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HomeMy WebLinkAbout2008-07-03 NAC Planning ReportRE: TO: FROM: DATE: BACKGROUND Attached for reference: Exhibit 1: Exhibit 2: Exhibit 3: Exhibit 4: Exhibit 5: Exhibit 6: Exhibit 7: ENCLOSURE 3 NORTHWEST ASSOCIATED CONSULTANTS, INC. 4800 Olson Memorial Highway, Suite 202, Golden Valley, MN 55422 Telephone: 763.231.2555 Facsimile: 763.231.2561 planners@nacplanning.com PLANNING REPORT Eric Johnson Scott Richards July 3, 2008 FILE NO: 798. 02 — 08.06 Oak Park Heights — Revisions to MPCA Permit and Amended Conditional Use Permit for Expansion of the A.S. King Ash Disposal Facility Manuel Castillo, representing Xcel Energy, has made application for an amended conditional use permit to allow modification of the existing conditional use permit approvals for the A.S. King Plant Ash Disposal Facility. The ash disposal facility expansion has been submitted to the Minnesota Pollution Control Agency (MPCA) for review. Xcel Energy had plans to close the site in Oak Park Heights by the year 2010. A new law has placed a moratorium on permitting new landfills until the MPCA conducts rule making to address landfill siting. The proposed expansion of the A.S. King Plant Ash Disposal Facility will provide additional time for Xcel Energy to evaluate options for ongoing ash disposal while the MPCA rule making process is conducted. The City Council approved a conditional use permit in October 1996 to expand the ash disposal facility. That expansion also included vacating significant roadway right-of-way in areas that had been platted but never developed. The plan, approved in 1996, was followed although Xcel Energy proposed minor modifications as part of the final phase of construction in 2006. That amended conditional use was approved by the City Council in April 2006. The property is zoned 1, Industrial which accommodates the use as permitted. Existing Conditions Currently Permitted Final Cover Proposed Final Cover Final Cover Soils and Plantings Perspective Amended Conditional Use Permit April 25, 2006 Visual Impact Analysis (16 pages) Comments from the City Arborist PROPOSED PROJECT The applicant has provided the following narrative to describe the proposed changes: The expansion includes a 7.9 acre ash footprint located entirely within the 46 acre permitted landfill area. The expansion will be developed with a combination of 3H: 1 V and 3% to 5% slopes to a peak elevation of 877.4 feet MSL. The expansion will provide 219,400 cubic yards of total new airspace, including new liner subgrade, perimeter berms, ash, final cover, and surface grading west of the expansion to improve drainage. The finished grading plan is shown in Figure 1. The final cover grades were previously permitted to a peak elevation of 847.5 feet MSL. This height limitation was imposed to prevent overloading an existing sanitary sewer located beneath the site. The expansion fill plan is designed to maintain this same height limitation over the sewer. All but 1.6 acres of the expansion ash footprint is located over existing lined areas of the King Ash Disposal Facility. A new liner (Phase VII liner) will be constructed for the 1.6 acre unlined area. Portions of the expansion area have already received final cover; in which case the cover will either be stripped or in one area abandoned in place prior to placing more ash. New final cover will be placed over the entire expansion area and will be connected to the existing final cover. The expansion will be developed with a single liner /perimeter berm construction event in Summer 2009, which will prepare the site for the complete expansion. The development of the new berms will necessitate the relocation of the walking trail on the north side; trail relocation will be done prior to berm construction to minimize impacts. It is anticipated that final cover will also be constructed in 2009 to the limits shown on the Final Cover Phasing Plan in Figure 2. It is anticipated that the south portion of the expansion area (south of the existing sanitary sewer) will be filled