch, designated ~Khlblt A, prepar ed by Mc~aughlln Wate r En gineers. It ls under st ood anu a~r ucd thut final plane for this water detention area have boen ap prov ed by th o '.l lstrlct, 2 , DURATION OF E'l_SEMENT /IND REVERSION OF IN'rnRes ·~. A, The duration of the aforesaid easement shall be p1rpotu al , subjnc t to written modifications upon the mutu al co nsent of both the District and the City, or their sucooeso r a, or th u ce r mlnatlon by tho City of the af ore said euaemont I n said pro perty , B. With o ut r egard to any other provlalone of this Agree ment , It ls the Intention of the pa rties t hat thl s grunt of ease ment not be revoked, c. The .uratl on of th e occupancy of tho wat or detention a rea by flood wat ers Is un der~tood to be temporary and Inter- mi ttent , dep endent on weath er conditions. The Ci ty agre es to prom ptly c le an up an y debri s and deposits In the detention area due t o stor m wator wh e n Eald wat~r hac been returned to Littl e Dry Creek and pa y the costs trere o f , 3, CONSIDERA TION, A, The City s hall pa y as consider at i on to th e Dl a t rl ct ') tho s um of: Onu Doll a r ($1) pe r y0u r1 C:lty "l11lll tr..i nu [ur t11 Dls t r lct th a t prope rty describe d In EKhlblt B upon eK e cu t i on o f thls Agreeme n t a nd an e aa a mant on that property de s cribed I n Exh i b it C, Rece ip t o f t he au m of Ono Dollar. ($1) a nd other lJOO d and val uable con s i der ati on I s hereby con fe ss e d and ~ckn o wle dged. 6i 4 , HOL D HA RMLE SI, A, 'rhe Clty ag r ~oa f ully t o Ha ve ha r mluu>J onu d du nd Ll1u Dls trl c t a nd t he Dlstr l ct 'a Bo a rd o f Dir ec tor s pers onally from nll s u i ts , ac t io ns , de mands, o r c l aim s In law or. In eq u ity, urlsln g out o f t he e xe cution o f t hla Ag r e emen t , o r th e de s l gn, e ng l ncerinlJ, use, const r uc tio n, and main t en a nc e of the real pr o pe rty her~in descri bed, Th e Ci t y shall be respons ible fo r un y liab i lity resulclng f r om an y lltigatlon a nd shal l pa y tho co»ts of ault , attorne y s • foes , llp pcllate c ostu , nn ll t.1ny ot:1!1;1r co uts o r cxpe nulHi which may be assessad against t he Di s tr i ct and the District 's Uoard o! Di rec tors personall y as a res ul t o f any sui t, deman d, or claim flied conc erning t his Agree me nt, ; • OtiLlG /1'l'ION8 OP Cl'!'¥, A, rurpose. The pre ml$e~ oh all be usu~ s o lel y fo r t he fac ility a nd purpose de ~cribod In pa ragr ap h t bov e o r for s uc h oth er purposes a s the District may a ppro ve , 'r ne City will not ca rry on or per mit upon the premises a ny offens iv e , noisy, or dangerous acti vity or a ny nuisance t o the public or to tho adjo i ning neighbors, 1'hu City will pay, upon tlumu11d, '"'Y d,.,m."J'"' t o th e prumlnus cauBad by tha mluuuo of same by Clty or Cl t y'u cigunts or lly City' i; employueu, 'l't1 u t:lty shull not uxu r ciuu ,111y control over the routine use of the facilities by the District, The City shull not usu the facility to detain watur uxcavt whun In Its best judgment said use ls necessitated by vir t ue of storm or ochnr emorgency conditions, s. Construction and Maintenance, 1 . The sto r m wat-,r detention aruu tlu ,;cr I Lluu ;il,o vu s ha ll be constructed by the City at Its sole cout and expenae a c ~o r d l ng to approved plans and specification s , Tho Ci t y sha l ma .n t a !n th e ba nk s from e rosio n (det e rio r atio n and t hu l !ku ), r•ta !n!ng wa ll , upl l lway, a nd dru!na go sy s te m (lnclud!ng st o r m d r a inage pump) whi c h a r e necessa r y for c ontro l of stor m wat e r H ard be r o &po n s !b le for c o s ts nec e ~s a r y f or uou an ti mai n ten ance a l ~h e de s c rib e d sto r m wa t er dat a n t lo n pond f ac i l itie s sole ly a nd ex cl us l vol y ne cessary fo r co n tr o l of storm wat e r s . Th e Dis tri ct shal l mai n t ain t h o pru os box, restroo ms, co nca sH l on sta nd , ~o!ntenanca s ta r g o ar ea , bleachurs and th~ ball/p l ay (!~Id~ a a t he fJis t r let datu r ,n!ne s ne cus aary s o l o ng il S th o ca pa cl ty of t ilu s torm Ja te r deten ti on a re a I s ~ot di mini s hed or Infringed upon , 2. I t Is ant icipate d th at const ruction aha ll take or,s (l) ye a r t~ c omplu te f r om l o t ting o f bid s f or construct ion and r etu r r l ng f ac il it i es to a c ondit i on us abl e by the District, Ci t y I I .. agrhs to take whatevur steps are necess ar y t o r otu rn f,1t:l l l tlu ,; 1,, a condition usable by District as near aa p ructicablo aB t hat cu rre n tly on th0 pr opu rty ond Install porm11n o n1 : un<1 u r ,1r,11111t1 sprinkl ing sy stem , oll ot City cont, The City uhu ll provltlu District with City park facilities neoessory for Dl~trlct'u us u to Inc l ud e thob, functions fou nd on ~xhibit Dot tho locuti ons de s ignated t herein , for o pe rio d during thu con u tructlon and in t i<~ future at such ti me s as the water det e ntion area le filled with st o rm wate r and not ret urned t o a Uliublo condition for Ul u trluL f unc tions within five (5) days of its temporary and i n tur mi t t o11t use by stor m wat ers, Th e City's obligation to provide t he Dis trict with Ci t y par k facilities during tempora r y and Intermitte nt usu o f the area by s to rm woters shal l continue unt il t ho City ha o ro mavo d an y de bris and deposits rumalnl ng after storm wat e r has be en return ed t o Lit t l e Dry Cre e l< f r om th e ar ea , 'l'l1u City agr ~u" to l'-'Y all transp or t at io n cos ts usi ng Dl s trlct 'e tran s po rtati on fa~l li t i a • based on act ual cost of tron