DISTRICT HEATING & COOLING DISTRICT SYSTEMS

Transcription

1 DISTRICT HEATING & COOLING DISTRICT SYSTEMS rd LR T M Us 7 Combind hat and Solar rmal powr plant lm 30 lm Ma U ar s l Un rsi s r 7 a V s l r U ar rosct tr M o l M s olm alc orlin s YM o U r s ton Bar M M a l C o l M s olm alc s YM o U r s l r t h o r n t o ns t s LR nc a hu art h o r n t o ns t s rosct tr ton Bar 7 t h a V s Enrgy transfr Stam rvic pip ation T MlBo Urn orlin MlBoUrn LR Enrgy transfr ation T Sourc: Evr-Grn Enrgy Mr a l d s t ru s ty dbf o r d s t s ary Stam rvic pip Snow mlt Mr a l d s t B d F o r d s t s nt M B d F o r d s t s sai s 4 s B d F o r d s t s 7 t h a V s 7 t h a V s r i s t s n ty - Futur Buildings MINNEAOLIS MINNESOTA iv sid Y Snow mlt Thrmal orag Un rd rd rospct ark nc r riv r riv M I NNEAOL I S M I NNESOTA l iv Yal - Futur Buildings s r Thrmal orag Biogas 4 s lco 30 Ma nt n Clar ary Yal rospct ark nt M Biogas lco Ma sid Clar r i s t s n o t a r io s t sai l dartmou l Solar rmal rsi l dartmou l scal: 1 = t h a V s rys Ma nt sai rys Y FUlton scal: 1 = 300 twa Y sai 6 FUlton Combind hat and Chillr powr plant 9 t h a V s sx nsi tra law ar Chillr Us 6 oak d sx Wa hat rcovry M twa Y rca 7 nsi int d law ar tra Utilization of currnt production as in dirict.. Wa hat rcovry Boilr 4 Conncting to Univrsity of Minnsota s xiing dirict nrgy sym. o n t a r io s t rca Co and tchnical fasibility of rving dlawar dirict nrgy sym s nrgy production nds rough following mchanisms: oak 4 dlawar Summary diagram of potntial dirict hating and cooling sym componnts providd by Evrgrn Enrgy. Boilr rd LR int Quantifid currnt and futur building nrgy nds, as wll as idntifying if any of buildings hav or will hav nrgy production as at may b intgratd into a dirict nrgy sym. A localizd nrgy production facility possibly at or nar futur Surly sit. T 3 t 3 Analysis of load at could b rvd in Ara in nxt fiv yars, as wll as ovr nxt twnty-fiv yars, including a broadbacon s rviw of xiing buildings currntly in Ara, and xpctd nw building conruction ovr nxt twnty-fiv yars. Evr-Grn t diributd a building survybaco ton xiing building ownrs in Ara which hlpd facilitat data collction for xiing building data. An valuation of dirict hating and cooling options was providd by Evrgrn Enrgy and includd following: Minnapolis. aul Sptmbr, 013 Dirict Syms & Grn Four Concpts Minnapolis. aul Sptmbr, 013

2 DISTRICT SYSTEMS BACKGROUND INTEGRATION OF DISTRICT HEATING SYSTEMS DISTRICT COOLING OSSIBILITIES Dirict nrgy syms produc am, hot watr or chilld watr at a cntral plant. This nrgy is n pipd undrground to individual buildings for spac hating, domic hot watr hating, and air conditioning. As a rsult, individual buildings rvd by a dirict nrgy sym do not nd ir own boilrs, furnacs, chillrs, or air conditionrs. Buildings connctd to a dirict hating ntwork rciv a rliabl hating rvic wi abl rats du to incrad ful flxibility and fficincis. Or valuabl bnfits: Improvd nrgy fficincy Enhancd nvironmntal protction Ful flxibility btwn fossil and altrnativ ful options Ea of opration and maintnanc Stabl nrgy rats Rliability Comfort and convninc for cuomrs Dcrad lif-cycl cos Dcrad building capital cos Hot watr dirict nrgy syms typically consi of a cntralizd production facility, diribution ntwork consiing of supply and rturn piping, and consumrs of rmal nrgy. COMBINED HEAT AND OWER U OF M) Combind hat and powr CH) is a vry fficint procss in which wa hat from powr gnration is capturd and ud for hating. STEAM TO HW ENERGY TRANSFER STATION Similar to intgration wi CH plant, incorporating an nrgy transfr ation wi Univrsity of Minnsota s xiing am diribution ntwork can provid anor sourc of hot watr to ntwork. BIOGAS As an altrnativ to fossil fuls, biogas could b gnratd rough anarobic digion of spnt grain from Surly Brwry and or biodgradabl matrial. SOLAR THERMAL AND CH Solar rmal panls can b inalld on building roofs, xiing silos, and opn aras to captur sun s nrgy and u it to supplmnt nds of domic hot watr and building spac hat. WASTE HEAT Combind Hat & owr CH) is on approach to capturing wa hat. This unud nrgy can also b capturd from indurial procss or boilrs and utilizd to supply a dirict hating ntwork. SNOWMELT In cold climats, snowmlt syms can b addd to sidwalks, walkways, and rts to liminat snow and ic build-up. By utilizing low-grad hat for a snowmlt sym, snowplowing and snow mlt chmicals can b rducd or liminatd. Dirict cooling is procss of diributing chilld watr from a cntral gnration sourc for cooling and air-conditioning. ELECTRIC CENTRIFUNGAL CHILLERS An lctric drivn chillr utilizs lctric nrgy to gnrat chilld watr for cooling purpos. FREE COOLING Inalling a chillr wi a fr cooling function allows chillr to oprat wiout running its comprssor during crtain tims of yar. ABSORTION AND ADSORTION CHILLERS Absorption units can b drivn by wa hat and low-grad hat, such as solar nrgy. THERMAL STORAGE Chilld watr orag allows chilld watr to b gnratd and ord during non-pak lctricity priods. Intgratd community nrgy syms utiliz multipl nrgy sourcs and tchnologis to ffctivly mt currnt and futur nrgy nds. Thy offr a mix of fossil fuls and rnwabls and rly on an ffctiv dirict hating and cooling infraructur Improvd architctural dsign flxibility THERMAL STORAGE SULEMENTAL OR SATELLITE BOILERS Incorporation of rmal orag offrs a uniqu opportunity to rpurpo xiing grain silos to or hot watr. Along wi boilrs inalld at a cntral plant, satllit and supplmntal boilrs can b incorporatd. Th can b dispatchd during pak or low load priods and provid gratr sym rdundancy. Dirict Syms & Grn Four Concpts. 3

