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Home My WebLink Aboutagenda.apz.20171219 AGENDA Aspen Planning and Zoning Commission REGULAR MEETING December 19, 2017 4:30 PM Sister Cities Meeting Room 130 S Galena Street, Aspen I. SITE VISIT II. ROLL CALL III. COMMENTS A. Commissioners B. Planning Staff C. Public IV. MINUTES A. DRAFT Meeting Minutes for December 5, 2017 V. DECLARATION OF CONFLICT OF INTEREST VI. PUBLIC HEARINGS VII. OTHER BUSINESS A. Aspen Pedestrian Mall Project - Review of Design Alternatives *** Link to Design Alternatives on page 9 of the packet may not work. Design Alternatives attached to agenda packet starting on page 10. *** VIII. ADJOURN Next Resolution Number: 18, Series 2017 Typical Proceeding Format for All Public Hearings 1) Conflicts of Interest (handled at beginning of agenda) 2) Provide proof of legal notice (affi d avit of notice for PH) 3) Staff presentation 4) Board questions and clarifications of staff 5) Applicant presentation 6) Board questions and clari fications of applicant 7) Public comments 8) Board questions and clarifications relating to public comments 9) Close public comment portion of bearing 10) Staff rebuttal /clarification of evidence presented by applicant and public comment 1 1 ) Applicant rebuttal/clarification End of fact finding. Deliberation by the commission commences. No further interaction between commission and staff, applicant or public 12) Chairperson identified the issues to be discussed among commissioners. 13) Discussion between commissioners* 14) Motion* *Make sure the discussion and motion includes what criteria are met o r not met. Revised April 2, 2014 Regular Meeting Planning & Zoning Commission December 5, 2017 1 Mr. Skippy Mesirow, Chair, called the December 5, 2017 meeting to order at 4:30 PM with members Mr. Ryan Walterscheid, Mr. Keith Goode, Mr. Spencer McKnight and Mr. Skippy Mesirow. Mr. Rally Dupps, Ms. Kelly McNicholas Kury and Ms. Jasmine Tygre were not present. Also present from City staff; Mr. James R. True, City Attorney, Ms. Jennifer Phelan, Deputy Director of Planning, Ms. Hillary Seminick, Planner and Mr. Justin Barker, Senior Planner. COMMISSIONER COMMENTS There were none. STAFF COMMENTS: Ms. Klob commented there will be three openings on the board as of January 2018 and asked the commissioners to encourage people to apply for the positions. PUBLIC COMMENTS: There were none. MINUTES Mr. McKnight motioned to approve the November 7th minutes and Mr. Goode seconded the motion. All in favor, the motion passed. DECLARATION OF CONFLICT OF INTEREST Mr. Walterscheid stated he would recuse himself from the 700 Ute Ave hearing. PUBLIC HEARINGS – 700 Ute Ave – Aspen Alps – Planned Development Amendment Mr. Mesirow asked if legal notice had been provided to which Mr. True replied it had been submitted. The affidavits were submitted as Exhibit C. Mr. Mesirow then opened the hearing and turned the floor over to staff. Ms. Hillary Seminick, Planner, stated this detailed review is the last in a three-step process for a project to replace the Aspen Alps 300 building. She then noted the location of the project on the Aspen Alps campus and added it is located in the Lodge (L) zone district. The campus consists of seven free market buildings and functions similarly as The Gant. Units are often rented out to the public. She then provided pictures of the current 300 building and stated it was designed by Fritz Benedict. The building needs to be replaced because it is structurally compromised and suffers from lateral loading. The repair of the building would require extensive geotechnical work at great expense with no P1 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 2 guarantees the repairs would address the issues. The applicant has elected to pursue an amendment to the development approval in order to replace and upgrade the existing building. In an earlier review and approval of the project by Council, two conditions were included with the approval. 1. Add a kitchenette to lock-off unit 309B which has been included in the plan set. 2. The P&Z Commission should consider the materials, fenestration and decks on the street-facing elevation in order for the design to be more cohesive with the rest of the campus and provide a better street orientation. She provided a picture containing the Council approved drawing, the current proposed design with updated materials. The materials will be similar to what already exists including wood siding, stone chimney elements, metal clad windows, transparent railings and a green roof. In addition to the material changes, overhangs were added to the design to add more horizontality and a reference to the Benedict design. The fenestration was also enlarged on both the left and right sides, decks were also added resulting in a reduction of the maximum floor area from 19,804 sf to 19,718 sf or roughly an 86 sf reduction. She noted typically changes to the approved dimensions are not in the Detail Review, but in this case, there is an exception. Council granted the ability to amend the maximum floor area in order to accommodate the new deck areas. They had anticipated an increase, but the applicant was able to achieve a reduction in the overall floor area. All other dimensions of the project fall within the dimensions of the approval ordinance. Ms. Seminick noted there is a typo in the resolutions. Corrected versions were distributed to P&Z in regard to the new floor area change. She noted in Section 3, it should be amended to read 19,781 sf. She stated the project has been in the review process since early 2015 and over the nearly three-year long process, the applicant has continued to work with Staff, P&Z and Council to work towards the final design. She then provided a series of slides demonstrating the evolution of the project. Staff finds the design meets Council’s conditions of approval and therefore recommends approval. Mr. Mesirow asked for any questions of staff. Mr. Mesirow asked if the entrances from the original design are now behind vertical elements. Ms. Seminick then pointed where the entrances are now located. He asked about the access to the balconies and Ms. Seminick replied the balconies have private access. Mr. Mesirow then turned the floor over to the applicant. Mr. Alan Richman, Alan Richman Planning Services, then introduced the applicant team. · John Corcoran, General Manager of the Aspen Alps · Gilbert Sanchez, Project Architect, Gilbert Sanchez Architect · Jesse Swan, Project Engineer, Sopris Engineering P2 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 3 · Sam Baucum, Bluegreen Landscape Architecture · Tom Todd, Attorney for the Association, Holland & Hart LLP · Pam Cunningham, former Aspen Alps General Manager Mr. Richman noted the applicant team is appreciative of Staff’s support on this project and entirely comfortable with the conditions proposed in the draft resolution. Mr. Richman wanted to note the Aspen Alps has been a part of Aspen for a very long time. This building is over 50 years old as described, needs to be replaced. The vast majority of the units are in a rental pool and available to visitors of Aspen. He also reminded the commission the scope of the current review and the project team is not proposing any departures at this time. Mr. Sanchez then walked though architectural design. He noted in general, Council was happy with the elevations viewed by P&Z, but expressed concerns with the monolithic design and wanted more three- dimensional relief which is more consistent with Benedict’s designs. Mr. Sanchez stated they worked with the owners and reconfigured the layout to allow for the balconies to be added which creates the shadow lines and breaks up the massing. By reshaping the building, they were able to reduce the highest part of the building. Mr. Sanchez then reviewed the material selection including wood siding, stone veneer and board framed concrete. Cable rails will be used to reduce the amount of glass. He displayed an elevation demonstrating the materials and described how the texture, graining and placement of the materials further reduces the monolithic quality. The use of stone, with its lighter color, on the foundation helps the building overall to feel wider. He then displayed elevations for each side of the building. He noted materials on the lawn side will be primarily concrete balconies and glazing. Mr. Mesirow asked for any questions of the applicant. Mr. Goode asked if they still plan to maintain the blue spruce located behind the building. Mr. Sanchez stated they are planning to maintain it along with some cottonwoods. Mr. Mesirow asked what they are doing differently this time to ensure the same geological issues do not happen to the new building. Mr. Sanchez replied the new building will have a substantial concrete foundation lacking in the current building. Mr. Mesirow Skippy asked if they designed for current and future conditions and Mr. Sanchez replied the engineers consider the existing and future conditions. Mr. Mesirow then opened for public comment, which there was none, so he closed this portion of the hearing. Mr. Mesirow then opened for commissioner discussion. Mr. McKnight thinks it looks great. Mr. Goode believes the design is amazing and the project is a great example of everyone working together. P3 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 4 Mr. Mesirow feels it has improved over time and likes the wood siding. He particularly likes the addition of the green roof. He is also in favor of the project. Mr. Goode motioned to approve Resolution 16, Series 2017 as amended. Mr. McKnight seconded the motion. Mr. Mesirow requested a roll call. Roll call: Mr. Goode, yes; Mr. McKnight; yes; Mr. Mesirow, yes; for a total of three (3) yes votes and zero (0) no votes. The motion was approved. Mr. Mesirow then closed the hearing. PUBLIC HEARINGS – 210 W Main St – Growth Management, Certificates of Affordable Housing Credit Mr. Mesirow asked if legal notice had been provided to which Mr. True replied it appears sufficient. The affidavits were submitted as exhibit E. He then opened the hearing and turned the floor over to staff. Mr. Justin Barker, Planner, reviewed the project. The property is a 6,000 sf lot located in a mixed use (MU) zone district and the Main Street Historic District. The Historic Preservation Commission (HPC) has reviewed the conceptual design and will also be reviewing the final design. Currently, there are six free- market units, one affordable housing unit and one combination commercial\residential unit on the site. The applicant is proposing to demolish the existing structure development and build eight affordable housing units with the intention of establishing credits for the units. The design consists of three structures with two two-story buildings facing Main St and one three-story structure on the back of the property. Mr. Barker explained the Growth Management Review which is both the demolition of the existing housing and the development of the new housing and the creation of the credits. He stated in most scenarios, the demolition of multi-family housing requires some form of housing mitigation which is typically accomplished by providing 50% of the existing number of units as Category 4 units or 100% of the units as resident-occupied (RO) units. Once completed, the same number of free market units can be built back that had been previously demolished. A third option stated if the existing number of units are torn down and replaced only with affordable housing. The applicant is proposing the third option for this project. Mr. Barker stated there are criteria related to the affordable housing. He added the project meets option one and two. 1. 50% of the net livable is located above grade. 2. Sale is recommended as the preferred option, however rental is permitted in certain scenarios including replacing with 100% affordable housing. 3. Project complies with the Aspen Pitkin County Housing Authority (APCHA) guidelines. Mr. Barker stated in terms of the APCHA guidelines, the project needs a recommendation from the APCHA Board. The board reviewed the application on November 1st and recommended approval with some conditions. The guidelines identify the minimal net livable for two-bedroom units is 900 sf. The number may be reduced by the board up to 20% if criteria has been met. The board is looking for above average units before allowing any reduction. Mr. Barker displayed a table as shown on p330 of the P4 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 5 packet. He stated the units could down as low as 720 sf and the proposed units exceed this amount in most of the situations by a fairly good margin. The applicant is requesting about 16% on only two units and the others is about 6% - 7%. APCHA was comfortable with the proposed unit sizes and recommended approval noting the significant storage outside of the unit. The basement of the project will be for mechanical and extra storage. The units are all above grade as well. Mr. Barker then discussed the criteria for the certificates of affordable housing credits. Staff found the criteria has been met. He noted the requirements for issuing the credits include: 1. Deed restrictions must be in place and filed 2. Certificates of Occupancies must be granted for each of the units 3. The units must be Category 4 or lower as defined by the applicant. APCHA recommends 50% of the units be Category 4 and the balance being 4 or lower. Staff’s recommendation is supportive of the approval of the project. Mr. Mesirow asked for any questions of staff. Mr. Goode asked when the current building was built. Mr. Ted Guy, applicant, stated the back building was probably built in the 1950’s or early 1960’s. The front building was built on Waters Ave and moved to a block foundation in the late 1960’s, early 1970’s. Mr. Mesirow asked for clarification of the approval process and wanted to know if it goes back to Council. Mr. Barker replied the next step would be to go HPC for the final design review. He added the mass and scale have already been approved by HPC. Mr. Mesirow asked if they receive credits for the existing affordable housing units. Mr. Barker replied if the commercial use converts back to free market where the combined commercial\residential unit exists currently, the affordable housing is no longer required. Mr. Mesirow asked who will be managing the project. Mr. Barker replied the applicant would, not APCHA. Mr. Guy stated he may manage it with the other affordable housing group in the valley. Mr. Mesirow then turned the floor over to the applicant. Ms. Sara Adams, BendonAdams, then introduced Mr. Ted Guy, the applicant. Mr. Guy stated they are happy with staff’s recommendation. He noted the team went through a lot of design work with HPC. Ms. Adams provided slides depicting the existing conditions. She then provided slides of the proposed project, noting it will consist of eight two-bedroom units. The applicant is requesting Category Four or less for the 100% rental project. There are six parking spaces off the alley. Seven spaces are required, but HPC waived one parking space. There is exterior storage for all the units and an interior courtyard protected by the structure from the traffic and dust of Main St. She continued stating the project has a focus on livability including the following. · A bike rack · Two bathrooms for each unit P5 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 6 · Private outdoor porch or balcony for each unit. She then provided site plans and described the location of the parking, the units, trash, exterior storage, the two ADA units, and the basement. She added Mr. Guy may be able to squeeze more storage out of the basement. Ms. Adams then displayed floor plans. She noted the project was heard by HPC three times during the conceptual review. They ended up with a stacked unit in one corner to provide relief to the Tyrolean Lodge. She then displayed elevations of the project noting they would be returning to HPC for the final design review. She then reviewed their request including: · 100% rental project · Category Four or less - The first proposed Category 3 or less and after many meetings with APCHA and working through the financials. · Housing credit approval for 18 FTEs Mr. Mesirow asked for any questions of the applicant. Mr. McKnight asked what the estimated rent would be for Category Four. Mr. Guy replied he does not know. He stated the Category Three is about $1,635 per month for a two-bedroom. Mr. Mesirow asked if the credit is different for different categories. Ms. Adams stated it is the same because the number of FTEs is based on the number of bedrooms. He asked if they originally considered Category Three because it is more favorable. Mr. Guy replied you can get more fee-in-lieu with the lower categories, but you also get lower rental income so it is a balance of short-term vs. long-term. Mr. Mesirow asked why he decided to make it a rental instead of a sale project. Mr. Guy stated he always wanted to make it a rental project and feels Mike Kosdrosky, APCHA Director, does not care for sale projects. Mr. Guy wanted to provide a couple of long term tenants the opportunity to purchase their units in the new project. Ms. Adams stated if they wanted to make them for sale, they would have to amend this resolution. Mr. Mesirow asked if more density was considered. Mr. Guy replied HPC did not like the mass and scale of a single building. Mr. Guy originally designed it with one L-shaped building with a much larger courtyard. Ms. Adams stated the density of the project is driven by the available parking. HPC waived the parking by one space. Mr. Barker stated the applicant was granted special approval for a higher floor area which allows the project to have more density than typically allowed. Mr. Mesirow asked if they could have fit more parking spaces, would HPC have been acceptable of more density. Mr. Guy and Ms. Adams did not feel HPC would have approved more density and noted HPC would only approve a two-story building on Main St. P6 IV.A. Regular Meeting Planning & Zoning Commission December 5, 2017 7 Mr. Walterscheid finds it interesting APCHA is not allowing the conversion to sale units because the last few projects before P&Z were allowed the option. Mr. True noted a necessary amendment in Section 1 where City Council is mentioned. It should be P&Z. Mr. Mesirow asked Mr. Guy his preference regarding the categories. Mr. Guy believes they will all be Category Three, but none would be Category One. Ms. Adams stated they want the flexibility and exercise what is in the code. Mr. True stated he is struggling with the way it is written to allow for Mr. Guy to select all the categories. Ms. Phelan stated the land use code allows for Category Four or lower for credits. Ms. Adams believes the City recently did something similar for their projects and Mr. Barker confirmed this was true. Mr. Mesirow then opened for public comment, which there was none, so he closed this portion of the hearing. Mr. Mesirow then opened for commissioner discussion. Mr. Goode feels the building needs to be replaced, but will miss it as a part of Aspen’s messy character. Mr. Guy noted it was on the cover of the 1993 AACP. He added they will try to reuse the materials on the back of the building and in the courtyard. Mr. McKnight also likes the project and finds APCHA’s stance a bit odd regarding the rental instead of sale. Mr. Mesirow stated he is in favor of letting them select the category to allow them to get the project done. He sees this as another example of the credits program working. He also likes the green roof. He hopes that this is not another example of the lack of creativity in parking that is impacting the density of a project. Mr. McKnight motioned to approve Resolution 17, Series 2017 with the suggested amendment to Section one change City Council to P&Z. Mr. Goode seconded the motion. Mr. Mesirow requested a roll call. Roll call: Mr. McKnight; yes; Mr. Goode, yes; Mr. Walterscheid, yes; and Mr. Mesirow, yes; for a total of four (4) yes votes and zero (0) no votes. The motion was approved. Mr. Mesirow then closed the hearing. OTHER BUSINESS None. A motion was made to adjourn and seconded. All in favor, motion passed. Cindy Klob City Clerk’s Office, Records Manager P7 IV.A. Page 1 of 2 MEMORANDUM TO: Planning and Zoning (P&Z) Commission FROM: Tim Thompson, CoA, Project Manager Darla Callaway, Design Workshop, Associate THRU: Jack Wheeler, Capital Asset Manager DATE OF MEMO: December 13th, 2017 MEETING DATE: December 19th, 2017 RE: Aspen Pedestrian Mall Project – Planning and Zoning Review of the Three Design Alternatives REQUEST OF PLANNING AND ZONING: Discuss the conceptual design alternatives for the Aspen Pedestrian Mall Redevelopment Project and provide an opportunity for the commission to comment. Each alternative will be discussed by the design team in detail. The design team will also share a phase 2 community outreach update and findings. The planning and zoning commission is not being asked to select one alternative, but is encouraged to weigh in on the parts of the alternatives which they like. The feedback will be used by the design team to develop a preferred conceptual design which will be a synthesis of different parts from each of the alternatives. PREVIOUS PLANNING ACTION: Previous, a presentation was made to planning and zoning about the project inventory, analysis, design criteria, and previous community outreach. DISCUSSION AND HISTORY: The Aspen Pedestrian Mall surface is more than forty years old, and some of the underground infrastructure has not been upgraded in sixty years. Not only are the bricks reaching the end of their lives, but the surface is uneven and is not compliant with the Americans with Disabilities Act (ADA) regulations. Most of the mall trees are reaching maturity, and their size and confined growing space creates challenges for their health. The goals of the Pedestrian Mall Redevelopment Project are: · Maintain historical integrity and character of the Malls while upgrading infrastructure and access. · Explore innovative ways to improve the storm water infrastructure systems to further protect the Roaring Fork watershed. · Replace aging utilities