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5.4.C. SR 04-05-2010~i Elk REQUEST FOR ACTION River To Item Number Ci Council 5.4.C Agenda Section Meeting Date Prepared by Administration A ri15, 2010 ohn Anderson P.E. Item Description Reviewed by 19314 Avenue -Median Restoration Lori ohnson, Administrator Reviewed by Action Requested The City Council is asked to consider options for landscape restoration of the median areas on 19314 Avenue and provide staff with direction on selected landscape treatment. Additionally, it is requested that the City Council authorize staff to obtain quotes for the selected restoration. Background/Discussion The median areas along 19314 Avenue, from Xavier Street to Twin Lakes Road are ready for final restoration. The construction plans for 19314 Avenue left the final restoration out in order to allow the City Council to consider options. Suggested options are described in the attached memo and summarized on page 6. Options for the restoration include various treatments such as turf grass, native plantings, formal planting schemes, or combination of all or some of these. Staff recommends Option 2 be implemented on medians F, G, and H as shown on the attached exhibit 1. One consideration related to the decision on median treatment is the cost of ongoing maintenance. Staff believes option 2 presents a good balance of lower maintenance cost, attractive aesthetics, and green friendly components. Median E was turf grass prior to the extension of 19314 Avenue, has been disturbed during construction, and will require restoration. Restoration of the medians should take place in the spring of 2010 for the best chance of successful growth. Financial Impact The construction cost of restoration is dependant on the landscape option selected. An amount of $65,000 has been included in the budget fox 2010 for median restoration. We believe that $65,000 will cover the cost of Option 2 (Native plantings with perennial planting end caps). Attachments Exhibit 1 -Median Layout Exhibit Exhibit 2 -February 22, 2010 Anderson Memo Action Motion by Second by Vote Follow Up Exhibit 1 193rd Avenue Median Layout Existing Conditions Medlar Epsdng Condl6on Type Length (ft) Width (ft) ,N~ea (st] Area (Ac) requires restoration Irngatiai available A Perennial lantin s vnth monument stn Linear 95 15.3 1240 0.03 no no B Perennial lantin s E ebrow 2000 0.05 no no C Turt rass linear 300 14.6 5500 0.13 no no D Perennial lantin s E ebraw 2000 0.05 no no E no lands a in lace, farm turf rass Linear 345 14.6 3600 0.09 es no F G H no lands a in lace no landsca a in lace no landsca a in lace Linear Linear Linear 1550 200 1125 16.5 18.5 16.5 25600 2000 18600 0.59 0.05 0.43 es es es es es es Schematic Layout of Medians (West to East) ~ ~~°0 ~. A g D u i u Z r a n in S e r $ • t • r t B e t E I F ~ G ~ H X T P a Y r v ~ ~ 1 e ~ a e r t r • S 8 t t D ~ r r • e 1 • e v t t e T w 1 n L a k • s R d Memorandum Date: 2/22/10 To: Lori Johnson From: John Anderson RE: 193 Avenue Median Restoration BDM CONSULTING ENGNEERS AND SURVEYORS, PLC 60 Plato Boulevard East; Suite 140 St. Paul, MN 5~ 107 763-786-4570, Fax 763-786-4574 Overview 193`d Avenue was constructed in 2009 and some final restoration work will take place in 2010 to complete construction. At the time the 193`d Avenue Project was bid there was no consensus on how the median areas were to be landscaped. The plans for 193`d Avenue called for the median areas to be left without landscaping and after the City Council had determined a policy on median landscaping the city would contract separately for the landscape work to restore these areas. With the spring thaw nearing and the 2010 construction season approaching, the discussion on median treatments needs to resume determining how to proceed with restoration of the medians on 193`d Avenue. The City has acquired ownership for all medians along the 193`d Avenue corridor outlots A,B,C, and D of The Woods of Hillside Third Addition and Outlot A Woods at Hillside Second Addition. Plats of these outlots are included