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HomeMy WebLinkAbout2013-08-27 CDRB Packet AGENDA CITY OF MAPLEWOOD COMMUNITY DESIGN REVIEW BOARD Tuesday, August 27, 2013 6:00 P.M. Council Chambers -Maplewood City Hall 1830 County Road B East 1.Call to Order 2.Roll Call 3.Approval of Agenda 4.Approval of Minutes: a.July 23, 2013 5. Unfinished Business: 6.Design Review: a.Approval of Design Review for Exterior Remodel, Kohl’s, 3001 White Bear Avenue b.Approval of Design Reviewfor Tennis Court Addition,Hill Murray School,2625 Larpenteur Avenue c.Approval of Design Reviewand Parking Waiver for Lab and Office Building,3M Company,McKnight Road and Conway Avenue 7.Visitor Presentations: 8.Board Presentations: 9.Staff Presentations: 10.Adjourn MINUTES OF THE MAPLEWOOD COMMUNITY DESIGN REVIEW BOARD 1830 COUNTY ROAD B EAST, MAPLEWOOD, MINNESOTA TUESDAY, JULY 23, 2013 1.CALL TO ORDER Chairperson Ledvinacalled the meeting to order at6:01p.m. ROLL CALL 2. Boardmember, Leo BurgerPresent Absent Boardmember, Bill Kempe Absent Boardmember,Jason Lamers Chairperson,Matt LedvinaPresent Boardmember,Ananth ShankarPresent Staff Present: Michael Martin, Planner 3.APPROVAL OF AGENDA BoardmemberShankarmoved to approve the agenda as submitted. Seconded by BoardmemberBurger.Ayes -All The motion passed. 4.APPROVAL OF MINUTES BoardmemberShankarmoved to approve theJune 25, 2013,CDRB minutes as submitted. Seconded by Boardmember Burger.Ayes –All Motion passed. 5.UNFINISHED BUSINESS None 6.DESIGN REVIEW a.Design Reviewfor building additions to the Police department at Maplewood City Hall, 1830 County Road B East. i.Planner, Mike Martingave the report and answered questions for the building additions to the Police department at the Maplewood City Hall ii.Maplewood IT Director and Project Manager for the addition, Mychal Fowlds, answered questions of the board. iii.AIA, Project Manager, Laurence KochwithSEH, 3535 Vadnais Center Dr, St. Paul, 55110 answered questions of the commission. July 23, 2013 Community Design Review Board Meeting Minutes 1 Boardmember Shankarmoved to approvethe plans date-stamped July 11, 2013, for the proposed additions to Maplewood City Hall for the Police Department expansion. This approval includes a parking waiver for 74 fewer parking spaces than code requires since a)city hall has adequate parking available for its needs, b) there are no new employees proposed that would impact parking needs and, c) many employees have already relocated to 1902 County Road B which opens up several parking spaces at city hall. Approval is subject to the applicant (additions are in bold and underlined) complying with the following conditions:. 1.The applicant shall meet all building code and fire code requirements and comply with all requirements as outlined in the engineering report dated July 15, 2013, by Jon Jarosch. 2.The applicant shall plant four trees preferable within the city hall campus if suitable locations can be found. As an alternative, they shall be planted in Maplewood parks, subject to the approval of the director of parks and recreation. 3.The applicant shall work with community development staff to incorporate elements of the adopted city hall campus plan into the police department additions. 4.A landscaping plan shall be submitted for staff approval detailing landscaping around all mechanical equipment. Chairperson Ledvina added a friendly amendment to add condition 4. Seconded by BoardmemberBurger.Ayes –All The friendly amendment was approved by the motioner and seconder. The motion passed. b.Design Review for areinforced-turf parking lot addition at the Bruentrup Farm, 2170 County Road D East. i.Planner, Mike Martin gave the report and answered questions of the board. ii.President of the Maplewood Historical Society, Bob Jensen addressed and answered questions of the board regarding the reinforced turf parking lot addition at Bruentrup Farm at 2170 County Road D East. Boardmember Shankar moved to approvethe conditional use permit revision resolution for the 24 Bruentrup Farm, located at 2170 County Road D East, to allow the addition of a -stall reinforced turf parking lot for overflow parking and a new sidewalk from the existing parking lot to the garage. Approval is based on the findings required by ordinance and subject to the following conditions: 1.All of the conditions of the existing conditional use permit approval, as required by the city council on July 27, 2009, shall remain in effect. 2.Minor revisions may be approved by staff. 3.Construction shall begin on the proposed turf parking lot within one year or thisapproval shall end. The city council may extend this approval for one additional year. July 23, 2013 Community Design Review Board Meeting Minutes 2 4.The city engineer, police chief and fire chief shall review the plans, as required by ordinance, before construction on the turf parking lot can begin. 5.Screening mustbe provided, as proposed, to buffer the proposed parking lot from the neighbor to the east. This screening shall be completed before the parking lot may be used, unless the applicant provides escrow to guarantee its completion. Escrow shall be, as is typically required, in the amount of 150 percent of the cost of installing the landscaping. Seconded by BoardmemberBurger.Ayes –All The motion passed. 7.VISITOR PRESENTATIONS None 8.BOARDPRESENTATIONS None 9.STAFF PRESENTATIONS None 10.ADJOURNMENT The meeting was adjourned by Chairperson Ledvinaat6:44p.m. July 23, 2013 Community Design Review Board Meeting Minutes 3 MEMORANDUM TO:Chuck Ahl, City Manager FROM:Tom Ekstrand, Senior Planner SUBJECT:Approval of the Exterior Remodeling Plans and Sign Relocation for Kohl’s at the Maplewood Mall LOCATION:3001 White Bear Avenue DATE:August 20,2013 INTRODUCTION Project Description As stated in the applicant’s letter: Kohl’s is proposing a “minor exterior façade refresh.” The exterior scope of work is limited to the North and South elevations at the existing entrance/exit ways. The scope at the entries will include new painted EIFS/DEFS with minor framing over the existing structure, new white aluminum column wraps over existing/new steel columns, new tube steel “eyebrow” painted white to match existing and new brick/masonry infill areas to match existing above at North entry only. We are also proposing to replace the existing five-foot-high Kohl’s sign with a new five-foot-high Kohl’s LED sign in the newly proposed location on the North elevation as well as replace one pair of existing swing doors with a new auto-slider at both the North and South entries. No modifications to the existing building core footprint, structure, sidewalks or landscaping are proposed as part of the scope of work. Refer to the attachments and plans. Requests Approval ofthe store-front remodeling plans Approval to move the northerly “Kohl’s” sign to a higher location DISCUSSION Staff has no concern with the proposed building remodeling plans or the proposed sign relocation and complements the applicant on these proposed improvements to Kohl’s. RECOMMENDATION Approve the design plansdate-stamped August 6, 2013 for exterior remodeling and sign relocation proposal for Kohl’s at the Maplewood Mall. REFERENCE INFORMATION SITE DESCRIPTION Existing land use:Maplewood Mall with Kohl’s as a major anchor store SURROUNDING LAND USES The Maplewood Mall and mall parking lot PLANNING Land Use Plan designation: C(commercial) Zoning: BC (business commercial) APPLICATION DATE The applicationfor this request was considered complete on August 6,2013.State law requires that the city decide on theseapplications within 60 days. The deadline for city council action on this proposal is October 5, 2013. p:sec2N\Kohls Remodeling Proposal CDRB Report 8 13 te Attachments: 1.Location/ZoningMap 2.Site Plan 3.Building Elevations 4.Applicant’s Letter dated August 5, 2013 5.Plans date-stamped August 6, 2013 (separate attachment) MEMORANDUM TO: Charles Ahl,City Manager FROM: Michael Martin, AICP, Planner Melinda Coleman, Assistant City Manager/Community Development Director SUBJECT:Approval of a Resolution for a Conditional Use Permit Revision and Design Approval, Hill-Murray School LOCATION: 2625Larpenteur Avenue East DATE: August 12, 2013 INTRODUCTION Project Description Larry Wacker, of Sanders Wacker Bergly,representing Hill-Murray School, is proposing to construct tennis courts at the southeast corner of the school property, adjacent to Larpenteur Avenue. The tennis court facility would include eight tennis courts, sidewalks, bleacher seating, a small plaza for staging and gathering and a small storage shed. The tennis courts will not have any lighting. The school does not currently have any tennis courts because of a previous building expansion that removed the courts. According to the applicant, the proposed location of the facility is the only buildable space on the school property that is large enough to accommodate the courts and is not devoted to other uses. The project design will require minor grading on the adjacent property, now owned by the Harriet Tubman Center. Officials of HillMurray and Harriet Tubman have met and have agreed on the design of the tennis court project as shown on the attached drawings. To move forward with this project Mr. Wacker and Hill Murray School is requesting city approval of the following: 1.Revisions to the conditional use permit (CUP). They are proposing changes to the approved plans for the school. The city code requires a CUP for schools. 