3 DISTRICT HEATING AND COOLING DISTRICT SYSTEMS INTRODUCTION Th rospct ark ara of Minnapolis is on vrg of undrgoing a transformation, drivn in part by upcoming art of Grn Lin light rail transit. This ara has bn idntifid as a potntial cutting dg community at could rprnt an intgratd approach to all four ky attributs of a haly, riving suainabl community rarch and innovation, cultur of crativity and larning, nvironmntal rsilinc and suainability, and an activ, livly public ralm). SYSTEM VISION Th vision for rospct ark community nrgy sym is for it to bcom an intgratd nrgy sym, utilizing rnwabl fuls, multipl nrgy sourcs, and innovativ tchnologis to rliably mt community s nrgy nds and provid rsilinc for markt volatility of fossil fuls fuls. This intgratd nrgy approach valuats all sourcs of nrgy wiin a community and optimizs sym fficincy by rducing wa and rving nds of community wi local rsourcs. In rospct ark, it has bn idntifid at dirict hating sym could intgrat combind hat and powr, wa hat rcovr, biogas, hot watr orag, solar rmal and snowmlt syms, along wi traditional gas-fird boilrs to mt nds of ara. Wi rgard to dirict cooling, vision for rospct ark includs intgration of chilld watr orag wi adsorption or absorption cooling, fr cooling, solar cooling and traditional lctric drivn chillrs. Th rospct ark Vision Map pag 08) provids a visual rprntation of how rospct ark s intgratd nrgy sym could oprat. ha I of Implmntation Through fir pha of major dvlopmnt, ara is xpctd to add 3.6 million squar ft of mixd u dvlopmnt. rospct ark community ladrs hav idntifid fir pha of dvlopmnt to occur primarily along Four Strt SE and Univrsity Avnu, in btwn Malcolm Avnu and 7 Avnu SE. This dvlopmnt is xpctd to occur ovr nxt vn to tn yars. Th purpo of is documnt is to idntify a modl for rving ha I cuomrs whil ablishing an intgratd nrgy foundation to vntually achiv vision for rospct ark community. ENERGY USAGE Th nrgy usag for ach building was imatd undr propod ha 1 scnario. Tabl 1 provids building typ, squar footag, and imatd hating and cooling loads of prospctiv ha I buildings. Th individual loads wr ud to imat xpctd load of dirict nrgy sym, along wi diribution sym sizing and initial capital cos for dirict nrgy sym. Th total imatd ha I annual hating and cooling loads ar 7,000 MMBtu and.4 million ton-hours, rspctivly. Th anticipatd pak loads, bad on 1,700 hating full load hours and 900 cooling full load hours ar 44 MMBtu/ hr and,700 tons. Th numbrs will b utilizd to imat siz and co of initial cntral plant. SNOWMELT SYSTEM In addition to providing comfort to buildings, ha I could also includ inallation of a snowmlt sym for community. Th building to building snowmlt sym would crat a uniqu xprinc on 4 Strt SE and liminat nd for snow rmoval, snow plows, and introduction of salt or or chmicals along at corridor. Snowmlt syms provid communitis around world wi a mchanism to maintain a riving cntral dirict roughout wintr, rgardlss of war conditions. In rospct ark, snowmlt sym could xtnd from building to building along 4 rt. Th wid of snowmlt sym was assumd to b 80 ft and it is projctd to xtnd a lng of 1,700 ft from 7 Avnu SE to Malcolm Avnu SE. Th imatd co for snowmlt is $1. million. DISTRIBUTION Th ha I hot watr and chilld watr diribution syms includ approximatly,000 trnch ft of rvic and main piping for ach sym. Th hot watr pip sizs rang from 3 to 8 inchs in diamtr and chilld watr rangs from 4 to 1 inchs in diamtr. Th projctd co for hot watr diribution ntwork is $4 million and chilld watr is $3.3 million, as rflctd in Tabls and 3. Coordination of is work wi or dvlopmnt in ara can offr an opportunity to rduc inallation cos by as much as 3%. Figur 1 provids on possibl rout for initial diribution sym, alough actual routing will b dvlopd onc a mor dtaild dvlopmnt plan is ablishd. Tabl 1: rojctd ha I Buildings and Loads Squar Footag Hating Cooling Trnch Ft rojctd Co Main Lins 4,000 $ 3,00,000 Srvic Lins 70 $ 800,000 Grand Total 4,70 $ 4,000,000 Trnch Ft MMBtu MMBtu/hr Tons Ton-hrs Commrcial/Rtail 10,000, ,000 Offic 10,000, ,00 Rsidntial 160,000, ,000 Rsidntial 160,000, ,000 Rsidntial 80,000, ,000 Rsidntial 80,000, ,000 Arts Cntr 0,000, ,000 Rsidntial 10,000 4, ,000 Rsidntial 10,000 4, ,000 Rsidntial 160,000, ,000 Rsidntial 160,000, ,000 Rsidntial 160,000, ,000 Rsidntial 160,000, ,000 Rarch 0,000 10, ,00 Rsidntial 160,000, ,000 Total,10,000 74,93 44,680 rojctd Co Main Lins 4,000 $,700,000 Srvic Lins 70 $ 600,000 Grand Total 4,70 $ 3,300,000 HEATING snowmlt $1,00,000 COOLING,41,000 Figur 1: ropod ha I Diribution Rout, cloudd aras run along Cntral Corridor Light Rail. Actual routing is to b dtrmind in nxt pha of dvlopmnt.. 4 Dirict Syms & Grn Four Concpts diribution hating) $4,000,000 diribution Cooling) $3,300,000