to serve customer needs for the next 50 years. · Retain the Malls as an urban park with a strong forestry program that promotes best practices for the continued health of the urban forest. · Increase mall accessibility to meet modern code. · Engage the public and business owners to explore the best ways to enhance the Mall experience. Aspen Pedestrian Mall Redevelopment Project includes Hyman, Mill, Cooper and Galena streets. Significant utility upgrades are necessary to anticipate the next 50 years in downtown Aspen. P8 VII.A. Page 2 of 2 The project’s scope emphasizes achieving those utility upgrades while preserving the underlying character, historic integrity, and businesses within the Mall for future generations. The project will be implemented in five phases, each involving public input. PLANNING COMMENTS: _______ ATTACHMENTS: Exhibit I – Design Workshop Design Alternatives Book dated 11/10/17 1. Hyperlink: Design Alternative Book – 11_10_17 P9 VII.A. 1 DESIGN ALTERNATIVESP10 VII.A. 2P11 VII.A. 3 TABLE OF CONTENTS 4 5 12 15 45 69 93 125 131 137 141 OVERVIEW PROJECT GOALS DESIGN CRITERIA PHASE 1 FEEDBACK DEVELOPMENT OF CONCEPTS UTILITIES + STORMWATER ALTERNATIVE 1 ALTERNATIVE 2 ALTERNATIVE 3 COMMUNITY FEEDBACK COMMUNITY INPUT TO DATE PARTNERING SESSION II STAKEHOLDER SESSION II COMMUNITY OPEN HOUSE IIP12 VII.A. 4 MAINTAIN HISTORICAL INTEGRITY AND CHARACTER OF THE MALLS WHILE UPGRADING INFRASTRUCTURE AND ACCESS. EXPLORE INNOVATIVE WAYS TO IMPROVE THE STORMWATER INFRASTRUCTURE SYSTEMS TO FURTHER PROTECT THE ROARING FORK WATERSHED. REPLACE AGING UTILITIES TO SERVE CUSTOMER NEEDS FOR THE NEXT 50 YEARS. RETAIN THE MALLS AS AN URBAN PARK WITH A STRONG FORESTRY PROGRAM THAT PROMOTES BEST PRACTICES FOR THE CONTINUED HEALTH OF THE URBAN FOREST INCREASE MALL ACCESSIBILITY TO MEET MODERN CODES. ENGAGE THE PUBLIC AND BUSINESS OWNERS TO EXPLORE THE BEST WAYS TO ENHANCE THE MALL EXPERIENCE. PROJECT GOALS P13VII.A. 5 DESIGN CRITERIA URBAN PARKS | HYMAN + COOPER AVENUES • Designs should address current issues impacting integrity: consider alternative methods to make bridges and buildings universally accessible in ways that do not impact integrity; consider locating temporary installations to not interrupt the characteristic form and pattern of the urban parks. • Designs should orchestrate movement with placement of bridges into and between spaces instead of ‘through’ routes. Designs should allow movement through if outdoor dining is placed in the center. • Designs should retain a consistency of ground plane (color, texture, scale) that match the original intent. • Designs should emphasize a continuity of linear spaces, even if spaces need changes, versus creating a series of individual spaces. • Designs should retain contributing features / details – channel, brick gutter, rolled curb, etc. – and relationships between features. • Designs should test solutions that work within the existing framework yet maximize the usage of Mall and the safety of pedestrians. • Designs should retain the patterns and intent of contributing details, i.e., vegetation, and relationships. • Designs must show conceptual sections of the proposed modifications. URBAN PLAZA | MILL + GALENA STREETS • Designs should address integrity, considering that Mill Street North at the park has changed the most of all Mall spaces. • Designs should consider potential for additional compatible change or new additions within areas with diminished integrity (i.e. South Mill where trees have been replaced). Designs could consider the potential of additional compatible change or new additions within areas with diminished integrity – this area might offer the most opportunity for modification as it has changed the most of all spaces. • Designs should be accomplished holistically with modifications retaining spatial arrangements (of which paving helps to define) vs redesigning individual spaces on Galena and Mill. • Designs should address integrity where small scale features (non-historic) interrupt visual character. Mixed tree species and mixed sized on Mill diminish the bosquets. Temporary installations interrupt the characteristic form and pattern of Mill Street. • Designs should orchestrate movement and views using the original design intent. • Designs should retain a consistency of ground plane in color, texture, scale, etc. that reflect original design and intent. • Designs should emphasize connected linear spaces and connections at nodes. • Designs should create cohesive spaces vs a series of individualized spaces. • Designs should retain / repair contributing features / details – brick paving, brick gutters, fountains, brick tree wells, wood benches before replacement. • Designs should remove or address the concrete planters to restore integrity to this area. • Designs could consider extensions of more safe and direct access to Durant Street on Mill Street. • Designs should consider heightening the existing performance spaces on Mill Street. URBAN PLAZA | MILL + GALENA STREETS • Designs should address integrity, considering that Mill Street North at the park has changed the most of all Mall spaces. • Designs should consider potential for additional compatible change or new additions within areas with diminished integrity (i.e. South Mill where trees have been replaced). Designs could consider the potential of additional compatible change or new additions within areas with diminished integrity – this area might offer the most opportunity for modification as it has changed the most of all spaces. • Designs should be accomplished holistically with modifications retaining spatial arrangements (of which paving helps to define) vs redesigning individual spaces on Galena and Mill. • Designs should address integrity where small scale features (non-historic) interrupt visual character. Mixed tree species and mixed sized on Mill diminish the bosquets. Temporary installations interrupt the characteristic form and pattern of Mill Street. • Designs should orchestrate movement and views using the original design intent. • Designs should retain a consistency of ground plane in color, texture, scale, etc. that reflect original design and intent. • Designs should emphasize connected linear spaces and connections at nodes. • Designs should create cohesive spaces vs a series of individualized spaces. • Designs should retain / repair contributing features / details – brick paving, brick gutters, fountains, brick tree wells, wood benches before replacement. • Designs should remove or address the concrete planters to restore integrity to this area. • Designs could consider extensions of more safe and direct access to Durant Street on Mill Street. • Designs should consider heightening the existing performance spaces on Mill Street. HISTORIC CHARACTER P14VII.A. 6 NODES • Designs should consider holistic modifications to spatial, ground plane, plantings, etc., versus designing individual spaces. • Designs should retain a consistency of ground plane in color, texture, scale, etc. that reflect the original design and intent. • Designs should create cohesive connections vs a series of individualized spaces. • Design should emphasis connections at nodes. • Design should retain contributing features / details – brick paving, brick gutters, brick tree wells and views. • If future expansion is considered (possibly in areas designed but not built) respect the original design intent but create spaces of their own time and place. • Designs should consider consistency when adjacent to roads (curbs, flush, raised, accessibility) • Designs should recognize the past investment in the recent improvements. • Designs should recognize and maintain a continuity to small scale improvements/features (kiosk, etc.). WHEELER NODE • All Designs should address current issues impacting integrity. Wheeler Node remains very similar to the original construction. Views and physical connections to the park have been modified from the original construction, diminishing integrity. • Designs should consider Wheeler Node and Mill Street Mall together in any future modifications. • Designs could alter the information kiosk and other temporary features. Features that interrupt the spatial pattern of the Wheeler Node slightly diminish its integrity and could be improved. WAGNER NODE • Designs should address integrity. Designs could consider potential for additional compatible change or new additions within areas with diminished integrity. Wagner Node might offer the most opportunity for modification as it has changed the most of all spaces. • Designs should address current issues impacting integrity. Views and physical connections to the park have been modified from the original construction, diminishing integrity. • Design should consider Wagner Node and Mill Street Mall together in any future modifications. • At least one alternative could consider a redesign of Sister Cities Plaza. However, the ‘Sister Cities’ message is important, and the messaging should be maintained. INDEPENDENCE NODE • Designs should address integrity. The information kiosk interrupts the spatial pattern of the Independence Node, slightly diminishing its integrity. Temporary installations interrupt the open character of this node. BRICK MATERIALS + FEATURES • Designs should address current issues impacting integrity, including the small incremental changes to features. Removal of original features or replacement with very different styles of features (i.e., circular bench) and temporary installations along Cooper and Hyman Avenues, and Mill Street Mall threaten features. • Designs should acknowledge the original features as key components in patterns and the holistic character of the Mall should inform future modifications and design decisions. • Designs should repair original features in a manner that retains original material first (replace in-kind second), maintains a consistency of ground plane (color, texture). • Designs should retain / repair contributing features / details – brick paving, brick gutters, brick tree wells, wood benches etc. • Designs should consider long-term maintenance, availability and replacement of proposed materials. TREES + VEGETATION • Designs should address integrity: addition / replacement of tree species that differ from original in scale, form, etc. • Designs should address overgrown and mature vegetation in a manner that considers the original intent – replanting, thinning / pruning, new hardy species. • Designs should acknowledge the original vegetation patterns (lawn, tree patterns, relationships) as key components that contribute to the character of the Mall, informing future modifications and design decisions. • Designs should consider annual plantings. • Designs should reduce the diversity of tree species, reinforcing the original intent. • Designs should consider the long-term maintenance of trees in associated with future utility access. HISTORIC CHARACTER DESIGN CRITERIA P15VII.A. 7 PROGRAMMING • Designs could locate potential locations for outdoor food service or dining intended for established business owners, if in the future, but recognize that may trigger a code amendment. One design alternative should have a food service or temporary food set-up. • Designs should integrate temporary/flexible elements of flower and art displays. • Designs should integrate events/activity areas for small performances, outdoor dining and talks. • Designs should not integrate events/activity areas for large musical performance or outdoor movies (outside of Wagner Park). • Designs should include additional outdoor furniture, water features and plantings. • Designs should maintain current level of short-term lease outdoor dining space. • Designs should examine partnerships between city and festivals, non- profits, schools, etc. • Designs should create flexible areas with more programming options. • Designs could add more daily, self-initiated activities such as games, interactive art, temporary play. • Designs could consider a new zone at edge of Wagner Park with seating, games, etc. • Designs could consider a redesign and reactivation of the North Wagner Park alley. • Designs could consider temporary stages on Sister Cities’ Plaza. OUTDOOR DINING HYMAN + COOPER • Designs will provide for necessary emergency access (identified in subsequent section) • Designs should test alternative configurations to outdoor dining, recognizing the evolution of buildings serving as restaurants. Options include: o Designs should test dining against the water channels, maintaining 100% passage along both building frontages and the center walkway o Designs should test outdoor dining beside the building frontages. o Designs should test outdoor dining only within the center. o Designs could consider the additions of temporary or retractable shade umbrellas in key locations. MILL + GALENA • Designs will provide for necessary emergency access. • Designs should eliminate the need for platforms or temporary structures. • Design should consider consistency for fencing, furniture, or design palette. • Designs should maintain outdoor dining beside the restaurants. • Designs should test additional community tables along Galena or Mill Street bosquets. • Designs should complement outdoor dining with the Mall’s patterns and relationships. FOOD + BEVERAGE • Designs should complement how existing restaurants could add outdoor food service, if desired. If integrated, this could be achieved every-day, one/two days a week. • Designs should complement food and beverage with the Mall’s patterns and relationships. PROGRAMMING + PLACEMAKING DESIGN CRITERIA P16VII.A. 8 BRICKS • Designs must maintain the continuous texture, color, pattern and material as the existing mall. • Designs will consider permeable or non-permeable pavers options, tied to stormwater management regulations. • Designs will consider sandset vs. mortar set options, tied to the stormwater strategy. • Designs could accommodate minor areas of alternative paving, tied to accessibility strategy against building • Designs should consider the integration of existing bricks to be reused in each alternative. • Designs could locate potential locations for food and beverage services for established business owners, but recognize that it would require a code amendment. MALL/STREET/SIDEWALK TRANSITION • Designs could retain current material or propose new material change. • Designs will examine Mill and Galena Malls to Durant Street to improve connectivity. CROSSWALKS • Designs should reconsider crosswalk locations using current COA standards. • Designs should consider original mall “node” intent of connecting across streets. • Designs could consider the extension of brick pavers or raised table as crosswalks at nodes/intersections (Wheeler/Hyman and Galena/Cooper) SISTER CITIES PLAZA • Designs may reconsider the design of the plaza, while retaining current configuration (paving, seating, trees). • Designs could reconsider paving, seating, and trees with new design. • Designs could restore paving and plaza configuration back to original design. • Designs should consider past investment and meaning of Sister Cities message. SEATING: FIXED BENCHES • Designs should retain memorial benches on the Mall, but only allow consideration of relocation where in sync with a new holistic design modification. • Designs could consider an updated bench design with considering human comfort • Designs chould consider placement of benches and dining opportunities to maximize seating that also respect the Mall’s patterns and relationships. SEATING: MOVABLE TABLES/CHAIRS • Designs should consider diversification of seat types and locations. • Designs should integrate move movable than fixed furniture options. • Designs could consider additional seating along the edge of Wagner Park. • Designs should create consistency in the seating/tables with a higher-level design. WATER FEATURES • Designs should retain the Dancing Fountain and repair or enhance its surface treatment, in keeping with the fountains original intent. • Designs could propose enhancement/refurbishment for the Davis Fountain. Designs could propose smaller footprint. • Designs should consider additional water features in other location(s) on the Mall, potentially at the Galena Node. • Designs could consider how water features could act as barriers. PUBLIC ART • Designs may consider additional locations for temporary public art locations in areas that activate and complement the Mall’s patterns and relationships. • Designs should identify additional locations or programs for temporary/ rotating public art exhibits in areas that activate and complement the Mall’s patterns and relationships • Designs should provide credit for artists. FIREPIT • Designs may consider a redesign or relocation of a firepit, including a temporary or movable feature in an area or areas that activate and complement the Mall’s patterns and relationships. • Designs should be mindful of energy consumption. GROUNDPLANE + FURNISHINGS DESIGN CRITERIA P17VII.A. 9 KIOSK • Designs may consider a relocation or redesign of the kiosk in an area or areas that activate and complement the Mall’s patterns and relationships. • Designs may consolidate the kiosk with other elements, such as the restrooms. • Designs should maintain a centralized location. • Designs might consider consolidation with Wheeler Visitor Center (if wayfinding is solved). RESTROOMS • Designs should retain the current building. • One design alternative could consider an alternative location for the future. • Designs should consider changing out panels of restroom. PLAYGROUND • Designs should explore options for surface treatment (i.e. engineered wood fiber, synthetic material). • Designs could maintain the appearance of a natural playground (i.e. boulders, timbers). • Designs could explore strategies to achieve wider range of ages in a manner that complements the Mall’s patterns and relationships and its relationship to Wagner Park. Aesthetics could better relate to the Mall. • Equipment updates worth exploring in one option. • Designs could include toddler play or lawn area for temporary play elements for young kids. • The amount of playground area is appropriate. Designs will consider the same amount of playground area. BIKE RACKS • Designs must plan for bike storage for Rubey Park. • Designs should examine consolidation and expansion of existing racks on edge of or near the Mall. • Designs should locate bike racks on edge of or near the Mall and at key areas of flow for bicycles. • Designs should consider the Mall’s patterns, relationships and views in addition to usability. • Designs should consider ski storage AND bike storage. (Dual purpose). • Designs could change design of racks, including sheltered racks or interior bike storage location LIGHTING: YEAR-ROUND LIGHTING • All lighting designs will comply with the COA’s dark sky requirements. • Designs will test retrofitting existing posts/luminaires (including original ‘antique lights’) or new posts/luminaires designed to complement the Mall and its patterns and relationships. • Designs should utilize LED luminaires to reduce energy consumption. • Designs should explore alternatives for increasing light in the center aisles designed to complement the Mall and its patterns and relationships. • Designs could explore creative or artistic interactive lighting displays. • Designs should integrate the acorn style for historical reasons but replace heads for consistency. • Designs will assume they will receive exception for dark-sky ordinance. • Designs should integrate warmer lights GROUNDPLANE + FURNISHINGS DESIGN CRITERIA • Designs could consider flexible and temporary play elements along the Wagner Park edge. Storage would be needed in close proximity. Could be below grade in a new electrical building/ vault. • Designs could consider activities for older kids (for example the Aspen Swing Project). • Designs should consider shade for summer and consistency in seating. SIGNAGE • Designs will seek integrated design approaches to minimize the potential of clutter, ensuring placement and design complement the Mall’s patterns, relationships and aesthetic. Very important. • Designs will include locations for street signage at each node at the existing lighting. • Designs will recognize the current update to the signage code. • Designs will update mall directional and regulatory signage to be consistent in graphic design/branding. • Designs will integrate wayfinding signage in a manner consistent with the city. • Designs will consider opportunities to feature areas of historical significance, similar to Aspen Downtown Enhancement Plan • Design must consider signage and views regarding placement and aesthetics. • Design must consider site furnishings and infrastructure as part of overall signage, wayfinding and branding for accuracy and consistency. • The project needs an overall plan/ layer addressing signage, wayfinding and branding cohesively. P18VII.A. 10 LIGHTING: HOLIDAY • Designs will examine holistic aesthetic approach for holiday lighting, including location and appearance. • Designs will utilize LED luminaires to reduce energy consumption. • Designs will explore alternatives for increasing light in the center aisles. TREES: HYMAN + COOPER • Designs will adhere to the 2007 Community Forestry Management Plan. • Designs will assume that the removal trees 885, 206, 387, 182, 843, 882, 1390, and 1394 will be permitted for this project. These trees all have significant health issues that will lead to mortality. All of them would likely have been permitted for removal in the next 1-5 years. • Designs will assume that the removal of trees 298, 354, 184, 853, 1326, 1334, 830, 2778, 1415, 1338, 893, 894, and 2779 may be permitted for removal for this project, but will be determined by construction requirements. These trees would likely have been permitted in the next 5-10 years because they are in confined growing spaces or have structural issues. • Designs will consider that additional trees requested for hazard removal be evaluated on a case by case basis and may require mitigation. • Designs will propose a succession plan with higher quantities of deciduous trees for additional sunlight. • Designs should retain a diverse mixed forest, planted in designs