first and be ready to receive final cover in 2010. The north portion of the expansion area is anticipated to be filled by February 2011 and thus would be ready to receive final cover in Summer 2011. This sequence of development and closure is reflected in the Closure Phasing Plan in Figure 2. ISSUES ANALYSIS Comprehensive Plan. The Land Use Plan designates this area as park facilities /open space. When the ash disposal site is filled and capped, it is anticipated the area will be used for passive and active recreational areas. Zoning. As noted, the area is zoned 1, Industrial. The ash disposal site is a permitted use and the conditional use permit granted in 1996 adopted the final cell development plan. Any changes to that plan, as now being proposed, require an amended conditional use permit. 2 Visual Impacts. Xcel Energy was requested to complete a visual impact analysis for the proposed final cover. Photographs were taken from three vantage points, one on Highway 36 with a view to the southeast; another from Beach Road with a view to the south; and another from Cover Manor with a view to the northeast. The views show current conditions, views as approved and views as proposed under the new application. The existing and approved views show no or little impact to views of the St. Croix Valley, of the tree line of Valley View Park, or of the Washington County Government Center. The proposed expansion would adversely impact these views. With the initial application, Xcel did not propose any landscaping adjacent to or on the expansion area. Staff requested that Xcel study ways to reduce the visual impacts. Two additional views were created (Figure 4D and 5D) that added tree plantings in areas forward of the expansion or on soils not impacted by the landfill liner. Xcel representatives have indicated that their ability to spread the ash was complicated by the existing utilities on site. Additionally, both Xcel and the City are interested in providing an area in the northeast corner of the site for park and recreational purposes. Landscaping. Xcel has provided the two conceptual views with landscaping which does mitigate some of the visual impact of the expansion. Xcel cannot guarantee that the MPCA will allow any type of plantings on the capped areas of the landfill. Additionally, note that the views indicate trees that appear to be approximately 20 years old. The City Arborist has reviewed the two views and would require a full landscape plan. Her memo is attached as Exhibit 7. Additionally, the City should receive configuration from MPCA that the landscaping as proposed by Xcel can be completed. Utilities. There are a number of sanitary and stormwater sewer lines that pass through the ash disposal facility. Of note is a 24 inch sanitary sewer line that passes directly under the expansion area. The proposed final cover plan indicates that the expansion area is separated into two areas on either side of this sanitary line. The City Engineer has expressed concerns with placement of additional fill over and directly on either side of this sanitary sewer line. There is concern with long term maintenance and access issues for this and the other lines that are adjacent to the expansion area. The City Engineer will issue a separate report outlining the utility issues. Trails /Park. The existing trail that passes through the capped portions of the site would need to be moved to the north of the expansion area. The final cover plan (Exhibit 3) indicates the location of the moved trail. The City has worked with Xcel on the long term plans for development of park facilities once the site is capped. The initial plan indicates that the playfields and possibly pavilion would be constructed in the northwest corner of the site. As a condition of approval for this conditional use permit, timelines will be placed on Xcel for park development and construction of the facilities. CONCLUSION 1 RECOMMENDATION Based upon the preceding review, City staff recommends the Planning Commission hold on any recommendation at their July 10, 