4 RODUCTION Th ha I hot watr sym is projctd to includ r 3) 19 MMBtu/hr. MW) boilrs, diribution pumps, and miscllanous rlatd quipmnt. Th sym will rquir approximatly 3,400 squar ft and has imatd projctd co of $1.6 million, not including co of building. Th ha I chilld watr sym is projctd to includ r 3) 1,00 chillrs, chillr and diribution pumps, cooling towrs, and miscllanous quipmnt. Th chilld watr sym will rquir approximatly,700 squar ft and has a projctd co of $.6 million, not including building. OINION OF ROBABLE COST Th total projctd capital co for initial ha 1 dvlopmnt is shown in tabl 4. Th projctd cos ar bad upon Evr-Grn Enrgy s pa xprinc in conructing similar syms as wll as working wi local conruction companis. Th opinion of probabl co accounts for cntral plant quipmnt, diribution sym, and snowmlt sym. It dos not account for co of ach cuomr building intrfac and HVAC sym or actual building. IMLEMENTATION Implmntation of ha I of rospct ark dirict nrgy sym will rquir significant focus across multipl componnts. To rach ovrall vision, nxt ag of dvlopmnt should includ finalization of a businss plan for sym, along wi finalization of or various lmnts of sym s ructur. In ordr to gain projct financing, following aras will all rquir mor significant focus: Additional dtail is providd in schdul diagram on ag 7. Businss Structur, Oprating Modl and Businss lan: Th organizational ructur of businss will nd to b dcidd upon and ablishd. Govrnanc of businss and how it will b opratd and managd will also nd to b ablishd. A businss plan ablishing ratgic dirction of businss should also b ablishd. Financing Stratgy: Th financing plan for businss nds to b ablishd so at dvlopmnt priod activitis may b gard toward nds of financing ntitis. lant Location: Th location of initial nrgy cntr will nd to b dtrmind, prfrably somwhr nar ha I cuomr buildings and wiin anor ructur such as a parking ramp). Cuomr Contracts: Th ructur of nrgy Figur : Gnral plant layout Th total xpctd siz of cntral plant is imatd at 9,100 squar ft. rat and trm of agrmnts will nd to b t. Th nrgy rvic agrmnts will also nd to b draftd. Cuomrs Signd: Cuomr proposals nd to b dvlopd bad upon nwly ablishd contracts. Th ha I load will also nd to b signd to contracts to support projct financing. Sym Expansion lan: Th rospct ark akholdrs and businss should dtrmin what a prudnt grow ratgy for sym byond ha I of implmntation might b. Dsign: Dsign of sym will nd to b compltd nough to support curing of prmits, amnts and lump-sum conruction prics. Franchi or Eamnts: Th businss will rquir approvals to rout diribution lins rough public right of ways and across privat proprtis. Conruction Contracts: Contracts for all quipmnt and conruction will nd to b signd prior to projct financing bing curd. Community Outrach: Th businss should dvlop a rong rlationship wi local community and advanc an outrach program at maintains community akholdrs as partnrs in sym dvlopmnt and managmnt. Th amount of tim rquird to finaliz plans for ach of componnts will b dpndnt upon a numbr of factors, bo intrnal and xtrnal. Rsidntial 160, ,000,360, , ,000 Rsidntial 160, ,000,360, , ,000 Rsidntial 160, ,000,360, , ,000 Rarch Rsidntial 160,000 0,000 10,600, ,000 17,00 Rsidntial Rarch 0, ,000 10,600, ,00 144,000 Rsidntial Total Total 160,000,10,000,10,000,360 74,93 74, ,680, ,000,41,000,41,000 Tabl : Hot watr diribution probabl co Trnch Ft rojctd Co Trnch Ft rojctd Co Main Lins 4,000 $ 3,00,000 Srvic Main Lins Lins 4, $ 3,00, ,000 Srvic Lins 70 $ 800,000 Grand Total 4,70 $ 4,000,000 Grand Total 4,70 $ 4,000,000 Tabl 3: Chilld watr diribution probabl co Trnch Ft rojctd Co Trnch Ft rojctd Co Main Lins 4,000 $,700,000 Main Lins 4,000 $,700,000 Srvic Lins 70 $ 600,000 Srvic Lins 70 $ 600,000 Grand Total 4,70 $ 3,300,000 Grand Total 4,70 $ 3,300,000 HEATING HEATING snowmlt $1,00,000 snowmlt $1,00,000 COOLING COOLING DISTRICT SYSTEMS Tabl 4: Opinion of robabl Co for ha I Dirict Enrgy Sym Th hating and cooling syms hav bn pricd out paratly and in actuality may shar som of inallation cos rducing ovrall capital cos. diribution hating) $4,000,000 diribution Cooling) $3,300,000 diribution hating) $4,000,000 diribution Cooling) $3,300,000 roduction hating) $1,600,000 roduction Cooling) $,600,000 roduction hating) $1,600,000 roduction Cooling) $,600,000 Hating Subtotal $7,100,000 Cooling Subtotal $,900,000 Hating Subtotal $7,100,000 Cooling Subtotal $,900,000 nginring 10%) $700,000 nginring 10%) $600,000 nginring 10%) $700,000 nginring 10%) $600,000 gnral Conditions 1%) $1,100,000 gnral Conditions 1%) $900,000 gnral Conditions 1%) $1,100,000 gnral Conditions 1%) $900,000 Contingncy %) $1,800,000 Contingncy %) $1,00,000 Contingncy %) $1,800,000 Contingncy %) $1,00,000 Total $10,700,000 Total $8,900,000 Total $10,700,000 Total $8,900,000 Hating and Cooling Total $19,600,000 Hating and Cooling Total $19,600,000 Dirict Syms & Grn Four Concpts.

