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HomeMy WebLinkAbout2010 04-15 PCP PLANNING COMMISSION AGENDA CITY OF BROOKLYN CENTER APRIL 15, 2010 REGULAR SESSION 1. Call to Order: 7:00 p.m. 2. Roll Call 3. Approval of Minutes - March 25, 2010 4. Chairperson's Explanation The Planning Commission is an advisory body. One of the Commission's functions is to hold public hearings. In the matters concerned in these hearings, the Commission makes recommendations to the City Council. The City Council makes all final decisions in these matters. 5. Welsh Construction, LLC 2010 -004 Preliminary Plat approval of Northwest Family Services Center Addition, the consolidation of two residential lots with the Lot 3, Block 1, Osseo Schools Willow Lane Addition and dedication of right of way for the realignment/improvements to 71 Avenue North. 6. Welsh Construction, LLC 2010 -006 Site and Building Plan Approval for a 63,362 sq. ft. building addition, two level parking garage and related site improvements to 71 Avenue and Willow Lane parking lot. 7. Other Business 8. Discussion Items 9. Adjournment Application Filed on 2 -18 -10 City Council Action Should Be Taken By 4 -19 -10 (60 Days) Planning Commission Information Sheet Application No. 2010 -004 Applicant: Welsh Construction. LLC Location: Southwest Quadrant of Brooklyn Boulevard and 71st Avenue North (7051 Brooklyn Boulevard) Request: Preliminary Plat of Northwest Family Services Center The applicant, Welsh Construction, LLC, on behalf of Osseo Area Schools (ISD 279) and CEAP (Community Emergency Assistance Program) are seeking preliminary plat approval to facilitate the consolidation of the two residential lots at 4813 70 Avenue and 4819 71" Avenue, recently acquired by CEAP, with the property addressed as 7051 Brooklyn Boulevard (Adult Education Building) into a single parcel comprising 169,877 sq. ft. and 3.9 acres in area. The platting of the property will provide for dedication of 5,493 sq. ft. of additional right of way to facilitate the planned intersection improvements to 7 V Avenue North, realignments to enhance the residential street entrance to the Perry neighborhood and access to the existing Willow Lane Early Childhood Learning Center. This 3.9 acre lot will include the Phase I improvements constructed for the Adult Education Building and the proposed Phase II improvements to be constructed for CEAP and the Hennepin County Human Services and Public Health Department. BACKGROUND INFORMATION On November 8, 2004, the City Council accepted the Planning Commission's recommendation and granted Preliminary Plat approval to the subdivision of Osseo Schools Willow Lane Addition, a subdivision which created a 3.63 acre lot for the phased development planned by the School District and CEAP and the reconfiguration of the Willow Lane Elementary School lot and the Willow Lane Park to facilitate a land exchange associated with the construction of a storm water management pond to serve the planned development with the following conditions: 1. The final plat is subject to review and approval by the City Engineer. 2. The final plat is subject to the provisions of Chapter 15 of the City Ordinances. 3. Appropriate cross access agreement allowing access from the Willow Lane Apartments to the proposed Lot 3 shall be developed and filed with the plat. 4. Appropriate drainage and utility easements as approved by the City Engineer shall be provided to protect public utilities and the retention pond. Said easement shall be 4 -15 -10 Page 1 i filed with the final plat. 5. Existing, but no longer necessary, easements shall be vacated by the City prior to release of the final plat. 6. The location of access to the proposed Lot 3 is subject to final approval and permit by Hennepin County. On November 8, 2004, the City Council adopted Resolution No. 2004 -153. On April 12, 2010, the City Council accepted the Planning Commission's recommendation on a PUD General Development Plan and the rezoning of the Lot 2, Block 1, Osseo Willow Lane Addition and the adjoining two residential lots (included in the proposed plat of Northwest Family Service Center) from R -1 to PUD/R -1 and the rezoning of Lot 3, Block 1, Osseo Willow Lane Addition from Cl to PUD /C1 with the following conditions: 1. Execution of a PUD development agreement as prepared by the City Attorney. 2. Completion of the Replatting of the Northwest Family Services Center Addition. 3. Approval of a final site plan by the Planning Commission and City Council. 4. Hennepin County approval of the improvements to the 71 Avenue /Brooklyn Boulevard signalized intersection. 5. City approval of a street improvement project to 71" Avenue. EASEMENTS The replatting of these three lots includes the vacation of the following public easements: - A drainage and utility easement previously dedicated along the east lot line of Lot 1, Block 1, Center Brook Addition. - A portion of a 20' drainage and utility easement within the parking lot and entry drive used for the storm water discharge line, which is planned to be relocated along the eastern lot line adjoining the Willow Lane Apartment lot. The plat also includes the dedication of the following new easements and right of way: - The dedication of 5,493 sq. ft. of additional right of way for 71 Avenue North. - The dedication of a 15' drainage and utility easement for the relocation of the storm water discharge line. - The plat provides for the dedication of standard drainage and utility easements on all perimeter lot lines (10 foot along public right of ways and 5 foot along side and rear lot lines). As part of the PUD approval, an easement in lieu of this standard will be provided to avoid encroachment by the parking structure and building, where a zero foot interior setback is proposed from the common lot line between the Early Childhood and Family 4 -15 -10 Page 2 Education lot and the Northwest Family Services Center lot. Additional easement locations for the utilities, consistent with the approved site, building, and utility plans, will be coordinated with the City's Public Works Department and placed on the final plat. Also, shared access and parking easements, though shown on the final plat, will be recorded for the benefit of the ISD # 279, CEAP, Inc. and other parties that may be included in the declaration of covenants and restrictions of the PUD agreement. These easements will also become part of a condominium agreement which will provide ownership and operational guide for the Northwest Family Service Center, its parking structure and grounds. Utilities: Municipal water and building fire protection is provided from the 71 Ave. water lateral which is extended within the Brooklyn Boulevard front yard. A separate connection from this same line is extended to serve a hydrant on the west side of the building. The sanitary sewer service for phase I is proposed to be relocated to a new sewer connection and extended southerly within the 71" Ave. access drive to serve both Phase I & II. Storm Water Management: The initial subdivision of this property provided drainage easements for the construction of a storm water detention pond with a controlled outlet elevations that were constructed as part of the phase I improvements. The applicant has provided a provided a storm water management report & calculations for the Phase II improvements, which has been attached for your reference. The report indicates that the existing pond will manage the flows calculated for this development by the relocation of the existing outlet control structure. Access Improvements: Access improvements that are being reviewed by the Engineering Department and Hennepin County include: A modification to the Brooklyn Boulevard entrance that would allow full traffic movement to enter the site; but limit traffic leaving at this location to a right turn movement (south bound). These improvements will improve safety for the traveling public on Brooklyn Boulevard and employees and users of these facilities. Note: These changes do not affect the southern access point of the apartments. Major modifications to the 71 Avenue street alignment, signalized intersection, which includes a left turn lane for northbound travel onto Brooklyn Boulevard, are being reviewed by the Hennepin County Transportation Department and the City's Engineering 4 -15 -10 Page 3 Department. Additionally the street improvements will focus on an entry to the Northwest Family Services and the Willow Lane Early Childhood Family Education Center sites and an entrance that identifies this as a residential neighborhood and discourages through traffic movement. Attached for your reference are reports provided by SRF Consulting Group, Inc. which address the preliminary design and cost estimates of these improvements and the traffic study that was previously referenced at the public hearing on the PUD rezoning application. The Public Works' Director /City Engineer is reviewing the preliminary plat and will be offering written comments, which will be attached for the Commission's review. CONTINUATION OF THE MARCH 25.2010 PUBLIC HEARING This is a continuation of the Planning Commission's public hearing on the Preliminary Plat of Northwest Family Service Center that was scheduled and officially noticed for the March 25, 2010 Planning Commission Meeting. Following the staff report, I would recommend that we proceed with a motion to reopen the public hearing, and upon accepting additional public testimony, a motion to close the public hearing would be in order. RECOMMENDATION This preliminary plat may be in order pending submission of the additional information relating to Willow Lane Park. Approval of the preliminary plat should be subject to at least the following conditions: 1. The final plat is subject to review and approval by the City Engineer. 2. The final plat is subject to the provisions of Chapter 15 of the City Ordinances. 3. Appropriate cross access agreement allowing access from the Willow Lane Early Childhood and Family Education Center, the Northwest Family Service Center, and the Willow Lane Apartments to the proposed Lot 3 shall be developed and filed with the plat. 4. The necessary drainage and utility easements within this Plat and the PUD Master Plan, as approved by the City Engineer, shall be dedicated and filed with the final plat. 5. Existing, but no longer necessary, easements shall be vacated by the City prior to release of the final plat. 4 -15 -10 Page 4 6. Approval of the access improvements to the entrance onto Brooklyn Boulevard and the 71 Avenue signalized intersection by Hennepin County. 7. Approval of the 71" Avenue street realignment project by the City of Brooklyn Center. 4 -15 -10 Page 5 PRELIMINARY PLAT OF NORTHWEST FAMILY SERVICES CENTER ADDITION FOR CEAP, INC. & INDEPENDENT SCHOOL DISTRICT NO. 279 71ST AVENNS N Na r �, T sir qq Vileq 7 \ ° .xx. Ao a , l 1 i I _ ._ _s�easnss w usv �( --�rx rr i j�j Cr *af �`n ss" t Imo@ ge :yn�ry� �I� `t ��33t r��>� n� u �'� , •t� - s' i4r �' e t � x ',Z - y��,. o � �^S.w,,,a^ -ar m. i t 1-RN 1 ' .. a.. .Jv. -... ...... ""531"+ .. �nr$eI`mu �w vn. J 1. .. �• �. ..:.rl. a 5 � ur �T s .. .. ...ter.,... ' I BOUNDARY AND TOPOGRAPHY SURVEY FOR ATS&R I t MB It v. ... fii�y k � d.. � � �SI . I \ � -, \j 1 1 � � � \ \ \• O o.n. ,..