a por tlng stude nts and faculty t o and ~re m sch ool locat ed adjac ent to si t e of storm wa t er d e te n tion a raa to the a pprop ri ate Cit y fac i l i ties designated in ~xh iblt D, sai d actual cost base d on Dist rict's no rmal unit opara tlng expe nse for ·:ransportat lo n f a c ilit ies , on a pe r pupil per mile basi s, pl us addit i onal equipment and hir in g o f ad d itional drivers necess a r y to ca rr y out said purpose s, the Intent being fo r tho District to r ecover not less than t he e~a c t costs of such traneportatlon, ., 3, District hao approved tho conutruc t lon 1Jcl 1u du l" ancl City ~hull require sufficient security fro m tho co n tr 11 c tu r t o on ij ur o prompt oKucutlon of thu work, lioth 1w r t luu um\u r,;L,11111 t\i.11. c onstructi on may take lon9er than one year but Cit y shall ensuru that contractor, In no e vent, shall take more t ha n onu und onu-h a l l ll l/~) years to co mplete construct i on of the detention i'o nd facility, 4, A, Shared Maintenance. For a period of two (2) years a f ter the co mpletion of constructi on, City uhul.l mu l nta l n t ilu t u rf and landscaping within the easement area described In paragraph l,A, Maintenance shall only mean watering, a p ply i ng appropriate fer ti lizer s and che micals, mowing, tu d , tree ond s hru bbery car e , and landscaping, City shall mai n t a i n sp r inkler systom du r in g thi s two-year peri od , City a nd Dis tr ict shal l dlvld o cost of ma in t en a nce on th e ba s is of Dist r ict payin g fi fty rorccnt (50\) or Twe lve Tho usand Doll ars ($1 2 ,0 00) per. yoar, whlcll uver I~ l es s , and Cit y to pay the re mai nde r , Af te r t he t wo-year pur l ed , City and Dis tr i ct wi ll reneg o t i ate a llocation of malntena nc u provisions as co nt al ~ed In this par agraph 5,8,4,A, If agr e e ment bet wee n tho parties as to the alloca ti on of main t en a nce costs and mai n tena nce provisions Is not made by the end o E t he tw o-year peri od, then ei th er party may request arbitration of th e all oca t ion oE maint enance costs and maintenance provislon a oy the Ameri ca n Arbitrat ion Asso c i ati on pu r suant to the rules o f the Ame r con Arbit rat io n Asso c iation , Thij a r b itration shull 8 y consist of ollocotlon collt oe molntunonco llutw uun tilu purll l!ll ul the I t ems contained In th la paragraph 5,B,4 ,/\, ar r dln~ to thu u1.u of the dotentlon oroo by the roapaotlva portlou. ~urtltu r , thu arbi t ration sholl, at the request of olthor pdr t y, duturmln u wn l c h party or wh oth er a third party shull do tho molntunu nco of tho Items In tnls paragraph 5,B,4,A, ~rlor too dotur mlnotlo n by t he orhltrotlon the partlee sholl contlnuu ,~olntun unc~ puruuunt to Li d •; pa r agraph 5,B,4,A, B, Maintenance of tho press box, ro,itrooms, co ncesslo ~ stand, maintenance storaqo aroo, bleoch e rs, ball/pl oy l ny fi e el s (other than tho t urf ), cleanup (othor tha n from Htor m wat er), utili ties (other than water for turfl shall be tho so a an< ax e s l vc respo n sibil i t y of Olotrlct, lt Is further Intended that the City shall maintain ~JO ba n•• (fr om e r o s !on and t ho lliol , retaining walls, spillways, a nd d r ai nage syst e m (In cluding storm drainage pump). 5 , r~ajor repair or reconst~·uotlon of on l mprovum~nt I~ tnc de te n ti on area shall be as mutually agreed upon bet woon tho ,urt a s aL ~ho time r o pa l r or ruconstructlon Is necessary or de si ra bl e prov i ded , however, that each party shall be responsible 9 for tho cost of maj or repair or reconstruction of un l11111ruv u111 "11L resu ltlny from their s ole usu or negllgonoa, City shall bu ro upon u lblo for ropalr or raoonlltructlon of un lmpr ovo111unt: tlil m,,,J., d uo t o flooding of the detention 1re1, C, Little Dry Creek Improvements, Tho City agruo a to construct Improvements generally l n contormoncu to Sol lard & Consulting En~ln eor e Report No, 75UlY-44 doted Pe br u«r y, 19 /U excluding the options to construct upstream dams (Exhibit E), 'rhe Ci t y rocognl~es tho neod and tluulrailillty of pruvldl 111J OiJ"" spac e and a pedestrian and bicycle link bot we~n the Di stri c t 's propert y and the South Platte River, The City intends to develop appropriate r outes In the vicinity of historic Little Dry Cree k for such a l i n k, Further, City racognl ia a the nood to Improve thu yene r a l appeoronce of downtown ~ng lewood and I nt ends to dev el op aos t hetlc standards that ar 9 pe ople oriented with landscapi ng and o pen sp aces app licable to both pu blic and prl voto development in t he City and c onside r ordin a nce changes to accomplish this godl, D, Alt erations , With th e exception of the Interi m facl !ties and initial complete d oona truotl on of t hu s tor m wat ur detentio n ar ua , t he City wi ll not ma ke or permit any alt eratl ono or add i t i ons to th e pro mis es or place any additional structures, fac il ities or oquip~ent on th e promlaes without tho District's prio r writ t en approval, The Ci t y shall submit plan s for mi nor rema de I ng t o t he Boar d of Ed uc at ion for app ro val. No rnajor r emodelin g ,di be permitted that would prec lude t ho Dilltri ct 's lU of the r eo l property fo r. Its general (lu r po oo o rir !or to tl,h -,' Agreeme nt , Upon termin a tion by City of the 11bov o -d u11cr lliod V I oouomont In sold proporty, City Bholl runt o r u or r u p1.i cll ,11 ,y portion of the premises damaged or oth er wiu ~ oCCuctu d by o uch alt erati on s, odclitlons, struoturoo, foolll t lou, or uq 11lp 111un t, unless such resto