5 UBLIC UTILITIES DISTRICT SYSTEMS WATER NETWORK SANITARY SEWER NETWORK WATER NETWORK Minnapolis Watr provids domic and fir protction watr rvic in projct ara. A nw 16 watr main was conructd in Univrsity Avnu SE from 9 Avnu SE to a to City limit wi CCLRT rojct. Thr is xiing 16 watr main from 9 Avnu SE to a 48 transmission watr main in Oak Strt to w. Thr is an xiing 16 watr main in Malcolm Avnu SE from Univrsity Avnu SE to Transit Way. Thr is xiing 16 watr main in 4 Strt SE from Malcolm Avnu SE to w vntually conncting to 48 transmission watr main in Oak Strt SE. This watr main was modifid as a part of CCLRT rojct. Thr is gnrally adquat watr main infraructur in projct ara. Th futur xtnsion of 7 Avnu SE to nor may allow for xtnsion of trunk watr main nor of Transit Way looping back to Malcolm Avnu SE. Thr ar no plannd improvmnts in projct ara. Minnapolis Watr is doing moly rhabilitation work on watr main, including cmnt lining. Th rhabilitation work is gnrally coordinatd wi CI roadway projcts, lik Grn Four. Thr is adquat domic watr supply to projct ara and propod dvlopmnt. Minnapolis Watr fls at fir dmand may b a limiting factor for dvlopmnt. Confirmation of fir flow is rsponsibility of dvlopr. Minnapolis Watr liks to on hydrant at ach intrction wi spacing not to xcd 600 ft. Each nw building gnrally rquirs on domic and on fir rvic. Combind rvics ar allowd, wi domic rvic siz not xcding a quartr of combind rvic siz. Sparat rvics ar prfrrd bcau y gnrally provid for bttr watr quality. Th City of Minnapolis ublic Works Surfac Watr and Swrs Dpartmnt provids sanitary wr rvic in projct ara. Thr is a larg trunk sanitary wr sym in Univrsity Avnu SE at drains w to a 96 MCES sanitary wr intrcptor in Oak Strt SE. Th trunk sanitary wr is 33 brick from Malcolm Avnu SE to 9 Avnu SE, 39 concrt pip from 9 Avnu SE to Avnu SE, and 4 concrt pip to Huron Boulvard. This trunk sanitary wr sym is gnrally rving projct ara, wi 1 clay to 4 clay latral trunk sanitary wrs. Th latrals ar sizd to accommodat grow ovr currnt land u. Surfac Watrs & Swrs dos not hav any capital projcts plannd in projct ara. Thy ar doing lining projcts and manhol rconructs, usually coordinatd wi or CI roadway projcts, lik Grn Four. Surfac Watrs & Swrs confirmd at r ar no condition asssmnts or known sanitary wr issus in projct ara. Th Rain Ladr Disconnct rogram looks at illgal roof rain ladr connctions to sanitary wr sym and rquirs disconncting of illgal connctions. It is not clar atus of rain ladr disconncts in projct ara, but dmolition and rdvlopmnt gnrally accomplishs disconncts. Sanitary wr is typically dsignd at cntrlin of roadway, wi watr main typically 10 ft off cntrlin. rivat dry) utilitis ar locatd wiin right-of-way and ar typically placd wiin a zon bhind curb. Joint trnchs combination of gas, lctric, communications utilitis - ar not typical in City of Minnapolis. A watr and wr dmand analysis was don for projct ara to compar to capacity of xiing sanitary sym. Th capacity of small latral trunk sanitary wr sym in projct ara is a 1, which as a capacity of approximatly 4.8 CFS. Th capacity of 39 concrt trunk sanitary wr in Univrsity Avnu SE at Avnu SE is approximatly 19. CFS. Th trunk sanitary wr sym in projct ara has capacity to accommodat SEWER IE NETWORK Watr lin Sanitary wr Storm wr Not: Watr ntwork information providd in is ction is for a purpo of discussion only. It rquirs furr work and rviw wi Minnapolis ublic Works.. 6 Dirict Syms & Grn Four Concpts

6 STORMWATER DISTRICT SYSTEMS 80 av rd itw ay wa sh 4 ri av r av or lin Th impact to Bridal Vil Crk BVC) watrshd was assd wi Floodplain / ormwatr modling of xiing and propod rdvlopd conditions. Barr prformd modling of 100yar flooding associatd wi propod conditions in BVC watrshd for propod changs to Grn 4 Strt and idntifid privat parcls for rdvlopmnt, incorporating watr quality tratmnt in four propod scnarios: Rsponding to concrns about climat chang, conrvation of quality ground watr rsourcs, as wll as urban cology, many udis sugg incorporation of Low Impact Dvlopmnt LID) ratgis as a guid to nhanc quality of lif in Amrican citis. 1A. Minimum Tratmnt Standard 0.4 inchs) applid to BOTH rivat roprty and Grn l trr itor Falcon hights ial rd rn c av r rd rospct tr n av 94 locations whr 80 saint aul w t rri to ria l rd 1867 HISTORIC WATER BODY 1B. Minimum Tratmnt Standard 0.4 inchs) applid to ONLY rivat roprty A. Maximum Tratmnt Standard 1.1 inchs) applid to BOTH rivat roprty and Grn 4 B. Maximum Tratmnt Standard 1.1 inchs) applid to ONLY rivat roprty WATERSHED 94 Figur 3.1 ; N Chang in nod 100 Yar Flooding d 0.4 in of infiltration Minimum tratmnt) in rivat only Ft grn 4 rt, Minnapolis, Minnsota MISSISSII WATERSHED MANAGEMENT ORGANIZATION MWMO) BOUNDARY Dirict Syms & Grn Four Concpts Barr n compard changs to xiing conditions flooding roughout ntir BVC watrshd. Th propod rdvlopmnt and watr quality practics gnrally rsult in dcrad flooding in BVC watrshd, mo significantly in ormwr ntwork adjacnt to Grn 4 Strt. Scnario A, Maximum Tratmnt Standard 1.1 inchs) applid to BOTH rivat roprty and Grn 4, rsults in grat flooding dcra in mo locations. Rsults ar shown in attachd figurs for all scnarios Flooding is liminatd Bridal Vil Crk tunnlshd ropod dvlopmnt 4 rt rojct ara Municipal Boundaris 3w ymour av W xplor how much of an impact dsign altrnativs xplord in Grn 4 dvlopmnt scnario can hav for hal of surrounding nvironmnt and hydrologic sym. av Barto riv ropod Condition Nod Flooding Dcra 0 Ft. 0.1 Ft. 130 total) 0.1 Ft. 0. Ft. 0 total) 0. Ft. 0. Ft. 0 total) gratr an 0. Ft. 1 total) 6 Cla Exiing Condition Nod Flood Dp 0 Ft Ft. 101 total) 0. Ft Ft. 113 total) gratr an 1 Ft. 4 total) rovill lm Mal co av ms art hu way Minnapolis y willia sit pus tran sidn dartmou av Cam ontario ford int r Bd huron 7 Fulton wgat dr Bry saint aul r lawa robbins huron oak d av 9 av av Th 1867 Survy map from Mtropolitan Dsign Cntr s udy shows how Grn 4 sit sits wiin a largr ntwork of wtlands and BVC. As ara dvlopd into a rail yard and an agricultural diribution cntr, along wi xpansion of rt car communitis lik ropct ark and Univrsity of Minnsota, wtland was draind into undrground ormwatr pip which rplacd Bridal Vil Crk. av Our udy xamind possibl dvlopmnt scnarios along Grn 4 at can rduc rats and volum of ormwatr dirctly ntring into convntional ormwatr pip sym whil allowing maxim ground watr rcharg and improving watr quality. ing ton av Un iv rs ity av huron 1 sx ns saint Marys av Barr Footr: arcgis 10., :44 Fil: \\barr.com\gis\rojcts\3\7\1313\maps\rports\figur 3_1 ropod 1b Condition Changs.mxd Ur: K JM s tra Minnapolis pu Bacon washington av rc am av in t Grn 4, which which sits in Bridal Vil Crk pipshd BVC), is a part of Mississippi Rivr Watrshd at onc was filld wi larg wtlands, prairi, and a crk at ran rough sit and cascadd down to Mississippi Rivr via Bridal Vil Watrfall. BRIDAL VEIL IESHED. 7