that reflect the original design in intent, with adaptation for current best practices in tree and vegetation management, i.e., bosquets at Mill Street, linear plantings on Cooper, etc. • Designs should maintain transparency to Wagner Park and historic views and viewsheds. • Designs could repair tree canopies and patterns, and add views through various methods (tree pruning, tree elimination, etc.) TREES: MILL + GALENA • Designs will propose a succession plan of non-fruiting crabapples for bosquet plantings. • Designs will consider trees and utilities holistically. • Designs must adhere to the designation of trees appropriate for the Mall as a starting point (spruce, aspen, cottonwood, crabapple), but alternative trees may be considered under special review. The review must consider aesthetic and character of original plan (replace in-kind). PLANTINGS: AT GRADE • Designs should retain current ground plane plantings. • Designs could propose additional ground plane plantings. • Designs could consider a hybrid of perennial and annual plantings. (Designs could consider plantings in line with “native park”. (Annual plantings do not send that message.) • Plantings must consider Aspen’s water efficiency plan. • Plantings could consider a more contemporary approach to planting design. PLANTINGS: HANGING • Designs should retain existing hanging baskets, but could be more of this time. • Designs could propose additional hanging basket locations, if associated with other site elements, but must be balanced with goal of eliminating visual clutter. • Designs should propose self-watering abilities to reduce daily maintenance. LANDSCAPE FENCES • Designs might retain fences to prevent potential damage. • Designs could propose alternative fence designs to build consistency with other site furnishings. • Designs should consider alternative solutions for fence designs to be removed. STREAM CHANNELS + BANKS • Designs should maintain the channels and edges as lawn and provide 100% access. • Designs could introduce additional stones to create additional ripples for moments of interest (but only at the bottom of the channel. • Designs could propose underground structural grass solutions to alleviate wear/tear. • Designs must maintain “ditch” aesthetic in terms of sides. Boulders on the sides does not meet the aesthetic. • Stormwater must not be allowed to get into ditch. Legal issue. • The cross section of the ditches is important and allowing stormwater might change cross-section. GROUNDPLANE + FURNISHINGS DESIGN CRITERIA P19VII.A. 11 LAND USE • Designs must consider tying into utilities as existing properties redevelop. • Designs must consider flexibility to accommodate a mix of land uses. EMERGENCY ACCESS • Designs should provide access in both direction on Hyman, Galena and Mill. • Designs should provide access from the east on Cooper. • Designs should include fire lanes of 20’ widths – 16’ on case by case. • Designs should provide direct access to 3-story buildings. • Designs will consider integration of vehicle barriers for security (must be integrated with urban fabric). PUBLIC VS. PRIVATE • Designs must consider tying into utilities as existing properties redevelop. • Designs must consider flexibility to accommodate a mix of land uses. ACCESSIBILITY • Designs might consider areas that exceed 5% slope, even if that means expanding the construction area. • Designs will reconcile accessibility at the bridge crossings. • Designs may consider an accessible path option in lieu of 100% accessible. • Designs will consider ADA access to historic buildings which may never match the grades of the Mall. • Designs will consider snowmelt in limited areas to improve accessibility. • Designs will consider the pavers and joints for accessibility. SNOWMELT • Designs could examine the inclusion of snowmelt in limited areas. Not all options should include snowmelt. • Designs should be operated by renewable energy with high efficiencies. • Designs should minimize impacts to the picturesque quality of snow-filled streets. • Designs should align snowmelted areas to accessibility through the Mall and to business frontages. • Designs should consider planning for infrastructure even if not desired at this time. SHADE • Designs should maintain the current level of shade throughout the Mall. • Designs should maintain the diversity of shaded areas (i.e. Independence Node = less shade). • Designs can examine how less shade could be provided during winter months. • Designs will consider shade from the perspective that shaded surfaces affect stormwater strategies. • Designs will consider that tree canopy is a credit towards stormwater. (existing only). • Designs will consider quality of shade (dappled vs solid shade). STORMWATER • Designs will adhere to the City’s Urban Runoff Management Plan. • Designs will consider three approaches to stormwater: o Decentralized LID treatment within the mall with no treatment for alleys and private parcels. o Decentralized LID treatment within the mall. Non-LID treatment for alleys and private parcels. o Decentralized LID treatment within the mall with treatment for alleys and private parcels. • Designs will consider use of hydrodynamic separators if systems meet Code specifications. • Designs will consider how to balance stormwater best management practices with preservation of historic fabric. IRRIGATION • Designs will test alternatives for a raw water source, with a new booster pump at Cooper and Galena. • Designs will adhere to the City’s Efficient Landscape Ordinance, Aspen Parks Standards and current landscape best management practices by the irrigation association. • Designs will consider how stormwater flows and soil moisture sensors can reduce irrigation needs. • Designs will consider how stormwater improvements can be integrally designed with the Mall’s historic character and features. • Designs will consider irrigation for all planting areas (minimize hand- watering). LAND USE + OWNERSHIP DESIGN CRITERIA HUMAN COMFORT STORMWATER + UTILITIES P20VII.A. 12 PHASE 1 - COMMUNITY FEEDBACK Additional Comments regarding Mall Seating (optional) 11 responses A couple moe small round Tables. They all fill up quick in the summer I'd like to see more movable furnature, not additional set benches. The benches are important. As pedestrian ways, the benches provide opportunity for respite (much of the rest of downtown does not have enough public seating) and spontaneous social interaction. This is central to the malls' effectivness and appeal. Hyman Mall seating in the summer is very poor. Most of the benches are taken up by bars. The walkways from one side of the mall to the other are blocked. The scattered tables and chairs end up anywhere. Love the benches and little patio tables and chairs currently. Mix of static benches and loose tables and chairs are nice Businesses have been taking advantage of the free seating by staging them outside their storefront. It's great now, maybe could be a little more but don't overdo it. I prefer the public chairs and small tables. Hyman has a good amount. Cooper, Mill and Galena could use more. I'd be open to exploring new configurations. The current seating is sparsly used and therefore adequate. Partnering Session (31 Participants) (2) Community Workshops/Open Houses (68 Participants) Downtown Core, Mall Business Tenants and Property Owners 1970’s Mall Partners Visitors, Events, Tourism and Recreation Operations, Maintenance, Access, Deliveries and Mobility Team Sustainability Arts, History and Culture Park Users Online Survey (67 Participants) Individual Meetings Aspen Fire Department Arborist Police Aspen City Council Aspen Historic Preservation Commission Aspen Planning and Zoning Commission Placemaking Exercise (39 Participants) Ongoing book of community input COMMUNITY WORKSHOP ONLINE SURVEY PLACEMAKING EXERCISEP21 VII.A. 13 67 31 68 39 Online Survey Participants Partnering Session Participants Community Workshop Participants Placemaking Exercise Participants COMMUNITY FEEDBACK (KEY FEEDBACK) In terms of safety and accessibility, what is your opinion regarding snowmleted surfaces on the Mall in the future? Snowmelt is acceptable. Snowmelt is not acceptable. Other 63% 33% From the stated project goals, what are your top priorities? Maintain historic character Encourage pedestrian vitality Maintain park-like character 21% 19% Encourage retail and restaurant vitality 16% 16% The future mall should retain the Mall’s current color, texture, and pattern of paving. Agree Strongly Agree No opinion / Disagree 56% 39% *See Site Analysis Book appendix for full feedback.P22VII.A. 14P23 VII.A. 15 UTILITIES + STORMWATERP24 VII.A. 16 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 4 of 27 INTRODUCTION The purpose of this memorandum is to discuss the design metrics for the utilities on the Aspen Pedestrian Mall, and identify both design opportunities and known constraints. UTILITY DISCUSSION POTABLE WATER EXISTING History of Installation The existing potable water system that is installed in the streets encompassing the Mall (Cooper, Hyman, Mill and Galena) dates to at least 60 years. System Upgrades and Updates Very few planned upgrades have taken place since the original construction. The majority of replacements that have taken place were a result of service line breaks that required repair. Existing Conditions Water Mains An existing 12” CIP is installed in Hyman, and runs the entire course of th e mall extents. An 8” DIP is installed in Galena and runs the entire course of the mall extents. South of Cooper on Mill, a 6” CIP runs to a 8”x6” reducer, where the line size increases to an 8” DIP heading south. The reducer is reported to be located slightly north of the alleyway on Mill, according to City GIS mapping resources. This stretch of 8” DIP reduces back to 6” CIP outside the extents of the mall. The routing of the Hyman waterline is to the north of the two open Wheeler Ditch channels, along the north edge of the plantings. There is an isolation valve on the east branch of the Mill & Hyman intersection. Another valve is located east of the Hyman & Galena intersection. The Hyman waterline can be isolated by shutting off these two valves and the valve on the Galena waterline located south of the tee intersection. (need to verify there is not a waterline going north from Galena) The routing of the Cooper Waterline is between the two Wheeler Ditch channels. There is an isolation valve on the east side near the Galena & Cooper cross intersection, and on the west near the fire hydrant on the Mill waterline. The Cooper waterline can be isolated by shutting off these two valves. The waterline in Cooper is a 6” CIP and runs west to a 90-degree elbow, where it becomes the Mill Street waterline. The routing of the Mill Street waterline begins at the Cooper intersection and runs to the south. There is no water main north on Mill Street that connects to the Hyman waterline. The Cooper waterline has an elbow on the west side that connects to the Mill Street waterline. As the line runs to the south, the line changes from 6” CIP to 8” DIP at a reducer approximately 80 feet south of Cooper Ave. The Mill Street Waterline continues to run south past the mall extents. The Galena Street waterline runs within the street in the west side. It connects to both the Cooper and Hyman waterlines, and continues to both the north and south outside of the mall extents. An Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 5 of 27 isolation valve exists on the south branch of the Galena and Hyman intersection, and two isolation valves exist near the fire hydrant south of the Cooper Intersection and near the alleyway. The Galena Waterline can be isolated by turning off the valves near the fire hydrant, the Galena/Hyman intersection, and the two isolation valves on the Cooper waterline at the Cooper/Galena intersection. Based on building function and square footages taken from the City of Aspen GIS map, the current potable water system demand was estimated for each property based on tables in t he American Society of Plumbing Engineers (ASPE) Design Handbook. The peak flow for the study area is estimated to be 4,400 gpm. Water Services The existing water services are generally accessed the front of the buildings along the Hyman and Cooper frontages. Since there is no waterline in Mill between Hyman and Cooper, the buildings at the southeast corner of Mill and Hyman are served from a service lateral from Hyman that runs south on Mill. For the buildings on the north side of Hyman, water services are accessed from the existing Hyman waterline. The services appear to be a direct connection to the line, and are not impacted by trees, roots, or vegetation. For the buildings on the south side of Hyman, water services are accessed from the existing Hyman waterline. The services appear to be a direct connection to the line; however, they appear to cross under and through the trees. There is a good chance that these services may be impacted by the existing vegetation and root systems. Fire Hydrants and Other Appurtenances Fire hydrants currently serving the fire protection needs of the mall and are effectively located at each of the major intersections. Fire hydrants are generally located at the end of each block and are tapped off the potable water mains. Existing irrigation control valves are supplied from the potable water mains. Modelling and Supply Issues No models of the existing water supply system were provided during this inventory and analysis phase. The design team will work to create one as needed for future design phases of this project. There have been no reported supply issues as demand has trended downwards since the early 1990s for various reasons, such as the adoption of low flow devices and general conservation. Estimated Delivery Water usage for the mall is assumed to be equal to other commercial areas of downtown Aspen. Central potable water pumps provide consistent distribution pressure of approximately 100 psi from the City of Aspen through the pedestrian mall area. P25VII.A. 17 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 6 of 27 Survey/Location Accuracy Potholes Several potholes were completed to verify locations and burial depths of water lines throughout the mall. Care was taken in selecting pothole locations to provide the most information possible while avoiding disturbance of historic and aesthetic areas of the mall. Potholes provide the highest level of accuracy as the actual pipe is exposed and surveyed. Water Mains In addition to potholes, the existing water mains were located via radiolocation services. This method generally provides acceptable horizontal accuracy but provides no depth information. However, most the mains were not picked up due to the lack of continuity between the mains. No tracer wires were observed or located in the area that would have aided in the signals traveling further along the lines. Water Services Water services are generally located by surveying surface features such as curb stops. Buildings with shared service lines may give the appearance of missing services. As redevelopment occurs it is important to keep records of service tap locations and the buildings they serve. Existing Deficiencies Performance of Existing System There have been no major reported issues with the existing distribution mains within the mall. However, this may be expected to change in the near future as the expected service life of the existing system comes near its end. The majority of reported issues include service line breaks that required quick repair. Additionally, it is not known how well the existing valves have been exercised and how well they perform, however, the age of the valves suggest that replacement may be indicated. The existing 6” CIP waterline that is in Cooper Street is undersized for most current fire flow recommendations. Most municipalities and districts, including the City, have a minimum size of 8” for all mains. Some of the older cast iron pipe may also have issues with being brittle and susceptible to cracks and leaking, however, many areas have seen cast iron water mains last over 100 years. Ductile iron pipe has largely replaced the installation of CIP piping for water mains, and it is the recommended material for any replacements of CIP piping. Other Utility Conflicts The existing water mains generally have few conflicts with other utilities within the mall boundaries. The mains located within Cooper and Hyman Avenues share the right -of-way with storm sewer and shallow underground electric that serves pedestrian lighting. The existing main in Mill Street runs parallel to the other utilities along the east side of the right-of-way resulting in few crossings. Ample separation exists between the water and sanitary sewer mains. Site Conflicts The entirety of the water distribution system that serves the pedestrian malls lies within the historic brick-lined streets. Any excavation work for maintenance of the existing line requires removal and replacement of these bricks. In addition, the mains within Hyman Avenue and Mill Street are located beneath rows of mature trees. Maintenance on these lines may require removal of these trees. The water line in Cooper Avenue appears to be relatively centered between the Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 7 of 27 planting beds such that shoring during open excavations could potentially save these trees from needing to be removed. Existing Site Constraints Existing Building Use The existing water mains appear to be located far enough away from the existing buildings such that the entirety of the utility trenches are outside zone of influence of building loads. As redevelopment is not expected to encroach further into the right-of-way, this condition is likely to remain in the future. PROPOSED Water Flow Demands Future Conditions Estimated future water flow demands are pending definition of design concepts. Fire Flow Requirements Estimated future fire flow demands are pending definition of design concepts. The existing 6” CIP water line that is located within Cooper Street probably has challenges in delivering consistent fire flows due to its size. Proposed Infrastructure Water Mains Water Mains to Remain in Place A couple of trenchless technologies exist such that rehabilitating the existing mains in place is a feasible option. Lining (either slip-lining or cured-in-place lining) are popular choices for repairing mains in place where minor loss of capacity is not an issue. Pipe bursting technology can be used to replace the existing pipe with a similar or larger diameter pipe. All trenchless methods include possibilities to reinstate services via the new pipe and do not require the need for excavation outside the access points. Generally, these access points would be located within the intersections at locations of existing Tees and Crosses. Proposed Water Mains to be Added Replace in Kind Replacement of the existing system would involve conventional construction of utility trenches. Challenges include replacement of large sections of brick paving and the removal of several mature trees within the mall. Conventional Main in Alleys In order to preserve the existing characteristics of the pedestrian mall, it is possible to construct new water mains in the alleys while abandoning the existing mains in place. Currently, sanitary sewer mains are located within the alleys as well. In order to meet CDPHE, City, and district separation requirements, it is likely that the sanitary sewer mains would need to be replac ed concurrently. Additionally, many of the shallow utilities would need to be rerouted. P26VII.A. 18 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 8 of 27 Utility Corridor If it is desired to replace several utilities at the same time, one possibility would be to utilize a Utility Corridor. An underground structure (likely constructed of pre-cast concrete) can house a multitude of utilities. As the corridor would likely not be able to be buried to the depth required to maintain temperatures above freezing in a mountain climate, utilities susceptible to freezing would need to be protected in some fashion. This could be accomplished by heating the pipes of those specific utilities or conditioning the tunnel with heated air. Combination of rehabilitation and new mains. As specific replacement needs are determined in future phases of this project, some mains may be chosen to be rehabilitated in-place, while others are replaced or relocated. System modeling can be utilized to aid in these decisions. Water Services Existing Water Services to remain Existing water services will typically be able to remain if existing mains are rehabilitated or replaced in kind. Proposed Water Services New water services will be necessary if mains are relocated. New water services from mains relocated to the alleys would likely be installed via typical utility trenches. The installation and timing for proposed water services would be related to the location of the water mains. If the mains are located in the present locations in the malls, new services could be difficult to install based upon the existing vegetation within the mall center. If the mains are located in the alleyways, upon redevelopment, the services would tie into the alleyway mains. When a critical number of services remain on the existing mall waterlines, the City could make the decision that the existing mall waterline should be abandoned in place, and all remaining water services need to be rerouted to the alleyways. The existing mall waterlines could be capped in place and removed from the system, and abandoned in place. This would provide minimal disturbance to the existing vegetation. Fire Flow Requirements and Other Appurtenances No PRVs or air release valves are anticipated based on topography. Public Works utility service hookups may be desired for watering, street cleaning, or other maintenance procedures. There are no known deficiencies with the existing hydrants and fire protection systems of the existing buildings within the pedestrian mall. As redevelopment occurs, building fire protection systems may need to be brought into compliance with applicable codes and requirements. Proposed Building Use Fire