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Finding of No Significant ImpactJune 13, 2013 As required by state and federal rules for determining whether an Environmental Impact Statement is necessary, an environmental review has been performed on the proposed action below: Project Willows Subdivision Stormwater Improvements Location City of Kalispell Project Number WPCSRF Project # C307191 Total Cost $512,350 The City of Kalispell, through a May 2012 Preliminary Engineering Report (PER), prepared by Morrison - Maierle, Inc. has identified the need to improve the storm water outfall pipe, the outfall structure to the Stillwater River and collection and detention systems for the Willows Subdi ' vision, which is located in southeast Kalispell. Flooding is occurring within the Willows Subdivision due to the undersized outfall pipe from the detention pond to the Stillwater River and improvements to the detention pond are necessary to stabilize the steep banks, which are sloughing into the pond and causing sedimentation and blockage of the outlet pipe. Moreover, the sediment that should be retained in the detention pond is discharging to the Stillwater River. Storm water flowing through the detention pond and the outfall pipe to the Stillwater River originates from the Willows Subdivision and off -site sources. A hydraulic analysis indicates that the outfall pipe cannot pass the 1 0-year storm even without causing flooding in the Willows Subdivision streets. Additionally, erosion of the river bank is occurring at the outfall structure of the existing pipe. The proposed improvements include reconstructing the detention pond, constructing approximately 1,260 feet of new 18" diameter outfall pipe from the detention pond to the Stillwater River, including a new outfall structure for the new and existing pipe outfalls, and installing two mechanical storm water separators within the collection system. The proposed 18" diameter pipe from the detention pond to the Stillwater River would provide the increased storm water capacity to eliminate flooding within the Willows Subdivision. The mechanical storm water separators will remove sediment, oil, and floatables from the storm water running off the streets in the Willows Subdivision. The improvements will be designed to meet the City of Kalispell standards and once the system is in operation and accepted by the City of Kalispell, the city will take over the operation and maintenance of the storm water system. Federal and State grant/loan programs will fund the project. Environmentally sensitive characteristics such as wetlands, floodplains, historical sites, and threatened or endangered species are not expected to be adversely impacted as a result of the proposed project. No significant long-term environmental impacts were identified. An environmental assessment (EA), which describes the project and analyzes the impacts in more detail, is available for public scrutiny on the DEQ web site (tt:/%n►ecl.t._ v /ea.mcrw) and at the following locations: Jerry Paddock, P.E. Department of Environmental Quality 1520 East Sixth Avenue P.O. Box 200901 Helena, MT 59620-09011 -jr)a-ddock@mt._ ov Keith Haskins, P.E. City of Kalispell 201 First Avenue East Kalispell, MT 59901 Comments on the EA may be submitted to the Department of Environmental Quality at the above address. After evaluating substantive comments received, the department will revise the environmental assessment or determine if an environmental impact statement is necessary. If no substantive comments are received during the comment period, or if substantive comments are received and evaluated and the environmental impacts are still determined to be non- significant, the agency will make a final decision. No administrative action will be taken on the project for at least 30 calendar days after release of the Finding of No Significant Impact. Sincerely, Todd Teegarden, Bureau Chief Technical and Financial Assistance Bureau "M 'ANA FLATHEAD C0TJ\.l'TY AFFIDAVIT OF PUBLICATION RICHELLE ROONEV BEING DI.Jl....,Y SWORX DEPOSES AND SAYS", THAT HE IS THE LEGAL OF Tl*"' DAILY INTER LAKE A DAI LY NEWSPAPER OF GE.NERAL CIRCLI". LATTOK, PRINTED AND PUl3.L,l,Sl-lE-D N THE CITY OF KA.