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Home My WebLink About11-10-14-WSAGENDA ITEMS TCAAP Infrastructure Team Update -Storm Drainage And Wetlands Issues TCAAP Infrastructure Team MEMO.PDF, ATTACHMENT A.PDF, ATTACHMENT B.PDF, ATTACHMENT C.PDF, ATTACHMENT D.PDF, ATTACHMENT E.PDF Recycling RFP Discussion Ryan Streff, City Planner CC MEMO.PDF, ATTACHMENT A.PDF COUNCIL/STAFF COMMENTS ADJOURN If more time is needed, the special work session may reconvene after the regular City Council meeting. Mayor: David Grant Councilmembers: Brenda Holden Fran Holmes Dave McClung Ed Werner Special City Council Work Session Agenda November 10, 2014 5:30 p.m. City Hall Address: 1245 W Highway 96 Arden Hills MN 55112 Phone: 651 -792 -7800 Website : www.cityofardenhills.org City Vision Arden Hills is a strong community that values its unique environmental setting, strong residential neighborhoods, vital business community, well -maintained infrastructure, fiscal soundness, and our long -standing tradition as a desirable City in which to live, work, and play. CALL TO ORDER 1. 1.A. Documents: 1.B. Documents: 2. Page 1 of 1 DATE: November 10, 2014 TO: Honorable Mayor and City Councilmembers Patrick Klaers, City Administrator FROM: Terry Maurer, Public Works Director SUBJECT: TCAAP Infrastructure Team Update Storm Drainage and Wetland Issues At Monday’s work session the Infrastructure Team (Jon Horn, Project Manager; Beth Kunkel, Task Leader; and Pam Massaro, Storm Water Engineer) will be in attendance to give the second update on the storm water and wetland issues. The first update on these issues was back on July 14th. Attached is a memo from Kimley Horn outlining the issues to be discussed with the Council along with three exhibits. Also attached are the minutes from the July 14th Work Session. Attachments Attachment A: Kimley Horn Memo Attachment B: Exhibit A Attachment C: Exhibit B Attachment D: Exhibit C Attachment E: July 14 Work Session Minutes AGENDA ITEM – 1A MEMORANDUM Memorandum Date: November 10, 2014 To: Terry Maurer, Public Works Director From: Beth Kunkel, Kimley‐Horn Pamela Massaro, Wenck Subject: TCAAP Natural Resource (Green) Corridor Design Update The purpose of this memo is to provide Council with an update on the progress made on the design of the stormwater/wetland management plans for the TCAAP site since the July 2014 work session. Regulatory Requirements There are a number of federal, state and local water resource regulations that need to be met on the TCAAP site. Given the complexity and potential conflicts between these regulations, we have been meeting with the respective agencies to confirm requirements. The four key agencies and their respective approvals required are listed below:  MnDOT has jurisdiction over wetland and drainage within MnDOT right‐of‐way, including the interchange areas of CR H and CR I. Wetland and drainage permits will be required from MnDOT for modifications to these interchanges that impact wetlands and surface water runoff.  MN DNR has jurisdiction over Rice Creek (within the top of banks of the Rice Creek channel) including any changes to the creek alignment, new crossings and floodplain impacts. A public waters permit and floodplain review will be required for the creek realignment, crossing and floodplain impacts adjacent to Rice Creek.  U.S. Army Corps of Engineers has jurisdiction over waters of the US which includes certain wetlands and streams. A Clean Water Act Section 404 permit will be required for wetland and creek impacts.  