2.Design approval for tennis courts on the east side of the property. This includes the architectural, site and landscape plans for the project. BACKGROUND August 24, 1992: Council approved a sign size variance for a 99-square-foot wall sign for Hill- Murray. At the time the code allowed 24 square feet. On April 8, 1996, the city council approved a conditional use permit (CUP) for Hill-Murray to make changes and improvements to their athletic fields. This approval was subject to ten conditions. On July 14, 1997, the city council reviewed the CUP for Hill-Murray. At this meeting, the council changed Condition 8 of the 1996 approval to read as follows: “Applicant may be required to plant 30 native species of trees for screening between the playing fields and the homes on Knoll Circle, as may be determined at a future hearing on the conditional use permit.” 1 On May 11, 1998, the city council approved a wetland buffer setback variance and a conditional use permit revision for the Hill-Murray athletic facilities. These requests were to update and revise the plans that the city had approved for the school’s athletic facilities in 1996 and in 1997 and were subject to several conditions. On June 28, 1999, the city council approved the following for Hill-Murray High School: 1.Revisions to the conditional use permit (CUP). They proposed several changes to the approved plans for the school. The city code requires a CUP for schools. This approval was for the school to replace and expand the school’s main entry, which they have now completed. The school also proposed an expanded parking lot on the east side of the school building. 2.The designs for an addition to the mainentry of the school. This included the architectural, site and landscape plans for the project. On November 13, 2001, the city council approved a CUP revision for the school. This revision was for plans for an addition on the west side of the school that included a chapel and a student entrance. On August 28, 2006, the city council approved a CUP revision and the project plans for the school. These approvals were so that Hill-Murray could: 1.Put a 31,500-square-foot addition onto the east side of the field house for additional gym and locker room space. 2.Renovate and remodel the interior of the existing athletics building. DISCUSSION Conditional Use Permit Revisions The proposed tennis courtaddition meets the findings for aCUP approval and would be compatible with the existing school and the development in the area. None of the proposed changes nor the addition should cause any problems for the city or for the neighbors. Design Review Site and Layout Plan The proposed tennis courts will have roughly a north-south orientation with foursets of bleachers on the east and west sides of the facility. An existing sidewalk will provide a path from the school to the tennis courts and the walk will continue around the perimeter of the facility to each of bleacher sets. A proposed concrete pad on the northeast corner of the site would be for a 12’ by 12’ wood storage shed. Because of the grading of this site,retaining walls are required on both the east and west sides of the complex. Any retaining walls four feet or over will be required to have a fence as required by code. 2 Parking Considerations The school is not proposing an increase in itsstudent population with this project. As such, this project will not create a need for additional parking for the school.However, the removal of 20 parking spaces is needed for the tennis complex. In 2006, the school added these 20 spaces for additional parking but they were not required by city code. The city code requires schools to provide one parking space for every 20 seats in an auditorium. After the removal of the 20 spaces the school will still have 405 parking spaces which far exceeds the code requirements for this site. Landscaping Within the project site, there are 40 significant trees. The applicant is proposing to remove 28 significant trees. Because the overall campus is large, the applicant is removing less than 20 percent of the significant trees on site and is only required to replace trees on a one-to-one basis. The code requires 28 trees beplanted and the applicant is proposing 30 new deciduous trees. South of the tennis courts, the applicant is proposing a basin to help meet its stormwater treatment requirements. The applicant has proposed to seed the basin but staff is concerned with the amount of water entering the basin, which would wash awaythe seeds. Staff recommends the basin be planted with a mix of trees, shrubs and perennials. DEPARTMENT COMMENTS Staff engineer Jon Jarosch and the city’s natural resources coordinator Ginny Gaynor have both reviewed this proposal and submitted reports. Please refer to the attachments for their reports. RECOMMENDATIONS A.Adopt the attached resolution. This resolution approves revisions for the conditional use permit for Hill Murray Schooland tennisfacilitiesat 2625 Larpenteur Avenue East. The city bases this approval on the findings required by ordinance. Approval is based on the findings required by the code and subject to the following conditions(deletionsare crossed outand additions are underlined): 1.All construction shall follow the plansdate-stamped July 29, 2013as noted below: a.For the athletic fields, follow the plans date-stamped March 6, 1998. b.For the school and parking lot addition, follow the plans date-stamped May 19, 1999. c.For the chapel addition, follow the plans date-stamped October 1, 2001. d.For the field house, follow the plans dated June 28, 2006.These plans shall meet all the conditions and changes required by the city engineering department. The interimdirector of community development may approve minor changes. 3 2.The proposed construction for thetennis court complexfield houseaddition must be substantially started within one year of council approval or the permit revision shall end. The council may extend this deadline for one year. 3.The city council shall review this permit annually to monitor the traffic and parking situations related to the use of the athletic fields. 4.Any new lights shall be installed to meet the city code. This requires that they be screened or aimed so they do not cause any light-glare problems on streets or residential properties. 5. Post and maintainsigns on the edge of the wetland-protection buffer prohibiting any building, mowing, cutting, filling or dumping within the buffer. Wetland buffer signs in the mowed area shall be placed at the edge of the lawn. 6. That portion of the proposed walking/running path that is within 50 feet of the wetland shall be built with a pervious material. 7. Ensure that allbleachers and dugouts are at least 30 feet from the Sterling Street and Larpenteur Avenue right-of-ways. 8. The city may require the applicant to plant 30 native species of trees for screening between the playing fields and the homes on Knoll Circle, as may be determined at a future hearing on the conditional use permit. 9. Theschool shall prepare for city approval a turf management plan for the athletic fields. This plan shall include the mowing, watering and fertilizing practices that the school willfollow in the care of their athletic fields and grounds. The school shall prepare and follow the plan sothe practices will minimize the impact of the storm water runoff on the nearby wetlands. 