+......... •d ot., �� }�' 'n� lal °�""- �I 4 ' - •fie" \ __ - -: r. x b� I r � \ •IH .N � O roves 1 .7 _ ._ .... - ----- I I I .,.., M,,. ....•.�' .. . ,,., _. ,........ _ ... • it PRELIMINARY STORM WATER MANAGEMENT REPORT & CALCULATIONS Northwest Family Services Center Phase H Facility Brooklyn Center, MN VAA Job No. 10028 February 11th, 2010 VAA, LLC. 2955 Xenium Lane North, Suite 10 Plymouth, MN 55441 Table of Contents Summary Storm Water Summary and Hydrograph Tables Appendix A Rainfall Analysis Maps, State of Minnesota Appendix B Site Map and Existing and Proposed Drainage Area Analysis Maps Appendix C HYDROCAD Calculations Appendix D Soil Boring Logs and Log Location Map Storm Water Summary and Hydrograph Tables Design Standards — Northwest Family Services Center Phase II Facility has been evaluated to meet or exceed the Minnesota Pollution Control Agency (MPCA), National Pollution Discharge Elimination System (NPDES), and Best Management Practices (BMPs). Existing Site Description -The existing site consists of an existing building, parking lot and its associated driveways, sidewalks and paths. The site improvements are scheduled to begin in early May, 2010, with the site improvements scheduled to be completed in early November, 2010. Existing Terrain Description -See below and Appendix B: The majority of the site drains to the existing pond located to the south of the existing parking lot. A small portion of the site drains directly off site to 71 Ave N and Brooklyn Blvd. The existing pond also takes runoff from areas located off the site. Existing Drainage Pattern -See Below and Appendix B: Sub - drainage area 1X consists of drainage from areas on -site that drain to the existing pond to the south of the site. It consists of the majority of the existing on -site impervious surfaces, with a smaller portion of the area being existing turf areas. Sub - drainage area 2X consists of off -site areas that drain into the existing pond to the south of the site. The majority of this area is an existing park, consisting of turf area open spaces. A smaller portion of this area is existing impervious surfaces consisting of some athletic courts, paths, and buildings. Sub - drainage area 3X consists of areas on -site that drain off site. The majority of this area is turf areas, with a smaller portion consisting of existing impervious surfaces including bituminous roadways and concrete sidewalks. Proposed Site Description -The proposed site will consist of a new addition to the existing building, and a two story parking ramp structure. The effect on overall impervious from the parking ramp structure will be negligible, as it is being constructed on top of an existing bituminous parking lot, and drainage from the above grade levels of the parking structure will.be discharged to the sanitary sewer. Due to the site improvements, there will be an increase in impervious surfaces on the site. The HydroCAD model for the site has shown that the increase in impervious surfaces are low enough that the existing pond will manage the flows by relocating the existing outlet control structure. Proposed Terrain Description- See below and Appendix B: The proposed terrain will drain in generally the same patterns as the existing conditions. The amount of area draining off site will be reduced as part of the proposed improvements, and more runoff will be directed into the existing pond. The proposed finished floor of the building addition will match the finished floor of the existing building. Drainage from the above grade levels of the parking ramp structure will be directed to the sanitary sewer. Proposed Drainage Patterns -See below and Appendix B: Sub - drainage Area 1 S consists of drainage from areas on -site that drain to the existing pond to the south of the site. It consists of the majority of the existing on -site impervious surfaces, and the proposed building addition. A smaller portion of this area is turf areas. Sub - drainage Area 2S consists of off -site areas that drain to the existing pond south of the site. The majority of this area is an existing park, consisting of turf area open spaces. A smaller portion of this area is existing impervious surfaces consisting of some athletic courts, paths, and buildings. Also, a small portion of new off -site impervious surfaces will drain to the pond, specifically from the driveway connections from the proposed driveway to the west of the site. Sub - drainage area 3S consists of on -site areas that drain off -site. The majority of this area is turf areas, with a smaller portion consisting of existing impervious surfaces including bituminous roadways and concrete sidewalks. The following tables summarize the data that is revealed in the 2 -year, 10 -year, and 100 -year runoff conditions. The curve numbers (CN) for the existing and proposed site range from 74 to 98. For an exact breakdown, see the following HYDROCAD analysis. Hydrograph Computation Summary Table for Northwest Family Services Center Phase II Facility Pre - Redevelopment Site Analysis 2 year Runoff 10 Year Runoff 100 Year Summary Ru noff Total Runoff (cfs) 1.57 T1.60 19.67 , Post - Redevelopment Site Analysis 2 Year Runoff 10 Year Runoff 100 Year Summary Runo Total Runoff (cfs) 1.07 6 .38 S DEPARTMENT Or AGRICULTURE MINNESOTA SOIL CONSERVATION SERVICE T 2F 95' 9r 9r 91' + + + + + + + + 2 --YEAR 24 -HOUR RAINFALUINCHES) r 1 � _ 1 2.2 2.4 1 !, - 2.6 LF !- + s 2.7 - 1 G{• I �LVTIV+.00. p .1U..'M Mll[ WM {[f[l[ 1 p'IOCt prim L i FMIN r ±L I 2 . 9 I '4r SOURCE: USWB TP 40 9' 9T 9 91' 9P �tD ll[... 1 { {{ 1 -4 FIGURE 1 -3 S•L-a0981 i I C.S DERA ATM EST OF AG AlCCLTCRE MINNESOTA BOIL CO XNERVATIOr OLRVICz r yr sr yr vt• � + 10 -YEAR 24 -HOUR RAINFALL (INCHES) r 3.3 i �z 3.4 r + + + W 3.5 + + �- 4.0 _ r S + Irt 1 . ' f s. + + 4 r4.3, , >> 44 , -- --- 1- - - - - - -L -- _j - _ S " + + + ' + + + SOURCE: USWB TP 40 .....,... ,... 1 -6 FIGURE 1 - 5 i•L .o9e, C . s ccr�arrc.r or wGX)CCVrCKE MINNESOTA WILCONSERV.TION SEA,-x. r n• r er *V + + + + + + + - 100 —YEAR 24 —HOUR RAINFALLONCHES) r 4.8 - a _ + + + + + 4.9 5.0 t �-� �; �•� 5.2 �U ' 54 5.5 _ r - � - ... 1 � 5.7 1 X r - --- - - -' -�- ' _�_Tq• L 62 I I I L SOURCE: USWB * TP 40 1 -9 FIGURE 1 -8 3 L .A091 Appendix B: Site Map and Existing and Proposed Drainage Area Analysis Maps y g yr _ < r I M 1 1, 1` .. 1 •• - -� it 1 11 r I CN _ c•I� 1 1�, - � • a`IYr 1 .t nl ? 1 X 1 I N at?; 0 1. , i rr r - ♦...r::' rrrr r -r .a_ .•. Dial. - ' I, i x; . q ,.,�♦ `\ :.RF 1 .......... • ..... ... ..............................1 N - - - -- p 1111 t " _--- -------- _ - -- __..... _ V r ♦ t, 1 �x ............ _..- ... -.._ .. :. -..- r ... ... - ® CONSULTING GROUP, INC. MINNEAPOLIS E N G I N E E R S I P LANNE R S FARGO I D E S I G N E R S MADISON CEAP Development SRF No. 0096820 Preliminary Design Summary February 8, 2010 INTRODUCTION As requested, a preliminary design concept layout of the improvements requested by the City of Brooklyn Center has been developed with respect to the proposed CEAP site expansion. The improvements address current safety issues and improve access to and from the site. The following improvements were included in the preliminary design concept layout: • Modification of the existing CEAP Site access along Brooklyn Boulevard to three - quarter access (right- in/right -out and left -in). • Reconstruction of the west approach to the 71st Avenue/Brooklyn Boulevard intersection to include an eastbound left -turn lane. Identify additional impacts associated with this improvement (i.e., signal reconstruction, sidewalks, etc.). • Reconstruct 71st Avenue to realign it directly into the CEAP Site. The neighborhood connection of 71st Avenue from the west will create a T- intersection with the newly aligned CEAP Site roadway and become the minor roadway. Identify additional impacts associated with this improvement (i.e., sidewalks, parking and building setbacks, etc.). Cost estimates were created for the entire project, including a breakdown of individual segments for future planning discussions. PRELIMINARY DESIGN The preliminary design concept layout detailing the proposed improvements is shown in Figure 1. The following comments identify potential impacts: • The building setback required is 35 feet from the right -of -way. Based on the proposed design, the building does not conflict with this requirement. • The parking setback required is 15 feet from the right -of -way. Based on the proposed K. esign, the north service parking lot encroaches on the setback by approximately two et. o Modification of the site plan or a request for a variance could be considered. • Expansion of 71st Avenue will require the two signal poles on the west side of Brooklyn Boulevard be relocated. A new signal pole and mast arm on the east side will also be required to meet design requirements. • • Driveways for the 2nd and 3rd houses from Brooklyn Boulevard (North of 71st Avenue) will need to be reconstructed to connect to the realigned 71st Avenue. • The preliminary design concept layout was designed to accommodate heavy vehicles up to WB -50 type vehicles. www.srfconsulting.com One Carlson Parkway North, Suite 150 1 Minneapolis, MN 55447 -4443 1 763.475.0010 Fax: 763.475.2429 An Equal Opportunity Employer Mike Schraad February 8, 2010 Welsh Construction, LLC page 2 COST ESTIMATE The cost estimate for the preliminary design concept layout is shown in Table 1. A breakdown of the cost estimate is provided to assist with planning discussions. • The total cost of the preliminary design concept layout is estimated to be approximately $257,000. • A 20 percent contingency was included in the cost estimate. • The estimate does not include costs for potential underground utility (sanitary sewer /watermain) improvements. • The portion of the preliminary design concept layout that can be identified as mainly site access is estimated to cost approximately $44,000 (does not include 20 percent contingency). • This includes the south and east approaches of the realigned intersection at 71st Avenue. The east approach is the CEAP access extending into the service dock area. • This also includes the modification at the existing CEAP site access to Brooklyn Boulevard. • The portion of the preliminary design concept layout that can be identified as a city street improvement is estimated to cost approximately $170,000 (does not include 20 percent contingency). H: \Projects\ MeporA ]00208_Final_CEAPPreliminary Design_TS.doc y y � w '. xkEi �4 -3* " 0 50 100 - f, $cal. In feet RELOCATE SIGNAL POLE FOUNDATION° 41 PROPOSED SIDEWALK OFFSET 3' FROM EXISTING SIDEWALK 37. 5' R `� REVISE SIGNAL TO MEET REQUIREMENTS zo.o R ti 6 ' j s � RELOCATE SIGNAL 30 o R POLE FOUNDATION 15' PARKING SETBACK` •• _ 15.0'R � 30 s IF 35' BUILDING SETB CK .. 20.0' R - " Tly 3 ix 20. 