Rice Creek Watershed District has jurisdiction over TCAAP site storm water runoff, erosion control, floodplains, wetlands, and creek crossings. RCWD approval is required in each of these areas via a comprehensive permit. Design Parameters Given the overlap and complexity of these various requirements, design priorities were established to meet as many of these requirements within the natural resource corridor as possible, with the following priorities in this order: 1. Accommodate all wetland replacement for infrastructure impacts (Spine/Thumb Roads and utilities, stormwater ponds, associated site grading, maintenance access, CR I/Thumb Road access) 2. Accommodate all required stormwater rate control and infiltration for Spine/Thumb Roads 3. Accommodate stormwater rate control for TCAAP site development 4. Provide maintenance access to stormwater features in form of a recreational, multi‐use trail 5. Provide wetland mitigation for site development to the extent feasible 6. Provide infiltration for site development (residential, retail, and commercial parcels) to the extent feasible 7. Accommodate other passive recreation opportunities where feasible Existing Conditions As shown on the attached Exhibit A, the existing site drainage is split with roughly 60 percent of the site draining to Rice Creek and the southern 40 percent of the site draining to Round Lake. The RCWD requires that the existing volumes to these waters be maintained in the future condition, and the peak discharge rate be reduced as the site is developed. There are 14.4 acres of wetland on the site (Exhibit B). The RCWD and Army Corps have different jurisdiction and mitigation requirements for the wetlands impacted. A minimum of 6.5 acres of mitigation is needed on site to satisfy RCWD and Corps requirements for the site infrastructure (construction of the Spine and Thumb roads, CR I roundabout, natural resource corridor grading) as shown in Exhibit C. This amount does not include the creek realignment, however that work is expected to be self‐mitigating. Grading Concept Plan The current infrastructure plan shows the conceptual layout of the natural resource corridor (Exhibit C). We are continuing to coordinate with the regulatory agencies on the design details and there are revisions that may occur as planning and permitting proceed. This grading work will be completed as a part of the TCAAP public infrastructure improvements. The proposed grading plan accomplishes the following priorities: 1. Provide all wetland replacement for the public infrastructure impacts 2. Accommodate all required stormwater rate control and infiltration for Spine/Thumb Roads 3. Accommodate stormwater rate control for all TCAAP site development 4. Provide maintenance access to stormwater features in form of a recreational, multi‐use trail 7. Provide some space for passive recreation opportunities along the easterly portion of the site Depending on further coordination with the Army Corps and RCWD, there is room in the natural resource corridor to meet either priority 5 or priority 6, however which is implemented has not been determined. If a permit from the Corps cannot be obtained for wetland impacts of future development, the proposed grading plan would not provide wetland replacement (priority #5) for future site development within the natural resource corridor, requiring individual developments that impact wetlands to address mitigation needs separately as a part of their planning and design activities. In that case, infiltration BMPs would be incorporated into the natural resource corridor (priority #6) rather than additional wetland mitigation. What will it look like? The design details are still in the planning stage, however we have a number of images to be presented at the work session that depict the general look of the different features that may be included within the natural resource corridor. ! ! ! ! ! ! £¤10 ® ® ® ® §¨¦35W §¨¦35W 96 H I TO ROUND LAKE TO RICE CREEK TO RICE CREEK TO RICE CREEK OUTFALL #1 OUTFALL #2 OUTFALL #3 OUTFALL #4 OUTFALL #5 OUTFALL #6 ¯0 700350 Feet TCAAP InfrastructureExhibit A. Existing Drainage Legend !outfall_location Existing Drainage Break Proposed Land Use Areas £¤10 §¨¦35W H I ¯0 700350 Feet TCAAP InfrastructureExhibit B. Delineated Wetland Boundaries Legend Delineated Wetland Boundaries Project Study Area EXHIBIT C INFRASTRUCTURE PLAN (651) 266-7100 (FAX) (651) 266-7110 Arden Hills, MN 55112 1425 Paul Kirkwold Drive ENGINEERING/OPERATIONS Department of Public Works RAMSEY COUNTY ARDEN HILLSSPECIAL CITYCOUNCIL WORKSESSION – JULY14, 2014 3 FireChief Boehlke indicatedthattheFireDepartment owned theland. Hecommented that ifthe decisionwas made toclosethestation, thedepartmentwoulddiscuss alternative planswiththe Cityregarding service coverage. Hebelievedthattheproperty couldbesoldwiththebuildings andanyproceedsofthesalewouldgointotheFireDepartment’sGeneralFund. Councilmember Holmes askediftheFireDepartmentplanned tocloseFireStationNo. 