flow requirements of future redevelopment may increase if overall square footage is added. Future Code revisions may also increase requirements. Design Standards Proposed concepts shall follow the direction of City of Aspen, Fire Department, and Utility Company Design Standards and Specifications Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 9 of 27 SANITARY SEWER EXISTING History of Installation The sanitary sewer system is believed to have been installed during the 1960’s. The as-built plans indicate that rim and invert information was cataloged in 1990, with additional information supplemented by video inspection during 2001, 2005, and 2009. System Upgrades and Updates The as-built plans detail repairs that have been made to the system only. These include CIPP lining in 2001 of the Mill Street and Galena Street sewers. Existing Conditions Sewer Mains and Manholes The sewer piping materials currently installed in the pedestrian mall area consist of vitrified clay pipe (VCP), steel, PVC, Cast in Place Pipe (CIPP) and reinforced concrete pipe. According to the as- builts, a 12” VCP runs from the south to north down Mill Street. From the alleyway between Cooper and Durant, a 12” PVC pipe flows into the manhole at the alley south of Cooper. The Mill Street sewer then continues to the north, and is constructed out of 12” VCP to the manhole in the alley between Cooper and Hyman. The Mill Street line to the north appears to be CIPP from the as- builts. Pipe slopes range from approximately 1.5% to 2.5% in the vicinity of the mall extents. The sewerline in the alleyway south of Cooper flows from the east to west, ties into the Mill Street Sewer, and appears 8” VCP according to the as builts. The survey does not show the manhole in the alleyway, and shows a 12”RCP at the Mill Street junction. Therefore, the condit ion and status of this sewerline is not accurately known. The alleyway between Cooper and Hyman has two 12” PVC sewerlines; one runs to the west into the Mill Street sewer, and the other runs to the east into the Galena Street sewer. All of the alleyway sewers that tie into the Mill Street Sewer have slopes ranging from approximately 1.5% to 2.5%. The alleyway sewer that ties into the Galena Street Sewer has a slope of approximately 0.7%. The Galena Street Sewer appears to have been lined with CIPP from its original 20”VCP. During the survey, it was found that a section of the 12” sewer was blocked or has been abandoned in the East side of the alley between Cooper and Hyman (Block 89). Planned video inspection of the system will provide information the existing condition of the sewer mains in the area. Sewer Services The sanitary sewer receives flow from a mixture of residential, commercial and food service customers. Existing as-built plans from the Aspen Consolidated Sanitation District exist that show the distances from manholes to sewer service locations. Capacity The laterals to both the Mill Street and Galena Street sanitary sewer appear to be a minimum of 12” diameter. The Galena spur is running at 0.7%, which has a capacity of approximately 790gpm at 50% full. The other laterals have slopes running at 1.5%-2.5%, giving capacities P27VII.A. 19 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 10 of 27 Existing Flows Based on building function and square footages taken from the City of Aspen GIS map, the current sanitary sewer system fixture units were estimated for each property based on tables from the ASPE Design Handbook. The waste gallons per day (GPD) for the study area is estimated to be 12,000 GPD. Survey/Location Accuracy Sewer Mains The locations of the sewer mains are identified from the observation of each manhole and depths to the pipe invert from the rim. Materials and diameter of the mains are observed and noted. Sanitary sewer mains are assumed to be in a straight line between manholes for the project area. Video Surveillance It is not known when the last time the sanitary sewer mains were video surveyed by the Aspen Consolidated Sanitation District. Information on the as-built plans supplied by the District have dimensions from manhole to services, therefore this data was probably gathered by video surveillance. Manhole Rim and Invert Elevations Manholes labeled “Sewer” are surveyed from the ground, and invert elevations are measured from removing the manhole lid. Some of the manholes are mislabeled. Sewer Services Sewer services were not located by surveying methods. Service locations show up on the as-built plans with a distance measured from manholes, and an arrow showing the side of the service on the sewer line. Existing Site Constraints The sanitary sewers are generally located in a south to north fashion for the interceptors, which consist of the Mill Street and Galena Street interceptors. Both of these sewers have occasional utilities crossing them, such as water, storm sewer, and shallow utilities including gas, telephone, and cable. In the roadways, most of the crossings are at a perpendicular angle to the sewer, are located higher than, and present little conflict. The Galena Street sewer is only connected to in the center alleyway, and it is within the roadway section of Galena. The Mill Street sewer along the mall is covered with bricks and has access challenges due to the bricks. There are four sanitary sewer laterals located in the alleyways. All of these alginments are in close proximity to numerous shallow utilities, including many that cross over and maintain little or no horizontal spacing and run parallel to the sanitary sewer lateral. PROPOSED Sewer Flow Demands – From Water Demands Future Conditions The impact of future conditions will be determined once the proposed concepts have been finalized. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 11 of 27 Proposed Infrastructure The proposed infrastructure for the sanitary sewer infrastructure will be the decision of the Aspen Consolidated Sanitation District, based upon their proposed needs and evaluation of the system. For the purposes of this memorandum, it is understood that ACSD will provide their analysis and make their own recommendations using their internal evaluations as a separate task. Utility Corridor It is proposed to keep the sanitary sewer infrastructure in the alleys to serve the buildings. The sanitary sewer may be located within a utility corridor, depending upon the depth and size of the corridor, and if it will be designed accordingly to take into consideration gravity fed utilities. Since the existing location is deep compared to the requirements of other utilities that would share a corridor, the sewer mains could be located below grade in an “open bottom” style corridor, that would feature walls for other utilities to use, and native grade on the bottom for access to the sewer. Design Standards Proposed concepts shall follow the direction of ACSD Design Standards and Specifications. STORM SEWER EXISTING History of Installation Per design and as-built plans dated April 1976, a majority of the storm sewer infrastructure was installed during the construction of the mall. This also included the Mill Street Storm Sewer that runs to the north (downstream) and tied into existing infrastructure in the Mill Street / Bleeker Street intersection. System Upgrades and Updates No additional information or upgrades of the storm sewer system are believed to be installed. The as-built plans did show future extensions to the storm sewer system located to the south of the Galena/Hyman intersection, as well as to the east of the Galena/Cooper intersection along Cooper to the Hunter Street intersection. Both of these extensions were not installed according to the as-builts. It is believed that these extensions were installed at a later date, as they show up in an exhibit with the City’s Urban Runoff Management Plan showing the locations of stormwater piping that are capable of carrying the 10-year developed flow. Existing Conditions Storm Sewer Mains An existing 21” Concrete Pipe Storm Sewer flows to the west in the Cooper Mall. On the east side at the Galena Street intersection, it connects to a 15” Concrete Pipe flowing to the north and a 21” Concrete Pipe flowing to the west. At this junction, there is no manhole, but only a tee. The line to the east collects street drainage along Cooper Avenue. From the 1976 plans, it appears to have been extended approximately 100’ to the east to a manhole and an inlet, and then stubbed out and plugged for future expansion. In the section between Galena and Mill Street, this line has one inlet where it connects with the Mill Street Storm Sewer. An existing 15” Concrete Pipe Storm Sewer flows to the west in the Hyman Mall. On the east side at the Galena Street intersection, a storm manhole connects to two laterals from inlets on the east P28VII.A. 20 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 12 of 27 side of the Galena / Hyman intersection. According to the 1976 plans, from this manhole flowing downstream to the west, the pipe is curved to the north, until it picks up its westerly alignment heading to the Mill Street storm sewer. An inline inlet is located on the west side of Hyman just before the line discharges into the Mill Street storm sewer. This inlet follows along the mall’s “V” shaped drainage pan on the south side of the trees and open ditches in the center of the mall. The Mill Street storm sewer flows from the south to north and is located east of the center of the Mill Street Mall. The line sizing is a 24” RCP storm sewer from the south to Cooper, then it is a 36” RCP from Cooper to Hyman, and is upsized to a 60” RCP heading to the north, as it flows through the fountain. At the Cooper / Mill intersection, the Cooper storm sewer connects with an inlet structure that lines up with the south “V” shaped drainage pan. Approximately 35’ to the north, another inlet intercepts the surface runoff of the north “V” shaped drai nage pan. At the alleyway between Cooper and Hyman, a 12” concrete pipe runs to an inlet lateral on the north side of the alleyway, capturing sheet flow drainage. Manholes and Inlets There are existing inlets located at the intersections of the alley south of Cooper and Galena that feed into the storm sewer running north to the Cooper/Galena intersection. At this intersection, there are existing inlets that connect and flow to the west into the Mill Street storm sewer. An inlet exists at the junction of the Cooper Street and Mill Street connection. An inlet exists on the west side of the alley between Cooper and Hyman that connects into the Mill Street storm sewer. This alley inlet collects surface runoff through a 12” pipe from the alley and roof drainage. Inlets located at the Hyman/Galena intersection flow to the west in a 15” concrete pipe into the Mill Street storm sewer. An inlet exists on this line before it connects into the Mill Street line. Another inlet is located to the north that lines up with the surface “V” shaped drainage pan on Hyman Street. Connections to Wheeler Ditch System According to the as-builts, the Wheeler Ditch system appears to be separated from the storm sewer system in the area. Roof Drains, Area Drains, and Trench Drains The majority of existing roofs within the mall appear to drain to surface level within the alleys. A couple of exceptions appear to drain onto the surface Mill Street and 2 others appear to tie directly into the Storm Sewer main in Mill Street. Each branch of the mall storm sewer terminates within the Galena Street intersections. Three area drains exist in the intersection of both Hyman Avenue and the alleyway south of Cooper Avenue. Two area drains serve the drainage within the intersection of Cooper Avenue. Two trench drains were located during surveying and site observations. One serves the westernmost building entrance along the south side of Cooper Avenue. The other serves the west side of the public restrooms located at the intersection of Mill Street and Cooper Avenue. Water Quality/Detention No water quality or detention structures exist within the mall. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 13 of 27 Survey/Location Accuracy Potholes One pothole was completed to verify the location of the tee at the Cooper/Galena street intersection. Video Surveillance The City has performed video surveillance in May 2017 on the Mill Street, Cooper Street, and Hyman Street storm sewers. On Mill Street, the video started near Rubey Park to the dancing fountain. The pipe is reported to be in excellent condition. There was one observed roof drain connected to the storm sewer. The pipe was marked as being placed in 1989. The Hyman Street storm sewer was videoed from Galena Street to the west. The pipe was in good working condition, with a few roots that were protruding on the western side of the pipe. No roof drains were observed on this stretch of pipe. The Cooper Street storm sewer was filled with mud and the City was unable to complete the video. The City speculates that this pipe was not in good working condition. Storm Sewer Mains The locations of the storm sewer mains are identified from the observation of each manhole or inlet and the depths to the pipe invert from the rim. There are some connections that are a tee connection and do not have an elevation associated with their location. Some of these locations can be calculated from the other sewer lines that have elevation information, and the pothole location mentioned above provides the depth information on the Cooper Street line. Manhole and Inlet Rim and Invert Elevations Manholes labeled “Storm” and Inlets are surveyed from the ground, and and invert elevations are measured from removing the manhole lid or inlet. Some of the manholes are mislabeled. Existing Deficiencies Performance of Existing System All of the described infrastructure generally functions well and is in good condition. The exception being the 21” main that runs within Cooper Avenue. Inspection services of this pipe were not able to complete their efforts due to sediment blockages. Cleaning efforts and re-inspection are recommended in order to produce recommendations for rehabilitation or replacement of this section. While the pipe in Hyman Avenue was reported to be in good working condition, there were some root infiltration observed during the inspection process. It is recommended that this section of pipe be maintained with mechanical root cutting augers and routine inspections. Other Utility Conflicts Only minor conflicts exist with other shallow utilities in the mall. Several water services cross underneath the storm sewers within Cooper and Hyman Avenues. P29VII.A. 21 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 14 of 27 Existing Site Constraints It appears all main lines run within the dripline boundaries of mature trees within the major walking streets of the mall. As such, root infiltration into these shallow-buried mains should be expected. The existence of the trees will also inhibit replacement of these lines. PROPOSED Design Storm Demands Future Conditions The impact of future conditions will be determined once the proposed concepts have been finalized Proposed Infrastructure Storm Sewer Mains Storm Sewer Mains to Remain in Place It is likely undesirable to replace large sections of storm mains due to the removal of existing trees and the replacement of brick paving that would be necessary. Rehabilitation of the existing pipes in place is an attractive solution to mitigate those issues. As the system is in generally good shape, only work on the mains within Hyman and Cooper Avenues is recommended. The root infiltration issue in Hyman can be taken care of through mechanical removal and inspection at regular intervals. If root remove becomes a frequent issue in the future, cured-in-place lining of the main can be used to inhibit growth as it would effectively remove the joints where roots typically find their way in. The main within Cooper Avenue requires further cleaning and inspection before recommendations for rehabilitation or replacement can be made. Proposed Storm Sewer Mains to be Added As the system is generally in good shape, the only main that could be recommended to be replaced would be the one within Cooper Avenue. Further cleaning and inspection of this section of pipe is required before recommendations for rehabilitation or replacement can be made. If this pipe is found to be penetrated with roots from vegetation and cannot be cleaned, the replacement of a new line in place will cause impact to the vegetation. The abandonment of this line and the installation of a new parallel storm sewer located to the south may be a viable option, providing suitable separation from the existing vegetation. If the line can be successfully cleaned, an enhanced maintenance program may minimize any future clogging issues. Storm Sewer Manholes / Inlets Storm Sewer Manholes / Inlets to Remain in Place Depending on the routing of the stormwater flows on the mall, a majority of the stormwater manholes and inlets can remain in place. These include the inlets at both intersections on Galena with the Cooper and Hyman malls, where there are area inlets within the road network. The inlets on the west sides of both Cooper and Hyman malls that connect to the Mill Street Storm sewer can remain in place if there is a desire to continue the current drainage pattern in the “V” shaped pan that drains surface drainage. The same follows for the inlets on the Mill Street mall that gather surface drainage. The alleyway between the malls also has an inlet that gathers runoff from the alley, as well as surface drainage that is transferred from the roof drains. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 15 of 27 Proposed Storm Sewer Manholes / Inlets to be Added Depending upon the configuration of proposed stormwater treatment and roof drain routing, additional inlets could be added within the alleyways to promote better drainage and minimize surface runoff in these areas. If a utility corridor is proposed in the alley, storm drainage could also be routed internally in the corridor, with the option to connect existing and future roof drains to the alley storm sewer in the utility corridor. A requirement would be for all future development to have their roof drains routed to the alleyway and utility corridor. Depending upon the discharge requirements at the point of connection to the storm system, water quality and sediment standards may need to be met prior to discharge, or, the City could provide these treatment standards on the utility corridor sewerline. Additionally, because both of the existing storm drains are located on the south sides of the Copper and Hyman malls, properties that are located on the south side could tie subsurface roof drain s into the existing sewer lines, rather than sheet flowing onto the mall. This would require the installation of new storm roof drain services that could be disruptive to existing vegetation. The depth to the existing storm water mains is not excessively deep in the Hyman mall; according to the cross sections about 12 inches of cover would allow for a shallow roof drain connection. The Cooper Street storm sewer is substantially deeper according to the cross sections, at about 5-6 feet of depth, and therefore may have more disturbance for existing vegetation. Properties on the north side may still prefer to tie into the storm sewer main in the alley or utility corridor, as otherwise a new roof drain would need to cross the center mall area and would substanti ally disturb vegetation. Storm Water Mitigations and Treatment Best Management Practices Best management practices for storm water mitigation and treatment can be followed on the mall. Presently, the existing storm system has conveyance without any water quality or sediment treatment. Any combination of these practices would be a benefit to the stormwater from the mall, and would meet the goals and requirements identified within the City’s Urban Runoff Management Plan. Water Quality Capture Volume Water Quality Capture Volume can be realized within the mall areas by using a variety of methods, such as permeable pavers with connections to the storm sewer along the existing mall corridors, the use of the vegetation areas as biofiltration areas, sub -surface BMPs such as sand filtration vaults or silva cells. Sediment Removal Inlets within the mall can be replaced with inlet boxes containing sumps that have the ability to capture sediments. These would require routine maintenance to avoid overloading. Another option would be to install a water quality treatment structure at the ultimate discharge point of the storm system. This would reduce the number of maintenance locations and have the potential to remove other particulates as well. Peak Flow Attenuation P30VII.A. 22 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 16 of 27 Any of the BMPs listed above that cause the runoff to delay sheet surface or pipe flow into the storm sewer network will attenuate the peak flow that is realized. This has the benefit of increasing the overall hydraulic capacity of the City’s storm sewer network. It also has the benefit of allowing other storm flows within the City’s system to be conveyed before the mall’s stormwater is conveyed, effectively “sharing” the overall capacity of the storm sewer network. City of Aspen Urban Runoff Management Plan All proposed improvements will meet the requirements and goals of the City of Aspen Urban Runoff Management Plan. ELECTRIC EXISTING History of Installation Pending; additional coordination with City of Aspen Electric Department is required. System Upgrades and Updates Pending; additional coordination with City of Aspen Electric Department is required. Existing Conditions Primary Conduits and Corridors The primary electrical distribution electrical infrastructure is generally limited to the east-west alleys between Cooper Avenue/Hyman Avenue and Hyman Avenue/E. Hopkins Avenue. A primary electric line also runs east-west along the south side of Wagner Park, north to S. Mill Street, and then east across the northern side of Ruby Park. The existing primary conduits cross the APM at one location on Mill Street Mall between the north- east corner of Wagner Park and the alley between Cooper Avenue/Hyman Avenue. Transformers Two to three transformers are located in each of the alleys and on the north side of Wagner Pa rk. The transformer capacities generally range from 225 kVA to 750 kVA. Secondary Conduits, Lighting, and other Appurtenances Secondary conduits and lighting circuits are routed throughout the APM. The main source of secondary power for the APM originates from Utility fed street lights, the Information Kiosk Service, and the Restroom Facility service. Convenience receptacles are located on various streetlights and are powered from the street lighting circuits. Survey/Location Accuracy The electrical utilities were located by the private utility locators using available system maps and were marked in the field for surveying. No depth information was available for the marked locates. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 17 of 27 Potholes Five locations were identified on the pothole map and were successfully potholed in May 2017. Depth information for each pothole has been reflected on the cross sections. A photograph accommodates each of the potholes, and is included in the Appendix. Primary Conduits and Corridors Primary conduits were located within the alleys with radiolocation equipment. However, there do exist some gaps where additional survey and location information is pending. Transformers Transformers are located in the alleys and are visible above ground. Electrical Services Some of the electrical services have been located in the alleys, and are shown on the utility exhibit. There is a possibility that some of the services are not shown, and may be difficult to accurately locate. Secondary Conduits, Lighting, and other Appurtenances Secondary conduits and lighting were located and surveyed in the Cooper, Hyman, Galena, and Mill mall areas, and are shown on the attached utility exhibit. Existing Deficiencies Performance of Existing System An electrical study was performed in 2013 and it was noted that the secondary electrical service throughout the mall and at Wagner Park is greatly undersized. Events at the park often require additional generators. Street vendors along APM are consistently utilizing extension cords from local businesses or connecting to the street lighting receptacles. This condition has resulted in tripping hazards and subsequent overloading of street lighting circuits causing outages. The study also noted that the additional upgrades including Utility Transformer replacements would be necessary to provide additional secondary power to this area. Other Utility Conflicts The main electric infrastructure is co-located with the other dry/wet utilities in the alleys. Modifications to infrastructure in the alleys will require a coordinated effort and impact to multiple utilities/agencies. Site Conflicts Secondary conduits and lighting circuits are routed throughout the APM. Modifications or additions to these circuits and/or capacity will require construction within the APM. An existing transformer in the alley between Hyman Avenue and Copper Avenue (east of the APM) does not have sufficient working clearance as required by the City of Aspen Electrical Department. It is directly facing a wall and an existing gas meter. P31VII.A. 23 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 18 of 27 Electric meters and disconnects are generally located in groups within the alleys. Many of these locations are in alcoves and co-located with other utilities such as gas, fiber, and cable. Direct access to equipment is often blocked via dumpsters, storage, and/or p arked vehicles. Existing Site Constraints The alleys are very congested and offer limited space to accommodate multiple wet/dry utilities and associated downstream distribution and meters. PROPOSED Electrical Demands Future Conditions Additional electrical demand is anticipated in the APM. Anticipated loads include, but are not limited to, snow melt systems, potentially taller buildings per zoning allowances, Wagner park events and additional street vendors/functions within the mall. Estimated future electrical loading is pending definition of design concepts. Proposed Infrastructure Conduits and Corridors New Conduits and Transformers Additional conduits and transformers would be pending depending upon the proposed electrical loads. Transformers would be set in the alleyways, and the locations try to favor the shortest secondary service runs practical while balancing the number of transformers on the system. Corridors It is proposed to keep the electrical infrastructure in the alleys to serve the buildin gs. Location of the electrical system with a utility corridor would be feasible, as the number and size of conduits required would be recommended by the City of Aspen Electrical Department. Depending upon the design of the utility corridor, conduits could be strategically routed to both existing and proposed transformers to provide the shortest route of coverage, as well as provide connectivity to the existing customers. Design Standards Proposed concepts shall follow the City of Aspen Electrical Department Design Standards and Specifications. FIBER OPTIC / TELEPHONE EXISTING History of Installation The infrastructure in the area dates to approximately 1976. System Upgrades and Updates No upgrades or updates are currently planned. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 19 of 27 Existing Conditions Conduits and Corridors A main fiber optic/telephone, concrete encased duct bank runs below the APM on S. Mill St. This duct bank contains (10) conduits at Hyman Avenue and route south. From this duct bank (2) conduits are routed to into the alley between Hyman Avenue and Cooper Avenue; (1) conduit is for fiber optic and (1) conduit is for telephone. (2) conduits are also routed into the alley between Cooper Avenue and Ruby Park. A manhole/vault is located in the APM near the northwest corner of Wagner Park. Pedestals Fiber optic and telephone services are located within the alleys. Survey/Location Accuracy The fiber optic/telephone utilities were located by the private utility locators using available system maps and were marked in the field for surveying. No depth information was available for the marked locates. Potholes Three locations were identified on the pothole map and were successfully potholed in May 2017. Depth information for each pothole has been reflected on the cross sections. A photograph accommodates each of the potholes, and is included in the Appendix. Conduits and Corridors Fiber Optic and Telephone conduits were located within the mall extents with radiolocation equipment. However, there do exist some gaps where additional survey and location information is pending. Pedestals Pedestals are mainly located in the alleys and are above ground, and have been surveyed. Existing Deficiencies Performance of Existing System The existing system is currently sufficient. Other Utility Conflicts Infrastructure is co-located with the other dry/wet utilities in the alleys. Modifications to infrastructure in the alleys will require a coordinated effort and impact to multiple utilities/agencies. Existing Site Constraints The alleys are very congested and offer limited space to accommodate multiple wet/dry utilities and associated downstream distribution and meters. PROPOSED P32VII.A. 24 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 20 of 27 Telecommunication Demands Pending; additional coordination with Centurylink is required. Proposed Infrastructure Conduits and Corridors New Conduits It is presently not known how many new conduits Centurylink will need at this time. Corridors It is proposed to keep the telecommunications infrastructure in the alleys to serve the buildings. Location of the telecommunications system with a utility corridor would be feasible, as the number and size of conduits required would be recommended by Centurylink. Depending upon the design of the utility corridor, pedestals could be strategically located to provide the shortest route of coverage, as well as provide connectivity to the existing customers. Design Standards Proposed concepts shall follow Centurylink Design Standards and Specifications. GAS EXISTING History of Installation Natural gas piping in the pedestrian mall area is believed to have been installed in the 1960’s. The distribution in the area consists of rigid steel piping. System Upgrades and Updates No information regarding recent upgrades in the pedestrian mall area are known at this time. Existing Conditions Gas Mains The pedestrian mall area is served by a medium pressure distribution system consisting of 40 psi of pressurization. Gas Meters and Service Connections ¾”-1” service connections with pressure reducing valves at the meter can be found in the pedestrian mall area. Survey/Location Accuracy Gas utilities were located by the private utility locators using available system maps and were marked in the field for surveying. No depth information was available for the marked locates. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 21 of 27 Potholes Six locations were identified on the pothole map and were successfully potholed in May 2017. Depth information for each pothole has been reflected on the cross sections. A photograph accommodates each of the potholes, and is included in the Appendix. Gas Mains Gas mains were located within the alleys with radiolocation equipment. However, there do exist some gaps where additional survey and location information is pending. Gas Meters and Service Connections Some of the gas services have been located in the alleys, and are shown on the utili ty exhibit. There is a possibility that some of the services are not shown. Existing Deficiencies Performance of Existing System There are no known deficiencies in the existing system. Other Utility Conflicts There are no known conflicts with other utilities. Site Conflicts There are no known site conflicts Existing Site Constraints The existing site constraints are minimal, with the exception of the other shallow and deep utilities in the alleys. The sanitary sewer is directly below the gas in the the alleyways, as well as close and crossing many of the dry utilities. PROPOSED Gas Usage Demands Existing Conditions Based on building function and square footages taken from the City of Aspen GIS map, the current natural gas usage was estimated for each property. The usage for the study area is estimated to be 23,000 MBH. Future Conditions Estimated future natural gas demand is pending definition of design concepts Proposed Infrastructure Gas Mains Gas mains are proposed to be located in the alleyways. Depending on the location of the other utilities in the alleyway, the gas may be moved to accommodate these needs. If a utility corridor is proposed, the gas will not be located within this corridor structure, as any leaks into free air space P33VII.A. 25 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 22 of 27 could produce dangerous explosive conditions. Therefore, the gas mains will be buried in a shallow trench outside of a utility corridor. Gas Meters and Service Connections Gas meters are proposed to be located on the back side of buildings in the alley. Service connections to the gas main will run from the services directly to the gas main. In the event of a utility corridor, the routing of gas services will need to be closely coordinated especially with respect to the elevations of the utility corridor to insure that the services can successfully be routed without having to penetrate the corridor structure. Design Standards Proposed concepts shall follow the direction of Black Hills Energy Design Standards and Specifications CABLE EXISTING History of Installation The cable infrastructure is assumed to be more than 25 years old. This estimate is based on knowledge of modifications to the infrastructure in this area from Michael Johnson of Comcast. System Upgrades and Updates Two (2) 2” conduits were installed approximately 2 years ago along the north side of Wagner Park. These conduits originate from S. Monarch Street and route to the north-east corner of Wagner park near the existing electrical transformer at S. Mill Street. Existing Conditions Conduits and Corridors The cable infrastructure around the APM is mostly limited to the east-west alleys between Cooper Avenue/Hyman Avenue and Hyman Avenue/E. Hopkins Avenue. The existing cable conduits cross the APM at one location on Mill Street Mall between the north - east corner of Wagner Park and the alley between Cooper Avenue/Hyman Avenue. This conduit routes below the existing playground and below the north section of Wagner Park. This particular conduit in the past has been cut in multiple locations at the ballfield and playground. Pedestals Cable pedestals are located in the alleyways on both sides. Survey/Location Accuracy The cable utilities were located by the private utility locators using available system maps and were marked in the field for surveying. No depth information was available for the marked locates. Potholes No pothole locations were identified for the cable utilities. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 23 of 27 Conduits and Corridors Fiber Optic and Telephone conduits were located within the mall extents with radiolocation equipment. However, there do exist some gaps where additional survey and location information is pending, such as the line that is located on the north and under the north side of Wagner Park. Pedestals Pedestals are mainly located in the alleys and are above ground, and have been surveyed. Existing Deficiencies Performance of Existing System It is not known if the existing system has any deficiencies. Other Utility Conflicts The main infrastructure is co-located with the other dry/wet utilities in the alleys. Modifications to infrastructure in the alleys will require a coordinated effort and impact to multiple utilities/agencies. Site Conflicts The existing conduit below Wagner Park and the adjacent playground on Mill Street is at risk of being pierced by activities at the park (tent stakes). Existing Site Constraints The alleys are very congested and offer limited space to accommodate multiple wet/dry utilities and associated downstream distribution. PROPOSED Cable/Telecommunication Demands Pending; additional coordination with Comcast is required. Proposed Infrastructure Conduits and Corridors New Conduits It is proposed to extend (2) 2” conduits from north of Wagner Park across the APM at Mill Street to the alley between Cooper Avenue/Hyman Avenue. Corridors It is proposed to keep the cable infrastructure in the alleys to serve the buildings. Location of the cable system with a utility corridor would be feasible, as the number and size of conduits required would be recommended by Comcast. Depending upon the design of the utility corridor, pedestals could be strategically located to provide the shortest route of coverage, as well as provide connectivity to the existing customers. P34VII.A. 26 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 24 of 27 Design Standards Proposed concepts shall follow Comcast Design Standards and Specifications. WHEELER DITCH EXISTING History of Installation The piping of the Wheeler Ditch in the mall extents dates to the 1976 construction. System Upgrades and Updates The splitter box vault located at the Hyman / Galena intersection was rebuilt approximately 20 y ears ago, per discussions with City of Aspen staff. It is not known if there have been any other upgrades or updates since the 1970’s. Existing Conditions Ditch Vaults The Wheeler Ditch is piped in Cooper Street to the east of the mall, and it flows in a series of pipes to the west. This existing 18” CMP ditch line that flows to the west in Cooper flows into the first of two “Splitter Box” vaults which are located at the Cooper/Galena and Hyman/Galena intersections. Per the as-builts, Splitter Box B is located at the west side of the Cooper/Galena intersection, and has the inflow from the Cooper Street Wheeler Ditch line. It has two 12” concrete pipe outflows that feed the Cooper Street open ditches. It also has an 18” CMP line that flows to the north in Galena Street to Splitter Box A. Splitter Box A is located at the west side of the Hyman/Galena intersection, and receives the inflow from Splitter Box B. Splitter Box B has two 12” concrete pipe outflows that feed the Hyman Street open ditches. Open Ditches Both the Cooper and Hyman Street malls have two parallel open channel ditches that meander through the trees and vegetation. At the start on the east side, two 12” concrete pipes convey ditch water from the splitter boxes. Each ditch channel varies in width from about 1 to 2 feet wide, and depth varies from about 1 to 2 feet deep. Per the as-built cross sections, a 6” thick clay liner with filter fabric keeps the ditch water from seeping into the subsurface. On the west side of the ditches, small concrete headwalls contain a 12” pipe that routes the south side ditch to the north, and then the north ditch and the pipe from the south is routed to the west into ditch manholes. Ditch Manholes A ditch manhole adjacent to the Cooper mall collects the flow from the open ditches in Cooper, and this flow is routed to the north in Mill Street in a 12” concrete pipe. The pipe flows through the dancing fountain and ties into a manhole slightly north of the fountain at the Hyman/Mill intersection. This manhole also receives the return flows from the Hyman open ditches. Flows continue to the north in Mill Street. It is not known where the ditch flows go past the mall extents. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 25 of 27 Connections to the Storm Sewer System The only connection point with the storm sewer system exists within the dancing fountain. It is understood that the fountain operates with Wheeler Ditch water, and receives this water through the 12” concrete pipe between the aforementioned ditch manholes. Based upon the as -builts, overflow from the fountain will drain into the storm sewer system. Survey/Location Accuracy Potholes One pothole was performed to locate the incoming 18” CMP into Splitter Box B at the Cooper / Galena intersection. Video Surveillance No video surveillance has been performed on the ditch mains. Ditch Mains Some of the ditch main lines have been located where there are manholes that connect them. Where the mains connect between the vaults, these have not been located to date due to the necessity of removal of bricks to access the vaults. Open Ditches The open ditches in both Cooper and Hyman mall areas have been surveyed with sufficient detail to accurately build a top surface and create a centerline profile. The data points provide a typical section showing survey data on each side of the bottom of the ditch, as well as points at the top of the slope. Manholes and Vaults The ditch manholes are surveyed with the rims and inverts measured. Pipe locations in and out of the manhole, as well as types and materials have been identified. The splitter box vaults are located under the bricks and their exact location has not been surveyed, as well as the pipe invert elevations coming into and exiting the vaults, with the exception of the potholed pipe mentioned above. Existing Deficiencies Performance of Existing System City staff has reported that the north feeder pipe to the Cooper mall open ditch was cracked on the top, and has a patch over it, that appears to be performing well. From inspection of the system, ditch water flows within all of the four open ditches. It is not known how much, if any, control exists to regulate and split flows without access to the vaults. From the as-builts, splitter box B has a series of baffles, and weirs that proportion flow to the two Cooper Street open ditches, and route flow to splitter box A north to Hyman. Each splitter box has the capability to have weirs set at heights to proportion flow, however, these weirs are not easily adjusted nor can they be easily accessed without removal of bricks and the vault grating. P35VII.A. 27 Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 26 of 27 Therefore, it is not known how much proportioned flow or shutoff control that can be readily accessed from the splitter box vaults. Other Utility Conflicts The ditch system does not have many conflicts along its route from each splitter box to the open ditches in the Cooper and Hyman malls. The splitter box connection line is located on the west side of Galena Street, and the 18” CMP between the splitter boxes appears to be located to the west of the existing water line in Galena. On the west side wh ere the ditches are routed in pipes to the ditch manholes, they cross over the potable water, storm sewer, and sanitary sewer. The ditch line running in Mill Street is located to the west of the Mill Street storm sewer, and in places may share a common trench. Site Conflicts The location of the splitter box vaults do not provide an easy way to maintain, clean, and adjust the flow settings. Other than the difficulty of accessing the vaults, the open ditches do not cause any site conflicts other than having to have an uninterrupted conveyance path. PROPOSED Ditch Flow Demands Existing Conditions The Wheeler Ditch is owned by the City of Aspen, is a senior right, and has a decreed water right of 10 cfs. The highest demand for the ditch was in June 2015, where 470 acre-ft was reported, which converts to 7.78cfs. It is not belived that this amount is routed in its entirety to the mall. The incoming 18” CMP line has a capacity of approximately 4 cfs running full, and the 12” concrete pipe lines in Mill Street have a capacity of approximately 5-6 cfs running full. Therefore, this represents the maximum amount of flow that can be delivered without changing pipe sizes. Each open ditch has an approximate capacity of 1 cfs. Future Conditions It is not known what future conditions would be for the ditch flow demands. As the ditch water serves as an aesthetic character for the mall, if the open ditches are kept the same size, then no additional flow would be necessary. There may be a desire to change the source water for the dancing fountain to potable water from ditch water. If that situation were to occur, less ditch water may be needed. Additionally, the City owns