10. Submit a grading and drainage plan for watershed district approval to provide sedimentation control at the stormwater discharge point before it dumps into the south wetland area. B. Approve the project plans date-stamped July 29, 2013, (site plan, landscape plan, grading and drainage plans and elevations)for the tennis court complexaddition at HillMurray School at 2625 Larpenteur Avenue. The city bases this approval on the findings required by the code. The developer or contractor shall do the following: 1.Repeat this review in two years if the city has not issued a building permit for this project. 2.Complete the following before the city issues a building permit: a.Have the city engineer approve final construction and engineering plans. These plans shall include: grading, utility, drainage, erosion control, tree and sidewalk plans. The plans shall meet all the conditions and changes noted in Jon Jarosch’smemo dated August 1, 2013 and in Ginny Gaynor’s memo dated August 6, 2013. 4 b.Provide the city with a letter of credit or cash escrow for all required exterior improvements. The amount shall be 150 percent of the cost of the work. 3.Complete the following before occupying the addition: a.Replace property irons that are removed because of this construction. b.Restore and sod damaged turf areas. c. Complete all landscaping for theaddition. d.Install and maintain all required trees and landscaping (including theplantings around the pond) and an in-ground sprinkler system for all landscaped areas (code requirement). 4.If any required work is not done, the city may allow temporary occupancy if: a.The city determines that the work is not essential to the public health, safety or welfare. b.The above-required letter of credit or cash escrow is held by the city for all required exterior improvements. The owner or contractor shall complete any unfinished landscaping by June 1 of the next year if the building is occupied in the fall or winter, or within six weeks of occupancy if the building is occupied in the spring or summer. 5. All work shall follow the approved plans. The director of community development may approve minor changes. 5 CITIZENS' COMMENTS Staffsurveyed the owners of properties within 500 feet of the projectsite. Staff received one positive comment from the Tubman Center. For: I have reviewed the Hill Murray Tennis Court proposal received from the City of Maplewood. As stated in the memorandum from the landscape architects, Tubman representatives havemet with Hill-Murray and have agreed on the location and design, and we are in support of Hill-Murray moving ahead with their project. (Christine M. Brinkman,Chief Operating Officer, Tubman) 6 REFERENCE INFORMATION SITE DESCRIPTION Site size: 47 acres Existing land use: Hill-Murray School and athletic fields SURROUNDING LAND USES North:Single dwellings and undeveloped property South:Larpenteur Avenue and single dwellings West:Sterling Street, ponds and The Maplewoods Apartments East:Tubman Center and the St. Paul Priory PLANNING: Land Use Plan designation: I (Institution) Zoning: R-3 (multiple dwelling residential) Ordinance Requirements Section 44-1092(3) requires a CUP for schools. Section 44-1103(b) requires a CUP to enlarge a use for which a CUP is required. Criteria for Conditional Use Permit Approval Section 44-1097(a) states that the city council may approve a CUP, based on nine standards. Ordinance Requirements Section 2-290(b) of the city code requires that the community design review board make the following findings to approve plans: 1.That the design and location of the proposed development and its relationship to neighboring, existing or proposed developments, and traffic is such that it will not impair the desirability of investment or occupation in the neighborhood; that it will not unreasonably interfere with the use and enjoyment of neighboring, existing or proposed developments; and that it will not create traffic hazards or congestion. 2.That the design and location of the proposed development is in keeping with the character of the surrounding neighborhood and is not detrimental to the harmonious, orderly and attractive development contemplated by this article and the city's comprehensive municipal plan. 3.That the design and location of the proposed development would provide a desirable environment for its occupants, as well as for its neighbors, and that it is aesthetically of good composition, materials, textures and colors. 7 Application Date The city received the complete applicationsand plansfor this development on July 29, 2013. State law requires that the city take action within 60 days of receiving complete applications for a proposal. As such, city action would normally be required on this proposal by September 27, 2013, unless the city files for or the applicant agrees to a time extension. P:\SEC13-29\LARPENTEUR_2625_Hill Murray\CUP Revision_2013 Attachments: 1.AreaMap 2.LocationMap 3.Land Use Map 4.Zoning Map 5.Project Narrative 6.Proposed LayoutPlan 7.Proposed PlantingPlan 8.Jon Jarosch Report, dated August 1, 2013 9.Ginny Gaynor Report, dated August 6, 2013 10.Conditional Use Permit Revision Resolution 11.Project Plans (Separate Attachment) 8 CONDITIONAL USE PERMIT REVISION RESOLUTION WHEREAS, Hill-Murray School requested that the city revise their existing conditional use permit for a school and athletic facilities. WHEREAS, this permit applies to the property at 2625 Larpenteur Avenue East. The legal description is: Part of the S ½ of the SE ¼ of S 13, T 29N, R22W, Ramsey County,MN (PIN 13-29-22-43- 0002) WHEREAS , the history of this conditional use permit revision is as follows: 1.On August 20, 2013the planning commission held a public hearing. The city staff published a notice in the paper and sent notices to the surroundingproperty owners. The planning commission gave persons at the hearing a chance to speak and present written statements. The commission also considered reports and recommendations of the city staff. The planning commission recommended that the city council_________the conditional use permit. 2.On September 9, 2013, the city council discussed the proposed conditional use permitrevision. They considered reports and recommendations from the planning commission and city staff. NOW, THEREFORE, BE IT RESOLVED that the city council approve the above-described conditional use permit revision, because: 1.The use would be located, designed, maintained, constructed and operated to be in conformity with the City's Comprehensive Plan and this Code. 2.The use would not change the existing or planned character of the surrounding area. 3. The use would not depreciate property values. 4.The use would not involve any activity, process, materials, equipment or methods of operation that would be dangerous, hazardous, detrimental, disturbing or cause a nuisance to any person or property, because of excessive noise, glare, smoke, dust, odor, fumes, water or air pollution, drainage, water run-off, vibration, general unsightliness, electrical interference or other nuisances. 5.The use would not exceed the design standards of any affected street. 6.The use would be served by adequate public facilities and services, including streets, police and fire protection, drainage structures, water and sewer systems, schools and parks. 7.The use would not create excessive additional costs for public facilities or services. 8.The use would maximize the preservation of and incorporate the site's natural and scenic features into the development design. 9 9. The use would cause no more than minimal adverse environmental effects. Approval is based on the findings required by the code and subject to the following conditions(deletions are crossed out and additions are underlined): 1.All construction shall follow the plans date-stamped July 29, 2013as noted below: a.For the athletic fields, follow the plans date-stamped March 6, 1998. b.For the school and parking lot addition, follow the plans date-stamped May 19, 1999. e.For the chapel addition, follow the plans date-stamped October 1, 2001. f.For the field house, follow the plans dated June 28, 2006. These plans shall meet all the conditions and changes required by the city engineering department. The interimdirector of community development may approve minor changes. 2.The proposed construction for the tennis court complexfield houseaddition must be substantially started within one year of council approval or the permit revision shall end. The council may extend this deadline for one year. 3.The city council shall review this permit annually to monitor the traffic and parking situations related to the use of the athletic fields. 