in the appendix. Background Currently the City has a number of different median treatments in place and overtime some have evolved to their current state from what their original concepts were. The following is a summary of a few median landscaping treatments and their history. Orono Parkway -This road was constructed in 1994 with a berm in the median covered with turf grass. Subsequently in 2002 the berm was removed and the turf grass was replaced with Native plantings. Most recently manicured perennial plantings end caps were added in 2008. A copy of the approved planting plan is included in the appendix. Twin Lakes Road -This road was constructed in 2001 with a flat irrigated turf grass median. In 2005 the irrigation was discontinued and in 2009 above ground irrigation piping was removed. In 2008 the City Council discussed median treatment options but did not come to a consensus on what if any modifications they would like to see put in place. Copies of formal planting schemes discussed are included in the appendix. 193rd Avenue -The median on this roadway begins on the east side of the intersection of 193`d Avenue and Zane Street. This first median contains a monument sign and includes plantings surrounded by mulch. This treatment is carried through on the islands and the eyebrow cul-de-sacs. The rest of the medians along the center of l 93`d are turf without irrigation. BDM Project No. 226069 2/22/2010 Waco Street -Waco Street has a limited amount of median that is hard surface with concrete. This is typical of streets that have medians to channelize traffic flow at intersections. Other such streets with this type of medians include, Evans Street, 193`d Avenue at Evans, School Street at TH 169 and Main Street at both TH 10 and TH 169. The following figures show examples of the median landscaping mentioned above. SOU TN N ORTF'. k. C. W. ~ R.U. W. 50' vU' 0 6' 25' 72' 1"' ~~ ~~... 25' _._ I~ SODDED MEDIAN (GLACE CDNCRE-E PAVING WiERE ' LESS THAN 4' WIDE) ~ D618 CONC. ~\° 8618 CO NC. ~ E~ '~+~ 5' CURB & GUTTER 'I k . - CURB & GUTTER 1 ' \ ~ TIPPED DUT . x_.009 - --~-- --- I z_aoy ~ ~ I , f ~- - ~CDDED BDULEVARU mo AYR.) 9" CDNC. S:f)FWAIK ~1.5" )_j 31 TYPF 41A RITIIMINDUS WEAR C(111RRF. i TACK ^.'JAT ' 2" 2331 tYa_ 31H 61'UMINnUS BASE CG'J FEE 233' TYPE A4IA BITUMINOUS --2 SIDEWALK ON CLASS 5 BASE ~ - 5" CLASS ~ AGGR=GATE BASE TYPICAL STREET SECTIO N ORONO PARKWAY STA. 47+98 TO 61+00 Figure 1 Orono Parkway-0riginal bermed section ,~. Figure 2 Orono Parkway -Seeded with Native Plantings (2003) 2 2/22/2010 ~~~~ ~ - __ ___ r ~.~' ~ ~ ~fi ~~~ .n - ,~ ,~ _ _ _ ~. 7 ~~~ x ,p ~fk ~w ;. 4g` ~ ~i ~ ~r 1~ ~ ~,. ~~, 3~ 1' ~~'~ # Y ~ ~ ~ < s.~ . ~r; "µ d~F ~~~, ~ ~~ ~ ~ ~fi~~~ ~ h j9- ~~« Ate. r ~~°„'-"~J:: W ("i P. ~e~~ n~A z ira% ~~~~ '~ JEq a4 „y~e~5 y .F s { ~ ~~ i Figure 3 Orono Parkway -Native Plantings (2009) 4 ~~ n ~~4~~' ~-~, .,,c, y ' oi µ~ . ~ , ~ ~` 6 ~~ . ~ i " ~~b ~,. ...,,:. _ ,. z-. ~, r r.... ._. N. - ... : ~ .. ~.. .. . q ~~ r M. :,~ R ~ ;n S ~ yx ~ ~ ~ ~~~ ~~ ,~; ~.. w^ x'.~ .y~ _ ~f 'A .. ~ w' ..~ etc ~§-.t~" ~ ~ ~ ~~ ~ '~~ '~`~ ••- , rt 3' +ty ~ _~~~p~~ Figure 4 Orono Parkway -End Cap Treatments (2009) 3 2/22/2010 .~~- ~ Figure 5 Twin Lakes Road -Irrigated Turf Grass (2003) 1 r..~ d. 9,~ 1,~ .. ,~WA.. .~ - ,. 1 Yri, . a L'~ t~;,,, - ~n,.. S~ X ,.. t ,'- .. '~'~ 'S7~ ' _ ~. ~___~ ' w ~6~ ~~ .?, •~ ?a ~ ~ <,., m, t ~ ~» '" y ~~~4 a ' ' ~ '~ ,~. ~,_ . . -. ~~, 9 ~ ¢i~'~ *C f ~ ~ K ;. ~ ~,'~ ~ t s~ ~`~„. _ ~ Figure 6 193rd Avenue -Monument Sign and Plantings (2003) 4 2/22/2010 Figure 7193rd Avenue -Turf Grass (2003) Figure 8 Waco Street -Hard surface, Concrete (2003) 2/22/2010 Options for Median Landscaping There are a wide variety of landscape treatments that can be applied to medians. A number of factors go in to the decision of developing a policy related to median landscaping such as developing a neighborhood identity, impact on the environment, initial cost, maintenance cost, and compatibility with traffic. Not all medians exist in the same settings, some are in generally