2008 meeting. Staff is concerned with the 3 visual impacts of the expansion area as now planned, there is no final landscape plan, and it is uncertain whether MPCA would allow the landscaping as proposed in the concept diagrams. Additionally, there are significant concerns of the City Engineer with the placement of fill on and near the existing utility lines. Delaying the project an additional month will allow staff to work with representatives of Xcel Energy on these issues. City staff further recommends that Xcel Energy hold a community meeting for affected neighboring residents as to their plan prior to City Council consideration of their request. 4 gq h I g 1 hid 4 giliN 5 7: 64 u emznagotstip ra.VB.rAdxiioouddv iwd ZOtONSV5WP.Pad 10.1.1.0.P101.0 IVO-V4 MU Pld mot ' 803U8/9 fg 2 .4- Lk 7. 111 a LoP pusolPf0a econdfiv t4 Z(Il03ISVOb"11tWOurEd ` W.1 ILIA.P.14A . . r d :mot u 14..31,1.►a roe Jia wkic 01E 4.110:d L. 2 2 111111i1 I I g., B '0,4, I 11 1 P. 1 H ij 111 2 2 E .1 0 P.O.P 901MODuld AWN ZOLOCIMS01.04d W.PCI ilikpaRSALIsacel WV/ :9ML ued PiciWWWWMP.P.1S Nrikl 3 DAPO lid 90071619 :mold EXHIBIT 4 6" VEGETATIVE GROWTH LAYER (TOPSOIL AND TURF) A.S. King Generating Plant Oak Park Heights, Minnesota 5300 Highway 12 Maple Plain, MN 55359 tel 952-346-3900 fax 952-346-3901 www.mccainassociates.corn Final Cover Soils and Plantings (cut-away perspective) 2008 Vertical Expansion A.S. King Ash Disposal Facility NWAC File No. 798-02 & 798.04-05.05 Amended Permit Issued : April 25, 2006 Legal Description: Owner: Xcel Energy Address: 414 Nicol let Mali Minneapolis, Minnesota CITY OF OAK PARK HEIGHTS AMENDED CONDITIONAL USE FOR LAND RECLAMATION FOR XCEI, ENERGY Site Address: 1103 King Plant Road Oak Park Heights, MN 55082 See "Exhibit A" Legal description attached hereto Present Zoning District: I-Industrial Permitted uses set forth in Ordinance 401 Section 401.12; CUP requirements: Code Section 308.08 1. AMENDED CONDITIONAL USE PERMIT FOR: IL The applicant has submitted a site drawing and supporting documentation to the Community Development Department attached as part of the April 6,2006 planning report, see Exhibit B. EXHIBIT 5 The ash disposal site is a permitted use and the conditional use permit granted in 1996 adopted the final cell development plan that included mining and land reclamation. Changes to the conditional use permit granted in 1996 require an ainended conditional use permit. Xcel has requested a change to the conditional use permit to allow a new plan for grading on the east edge of the site and the post closure access roadway that will connect to the existing cul-de-sac at 58 Street. HI. All uses shall be subject to the following conditions and/or restrictions imposed by the City Council of the City of Oak Park Heights. 1. All ash hauling to the site shall continue to be from the Beech Road access. No access for fill operations shall be from the 58 Street access. Access to 58 Street shall be not be allowed until such time as the 2. Xcel shall replant and maintain trees, according to a plan approved by the City Arborist, to satisfy the City's tree replant requirements. 3. The plans shall be subject to review and approval of the City Engineer. 4. The location of the gate and fencing for the post closure access road shall be subject to City approval. 5. The City staff shall review the status and condition of the road entering the area at the end of the cell life and determine whether the road should be paved. If so, the applicant shall pave same or apply such other road treatments as the staff recommends. 6. At the end of the cell life, City staff shall review the status of the Cover Park parking lot previously installed by Xcel, and Xcel shall modify same to final site conditions including fill against hockey boards. 7. The City Engineer shall review the existing cul-de-sac on 58 Street and recommend any changes to resolve drainage issues that may presently exist before any connection to the cul-de-sac is made by the applicant. 