the Little Nell well which has infrastructure in Durant to the south of the mall. This may become a viable source for mall uses in the future. An extension to Durant would be required to utilize this resource. Proposed Infrastructure Ditch Mains Ditch Mains to Remain in Place The existing ditch mains can be left in place if there is a desire to continue to provide water to the open ditches. Aspen Pedestrian Mall Memorandum of Utility Opportunities and Constraints September 12, 2017 Page 27 of 27 Ditch Mains to be Added The existing ditch main lines are sufficient to carry the existing ditch flows, unless there is a desire to add additional ditch uses in the mall, such as more or larger open channels. In this case, the existing mains may need to be removed and replaced for additional capacity. The mains would also need to be examined outside of the mall extent area, as these mains may also be affected. Open Ditches Ditches to Remain in Place The existing open ditches in the Cooper and Hyman malls support the trees and vegetation that surround them. Modification or substantial changes to the open ditches may have adverse effects on the surrounding vegetation. Proposed Open Ditches to be Added If additional open ditches, or modifications for increasing or decreasing the sizes of the existing ditches are proposed, the vaults may need to be modified accordingly for flow proportioning, routing, and additional capacity. Manholes and Vaults Existing Manholes and Vaults to Remain in Place The existing splitter box vaults and manholes can be left in place, as they appear to be functional. As mentioned above, the splitter box vaults do not offer the convenience for maintenance, cleaning, and flow control Proposed Manholes and Vaults to be Added If additional open ditches, or other ditch water features are proposed in areas of the mall that are not easily served by the existing manholes, vaults, and mains, additional manholes and/or vaults may need to be added. Since the ditch water system works off of gravity fed mains, the elevation and topography is critical for any proposed features. Pumping systems could be added, but represent additional expenses, maintenance requirements, and complexity. City of Aspen Urban Runoff Management Plan Any ditch system modifications will meet the requirements and goals of the City of Aspen Urban Runoff Management Plan if applicable. SUMMARY The major utility systems on the mall are discussed including the history of the utilities, existing conditions, method and accuracy of surveying the utilities, known existing deficiencies, site constraints, and proposed infrastructure. Discussion includes variable options for each utility including rehabilitation, relocation and/or replacement. Each utility was analyzed for the feasibility of each of the above options, and discussed in a narrative. At the time of this memorandum, the surveying efforts are ongoing; however, the majority of the analysis imparted in the memorandum would not be anticipated to change substantially based upon the final surveying results. This document will form the basis of future utility design concepts for the project. P36VII.A. 28 UTILITY CONCEPT | PARALLEL WATER LINES UTILITY CONCEPT AFIG A REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.ASPEN PEDESTRIAN MALLSHEET NO. 2652c 10/18/2017 GWS DAD DAD Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver P37VII.A. 29 TREE IMPACTS TREES MOST IMPACTED BY PROPOSED INFRASTRUCTUREP38 VII.A. 30 UTILITY CONCEPT | CENTER WATER LINES UTILITY CONCEPT BFIG B REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.ASPEN PEDESTRIAN MALLSHEET NO. 2652c 10/18/2017 GWS DAD DAD Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver P39VII.A. 31 TREE IMPACTS TREES MOST IMPACTED BY PROPOSED INFRASTRUCTUREP40 VII.A. 32 UTILITY CONCEPT | UTILIDOR UTILITY CONCEPT CFIG C REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.ASPEN PEDESTRIAN MALLSHEET NO. 2652c 10/18/2017 GWS DAD DAD Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver P41VII.A. 33 TREE IMPACTS TREES MOST IMPACTED BY PROPOSED INFRASTRUCTUREP42 VII.A. 34 i scale 1”=100’ 0’50’100’200’ scale 1”=100’N ALLEY WAGNER PARK HYMAN AVENUEMILL STREETALLEY COOPER AVENUES GALENA STREETPEDESTRIAN ALLEY 1 2 3 4 5 6 87 9 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 27 28 29 30 31 32 33 34 35 36 38 39 40 26 22 37 41 42 43 44 45 46 47 48 49 50 51 52 53 54 INFO KIOSK M2 M1 M3 M5 M6 M7 M8 EXAMPLE LOCATION OF BELOW GRADE BOILER ROOM (~24'X12') BATHROOM GROUP BLDG OUTLINE OF SNOW MELT SYSTEM (TYP.) ESTIMATED OUTLINE OF POTENTIAL GEOTHERMAL BORE FIELD - AWAITING GEOTECH REPORT M MAXSON ENGINEERING M11 M9 12" W (~2300 GPM @ 7 FT/S) 12" W (~2300 GPM @ 7 FT/S) (E) 6" W UNDERSIZED FOR FUTURE 8" W (~1100 GPM @ 7 FT/S) 8" SS (ESTIMATED 39,000 GPD FROM BLOCK) 12" SS (ESTIMATED 39,000 GPD FROM BLOCK) 12" SS M4 KEYED NOTES 1. NEED UPSTREAM CONNECTIONS INFO TO DETERMINE IF (E) 12" SS IS ADEQUATE. 2. NEED UPSTREAM CONNECTIONS INFO TO DETERMINE IF (E) 18" SS IS ADEQUATE. 1 6" NG M10 18" SS UTILITY LEGEND WATER SANITARY SEWER NATURAL GAS 8" SS (ESTIMATED 39,000 GPD FROM BLOCK) 2 8" SS (ESTIMATED 39,000 GPD FROM BLOCK) 2017-10-19P43VII.A. 35 The City of AspenAspen Pedestrian Mall October 3, 2017ME#17037 Mechanical Block Estimated Building Area (Sq. Ft.) [1,2] Total Estimated Natural Gas (MBH) [3] Total Estimated Domestic Water (GPD) Total Estimated Sanitary Sewer (GPD) Notes M1 162,840.00 8,956 38,601 38,601 M2 81,420.00 4,478 19,301 19,301 M3 162,840.00 8,956 38,601 38,601 M4 162,840.00 8,956 38,601 38,601 M5 81,420.00 4,478 19,301 19,301 M6 162,840.00 8,956 38,601 38,601 M7 162,840.00 8,956 38,601 38,601 M8 162,840.00 8,956 38,601 38,601 TOTAL:62,693 270,209 270,209 Assumptions: 1 - Assumes lots be built out to (3) stories. 2 - Square footages based on lot size from COA GIS Mapping. 3 - 55 BTUH/Sq. Ft. (Comm. & Res., Bldg. Heat & Domestic Water) N. of Wagner Park 5 350 1 1750 262.5 77 Cooper Ave 5 350 2 3500 525 154 Hyman Ave 5 350 2 3500 525 154 Mill Street 10 500 1 5000 750 220 Galena Street 5 150 2 1500 225 66 Geothermal System -----1830 -536 Total: 15250 457.5 134 FUTURE MECHANICAL UTILITY LOAD SUMMARY SNOW MELT SYSTEM Area Snow Melt Width (Feet) Snow Melt Length (Feet) 1 - Initial estimates indicate Geothermal System capable of providing ~80% snow melt load, remaining load met by use of electric boiler Snow Melt Sections/ Area Total Snow Melt Area (Sq Ft) Heat Load (MBH) Heat Load (KW) P:\2017\17037 -- Aspen Pedestrian Mall\Mechanical\Calculations\Mall Buildings Info The City of AspenAspen Pedestrian Mall October 3, 2017ME#17037 Block Occupancy Type Typical Flow [1]Units Occupant Density (PPL/1000 Sq Ft) [2] Max Allowable Occupants Per Lot Total Flow (GPD) Estimated Flow (GPM) Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Unit 2 65 4494 73 3322 38601 550.0 Office 14.5 GPD/Employee 5 122 1771 38.0 Retail 10.6 GPD/Employee 15 366 3884 52.5 Restaurant 10 GPD/Person 70 1140 11399 157.5 Residential 69 GPD/Meal 2 33 2247 50.0 1661 19301 298.0 Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Meal 2 65 4494 73.0 3322 38601 550.0 Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Meal 2 65 4494 73.0 3322 38601 550.0 Office 14.5 GPD/Employee 5 122 1771 38.0 Retail 10.6 GPD/Employee 15 366 3884 52.5 Restaurant 10 GPD/Person 70 1140 11399 157.5 Residential 69 GPD/Meal 2 33 2247 50.0 1661 19301 298.0 Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Meal 2 65 4494 73.0 M1 M3 M4 M5 ESTIMATED WATER/WASTE WATER FLOW PER BLOCK M1 TOTAL M2 TOTAL M3 TOTAL M4 TOTAL M6 M2 M5 TOTAL P:\2017\17037 -- Aspen Pedestrian Mall\Mechanical\Calculations\Mall Buildings Info The City of Aspen Aspen Pedestrian Mall October 3, 2017 ME#17037 3322 38601 550.0 Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Meal 2 65 4494 73.0 3322 38601 550.0 Office 14.5 GPD/Employee 5 244 3542 57.0 Retail 10.6 GPD/Employee 15 733 7767 105.0 Restaurant 10 GPD/Person 70 2280 22798 315.0 Residential 69 GPD/Meal 2 65 4494 73.0 3322 38601 550.0 1 - Based on APSE Design Handbook Tables. 2 - Based on IMC M8 TOTAL M7 M8 M6 TOTAL M7 TOTAL P:\2017\17037 -- Aspen Pedestrian Mall\Mechanical\Calculations\Mall Buildings InfoP44 VII.A. 36 i scale 1”=100’ 0’50’100’200’ scale 1”=100’NE DURANT AVENUE ALLEY WAGNER PARK HYMAN AVENUEMILL STREETALLEY COOPER AVENUES GALENA STREETPEDESTRIAN ALLEY RUBEY PARK 1 2 3 4 5 6 87 9 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 27 28 29 30 31 32 33 34 35 36 38 39 40 26 22 37 OWNERSHIP MAP 41 42 43 44 45 46 47 48 49 50 51 52 53 54 300KVA 300KVA 300KVA 50KVA 500KV A 750KVA 225KVA 500KVA 500KVA 500KVA 500KVA 500KVA BATHROOM GROUP BLDG INFO KIOSK E2 E1 E3 225KVA 500KVA 300KVA 300KVA 750KVA 500KVA 750KVA 500KVA500KVA E4 E5 E6 E7 E8 EXISTING TRANSFORMERS (TYP) M MAXSON ENGINEERING EXAMPLE LOCATION OF BELOW GRADE BOILER ROOM (~24'X12') EXISTING TRANSFORMERS (TYP) PRIMARY ELECTRIC LINE (TYPICAL) UTILITY UPGRADES REQUIRED FOR FUTURE PROVISIONS LEGEND UTILITY SUFFICIENT PRIMARY ELECTRICAL UTILITY UPGRADES POTENTIALLY REQUIRED FOR FUTURE PROVISIONS 2017-10-19P45VII.A. 37 The City of AspenAspen Pedestrian Mall October 19, 2017ME#17037 Building Space Type Allocation Estimated Power Density (VA/Sq.Ft.) 30%19 30%25 20%50 20%10 25 kVA/Sq.Ft. Estimated Load (kVA) Electrical Block Power Source 21 E5 63 E2 134 E2 81 E2 270 E2 569 kVA Electrical Block Estimated Building Area (Sq.Ft.) Estimated Building Power (kVA) Estimated Mall/ Wagner Park Power (kVA) Estimated Future Transformer Sizing (Combined kVA) Existing Transformer Sizing (Combined kVA) Net Capacity Difference (kVA) Notes E1 162840 4104 0 1641 1500 (141) Future Building Loads E2 81420 2052 548 1369 650 (719) Future Building & Wagner Park Loads E3 162840 4104 0 1641 1225 (416) Future Building Loads E4 162840 4104 0 1641 1250 (391) Future Building Loads E5 81420 2052 21 842 300 (542) Future Building Loads E6 162840 4104 0 1641 1750 109 Future Building Loads E7 162840 4104 0 1641 1550 (91)Future Building Loads E8 162840 4104 0 1641 1025 (616) Future Building Loads Assumptions: Estimate from 2013 Electrical Study Estimate from 2013 Electrical Study Estimate from 2013 Electrical Study Power supply near Wagner Park. Refer to snow melt system table. Estimate from 2013 Electrical Study ESTIMATED BUILDING USE AND POWER DENSITY Notes Combined Utility Density: Notes Blended power density based on building space type allocation 2 - Square footages based on lot size from COA GIS Mapping. 3 - Estimated power based on projected utility densities and building use (Refer to additional tables). 4 - Existing transformer size is based on COA Electric Map. FUTURE ELECTRICAL LOAD - SUMMARY 5 - Future Utility transformer sizing assumes building usage at 40% of the total estimated load. ASPEN PEDESTRIAN MALL/WAGNER PARK ESTIMATED ELECTRICAL LOADS Space Type Office Retail Restaurant Residential Location/Load Information Kiosk Bathroom Group Snow Melt System Mall Vendor Power Wagner Park Events Total: 1 - Assumes lots can potentially be built out to (3) stories. P:\2017\17037 -- Aspen Pedestrian Mall\Mechanical\Calculations\Mall Buildings Info.xlsxP46 VII.A. 38 STORMWATER CONCEPT 1 | LID SW treatment for the mall only: o Hyman and Cooper, Mill St and Galena St Nodes: Permeable Brick Pavers • They cannot put spacers in the actual brick, but they can use separate spacers. Various construction methods allow for a permeable surface. Initial discussion with geotechnical engineer indicts an infiltration section should be feasible o Mill Street: Self-Retaining + Treating Areas, Silva Cells (DW to discuss possibility of tree well filtration with City of Aspen) o Galena Street: Silva Cells. DW to discuss possibility of tree well filtration with CoA. o Assume SD utility remains or is replaced in the same location in Hyman and Cooper, no SD improvements in the alley PERMEABLE PAVEMENT PERMEABLE PAVEMENT PERMEABLE PAVEMENT PERMEABLE PAVEMENT SILVA CELL RETENTION SYSTEM, WITH PERF. PIPE AS NEEDED TO DISTRIBUT FLOW (TYP.) ENGINEERED FIBER PLAYGROUND PERVIOUS AREA, DOES NOT ACCEPT ADDITIONAL RUNOFF POSSIBLE LOCATION OF SELF-RETAINING OR RETENTION AREA DEPENDENT ON GRADING AND LEVEL OF FERTILIZATIOIN SILVA CELL SYSTEM SILVA CELL SYSTEM 7’ WIDTH OF PERMEABLE PAVER (1:2 RUNON) PERMEABLE PAVERS MUST BE AT LOW SIDE OF THE WALK. IN ALTERNATIVE WITH SNOWMELT, EXTEND PERMEABLE PAVEMENT TO INCLUDE SNOWMELT AREA. DELINEATED WATERSHEDS ABOVE GROUND STORMWATER CONVEYANCE BELOW GROUND STORMWATER CONVEYANCE DRAINAGE FLOW DIRECTION SILVA CELL BELOW GROUND INFILTRATION IN-LINE FILTRATIONP47 VII.A. 39 STORMWATER CONCEPT 2 | LID + HYDRODYNAMIC (Treat mall and private parcels) • Hyman, Cooper, and Mill St. and Galena St. Nodes: below ground infiltration chamber o Mill Street: Self-Retaining + Treating Areas, Silva Cells o Galena Street: Silva Cells, Private Parcels: Hydrodynamic separation or media filtration o SD collection system in the alley, at the end of this SD include vault/below ground treatment . HYDRODYNAMIC SEPARATOR AND/OR MEDIA FILTER INLET AND BELOW GROUND INFILTRATION CHAMBER SILVA CELL RETENTION SYSTEM, WITH PERF. PIPE AS NEEDED TO DISTRIBUT FLOW (TYP.) ENGINEERED FIBER PLAYGROUND PERVIOUS AREA, DOES NOT ACCEPT ADDITIONAL RUNOFF POSSIBLE LOCATION OF SELF-RETAINING OR RETENTION AREA DEPENDENT ON GRADING AND LEVEL OF FERTILIZATIOIN SILVA CELL SYSTEM SILVA CELL SYSTEM INLET + BELOW GROUND INFILTRATION CHAMBER (PRETREATMENT WITHIN INLET, TBD) INLET AND BELOW GROUND INFILTRATION CHAMBER (P) SD; LIKELY CAN NOT BE THE SAME SD WHICH CONNECTS GALENA ST AND MILL ST DRAINAGE NETWORK HYDRODYNAMIC SEPARATOR AND/OR MEDIA FILTER DELINEATED WATERSHEDS ABOVE GROUND STORMWATER CONVEYANCE BELOW GROUND STORMWATER CONVEYANCE DRAINAGE FLOW DIRECTION SILVA CELL BELOW GROUND INFILTRATION IN-LINE FILTRATIONP48 VII.A. 40 STORMWATER CONCEPT 3 | MALL + PRIVATE LID (Treat mall with LID, treat private parcels with hydrodynamic separator) o Hyman and Cooper, Mill St. and Galena St. Nodes: Permeable pavement o Mill Street: Self-Retaining + Treating Areas, Silva Cells o Galena Street: Silva Cells • Private Parcels: Silva Cells, High-Rate Tree Well Filtration DELINEATED WATERSHEDS ABOVE GROUND STORMWATER CONVEYANCE BELOW GROUND STORMWATER CONVEYANCE DRAINAGE FLOW DIRECTION SILVA CELL BELOW GROUND INFILTRATION IN-LINE FILTRATION PERMEABLE PAVEMENT PERMEABLE PAVEMENT PERMEABLE PAVEMENT PERMEABLE PAVEMENT SILVA CELL RETENTION SYSTEM, WITH PERF. PIPE AS NEEDED TO DISTRIBUT FLOW (TYP.) ENGINEERED FIBER PLAYGROUND PERVIOUS AREA, DOES NOT ACCEPT ADDITIONAL RUNOFF POSSIBLE LOCATION OF SELF-RETAINING OR RETENTION AREA DEPENDENT ON GRADING AND LEVEL OF FERTILIZATIOIN SILVA CELL SYSTEM SILVA CELL SYSTEM 7’ WIDTH OF PERMEABLE PAVER (1:2 RUNON) PERMEABLE PAVERS MUST BE AT LOW SIDE OF THE WALK. IN ALTERNATIVE WITH SNOWMELT, EXTEND PERMEABLE PAVEMENT TO INCLUDE SNOWMELT AREA. INSTALL NEW SHALLOW SD OR BOX CULVERT* * ALT. MAY BE POSSIBLE TO DRAIN ALL ROOF AREA TO PERMEABLE PAVEMENT WITHIN COOPER. WOULD NEED TO BE PAIRED WITH SNOWMELT ALONG BUILDING, PERMEABLE PAVEMENT WOULD STRETCH FROM BUILDING TO SWALE. DURING REDEVELOPMENT CONVERT FROM CONVEYING STORM RUNOFF TO SEWER 5’ X 9.5’ FOOTPRINT, 4’ X 4’ TREE GRATE WITHIN LANDSCAPED AREA ALT: DRAIN ALL PRIVATE PARCELS TO SILVA CELLS WITHIN MILL ST (FEASABILITY MUST BE CONFIRMED BASE ON GRADING) VALLEY GUTTER WITH BOX CULVERT TO KEEP RUNOFF AS SHALLOW AS POSSIBLE UTILIZE EXISTING FLOW LINE (PREFERRED) ALT 1: INSTALL A SHALLOW 12” SD ENCASED IN CONCRETE ALT 2: A SHALLOW BOX CULVERT SPLIT FLOW TO EACH SILVA CELL 20,430 sfP49 VII.A. 41 RECOMMENDED STORMWATER INTERVENTIONS P50VII.A. 42 SLOPE ANALYSIS EXISTING SLOPE ANALYSIS MAPEXB REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.ASPEN PEDESTRIAN MALLSHEET NO. 2652c SEPTEMBER 2017 GWS DAD DAD Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver P51VII.A. 43 APPROACHES TO ACCESSIBILITY Within the limit of work, all surfaces will be rebuilt to ADA codes to the greatest extent possible within grading constraints. Detailed grading studies will be developed in these areas. This includes the bridges that cross the stream courses, along with the middle aisle of the both Hyman and Cooper. Accessibility will be improved on the stretches connecting Mill and Galena to Rubey Park Transit. Future detailed grading studies will test preservation of the Hyman and Cooper brick rolled curbs. This will change the gutter slopes before tying back into the existing system. Within the limit of work, all surfaces will be rebuilt to ADA codes to the greatest extent possible within grading constraints. Detailed grading studies will be developed in these areas. This includes the bridges that cross the stream courses, along with the middle aisle of the both Hyman and Cooper. Accessibility will be improved on the stretches connecting Mill and Galena to Rubey Park Transit.P52VII.A. 44P53 VII.A. 45 ALTERNATIVE ONEP54 VII.A. 46 STAY THE COURSE ALTERNATIVE 1 With each alternative we are pushing the limits of a specific approach. This is the most “restrained” alternative in terms of programming and physical modifications. Programming is kept to what is there today. Areas of art are proposed under the bosques and outdoor dining on Mill is maintained as-is. Dining is proposed on north sections of Hyman and Cooper with smaller café tables proposed in the center. The utilities are moved to the alleyways with the intent of very little disturbance impacts on Hyman and Cooper (except to address an accessible path). CONCEPTUAL SITE PLAN PEDESTRIAN ALLEY ALLEY B ALLEY C COOPER AVENUE HYMAN AVENUE RUBEY PARK TRANSIT CENTER E DURANT AVENUE S GALENA STREETMILL STREETWAGNER PARK WHEELER NODE WAGNER NODE INDEPENDENCE NODE GALENA HYMAN NODE ALLEY A LIMIT OF PROJECT SCOPE OF WORK (TYPICAL) P55VII.A. 47 PAINTED CROSS WALK PAINTED CROSS WALKS (TYPICAL) MAINTAIN KI DAVIS FOUNTAIN. RAISE WATER LEVEL. REMOVE 1 PARKING SPACE FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. ALIGN TO WALKING ZONE ALIGN TO WALKING ZONE EXISTING CURB ALIGNMENT TO REMAIN EXISTING CURB ALIGNMENT TO REMAIN DANCING FOUNTAIN REPAIRED STREET TREE PATTERN IS CONTINUED. OUTDOOR DINING REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. OUTDOOR DINING OUTDOOR DINING OUTDOOR DINING LEAVE EXISTING GUTTER, CURBS, STREAMS, LANDSCAPE AND CENTER PAVING AS-IS. PROTECT IN PLACE. REPLACE STREET TREES WITH NEW DECIDUOUS TREES IN SAME LOCATION. EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE, SIZE AND PATTERN. FINISHED SURFACE AND GRADE CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) REPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL) CONCRETE BANDING EDGE (TYPICAL) REBUILD BRIDGES TO CONFORM TO ADA DESIGN CRITERIA. ALLEY BPEDESTRIAN ALLEY MILL STREETSOUTH GALENA STREETREMOVE 2 PARKING SPACES FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. BRICK PAVING TO MATCH EXISTING PATTERN AND FORM P56VII.A. 48 PAINTED CROSS WALKS NEW KIOSK IN EXISTING LOCATION (8.5’ X 8.5’) REMOVE 1 PARKING SPACE FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. EXISTING CURB ALIGNMENT TO REMAIN LEAVE EXISTING GUTTER, CURBS, STREAMS, LANDSCAPE AND CENTER PAVING AS-IS. PROTECT IN PLACE. EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE AND SIZE. FINISHED SURFACE AND GRADE TO BE ADA. (TYPICAL) REBUILD BRIDGES TO CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) CONCRETE BANDING EDGE (TYPICAL) SOUTH GALENA BOSQUE MAINTAINED NEW SHADE TREES IN BOSQUE FORM REBUILD SISTER CITIES MARBLE BANDS WITHIN BRICK FRAMEWORK REBUILD WAGNER PARK EDGE WITH 6”CONCRETE BAND. EXTEND TOWARDS ALLEY CNATURE INSPIRED PLAYGROUND EXISTING RESTROOMS REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. ADIRONDACK SEATING ALONG WAGNER PARK EDGE OUTDOOR DINING NEW ORNAMENTAL TREES IN BOSQUE FORM BRICK PAVING TO MATCH EXISTING PATTERN AND FORM (TYPICAL) OUTDOOR DINING OUTDOOR DINING REPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL)P57VII.A. 49 NEW STREET TREES AND BIORETENTION AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. PAINTED CROSS WALKS (TYPICAL) RUBEY PARK TRANSIT CENTER E DURANT AVENUE PAINTED CROSS WALKS (TYPICAL) NEW STREET TREES AND BIORETENTION AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. MAINTAIN MUSIC VENUE BUS PARKING MAINTAIN EXISTING IDEWALK ALIGNMENTP58VII.A. 50 ALTERNATIVE 1 | MILL STREET NEW STREET TREES AND BIORETENTIAN AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. NEW SHADE TREES IN BOSQUE FORM OUTDOOR DINING EXISTING RESTROOM TO REMAIN IN PLACE REBUILD SISTER CITIES MARBLE BANDS WITHIN BRICK FRAMEWORK WAGNER NODE TO DURANT AVENUE MAINTAIN EXISTING SIDEWALK ALIGNMENT ADIRONDACK SEATING ALONG WAGNER PARK EDGE P59VII.A. 51 WHEELER NODE WHEELER OPERA HOUSE NATURE PLAYGROUND PEDESTRIAN ALLEY DANCING FOUNTAIN REPAIRED OUTDOOR DINING PAINTED CROSS WALK REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. REMOVE 2 PARKING SPACES FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE.P60VII.A. 52 ALTERNATIVE 1 | ACCESSIBILITY Within the limit of work, all surfaces will be rebuilt to ADA codes to the greatest extent possible within grading constraints. Detailed grading studies will be developed in these areas. This includes the bridges that cross the stream courses, along with the middle aisle of the both Hyman and Cooper. Accessibility will be improved on the stretches connecting Mill and Galena to Rubey Park Transit. Future detailed grading studies will test preservation of the Hyman and Cooper brick rolled curbs. This will change the gutter slopes before tying back into the existing system. AREAS TO BE REBUILT WITH HIGHEST ACCESSIBILITY STANDARDS POSSIBLE. AREAS NOT REGRADED. EXISTING SLOPES AND MATERIALS TO REMAIN AS-IS. AREAS NOT REGRADED. EXISTING SLOPES AND MATERIALS TO REMAIN AS-IS.P61VII.A. 53 CROSS SLOPE DECREASES FROM 4.9% TO 1.7% OUTER BRICK GUTTER STEEPENS TO 52% CROSS SLOPE DECREASES FROM 4.9% TO 1.7% OUTER BRICK GUTTER STEEPENS TO 21.8% BOTTOM OF GUTTER TO BOTTOM OF GUTTER LEFT AS-IS REBUILT AREA REBUILT AREA P62VII.A. 54 ALTERNATIVE 1 | EMERGENCY ACCESS • Fire lane: 20’ width on Hyman and Cooper • Fire lane: 16’ width on Mill and Galena • 3-story buildings on North side of Hyman and Galena will have access from fire truck crane. • 2-story buildings are reachable by fire hose across the center aisles (streams and center trees). • Tree limbs will be selectively pruned so as not to impede with fire truck access. • Alleys are designated for emergency access, and will be clear of dumpsters, trash, and delivery trucks when needed. 