4.Any new lights shall be installed to meet the city code. This requires that they be screened or aimed so they do not cause any light-glare problems on streets or residential properties. 5. Post and maintainsigns on the edge of the wetland-protection buffer prohibiting any building, mowing, cutting, filling or dumping within the buffer. Wetland buffer signs in the mowed area shall be placed at the edge of the lawn. 6. That portion of the proposed walking/running path that is within 50 feet of the wetland shall be built with a pervious material. 7. Ensure that all bleachers and dugouts are at least 30 feet from the Sterling Street and Larpenteur Avenue right-of-ways. 8. The city may require the applicant to plant 30 native species of trees for screening between the playing fields and the homes on Knoll Circle, as may be determined at a future hearing on the conditional use permit. 9. The school shall prepare for city approval a turf management plan for the athletic fields. This plan shall include the mowing, watering and fertilizing practices that the school will follow in the care of their athletic fields and grounds. The school shall prepare andfollow the plan so the practices will minimize the impact of the storm water run off on the nearby wetlands. 10 10. Submit a grading and drainage plan for watershed district approval to provide sedimentation control at the storm water discharge point beforeit dumps into the south wetland area. The Maplewood City Council _____________this resolution on September 9, 2013. 11 Attachment 1 Public Safety Training Center Hill Murray School Priory Open Space Chad Bergo Proposed Tennis Court Complex - 2626 Larpenteur Avenue Area Map 12 Attachment 2 Proposed Tubman Center Tennis Courts Hill Murray School Priory Open Space Proposed Tennis Court Complex - 2625 Larpenteur Avenue Location Map 13 Attachment 3 High Density Residential Proposed Tennis Courts Institutional Low Density Residential Open Space Proposed Tennis Court Complex - 2625 Larpenteur Avenue Future Land Use Map 14 Attachment 4 Multi-Family Residential Proposed Tennis Courts Farm Open Space Proposed Tennis Court Complex - 2625 Larpenteur Avenue Zoning Map 15 Attachment 5 16 Attachment 6 17 Attachment 7 18 Attachment 8 Engineering Plan Review PROJECT: Hill Murray Tennis Courts PROJECT NO: 13-08 COMMENTS BY: Jon Jarosch, P.E. – Staff Engineer DATE: 8-1-2013 PLAN SET: Preliminary Plans dated 7-10-2013 REPORTS: Storm Water Management Report dated 7-10-2013 Hill Murray is proposing to construct a tennis court facility at the south east corner of its property.The proposed court area currently consists of a grassy hillside.Due to the addition of impervious surfacesin excess of 5,000 square-feet,the applicant is required to meet the City’s storm water quality and rate control requirements. The plans as proposed do not appear to meet these requirements and will need to be modifiedas further detailed below. The applicant is requesting design review. Thisreviewdoes not constitute a final review of the plansas the applicant will need to submit construction documents for final review, along with ratified agreements, prior to issuing building and grading permits.The following are engineering review comments, and act as conditions prior to issuing demolition, grading, sewer, or building permits. Drainage and Stormwater Management 1)It appears from the hydraulic calculations submitted that the proposed storm sewer system and infiltration basin does not meet the City’s rate control requirements. The system shall be modified to meet the City’s requirements. 2)The pipe between CBMH-2 and the infiltration basin is shown to have flow velocities in excess of 10 feet per second. Flow velocities such as this are likely to cause erosion at the outlet. This pipe run shall be modified to slow the flow velocity. A drop structure is advised before the pipe outlets into the infiltration basin. 3)A high water level and emergency overflow shall be shown on the plans fortheboth the infiltration basin and thebasin surrounding CBMH-2. The overflowswill need to have proper stabilization. 4)Energy dissipation (rip-rap, etc.) shall be extendedto the basin bottom from the pipe discharging into the infiltration basin. A dropstructure and pipe extending to the basin bottom is recommended. 19 Attachment 8 5)The maximum depth of infiltration basins is 2-feet per the City’s Stormwater Standards. The infiltration basin shall be revised to reflect this requirement. 6)Soils information shall be submitted providing support for the infiltration rates utilized in the hydraulic calculations. The soil boring utilized for the basins infiltration rate shall be taken within the basins footprint. 7)It appears that over double the required infiltration volume has been provided. It is recommended that drain-tile be installed beneath the basin to ensure the basin draws down. Adding drain-tile would result in the basin being considered a filtration basin, receiving a 70% credit for volume reduction. The basin wouldstill meet the volume reduction requirements with this reduced volume credit. 8)Submit specifications and sequencing for the proposedstorm sewer andinfiltration basin construction such that impacts to the basin bottom do not affect the infiltration capability of the soils. 9)The applicant should consider connecting the infiltration basin overflow pipe to the existing catch-basin near the entrance drive. 10)The applicant shall ensure that the inlet capacity of the slot drain system is adequate for the area draining to it. 11)It appears that an existing storm sewer pipe crossing the entrance drive is to be removed. Please call this out on the plans. Grading and Erosion Control 12)It appears that retaining walls are proposed in excess of 4-feet in height. As such, these retaining walls shall be designed and certified by an engineer licensed in the state of Minnesota. Likewise, a fence is required along the portions of the wall 4-feet in height or taller. 13)Due to the steep slopes and high potential for erosion, all disturbed areas shall be stabilized immediately after final grading.Steep slopes should be broken into shorter runs through the use of silt fence, bio-rolls, or other methods of erosion control.This is crucial in the infiltration basin area to prevent sedimentation. 14)All emergency overflows shall be adequately stabilized. 15)There is a high potential for erosion off of the northeast corner of the tennis courts. The applicant shall ensure that this area is adequately stabilized. 20 Attachment 8 16)Silt fence, bio-rolls, etc. shall be installed at the limits of grading along the north and west sides of the site. 17)Infiltration basins shall be protected from erosion and sedimentation throughout construction. 18)Inlet protection devices shall be installed on the existing stormsewer in the entrance drive area as well as all proposed storm sewer.These inlet protection devices shall be noted on the plans. 19)Larpenteur Avenue and the entrance drive areashall be swept as needed to keep the road clear of sediment and construction debris. 20)All pedestrian facilities shall be ADA compliant. 21)A right-of-entry or agreement shall be obtained from the adjacent property to perform the grading work shown on the plans east of the tennis courts. A copy of this document shall be submitted to the City prior to the issuance of grading permits. 22)It appears that a significant amount of cover (7-feet) is proposed to be removed over the existing water service. The applicant shall submit plans and specifications to Saint Paul Regional Water Services (SPRWS) for review. The applicant shall meet all requirements of SPRWS prior to the issuance of a grading permit. A copy of their approval shall be submitted to the City of Maplewood. Other 23)All civil plans shall be signed and dated by an engineer currently licensed in the state of Minnesota. 24)The developer shall submit a copy of the MPCA’s construction stormwater permit (SWPPP) to the city before the city will issue a grading permit for this project. 25)The Owner shall satisfy all requirements of allpermitting and reviewing agencies including, but not limited to, theMPCA, SPRWS, and RWMWD. 26)The Owner shall sign a maintenance agreement, prepared by the City, for all stormwater treatment devices (sumps, basins,infiltration basins, etc.). 