8. Xcel shall ensure that adequate dust controls measures are implemented at all times. Xcel shall install appropriate automatic sprinkling systems and implement other improvements to control dust during the weekends. All such systems shall be subject to review and approval of City staff. Iv. This Conditional Use Permit is issued in addition to and not in replacement of any other permits previously issued by the City to this permit holder. IN WITNESS WHEREOF, the parties have set forth their hands and seals. CITY OF OAK PAt EIGHTS Date: By 001 Date: access from Beech Road is discontinued. Emergency vehicle access shall be provided in the long term from 58 Street. avid Beaudet, Mayor Eric Johnson City Administrator Exhibit A Moelter Site — Fly Ash Depository Legal description(s) Washington County GEO Code: 03.029 20.22.0001 Legal Description: W 1/4 N 1 /4 032920 BAST OF RR SUBS TO EAS 13 c Washington County GEO Code: 03,029.20.22.0002 Legal Description: ALL THAT PT N I /4 OF W I /4 032920 PT BLF { LTS ADD & PT 0 FOAK PARK ADD, ON FILE & OF RE CORK IN OFFICE REG DEEDS DESC A Exhibit 13 SITS PLAN AND PROJECT ATTACHMENTS 0 r 1 11 Go }-1 1-1 E- 0 CI) z 0 0 .0 0 U.) VT, • • , .... „ .'"44 • , " ' et' '1 6 ..... .(,1 )1 ' • . A 1,!1 f ' 0 z 0 Doi tivl'IZ 1.7 ROTI.i 009'01 1.00'01VZ 8 004' 2. • • • ,,,,, _V tc. 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S taff - "Fod.a I niet with Sll-cll.-01.1 SUCII)PO, Sc3liol. ejjvjj.onn� e the -ental aiial with Xccl 1_-�-Fncr r additional true removal and tree roplacem.ent for thc final phase of conStl-LICtiOn at the fl asli lajid-fill West of the 58th St, ctrl -de-sac. Sharon s 11jenio of 415/06 listed t1je reniova,l of 12 si trees oil tl e a oak which <are down to the sotitti west of these West sid ofthe eha.in lin.k fence. "I"her re two III()" trees whicli will lso liave to e removed for g radin g . Since all the trees on the west side of that Fence a b ic -t SC screenin of the landfill site fi-orn the ,,ad mlill now be rei-rioved, �t will 1111hff O GMPO rnlim resicleli ili I think the replacement I 1 the ,,, 11,,:1ve Xcel 1 )a y a -Fee "in lieu of plant' t al ])ropertles. Ms. Sarap -Cind I also t-1-ces �Jjould be planted on ffic Xc pr(),DerL to provide additional screening. e, died due to tack • Cliscussed 1junjerous trees in the area w1licl.1 were planted in past y ears b Xcel and hav i of c are. Thero, (Ire als 3 red pine (approx. 12 11. tal.1) which will nc�ed to be moved with a tree Spade sln-cc the are in the patli of the proposed access road. Conse the tree plantin and I'Gpl'acen,lent recomi-Ilended collq n and deciduous trees which ists of replacement of 7 of the ever e previousl died most on the cast side of the trail fi-om the cttl-de-sac), plantin of 7 trecs as re, placement for the si trees bein removed i tjjj.<,, ctil,I-elit phase of construction, and ti- - nsp 1,1. tin of the , 1 t. red pine menfloned above. At the site review meetin 4/5, Mr. Knutson I 11 g 3 2 f ]so stated that. the could plant 3, 6 ft. "Mack ills" spruce in the area northwest of the trail to replace 0 antin the wood which will be. rcniovcd 'in this phase. After pl Screenin P rovided b flie lar cottonwo trees should each. be, watered and mulched with 4-6 inches of wood chip niti-Ich in an area several ficet Mit frOITI the, tR111,kon all sides, Supplemental waterin will need to be done for the first season after �1'ljerc is aniple- area to plant trees around the C111- t established well. plantin to ensure that the trees ge de --sac includin the castern side to providc�some screen -in for ffic tall 11OUSC. 1"he SPC�Cics reconiniendcd for phintin inclti&: river birch, red maple, bicolor oak, bur oak,, basswood, hone report, please contact ii-ic. ,"Ind Black Hills" W111 1C S l -ds f have an q uestioi re tt Kath Widin Axborist ON I E XH I BRT 6- Vis m Imp ��t A 2008 Vertical Expansion !