ra tion repair wou wo lvod b y tl 10 UIHtrlct at tho time approva l was given for s uch addit io n or olt ~rot lon , Thu District shall approve construct ion aohedu lus a nd the City shal l roq u lr u suffi c ient uacurlty Crom c ontractor t o unuuru pro mpt exec ut ion af work, ~. Co mplia n ce wi t h Luw, The C t y will co mply with all app lic a ble federal, state, oounty, mu n icipa l and othe r l u ws , ordlno nc ~s , r ul es a nd reg u lat i ons rol o tlng to all or any 1rnrt of the f o llowing: (ll th o p r omlseu 1 (Ill the oporutlon of t ho fa cll - :t y c ond u cted t h oro on 1 (l !I) th e molntonont·e o f th o p r oml ,;c•c ; '""' t h e Clcy shall rufraln f ro m u s ing the premloes In any way n v !ola c lon o f suc h l o w, ordi nance, r u le o r r egul a tion, F , Liana, Th o Cit y will koep the pre mises free of all ! lens a, d /o r cl ai ms to be placed on the premises, for what ~vu r reaso n , to b e ra move d with in thirt y (JU) da11 s aft e r City hti s ,n owledge of suc h l l en i an d City agre es to relacse, l.1d~mn lfy and r · !:l tho Dlst rlc t hcr mle ss from and again s t such lien ., end/or o l ms , 11 G, Surrender o f Premises, City will, upon tur111l11,1tl1111 o f Its easement In said property, surrender tho prnmlm,,; to tho Dbitrlct, In a <J oocl or<lur ancl uonclltlon, and whu 11 ;Jl'!JI ic:.ildu, i11 co1npllance with the pr;lvlalona of paragraph S (d), 6, COMPA1·t.f!.\:.Ll/§.~_BY 01s·rR1c•1:, I District may make Improvements and undortaku constructi on on the above-described property eo long aa such Improvements and construction do not reduce the cap acity of the site for storm wa ter detention, Dlutrlct shall request of City 1··s oppro vul a nd t!ty shall not withhold approval provided the propostJ construction and Im pr ovement satisfy the storm water detention requirements herein. Di stric t's use of the property for ite prese nt purposes as o~hletic field a nd f o r subs~quent compoti bl ~ uaes approved by City shall bu deemed do mina nt and accomm?cloted by City, If possibl e . 7, CLARKSON S1'11EE 'l' PAVING CONSTRUC'rION, II , Shoulr City or other entity ever pave or construct Im prove ment s on Clarkson Street and should a mathocl of asuessment agai nst prope rty abuttln~ improvements be made, City shall pay full coat of any as sessment fo r th at real prope rty ownod by City abu t ting Clarkson Str eet , 8, INSUH II NCIL Dlstfict shall continue its insurance coverage on the r~al prope rty described here in during Its uso of the property for its general purposes, 12 City shall, In ocldltlon, lncludo tho <1etrntlo11 or u11 r i:.i l propor :y I n Its Insurance covoragu fa; loaa re ·1u1tlng from th u <!l;u ·,, of s a id propurty afl a storm w~tur uetantlon ,Hoil for l liilil 11 t y i 11 excess of the coverage maintained by District at City's expense, Said excess coverage 1hall bt obtained and kept In force during t ho term of this Easement Agreomsnt and shall Include, lntur all11, u comprehensive public liability ln11ur11nce oovurago, lnuurlny th o District and City against any liability arising out of the uso, occupancy and m11lnton11nce, 11n<l 1111 areas 11ppurton~nt t11ur uto IJy City In excess of ooveruge provided by District, City s hall deliver t o Distric t , prior to right of entry, copies of polici e s o f i nsur a nce required herein, or cortlflcatos ovldonci ng the c x i sten c 0 o f su ch I nsur a nce with a loss payable clause aotis[actory t a Dis t r i c t , No pol i cy s hall be cuncellobl e or subjuct to rud uc tl on .. c f co ver age , 9 , DI NDIN G_ON SUCC ESSO~S_AND ASS IGN S , The ter ms and conditions of this Agre e ment shal l be bindin g on t ho 1ucc e oso r s and uaa lgna of both par t i es hereof. l U, REM EDIES UPON BREACH , In the even t o f br e ac h of the term s a nd condition s h e r e o f by e i t he r pa r t y, the o t he r pa rty shall be entitled to specific pe r for mance of th i s Agree me nt or , in the alter nat i ve, the non- br e ac h in g pa r ty s ha ll be e n tit le d to damag e s suffer~d as a result c f cha bre a c h . Di stri c t m~y not r e voke or cancel this Agree men t In 13 the ava nt of Clty's bre a ch but mu st r.esort to thu r.omc<l l uu hcr ul11 provlded, 11, £.l.lltl!J.4!!!.,...@.li.itti~ l\t;!VOK 1'!D , The A9reement dated the 2nd day of -February, 190, Is hereby revoked, Thi• agreement super.sedas the ~obruary ~, lYU, AQreement In Its entirety, IN WITNESS WHEREOF, Dlstriot hos cauaed theso pr.esonts to bo executed by the president of It• Boord of Education and attested by the secrete r~ thereof, and City has caused theso pre s ents to bu executod by the May or and attested by the Dir ec tor of ~lna nce ex off1 c 1o City ~l er k-Trua sure r.. AT'rEST: SCHOOL DISTRICT NO, l, ARAPAHOE COUNT¥, COLORA DO By -Pr osrdo nt of its Board of ~duca t lo n CIT¥ OF ENGLEWOOD, COLO RADO a munlolpal corpor.atlon Gary R, Hlgbo o , orrect'orof ___ ay Eugene L, oITs;-"Mii"yor _____ _ ,!nonce ex off!cl o Clty Clerk- ·r reaaurer 14 I .. _...__ , ..... ' ;:, •-• ,.. .. r&!-~:;:.,,-._ , !":':"'~ ---e ...... ·~ ,u ,"'"' •• ,0 ,.. ~ 1..::: .~:i:; ·-~ . ~ L'----c"==::= 1 ~ '•_, • w ,u ... -:,~~ ' --~-~-_..,.._._ ~-~ '=::::1 f:f:::: --------.. ,@ \ t ' .,,,.. .. .._ ~-!;~: ~ .. -,._. .. ,_J!