21 Attachment 9 Infiltration Basin Planting Review Project: Hill Murray School Tennis Court Construction Date of Plans: July 10, 2013 Date of Review: August 6, 2013 Location: 2625 Larpenteur Avenue Reviewer: Ginny Gaynor, Natural Resources Coordinator (651) 249-2416, virginia.gaynor@ci.maplewood.mn.us The proposalcalls for seeding the infiltration with Seed Mix B. Due to the volume and rate of water entering the basin, seeding is not appropriate. The seed would be washed away and will not establish. Rather than seeding, the basin should be planted with trees, shrubs, and/or perennials. Please submit a landscape plan for the basin that showstheplanting design and includes species, quantities, and container size. City staff is happy to answer any questions you have on planting design. If planting costs arean issue, you may want to consider having students plant the basins. Our staff has done numerous plantings with students and can share ideas on that with you as well. 22 CONDITIONAL USE PERMIT REVISION RESOLUTION WHEREAS, Hill-Murray School requested that the city revise their existing conditional use permit for a school and athletic facilities. WHEREAS, this permit applies to the property at 2625 Larpenteur Avenue East. The legal description is: Part of the S ½ of the SE¼ of S 13, T 29N, R22W, Ramsey County, MN (PIN 13-29-22-43- 0002) WHEREAS , the history of this conditional use permit revision is as follows: 1.On August 20, 2013the planning commission held a public hearing. The city staff published a notice in the paper and sent notices to the surrounding property owners. The planning commission gave persons at the hearing a chance to speak and present written statements. The commission also considered reports and recommendations of the city staff. The planning commission recommended that the city council _________the conditional use permit. 2.On September 9, 2013, the city council discussed the proposed conditional use permitrevision. They considered reports and recommendations from the planning commission and citystaff. NOW, THEREFORE, BE IT RESOLVED that the city council approve the above-described conditional use permit revision, because: 1.The use would be located, designed, maintained, constructed and operated to be in conformity with the City's ComprehensivePlan and this Code. 2.The use would not change the existing or planned character of the surrounding area. 3. The use would not depreciate property values. 4.The use would not involve any activity, process, materials, equipment or methods of operation that would be dangerous, hazardous, detrimental, disturbing or cause a nuisance to any person or property, because of excessive noise, glare, smoke, dust, odor, fumes, water or air pollution, drainage, water run-off, vibration, general unsightliness, electrical interference or other nuisances. 5.The use would not exceed the design standards of any affected street. 6.The use would be served by adequate public facilities and services, including streets, police and fire protection, drainage structures, water and sewer systems, schools and parks. 7.The use would not create excessive additional costs for public facilities or services. 8.The use would maximize the preservation of and incorporate the site's natural and scenic features into the development design. 23 9. The use would cause no more than minimal adverse environmental effects. Approval is based on the findings required by the code and subject to the following conditions(deletions are crossed out and additions are underlined): 1.All construction shall follow the plans date-stamped July 29, 2013as noted below: a.For the athletic fields, follow the plans date-stamped March 6, 1998. b.For the school and parking lot addition, follow the plans date-stamped May 19, 1999. e.For the chapel addition, follow the plans date-stamped October 1, 2001. f.For the field house, follow the plans dated June 28, 2006. These plans shall meet all the conditions and changes required by the city engineering department. The interimdirector of community development may approve minor changes. 2.The proposed construction for the tennis court complexfield houseaddition must be substantially started within one year of council approval or the permit revision shall end. The council may extend this deadline for one year. 3.The city council shall review this permit annually to monitor the traffic and parking situations related to the use of the athletic fields. 4.Any new lights shall be installed to meet the city code. This requires that they be screened or aimed so they do not cause any light-glare problems on streets or residential properties. 5. Post and maintainsigns on the edge of the wetland-protection buffer prohibiting any building, mowing, cutting, filling or dumping within the buffer. Wetland buffer signs in the mowed area shall be placed at the edge of the lawn. 6. That portion of the proposed walking/running path that is within 50 feet of the wetland shall be built with a pervious material. 7. Ensure that all bleachers and dugouts are at least 30 feet fromthe Sterling Street and Larpenteur Avenue right-of-ways. 8. The city may require the applicant to plant 30 native species of trees for screening between the playing fields and the homes on Knoll Circle, as may be determined at a future hearing on the conditional use permit. 9. The school shall prepare for city approval a turf management plan for the athletic fields. This plan shall include the mowing, watering and fertilizing practices that the school will follow in the care of their athletic fields andgrounds. The school shall prepare and follow the plan so the practices will minimize the impact of the storm water run off on the nearby wetlands. 24 10. Submit a grading and drainage plan for watershed district approval to provide sedimentation control atthe storm water discharge point before it dumps into the south wetland area. The Maplewood City Council _____________this resolution on September 9, 2013. 25 MEMORANDUM TO:Charles Ahl,City Manager FROM: Michael Martin, AICP, Planner Melinda Coleman, Assistant City Manager SUBJECT: Design Reviewand Parking Waiverfor Lab and Office Building, 3M Company LOCATION: McKnight Road and Conway Avenue DATE: August 21, 2013 INTRODUCTION Request/Project Description 3M Companyis requesting approval of a parking waiver and site and architectural plans for aproposed lab and office buildingto be located on the northeast corner of McKnight Road and Conway Avenue.The building would be five stories and have 400,000 square feet of lab and office space. BACKGROUND April 29, 2013, the city council approved a resolution approving the findings of fact, conclusions and record of decision for the 3M Company Research and Development Building Environmental Assessments Worksheet. June 28, 2013, city staff approved a minor lot division which divides the site for the proposed research building from the rest of the 3M campus. This approval also creates aseparate legal parcel for the proposed city fire station to the north. July 22, 2013, the city council approved a tax increment financing plan for the building of the new lab and office building. DISCUSSION Site Plan The parking lot will be constructed at least 60 feet fromthe McKnight Road and Conway Avenue right-of-ways (15 feet is required by code). The parking spaces will be designed to face northwest/southeast, which will help to reduce headlight glare onto the residential properties across McKnight Road. At its closest point, the building will be more than 400 feet from the nearest residential home on the west side of McKnight Road. Architectural Design The proposed building would be a five-story, 400,000 square footstructure. Access to the site will be from Conway Avenue, 5th Street and R Avenue. A loading dock will be incorporated on the east side of the building. The main entrance to the building will be onthe second floor. The building is shaped in two wings, with the north wingtaking advantage of its proximity to 3M Lake and the east wing tying the building to the rest of the 3M campus. The proposed building would be designed to reflect the high-tech workthat is to be done within the building. The glass curtain wall will have analternating pattern of vision, spandrel and tinted panes. The end of each wingwill take on the color of brick to match most of the surrounding 3M buildings. Parking Waiver City code would require 2,000 parking spacesfor this site –one space per 200 square feet of building space. The applicant is proposing to install 580spacesand is asking for a waiver of the remaining, required 1,420 parking spaces. The parking spaces would be 9 ½ feet by 18 feet in size and drive aisles would be 24 feet wide as stipulated by code. The city’s parking code is set up for a standalone office building. The proposed building will be built within a large corporate campus, which the city’s parking code does not account for. 3M has indicated most of the employees working within the building will be relocated from other areas of the Maplewood campus meaning there should not be a huge increase in parking demand. 