7 STORMWATER Apndix RATE CONTROL Co Eimat 10 Th City s ormwatr rat control andards for rdvlopmnt ar at rat of runoff gnratd in propod conditions for up to 100-yar, 4-hour vnt mu not b gratr an xiing conditions, unlss ara has bn idntifid as a problmatic flooding ara by City. Whil BVC watrshd dos hav som flooding problms and BVC tunnl sym is ovrcapacity in 100-yar vnt, discussions wi City ublic Works aff rvald at is is not a high priority flooding ara, and us would likly b subjct to City s andard rat control ruls. Eimatd Imprvious Conruction Eimatd Du to fact at BVC watrshd is Surfac Co pr CF Conruction Eimatd Lifspan alrady highly dvlopd and imprviousnss Tratd SF) Tratmnt Cos Dsign Cos Yars, n) quit high wiin propod Grn 4 and narby propod dvlopmnt, it is unlikly at rat control will b a significant concrn in nw $ 60, , dvlopmnt in is ara. Th City s currnt zoning rquirs nw dvlopmnt to rtain 0% of dvlopmnt for grn spac prvious), and du approximats nativ hydrology. Th propod andard dvlopd by MCA provids volum control tratmnt of 1.1 inchs of runoff ovr tributary imprvious surfacs. Th 1.1-inch andard is hraftr rfrrd to as maximum tratmnt andard. QUALITY Stormwatr Modling and Rsults Barr prformd modling of 100-yar flooding Itm Tratmn t Volum CF) Imprvious Surfac Tratd SF) Eimatd Conruction Cos Eimatd Dsign Cos Lifspan Yars, n) O&M rnt Valu Total rnt Valu rivat Tratmnt Enhancd Iron Co Rainwatr Gardn 100 $16.18 $1,618 $43 10 $1 $1,014 $,87 $9.46 $34 CF 6 Ovrflow ach $ 60, $ 6, $3,07.31 $3,07 Marion RWGs Roof linr $18, $1,891.9 $1,33.14 $1,33 Grn Roof ublic rmabl avmnt $ 7, $, $ 88.0 $1, $1,989 avrs Tr Co Trnchs Eimat $ 139, $ 13, $ $7,747.7 $8,648 Tr Trnch 10 associatd wi propod conditions in Annual Annualiz Total BVC watrshd for propod changs to Grn Eimatd Annual Annualiz Total atmn O&M O&M Total d Capital Annual 4 Strt and idntifid privat parcls Tratmn Imprvious Conruction Eimatd O&M O&M Total d Capital Annual lum Cos rnt rnt Cos, Co for rdvlopmnt, incorporating watr quality t Volum Surfac Co pr CF Conruction Eimatd Lifspan Cos rnt rnt Cos, Co CF) i=4%) Valu Valu i=4% 01$) Assumptions tratmnt in ight 8) propod scnarios: Itm CF) Tratd SF) Tratmnt Cos Dsign Cos Yars, n) i=4%) Valu Valu i=4% 01$) Assumptions Enhancd Iron Co Annual rivat Tratmnt Oprations Enhancd Iron Co 00 $16.18 $1,618 $43 10 $1 $1,014 $,87 $9.46 $34 CF F tons) Tons/1cf $K/ton 1A. Minimum Tratmnt Standard 0.4 Rainwatr Gardn 100 $16.18 Annualizd $1,618 and $43 10 $1 $1,014 $,87 $9.46 $34 CF $ 0 $3,07.31 $3,07 Marion RWGs inchs) applid to BOTH rivat roprty and 6 Ovrflow ach Dsign Conruction Capital Co Capital $ 60, Co Maintnanc $ 6, Total 0 Annual Co Unit Quantity $3,07.31 $3,07 Marion RWGs $18, $1,891.9 $1,33.14 $1,33 Grn Roof 1707 SF Linr $/SY $10 Quot for poly linr Grn 4 SEARATE Roof linr TREATMENT $18, $1,891.9 $1,33.14 $1,33 Grn Roof 1B. Minimum Tratmnt Standard 0.4 Rooftop ublic $ 7, $, $ 88.0 $1, $1,989 avrs Rain Gardns 1800 SF $14,400 $/SF $1,100 $ 1.00 $136,00 O&M/SF $10,00 $ $3,300 $13,900 80% 70% 8% to highly-imprvious natur of xiing inchs) applid to ONLY rivat roprty RWG rmabl avmnt $6,481 $43,08 $49,689 $ $6,16 7, $ $3,337, $9,463 $ 88.0 CF $1,901.16,670 $1,989 1,867,800 avrs $ 139, $ 13, $ $7,747.7 $8,648 Tr Trnch 1600 cf $/cf O&M/SF $ 0.0 conditions, it was dtrmind at likly only a fw A. Maximum Tratmnt Standard 1.1 linr Tr Trnchs $1,891.9 $18, $0,811 $ 139, $1,33 $ 13, $1,33 40 $ $7,747.7 $8,648 Tr Trnch privat parcls would nd rat control to nsur at propod runoff rats would not xcd inchs) applid to BOTH rivat roprty and Grn 4 ructurs ublic Tratmnt 6000 $, $1,700 $66,000 $7,00 $3,07 $4,400 $1,00 $3,07 $,00 80% 70.3% 81.6% xiing conditions. In locations, xiing B. Maximum Tratmnt Standard 1.1 7% to prvious covr is gratr an 0%, maning at inchs) applid to ONLY rivat roprty 4, % rdvlopmnt could rsult in gratr ormwatr rmabl avrs $9,700 $1, $1,989 to 30) CF - Nor Annual runoff. Th modl incorporats rat control at Barr n compard changs to xiing Tr Trnchs $13,006 $67 Annual $733 CF - Sou Oprations locations. conditions flooding roughout ntir BVC RWG on 4 $1,936 $1,906 $14,84 $1,830 Oprations $997 $,87 Annualizd and watrshd. Th propod rdvlopmnt TOTAL $0,00 $173,800 $194,000 Annualizd $14,900 and $4,00 $19,400 ign Conruction Capital Co Capital Co Maintnanc Total Annual Co Unit Quantity and watr quality practics gnrally rsult in Dsign Conruction Capital Co Capital Co Maintnanc Total Annual Co Unit Quantity VOLUME CONTROL dcrad flooding in BVC watrshd, mo COMBINED SEARATE TREATMENT $1,300 $94,800 $107,100 $10,00 $4,00 $1,000 80% 70.% 81.6% 14,400 $1,100 $136,00 $10,00 $3,300 $13,900 80% 70% 8% significantly in ormwr ntwork adjacnt rmabl Rooftop Rain avrs-30 Gardns $14, $1, $136, $10,00 $3, $13,900 3,04 80%,40 70% 3,360 8%,481 $43,08 $49,689 $6,16 $3,337 $9,463 CF,670 1,867,800 Tr RWG Trnchs $6, $43, $49, $6, $3, $9,463 CF, ,867 73, $18, Th City s watr $0,811 quality $1,33 ruls rquir at propod $1,33 to Grn 4 Strt. Scnario A, Maximum RWG linr on 4 $1,891.9 $8,397 $18, $,977 $64,374 $0,811 $7,937 $1,33 $4,34 $1,60 $1,33 CF 6000 privat dvlopmnt $66,000 rduc $3,07 total suspndd solids $3,07 Tratmnt Standard 1.1 inchs) applid to BOTH ructurs $66,000 $3,07 $3,07 $,800 TSS) $1,700 from $7,00 dvlopmnt $4,400 by 70% on $1,00 an annual $,00 rivat roprty and Grn 4, 80% rsults 70.3% in 81.6% ublic Tratmnt $,800 $1,700 $7,00 $4,400 $1,00 $,00 80% 70.3% 81.6% basis. MWMO has dtrmind rough prvious grat flooding 7% to dcra in mo locations. 7% to 4, % work at is City rquirmnt approximats 4, % $9,700 $1, $1,989 tratmnt providd by infiltration/filtration Stormwatr 30) Sparat CF - Nor Shard 43 Syms rmabl avrs $9,700 $1, $1,989 to 30) CF - Nor $13,006 $ $733 CF - Sou practics at captur 0.4 inchs of runoff from Tr Trnchs $13,006 $ $733 CF - Sou ,936 $1,906 $14,84 $1,830 $997 $,87 tributary imprvious surfacs. This tratmnt RWG on 4 $1,936 $1,906 $14,84 $1,830 $997 $,87 0,00 $173,800 $194,000 $14,900 $4,00 $19,400 rquirmnt dos not apply to City roads i.., a TOTAL $0,00 $173,800 $194,000 $14,900 $4,00 $19,400 1,300 rconructd $94,800 $107,100 Grn 4). $10,00 Th 0.4-inch $4,00 andard $1,000 is 80% 70.% 81.6% 700 hraftr 7000 rfrrd 9700to as minimum 88. tratmnt COMBINED TREATMENT $1,300 $94,800 $107,100 $10,00 $4,00 $1,000 80% 70.% 81.6% ,04,40 3, andard. rmabl avrs ,04,40 3, Tr Trnchs ,397 $,977 $64,374 $7,937 $4,34 $1,60 CF Th Minnsota ollution Control Agncy MCA) RWG on 4 $8,397 $,977 $64,374 $7,937 $4,34 $1,60 CF has dvlopd a highr tratmnt andard at Eimatd Conruction Co pr CF Tratmnt Annual O&M Cos i=4%) Annualiz d Capital Cos, i=4% Total Annual Co 01$) Assumptions. 8 Dirict Syms & Grn Four Concpts