1inthe nearfuture. FireChief Boehlke statedthatitwasnottheplanatthistimetoclose Station No. 1, butitmaybe apossibilityafterthefull-time dutycrewisimplemented. Hedidnotbelieveit wouldbenecessary forthedepartment tostaff fourstationsinthefuture. MayorGrantthankedFire ChiefBoehlke forattending themeeting thisevening. A.TCAAPInfrastructure PublicWorksDirectorMaurer explainedthatJonHornandBethKunkelofKimley-Horn and PamMassaro ofWenck werepresenttodiscusstheInfrastructure Study withtheCouncil. Mayor Grant discussedthestormwater treatment areathat wouldbenecessaryontheTCAAP site. He requested thatthisareanotbedeemedas arecreational facility, butrather arequired watertreatmentarea. He explainedthat theCouncil wanted toseethisspaceturned intoan amenity onthesite. PublicWorks Director Maurer reported thatthestormwater treatment component isafunction ofthe landandiftheCity wantsto dressthisareaup, putin atrail orbenches, the expensesfor these amenities wouldhavetobeassumedbytheCity. BethEngum Ramsey County, clarified thattheregionaltreatment of stormwater onthesite would benefitboththeCityand theCounty. Sheexplained thattheregional approach hassome development andmaintenance advantages as comparedtonumerous smallerstormwater holding ponds. JonHorn Kimley-Horn, reviewedthedrainagesystem indetail withtheCouncilalongwithhow theTCAAP sitewasbeingevaluated. BethKunkel Kimley-Horn, discussed thelocationof thestormwater feature andtheareabeing usedfor thewetlandmitigationarea. Shecommented thatthekeywouldbefortheCitytostrikea balance between thestormwater requirements fromRiceCreek WatershedDistrictandtheDNR. Inaddition, thecurrentwetlandsandimpervious surfaces wouldhave to bereviewed. Through all ofthisanalysis, thegoalsof theCounty would have tobetakenintoconsideration. Sheexplained that thisprocess wouldassiststaff increatingthefinal designfortheTCAAP sitewiththe understanding thatallwater resourceswerebeingaddressed. Councilmember Holden asked if thestormwater andgroundwater wastheCity’s responsibility. Shethenreferred toconversations heldattherecentJDAmeetingregarding stormwater. ARDEN HILLSSPECIAL CITYCOUNCIL WORKSESSION – JULY14, 2014 4 PublicWorksDirectorMaurer indicated thathewas theCity’srepresentativefortheTCAAP infrastructurestudyandcommented thattheCitywaspayingforaportionofthestudy (sanitary sewer, water andstormdrainage). Hereported thattheArmywasresponsibleforgroundwater andthe Countywas responsible forwetlands. He indicatedthattheCitywould beinvolved inthe designofthestormwater system andwouldhavemaintenance responsibilities after thesystem was constructed. Mr. Horn reported thathisgoal wastodesign astormwater systemthatmeetstheneeds ofthe development area. Once therequirements areunderstood andthedesigniscreated, thenext step wouldbetocreate afeasibility report. Thenthe expenseandcostsharing fortheprojectwould need tobefurtherevaluated. Mayor Grant asked ifthesizeofthestormwaterfacility wasdriven bytheamountof impervious surfacethatwouldbecreated bydevelopment. Mr. Horn statedthatexisting andproposed conditions impacted thesizeofastormwater facility along withwhatwasnecessary tobridgethegap. Councilmember Holden discussedthestormwaterditchthatrunsadjacentto thespineroad. She askediftherewasacostdifferencebetweenafull-lengthditchversusponds. Mr. Horn explained thatpondswouldrequire excavation andtheditches wouldrequire pipes. Further discussion ensued regarding ditches versuspondsalong thespineroad. Ms. Engum commented thattheCouncilwouldneedtoconsider ifthepondswouldhavewater standinginthematalltimes, andifthiswater needed tobecirculatedor treatedtomaintain a properlevelofwater quality. CouncilmemberMcClung askedifthemajorityofthestormwater fromtheTCAAP sitewould drainthrough thegreen spinetoRiceCreek. Ms. Kunkel discussed howwatercurrentlyflowedthroughthesite notingthemajority would flow