50’ TURNING RADIUS 50’ TURNING RADIUS50’ TURNING RADIUS 50’ TURNING RADIUS 50’ TURNING RADIUS 50’ TURNING RADIUS50’ TURNING RADIUS 50’ TURNING RADIUS 20 FEET OF ACCESS 20 FEET OF ACCESS 20 FEET OF ACCESS20 FEET OF ACCESS20 FEET OF ACCESS20 FEET OF ACCESSP63VII.A. 55 ALTERNATIVE 1 | EMERGENCY ACCESS 20 FEET OF ACCESS FIRE HOSE CAN REACH 2-STORY STRUCTURES FROM SOUTH SIDE SOUTH SIDE ACCESS ALLOWS FIRE TRUCK TO ACCESS 3 STORY BUILDINGS WITH FIRE TRUCK LADDER AFD ERECTS MANUAL LADDER ON NORTH SIDE OF MILL AND HYMANP64 VII.A. 56 ALTERNATIVE 1 | OUTDOOR DINING Outdoor dining is restricted to north facing buildings on Hyman and Cooper, building frontages on Mill, within tree bosques on Mill, and against the northern edge of the middle aisle on Hyman and Cooper. Proposed Dining Existing BenchesP65 VII.A. 57 ALTERNATIVE 1 | OUTDOOR DINING 12 FEET OF DINING6 FEET DINING 100% ACCESS THROUGH BRIDGES MAINTAINEDP66 VII.A. 58 ALTERNATIVE 1 | VEGETATION STRATEGY A high priority of this project is to maintain a healthy urban forest and to promote smart succession over the next century. In Alternative 1, new tree bosques will be planted at mid-Mill and south-Mill, and the crabapple bosques at north Mill and Galena will be removed but salvaged for replanting in the project. New street trees are added on south Galena and Mill that act as bioretention areas. STREET TREE PATTERN IS CONTINUED. REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. NEW SHADE TREES IN BOSQUE FORM REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. NEW STREET TREES AND BIORETENTION AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. NEW STREET TREES AND BIORETENTION AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. REPLACE STREET TREES WITH NEW DECIDUOUS TREES IN SAME LOCATION. REPLACE STREET TREES WITH NEW DECIDUOUS TREES IN SAME LOCATION.P67VII.A. 59 VEGETATION STRATEGY TO BE UPDATED P68VII.A. 60 ALTERNATIVE 1 | LIGHTING 1 2The most minimal approach to lighting, this alternative preserves existing antique lights, yet looks to refurbish the fixtures to be compliant with the dark sky ordinance. In addition the antique lights, bollard lights similar to the original design and installation will be places at each bridge crossing.P69VII.A. 61 EXISTING POLES WITH NEW ACORNS AND GFCI OUTLETS SIMPLE STANDARD BOLLARDS WITH NO ADDITIONAL OUTLETS The existing poles will be cleaned, refurbished, and fit with integrated GFCI outlets. New, LED acorn heads will be tenon-mounted to the top of the poles. These luminaire heads will replicate the historic aesthetic of the existing acorn-style post top luminaires. Bollards are located at bridges to provide supplemental, pedestrian-scale, low level lighting. These will be affordable, standard bollards with efficient optics. These are available in 180-degrees and 360-degree configurations. These bollards are Dark-Sky Friendly and meet the Aspen Outdoor Lighting code. 2 1 P70VII.A. 62 ALTERNATIVE 1 | PROGRAMMING 1 2 3 3 3 3 3 3 4 5 6 P71VII.A. 63 POPCORN TRUCK DANCING FOUNTAIN2 OUTDOOR DINING3 NATURE-INSPIRED PLAYGROUND ADIRONDACK SEATING5 BROTH-EL FOOD TRUCK / FROZEN YOGURT TRUCK 64 1 P72VII.A. 64 ALTERNATIVE 1 | NATURE PLAYGROUND A new playground design will explore more nature-inspired features, tying more seamlessly into the surrounding landscape, and allowing for interactive play for children of a wider agegroup than the existing playground does.P73VII.A. 65 ALTERNATIVE 1 | KI DAVIS FOUNTAIN As the existing fountain seems to turn its back on the Mall and its visitors, this alternative simply redesigns the Ki Davis fountain by raising the water level, allowing for more interaction with the fountain and addresses certain safety issues some parents have brought up in the edge of the fountain. RAISED WATER LEVEL EXISTING FOUNTAIN SECTION EXISTING FOUNTAIN DESIGNWORKSHOP Comment: Comment text...Drawn/Checked Proj. Num.Date Sheet Scale OF Project TitleClient / Location Sheet Description AAA AAA 0000 00/00/0000 00 00 1"= 0'-00" PROPOSED MODIFICATIONS PROPOSED MODIFICATIONS P74VII.A. 66 STAY THE COURSE HISTORIC CHARACTER SUMMARY Retains more of Hyman/Cooper with more extensive modification to Mill. • • Hyman/Cooper will address accessibility. • Hyman/Cooper will retain patterns, materials, and relationships. • Mill will address accessibility and new utilities. • Mill will include the replacement of trees planted in historic patterns. • Mill will retain patterns that exist today. Further study repair of Hyman/Cooper (raise/repair gutter, modify slope using existing gutter, etc.). BENEFITS • Preserves historic patterns; accomplishes repairs using historic materials (reuse of brick, trees, etc.); • Integrates new materials (brick & tree succession) in method sensitive to historic fabric; • Retains the historic pattern of Mill (trees and paving). • Seeks to box and replant existing crabapples. CHALLENGES • New trees - selection of tree species and size. • Need for detailed grading and site details to adequately replace in-kind. CONCEPTUAL SITE PLAN ALTERNATIVE 1 | HISTORIC PRESERVATION REPAIR HYMAN AND COOPER STREETS TO ADDRESS ACCESSIBILITY WHILE RETAINING PATTERN, MATERIAL, RELATIONSHIPS. REUSE HISTORIC MATERIALS IN HISTORIC LOCATIONS, AUGMENT WITH NEW IN-KIND WHERE NEEDED REPAIR MILL TO ACCOMMODATE ACCESSIBILITY AND NEW UTILITIES, AND REPLACE TREES PLANTED IN HISTORIC PATTERS. REUSE HISTORIC MATERIALS IN MOST LOCATIONS, AUGMENT WITH NEW IN-KIND. REPAIR GALENA TO ACCOMMODATE ACCESSIBILITY AND NEW UTILITIES. REUSE HISTORIC MATERIALS IN MOST LOCATIONS, AUGMENT WITH NEW IN-KIND. RETAINS MILL STREET PATTERNS THAT EXIST TODAY (INCLUDES LATE 2000s MODIFICATIONS) FURTHER STUDY REPAIR OF HYMAN AND COOPER STREETS (RAISING GUTTER, REPAIRING GUTTER, MODIFY SLOPE TO EXTENT POSSIBLE). UTILITIES MOVE TO ALLEYS ASSISTS IN SHORT AND LONG-TERM PRESERVATION OF HISTORIC FABRIC P75VII.A. 67 ALTERNATIVE 1 | SITE FURNISHINGS • Original benches are refurbished off-site and kept in original locations • Large tables are aggregated against buildings on Milll and against the southern side of the north stream course on Cooper, while smaller tables are aggregated along north facing buildings on Cooper and Hyman, as well as within the crabapple bosques on Mill. • Bollard lights are added at all bridge locations • Adirondack chairs are placed on the southern edge of Mill. • Light poles are refurbished off-site to comply with the dark sky ordinance, and kept in original locations. • Bike racks are aggregated on outer edges of mall. • Trash receptacles are aggregated on outer edges of mall. • Planters are restricted to Mill and Galena beneath existing bosques. Small Table Large Table Existing Benches Proposed Edge Chairs Bollard Lights Bike Racks (46) Planters Light Poles Trash ReceptaclesP76 VII.A. 68P77 VII.A. 69 ALTERNATIVE TWOP78 VII.A. 70 COMMUNITY ACTIVATE ALTERNATIVE 2 This alternative pushes the boundaries on programming of the mall. The south end of Mill is a games area of bocce, bowling, fire or other programming ideas which activate this edge. The east and west sections of Rubey park are identified as transitional zones to address bike storage and stormwater (not a mall expansions but character of its own time and place). Galena includes a new water element, a water table which could be turned off and used as a community dining table. CONCEPTUAL SITE PLAN PEDESTRIAN ALLEY ALLEY B ALLEY C COOPER AVENUE HYMAN AVENUE RUBEY PARK TRANSIT CENTER E DURANT AVENUE S GALENA STREETMILL STREETWAGNER PARK WHEELER NODE WAGNER NODE INDEPENDENCE NODE GALENA HYMAN NODE ALLEY A LIMIT OF PROJECT SCOPE OF WORK (TYPICAL) P79VII.A. 71 REBUILD KI DAVIS FOUNTAIN EDGE CONDITIONS. ALIGN TO AISLE EXISTING CURB ALIGNMENT TO REMAIN EXISTING CURB ALIGNMENT TO REMAIN DANCING FOUNTAIN REPAIRED BRICK PAVING TO MATCH EXISTING PATTERN AND FORM STREET TREE PATTERN IS REPLACED WITH ADDITIONAL BOSQUE ROW. OUTDOOR DINING REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. CURB RAMP FLUSH WITH STREET. EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE, SIZE AND PATTERN. FINISHED SURFACE AND GRADE CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) EXTEND CURB TO NARROW PEDESTRIAN CROSSING DISTANCE. ALLEY BPEDESTRIAN ALLEY MILL STREETSOUTH GALENA STREETCONCRETE INTERSECTION CONCRETE INTERSECTION ALIGN TO AISLE PROTECT EXISTING LANDSCAPE AREAS IN PLACE. (TYPICAL) REBUILD GUTTER AND ROLLED CURB TO MATCH EXISTING DETAIL. (TYPICAL) CONCRETE BANDING EDGE (TYPICAL) REBUILD BRIDGES TO CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) OUTDOOR DINING REPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL)P80VII.A. 72 CONCRETE INTERSECTION NEW KIOSK IN EXISTING LOCATION (8.5’ X 8.5’) REMOVE 1 PARKING SPACE FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE.REBUILD GUTTER AND ROLLED CURB TO MATCH EXISTING DETAIL. (TYPICAL) EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE, SIZE AND PATTERN. FINISHED SURFACE AND GRADE CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) WATER FEATURES AT TABLE HEIGHT. CONVERTED TO COMMUNITY TABLES FOR SPECIAL EVENTS. CURB RAMP FLUSH WITH STREET REPLACE SHADE TREES IN BOSQUE FORM. OUTDOOR DINING REPLACE SHADE TREES WITH ORNAMENTAL TREES IN BOSQUE FORM. OUTDOOR DINING OUTDOOR DINING REPAIR SISTER CITIES PLAZA WITH BRICK CIRCLE AND MARBLE BANDS. IMAGINATION PLAYGROUND FLEXIBLE GAMES COURT PROTECT EXISTING LANDSCAPE AREAS IN PLACE. (TYPICAL) REPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL) EXISTING CURB ALIGNMENT TO REMAIN BRICK PAVING TO MATCH EXISTING PATTERN AND FORM (TYPICAL) EXISTING RESTROOMS REBUILD WAGNER PARK EDGE WITH 6” CONCRETE BAND.P81VII.A. 73 EXISTING CURB ALIGNMENT TO REMAIN NEW STREET TREES AND ORNAMENTAL PLANTINGS. RUBEY PARK TRANSIT CENTER E DURANT AVENUE CONCRETE CROSSWALKS (TYPICAL) CONCRETE CROSSWALKS (TYPICAL) NEW STREET TREES AND ORNAMENTAL PLANTINGS. MAINTAIN MUSIC VENUE BUS PARKINGBIKE SHELTER REBUILD GRADE CHANGE WITH CONCRETE WALL WAGNER PARK EDGE CONTINUES TOWARDS DURANT.P82VII.A. 74 ALTERNATIVE 2 | MILL STREET NEW STREET TREES AND BIORETENTIAN AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. NEW SHADE TREES IN BOSQUE FORM OUTDOOR GAMES EXISTING RESTROOM TO REMAIN IN PLACE WAGNER NODE TO DURANT AVENUE MAINTAIN EXISTING SIDEWALK ALIGNMENT FIRE FEATURE FIRE FEATURE REPAIR SISTER CITIES PLAZA WITH BRICK CIRCLE AND MARBLE BANDS. BIKE + SKI SHELTER IMAGINATION PLAYGROUNDP83 VII.A. 75 WHEELER NODE WHEELER OPERA HOUSE IMAGINATION PLAYGROUND PEDESTRIAN ALLEY DANCING FOUNTAIN REPAIRED OUTDOOR DINING REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. REMOVE 2 PARKING SPACES FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. CONCRETE INTERSECTIONP84 VII.A. 76 ALTERNATIVE 2 | ACCESSIBILITY Within the limit of work, all surfaces will be rebuilt to ADA codes to the greatest extent possible within grading constraints. Detailed grading studies will be developed in these areas. This includes the bridges that cross the stream courses, along with the middle aisle of the both Hyman and Cooper. Accessibility will be improved on the stretches connecting Mill and Galena to Rubey Park Transit. AREAS TO BE REBUILT WITH HIGHEST ACCESSIBILITY STANDARDS POSSIBLE.P85VII.A. 77 CROSS SLOPE DECREASES FROM 4.9% TO 1.7%CROSS SLOPE DECREASES FROM 4.9% TO 1.7% OUTER BRICK GUTTER DECREASES TO 21.8% CROSS SLOPE DECREASES FROM 3.8% TO 1.5% REBUILT AREA REBUILT AREA REBUILT BRIDGE REBUILT AREA OUTER BRICK SLOPE DECREASES TO 42.5% STREAM COURSE UNTOUCHED STREAM COURSE UNTOUCHEDP86 VII.A. 78 ALTERNATIVE 2 | EMERGENCY ACCESS • Fire lane: 20’ width on Hyman and Cooper • Fire lane: 16’ width on Mill and Galena • 3-story buildings on North side of Hyman and Galena will have access from fire truck crane. • 2-story buildings are reachable by fire hose across the center aisles (streams and center trees). • Tree limbs will be selectively pruned so as not to impede with fire truck access. • Alleys are designated for emergency access, and will be clear of dumpsters, trash, and delivery trucks when needed. 20 FEET OF ACCESS 20 FEET OF ACCESS 20 FEET OF ACCESS20 FEET OF ACCESS20 FEET OF ACCESS20 FEET OF ACCESSP87VII.A. 79 20 FEET OF ACCESS NORTH AND SOUTH SIDE ACCESS ALLOWS FOR DIRECT ACCESS TO 2 AND 3-STORY BUILDINGS 20 FEET OF ACCESSP88 VII.A. 80 ALTERNATIVE 2 | OUTDOOR DINING Proposed Dining Existing Benches Outdoor dining is restricted to the central spine Hyman and Cooper, and along building frontages on North Mill. The Eastern and Western edges of Hyman and Cooper are left open to allow passage across bridges.P89VII.A. 81 10.8 FEET OF DINING DOWN CENTRAL AISLE (EASTERNMOST AND WESTERNMOST EDGES OF HYMAN AND COOPER KEPT OPEN FOR PEDESTRIAN PASSAGE)P90VII.A. 82 ALTERNATIVE 2 | LIGHTING 1 2 4 3 This alternative looks at supplementing the retrofitted antique ligths with custom historic bollards with integrated outlets, catenary lighting, and sculptural light art. New typologies of light are created in newly designed spaces; the new bosque on south Mill will have catenary lighting, and the Galena node will have sculptural light art. P91VII.A. 83 CATENARY LIGHTING Additional overhead lighting in gathering spaces could be provided by catenary lighting. Gathering places become identified with a welcoming lit environment. EXISTING POLES WITH NEW DARK SKY FRIENDLY LUMINAIRE AND GFCI OUTLETS The existing poles will be cleaned, refurbished, and fit with integrated GFCI outlets. New, LED, dark-sky friendly luminaire heads will be tenon-mounted to the top of the poles. These luminaire heads will compliment the historic aesthetic of the existing acorn-style post top luminaires without light pollution. The Aspen Outdoor Lighting Code requires outdoor lighting to be fully shielded such that no light is emitted CUSTOM HISTORIC BOLLARDS WITH INTEGRATED OUTLETS Bollards are located at bridges and elsewhere to provide supplemental, pedestrian-scale, low-level lighting, with integrated outlets to provide convenient power for programmed events. These will be custom bollards, similar to the original bollard, with integrated LED light modules. These bollards are Dark-Sky friendly and meet the Aspen Outdoor Lighting code. METAL WOOD Interactive Light Art With the installation of sensors, an artistic lighting feature can become interactive, creating patterns light that respond to movement and sound. These installations can be permanent or temporary. This often uses color changing lighting to increase the ways in which the feature can be interactive, but white light can also be used in this application. SCULPTURAL LIGHT ART Lighting can be used to enhance existing or new sculptural elements. These sculptures take on a new appearance at night, adding to the dynamic feel of the space. Color and shadows may both be used to give new life to sculptures. Shadow art Creating an intentional mix of light and shadow is a subtle way to provide artistic lighting in a space. Common applications include: mimicking leaves, stones, or water; displaying words and phrases; projecting light through architectural features. 1 2 3 4 4 4 P92VII.A. 84 ALTERNATIVE 2 | PROGRAMMING 1 2 3 3 3 3 4 5 6 7P93 VII.A. 85 POPCORN TRUCK DANCING FOUNTAIN2 OUTDOOR DINING3 IMAGINATION PLAYGROUND ADIRONDACK SEATING5 YOGURT TRUCK64 1 WATER TABLES7P94 VII.A. 86 ALTERNATIVE 2 | VEGETATION STRATEGY BOSQUE IS COMPLETED WITH A FOURTH ROW OF TREES IN PLACE OF EXISTING STREET TREES REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. NEW SHADE TREES IN BOSQUE FORM REMOVE, BOX AND SALVAGE EXISTING TREES FOR USE IN PROJECT. STOCKPILE AND MAINTAIN AT AN OFFSITE LOCATION. NEW ORNAMENTAL TREES IN BOSQUE FORM NEW STREET TREES AND BIORETENTIAN AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. NEW STREET TREES AND BIORETENTIAN AREAS TO MATCH RUBEY PARK TRANSIT ISLAND. A high priority of this project is to maintain a healthy urban forest and to promote smart succession over the next century. In Alternative 2, new tree bosques will be planted at mid-Mill and south-Mill, and the crabapple bosques at north Mill and Galena will be removed but salvaged for replanting in the project. New street trees are added on south Galena and Mill to match Rubey Park transit island. Original street trees along Hyman and Galena are removed. REMOVE STREET TREES P95VII.A. 87 VEGETATION STRATEGY TO BE DEVELOPED P96VII.A. 88 ALTERNATIVE 2 | IMAGINATION PLAYGROUND This alternative explores a playground focused on children’s imagination, with features that are monumental and transport kids to another world. PROPOSED CHARACTER IMAGERYP97 VII.A. 89 ALTERNATIVE 2 | KI DAVIS FOUNTAIN SEAT WALL RAISED WATER LEVEL EXTENDED SIDEWALK EXISTING FOUNTAIN SECTION EXISTING FOUNTAIN PROPOSED MODIFICATIONS PROPOSED MODIFICATIONS As the existing fountain seems to turn its back on the Mall and its visitors, this alternative rethinks the Cooper facing side by creating a seat wall that allows more interacting with the surface of the fountain, along with raising the water level. DESIGNWORKSHOP Comment: Comment text...Drawn/Checked Proj. Num.Date Sheet Scale OF Project TitleClient / Location Sheet Description AAA AAA 0000 00/00/0000 00 00 1"= 0'-00"P98VII.A. 90 ALTERNATIVE 2 | HISTORIC PRESERVATION STAY THE COURSE ALL ALTERNATIVES: • Intend to meet all project goals - accessibility, historic integrity, • Each street requires repair to provide accessibility. Mill Street requires repair to address utilities. • A succession plan of brick replacement will be developed to include a new brick or brick(s) as a stockpile for long-term needs. • A succession plan for tree replacement will be developed to ensure diversity of species, retaining historic patterns. • Remove concrete walls and barriers on SW corner of Cooper Street. BENEFITS Preserves historic patterns; accomplishes repairs using historic materials (reuse of brick, trees, etc.); Integrates new materials (brick & tree succession) in method that is sensitive to historic fabric; Minimizes modifications to Hyman and Cooper streets compared to Alt 2 & 3. Retains the historic pattern on Mill Street in the north (trees and paving). Modification of tree plantings on south are changed but retain sense of historic pattern. CHALLENGES Selection of tree species / sizes to adequately replace historic crabapples on Mill and Galena streets; Need for very detailed grading plans and highly crafted site details to adequately build to replace in-kind. Impacts historic small scale features (benches) on Mill and Galena streets. CONCEPTUAL SITE PLAN HYMAN AND COOPER STREETS EXTENSIVELY IMPACTED BY UTILITIES -- WATER LINE LOOP, WATER QUALITY IN HISTORIC GUTTERS IN ADDITION TO ACCESSIBILITY NEEDS. DETAILING OF JOINTS BETWEEN PAVERS WILL BE FUTHER STUDIED. REPAIR MILL TO ACCOMMODATE ACCESSIBILITY, WATER QUALITY AND UTILITIES. INCLUDES REPLCAING TREES PLANTED IN HISTORIC PATTERNS. REUSE HISTORIC MATERIALS IN MOST LOCATIONS, AUGMENT REPAIR GALENA TO ACCOMMODATE ACCESSIBILITY, WATER QUALITY AND UTILITIES. INCLUDES REPLCAING TREES PLANTED IN HISTORIC PATTERNS. REUSE HISTORIC MATERIALS IN MOST LOCATIONS, AUGMENT WITH NEW IN-KIND. TREE PATTERNS ON MILL STREET SOUTH ARE MODIFIED. RETAINS NON-HISTORIC MILL STREET PATTERNS THAT EXIST TODAY FOR THE LATE 2000S MODIFICATIONS. TREE PATTERNS ON GALENA STREET ARE MODIFIED. TREES THAT PREDATE MALL CONSTRUCTION ARE REMOVED FOR ACCESIBILITY UPGRADES OR FOR UTILITIES. MINIMAL EXTENSION TO SOUTH AND EAST. HYMAN AND COOPER STREETS EXTENSIVELY IMPACTED BY UTILITIES -- WATER LINE LOOP, WATER QUALITY IN HISTORIC GUTTERS IN ADDITION TO ACCESSIBILITY NEEDS. DETAILING OF JOINTS BETWEEN PAVERS WILL BE FUTHER STUDIED.P99VII.A. 91 ALTERNATIVE 2 | SITE FURNISHINGS • Original benches are refurbished off-site and kept in original locations • Large tables are aggregated against buildings on Milll and against the southern side of the north stream course on Cooper, while smaller tables are aggregated along north facing buildings on Cooper and Hyman, as well as within the crabapple bosques on Mill. • Bollard lights are added at all bridge locations • Adirondack chairs are placed on the southern edge of Mill. • Light poles are refurbished off-site to comply with the dark sky ordinance, and kept in original locations. • Bike racks are aggregated on outer edges of mall. • Trash receptacles are aggregated on outer edges of mall. • Planters are restricted to Mill and Galena beneath existing bosques. Small Table Large Table Existing Benches Bollard Lights Bike Racks (46) Planters Light Poles Trash Receptacles Bocce CourtP100 VII.A. 92P101 VII.A. 93 ALTERNATIVE THREEP102 VII.A. 94 CAPTURING POTENTIAL ALTERNATIVE 3 Alternative three explores the best version of the mall’s relationship to surrounding context. Through a phased approach (after the useful life of the restroom), the building is split apart into 2 equal structures on the north and south sections of Mill. This does two things – opens up the view to Wagner park and creates a strong play area between. A new water element would be introduced at sister cities – a misting fountain which could be turned off and used as walking surfaces for certain occasions. CONCEPTUAL SITE PLAN PEDESTRIAN ALLEY ALLEY B ALLEY C COOPER AVENUE HYMAN AVENUE RUBEY PARK TRANSIT CENTER E DURANT AVENUE S GALENA STREETMILL STREETWAGNER PARK WHEELER NODE WAGNER NODE INDEPENDENCE NODE GALENA HYMAN NODE ALLEY A LIMIT OF PROJECT SCOPE OF WORK (TYPICAL) P103VII.A. 95 REBUILD KI DAVIS CENTER TO CREATE CASCADING FEATURE REMOVE 1 PARKING SPACE FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. ALIGN TO AISLE DANCING FOUNTAIN REPAIRED BRICK PAVING TO MATCH EXISTING PATTERN AND FORM STREET TREE PATTERN IS REPLACED WITH ADDITIONAL BOSQUE ROW. OUTDOOR DINING NEW BOSQUE OF ORNAMENTAL, NON-FRUIT BEARING TREES. CURB RAMP FLUSH WITH STREET. EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE, SIZE AND PATTERN. FINISHED SURFACE AND GRADE CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) EXTEND CURB TO NARROW PEDESTRIAN CROSSING DISTANCE. ALLEY BPEDESTRIAN ALLEY MILL STREETSOUTH GALENA STREETREMOVE 2 PARKING SPACES FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. BRICK + CONCRETE INTERSECTION BRICK INTERSECTION ALIGN TO AISLE PROTECT EXISTING LANDSCAPE AREAS IN PLACE. (TYPICAL) REBUILD