0'R g ink j ce) rn �i WD 40.0' R N �r CL 1� Q cli m NOTE: EXISTING SCHOOL ACCESS ALONG a jPERRY AVENUE TO BE CLOSED r ® Proposed Roadway Improvements Figure 1 c ,,, G—p Proposed Roadway City of Brooklyn Center Job #6820 21612010 PROPOSED ROADWAY IMPROVEMENTS 2/6/2010 PRELIMINARY COST ESTIMATE TABLE 1 ITEM UNIT UNIT COST QUANTITY TOTAL Proposed Improvements - 71 st Avenue 1 Mobilization LS $5,000.00 1 $5,000.00 2 Remove Bituminous Pavement SY $6.00 1000 $6,000.00 3 Remove Curb and Gutter LF $4.50 660 $2,970.00 4 Remove Concrete Sidewalk SF $2.50 1600 $4,000.00 5 Remove Concrete Driveway Pavement SY $10.00 60 $600.00 6 Common Excavation CY $15.00 230 $3,450.00 7 Bituminous Pavement TON $70.00 330 $23,100.00 8 Aggregate Base Class 5 CY $30.00 240 $7,200.00 9 4" Concrete Walk SF $4.00 3000 $12,000.00 10 B618 Curb and Gutter LF $11.00 710 $7,810.00 11 Signal System Revision LS $75,000.00 1 $75,000.00 12 Storm Sewer System LS $7,500.00 1 $7,500.00 13 Signing & Pavement Markings LS $7,500.00 1 $7,500.00 14 Erosion Control and Turf Establishment LS $5,000.00 1 $5,000.00 15 Traffic Control LS $2,500.00 1 $2,500.00 Subtotal $169,630.00 Proposed Improvements - Internal 1 Mobilization LS $5,000.00 1 $5,000.00 2 Bituminous Pavement TON $70.00 180 $12,600.00 3 Aggregate Base Class 5 CY $30.00 130 $3,900.00 4 4" Concrete Walk SF $4.00 325 $1,300.00 5 B618 Curb and Gutter LF $11.00 580 $6,380.00 6 Storm Sewer System LS $7,500.00 1 $7,500.00 7 Signing & Pavement Markings LS $200.00 1 $200.00 8 Erosion Control and Turf Establishment LS $5,000.00 1 $5,000.00 9 Traffic Control LS $2,500.00 1 $2,500.00 Subtotal $44,380.00 Proposed Improvement Total $214,010.00 Contingency @ 20 % $42,802.00 Grand Total $256,812.00 Rounded Total $256,800.00 NOTE: ESTIMATE DOES NOT INCLUDE UNDERGROUND UTILITY (SANITARY SEWER / WATERMAIN) IMPROVEMENTS CONSULTING GROUP, INC. MINNfApous E N G I N E E R S I P L A N N E R S FARGU i D E 5 1 G N E R 5 MA1)1SON SRF No. 0096820 MEMORANDUM TO: Mike Schraad, Vice President Welsh Construction, LLC FROM: Craig Vaughn, P.E., P.T.O.E., Senior Associate Matthew Pacyna, P.E., Senior Engineer DATE: February 8, 2010 SUBJECT: CEAP SI TRAFFIC S TUDY BROOKLYN CENTER, MN INTRODUCTION As requested, we have completed a traffic study for the proposed CEAP site expansion located in the southwest quadrant of Brooklyn Boulevard and 71st Avenue North/Noble Avenue North in the City of Brooklyn Center (see Figure 1: Project Location). The purpose of this study is to determine the traffic impacts on the adjacent roadway network related to the proposed expansion and recommend improvements to provide acceptable intersection operations, if necessary. This study includes an operations analysis during the a.m. and p.m. peak hours of the roadway network for existing and future no build and build conditions. Two future site access scenarios were reviewed under build conditions. EXISTING CONDITfONS' _ w.,. -► �. +- Traffic operations were analyzed at the following key intersections: • Brooklyn Boulevard and 69th Avenue North • Brooklyn Boulevard and the CEAP Site Access • Brooklyn Boulevard and 71st Avenue North/Noble Avenue North Current traffic controls include signalization at the key intersections along Brooklyn Soulevida at 69th Avenue North and 71st Avenue North. The existing CEAP site access along Brooklyn Boulevard (located approximately 400 feet south of 71st Avenue North) is unsignalized, with side -street stop control. This access aligns with another private development access located on the east side of Brooklyn Boulevard creating a four - legged intersection. It should be noted that the existing CEAP site access also provides cross - access for the apartment complex located immediately south of the existing CEAP site. www.srfconsulting. cam One Carlson Parkway North, Suite '150 1 Minneapolis, MN 55447 -4443 763.475.0010 Fax: 763.475.2429 An Egan! Opportunity Employer ♦ ANN LN 0 S� 0 -- 73rd AVE. N WOO BINE LN ui -- Q 72nd Q Q Q x LU w - Ui Z _ P`t E. I lis 71st AVE. w uj Project Location Q a 0 u i 'Ly U w } ��L Z a �'I O 70th AVE. U- a. ui Q O Q 6 th AVE. N. 2 J 09th AVE. N. uj ui uj Q Q z w Q � � w 130 152 2 N W i y� 0 CD th AVE O Z o- C O O J U d O a` i u- 67th. AVE 94 L7t E. o a - f/1 d J O1 O m N U m a 66th AV Project Location Figure 1 CEAP Site Traffic Study co- wA.nwc CUM?, Lk City of Brooklyn Center 0096820 June 2009 Mike Schraad February 8, 2010 Welsh Construction, LLC Page 3 Vehicular turning movement counts were collected on May 20th, 2009 at each of the key intersections during the a.m. and p.m. peak hour. Existing geometrics, traffic controls and peak hour traffic volumes for the key intersections are shown in Figure 2. An operations analysis was conducted for the a.m. and p.m. peak hours at each of the key intersections to determine how traffic currently operates in the study area. All signalized intersections were analyzed using the Synchro /SimTraffic software (version 7). The unsignalized intersection was analyzed using a combination of the Highway Capacity Software (HCS) and Synchro /SimTraffic software. It should be noted that where side -street stop controlled intersections are in close proximity to signalized intersections, such as the CEAP site access, Synchro /SimTraffic software typically provides a more accurate result of operations at these side -street stop controlled intersections. This is due to the consideration of signal timing impacts from adjacent signalized intersections on the side -street approaches. Capacity analysis results identify a Level of Service (LOS), which indicates how well an intersection is operating. The LOS results are based on average delay per vehicle. Intersections are given a ranking from LOS A through LOS F. LOS A indicates the best traffic operation and LOS F indicates an intersection where demand exceeds capacity. In the Twin Cities metropolitan area, LOS A through D is generally considered acceptable by drivers. For side -street stop controlled intersections, special emphasis is given to providing an estimate for the level of service of the minor approach. Traffic operations at unsignalized intersections with side -street stop control can be described in two ways. First, consideration is given to the overall intersection level of service. This takes into account the total number of vehicles entering the intersection and the capability of the intersection to support those volumes. Second, it is important to consider the delay on the minor approach. Since the mainline does not have to stop, the majority of delay is attributed to the side -street approaches in most cases. Results of the existing operations analysis shown in Table 1 indicate that all key intersections currently operate at an overall acceptable LOS D or better during the a.m. and p.m. peak hours, with existing traffic control and geometric layout. It should be noted that the intersection of Brooklyn Boulevard and 69th Avenue North currently operates near /at capacity during the a.m. and p.m. peak hours with average delays of approximately 55 seconds per vehicle. Existing signal timing obtained from Hennepin County was used in the analysis. To better quantify the delays at the CEAP site access, Table 1 presents the critical movement delays for vehicles entering or exiting the site. More specifically, the exiting left- and right -turns and the entering northbound left -turn. Results of the analysis indicate the exiting left -turn delay during the p.m. peak hour is approximately two minutes per vehicle. All other delays for movements associated with the CEAP site access are considered to be acceptable. 75th AV. Z ��� > > Q Qi L w O � Q ANN N. M ° r 57 (42) I 15 (11) �� N i 517 (222) O Noble Ave. N ? f O POND WOODBINE LN. (10)17 w w (8) 7 v – > > Q LJ �n > W W W 72 m` w J >- Y nd c'R m �p O G� W I GP z 71 St AJ 71 st AVE. 71 v N v LL1 m 0 (3) > CEAP Site Access 0 (5) LY ( 1 w 7pthCI (0)o j, i I L (9) 3 N 70 th AVE. E m m o � AVE U i w LLi U 2 v 9 m F W w x O J Y � a 69 AVE. N. � N N "r X Uj LLI ° L 108 (265) Ln Ni Q ; Q c^o I - II M �— 114 (188) .0 Q Q �ii`► 374(259) �i 69th Ave. N LEGEND _- (113) 57 t l TT1(� (147) 70 —► z o o M XX - A.M. Peak Hour Volume 68th A (,s7) 220 m 68th AVE. N. li- (XX) P.M. Peak Hour Volume N M N - Signalized Control o N Q - Side - Street Stop Control _' Existing Peak Hour Traffic Volumes CEAP Site Traffic Study Figure 2 Co.x�i „nc Gvour, ir�- oossazo City of Brooklyn Center June 2009 Mike Schraad February 8, 2010 Welsh Construction, LLC Page 5 Table 1 Existing Peak Hour Capacity Analysis Level of Service Results Level of Service Intersection A.M. Peak P.M. Peak LOS Delay ct> LOS Delay c�> Brooklyn Boulevard and 69th Avenue North D 55 sec. D 55 sec. Brooklyn Boulevard and CEAP Site Access * A/D 25 sec. A/F 50 sec. Brooklyn Boulevard and 71st Avenue North C 30 sec. C 20 sec. CEAP Site Access — Exiting Left -Turn Movement -- 40 sec. -- 110 sec. CEAP Site Access — Exiting Right -Turn Movement -- 25 sec. -- 15 sec. CEAP Site Access — Entering NB Left -Turn Movement -- 20 sec. -- 10 sec. For signalized intersections, delays shown represent overall intersection delay. For unsignalized intersections, delays shown represent the worst side -street approach. * Indicates an unsignalized intersection with side -street stop control. The overall LOS is shown followed by the worst approach LOS. Based on field observation and SimTraffic analysis, the westbound left-turn movement at the intersection of Brooklyn Boulevard and 69th Avenue North consistently queues beyond its storage distance of 200 feet during the peak hours. This lengthy queue impacts the 69th Avenue North through movements. The queues extend beyond the storage bay approximately 45 percent of the time during the peak hours. Northbound vehicles along Brooklyn Boulevard at 69th Avenue North also experience queuing during the p.m. peak hour. The northbound left -turn lane experiences cycle failures, while the northbound through lanes occasionally spill back and impact operations at 68th Avenue North. The westbound approach at 71st Avenue North also has minor queuing issues during the a.m. peak hour that spill back into the adjacent neighborhood. The average and 95th percentile queues at this location are approximately 400 feet and 650 feet, respectively. Northbound queues along Brooklyn Boulevard at 71st Avenue North occasionally (approximately five percent) impact operations at the CEAP site access during the p.m. peak hour. This queue has a minor effect on vehicles exiting the CEAP site, causing additional delays. To address the queuing issues identified, optimization of the signal timing at the intersection of Brooklyn Boulevard and 69th Avenue North is recommended. Results of the operations analysis with optimized signal timing indicate that all existing queuing issues will be minimized and corridor travel times along Brooklyn Boulevard will remain relatively similar. Level of service operations for all intersections are not expected to change. It should be noted that the westbound left -turn movement delay and queue will be significantly reduced during the a.m. and p.m. peak hours. While queues and specific movement delays are improved with optimized timing, the intersection of Brooklyn Boulevard and 69th Avenue North will still be at capacity during the a.m. and