3M does not have a history of parking shortages so staff is comfortable with the parking waiver that isbeing requested. Trash Storage Trash storage would be inside the building. If trash would be stored outdoors, the applicant would need to provide an architecturally-compatible enclosure to store trash containers. Site Lighting The proposed light intensityplandoes not exceed .4 footcandles at property lines. Landscaping The landscaping is extensive and attractive around the building and within the parking lot andwould complement the rest of the 3M campus.Staff did have a concern regarding thelack of landscaping along the Conway Avenue and McKnight Road right-of-ways. Near 3M’s more recently built buildings landscaping had been provided near the right-of- way. Examples being along Minnehaha Avenue at 3M’s Leadership Development Institute building and at the corner of Conway Avenue and 14th Street. Staff understands the proposed building will be attractive and the applicant will not want to block its view with tall landscaping but there still is an opportunity to provide additional landscapingnear the right-of-ways. Shorelandand WetlandDistricts The entire site is located within the Shoreland Overlay District of 3M Lake. 3M Lake is a Class I water. The City’s Shoreland Ordinance allows for a maximum of 50 percent impervious surface coverage for a lot located within this District, and up to 70 percent impervious surface coverage with bonuses. The city engineer shall determine whether bonuses are allowed based on the installation and maintenance of manmade facilities for reducing stormwater flow or the treatment of runoff for non-point-source water pollutants. The site is 17.5 acres in size. The development will include 10.5 acres of impervious surface coverage (61 percent) including the building, parking lot, and sidewalks. The development requires an11 percent impervious surface bonus. Michael Thompson, city engineer, states in his review of the development that the applicant must submit a summary of how they are meeting the city’s volume reduction requirementsin order to determine if the bonus will be allowed. 3M Lake is classified as a Manage B wetland in the city’s wetland ordinance. The wetland ordinance requires a 75-foot buffer from a Manage B wetland. A site is exempt from this requirement if it is separated from the wetland by an existing road. The 3M site is separated from the wetland by one of 3M’s private roads, R Avenue. No grading is proposed on the north side of R Avenue, adjacent the wetland. Tree Preservation The applicant’s tree survey dated February 25, 2013, shows several hundred significant trees located on the site.The applicant’s tree inventory dated July 26, 2013, only reflects trees within the “developed portion” of the lot, not the trees located on the northwest corner that will be preserved.In order to calculate the tree replacement requirements, the city will need all trees on the site to be included on the tree schedule. The applicant’s planting schedule dated April 1, 2013, gives the size and species of replacement trees, and the overall quantity of shade, ornamental, and evergreen trees, but it does not specify how many of each tree species.In order to determine if the site meets the tree replacement requirements, the city will need the number of each tree species being replaced on the site. Roof-Equipment Screening Any roof-top mechanical equipment must be screened if it is visible to neighboring residentswest of McKnight Road. Signs There is a comprehensive sign plan for the 3M campus. No signs were submitted as part of the approval process. If the applicant proposes any signs in the future they will need to submit for review at a later time. City Department Comments Engineering Comments Refer to the attached Engineering Plan Reviewby Michael Thompson,public works director/city engineer,dated August 13, 2013. Environmental Comments Refer to the attached environmental review by Shann Finwall, environmental planner, dated August 21, 2013. Building Official’s Comments Dave Fisher, Maplewood’s Building Official, gave the following comments: The 3M Research Building is required to meet the State building code. The Design Professionals are required to be licensed with the State of Minnesota. Police Comments LieutenantRichard Doblar reviewed this proposal andhad the following comments: Construction site thefts and burglaries are a large business affecting many large construction projects throughout the Twin Cities metro area. The contractor/developer should be encouraged to plan and provide for site security during the construction process. On-site security, alarm systems, and any other appropriate security measures, would be highly encouraged to deter and report theft and suspicious activity incidents in a timely manner. Fire Marshal Butch Gervais, assistant fire chief/fire marshal, reviewed the proposal and requires the following be provided: The applicant is required to follow all state and local fire codes RECOMMENDATION A.Approve the plans date-stamped August 12,2013, for the proposed 3M Company ResearchBuilding. Approval is based on the findings for approval required by ordinance and subject to the developer doing the following: 1.Repeat this review in two years if the applicant has not obtained a building permit by that time. After two years this reviewmust be repeated. 2.Comply with the requirements in the Engineering Plan Review by Michael Thompson, the Environmental Plan Review by Shann Finwalland those of the Assistant Fire Chief, Building Official and Lieutenant Doblar. 3.Submit a revised landscapeplan for staff approval for additional landscaping along Conway Avenue and McKnight Road. 4.Before obtaining a building permit, the applicant shall provide an irrevocable letter of credit in the amount of 150 percent of the cost of completing landscaping and other site improvements. This irrevocable letter of credit shall include the following provisions: The letter of credit must clearly indicate that it is an irrevocable letter of credit in the name of the City of Maplewood, payable on demand, to assure compliance with the terms of the developer’s agreement. The letter of credit must allow for partial withdrawals as needed to guarantee partial project payments covered under the terms of the letter of credit. The letter of credit shall be fora one-yearduration and must have a condition indicating automatic renewal, with notification to the city a minimum of 60 days prior to its expiration. 5.All landscaped areas shall have a lawn-irrigation system installed, except for those areas proposed to be left natural. The applicant must, however, make sure to use hoses and sprinklers until turf, plant and tree growth is established. 6.If outdoor trash storage is used in the future, the applicant shall provide a screening enclosure that is compatible in design with the building. 7.Any proposed signs shall comply with thecomprehensive sign plan and shall be submitted for approval by the community design review board. 8.The applicant must submit a summary of how the site ismeeting the city’s volume reduction requirementsin order to qualify for the 11 percent impervious surface area bonus. The bonus shall be approved by the city engineer based on the installation and maintenance of manmade facilities for reducing stormwater flow or the treatment of runoff for non-point-source water pollutants. 