8 STORMWATER MANAGEMENT OTIONS DISTRICT SYSTEMS 1. CONVENTIONAL - SEARATE SYSTEMS In convntional ormwatr convyanc syms, watr is tratd in ralm in which it falls. If rain falls on privat proprty, at proprty is rsponsibl for trating it, sam holds tru for public proprty. Thr should b no crossovr btwn ralms, tratmnt mu rmain parat. This is andard for many citis across glob. It offrs rdundancy and nsurs r is no gry ara of rsponsibility. rivat ublic R.O.W. CONVENTIONAL LUS - SEARATE SYSTEMS Similar to fir sym discusd, rainwatr is tratd in ralm in which it falls. Th uniqu diffrnc in convntional plus sym is at som small low-impact dvlopmnt LID) tchniqus hav bn initutd in public ROW. LID s such as rain gardns at tak watr from sidwalk and/or rt and trat it bfor allowing infiltration to occur. Again, rsponsibility rmains squarly onus of ach ntity. rivat ublic R.O.W Dirict Syms & Grn Four Concpts. 9

9 DISTRICT SYSTEMS 3. SHARED SYSTEM - RIVATE STORMWATER TREATMENT INSTALLED IN UBLIC R.O.W rivat ublic R.O.W Building off convntial plus sym, shard sym bgins to blur lins btwn rsponsibl party and infrs at w ar all rsponsibl. Crating LID s such as rain gardns nar dgs of proprtis allows for a portion of watr from public ralm to b tratd in privat ralm. Th privat ralm oftn has lss utilitis in plac an public ROW, which may allow for gratr dp of planting and bttr infiltration 4. SHARED SYSTEM BEST RACTICES - RESTORATIVE AROACH Th rorativ approach would showca b LID practics and tchniqus availabl. Diffrnt curb typs to allow watr to flow rough from rt, rain gardns and infiltration rips, prvious pavmnt, bioswals, and plant choics at riv on disruption caud by rain vnts and possibl anding watr at will accompany m. Th lin btwn public and privat tratmnt is narly rad in is xampl and rsponsibility is shard btwn city and privat ntitis. rivat ublic R.O.W. 30 Dirict Syms & Grn Four Concpts