p.m. peak hours. Mike Schraad February 8, 2010 Welsh Construction, LLC Page 6 PROPOSED DEVELOPMENT The proposed CEAP site expansion is located in the southwest quadrant of Brooklyn Boulevard and 71st Avenue North/Noble Avenue North. Construction of phase I of the CEAP site, consisting of approximately 25,635 square feet of office space, was recently completed in 2005. The proposed expansion of the CEAP site (Phase II) consists of an additional 59,679 square feet of office space, resulting in a total of 85,314 square feet of office space. Two site access scenarios are proposed for the site. Scenario 1 consists of the existing access condition. Scenario 2 consists of a combination of a slightly modified existing access (three - quarter access) and a realigned 71st Avenue North with shared access for the school located immediately west of the CEAP site. Site plans for Scenario 1 and Scenario 2 are shown in Figure 3 and Figure 4, respectively. TRAFFIC FORECASTS The proposed expansion will be completed in year 2010. Therefore, traffic forecasts were developed for year 2011 (one year after construction). Based on existing area growth patterns and historical average daily traffic (ADT) volumes, an annual growth rate of one and a half percent was applied to the existing peak hour volumes to develop year 2011 background traffic forecasts and are shown in Figure 5: Year 2011 No Build Conditions. Trip generation estimates for the proposed CEAP site expansion were calculated using the ITE Trip Generation Handbook, 8th Edition. In addition, a trip generation comparison was completed to determine how the proposed expansion differs from the previous expansion proposal. Table 2 shows the expected trip generation for the CEAP site expansion and the trip generation estimates for the previous expansion proposal. Based on this review, the trip generation for the proposed CEAP site expansion is approximately twice the amount of the previous proposed expansion. Impacts of the proposed CEAP site expansion will be addressed later in this memo Table 2 Trip Generation Estimates Size A.M. Trips P.M. Trips Land Use Type (ITE Code) (sq. ft.) In Out In Out Daily Trips Trips Trips Trips Proposed CEAP Site Expansion Office (7 10) 59,679 81 11 15 74 657 Previous CEAP Site Proposal Office (7 10) 23,505 1 32 1 4 6 1 29 1 259 * The trip generation for the previous CEAP site proposal was included for comparison purposes only. The directional trip distribution for the proposed expansion is based on existing travel patterns and regional daily traffic volumes (see Figure 6: Directional Distribution). It should be noted that since the land use of the proposed expansion is all office, no multi -use reductions were applied to the trip generation estimates. In order to be conservative, no additional multi -modal reductions were applied for transit or travel demand management. The combination of background traffic and trips generated by the proposed expansion for year 2011 build conditions are shown in Figure 7 and Figure 8, respectively. r) H :Projects \6820 \TS\Figures\Corel Figures \Final Figures \Updated \Fig 3_Proposed Site Plan- Scenario 1.cdr o O Y N m N W Q O l � North Y z f Z D O o c O 7 C I °- CD N 11 -� Q _ 0 N 60/ Ll� `° � 1'aMi Cj - - :�)QNV UZ 65t O-L I.J 4hJA MW N ld %N N cld3 _ _- I r CD 0 LI I I l I I q ` w a 1 LiL < 061 + lb• ''dam lb LS'o4� _ Vilt `Ica x G000 - �55�'�Z Qbi Aso x Soap - ?I,- =154) 6 11 1 18 'Tt11Q�'j C CD W H:Projects\6820XTSkFigures\CoraI Figureffinal Figures\Updated\Fig 4_Proposed Site Plan-Scenario 2,cdr c 0 CO rJ 0 0 to 600Z'Zo t ------- -- -7 --- 0 6 2! C7, "'t ... CIO Cn 0 U) (D cD 314 CL Cn 0 =—:4 DLO CD -J h I I e Qi) 0 S °m K3 W �z � Of ()qL dLLIU)i '%RU - 1, 7iLji "0 ""1 im Is! .. .. ... ... .... . . . .... t '0 'OUI 43178SLV 78 UOIIDIIASUOZ) 4S F)Ak wa 6LZ# (ISI - sloopS U31V OOSSO /Alk 1ijua7 aopuaS qnH N ICJ uno,) uidaulual-I /,IVgD 4h- �/Irjp w w 75th AV. 0 > > Z ���9 Q Q O i w J Q ANN N. o � o 5� 17 0 0 60 (45) 0. CN 15 (15) i 535 (230) O Noble Ave. N ?tai WOODBINE LN. QO D (10) 10 I I I 2 w w > (20) 20+ z n o o > Q Q (10) 10 LJ LL/ CS GQ > W W Z w Y 2nd CSR m m Oz 2� W I < \ 1 * N ° v 71 st P 71 St AVE. 71St CIR ^ tn 0 ( 0 (0) 0 (5) CEAP Site Access (10) 5 (0) 0 z " o C co 7pthG� (10) 5 -' a, � 70 th AVE. j N N E ui LLi w m Q > Q Q w w O 69 AVE. N. �Lo o O LO z � w w n o '� 115 (275) LO Q >Q >Q ° !9 ° 120 (195) — 385(270) LL I 0 69th Ave. N LEGEND Q (120) so I I 1 �► XX - A.M. Peak Hour Volume ( 75 � _ - o 0 68th 68th A (205) 235 ° " " AVE. N. (XX) - P.M. Peak Hour Volume m o o s - Signalized Control Y C (0 M , Q - Side - Street Stop Control _ Year 2011 No Build Conditions CEAP Site Traffic Study Figure 5 Covsuu�isc Cvour, Inc. City of Brooklyn Center 0096820 June 2009 ui w 75th AV. Q o > � z Wi LU OI -� Q ANN N. / 10% 20% WOODBINE LN. w w � Q QI w ¢ w w Q w j J J O O O,f. z ED W1 71 st A 71 st AVE. w Q Project Site w w 70 th AVE. 0th AVE, ui Q Q Q W W O J o 69 AVE. N. 10% 2 w 15% - 0 j ui 111 Q j 130 O Q H W W Q = m o O U O 1- � CC 68th A E. N. OI Z 68th AV N. 45% 'o N Vl co U CD O d = i Directional Distribution Figure 6 CEAP Site Traffic Study CoHwin+.c Cuour, IKC. City of Brooklyn Center 0096820 June 2009 w > 75th AV. o �Qj i Q Q Z '9� O J Q ANN N. 0 Lo N o 30 (45) I `'' �— 15 (15) p 545 (235) pND Noble Ave. N ?f �� WOODBINE LN. W w P (10) 10 1I� j > Q (20) 20 z in N o Q Q (10) 10 N "w W w ' Ljj IT U') W '� Y �2nq C /R PLO ZZ G \\� I G W ^ 71 st PJ� 71st AVE. 1st C/R rni 0 (5) 0 ( CEAP Site Access h (30) 5 It� (0) 0 z o o Un 7QthC� (65) 15 m o ° 70 th AVE. C ] s � E w w N m > Q Q Q w z 9 O J �I m I 69 AVE. N. o W W v v t 125 (275) ri Q ? Q o Ln _ ° o 4_ 120 (195) 385(270) LL LL J LL LEGEND Q 69th Ave.N (120) 70� 4- ttt r ► XX - A.M. Peak Hour Volume 68th A (155) 75 —i Z o o ° 68th (XX) - P.M. Peak Hour Volume (205) 235 > ^ � ^ AVE. N. w O O O - Signalized Control ° M Q - Side - Street Stop Control i Year 2011 Build Conditions - Scenario 1 Figure 7 CEAP Site Traffic Study co —L u. c G.—,, l ". City of Brooklyn Center 0096820 June 2009 w 75th AV. L > I o Z Ln o `OR Ln W N N o * 60 (45) O J 20 (15) 540 (230) Noble Ave. N �• (35) 10 (30) 20 - ;_ (10) 10 �� ANN N. m a G3 Q. �M� _ 5 0 o -- m 0 WOODBINE LN. uj w 5 (5) > uj > Q 0(0) \ lL W a W e (o) > W w 2 71 St Ave. Q W J } (10) 15 W Y (0) 0 O N O v m O u I (0) O a o Ln o FL Z a ! 2 N WI U � C 71 st A 71st AVE. 71 St CIR ui Q s Of w N a- 70thG v L v o (5) 70 th AVE. d `" ° 0 ( 0 ) ���► 0(5) w CEAP Site Access > Q Q c Q 0 C (65) 15 � I I� W Z ZCOC� 0 \ �I v_ > w -� fD c N Y O N. N N LL] CO r j U j W o L 125 (275) w Q Q Q I °° �— 120 (195) 385 (270) LL 0 Q 69th Ave. N LEGEND (120) 70 d (155) 75 —� � Ln ) XX - A. M. Peak Hour Volume Z n �, 0 68 AVE. N. 68th A o o � 8t (XX) - P.M. Peak Hour Volume (zo5) z35 to o 0 0 y - Signalized Control Q - Side - Street Stop Control Year 2011 Build Conditions - Scenario 2 Figure 8 CEAP Site Traffic Study Co —L nac G +uur, L:v. City of Brooklyn Center 0096820 June 2009 Mike Schraad February 8, 2010 Welsh Construction, LLC Page 13 YEAR 2011 NO BUILD CONDITIONS Before determining the impacts of the proposed expansion on the existing roadway network, the no build condition was analyzed to determine how the roadway network would operate in year 2011 if the expansion did not occur. This scenario includes the traffic signal optimization at the intersection of 69th Avenue North recommended as part of the existing conditions analysis. Results of the year 2011 no build analysis shown in Table 3 indicate that two out of three key intersections are expected to operate at an overall acceptable intersection LOS D or better under year 2011 no build conditions during the a.m. and p.m. peak hours, with existing traffic control, geometric layout and optimized signal timing at the intersection of Brooklyn Boulevard and 69th Avenue North. The intersection of Brooklyn Boulevard and 69th Avenue North is not expected to operate at an overall acceptable level of service during the a.m. and p.m. peak hours. This intersection is expected to operate at an unacceptable LOS E with an average delay of 70 seconds per vehicle and 65 seconds per vehicle during the a.m. and p.m. peak hours, respectively. Table 3 Year 2011 No Build Peak Hour Capacity Analysis Level of Service Results Level of Service Intersection A.M. Peak P.M. Peak LOS Delay � LOS Delay Brooklyn Boulevard and 69th Avenue North E 70 sec. E 65 see. Brooklyn Boulevard and CEAP Site Access * A/D 25 sec. A/F 50 sec. Brooklyn Boulevard and 71st Avenue North C 30 sec. C 20 sec. CEAP Site Access — Exiting Left -Tum Movement -- 45 sec. -- 110 sec. CEAP Site Access — Exiting Right -Turn Movement -- 25 sec. -- 15 sec. CEAP Site Access — Entering NB Left -Turn Movement -- 20 sec. -- 15 sec. For signalized intersections, delays shown represent overall intersection delay. For unsignalized intersections, delays shown represent the worst side -street approach. * Indicates an unsignalized intersection with side -street stop control. The overall LOS is shown followed by the worst approach LOS. Significant queuing issues are expected to occur during the a.m. peak hour at the intersection of Brooklyn Boulevard and 69th Avenue North, specifically the westbound direction. The westbound queues are expected to significantly impact adjacent intersections and both public and private access along 69th Avenue North. To improve operations at the intersection of Brooklyn Boulevard and 69th Avenue North to an acceptable level of service, the following improvements are recommended: • Convert the existing westbound through lane to a left-turn lane (will provide dual westbound left -turn„ lanes) • Convert the existing westbound right -turn lane to a through lane • Construct a new westbound right -turn lane with storage (approximately 150 feet) Mike Schraad February 8, 2010 Welsh Construction, LLC Page 14 YEAR 2011 BUILD CONDITIONS — SCENARIO 1 To determine how well the existing and future roadway network will accommodate year 2011 build traffic forecasts, an operations analysis was conducted during the a.m. and p.m. peak hours. Scenario 1, shown in Figure 3, represents a worst -case situation where the only site access provided is at its existing location along Brooklyn Boulevard. The existing site access currently provides a shared through/left -turn lane and a right -turn lane with minimal storage (approximately 50 feet). Results of the Scenario 1 build analysis shown in Table 4 indicate that all key intersections are expected to operate at an overall acceptable intersection LOS D or better under year 2011 build conditions during the a.m. and p.m. peak hours, with optimized signal timing and recommended geometry at the intersection of Brooklyn Boulevard and 69th Avenue North. Table 4 Year 2011 Build Peak Hour Capacity Analysis — Scenario 1 Level of Service Results Level of Service Intersection A.M. Peak P.M. Peak LOS Delay ." LOS Delay Brooklyn Boulevard and 69th Avenue North D 45 sec. D 50 sec. Brooklyn Boulevard and CEAP Site Access * A/E 35 sec. A/F 75 sec. Brooklyn Boulevard and 71st Avenue North C 30 sec. C 20 sec. CEAP Site Access — Exiting Left -Turn Movement -- 70 sec. -- 170 