_ ,SU ~-"'::~- ~-':~ 0;:;-z:•::~·-.:__~_ __ -G ~ l .rTTL£0RY CREEK -ScM,d1,1le ISt-B ff P.XHIIH"r ll l:Jl>~C1/\l. W/\1111/\N 'l'Y u,mu CITY OF ENOt.EWOOD, COt.'5'1fAc5, a ColoradomunTcTpal corporation with City Ha ll at 3400 South IHatl Stroot, en\]lawoml, County of /\rapal1 ov This Dead made thla day of , 1982 betwoen the I Sta to of Colorado UOllO, hereinafter "grantor", anc.J Ht:i'IUOt. orn·1•1u cT NO, 1 1 ARAPAHOE COUNTY, COI.OR/\00 1 4101 South ~annoc k St r eet, Englewood , Cou nt y of Arapahoe, State of Colorudo OUllU, horolna ft u , "grantee 11 WITNESSETH, that the granter, for and in considerat io n of T~N 001.l./\RS AN O OTHER GOOD AND V/11.U ABt.E CONSIDER/\'r!ON, to tho qrantor i ,1 hand paid by the grantoo, tho r e ceipt wheroof lu herul>y <.:0 11[uuuvu """ acknowladgod, has granted, bargained, solu and cunvu you un d l>y tlie ,;e presents do es gra nt , bargain, sell, convey anu confl~m unto the gr a n tee, Its heirs and aaslgns forever, ths foll owin g real proper ty s lt uete, lying and being In the County of ,rapahoe and State of Colorado, to wlt1 A parcel located ln the South 1/2 of the Nor thoaBt l/4 o · Section 3 1 ToWnYhlp 5 Bouth, Range 6U Woot of tho Gth P.M., Arapahoe Count y, Color ado , described os follows: Commenci ng at the · So ut heast Corner of I.ct 6, Sandr u •~ Subdlvlslon1 thence North 66 dogreos 1 5 1n lnu too Wcu t alon g L loc• Southwesterly lin e o f said Lot 6, 1 41.~2 foot to tho t ruu Po int of Begl nnlng1 thence continuing Nor th 66 degrees 15 minutes West i9 ,5 feet1 thence SoJth a l ong the WeBt proper ty line 252,3 f eat moru or less to the North right of way l inu o · cost Lehi gh Avenue1 thence ~est alo ng sold line 27 fee t ; t henc o Nor t h 240 ,4 foet more or le a s to tho Point of Beginning, Said par ce conta in s G,652 sq uare feet or 0 ,1 53 acru~ mor , or les~. The gra n tee hereb y cov enan ts an d agrees t hat the roal proper.ty c onveyed hereb y shall be held and used for pub l ic educatio nal purp oses t og e ther wit h suc i1 other use ~ es t he grantee determines necessary. ·ro get her wltl1 a l l an d singul a r the heredltoments and appurtenanc 0s l the reunto belon gi ng, or In an ywise appertaining , and the reversion a, reve r sion s, remainde r and r e main der s , rents, Issues and pro fits t her of 1 a nd all th e ostata, rig ht , title, Interest, claim and dema nd wha a oevH, of the granter, e i the r in law o r oqulty, of, I n ancl to t hu uoo v~ 1iary,ll ne<l pre mises , wi th the heredltoments ·and appu rtenances1 ·ro H/,Vc 1,liD TO KOI.D , the sai d prem lsee above barga in ed an d descri bed with the uppJr tcna ncus , unt o th e gra n te e , Its he i rs and assign s forov~r . I And the granter, for Itself and it11 suc cu ~11o ru , covun M,t :; ,Jill i "'J1 ,·1::; to and with the granteo, lta heirs and asslgnu, tho ubovu bargal nu~ premises In the quiet and peaceable possession of tho grantee, It ,; heirs and assigns against all and 11very purson or [1Ur1rnn u l u wl'ul ly c laiming or to claim tho whole or any part thuruof, by, 1:1,r ou ,111 or under tho grantor I to WAIIRAN1' AND ll'ORl,:VJ,m llli l'~Nll, IN WITNESS WHEREOF, the grantor has caused Its corporato name to b u hereunto subscribed by Its Mayor, and ltu corporate soul to bo hur u - unto affixed, attested by Its City Clork, thu clay and your first a~uv ~ written, CITY OF ENGLBWOOIJ Attest : a Colorado municipal corporatio n Gary R:--Hfgbee,c"ffyff~ ~enaC, otri!, Mayor~---··-·· STATE OF COLORADO ) ss, COUN TV or ARAPAHO ~ ) The foregoing Instrument was acknowledgod bofo re mo t hi s day of , 19 by Eugene L, Otis as Mayo r and Gary 0 R7"iTigbse as cit"y"ciariio"f thscITy o! Englewood, Colorado, My Co mmi ssion expires: Notary Putiffo -----·-········ .. Addruss: EIIHibI'f C WHEREAS, the CITV OP ENGLEW OOD, COLORADO, (City) la t he present owner of certain reolty located within the City of Englewood , County of Arapahoe, State of Color ado1 and WHERE AS, the City has requested SCHOO~ Dl~T~!CT NO, 1 1 AR /\PAIIOE COUNTY, CO~Cl1 ADO, (School Dlatrlot) to use a po rtion o f !cs r e al property for o storm water detention area and tho School Distr ic t has ag raod to ouch uso1 an d WHER~AS, tho School District has a need for sold reol property her e i nafter doocrlbed for Its purpoeos1 NOW, TH~R~FORE, City of Englew ood does hereby grant, bargain, a nd sell t a Sch ool District No, l , Arapahoe County, Colorado, a pe r pe t ua l r igh t of way and easement over, across, through, and und~r , for cha purpos es and upon t h e conditions herein contained, th e fo llowing described roolty1 I A parcel located In t'ls South 1/a of the Non1 1uJst 1 /~ cJI Sect'·n 3, Township 5 South, Ran<Ju 68 wo,i t of tl 1u !i C1 1 11 ,M,, 11 r ~1 --.~o County, Color a clo, cle11urlhocl an Col lo,11;: 6eglnnlng at a point 2,5 feet West of tho lnt o r ~o ct !on ot t ho Wes t right of way l i no of South Clark~on tHr oot a ncl t llu North right of way line of East ~,high Avonuo, th unoe Wo>it 56 foat along the North line of e1111t ~ohlyh , t honue Nor th 179 feet parallel tu the West line of Sou t h Clor trn on Btroet, thanoe East 56 feet to a point 2,5 t'e o t Weut o f t hu West line of Clar.keen 8trt1et1 thon oo fl out 11 !'/Y fu u t to tt·,u Point of Seglnnlng, Thia ease ment contains l0,024 aqua r e feet or 0,23 acres, more or lose, Th e righ t of way and eaee ment hert1ln gr a nted aha l l be oxc lu a l ve to t he School Dis t rict for Its educa t iona l purp os e s , I nc l udi ng t hos e pu r poeee Incidental to the School Distr i ct 's purpose s or c onve nie n t for the School Dlstrlo t , prov ided, howo vor , chat If Sch ool Di str i ct or It s su ccessors ev e r ab a nd on thu usu or the s a me f oe all of t he aforesaid purposes, then and In that ov ont , a l l r ights gra n ted he reb y s hal l t erminate a nd tho foo a l mp l o t l t l u t o t hu a bov e describ ed real ty shal l no longer bo encu mbur ed by suc h rights, Th e Ci t y f urther agre es that It sh a ll cause the realty Sll bj ec t co th o oano111 on t he roin granted to bo Improv ed to Guch s tand a r ds a a presently ag r.e ed upon by the parties. Upon co mpleti on of such l rn pravo ments a ,.