toRiceCreek. MayorGrant recommended thattheCouncildiscuss whatthey wouldliketoseeontheTCAAP site. Henotedthatbasedoncommentsexpressed todate, theCouncil wants water intheponds at alltimes andthat thepondsbe freeof algaeor stagnant water. Hefeltthatthestormwater treatment pondswouldbeconsideredanamenity. Councilmember McClung statedthathisidealvision wassimilarto thatofCentennialLakes. He understood thattheCitymaynot beabletocreate something tothesameextent, but hoped to havethree orfour larger bodiesofwater thatwere connected through ameanderingbrookthat flowedintotheRiceCreek system. Thiswouldturnthestormwater treatmentsystem intoan amenityrather thana system ofditches. Hewanted thisdevelopmentto bedifferentiatedfrom othersites. ARDEN HILLSSPECIAL CITYCOUNCIL WORKSESSION – JULY14, 2014 5 MayorGrant wanted toseesomedegree ofmanicureinsomeplaces, aswasseeninCentralPark inRoseville. Hebelieved thatthiswouldenhance thevalue oftheproperty, whichwasinthejoint interest ofboththeCountyandtheCity. Public WorksDirector Maurer discussed thedifferent edgesavailable forstormwater ponds. Councilmember Holmes anticipated thattheCitywashopingthattheCountywould contribute to thestormwater ponding andmanicured edges asthis would greatlyenhancethesite andproperty values. Sheexpressedfrustrationwith thelackofcommunicationbetween the CityandCounty regarding thismatter. MayorGrant agreed withthiscommentstatingthatageneral concept forthe stormwater ponds wouldgreatlyassist Kimley-Hornindesigning thesite. Ms. Engum believed thatsheand PublicWorksDirector Maurerwereonthesamepage. She understood thattheCountyhadresponsibilities asthelandowner. Public WorksDirectorMaurer discussed thebenefitsofaddressingthestormwatermanagement fromaregional perspective. Henoted thattheregionalmanagement wouldenhancethevalueof thepropertyandwouldreducethe numberof pondsonthe site andwouldtherefore reduce the long-termmaintenanceexpenses. Councilmember Holmes askedwhowouldbefinanciallyresponsible forthewatertreatment, trails, benchesandedgesofthestormwater ponds. PublicWorksDirector Maurer understoodthatthiswould beajointresponsibility. Heindicated thatfurtherdiscussions wouldhavetobeheldbetweentheCityandtheCounty. CouncilmemberHolden clarifiedthattheregional ponds would neverbeownedbytheprivate landowners, butratherwouldbemaintained bytheCitygoing forward. Public WorksDirectorMaurer stated thatthiswasthecaseandthatthepondswouldbecome a partofthepublicinfrastructure. Mr. Horn indicatedthathis goalthroughtheinfrastructurestudy wastocreatespace to accommodatethestormwater fromthe entiresitein thegreenspinearea. Optionswouldbe evaluated, along withthecost andthisinformationwould bepresentedtothe Council inOctober. Itwashishope thattheareas wouldbenefitandenhance thesiteforboththeCityandtheCounty. Mayor Grant discussedthepercentageof landthat wassetaside fortreatingthestormwater in additiontothecurrent wetlands. He questioned ifKimley-Hornneeded tohaveabetter understanding ofthe proposed densityforthesitebeforetheinfrastructure studycouldbe completed. Mr. Horn describedthe processhewould usewhen evaluating theinfrastructure forthegreen spinebased on theapprovedMaster Plan. Heappreciated thevision anddirection provided bythe Council thisevening. AGENDA ITEM – 1B City of Arden Hills City Council Work Session Meeting for November 10, 2014 P:\Planning\Recycling & Garbage\2014\RFP_Recycling Services\CC WS Packet_(11-10-14) Page 1 of 1 MEMORANDUM DATE: November 10, 2014 TO: Honorable Mayor and City Councilmembers Patrick Klaers, City Administrator FROM: Ryan Streff, City Planner SUBJECT: Recycling RFP Discussion Requested Action Review and provide feedback regarding the RFP for Comprehensive Recycling Services. Background On October 30, 2014, the City received a letter from the Dorsey & Whitney Law Firm representing Garbage Haulers for Citizen Choice (GHCC). The letter received from Dorsey & Whitney is in regard to the recent RFP for Comprehensive Recycling Services. City Attorney Joel Jamnik will be attending the meeting to review this item and answer any questions the Council may have. Attachments A. Letter from Dorsey & Whitney