sec. CEAP Site Access — Exiting Right -Turn Movement -- 25 sec. -- 25 sec. CEAP Site Access — Entering NB Left -Turn Movement -- 25 sec. -- 15 sec. For signalized intersections, delays shown represent overall intersection delay. For unsignalized intersections, delays shown represent the worst side - street approach. * Indicates an unsignalized intersection with side - street stop control. The overall LOS is shown followed by the worst approach LOS. On -site queuing can be expected at the CEAP site access during the p.m. peak hour as vehicles exit the site, specifically for left- turning vehicles. The average and 95th percentile queues for left- turning vehicles exiting the CEAP site are expected to be approximately 50 feet and 170 feet, respectively, which equates to approximately eight vehicles queuing on site under worst case condition. These vehicles can expect an average delay of approximately three minutes during the p.m. peak hour. The queues from the exiting left- turning vehicles will occasionally block access to the right -turn lane during the p.m. peak hour, therefore increasing the delay for exiting right - turning vehicles. Delays for all other key movements entering and exiting the CEAP site are considered to be acceptable. Mike Schraad February 8, 2010 Welsh Construction, LLC Page 15 YEAR 2011 BUILD CONDITIONS — SCENARIO 2 To address the potential queuing issues at the CEAP site access under year 2011 build conditions during the p.m. peak hour, a second access scenario (Scenario 2) was reviewed to determine the impacts this scenario would have on the adjacent roadway. Once again, an operation analysis was conducted under year 2011 build conditions during the a.m. and p.m. peak hours. The CEAP site access for Scenario 2 (Figure 4) shows a realigned 71st Avenue North that provides a shared access for the Willow Lane Elementary School and the CEAP site. This access allows vehicles currently exiting the site destined north along Brooklyn Boulevard or Noble Avenue North to gain access to the signalized intersection at Brooklyn Boulevard and 71st Avenue North. It should be noted that this scenario has the potential to draw vehicles into the neighborhood to the west. However, based on the directional distribution, the amount of vehicles traveling through the neighborhood would be minimal (approximately 60 daily vehicles). Discussions with City staff also indicate that under this scenario, there is a desire to restrict the westbound left -turn movement out of the existing CEAP site access onto Brooklyn Boulevard. This results in a three - quarter access intersection (left -in and right- in/right -out) at the existing CEAP site access. The year 2011 Scenario 2 build condition volumes are shown in Figure 8. Results of the operations analysis indicate that all key intersections are expected to operate at an overall acceptable LOS D or better under year 2011 Scenario 2 build conditions during a.m. and p.m. peak hours, with the recommended improvements at 69th Avenue North. All other queuing issues previously discussed continue to be mitigated under the scenario as well. Operations at the proposed new CEAP site access are not expected to negatively impact access to the adjacent neighborhood along 71st Street or Perry Avenue. Table 5 Year 2011 Build Peak Hour Capacity Analysis — Scenario 2 Level of Service Results Level of Service i Intersection A.M. Peak P.M. Peak LOS Delay LOS Delay tt� Brooklyn Boulevard and 69th Avenue North D 45 sec. D 50 sec. Brooklyn Boulevard and CEAP Site Access * A/D 25 sec. A/C 15 sec. Brooklyn Boulevard and 71st Avenue North C 30 sec. C 20 sec. 71st Avenue North and New CEAP Site Access * A/B 10 sec. A/B 10 sec. CEAP Site Access — Exiting Left -Turn Movement -- -- -- -- CEAP Site Access — Exiting Right -Turn Movement -- 25 sec. -- 15 sec. CEAP Site Access — Entering NB Left -Turn Movement -- 25 sec. -- 15 sec. For signalized intersections, delays shown represent overall intersection delay. For unsignalized intersections, delays shown represent the worst side -street approach. * Indicates an unsignalized intersection with side -street stop control. The overall LOS is shown followed by the worst approach LOS. Mike Schraad February 8, 2010 Welsh Construction, LLC Page 16 Although the intersection of Brooklyn Boulevard and 71st Avenue North is expected to accommodate year 2011 Scenario 2 build conditions there are safety concerns with the existing geometric alignment and nearby residential driveways. The east approach of this intersection (Noble Avenue North) provides a dedicated left -turn lane and a shared through/right -turn lane. The west approach of 71st Avenue North provides a shared left/through/right -turn lane. There is also a residential driveway that is approximately 20 feet west of the intersection of Brooklyn Boulevard and 71st Avenue North. Realigning this roadway to accommodate the CEAP site access and reconnect the residential neighborhood access further west at the 71st Avenue North connection may provide the opportunity to develop an eastbound left-turn lane and shared through/right -turn lane. It is preferable to align left-turn movements with one another on either side of an intersection (east and west approach), when possible. Impacts associated with this geometric improvement would need to be investigated further by the City and/or developer. PARKING DEMAND REVIEW A parking demand review was completed to document current parking demand and to address future potential parking demand issues. Information provided in Table 6 is based on current utilization surveys conducted in May, 2009. This data indicates that the current CEAP site utilizes approximately 55 percent of its current parking supply during the middle of the day. The existing city requirement for the site is 203 spaces resulting in an 11 space deficit. Although there is an existing deficit, current utilization indicates the supply is sufficient for this use. Under year 2011 build conditions, the project site will provide approximately 366 spaces for 85,314 square feet of office space (combination of surface and structured parking). Based on city requirements, the proposed CEAP site expansion is required to have 233 spaces, resulting in a surplus of 133 spaces. It should be noted that under Scenario 2, a portion of the parking spaces (approximately 34 spaces) for the adjacent school would be eliminated to accommodate the new driveway. However, the CEAP site has a sufficient parking surplus to accommodate both the CEAP site and the adjacent school. A cross - access agreement should be considered to address the adjacent school parking deficit under Scenario 2 conditions. Table 6 Parking Operations Summary Available Current City Expected Scenario Parking Utilization * Surplus / Spaces (AM/Noon/PM) Requirement (Deficit) Existing 192 28/100/15 203 (11) Proposed CEAP Site 366 -- 233 133 Adjacent School (Scenario 2) 81 (z) -- 115 �'� (34) Total (CEAP and School) 447 -- 348 99 * City parking requirements are identified by Brooklyn Center city ordinance, section 35 -704. (1) Represents the existing parking supply and was assumed to be the future city requirement for the school. (Z) Represents the amount of parking spaces that will remain after construction of the new driveway. Mike Schraad February S, 2010 Welsh Construction, LLC Page 17 SITE ACCESS REVIEW Scenario 1 Scenario 1 utilizes the existing site access provided along Brooklyn Boulevard and also shows a service access along 71st Avenue North. An issue that should be addressed is the ability of service vehicles to maneuver on -site without having to disrupt traffic along 71st Avenue North. Another issue to consider is emergency vehicle access near the parking structure. The parking structure should be designed to allow a typical emergency vehicle to pass under the existing drop -off area of the site to minimize emergency vehicle conflicts. Proper signage for both parking and internal circulation should be installed. Scenario 2 Scenario 2, known as the "Design Concept Alternative," utilizes both the existing site access provided along Brooklyn Boulevard and realigns the existing 71st Avenue North to a shared access between the Willow Lane Elementary School and the CEAP site. Once again, the ability of service vehicles to maneuver on -site without having to disrupt traffic along 71st Avenue North is essential. Emergency vehicle access near the parking structure should be designed to allow a typical emergency vehicle to pass under the existing drop -off area of the site as well as the cross - access area between the proposed new 71 st Avenue North connection and the parking structure. Proper signage for both parking and internal circulation should be installed. TRAVEL DEMAND MANAGEMENT Although the proposed site expansion does not have a significant impact on adjacent intersection or corridor operations along Brooklyn Boulevard it is important to be thoughtful of all levels of potential impact. Therefore, the developer has developed a plan of action to be completed with the support of the City of Brooklyn Center. This action plan is designed to create an effective commute management program, which should reduce the demand for parking at the site and minimize the impact on local roads due to vehicular travel to and from the development. The success of this plan relies on the level of commitment to marketing and implementing the programs identified herein, with support from the City and tenant employers (CEAP, ISD #279, and Hennepin County Human Services & Public Health Department). The purpose of this action plan is to support the overall City of Brooklyn Center transportation goals. The objective is to encourage employees to use alternative modes of transportation other than driving alone, such as carpooling, vanpooling, bus, and walking or bicycling. CEAP will pursue the following objectives and strategies to achieve this goal: Support and Promote Bicycling and Walking as Alternatives • Build and maintain a bicycle friendly development • Disseminate bicycle commuting information Support and Promote Transit as an Alternative • Work toward increasing and/or retaining transit service to the development • Disseminate transit service information Mike Schraad February 8, 2010 Welsh Construction, LLC Page 18 Support and Promote Car and Vanpooling • Provide preferential parking for program participants • Disseminate carpool/vanpool service information Provision of Information on Transportation Alternatives • Disseminate alternative transportation mode choice information at prominent locations throughout the development • Support alternative mode choice awareness campaigns Vehicular Traffic Movement & Access Restriction • Work with large truck delivery schedules to ensure they occur outside of the peak hours • Design site plan layout to accommodate all deliveries on -site • Design site plan layout to provide efficient vehicular circulation and access to egress points Participate with Regional TDM Organizations • Develop a Commuter Benefits Coordinator (CBC) position • Support the I -494 Commuter Services Monitoring of Action