•1 con s t ruc ti on and aoc ept ;i nc o thereo f by Jepro p(l ac e offi c ials of tho Boh ool Dist r ict, School District shal l t hereafter undertake to perform repair and malntunanc" upon .,;., itl eaeement, Oatocl this_ day ot ______ , l983, Attest1 m-,7n:--i:r1gSa·J-~-a;-orrrcro---- c i ty Clork-Treusuror Attest: Sec retory STATE OF COLORADO COU NTY OF ARAPAHOE Ct•ry 0~' ~NCJLEWOOO I COLOHADO SCHOOL DISTRtCT NO, l • ARAPAHOE COUNTY, COLORADO ay_··----··---··-··-········ .. ······ .. l'reeidu nt of its Board of Educatio n Th o foregoing wus ack nowledged before me by Eugene L, Oti s a s Mayo r and a t tested to by Gary n, Higbee, ex officio City Clerk-Tr ~o surer , or the City of Englewood thle day of ---------•••---I 19 a_ --------- My Commlae lo n expirea1 NotaryPuSfro--------- J4oo s. Ela ti, Engl&wood, co I STAT E OF CO~OR/100 CO UWl'V OP ill\l\l1Ai'I OII 'Ch ~ forogolng was ac h.nowleclged beforo me tJy --·-·---·•·• .. ·•· ............ .. end as ---··---·-· -;na-··--------.. ··············0r ··-·-·· sch oorol'iitrTcf iro;-r;--A'rapah oo Coun t;;-·c·oTiji:"~·ti·ii;···n1Tij ............... clu y ot ___ , 198 Notar Y l'uofl C ••-••••••••••---·•-···· .. Addre as1 My Co mml aalon exp lrea1 :l ~YUy rnq\lonov '"11110 or ''" Preuvnt t-oo.'1t1on :;t~~o~~w ;. ;,~~~~~,H •••,•>--" , \, ,. IH9h School IOVI soccu >HdiSll lehooi .• cuo, W loccar co.du uio and var1uv roouau cuo O looou .n4 reo\llaU ou,, Cron CO\IR\IV 0LrL I Vnll\V IIHH ar,d loyt Ltortnt MU OI lohooL anC IH 9h U hoo l 't'UOk cudt 9 OUU°DIU YUU\V oov• hllb&U Co M,1,1n 1w loon auu,u \Coh ~119\U \J\rouq h l:,P ,0,l t.cep0 n D , raOb J.rdl l'n·,~ L,1 t U.1,1ou.Lo n CO\iU 9 Ci 10 11uhU 1 ionw0i C~r l l ,occor p,111 0,111 01111 0,111 01111 0,111 0.a.,-, 01111 O&LlV 01111 . · DIUV 01111 1,11,to l\uuwn to On~ of ootobor ' Llt0 1\\19\IU ,to )nl Hll., ol 001., hUQ\111. U to llovoN,i J iA\l\j\lU U to IIOVOINIH I ,,n ; H&roh L \0 lllld•M•V I M1rah L to I MLd•MIV !Kuoh l to . rnld•K&V Huoh l. to oLd•KIY IOI 1prLn1 I 101 hLI ·. BU IIYII Or ('f'Q &.i:O \IH Uoldo n;ula~lv tor pnotloo Uut. Lt LI not cu ho dulodl sop ,. lo to orirro11, 110v, --·----•"-""I ' ... ' . 1J1uub1U l'hhl 1lawun , .. i·,·· 11crk ... -------·· Vlood PLoltJ IJMtUU•L0',11\11 ° •. liU ~-_'~~.'. • 0 •1 '; '\ .. 11urk · ·-·---··-·-.. ···-····-.. Pnotloe root• b1U rL1Lcl iittU\111 AU t.ht vroumll Pr<uitLoo .,oot• blll rLoU DUdLWll 0Unn )' HHln DPUOblL1 rLoLd llo_ooar '1dd11 Duob1U ri.ol.\l • othor Uol.du tor pootLou 2.a t Cho1oo-rootbdl. .,u0Uo1 PLal.\l lnll C:hoLoo•Cornau ot Uuob1U Vi.olil Jrd Choi.oo-CKtn · r1o,a (OOHn' t. 1p5111r t.hlt 1ltunat1 thl.d h , ngndnd , \ lll,1Llu't'hw llUk Ponnv•KLUor TO Do .. Ootora1 Lnod '1'0 uu Ootorml n1ul ' \ -~~t.011•Liu•n ......... _ ........... -•·· ;_:·:· ', ... ·.~ ,,,• .. ,·: ·' .. •··•: .. ··· ·., J,'\ (1 :'." ::••,, _______ ,, __ ,, __ lU lO ... .I · ;I, .. • Oua Uoto G, •• Sou Noto 7 . 11 U 'uu11 1 u1ad ~n tn no()Qrtulon ;\U llt /l\Q Ot •·,.unol l\uu u\.otlono . • . 't l\O hcULUII ,o n;l,Jo r od Ill O(l(lhOlb~U oBornno OltOO UG I Ll tunny HL Uu, HO O louth Dohvuo ro r buobtll , .. 1 Jc~on Pork , Juan and 0-.1 l ncv tuuu not llu t lnadl ;i Du oa•Urqtn PU K t or 1ooco r t ald ~o uvLtl oo , :, Ou lle.v u v Par k &o!U>all Oold u (\l uu not do flnod) :iot1r,y KL Har tLohl "w Ul ruqulro ,t ho oo111 11n11Hun ot l'OllO\' i.o vrupuu ia ,110001,...olluo 't'araay DauoboU , :110 l)(Q (lO•o d oltllU cr o t.OMHlVII ,ml \10 \llU IH)tld t.u bo ouordwl\lltOd w1th ~Chor cay •vonOLOI, I t,~ t,r~..i nl tQ !i O\l~Oo : ri ro9rtv.1 by uc:hooh HO ho lQ botwoon IIO'I OIN>Ol L to >111oh l., ro1Utib confl~ot wl\h Jun\or N:,orii;on boooor oponoorod by-&nvlowocicl lulu 01part.Mn1:, ' :,m c,n,11 10,,11 pro QrM UllHIOQ ·••Y ol lho litldo Ind 1lrtodV OIUIIQ • 111jgr plngh lor lloldg, r.r,9l ,o'COd P<H I ti optrtn:ont hc.ipou th6t tho lr prOIJ C'C,fJQ in .. ho ttH wUl h,v, tlrlority 0'101' GOG ~hon tUGlO I.A l:1 0 t.l fl!l\a \ll tc.u lti irli!Jo uurin~ tho c-om11:ruo tl0n ,,oriod, SUPPLEMENT To 1975 LITTLE DRY CREEK ALTERNATIVE DEVELOPMENT STUDY ENGLEWOOD, COLORADO FEB RUA RY 1978 S & G No , 750 19-44 l;l)r;!i LJL T ING t r. 0 I~, C l rl Si SE LLARD S it GRIGG, INC. 854$ W. COLF AX • SUIT( 4 • IOUIIU 'LAZ A L,',Kl:WOOD, COLUHAOO 10111 lll ·IG 7l 1 Febr uary 1978 S up pl e me nt to 19 76 Li ttle Dry Cr eek Alt e rnative Devel opme nt Study Ge nera l Discus s i on Following several public me etings and j o int meetings betw~en I t he Englewood City Council and the Englewood School Board , ,st which the July , 1976, Alternative Development Study for Lit t le Dr y Creek within Englewood, Colora do, wns presented and discussed , a new n lt c rn at iv e (h erein referred t o as Alte rnative tl o . 5 ) wa s establ ir hed . Al ternative No. 5 mix~s e lemen ts from the proposed solution in the McCa ll-Elling s on & Morrill , I uc ., report entitl ed "Major Drainngeway Planning -Little Dry Cr ee k," Fe bruary, 1974, and Alterna tive No . 