10 STORMWATER INSTALLATIONS FOR RIVATE ROERTY AND UBLIC R.O.W OTENTIAL SHARED SYSTEM AROACH This vigntt dpicts a potntial shard sym whr privat ralm would captur som ormwatr via infiltrating plantrs and prvious walkways. Th public ralm would also captur and infiltrat ormwatr via prvious paving, curb inlts, and bo shallow and dp raingardns. All of LID s would infiltrat watr and dirct rmnant ovrflow to public sym. This approach taks much rain off of public sym du to amount of infiltration at is plannd. DISTRICT SYSTEMS Dirict Syms & Grn Four Concpts. 31

11 SUMMARY RECOMMENDATIONS DISTRICT SYSTEMS GREEN FOURTH As mandat to crat grat placs for popl not ju parks or rts or individual buildings) taks cntr ag, innovativ but td approachs bring ndd focus to ffctivly bridg vision to implmntation. W hav a gratr rsponsibility an vr to addrss issus of day, whr rlatd to dvlopmnt, nrgy, suainability, social juic, nvironmntal protction, or conomics all rlatd to sound citybuilding). Th rconruction of xiing 4 Strt profound mtamorphosis into GREEN FOURTH prnts a uniqu opportunity wiin rospct Nor Dirict to dmonrat our ability to oughtfully intgrat physical dsign faturs wi dirict infraructur. How to succssfully blnd a signatur dsign aic wi 1 Cntury functional fficincis. CONVENTIONAL BUDGET: $1.4 MIL. BASELINE UBLIC WORKS) TYICAL STREET SECTION + LUS STORMWATER MANAGEMENT STACKED SOLUTIONS... CLOSED LOO SYSTEMS Th adjacnt chart rvs to illurat in simpl trms) balin projct componnts and City projct budgt plus additional funding providd by Mtropolitan Council and potntial projct nhancmnts plus a fully intgratd syms approach, potntial projct nhancmnts and cos. Not: additional co valuation and or financial information has bn prpard by rospct ark 00, SRF Consulting Group, Chriina Smittn and or sourcs. CONVENTIONAL LUS BUDGET : ADD $00 K METCOUNCIL GRANT) + LUS INTEGRATED SYSTEMS BUDGET : ADD $3 MIL. RIVATE / UBLIC FUNDING). 3 Dirict Syms & Grn Four Concpts

12 DISTRICT SYSTEMS DISTRICT SYSTEMS Th rospct Nor Dirict is uniquly positiond to bcom an innovativ modl for suainabl rdvlopmnt du to its scal and adoptd vision for its physical transformation. Much as public ralm should b concivd in toto, dirictwid syms to manag watr and wa, harv rnwabl nrgy sourcs and promot hal and wllnss rough dsign should also b amlssly dvlopd in conjunction wi physical dsign of bo public and privat ralms. Clod-loop syms at a dirict scal ar gaining momntum globally du to significant advancs towards rgnrativ solutions, transcnding suainability bnchmarks in favor of rorativ outcoms and riving citis. Thr ar now numrous succssful xampls, allowing us to dirctly udy nw communitis at ar not only bautiful placs to b, but also progrssiv and rsponsibl dvlopmnts dsignd in dirct rspon to challngs of our tim. W rongly bliv at rospct Nor should advanc concpts, wi a willingnss to innovat... to bcom a dirict at dmonrats nw dvlopmnt concpts, provids masurabl outcoms at ncourag ors, and ill mts financial fasibility targts to dlivr succssful projcts. downtown Mls & rivr Viw nrgy production from vibration innowattch: arasitic nrgy harving avgn: aving sym at gnrats lctricity 9. lrt ation laza grn wall RESIDENTIAL COMMERCIAL ARKING ormwatr harving & u iconic Bldg. dirict cooling & hating Community gardn ormwatr infiltration for groundwatr rcharg ark & rcration RESIDENTIAL OFFICE COMMERCIAL ARKING roof dck Boutiqu hotl ormwatr harving & u solar powr vnt Cntr adaptiv ru RESTORATIVE CLOSED-LOO DISTRICT INFRASTRUCTURE SYSTEM ark Urban Living, Wrn Harbour, Malmö Swdn Solar array parking Cincinnati Zoo & Botanical Gardn Urban agricultur in Clvland OH Dirict Syms & Grn Four Concpts. 33

13 AENDIX. 34 Dirict Syms & Grn Four Concpts

14 WORKSHEETS, MAS & DIAGRAMS Dirict Syms & Grn Four Concpts. 3

15 SURFACE FLOW & 100 YEAR FLOOD Apndix Surfac watr flow Watr volum low >0. ft Watr volum mdium <0. ft, >1 ft Watr volum high <1 ft ft contour lin otntial Dvlopmnts ipshd boundary. 36 Dirict Syms & Grn Four Concpts

16 Apndix Stormwatr pip Watr volum low >0. ft Watr volum mdium <0. ft, >1 ft Watr volum high <1 ft ft contour lin otntial Dvlopmnts ipshd boundary Dirict Syms & Grn Four Concpts. 37