Implementation and Goal Achievement • Conduct a statistically valid baseline commuter survey within the first six months of opening the expanded development • Conduct a second baseline survey after another six months have past (one year after opening) • Work with the City of Brooklyn Center to determine whether the strategies employed are meeting the goals of the plan CONCLUSIONS AND RECOMMENDATIONS Based on the analysis, the following conclusions and recommendations are offered for your consideration: • Results of the existing operations analysis indicate that all key intersections currently operate at an overall acceptable LOS D or better during the a.m. and p.m. peak hours, with existing traffic control and geometric layout. • The intersection of Brooklyn Boulevard and 69th Avenue North currently operates near /at capacity during the a.m. and p.m. peak hours with average delays of approximately 55 seconds per vehicle. • The CEAP site exiting left -turn delay during the p.m. peak hour is approximately two minutes per vehicle. • Based on field observation and SimTraffic analysis, the westbound left -turn movement at the intersection of Brooklyn Boulevard and 69th Avenue North consistently queues beyond its storage distance of 200 feet during the peak hours. Mike Schraad February 8, 2010 Welsh Construction, LLC Page 19 • To address the existing queuing issues identified, optimization of the signal timing at the intersection of Brooklyn Boulevard and 69th Avenue North is recommended. • Results of the existing operations analysis with optimized signal timing indicate that all existing queuing issues will be minimized and corridor travel times along Brooklyn Boulevard will remain relatively similar. • While queues and specific movement delays are improved with optimized timing, the intersection of Brooklyn Boulevard and 69th Avenue North will still be at capacity during the a.m. and p.m. peak hours. • Results of the year 2011 no build analysis indicate that two out of three key intersections are expected to operate at an overall acceptable intersection LOS D or better under year 2011 no build conditions during the a.m. and p.m. peak hours, with existing traffic control, geometric layout and optimized signal timing at the intersection of Brooklyn Boulevard and 69th Avenue North. • The intersection of Brooklyn Boulevard and 69th Avenue North is expected to operate at an unacceptable LOS E with an average delay of 70 seconds per vehicle and 65 seconds per vehicle during the a.m. and p.m. peak hours, respectively. • Significant queuing issues are expected to occur during the a.m. peak hour at the intersection of Brooklyn Boulevard and 69th Avenue North, specifically the westbound direction. The westbound queues are expected to significantly impact adjacent intersections and both public and private access along 69th Avenue North. • To improve operations at the intersection of Brooklyn Boulevard and 69th Avenue North to an acceptable level of service under year 2011 no build conditions, the following improvements are recommended: o Convert the existing westbound through lane to a left -turn lane (will provide dual westbound left -turn lanes) ,,. Convert the existing westbound right -turn lane to a through lane o Construct a new westbound right -turn lane with storage (approximately 150 feet) • The proposed expansion of the CEAP site (Phase II) consists of an additional 59,679 square feet of office space, resulting in a total of 85,314 square feet of office space. • Results of the year 2011 Scenario 1 build analysis indicate that all key intersections are expected to operate at an overall acceptable intersection LOS D or better during the a.m. and p.m. peak hours, with optimized signal timing and recommended geometry at the intersection of Brooklyn Boulevard and 69th Avenue North. o The exiting left- turning vehicles from the CEAP site can expect an average delay of approximately three minutes during the p.m. peak hour. The queues from the exiting left- turning vehicles will occasionally block access to the right -turn lane during the p.m. peak hour, therefore increasing the delay for exiting right- turning vehicles. • Results of the year 2011 Scenario 2 build analysis indicate that all key intersections are expected to operate at an overall acceptable LOS D or better during a.m. and p.m. peak hours, with the recommended improvements. o Although the intersection of Brooklyn Boulevard and 71st Avenue North is expected to accommodate year 2011 Scenario 2 build conditions there are safety concerns with the existing geometric alignment and nearby residential driveways. Mike Schraad February 8, 2010 Welsh Construction, LLC Page 20 o Impacts associated with this geometric improvement would need to be investigated further by the City and/or developer. • Based on city requirements, the proposed CEAP site expansion is required to have 233 spaces, resulting in a surplus of 133 spaces. o Under Scenario 2, the adjacent school will have a deficit of approximately 34 parking spaces. Since the CEAP site has a parking surplus, it can accommodate the adjacent school deficit. Therefore, a cross - access agreement should be considered. • Sufficient space should be provided to allow service vehicles to maneuver on -site without having to disrupt traffic along 71st Avenue North. • The parking structure should be designed to allow a typical emergency vehicle to pass under the existing drop -off area of the site to minimize emergency vehicle conflicts. • Proper signage for both parking and internal circulation should be installed. • Although the proposed site expansion does not have a significant impact on adjacent intersection or corridor operations along Brooklyn Boulevard it is important to be thoughtful of all levels of potential impact. CEAP will pursue the following objectives and strategies to achieve this goal: • Support and Promote Bicycling and Walking as Alternatives • Support and Promote Transit as an Alternative • Support and Promote Car and Vanpooling • Provision of Information on Transportation Alternatives o Vehicular Traffic Movement and Access Restriction • Participation with Regional TDM Organizations • Monitoring of Action Implementation and Goal Achievement H. \Projects\6820JleporA100208 _Final_CEAP Site_TS.doc I� Application Filed on 3 -29 -10 City Council Action Should Be Taken By 5 -28 -10 (60 Days) Planning Commission Information Sheet Application No. 2010 -006 Applicant: Welsh Construction. LLC Location: Southwest Quadrant of Brooklyn Boulevard and 71st Avenue North (7051 Brooklyn Boulevard) Request: Site and Building Plan Approval The applicant, Welsh Construction, LLC., on behalf of Osseo Area Schools (ISD 279) and CEAP, Inc. (Community Emergency Assistance Program) are requesting site and building plan approval for a 63,362 sq. ft. addition to the existing Adult Education Building, located at 7051 Brooklyn Boulevard, a three story parking structure providing 400 parking stalls, access improvements from the realignment of 71" Avenue North, and internal access improvements within the Early Childhood and Family Education parking lot. In 2005, Independent School District #279 (Osseo Schools) constructed the Adult Education Center at the above address to be home to the Adult Basic Education Program. The location was selected because of its central location, access to public transportation and the fact that the property was owned by the School District. At that time, an addition was planned for a three story addition to accommodate Community Emergency Assistance Program, Inc. (CEAP) and have space available for partner service organizations. The planned addition would have doubled the size of the original building. The full project (original building plus addition) was submitted and approved by the Brooklyn Center Planning Commission and City Council. In the intervening time that the Adult Basic Education Program has been functioning, it has become clear that the location and facility are both very successful. The Osseo School District has since moved its Enrollment Center into the facility to help facilitate efficient processing of new students and intra- district transfers. The proposed Northwest Family Service Center concept was developed in a collaborative effort of Osseo Schools, CEAP and Hennepin County Human Services and Public Health Department (HCHS). HCHS joined the partnership recognizing that the facility and location can provide a home for a new service model which centralizes services and creates a user friendly environment. All partners visualize improved service to clients that are common to each. BACKGROUND INFORMATION On November 8, 2004, the City Council accepted the Planning Commission's recommendation 4 -15 -10 Page 1 and granted the necessary rezoning, subdivision and sitje plan approvals to facjilitate the phased development of a three story, 48,600 sq. ft. office /service building on a 3.63 acre lot. The first phase construction commneced in 2005 and included the completion of the southern 2/3 of the site which included the following: • Three- story, 25,000 sq. ft. office building for the School District's Adult Education Program. • 189 surface parking stalls. • Completion of the southern 2/3 of the approved landscape improvements and screening walls from the adjoining R -1 zoned property to the northwest and the R -4 property to the southeast. • A common entrance and shared access agreement for the Adult Education Building and the Willow Lane Apartments. • The completion of an off site storm water detention pond. • Sidewalk connections to the Early Childhood and Family Education Center. On April 12, 2010, the City Council accepted the Planning Commission's recommendation and moved to proceed with the rezoning of the following propreties to PUD/R -1 and PUD /C -1: Lot 1, Block 1, Center Brookdale Addition (R -1 residence /vacant lot) Lot 4, Block 1, Replat of Block 2 Lang Addition (R -1 residence /vacant lot) Lot 2, Block 1, Osseo Willow Lane Addition (R -1 former elementary school) Lot 3, Block 1, Osseo Willow Lane Addition (C -1 Adult Ed Building) ZONING The PUD/R -1 zoning classification applies to the Elementary School site (Willow Lane ECFE Center) and the two adjoining residential lots. The PUD /C -1 zoning classification applies to the Northwest Family Service Center (Phases I & II of the ISD 270 and LEAP, Inc. building). The general development plan for this PUD maintains the standard perimeter setbacks and allows flexibility on the interior setbacks between the R -1 and C -1 property. COMPLIANCE WITH THE ORDINANCES Ordinance Proposed Front Yard Brooklyn Boulevard 35 ft. 37 ft. 71" Avenue North 25 ft. 29 ft. Side Yard NW R -1 84 ft. (2 X bldg Height) 145 ft. SE R -4 10 ft. 40 ft. existing 4 -15 -10 Page 2 West — ECFE 10 ft. 2 ft. (PUD Plan) South — ISD 279 Storm Pond 10 ft. 0 ft. (PUD Plan) Parking Setbacks Brooklyn Boulevard 35 ft. 65 ft. 71 Avenue North 15 ft. 15ft. (N. W. R -1) 15 ft. 66 ft. SE (R -4) 10 ft. 15 ft. South Storm Pond 10 ft. 0 ft. Parking Stalls (1 per 235 sq. ft.) 376 400 LANDSCAPE PLAN The landscape plan provides for the planting of 15 Red