2 in the Se l lard s & Gr igg , In c. July, 1 976 sLurly, '!'he 1974 study proposed a sys ~em of s ix up str eam da ms to redu ce the peak runoff flow through Englewood t o ~700 cfs duri ng t li ,· p 1 o- jccted 100-year flord . •rh e exis t i ng box condui t carrying Li t lle Dry Cr e ek undergrou nd near the Cinderella City shopping c o mpl ex could be made to ca ry this flow with some modifications t o Lhe u,,s trE.1m end of the box . Un der t hi s propo sal, t he cxistin<J l ,,.,,1 section of ] ;, ' x J.5 ' box woul.rl hr.1ve u pa r id.le] cc J 1. ,ad ded u11cl ,, single cell 12 ' x 18 ' box woul d be extend ed from th e presc~L en- tra nce µoint at Girard Avenue and South Bannock Str ee t to !:c1 ::L Jefferson Aven ue a nd South Shc.ffin<-tn St reet . 'l 'he r mainder of Li te~ Liltle Dry Creek ch ann el woul d be concrete li ned f rom South Sherman Street to Sou th Clarkson S t re0t ~ 'J'he p r j111r11·y r een;o ns for concrete lining the: chnnnel wei·e (1) Lo m.:iin t cti11 the 111c1xjmunt amo unt of c•11C!rqy ~n t!.0 ~]owj11CJ water no tl1dl ,1·10 0 c:f~~ t.:u11Jcl 1 ... ·1~;1~ t l11 ·uuyh L11,• 1,v>: and {)) LO utilize:: exist:l11CJ c:l 1an 11 e l riCJ h U ;-•ol-way so that i.L \•1ou l ll not Lei necessary LO ac y 1..1in1 ndc1it.io nal l,Jrup t!r ty ~ :'.ll tr.c ul tcrnativen ill the 1Y7G s tudy wcce based on th (! a s.l.u111ptio 11 that only two (Holly and Englewood ) dams would e xi s t in the fo re- seeable :uture. For this condition , a pe,ak runof f fl ow of 70 00 c:s for the• 100 -ycur flCJod \•1,1 !: pre<ljcled to IJe ctt So uth Cl.'11:ks u11 S.trccL . Al tc:t·na ti vc Ila . :! proµosed to reduce the pea k flo w to appro,:i.mately 4000 cfs through a deten t ion storage po nd on th e school prooerty between South Logan S treet and So u th Clarkson S t reet 'c:1 the south side of the LiLtle Dry Creek cha nn el. '!'he cx.isU.ng _(rnd se:ctjon of 12 1 >: ] 5 • box cot tlL1 i t would have a pa ra l le l c e l l added to handle th.is fl0<,. 1'he remai nder of the channel fro ni East Gi rard Avenu e ancl South Banno ck Street to Sou th Cl ar kson Stree t v1cn .. ~ j be ri <3rnss l i.1wd cha nnel LrPt1 l:cci us usable opC.!n space. Se veral major objecti ons to the Alternative No . 2 pro posal ar e : '.i) th., detent~on po nd would reg:,ire e xcava tion in a l l open areas :.c;rt!: ot r.he r::xist.iny ioot!Jal.1 stadium and school -bui.ldi n <Js , (2J the e x cavation ..,ms fie dr::ep thu.t i t:. encroached on the pre•\!11t 1eve l oi ground \•lil tt::r in Lhe ,:1rea , r, (3) the underg.:ound sys tem for controlling ground water would re- qui re full ti.me pumpi ng, (4) the size a nd depth of the detention pond area reduced the actual u sabl e area for athl etic fi elds fro m the p resent available ~pa cu. Under Alternative No . 5, :he City o f Englewood woulcl work 11ith thu Ur ban Drainage and Flood Con trol District to ul tima t e ly corn 1>lete four darns upstr eam. 1"hese would i nclude exis ting Engl ewood dam nnd proposed Hol ly , !lorry a ncl Prentice D ~1111 H.. 'l'h c aclcli t ionc.,l Ll<'t.111~ 1•1 ould red uc e the peak flow e nteri ng l~ngl ewood at So uth Clarkson Street to 5800 cfs. A detention pond is proposed un t h e ,;c l,ool property wi th a capacity of 136 acre-feet. Thi s detention po nd would red uce the peak c hann el flow through Eng l ewood to )BOO cfc which co uld be mad e to pass through the existing box condni t by addi ng the previous l y me ntion ed para llel call to the u pstr P11m s.t•c·-tion . 'fhe foll o wing is a more detailed discussion of the propos d improve- ments as they relate to this Alternative: Hc:ach l: ln t he 197 G Sell,n us r, Grigg repo rt , e ach of th -, .,Lt-,1: Tlatives with improve.ments recomme nded a grass l ined open ch .. 1n 11c~J fro m 1:he South Plaltc nivcr to Sa 11te Fe Drive simi lur t-.o l:h.,L p1 ·u- !')Osed in the 1971. s~·.1dy . ~l'his wnuld alsn be., part of Al '-t·1"11 ,•ilivt! !lo , 5 . Alter11at_i 1,c No. 2 propusccl d g r ass lined ope n ch .111 11e.L !J1.:- tween the outl et of the exi s ·inn l.ux co nduit r1 nd th e Sa n t.it Ft' Hr-!i.l road bridge (east.e r~y lJ1 icloP :.t: So ul11 :>.:1 ntn FP rwive ). I/owP\'f'l, i ri t\ll!·rnu t:iv(:i·: Ill,. :J .11tl , ,•,•1Ll1 ,d J l.lu • f l u\•. li.·11HJ c.:H·t !\d li~ the bo :.: c onc]11it , l:lie -:ip Ljon 1s dViti lab ]c fo1 · th\.• exis tinq ~2• x 10 1 box to be ex Le11rled and •. u1 lll!d to tl .i.ri::ct Lh e flow wcs tt:11 y unc.lt:i: tlie bridge. An ener yy dissipater wo ul d be req ujred t o red11 cc the velo c:j ty n[. th e fl ,..J h0fur,· i L [l116H t.~cl uncle the Sa nta 1:•.:: J~.:i.1. i1.0C\d b ridg e. This op tion wo u l d raise the es timated cost for Reach 1 to ~l ,2 77,651.00 , an inc r eane of $474 ,694.00 . 'file primary bPnefit o: extend ing the box this 600 fee l. wo11ld be to ~f"c]~jm" r>rc:!'1 of lr1 11c in a reasonabJ y good location. Howev e r , t•1i s add i t iCJna 1 c:.:p cncliture of money cou ld be ma d e al rl fuluL·e elate ~nd woul ct n o L be requir e d a t t he outset of th e impr ovement project . Heuch 2 : '!'he 12 • ;.: lf1 ' port.iLi 1 o[ th e box cond uit would no t r:equirf! an,• mo dification . It is propo sed that a para llel cell be a dded to the 12 ' x 15 ' Portion betw ee n the transition at the interaection u: (;J.n1 rd lwenue: ~incl :joi.1 tl1 Cln :rokce: SL i:ccL i:111cl Lhe box entrance southeas t o f th e i.11ter sect:ion o f r;; n ,rd /'\v e 11ue and Sou th Bannock Street. •rhe Parall el cell would be very similar to that propo sed in the 19 7~ 1-!;Call -F: lingson ~11d Mor ell report and 1976 Selld r ds t. Ci i9g report fo r /\l LC:n1 c:1 ti vc No, 2. ('l'h e cost .of th is JJ i• r.il lul eel 1 l':c.ts been j nc l u<1 ot1 wi U1 Hcac h J c.u tima t cs .) Reach 3 : 'l'his reach ,mul,1 be t:h c same as th<1 t proposed for All e rn a- ··2·- I li .i from the e ntra n ce l:o the box cond uit up stream to l:h e uridg e struc - tu re at So uth Sherman Street, Consideration has been given to ex tending the box structure to a point on the Little Dry Cr e ek channel south of Hampden Avenue. 