•2:.:er ISPl*_-,-,lL, IN THE COUNTY'Or- FLAI�HEAD, STATE OF MONTANA A0N.'D '17HAT NO, .20910 LEGAL. ADVERTISMEN'T WAS PRINTED AND 't -'E OF .PL`*f3l,',JS'HED IN Tl_-­lE" t...,ARANDI N "'RYCOPY THEREO"t,"' SAID PAPER:, AND T\N' EACH AND EVI'll, ON THE DATES Of June 19,20.13, k P 4 J PRINTINQ DOES N(,,)T EXCEED THEMINIMUM C'10 IN G R AA .."I"E C H.ARGEl) "1"0, AN YOTHER ,j -ADVER111,3ER, FOR TFIE SAME PUl"BlACATION., SE"I"'I"N'THE. SA. -ME Sl E"I"YPE Pt"'I'll"51 1"R`k ; "l-ED FOR. THESAME NUMBER OF fNSERTION'S.. IL St�bsc.rlib.cd and, swcu-n to Before me hi Jun 19,201-'43. C ''ass Notary'Pubt' le -for the State ofN.4ontana lZe.siding.in- Kzilispell My canimlissit.)-11. Lt,XPICM-1.81. -9/ o' 4:y nF i $-'y A '00DL'ic 'foy state Expires ...,....ar..,..... «.... «...•---».,...«...n..,::m:..».:.:•a:.w.•..w.,.,,....:.......:.u..-.:....,s No. 20910 June 13, 201'. FINAL_ -F-INDING OF I NtFI ANT IMPACT 4i. TO ALL. 1N ERE TEd %4" GOVERNMENTAL AGENCI AND PUBLIC GROUPS' As required by state and fade t ` _` } rules for deteimining vt hethpr hvironmentat i tpaa werxr�r is n e C,. an environm.., reulevv .has been performed the propoied aeon below: e Willows Subdivision Stormwaterfl prov ements .fit tkfionCity of Kalispell loct �ber y. 307191 Total Case s5.2a36Q ; The Cityof Kalispell, thrcu h May 01 tellin nglOs Bring, Reporf (PER,If . Fraparod y Morrison - Maiede� ,zi nc, hr l6ertifled the n irnprove the storm. water utfij( glpej the outf l strU tUre to the,£ c i water Over and c ll ti . ` , and detention: systems fear th Willows Subdivision, which. ga located tn. southeast Kalispell .P)ooding is: occurring vithin th Willows Subdi4lon due to t underslZed oU l pipe Irc►r t detention., pond to thetIllwImprovamentsto,ate andth de##en06n and are n r'y t stabillz6 the step tanks, whist are .,sloughing Jn►to the :fond an causing sedimiant on an&,,,., b e of the outlet pi ha leer tiers the sediment should be r+ trr ned in th4 detention pond is discharging theIlwter lhrer, Storm orate ltowin raui l the jdate Oo) pond -and pe to i1letp Stillwater RIver on inat+es fr]grtt.. the Willows uN slon ands off -Site sources,, A hydrqulli�, analysis ind►lctes 'that the ciralti� pj cannot pass the 1 ye thar{ st+arm even 'wout ..ausing oc in in the wilowil'_'_, . ubdiv slon sere , additional ' w erosion of the river b k oc ora%at,the vutfall :struoturl` of `theOn pipe. Abe proposed 'improvements,. i . u reconstructing ho, -detention con ins�d, lat+e�nd, 1 � 8P of, new 1r fmeter of all pipe from° the, detention ponce to the li�►ater River, including a. new outtall .Wucture for #ha now and exls ing pipe outfi lls= and insWIN two mechanical sttbrm� waif ion p tm within: theCol system. 'The pro posed 18" dl met+�t` pipe -from th&, dotenflr�n - d to the Stillwater - River vw+ould. provide the increased storm water capacity to ellm�inete floodln.g Wlthln� the Wllows ubdivie`han° "`i"'hhe mechgni l stormy water separator. will remove sediment, ,oili and flo e8 from' the stormy water runnir g. tiff the streets In the Willows Subdivislonc he improvements will t* . designer. to: .-M edt the C4 :l Kalispell, standards and one the system is yin operation and accepted b It the City of . Kalispell. they alty wa i take over the operation' and maintenance of the storm water system, Federal an State gr�antlloan rt� . r�$�),y/��wiy}}}1.11tj d{fun . the �+yrgj6ct4::, +yue`} sesitive." charade=nstics YYYsuch as wetlands,,., floodplaine, histurldal edes, and. hreat+ened or endangered i =ids are not exp led o be,.,, adversely °lmpacled as a result of the proposed projt.,• too significant long -ter rrt environmental impacts were ° identified..: An enAr nmertal assessment (EA) wxhidh descdbe6 thd� proj t and Analyzes the impacts In , more detail is available fors pubic scrutiny on the DEQ, web site in ,#www.deq-rnt.gov/eamcpx)1 aM7at the ollowin � locations-, Jewry Paddock. P, .: epectrrrient of finvironmental� Qualkl! I 1520 -Fist Sixth Avenue Helena .l T. 59820-090 1 :peddcook@rt..gov Keith l'"iasklns,, .,E�., it Kali s ell 201 First. Avenue Eaat Kalispell,:. MT 59 1 � ¢ =ornment6 on the EX may be ;F subrmttted 10,lft 06partment oC Erwitonmental Ouaiity- at the;fi ague. addressd After eveluating substantive comments r ived, the depart merit Will revise the environmental atsess"ht 0� determine if an onvirnnmentalZ impact ernent is necessary, itI no substantive Comments a 4 received durlrtgt the commetitA perk � dr if substantiv { mments are rw,elved erg evaluated and the environmental 'Impacts q e}� $011 y determined be, be, :( o -siol ifica lta -t till agency, p will make a find decision., N& , edministrat a action will taken otl the prof e for at 1. 30calondar days .after release the Finding of No Significa Impact, inceroltf .1W Tod p 1 ardent a dd ` ee> _'ede Bureau thief ` ecbr i C $ 4nd Rinaticial Assistance Bureau June s" 20' :3.