Maple trees (two within the front yard of Brooklyn Boulevard, seven within the boulevard area of the new access drive from 71" Avenue North, four along the western side of the parking structure, and one on an island east of the park structure. Nineteen Black Hill Spruce trees are used for screening (11 are located to screen the service unloading area from 71" Avenue and seven are proposed along the lot line of the adjoining residential lot to the west. These coniferous trees are planted 15 ft. on center to provide screening effect as they mature. Additionally, the plan provides for the planting of seven Service Berry trees (decorative trees) and a planting bed of 41 Burning Bushes (shrubbery) along the outer edge of an employee patio area which is adjacent to the southwest corner of the building. Twenty -one Anthony Waterer Spirea are being placed along the foundation from the second phase building entry to the employee patio area. The plan also illustrates nine Burning Bush shrubs within the existing planting bed south of the Adult Education entry. The City's landscape point system requires that a 3.9 acre lot achieve a minimum of 352 points using the following criteria: Planting Type Minimum Size Points Shade Trees 2' /z " 10 Coniferous Trees 5 ft. height 6 Decorative Trees 1 inch diameter 1.5 Shrubs 12 inch diameter .5 The plantings illustrated on the landscape plan total 344 points. The Phase I plantings that will be retained include: 11 decorative trees within the front yard and along entry drive, four Maples 4 -15 -10 Page 3 and foundation planting beds (shrubbery), which provide an additional 60+ points, making a total landscape tally of 404 points. The plan indicates that all of the yard areas, parking islands and distributed areas will be sodded. The Engineering Department has noted that the utility plan illustrates that the storm water discharge line is proposed to be located within the side yard adjoining the parking lot. This construction will require that the restoration of this area be added to the landscape plan for sod and tree replacement. Additionally, in reviewing the demolition plan and the initial Phase I landscape plan, we recognize the opportunity to relocate a significant amount of trees that were installed in 2005 and 2006. • The parking islands that will become part of the parking structure included 12 decorative trees and three deciduous trees (Coffee tree). • The western lot line and area adjoining the ECFE parking lot included two Maple trees and 11 coniferous trees. The use of these trees would add an additional 48 points to the landscape score and provide the opportunity to continue a decorative tree landscape theme within the Brooklyn Boulevard front yard; add trees within the Perry Avenue front yard where the driveway is currently located and replace the trees that will likely be lost with the utility construction of the storm water discharge line. The landscape plan will need to include an irrigation system. This system should be extended to cover the boulevard area between the side walk and curb. Additionally, staff is requesting that the plans include the resodding of this boulevard area and that the two Maples shown in the front yard be relocated as boulevard trees. SCREENING The first phase improvements included a 15 ft. buffer and a 6 ft. high cedar fence to match an existing screen fence along the Willow Lane ECFE parking lot and was extended along the northwest property line adjoining the R -1 lot. A similar fence and 15 ft. setback was applied to the property line which is adjacent to the R -4 property to the southeast. The zoning code requires the placement of this fence or an alternative acceptable to the City Council. It is staff's opinion that the option of a landscaped berm in lieu of the fence adjacent to the R -1 lot is not an alternative given the existing tree coverage on the vacant lot. The applicant should reconstruct the fence to meet the screening requirement from this adjacent R -1 lot. ACCESS A critical component of the site plan review and the future redevelopment options within the Brooklyn Boulevard corridor which includes the preservation of the residential character of the 4 -15 -10 Page 4 adjoining neighborhood, is directly related to how the City, County and the applicant address improvements to the current entrance unto Brooklyn Boulevard and how the signalized/controlled intersection of Brooklyn Boulevard/Noble Avenue and 71 Avenue can be incorporated into accessing the current development and future redevelopment of this area. The applicant has employed SRF Consulting, an experienced traffic engineer in the Metro area to review traffic within the Brooklyn Boulevard corridor and provide recommendations to improve upon the safety of the current driveway access and a design concept to maximize the use of the signalized intersection to better serve this development, the ECFE site and discourage the potential of future non - residential traffic from entering the 71 Avenue and Perry Avenue neighborhood. As part of the planned improvements, CEAP, Inc. has acquired the two existing residential properties, previously referenced and included in the replatting of the Northwest Family Service Center development. The City has acquired the corner lot addressed as 4800 71 Avenue North. These acquisitions have enabled the design of the realignment of 71" Avenue and this leg of the intersection. The City's acquisition will allow the County to include a right turn lane off of Brooklyn Boulevard and the options in aligning the sidewalk and crossings. It also enables the City to complete the Brooklyn Boulevard streetscape improvements for this quadrant of the intersection. The plans for these street improvements, including sidewalk connections along Brooklyn Boulevard and 71 Avenue North, boulevard landscaping and entrance to the neighbored will be presented to the Planning Commission for review and comments. Note: We are also inquiring on the possibility of a bus stop to better serve this facility which would allow the improvements within the boulevard area to be completed before the final landscaping and irrigation improvements are installed. UTILITIES The utility plan indicates that utilities to serve this building and provide fire protection will be extended from the 71 Avenue North lateral lines. The existing water line within the front yard along Brooklyn Boulevard will provide both the domestic water and feed the buildings fire suppression system. A relocated sanitary sewer service and a water line for hydrants will be constructed within the new access drive from 71 Avenue. The Fire Chief will be involved in the building plan review which includes the parking structure. SITE DRAINAGE Storm water management involves the use of the existing off -site pond area which appears to function as an infiltration basin, and the northerly extension of storm sewer to the service /loading area on the north side of the addition with two catch basis to collect run off from the new access 4 -15 -10 Page 5 drive. A copy of the storm water report for this development was included in the companion preliminary plat review. Site grading, erosion control and the utility improvements associated with this project are being reviewed through the City's Engineering Department, which includes the coordination/assurances that the necessary Watershed and MPCA permits are obtained. ARCHITECTURAL REVIEW The architect has provided the following description of the proposed architectural treatment of the second phase addition and parking structure. The proposed addition is at three story facility constructed to complement the existing facility by utilizing the same materials and details used in the original construction. Exterior materials will include face brick (colors and shapes to match existing), aluminum windows and doors, tinted glass (vision and spandrel), and exterior insulation finishing system (upper portions of building). Due to the need for additional space needed to house HCHS, the size of the addition has increased from what was proposed originally (23,700 sq. ft.) to what is needed for the programs now (64,000+ sq. ft.). A three level parking structure is proposed which will provide entry points to the building on both the second and third floors. The parking structure is proposed as a precast structure finished in materials and colors to compliment the building. Photographs of the existing building will be presented at the meeting to identify the architectural features of this building which makes it an attractive component within the Brooklyn Boulevard corridor and how the use of accent lighting on the building makes this a very distinctive structure during the evening hours. LIGHTING/TRASH A lighting plan has been submitted indicating that the proposed lighting will not exceed the foot candles authorized under Section 35 -712 of the zoning ordinance (not to exceed three foot candles at a residential property line or ten foot candles at a public right of way or non- residential property line). The plan provides for six light poles, three along the east side of the access drive and three adjacent to the surface parking are. The balance of the site includes lighting constructed as part of the parking structure. The street improvement project will include lighting for the re- design of the 70 Avenue intersection/neighborhood entrance. The site plan indicates that the existing trash enclosure would be relocated to the service /loading area south of the expansion. Pictures of this screening wall and opaque gate will be presented at the meeting. Staff is reviewing the code to determine if the intent of the code was to allow screening of 4 -15 -10 Page 6 containers or if the code requires the containers to be within a building. This may require that the applicant construct an accessory structure in lieu of a screening wall with a gate to comply with Section 35 -411 (Special Requirements) in C -1 and C -IA zoning district. Attached for reference. (Paragraph I & 3, potential contradiction as it relates to off - street loading or storage.) RECOMMENDATIONS Motion finding the plans are consistent with the PUD general development plan for this property and recommendation that site plan approval to facilitate the second phase of the Northwest Family Service Center subject to the following conditions: 1. The building plans are subject to review and approval by the Building Official with respect to applicable codes prior to the issuance of permits. 2. Grading, drainage, utility and erosion control plans are subject to review and approval by the City Engineer prior to the issuance of permits. 3. Any outside trash disposal facilities and/or roof top mechanical equipment shall be appropriately screened from view and provided with opaque gates, consistent with Chapter 35 -411. 4. The building is to be equipped with an automatic fire extinguishing system to meet NFPA standards and shall be connected to a central monitoring device in accordance with Chapter 5 of the City Ordinances. 5. An underground irrigation system shall be installed in all landscaped areas to facilitate site maintenance. 