'rhe major advantage would be reclamation of about two <1cre~ of sur -, f ace land within a growing c o mmercial area of Engl e woo d, Th" ma jo r disadvantage is that this choice would block re-establi11hin9 Li ttl e Dry Creek a s an open channel throug h the City. 1'11i,; choice would p roba bly preclude the City fl.om e v er r e-establishi ng an op e n ehan 11 ul. rout e through the comme rcial areas of Englewood b etween south Bannoc:k S tre e t a nd South Su nto Fe nrive . 1rhe estima t e d cost for e x tendj11 ,J the box i s $1,9 78 ,728 or $68 ,185 les s than the grass lined c hann 8l. The const ruction cost is higher, but we estimated acq u iri ng only an easeme nt for the box extension and no\: the entire hal f block us requ i red f or the open c hnnne l whj c h re Bult s in th e-! l ownr o st:l ·• mu t ed pr.ice . Re ach 4: The c ha nnel in thi s rea c h woul d be the s ame as fn r Alter - nativ e 110 . 2 of the 1 976 report . '!'he d e tention po nd capacil:y woul ,l be reduced from about 225 a cre -fee t to 13G acre -fo"t. '!'hi ,•. r,·cluc tion in capaci ty would be achieved by ra i sing t h e botto1n or th e p~avious l y p r oposed pond by four feet and by eliminatin g u ~u of che rcu of th e exis t i ng football. p ract i ce f ie ld . '!'hi s sh o11Jd ra .i~e I lie pond ubove the pre~c nt \)round water c l cv11 t J.on c.1r1 d i:~1 imui - ate Lnt \cipated g round wate r pro~l e ms fo r the a thletic fields lo - cu ted , •·~Je detention pond . 'f hw ~.s tinwted co z t of th e rl etcnc:icrn po nd would be S l.,367 ,3 5'.J , i i r e clu c l:ion of $3 16 ,1 5 '1 fro m J\lt:ern.il:iVl' l!u . L . In the 1 97G report , i t was pn,posed t o t ak e wa ter into the da tc,11 - tio n pond by a s · de c hc111ncl sp il l ~-,uy using ;Jeffcr~u n Dr i vu ,i s t he: weir ant.l a bridge at: P(!cl l.l S tr eel to cnn tcol the f low. On ;,Lit.l i- ti.onnl inv est igation , it appears that if the extra f lood wa to;r cr1n bc.-Drought unt1l,r So uth CJnr k so 11 S t reet i.11 n !\t.1:uct ure prtr ttl](lljny Llit.: t:z )~_;Lir:g Lr.1dy(•, i L wu u Jd I.it..: 111u re 0 J:f i .c iL:1 1t ·in ha ndii 11 q L he ~:irer nnd would eliminate a 11y wa te r f r om overtoppi11g So uth Clarkso n Street in a 100 -year flood Yince the e xis ting South Cla r kson S tre et br idge is d esi gned to pass only 50 0 0 cfs before t h e b ridge i8 over- topped. Be yond Eng le;:ood :. Alt e ~na tiv e No .. 5 is based o n t hree additional Uum~.,; b eing bl.!1lt 1.n add 1t 1on to exJ.s t 1 niJ Entjlewood Dam. •rhe,;e dc:.1n .~ ;m ul cl bt! !Joll:;1 Pi t:.!nl.ic:0 , and licrr.y Dams . 'i'he cons t r uctio n fur.ds for lloily Dam re h eing held in "· os<.:ro w acco unt by the Urba n Dr ain age and Flood Control D.is tJ..~ict . Pre ntice and Berry oam J.. ·.•:e r ~ r,s timateci i.11 t:he 19 ·,4 report based 011 1 97 3 p i:ice s . Sinc:e th e Se:lliirlls & G1·i.gy e~tirnut:c:t; \•1<.:.1.l) based c,11 197 '/ pr .u:L!s , Ll,e l~'/4 c:~.t j- m tes have been infla t ed al ui per unnu m for fou r yei,r~. 'J 'hu>1 , i:he 1977 e st imated cost c,[ thes,o t wo dnms is $1., 390 ,420 . Tht> Urbnn Dra in age and Floorl Control llist ri ·:t ha d A good fina~c i ~J -3- I I ~x periencc when the Englewood Dam improvements we re m3Ue al ._11. cos t we ll under the estimated cost at that time, Hopefu lly, th in f i nan - cial experience would carry over to th ese futur e dams. The Se llards• Grigg scope of work did not include looking at any other improvements outside of Englewood, '£he 1974 study did t:hia ba sed on the six dams concept. Portions of the o v erall proj c,c;t beyond Eng lewood identified in the 1974 study i'lro othe r ch,rnr,el. improveme nts on I,ittle Dry Creek ,111cl Greenwood Guleh incl u ding Ii better pliysic.:ul co nn e<.:t io1~ b c l wccm t h e two eu~~L uf C J..uksu n. No 11 e of these improvements have been incl uded i n th e estimates except for the c onstruct.io n of Prent.ic e ,t11cl Be r.ry dauw. Other Co n siderations A val i cl argume nt ag a inst Alternative No . 5 i s thot it requi, . ..,, the estima ted expenditu re of $1 , J9 0,~20 to con str uc t t.wo dams Lu reduc e the estimated cos t of th e d ~tention pond wi thin En g l ewom , b y $31 6,15 ~. How ev er, t he larger dete n tion panel i n Alteri ,, t i v "' No. 2 is "very tight " and barely a deguate for t h at propo sal 11 hi J.c • the s maJler dctent :011 pond of Alternative No. ~ i s a p rop eJ ·Jy ~i.~\ltl element of th is Alt er native. 'i'he .::iclcli tional damn offer u.dcl itiull,d o ra te ct ion to c1nyone down str.eam f:1·o m them wh en ( load flows t·.I\C l'a:ll ln magnitt1de tl1e antici11aled l OU-year o vc nt. ,\lternative !•lo. 5 is similar ·to Alt~rnatives No.~ a nd J in t l1 : ,976 report in that t h ey a ll st.ill rnly on a c )u;,e,c] conrtu it llicl, I'.': fixc•cl cap a c.:jty to l1tt1t ,11Q tiw pu-il~ r uno ff. 'l'liu ::;, ~"hen IH·:,1k lUtld r-u nof( c.:omcs down Lhc: ch.i11n 1?J .·.•J1it..:li excl.!ucb Liu~ clc:s ilJ n ca JMl'lt y , t.he runoff flow in exce!;;.s of L!1e design cnpacily o f t he c.:l osc.:d conduit i iiUS t travel uver lanc1 . Jh~ 1.·isk al~o c:x ists th?tt l:hP. clus t:U conduit rr1u y bC-!COrnc p l ll ~itJG d or pnrl:ia l ly pluyged wh ic l1 irll.:.t.·eas;e~ :.:!.<;: :1c..:u u·1c.r]and. l'n,1;ert1e.s wichi.11 t l1e exi~t i 11 1.J fluoc:1 vl.:d11 ·.:oulcl be subJect to damage und er these circ umst a n ces . So:e: t.:.uuc;hl •~huuld l;c• qiv1!i1 l •. ll11· u 1 timale :-;1~l11l iu11 . 