� A.S. Kin Ash Disposal Facilit MPCA Permit No. S W -54 A.S. Kin Generatin Plant Oak Park Hei Prepared for Northern States Power Compan a Minnesota corporation In Xcel En June 24, 2008 Prepared b McCain and Associates, Inc. i-ti"� Visual Impact Analysis 2008 Vertical Expansion A.S. King Ash Disposal Facility MPCA Permit No. SW -54 A.S. King Generating Plant Oak Park Heights, Minnesota Table of Contents Description of Visual Impact Analysis Figure 1 Photo Rendering Location Map (current and permitted conditions) Figure 2 Photo Rendering Location Map (proposed conditions) Figure 3A Current Conditions, Camera Location 1 Figure 3B Permitted Conditions, Camera Location 1 Figure 3C Proposed Conditions, Camera Location 1 Figure 4A Current Conditions, Camera Location 2 Figure 4B Permitted Conditions, Camera Location 2 Figure 4C Proposed Conditions, Camera Location 2 Figure SA Current Conditions, Camera Location 3 Figure SB Permitted Conditions, Camera Location 3 Figure SC Proposed Conditions, Camera Location 3 Visual Impact Analysis 2008 Vertical Expansion A.S. King Ash Disposal Facility This report presents an analysis of visual impacts from the proposed vertical expansion of the A.S. Ding Ash Disposal Facility. The analysis consists of presentation of rendered photographs taken from three vantage points around the facility. For each vantage point, three depictions are presented: 1) Original photograph (how the site appears as of the date of the photograph) 2) Previously permitted conditions (how the facility would appear as previously permitted, peak elevation 847.5) 3) Proposed conditions (how the facility would appear with the vertical expansion, peak elevation 877.4) Photographs of the site were taken on May 7, 2008 for Camera Location 1 (north frontage road on Hwy 36 in front of the County Government Building), and on May 15 for Camera Location 2 (top of entrance ramp to westbound Hwy 36 at Beach Road) and Camera Location 3 (east facility property line, in front of the bed - and - breakfast). The coordinate locations and elevations for each camera location and target direction were surveyed so that an accurate perspective could be produced. In order to accurately portray the future conditions, a three - dimensional CAD model was developed for permitted and proposed site conditions. The CAD model was then "viewed" from the surveyed camera and target locations in a perspective mode that accurately displays a camera perspective view. A "wireframe" model of the future conditions was extracted from the CAD model for each perspective and converted to a graphic file format for rendering. The wireframe models of future conditions were superimposed on the photographs, and rendered with a turf grass texture using Photoshop CS2 software to produce the final rendered images. Figures 1 and 2 show in plan view the limits of future site development for permitted and proposed conditions, respectively, along with the camera locations and fields of view. Figures 3A, 3B, and 3C show existing conditions, permitted conditions, and proposed conditions, respectively, from Camera Location 1. 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Aw ^ t s u } 4 L°t ' + k , } y r - M. ry i- - _0 -4 ILI c m z , E - �p4 a w F v 3 . m r 1 1 I w ¢ e e. i h - • 3 w. , _ o : ` 3 ' - _ e AT - 'x - u "Y r - ■ i s � x .. _ 6> C iw =Ta`c'k - si ra m - NV 4t7 =Z V6 9DOZ /gZl9 `Ideouoo wed `bmp'sinoluoo AA Idoouoo\bmptdx3 gpoZklddV }cud a ZQLONS"SV\SIDafoJdl:d �� EXHIBIT K Julie Hultman Fn»nm. K.D.VVidin [kdwidin@oonncasLneO Sent: Thursday, July Q3.2OO87:47AM To: Eric Johnson; W1arkVledimg (E-mail); Dennis PosUar (E-mail); Scott Richards; Jimmy Butler Judy Holst; Julie Hultman; Tom Dzze|o Subject: Xcel Energy amended C.U.P. OPH Staff ' Xoe| Energy will need to submit an actual landscape plan for the permit revisions/amendments for the expansion of the A.S. King Ash Disposal Facility, instead ofjust a concept image. The plan should contain information on name, number and type of planting stock for each tree or shrub type to be planted, a planting detail showing in what manner trees and shrubs are to be installed, and the plan itself, depicting the plant layout on site with reference markers of direction and scale. Please forward these comments tothe developer. Contact me if you have any questions. KathyVVidin OPH Arboriot �