9.The applicant must submit the following information in order to determine if the site meets the city’s tree preservation ordinance: a.Tree inventory which includes all significant trees located on the site (not just the developed area) and the size and number of significant trees removed with the development. b.Planting schedule which shows the tree species, tree size, and number of each species being replaced on the site. 10.All work shall follow the approved plans. Staffmay approve minor changes. B. Approvea parking waiver to allow for 580 surface parking spaces. The parking spaces shall be at least 9.5 feet in width. This is a parking reduction of 1,420parking spaces (2,000parking spaces are required per city code). REFERENCE INFORMATION SITE DESCRIPTION Site size: 17.5acres Existing Use: Vacant property SURROUNDING LAND USES North:Vacant property and 3M Lake South:3M Campus East:3M Campus West:McKnight Road and single-family homes in Saint Paul PLANNING Land Use Plan: I(Industrial) Zoning: M1 (Light Manufacturing) CRITERIA FOR APPROVAL Design Review Section 2-290 of the city code requires that the community design review board make the following findings to approve plans: 1.That the designand location of the proposed development and its relationship to neighboring, existing or proposed developments, and traffic is such that it will not impair the desirability of investment or occupation in the neighborhood; that it will not unreasonably interfere with the use and enjoyment of neighboring, existing or proposed developments; and that it will not create traffic hazards or congestion. 2.That the design and location of the proposed development is in keeping with the character of the surrounding neighborhood and is not detrimental to the harmonious, orderly and attractive development contemplated by this article and the city's comprehensive municipal plan. 3.That the design and location of the proposed development would provide a desirableenvironment for its occupants, as well as for its neighbors, and that it is aesthetically of good composition, materials, textures and colors. APPLICATION DATE The city received the applicant’scomplete applicationonAugust 12, 2013.State statute requires that the city act on such applications within 60 days of the city receiving a complete application. The deadline for reviewis October 11, 2013. P:\SEC36\3M\3M Research Center -NE Conway McKnight_2013\CDRB Review_Parking Waiver_2013 Attachments: 1.LocationMap 2.Site Map 3.Future Land Use Map 4.Zoning Map 5.Site Plan 6.Landscape Plan 7.Building Elevations 8.Applicant’s Narrative 9.Applicant’s Parking Waiver Request 10.Engineering Plan Review dated August 13 2013 11.Environmental Plan Review, dated August 21, 2013 12.Plans date-stamped August 12, 2013(separate attachment) Attachment 1 New Lab and Office Building 3M Campus 3M Company Location Map Attachment 2 New Lab and Office Building 3M Company Site Map Attachment 3 New Lab and Office Building 3M Company Future Land Use Map - Industrial (I) Attachment 4 New Lab and Office Building 3M Company Zoning Map - Light Manufacturing (m1) Attachment 5 Attachment 6 Attachment 6 Attachment 7 Attachment 7 Attachment 8  Project Narrative The project consists of a 5 story building at the northeast corner of Conway and McKnight on the 3M Campus in Maplewood, Minnesota. The site currently consists of undeveloped land and a surface parking lot. The site is bordered on the north side by 3M Lake. Parking for 525 vehicles is shown with proof of parking for additional vehicles. Landscaped medians will divide the rows of parking. A series of buried detention tanks will retain storm water until they are discharged. Access to the site will be from 5th Street, R Avenue to the north and from a newly created access on Conway just to the west of the Data Center. A loading dock will be incorporated on the east side of this building to bring supplies to the building. The main building entrance will be on the second floor. The primary functions of the building are research labs and offices. 3M employees currently working in other 3M buildings will relocate to this building when complete. Labs and offices are located on floors 1 thru 4. The fifth floor houses mechanical/electrical/elevator spaces. Architectural Narrative The building is shaped in two wings with the north wing taking advantage of 3M lake and the east wing tying the building to the geometric layout of the other buildings on the 3M campus. The two wings meet at a node which will be the main entrance to the building. The labs and offices are planned on the four floors in the same manner on both wings. The high intensity labs are located on one side with the low/medium intensity labs occupying the middle of each wing. A service corridor in between will serve all these labs. The offices are located on the other side of the wing from the high intensity labs. The majority of the offices will be open with no solid walls. Collaboration between researchers is a key element in the planning of spaces. Various breakout and teaming spaces will bring the teams together. Specialized Clean rooms, Constant Temperature and Humidity rooms will be located at strategic locations. An Application lab, loading dock, mechanical and electrical rooms are located in the east wing on the first floor. The fifth floor will entirely be devoted to mechanical, electrical, and elevator support spaces that will serve the building. The exterior materials chosen reflect the high tech work that will be performed in this building. A glass curtain wall with a pattern that will alternate vision, spandrel, and tinted panes will help to portray this building as one looking to the future. This will be supplemented with opaque walls at the end of the wings that take on the color of the brick of most of the 3M buildings. Prefinished metal eyebrows will help to accentuate the horizontality of the building. Retaining walls on the south side of the building will terrace up to the entrance on the second floor. The interior of the building will be highlighted in the 8,000 sf main lobby. This will be the space where the workings of 3M will be showcased. This two story space will have a bridge running through it that connects the north wing and the east wing. A large expanse of glass will look out onto 3M lake to the north. Stone wall panels, 3M graphics, and upgraded ceiling and floor materials will be used here. A small area of the lobby will have vegetation which will tie the Landscaping of the plaza outside to the interior. The majority of the lab spaces will have concrete floors with exposed structure. Walls will be painted. *??'DWD?&RPPXQLW\'HVLJQ5HYLHZ%RDUG?%:%5?:ULWWHQ1DUULWLYHRI3URSRVDOGRF[  Attachment 10 3M Revised Submittal August 12, 2013 City Eng. Comments on August 13, 2013 Page 1of 3 ENGINEERING PLAN REVIEW Developer Project Name:3M Center (NE Corner of Conway Ave & McKnight Rd) City Project No.: 12-15 Reviewed by:Michael Thompson, City Engineer Date of Submittal: August 12, 2013 Applicant Submittal No.: 2 3M Company proposes a 5 story building on a currently undeveloped lot. The building is to th serve research labs and offices with access to the site proposed from 5 Street, internal driveway, and a proposed new ¾ access on Conway Avenue. Drainage and Storm Sewer 1.Applicant shall provide stormwater narrative of the entire site for pre and post conditions, shoreland requirements, and permanentbest management practices to meet rate and volume and pollutant removals requirements. 2.Per the Engineering Standards the following is required for Storm Water Plan Submittals: a) The 10-year and 100-year high water elevations on-site. b) Construction plans and specifications of all proposed stormwater management facilities. c) Stormwater runoff volume and rate analyses for existing and proposed conditions. d) All hydrologic and hydraulic computations completed to design the proposed stormwater quality management facilities. Computations shall include a summary of existing and proposed impervious areas. e) All pollutant removal computations for practices not meeting the volume control/infiltration requirement. f) Provision of easements for maintenance access to detention basins, retention basins, underground detention/filtration system, constructed wetlands, and/or other stormwater managementfacilities. g) Maintenance agreement between developer and City which addresses sweeping, pond inspection, sediment removal and disposal, underground detention and filtration system,etc. h) Provide narrative describing the required maintenance activities for the underground detention/filtration system and verify that adequate access is provided to allow these maintenance activities to occur. i) Inlets to detention basins, wetlands, etc., shown at or below the outlet elevation. 3.Emergency overflow arrows shall be provided on the grading and drainage plan assuming all pipes are plugged. Where will the water flow? Attachment 10 3M Revised Submittal August 12, 2013 City Eng. Comments on August 13, 2013 Page 2of 3 4.It is difficult to follow the storm sewer pipe information on the grading and drainage plan because of all of the bold line types. Please adjustplans to make more readable and place flow direction arrows on storm sewer pipes. 