6. B -612 curb and gutter shall be provided around all driving and parking areas. 7. An as -built survey of the property, improvements and utility service lines shall be submitted to the City Engineering Department. 8. Plan approval is exclusive of all signery which is subject to Chapter 34 of the city ordinances. 9. All work performed and materials used for construction of utilities shall conform to the City of Brooklyn Center's current standard specifications and details. 10. The applicant shall enter into an easement and agreement for maintenance and inspection of utility and storm drainage systems prior to the issuance of permits. 11. The applicant shall provide appropriate erosion and sediment control devices on site during construction as approved by the City Engineering Department. 4 -15 -10 Page 7 12. The final plat comprehended under Planning Commission Application No. 2010 -004 shall be approved by the City Council and filed with Hennepin County prior to the issuance of occupancy permits for this project. 13. The rezoning comprehended under Planning Commission Application No. 2004 -005 shall be approved prior to the issuance of building permits for the project. 14. Access to the site along Brooklyn Boulevard is subject to approval by Hennepin County Transportation Department and the obtaining of the appropriate permit. 15. The public improvements for the realignment of 71 Avenue North and the signalized intersection are approved and installed with or simultaneous with this project. 4 -15 -10 Page 8 I NYW IWAVI3B FFF l 7FT17 NV,d I— 3U5 � x. — — — — MMtl / q I I A. I IILI�� I SI a I • (z3]M X ) Z \ ui - en] z�fB .. s Lm Mwww rAr�]s Musv � a v i z E ID r �.•• .., u a.evu v�ve � s in+ 3xuo \ / / � y_PS Pc lv vNVV�v MM+al1 Susaapoat %M ; v1 ' �( na� �� � � / s 'Jriivarre 1Nau Sz _ sn�al v µiu5ea,a6 Sb � WE YWV 3�6 Iio. � . I1s5Ml s 3xri xen2 un i .0 Loraos a rgsl �s .ar rl3v texraros ( Nn�vooee) .02 PL ns :., Sri92E arr..awrei�m L ros Tuha]KSV •. - . av!pr. 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I '3- .-_ ._ - � �S � .� � _ - m DG vn.easn urav,LrE _ �, t ,T± � '�• � �'� ./ � I I L t.+ ZV I l Z / I vaovosm ua.r wn a,wwn _____�, II. !�➢ • is vuzw scrercz ac seacrc ' r r EXISTING �- 5 - ELEIAENTARY ,(rrFa / ,o s0a axon. scram, 4rn,x 1 1 SCHOOL BUILDING ot o.. v I r: : 9' I is 1.: �. - - � i auBnITTdL I , .. ` FEB JaRr 11.1010 5 TE PdNNG . I ® (PAVING ND UTILITIES PLAN L6.1 L6.0 X \: RLLLFL omqu�m W xutmmt ew�ibnosNN.a.a m. sonFn.ss ". - : _ \ - . ros„m.nn er onv m iwv :s. se. t•no.m.oss - W U p.smy.. "e +�axyas. J ]C �e.sorso- mo�m.a o�ub. w *.. rvt.In.,a mow.e�" �; ee Twx wmeN Nt w.m roaw.m o¢owans�.n W N396 VIM.3xo-N9 -%a -YT s 3WOO .6K 3ta Deurbatn 4FTY3t ar✓6eF Na /two U CD e.ba6 l 6MnWxe 3.16 ]053 xa.63 IIO M. tY�LYN -Nf TtW N ebr rM� bowe sHe sWd 50 350 6F VOFts rna Db� f66 Page I of I MEMORANDUM DATE: April 13, 2010 TO: Gary Eitel, Business and Development Director FROM: Bruce Johnson, Engineering Technician Supervisor SUBJECT: Preliminary Plat and Site Plan Review — Northwest Family Services Center Addition (CEAP site) Public Works Department staff reviewed the following preliminary documents submitted for review for the proposed Northwest Family Services Center Addition: • Preliminary Plat dated March 10, 2010 • Boundary and Topographic Survey dated ( Revised March 8, 2010) • Development plans dated February 11, 2010 Subject to staff approval, the preliminary plat must be developed and maintained in substantial conformance with the referenced plans, unless modified by the staff recommended conditions below: 1. The final plat must include dedicated public drainage and utility easements over the following locations and existing or proposed public utilities, as determined by the City Engineer: A. A drainage and utility easement extending over the proposed watermain and sanitary sewer locations from the new 70 Avenue dedication to the termination point. B. A minimum 10 -ft wide drainage and utility easement along the perimeter boundary of the plat. 2. Legal descriptions must be obtained for all existing easements, which must be vacated as part of the subdivision and site re- development process. 3. An updated certified abstract of title or registered property report must be provided to the City Attorney for review at the time of the final plat application (within 30 days of release of the final plat). 4. The proposed subdivision plat is located adjacent to County State Aid Highway (CSAH) 152. Minnesota Statutes require that the City submit the plat to the Hennepin County Transportation Planning Division for written comments and recommendations. The plat has been submitted and comments are forthcoming. All Hennepin County comments will be conditions of approval. 5. The site development plans and utility relocations must be reviewed and coordinated with Northwest Family Services Center Addition. Page 2 of 4 Preliminary Plat Memo, April 13, 2010 i i i Xcel Energy, CenterPoint Energy, Qwest Communications and other private utility companies prior to final plat application, vacation of easements and/or approval of any site modifications. 6. Cross access agreements are required between the parcels. 7. A development agreement is required that includes all conditions of the project approval, subject to the final site plan of the City Engineer. This agreement must also include provisions by the applicant to develop, design and construct the public roadway and utility improvements required for 71" Avenue and the intersection of 71" Avenue and Brooklyn Boulevard, all subject to the approval of the City and the County. Should the developer desire the City to provide these improvements, a petition and waiver must be provided by the applicant petitioning the City to provide the needed public roadway and utility improvements along with a waiver of assessment for 100 percent of the costs for the public improvements. These costs will be the full responsibility of the applicant/property owner. Boundary Survey 8. Show sewer and water services for 4813 and 4819 71" Avenue. 9. On 6" DIP water service, verify and show on the plan whether the gate valve is on the hydrant side of the watermain or the building side of the watermain. 10. Show trees marked for protection shown on U and have these located by a surveyor. 11. Verify if vault at SE corner of 4813 is a fiber optic line. Preliminary Plat 11. The proposed R/W for 71 st Avenue for the preliminary plat must be developed off of survey topography (not an aerial). This means that the preliminary roadway geometrics, alignments, plans, etc. must be developed accurately enough to establish the proposed R/W so the parking and building setbacks are accurate. The R/W will need to be 30 -ft minimum from centerline including through the south leg of the intersection. All of these items need to be verified and completed nnor to approving the preliminary plat 12. Provide streetscape easement beyond the R/W in the SW quadrant of the intersection and along the south boulevard to ensure enough City easement for the streetscaping and sidewalk elements. (Note easement vs. dedicated R/W — the difference is that the setbacks are based off of the property line (R/W) and not an easement). 13. Parking lot must be revised so it does not encroach into the setback. 14. Sidewalk with boulevard should be extended on both sides of the northerly private driveway into the site to provide pedestrian connectivity. GA\Engineering\Development & Planning\ACTIVE Development ProjectACEAP, Co NW Hub, Osseo school service Center - 2009 \correspondence\Prelim Plat Review Memo.doc Northwest Family Services Center Addition. Page 3 of 4 Preliminary Plat Memo, April 13, 2010 Sheet L3.0 14. Show the water and sewer services for 4813 and 4819 71" Avenue will be removed and cut off at the main prior to house demolition. 15. See comment #9 above regarding the 6" watermain, remove watermain to Tee and plug Tee, remove the gate valve if it is on the hydrant line. 16. Show removal and replacement of the wood fence on the south line for storm sewer work. 17. Trees marked to be protected on the east lot line, will have storm sewer under as indicated by sheet L5, revise plans. 18. A minimum 4 -ft boulevard is required between the walk and the curb and gutter along 71 Avenue. This will affect the location of the R/W. Sheet L4.0 19. The property line in the NW corner encroaches on the next lot to the west. Permanent easement must be obtained or plans must be revised. 20. Provide a dimension of the distance from the ramp structure to the west property line. It must meet the required City setback. 21. Show site pedestrian circulation routes from and to all building, parking ramp and regional sidewalk connections. 22. Show internal vehicle turning movement layouts for buses and delivery vehicles for all anticipated paths. 23. Provide a larger pork -chop island at the easterly entrance with a more significant deflection angle to help deter the illegal left -turn movement. 24. Remove 2 parking stalls in the SE corner of the school parking lot. Sheet L5.0 25. Storm sewer line on east property line is being installed under protected trees, show trees as removed or relocated. G:\Engineering\Development & Planning\ACTIVE Development Projects \CEAP, Co NW Hub, Osseo school service Center - 2009 \correspondence\Prelim Plat Review Memo.doc Northwest Family Services Center Addition. Page 4 of 4 Preliminary Plat Memo, April 13, 2010 26. Remove and replace wood fence on south property line with storm sewer. 27. Install rip rap and filter fabric at all F.E.S. locations impacted with this project. 28. Show storm sewer profiles. 29. Provide storm sewer piping design calculations. 30. Provide drainage calculations showing that the site plans meet the City's and watershed district's design standards. 31. Center storm sewer in the 20 -ft drainage and utility easement. 32. Provide rock construction entrance. 33. Provide SWPPP. Sheet L6.0 34. For new watermain install 6 » gate valve in 71 st Avenue. 35. Watermain as planned is under existing fiber optic line and vault, indicate how or where the vault will be relocated. 36. Relocate MH #1 to within public R/W 37. Provide sanitary and watermain service details for building and parking ramp. 38. Provide hydrants in locations as determined by the City's Fire Chief. Sheet L7.0 39. Provide irrigation for the entire site. The aforementioned comments are provided based on the information submitted by the applicant at the time of this review. Subsequent approval of the final plat and site plans may require additional modifications based on engineering requirements associated with final design of the water supply, storm drainage, sanitary sewer, final grading and geometric design as established by the City Engineer and other public officials having jurisdiction over approval of the final site plans. Need standard drainage and utility easements and conditions. I I GAEngineering\Development & Planning\ACTIVE Development Projects \LEAP, Co NW Hub, Osseo school service Center - 2009 \correspondence\Prelim Plat Review Memo.doc