17 oak ri Bry oak ri Bry 0.4 INCH RAINFALL VOLUME REDUCTION --- RIVATE DEVELOMENT ONLY Apndix Barr Footr: arcgis 10., :44 Fil: \\barr.com\gis\rojcts\3\7\1313\maps\rports\figur 3_1 ropod 1b Condition Changs.mxd Ur: KJM Bacon washington av Minnapolis rivr rd sx Fulton ontario dartmou av Exiing Condition Nod Flood Dp 0 Ft Ft. 101 total) 0. Ft Ft. 113 total) gratr an 1 Ft. 4 total) huron huron huron 3rd av washington av intrcampus transitway Univrsity av av av dlawar 7 av 4 ropod Condition Nod Flooding Dcra 0 Ft. 0.1 Ft. 130 total) 0.1 Ft. 0. Ft. 0 total) 0. Ft. 0. Ft. 0 total) gratr an 0. Ft. 1 total) saint Marys av williams av arur av locations whr Flooding is liminatd Bridal Vil Crk tunnlshd ropod dvlopmnt 4 rt rojct ara Municipal Boundaris Barton av 9 av orlin av sidny l 30 av Malcolm av ymour av ;N Clarnc av Ft rospct tr Bdford trritorial rd saint aul intr Campus transit way 6 3w Minnapolis Figur 3.1 wgat dr rovill saint aul w trritorial rd Falcon hights Chang in nod 100 Yar Flooding d 0.4 in of infiltration Minimum tratmnt) in rivat only 94 grn 4 rt, Minnapolis, Minnsota 1 80 robbins Barr Footr: arcgis 10., :44 Fil: \\barr.com\gis\rojcts\3\7\1313\maps\rports\figur 1_1 ropod 1a Condition Changs.mxd Ur: KJM Minnapolis Bacon washington av rivr rd sx Fulton ontario dartmou av Exiing Condition Nod Flood Dp 0 Ft Ft. 101 total) 0. Ft Ft. 113 total) gratr an 1 Ft. 4 total) huron huron huron 3rd av washington av intrcampus transitway Univrsity av av dlawar av 7 av 4 ropod Condition Nod Flooding Dcra 0 Ft. 0.1 Ft. 146 total) 0.1 Ft. 0. Ft. 1 total) 0. Ft. 0. Ft. 0 total) gratr an 0. Ft. 1 total) saint Marys av williams av arur av locations whr Flooding is liminatd Bridal Vil Crk tunnlshd ropod dvlopmnt 4 rt rojct ara Municipal Boundaris Barton av 9 av orlin av sidny l 30 av Malcolm av ymour av ;N Clarnc av Ft rospct tr Bdford trritorial rd saint aul intr Campus transit way 6 3w Minnapolis Figur 1.1 wgat dr rovill saint aul w trritorial rd Falcon hights Chang in nod 100 Yar Flooding d 0.4 in of infiltration Minimum tratmnt) in bo rivat and grn 4 rt 94 grn 4 rt, Minnapolis, Minnsota 1 80 robbins Sourc: Barr Enginring. 38 Dirict Syms & Grn Four Concpts

18 oak ri Bry oak ri Bry 0.4 INCH RAINFALL VOLUME REDUCTION --- RIVATE DEVELOMENT + GREEN 4TH. Apndix rd av rd av intrcampus transitway intrcampus transitway Bacon Bacon washington av huron washington av Univrsity av 4 washington av huron washington av Univrsity av 4 Barr Footr: arcgis 10., :8 Fil: \\barr.com\gis\rojcts\3\7\1313\maps\rports\figur 4_1 ropod b Condition Changs.mxd Ur: KJM Minnapolis rivr rd sx Fulton ontario dartmou av Exiing Condition Nod Flood Dp 0 Ft Ft. 101 total) 0. Ft Ft. 113 total) gratr an 1 Ft. 4 total) huron huron av dlawar av 7 av ropod Condition Nod Flooding Dcra 0 Ft. 0.1 Ft. 11 total) 0.1 Ft. 0. Ft. 3 total) 0. Ft. 0. Ft. 4 total) gratr an 0. Ft. total) saint Marys av williams av arur av locations whr Flooding is liminatd Bridal Vil Crk tunnlshd ropod dvlopmnt 4 rt rojct ara Municipal Boundaris Barton av 9 av orlin av sidny l 30 av Malcolm av ymour av ;N Clarnc av Ft rospct tr Bdford trritorial rd saint aul intr Campus transit way 6 3w Minnapolis Figur 4.1 wgat dr rovill saint aul w trritorial rd Chang in nod 100 Yar Flooding d 1.1 in of infiltration Maximum tratmnt) in rivat only 94 grn 4 rt, Minnapolis, Minnsota Falcon hights 1 robbins Barr Footr: arcgis 10., :8 Fil: \\barr.com\gis\rojcts\3\7\1313\maps\rports\figur _1 ropod a Condition Changs.mxd Ur: KJM Minnapolis rivr rd sx Fulton ontario dartmou av Exiing Condition Nod Flood Dp 0 Ft Ft. 101 total) 0. Ft Ft. 113 total) gratr an 1 Ft. 4 total) huron huron av dlawar av 7 av ropod Condition Nod Flooding Dcra 0 Ft. 0.1 Ft. 111 total) 0.1 Ft. 0. Ft. 8 total) 0. Ft. 0. Ft. 6 total) gratr an 0. Ft. total) saint Marys av williams av arur av locations whr Flooding is liminatd Bridal Vil Crk tunnlshd ropod dvlopmnt 4 rt rojct ara Municipal Boundaris Barton av 9 av orlin av sidny l 30 av ymour av ;N Malcolm av Clarnc av Ft rospct tr Bdford trritorial rd saint aul intr Campus transit way 6 3w Minnapolis Figur.1 wgat dr rovill saint aul w trritorial rd Chang in nod 100 Yar Flooding d 1.1 in of infiltration Maximum tratmnt) in bo rivat and grn 4 94 grn 4 rt, Minnapolis, Minnsota Falcon hights 1 robbins Dirict Syms & Grn Four Concpts. 39

19 C ir il lv id a Br TRAFFIC & ARKING MA1: HASE 1. LAND USE ASSUMTION Apndix 3rd LR T 4 int rca 1 M nsit wa Y d sa V lco lm sain tm ary law ar tra Us lv il Cir Ma 6 sid 7 4 Br Y ida n l Un iv rsi sain s ary r U l nc ar s ty Clar tm 1 M int rca MalColM M lm 30 6 Ma lco sain sid n Y 7 1 tm 1 ary s 7 s nsit wa Y d tra 9 Us MlBoUrn Mrald ornton 4 orlin YMoUr olm alc T BdFord T 7 l r Yal LR hu art LR law ar rosct tr BdFord MA: FULL BUILD-OUT ton Bar 4 l Un iv rsi sain s r Clar tm ary U l ar ty 6 nc s rosct tr LR T Dirict Syms & Grn Four Concpts l r hu art ton Bar BdFord rd a

20 Apndix *All data rlatd to traffic has not bn approvd by City of Minnapolis ublic Works. Bfor moving forward is will nd formalization, validation, and approval. Dirict Syms & Grn Four Concpts. 41