5.The lowest floor building elevation shall be above the 100-year high water elevation and at least one foot above a designated emergency overflow. With the parking lot higher than the building it is important to show how overflow water will drain around the building and that one foot of separation is met between the building elevation and overflow. Provide more detail. 6.Sumps or similar pre-treatment must be provided upstreamof permanent infiltration volume control BMP’s…such as 3-foot sumps at all drainage structure just upstream of BMP. 7.A maintenance agreement will be required and stipulated in the Developer Agreement. Grading 1.Site grading should normally not have grading steeper than 3:1. If slopes do not meet this then they must have an erosion stabilization blanket placed immediately after disturbance. 2.Retaining walls on plans must shown top and bottom elevations and retaining walls over 4-feet require submittal to the City of Maplewood building department to secure the required building permit. Show a typical detail of the retaining wall on the plans. Erosion & Sediment Control Plan 1.Include a maintenance schedule of all erosion and sediment control devices used throughout the phases of construction (including building construction). 2.Identify locations for equipment/material storage, debris stockpiles, vehicle/equipment maintenance, fueling, and washing areas. Address measure to contain area and specify that all materials stored on site shall have proper enclosures and/or coverings. 3.Identify locations and provide details for concrete washouts. Sanitary Sewer 1.More clearly identify sanitary sewer service connection location serving the new building. Identify pipe size, location, and slope. Agency Submittals 1.Ramsey-Washington Metro Watershed District. Attachment 10 3M Revised Submittal August 12, 2013 City Eng. Comments on August 13, 2013 Page 3of 3 2.Saint Paul Regional Water Services 3.Ramsey County 3.Minnesota Department of Health Services (Water Extension) 4.MPCA(Sewer Permit & Stormwater Permit) 5.Minnesota Department of Labor and Industry 6.Met Council (SAC Determination) 7.Other as required. Traffic 1.Submit the full traffic impact study and assumptions assuming the proposed ¾ Conway Avenue access. 2.The proposed ¾ driveway access on Conway Avenue creates some problems with the existing right-in/right-out driveway access on the south side of Conway Avenue from the proposed new access. Westbound vehicles on Conway will easily be able to make a left turn into the existing driveway based on the median opening for the proposed driveway. Please provide or explore some alternatives to address this concern. Miscellaneous 1.The owner and project engineer shall satisfy the requirements of all permitting agencies. 2.The owner shall signa maintenance agreement, prepared by the city, for all stormwater treatment devices (list devices i.e.…sumps, underground chambers, basins, ponds, etc…). The city shall prepare this agreement. 3.The developer shall enter into a development agreement with the city. The city will prepare this agreement. Attachment 11 Environmental Review Project: 3M –Research and Development Dateof Plans: February 25, April 1, July 26,August 9, 2013 Date of Review: August 21,2013 Location: Northeast Corner of Conway Avenue and McKnight Road Reviewers: Shann Finwall, Environmental Planner (651) 249-2304; shann.finwall@ci.maplewood.mn.us Background: 3M is proposing to develop a five-story Research and Development facilityon the northeast corner of ConwayAvenue and McKnight Road, within the 3M campus. The site isbordered on the north by R Avenue and 3M Lake across the street which is classified as a Class I Water in the City’s shoreland ordinance and a Manage A wetland in the City’s wetland ordinance. 1.Tree Preservation Ordinance: Maplewood’s tree preservation ordinance describes a significant tree as a hardwood tree with a minimum of 6 inches in diameter, an evergreen tree with a minimum of 8 inches in diameter, and a softwood tree with a minimum of 12 inches in diameter. Specimen trees are healthy trees of any species which are 28 inches in diameter or greater. The ordinance requires any significant tree removed be replaced based on a tree mitigation calculation. Tree Survey: The applicant’s tree survey dated February 25, 2013, shows several hundred significant trees located on the site. There are two specimen trees located on the northwest corner of the property on top of a hill (two 30-inch diameter oak trees). Tree Inventory: TheCity’s tree replacement formula requires the following information to determine the number of replacement trees required with a development: a) total diameter inches of significant trees situated on the property; and b) total diameter inches of significant trees lost due to development of the property. The applicant’s tree inventory dated July 26, 2013,only reflects trees within the “developed portion” of the lot, not the trees located on the northwestcorner that will be preserved.In order to calculate the tree replacement requirements, the City will need all trees on the site to be included on the tree schedule. Planting Schedule: The City’s tree replacement formula will determinethe number of replacement trees required with a development. Once wehave that information, the City reviewsthe planting schedule to determine if the site meets the replacement requirements.The applicant’s planting schedule dated April 1, 2013, gives the size and species of replacement trees, and the overall quantity of shade, ornamental, and evergreen trees,but it does not specify how many of 1 Attachment 11 each tree species.In order to determine if the site meets the tree replacement requirements, the City will need the number of each tree species being replaced on the site. TreePreservation Recommendations: The applicant must submit the following information in order to determine if the site meets the City’s tree preservation ordinance: a.Tree inventory which includes all significanttrees located on the site (not just the developed area) and the size and number of significant trees removed with the development. b.Planting schedule which shows the tree species, tree size, and numberof each species being replaced on the site. 2.Shoreland Ordinance: The entire siteis located within the Shoreland Overlay District of 3M Lake. 3M Lake is a Class I water. The City’s Shoreland Ordinance allows for a maximum of 50 percent impervious surface coverage for a lot located within this District, and up to 70 percent impervious surface coverage with bonuses.The city engineer shall determine whether bonuses are allowed based on the installation and maintenance of manmade facilities for reducing stormwater flow or the treatment of runoff for non-point-source water pollutants. Impervious Surface Area: The site is 17.5 acres in size. The development will include 10.5 acres of impervious surface coverage (61 percent) including the building, parking lot, and sidewalks. The development requires a 11percent impervious surface bonus.Michael Thompson, city engineer, states in his review of the development that the applicant must submit a summary of how they are meeting the City’s volume reduction requirementsin order to determine if the bonus will be allowed. Shoreland Recommendation: The applicant must submit a summary of how they are meeting the City’s volume reduction requirementsin order to qualify for the 11percent impervious surface area bonus. The bonus shall be approved by the city engineer based on the installation and maintenance of manmade facilities for reducing stormwater flow or the treatment of runoff for non-point- source water pollutants. 3.Wetland Ordinance: 3M Lake is classified as a Manage B wetland in the City’s wetland ordinance. The wetland ordinance requires a 75-foot buffer from a Manage B wetland. A site is exempt from this requirement if it is separated from the wetland by an existing road. The 3M site is separated from the wetland by one of 3M’s private roads, R Avenue. No grading is proposed on the north side of R Avenue, adjacent the wetland. Wetland Recommendation: The site is exempt from the City’s wetland ordinance requirements as it is separated from the Manage B wetland by an existing road and no grading is being proposed on thenorth side of the road, adjacent the wetland. 2