residential neighborhoods, some in commercial or retail and others in more heavily traveled highway commercial areas. Therefore it may be necessary to establish standards that apply to each type of setting. The following summarizes a few of the options that have been established in the past or contemplated for implementation: Option 1 -Native Plantings This option could include plantings much like are in place along Orono Parkway. Option 2 -Native Plantings with Perennial Planting End Caps This option would include both the native plantings as are inplace along Orono Parkway and perennial plantings that have been added at the ends ofthe medians. Option 3 -Turf grass This option would include typical grass seed mixture to establish turf. Option 4 -Formal Planting Scheme This option would be similar to those proposed for Twin Lakes Road including varied planting of shrubs, flowers and trees. Examples of these types of planting plans are shown in the appendix. Option 5 -Hard Surface This could include a number of materials for hard surface such as concrete, colored concrete or concrete pavers. Schedule As was mentioned above the medians in the new construction of 193rd Avenue have been left with no permanent landscaping to allow for discussion of the topic and a determination of a median policy. The medians were temporarily stabilized with hydro mulch last fall. As part of the NPDES permit issued by the Minnesota Pollution Control Agency the City is required to restore vegetative cover to the soil as the owner of the project. It is anticipated that work should be scheduled to begin in late April or early May of 2010. If native plantings are to be included, the site needs to be prepared and ready for planting by May 15. Native plantings need to be planted within a narrow window to increase the chances for success. This window is from May 15th to June ls`. Modifications to the existing medians along 193rd between Auburn Street and Xavier Street may be incorporated if a specific theme is intended to be maintained throughout the corridor. This work is expected to take place with traffic on 193rd Avenue. The following is a tentative schedule for the work: March -City Council determine Landscape policy April -Prepare request and collect quotes for work, Authorize contract May thru June -Complete landscaping work I to 3 year warranty period depending on landscaping option 6 2/22/2010 Cost Completion of the medians has been budgeted for in the 2010 Capital Improvement Plan. The budgeted amount for this work is $65,000. This would cover the construction cost of 1.3 acres medians from Auburn Street to Twin Lakes Road. This estimate is based on placing topsoil for native plants, preparing seedbed in the existing medians, planting and maintaining native plants. Depending on the scale and complexity of the selected landscape option the cost may go up or down accordingly. Implementation Construction of the final landscaping will follow some basic steps regardless of the specific landscape option selected. Details on topsoil, plant materials and irrigation are dependant on specifics of the option selected. Irrigation stubs have been installed on the newly constructed medians between Xavier Street and Twin Lakes Road in the event that the landscape option selected requires irrigation. A native planting plan could benefit from a basic temporary irrigation system put in place to help establish new native plantings. The basic steps that need to be accomplished are as follows: 1. Place topsoil in new medians, augment, treat or replace topsoil in existing medians 2. Install temporary or permanent irrigation system 3. Plant seed and plantings 4. Provide temporary cover to allow plantings to establish 5. Maintain plantings through out warranty period 2/22/2010 APPENDIX A. Approved plan for Orono Parkway B. Orono Parkway study 7-24-07 C. Twin Lakes Road concept A D. Twin Lakes Road concept B E. Twin Lakes Road Concept C 2/22/2010 S 1d3~NC~~ N`dI~~W J~b'M~I~I'dd ~NOba s ~. 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