'l'li~.,,1. i~, :..nYt hing less th i:1n re-l.:!5LdbU ~:1:.nu ,.111 op1:n r oute fer a y tloud fluw is provid ing an i termedia t e solution . Alternat i ve No . ~ w~~ id~11t i ~i ed as the a lter native which wo uld achieve the objective of rc- :;r.:::ut . .:..ng an open t.:l1<1r111ul ·coutu. 'l'!1..! Cil:y s !1 ou)d mct intain n t!}'C: l.O t!.e future even L11crngh it · 1.s ,i pi:c:st!11l. need f:or a sol u t.i v.i L:.t;l. .. s tar l1.!s~1 reuclli119 u11~ _1e:rht:ps displ .. c;C:!n fewc:H" p oop.l e t n .. 1 11 r::lLl(· ~_,f the upcn c!l21ii.r>l r oul1•~; (it-'ti necl l u J\l l1-•r1 ,r1t-ive Ho . 4. Han ... r..:.Ll<· _:;n:uc.:tU!'l:!i [_; d~ UJ;{ ,~u .. 1uiU; li .. JV(.! Ll!Ld .i.i,.t.1.c dt.:n . i'l l live::;. ~·he ..:.::: i.sting co11du1c cuu ld bt~ ... :..i!:ll!lll:Li to }wve a li.fe of lOl~yei\rr,. r:·n ·Js i 2 __ t h c:1~ be en in exisl:encl.: ct!)oul: 15 ye ctt s , i t couJd bt· .. · ... :: l~I tn 1 :. ,I ;111ol-.lir•1· or; Y('!J"'. Lill Ir-Dry Cr cc:i: i dld G1(• '1 1' . .'th.Jd Gu lci1 u1·e goon exarnp.lc~.> UL 1.·1.vvi: c.:lia 1111 c.:ll;j wld c.:1 1 h a\le Ue en ,i.1 .... u1 r,d nnd ub1 l teru.tt!c1 by mall tl11:ongl. yi.:..1.cs at: l a u d u,~v ~lupmtut , J~tt.vli t..:iwn'jt: from l:he: c.-c.:ginllt 11.:i~ 111..llle l.!n. 1wx t ~0 J.u tion more t]lf(i l:u !t, ,.t lLc.• 11! tliv li!l· d ll1v•:· ,l 1uc :Lun:J..1 1 wl1.il \1i11 !J..:· d OHl• Ll 1t·11· Th e benefit-cost ratios must be s upplemented by a set o f enviro, - me ntal and socia l factors which are crucial to making the final de- cision . The following surranarizes som!! of tho advantages and cliG- advantages related to Alterna tive No. 5. Alternative No . 5 -Flow Reduction through Detention Storay-, witll i,, Englewood and Four Dain s Outside Eng lewood Advantages: l. 1111 the advantages listed for Al ternative No . 2 in the 1 976 repo rt are a pplicable. 2. This solution becomes more multi-juri sdic tional with the ~c1 ,1 i .. tional proposed dams outside Englewood. Urban Drainage and l'l ood Control Distric t, Greenwood, and Arapa ho e Co un ty h r,c ,11,n· involv ed . 3 . By chan ging diversion loca t i ons from ne ar South Pearl Str,,c-l to the east side of South Clarkson Street, the reni.1.i.11i.nq I".,,,,,. l , nor th of the c han ne l , we!-3t: of Clarkson Street is remc,vcd [1u111 the flood plain , (This would be a new advant age for lllt er n a l:, vv No . 2 also .) t1. /\11 the proper t ies c:lony Gnrnnwooll Gulch Uuwnst1l!anl iru11\ 11 1·....:!1 1 L i.c.:L and Berry Dam s to Littl e Dry Creek wou l<I receive som<· 1,-vc• I of flood protection, S . 'J1le d ept h and area of tlle proposed delu11Lion pond .:\t I JH: 11 LCJh school athletic f i elds wo u ld be reduced . •rh e ,iver<19,• w ,urn,,I,,cl depth of cut on school p roperty wo uld lie apJJroximately ciy llt foet , C . Antici pated design p roblems at tile detention pond such a s pump- i ntJ ground water ~ho uld tJc> el :i11li.n.:ltcd. 1 . i,ntici at:ed peak 100 -year flood flows rcachiny En glewood would be reduced by t he addi tiona l s torage outside the City, Disadva ntag es : 1. All t he disadvantages listed for Alterna t i ve No. 2 in the J.9'/6 report are appli t·<lhl.Cw ~-hcquisition o[ addiLionnl (p rusently und eveloped) property side the City would be req u Ln,rl for construction of d~.ni,,. 3, th ~ addiLion of P~entice and De r ry Dams adds' $1,0 74,26G to the cost of the project. and reduces the benefit/cost r<1tio for !::nc;l ewoud from G. 7'/. tu 5. 73 O !\ the grass lined o ption. I Co st Summary '!'he summar y of the cost estimates i s a s follows: Al ternative No . 5 Grass-Li ned Channe l Concrete-Lined Chann ~I Reach 1 Reach 2 Reach 3 Re ach 4 Deten ti on Pond P:c en tice and Berry Dams $802,957.00* -0- 2,117 ,061.00** 1 ,235 .316.00 1 ,3 67,355.00 1,39 0,420.00 Totill Estimated Proj ect Co s t $6,9J.J ,109.0 0 Cost of reach if box is extended north •• Cost of reach if box is extended south ••• Cost of reach if box is ex tended south Estimated Annual Mai ntenance Exoe ns e Beneiit-Cost Ra tio $42 ,3 3 0 .0 0 5. 7 3 $802, %7. 00 -o- 2 ,0 46 ,913.0 0*" 1,ou ,1 ,~.ou 1,367 ,3 ,5.00 1 ,39 0, ~20~00 $1 ,277,6 51 .U ll 1,91 0, 1.-a .00 i',OJ~, J~B.UU ~,2 , ]OU. IC rl • 7(, ':'o r ecap t he cost sumn .arics of all the d i ff e re n t: c11 , ,•cncttivt ·i, under con s id eration, the fol l owing t a ble• ref:let.:ts Liiv v :·;1 i111,lll't1 c·ui,l .• .,~ reported in th l! J'rJG ~•t ud y or. the s upplcmc 11l c:11 ti t l1 ·d l'rojv, 1 l'u~~l. Brea kd0'.~1ns , June 19 7 7 , w!1i ch :nodifl ed and upcl.Jted e:-.Li111 .. 1Lc-s l 11 l l 1c..• 19 76 study . Th e doll ars i n the, t able are 197 '/ d o ll ;11 ·s . G~Jss -Li11ed Ch~nn e l t\1 1.:ernu livc !lo . ) .· .. :t:rnntivc l~u . l $~,~~l,J5 ~.0U _.,:-,e:cc.aLvee ::o . 3 6 ,582 ,~78.GO ~-eerna tive No . 4 7,337 ,673 .00 ~!~e rnative No . 5 6,913 ,109 .00 ".cCa 1 -Eilingson Morril 1 " .... Cone re Lc>-Li.ned Ch annel S!:t ,UJB ,8 4 ).0U G,661 ,94 9.00 ·1 ,1~9 .118.00 G,625,420.00 6,63 ~ ,980 .0 0 l!o t 1;1 viab le u terniltiv <~ for t:ump;1r ison bL1 L:iHIS l• 1 t ref lec te:. .. l1 ~ "d.'1 .:.nothins 11 app.1:oach. ::ot Jn option . -G - L!Ti'L [ OR Y CHEEK t-LA N ... ... ... . ... I t 11 11 r DRY cn ro, ~~-,-,,-,-,, • f•;(j\ [ .~O:>L' -. -· . . • l'/\ I -~:. '•l~ . . -· , J ~-·;:,, hl H RN AT IV E ::5 -,1 1 _--l:l?:-n..,,.-,..· ~•-L "·-$. ' 111 -· ·11 •, 1 i·: F i O \'i' 1,cnuc1 1ow 11i r.-o uG,, 1' .:,,f : -50\(<"'-':'lV : "-• '" ,,, , ; , . 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'I It• ! i I •if I 1:11,, ·::i:1 01wl,.J° .1.,p-;i• ., 4' ·i I• i:'!!1i/; :;;1, ·:;:i;;'i/' .r,, I 1:;;::!1/i:• ,J