GUTTER AND ROLLED CURB TO MATCH EXISTING DETAIL. (TYPICAL) CONCRETE BANDING EDGE (TYPICAL) REBUILD BRIDGES TO CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) OUTDOOR DINING OUTDOOR DININGREPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL)P104VII.A. 96 NEW KIOSK IN EXISTING LOCATION (8.5’ X 8.5’) REMOVE 1 PARKING SPACE FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE.REBUILD GUTTER AND ROLLED CURB TO MATCH EXISTING DETAIL. (TYPICAL) EXISTING PAVING TO BE RE-BUILT WITH CUSTOM BRICK TO MATCH EXISTING BRICK COLOR, TEXTURE, SIZE AND PATTERN. FINISHED SURFACE AND GRADE CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) ROTATING ART EXHIBITS CURB RAMP FLUSH WITH STREET REPLACE SHADE TREES IN BOSQUE FORM. OUTDOOR DINING REPLACE SHADE TREES WITH DECIDUOUS SHADE TREES. OUTDOOR DINING NEW MISTING WATER FEATURE WITH SISTER CITIES MARBLE BANDS. FLEXIBLE PLAYGROUND PROTECT EXISTING LANDSCAPE AREAS IN PLACE. (TYPICAL) REPAIR EXISTING BENCH FINISH. RETURN TO EXISTING LOCATIONS. (TYPICAL) BRICK PAVING TO MATCH EXISTING PATTERN AND FORM (TYPICAL)REBUILD WAGNER PARK EDGE WITH 6” CONCRETE BAND.PAVILION RESTROOMS 1400 sf PERGOLA SHADE STRUCTURE GAMES COURT BRICK + CONCRETE INTERSECTION EXTEND CURB TO NARROW PEDESTRIAN CROSSING DISTANCE. REBUILD BRIDGES TO CONFORM TO ADA DESIGN CRITERIA. (TYPICAL) OUTDOOR DINING OUTDOOR DININGP105 VII.A. 97 NEW STREET TREES IN GRATES AND ORNAMENTAL PLANTINGS. RUBEY PARK TRANSIT CENTER E DURANT AVENUE CONCRETE CROSSWALKS (TYPICAL) CONCRETE CROSSWALKS (TYPICAL) NEW STREET TREES AND ORNAMENTAL PLANTINGS. MAINTAIN MUSIC VENUE BUS PARKINGBIKE + SKI STORAGE BOULDERS MARK ENTRY TO THE MALL WAGNER PARK EDGE CONTINUES TOWARDS DURANT.P106VII.A. 98 ALTERNATIVE 3 | MILL STREET RESTROOMS WAGNER NODE TO DURANT AVENUE PERGOLABIKE + SKI SHELTER PERGOLA NEW MISTING WATER FEATURE WITH SISTER CITIES MARBLE BANDS. FLEXIBLE PLAYGROUND LAWN + GAMES COURTNEW STREET TREES IN GRATES AND ORNAMENTAL PLANTINGS.BRICK + CONCRETE INTERSECTION BOULDERS MARK ENTRY TO THE MALL WAGNER PARK EDGE CONTINUES TOWARDS DURANT.P107VII.A. 99 FLEXIBLE PLAYGROUND WHEELER NODE WHEELER OPERA HOUSE PAVILION PEDESTRIAN ALLEY DANCING FOUNTAIN REPAIRED OUTDOOR DINING REPLACE FRUITING CRABAPPLES WITH a NON- FRUITING TREE SPECIES REMOVE 2 PARKING SPACES FOR BIKE RACKS AND WASTE RECEPTACLES OVER CONCRETE SURFACE. BRICK + CONCRETE INTERSECTIONP108 VII.A. 100 ALTERNATIVE 3 | ACCESSIBILITY Within the limit of work, all surfaces will be rebuilt to ADA codes to the greatest extent possible within grading constraints. Detailed grading studies will be developed in these areas. This includes the bridges that cross the stream courses, along with the middle aisle of the both Hyman and Cooper. Accessibility will be improved on the stretches connecting Mill and Galena to Rubey Park Transit. AREAS TO BE REBUILT WITH HIGHEST ACCESSIBILITY STANDARDS POSSIBLE.P109VII.A. 101 CROSS SLOPE DECREASES FROM 4.9% TO 1.7%CROSS SLOPE DECREASES FROM 4.9% TO 1.7% OUTER BRICK GUTTER DECREASES TO 21.8% CROSS SLOPE DECREASES FROM 3.8% TO 1.5% REBUILT AREA REBUILT AREA REBUILT BRIDGE REBUILT AREA OUTER BRICK SLOPE DECREASES TO 42.5% STREAM COURSE UNTOUCHED STREAM COURSE UNTOUCHEDP110 VII.A. 102 ALTERNATIVE 3 | SNOWMELT This is the only alternative that considers snowmelt; here, a five foot band around the Hyman and Cooper building frontages, along with down the central spine of Mill, are snowmelted and drain into a slot drain. 102 CAPTURING POTENTIAL ALTERNATIVE 3 Alternative three explores the best version of the mall’s relationship to surrounding context. Through a phased approach (after the useful life of the restroom), the building is split apart into 2 equal structures on the north and south sections of Mill. This does two things – opens up the view to Wagner park and creates a strong play area between. A new water element would be introduced at sister cities – a misting fountain which could be turned off and used as walking surfaces for certain occasions. CONCEPTUAL SITE PLAN PEDESTRIAN ALLEY ALLEY B ALLEY C COOPER AVENUE HYMAN AVENUE RUBEY PARK TRANSIT CENTER E DURANT AVENUE S GALENA STREETMILL STREETWAGNER PARK WHEELER NODE WAGNER NODE INDEPENDENCE NODE GALENA HYMAN NODE ALLEY A LIMIT OF PROJECT SCOPE OF WORK (TYPICAL) P111VII.A. 103 SLOT DRAIN SLOT DRAIN 5’ STRIP OF SNOWMELT 5’ STRIP OF SNOWMELTP112 VII.A. 104 ALTERNATIVE 3 | EMERGENCY ACCESS 16 FEET OF ACCESS 50’ TURNING RADIUS 50’ TURNING RADIUS50’ TURNING RADIUS • Fire lane: 20’ width on Hyman and Cooper • Fire lane: 16’ width on Mill and Galena • 3-story buildings on North side of Hyman and Galena will have access from fire truck crane. • 2-story buildings are reachable by fire hose across the center aisles (streams and center trees). • Tree limbs will be selectively pruned so as not to impede with fire truck access. • Alleys are designated for emergency access, and will be clear of dumpsters, trash, and delivery trucks when needed.P113VII.A. 105 20 FEET OF ACCESS NORTH AND SOUTH SIDE ACCESS ALLOWS FOR DIRECT ACCESS TO 2 AND 3-STORY BUILDINGS 20 FEET OF ACCESSP114 VII.A. 106 ALTERNATIVE 3 | OUTDOOR DINING Outdoor dining is restricted to north facing buildings on Hyman and Cooper, building frontages on Mill, within tree bosques on Mill, and against the northern edge of the middle aisle on Hyman and Cooper. Proposed Dining Existing BenchesP115 VII.A. 107 6 FEET OF DINING 6 FEET OF DINING 100% ACCESS THROUGH BRIDGES MAINTAINEDP116 VII.A. 108 ALTERNATIVE 3 | VEGETATION STRATEGY A high priority of this project is to maintain a healthy urban forest and to promote smart succession over the next century. In Alternative 3, a new bosque of ornamental, non-fruit bearing trees will be planted at North Mill and South Galena. Shade trees will replace the ornamental trees at mid-Mill, and new shade trees in bosque form will be planted at South Mill. New street trees are added on south Galena and Mil, along with ornamental plantings. Original street trees are eliminated on North Hyman and North Cooper. BOSQUE IS COMPLETED WITH A FOURTH ROW OF TREES IN PLACE OF EXISTING STREET TREES NEW SHADE TREES IN BOSQUE FORM REMOVE STREET TREES REPLACE SHADE TREES WITH DECIDUOUS SHADE TREES. NEW BOSQUE OF ORNAMENTAL, NON-FRUIT BEARING TREES. NEW BOSQUE OF ORNAMENTAL, NON-FRUIT BEARING TREES. REMOVE STREET TREES NEW STREET TREES IN GRATES AND ORNAMENTAL PLANTINGS. NEW STREET TREES IN GRATES AND ORNAMENTAL PLANTINGS.P117VII.A. 109 VEGETATION STRATEGY TO BE DEVELOPED P118VII.A. 110 3 4 5 ALTERNATIVE 3 | LIGHTING CONCEPT DESCRIPTION This alternative looks at supplementing the retrofitted antique ligths with custom historic bollards with integrated outlets, catenary lighting, and sculptural light art. New typologies of light are created in newly designed spaces; the new bosque on south Mill will have catenary lighting, and the Galena node will have sculptural light art. 1 2 P119VII.A. 111 SHADE STRUCTURE LIGHTING New shade structures provide an opportunity for lighting. The lighting may enhance the architecture of the shade structure, or provide playful shadows beneath. NEW POLES WITH NEW ACORNS AND GFCI OUTLETS New poles with integrated GFCI outlets, and new, LED luminaire heads will be tenon-mounted to the top of the poles. These luminaire heads may replicate the historic aesthetic of the existing acorn-style post top luminaires. The selected LED luminaire head will be low glare to no hinder the Wagnet Park views and Dark-Sky friendly to comply with Aspen’s night sky preservation goals. The Aspen Outdoor Lighting Code requires outdoor lighting to be fully shielded such that no light is emitted above the horizontal plane of the luminaire to allow for a less obstructed view of the dark night sky. STANDARD BOLLARDS WITH INTEGRATED OUTLETS Bollards are located at bridges and elsewhere to provide supplemental, pedestrian-scale, low-level lighting, with integrated outlets to provide convenient power for programmed events. These will be standard LED bollards, selected to fit the aesthetic of the Mall. These bollards are Dark-Sky friendly and meet the Aspen Outdoor Lighting code. ART LIGHTING Rotating featured art require flexible lighting options. Accent lights may be located below the artwork, to be aimed as needed for changing art installations. FOUNTAIN LIGHTING The central mist fountain can be lit from small, recessed in-grade uplights. These small point-sources emit just enough light to catch the beads of mist, yet not contribute to light pollution in the valley. Subtle color-changing effects could enhance the fountain experience. 1 2 3 4 5 P120VII.A. 112 ALTERNATIVE 3 | PROGRAMMING 1 2 3 3 3 4 6 3 3 3 7 8 3 5P121 VII.A. 113 POPCORN TRUCK DANCING FOUNTAIN2 OUTDOOR DINING3 FLEXIBLE PLAYGROUND ADIRONDACK SEATING5 YOGURT TRUCK64 1 GAMES COURT + LAWN4P122 VII.A. 114 ALTERNATIVE 3 | FLEXIBLE PLAYGROUND This alternative explores a playground focused on imagination, flexibility, and movability. Installations will focus on equipment that sparks creativity; tree logs, boulders, and movable foam blocks allow children to create their own playground, much from a prescribed, off the shelf tooth that exists today. PROPOSED CHARACTER IMAGERYP123 VII.A. 115 ALTERNATIVE 3 | KI DAVIS FOUNTAIN RAISED PLINTH + SCULPUTRE RAISED WATER LEVEL EXTENDED SIDEWALK EXISTING FOUNTAIN SECTION EXISTING FOUNTAIN DESIGNWORKSHOP Comment: Comment text...Drawn/Checked Proj. Num.Date Sheet Scale OF Project TitleClient / Location Sheet Description AAA AAA 0000 00/00/0000 00 00 1"= 0'-00" PROPOSED MODIFICATIONS PROPOSED MODIFICATIONS As the existing fountain seems to turn its back on the Mall and its visitors, this alternative rethinks the fountain by raising the sculpture podium and cascades water off of it, creating more interest in the fountain.P124VII.A. 116 STAY THE COURSE ALL ALTERNATIVES: • Intend to meet all project goals - accessibility, historic integrity, • Each street requires repair to provide accessibility. Mill Street requires repair to address utilities. • A succession plan of brick replacement will be developed to include a new brick or brick(s) as a stockpile for long-term needs. • A succession plan for tree replacement will be developed to ensure diversity of species, retaining historic patterns. • Remove concrete walls and barriers on SW corner of Cooper Street. BENEFITS • Preserves historic patterns; accomplishes repairs using historic materials (reuse of brick, trees, etc.); • Integrates new materials (brick & tree succession) in method that is sensitive to historic fabric; • Retains the historic pattern on Mill Street in the north (trees and paving). • Modifies Mill Street features but retains intent of the historic pattern. Retains center gutters and walk and adds park spaces in a scale that is compatible with historic character. • Moves the massings of buildings and structures away from center of Mill Street, compatible with historic character (but not mimicking). CHALLENGES • Selection of tree species / sizes to adequately replace historic crabapples on Mill and Galena streets; • Need for very detailed grading plans and highly crafted site details to adequately build to replace in-kind. • Impacts historic small scale features (benches) on Mill and Galena streets. CONCEPTUAL SITE PLAN HYMAN AND COOPER STREETS EXTENSIVELY IMPACTED BY UTILITIES -- WATER LINE LOOP, WATER QUALITY IN HISTORIC GUTTERS IN ADDITION TO ACCESSIBILITY NEEDS. DETAILING OF JOINTS BETWEEN PAVERS WILL BE FUTHER STUDIED. REPAIR MILL TO ACCOMMODATE ACCESSIBILITY, WATER QUALITY, UTILITIES, AND ACTIVE EDGE AT WAGNER PARK. REPAIR GALENA TO ACCOMMODATE ACCESSIBILITY, WATER QUALITY AND UTILITIES. INCLUDES REPLCAING TREES PLANTED IN HISTORIC PATTERNS. REUSE HISTORIC MATERIALS IN MOST LOCATIONS, AUGMENT WITH NEW IN-KIND. ESTABLISHED RELATIONSHIP WITH WAGNER PARK, A HISTORIC INTENT BUT NOT NECESSARILY EXECUTED. HISTORIC PATTERNS INFORM NEW EDGE TREE PATTERNS ON GALENA STREET ARE MODIFIED. TREES THAT PREDATE MALL CONSTRUCTION ARE REMOVED FOR ACCESIBILITY UPGRADES OR FOR UTILITIES. ESTABLISHES CONNECTIONS TO SOUTH ALONG MILL AND DURANT STREETS. HYMAN AND COOPER STREETS EXTENSIVELY IMPACTED BY UTILITIES -- WATER LINE LOOP, WATER QUALITY IN HISTORIC GUTTERS IN ADDITION TO ACCESSIBILITY NEEDS. DETAILING OF JOINTS BETWEEN PAVERS WILL BE FUTHER STUDIED. NEW TREES PLANTED ON NORTH END IN HISTORIC PATTERNS. RETAINS NON-HISTORIC SISTER CITY PLAZA, MODIFIED AS A STEAM FOUNTAIN. ESTABLISHES CONNECTIONS TO SOUTH ALONG GALENA AND DURANT STREETS. ALTERNATIVE 3 | HISTORIC PRESERVATION P125VII.A. 117 ALTERNATIVE 3 | SITE FURNISHINGS • Original benches are refurbished off-site and kept in original locations • Large tables are aggregated against buildings on Milll and against the southern side of the north stream course on Cooper, while smaller tables are aggregated along north facing buildings on Cooper and Hyman, as well as within the crabapple bosques on Mill. • Bollard lights are added at all bridge locations • Adirondack chairs are placed on the southern edge of Mill. • Light poles are refurbished off-site to comply with the dark sky ordinance, and kept in original locations. • Bike racks are aggregated on outer edges of mall an on South Mill. • Trash receptacles are aggregated on outer edges of mall. • Planters are restricted to Mill and Galena beneath existing bosques. Small Table Large Table Existing Benches Proposed Edge Chairs Bollard Lights Bike Racks (58) Planters Light Poles Trash ReceptaclesP126 VII.A. 118 KIOSK EXISTING KIOSK WINDOW FOR ATTENDANT PLACE FOR SPECIAL EVENTSSEATS WITH LEDGE + OUTLETS / INTERNET PLACE FOR ROTATING EXHIBITS SEATS FOR DINING / LOUNGINGSPACE FOR WAYFINDING / MAPSP127 VII.A. 119 T-10 Permeable Pavement Systems PPS-6 Urban Drainage and Flood Control District August 2013 Urban Storm Drainage Criteria Manual Volume 3 Figure PPS-1.Permeable Pavement Sections © 2010 by Pavestone Company. All Rights Reserved. , Improving Your Landscape™are trademarks of the Pavestone Company. Eco-Priora™- Is a trademark of F. von Langsdorff Protected by one or more of the following patents: U.S. Patent 5,902,069 U.S. Patent 6,857,244. • Atlanta, GA:(770) 306-9691 • Austin/San Antonio, TX:(512) 558-7283 • Boston, mA:(508) 947-6001 • Cartersville, GA (770( 607-3345 • Charlotte, NC:(704) 588-4747 • Cincinnati, OH:(513) 474-3783 • Colorado Springs, CO:(719) 322-0101 • dallas/ft. Worth, TX:(817) 481-5802 • denver, CO:(303) 287-3700 • Hagerstown, md: (240) 420-3780 • Houston, TX:(281) 391-7283 • Kansas City, mO:(816) 524-9900 • Las Vegas, NV:(702) 221-2700 • New Orleans, LA:(985) 882-9111 • Phoenix, AZ:(602) 257-4588 • St. Louis/ Cape Girardeau, mO:(573) 332-8312 • Sacramento/ Winters, CA:(530) 795-4400 member of ASLA and NCmA w w w .p a v e s t o n e .c o m ICPI Charter member SKU# CDC 266V4 5/10World Wide Pavers PRO DU CT IN F ORM AT I ONEco-Priora™is available in one size. Height = 80mmEco-Priora™Dimensions: 4 3/4" W x 9 7/16"L x 3 1/8" HWt./Stone: 11.5 lbs.Stones/Pallet:280Approx. Wt./Pallet:3,255 lbs.Sq. Ft./Pallet:88Product Number: 699ECO-PRIORA™(120mm x 240mm)Pavestone Eco-Priora™ is the sustainable solution for permeable pavements. Eco-Priora™is produced in a 120mm x 240mm rectangular module that is 80mm inthickness with a patented interlocking joint and a micro-chamfered top edge profile. This ingenuity is singular to the Pavestone Eco-Priora™product and insures optimum pavement performance unequaled in the permeable paver industry. Theunique Eco-Priora™joint profile allows surface water to infiltrate into the pavement andits sub-layers. With initial permeability average flow rates of over 100 inches perhour, the Eco-Priora ™product, even with a clogging factor, will still meet themajority of current storm water management plans (SWMP). The structural interlocking capability is achieved by the paving unit having interlocking joints with aminimum of two vertically aligned horizontal interlocking spacer bars on each of itssides. These spacer bars interlock throughout the depth of the block and nest adjacently with neighboring paving units. This interlocking function resists lateraland vertical displacement when the unit is exposed to load. The dynamics of pavement stress are better distributed providing a structurally superior permeablepaving system. The micro-chamfered top edge profile produces a horizontal edge to edge dimensionthat is nominally 7mm including installation gapping. This small joint complies dimensionally with current ADA requirements for walking surfaces with spaces nogreater than 1/2 inch. This narrow jointed surface diminishes vibration for wheelchairs and shopping carts when compared to all other permeable paving products. Eco-Priora™can assist in meeting current EPA storm water regulationsand LEED certification. The Eco-Priora™product best achieves the balance of aesthetic segmental paving and the function of permeable pavement. Eco-Priora™is available in one size. Height = 80mm. Eco-Priora™is made from a “no slump” concrete mix made under extreme pressure and high frequency vibrations. Eco-Priora™has a compressive strength greater than 8000 psi, a water absorption maximum of 5% and will meet or exceed ASTM C-936. Note: Requires modifying the ASTM C 140 - Paver Annex A4 - “The test specimen shall be 60 ± 3 mm thick and, if necessary, cut to a specimen size having a Height/Thickness (width) [H/T] aspect ratio of 0.6 ± 0.1 C O m P O S I T I O N A N d m A N u fA C T u r E Complete installation & specification details are available by contacting your Pavestone Sales Representative. Note: Permeable pavements require both civil and hydraulic engineering. All final pavements design shall be approved by a licensed engineer familiar with local site conditions, building codes and storm water management plans. Parking Lots • Driveways • Patios • Entrance Areas • Sidewalks Terraces Garden Pathways • Pool Decks • Pedestrian Malls • Roof Gardens • Streets I N S TA L L AT I O N A P P L I C AT I O N S PERMEABLE PAVERS TREATMENT Bedding Course 1 1/2" to 2" (40 to 50mm) Thick (Typ. ASTM No. 8 or No. 9 Aggregate) Min. 4" (100mm) Thick ASTM No. 57 Stone Open - Graded Base ASTM No. 57 Stone Open Graded Perforated Pipes Sloped To Drain Soil Subgrade Sloped To Drain Concrete Pavers Min. 3 1/8" (80mm) Thick Typ. ASTM No. 8 or No. 9 Aggregate In Openings Curb/Edge Restraint With Cut-Outs For Overflow Drainage (Curb Shown) Bedding Course 1 1/2" to 2" (40 to 50mm) Thick (Typ. ASTM No. 8 or No. 9 Aggregate) Min. 4" (100mm) Thick ASTM No. 57 Stone Open - Graded Base Min. 6" (150mm) Thick ASTM No. 2 Stone Subbase ASTM No. 57 Stone Open Graded Perforated Pipes Sloped To Drain Soil Subgrade Sloped To Drain Concrete Pavers Min. 3 1/8" (80mm) Thick Typ. ASTM No. 8 or No. 9 Aggregate In Openings Curb/Edge Restraint With Cut-Outs For Overflow Drainage (Curb Shown) PERMEABLE PAVERS TREATMENT AND DETENTION Eco-Priora™ 1. Excavate unsuitable, unstable or unconsolidated subgrade material. Compact the area, which has been cleared as per the engineer’s of record (EOR) requirements. Backfill and level with open graded aggregates as per the EOR’s structural and hydraulic design. 2. Place bedding course of hard and angular material conforming to the grading requirements of ASTM No. 8 or No. 9 to a uniform minimum depth of 1 1/2" -2". (38mm) screeded to the grade and profile required. 3. Install Eco-Priora™with joints approximately 1/4". (7mm). 4. Where required, cut pave stones with an approved cutting device to fit accurately, neatly and without damaged edges. 5. Tamp pave stones with a plate compactor, uniformly level, true to grade and free of movement. 6. Spread a thin layer of hard angular material conforming to the grading requirements of ASTM No. 8 or No. 9 aggregate over entire paving area. 7. Make one more pass with plate compactor to nest the aggregate and fill joints to the top. 8. Sweep and remove surplus joint material. I n s ta l l at I o npattern © 2010 by Pavestone Company. All Rights Reserved. , Improving Your Landscape™are trademarks of the Pavestone Company. Eco-Priora™- Is a trademark of F. von Langsdorff Protected by one or more of the following patents: U.S. Patent 5,902,069 U.S. Patent 6,857,244. • Atlanta, GA:(770) 306-9691 • Austin/San Antonio, TX:(512) 558-7283 • Boston, mA:(508) 947-6001 • Cartersville, GA (770( 607-3345 • Charlotte, NC:(704) 588-4747 • Cincinnati, OH:(513) 474-3783 • Colorado Springs, CO:(719) 322-0101 • dallas/ft. Worth, TX:(817) 481-5802 • denver, CO:(303) 287-3700 • Hagerstown, md: (240) 420-3780 • Houston, TX:(281) 391-7283 • Kansas City, mO:(816) 524-9900 • Las Vegas, NV:(702) 221-2700 • New Orleans, LA:(985) 882-9111 • Phoenix, AZ:(602) 257-4588 • St. Louis/ Cape Girardeau, mO:(573) 332-8312 • Sacramento/ Winters, CA:(530) 795-4400 member of ASLA and NCmA w w w .p a v e s t o n e .c o m ICPI Charter member SKU# CDC 266V4 5/10World Wide Pavers PRO DU CT IN F ORM AT I ONEco-Priora™is available in one size. Height = 80mmEco-Priora™Dimensions: 4 3/4" W x 9 7/16"L x 3 1/8" HWt./Stone: 11.5 lbs.Stones/Pallet:280Approx. Wt./Pallet:3,255 lbs.Sq. Ft./Pallet:88Product Number: 699ECO-PRIORA™(120mm x 240mm)Pavestone Eco-Priora™ is the sustainable solution for permeable pavements. Eco-Priora™is produced in a 120mm x 240mm rectangular module that is 80mm inthickness with a patented interlocking joint and a micro-chamfered top edge profile. This ingenuity is singular to the Pavestone Eco-Priora™product and insures optimum pavement performance unequaled in the permeable paver industry. Theunique Eco-Priora™joint profile allows surface water to infiltrate into the pavement andits sub-layers. With initial permeability average flow rates of over 100 inches perhour, the Eco-Priora ™product, even with a clogging factor, will still meet themajority of current storm water management plans (SWMP). The structural interlocking capability is achieved by the paving unit having interlocking joints with aminimum of two vertically aligned horizontal interlocking spacer bars on each of itssides. These spacer bars interlock throughout the depth of the block and nest adjacently with neighboring paving units. This interlocking function resists lateraland vertical displacement when the unit is exposed to load. The dynamics of pavement stress are better distributed providing a structurally superior permeablepaving system. The micro-chamfered top edge profile produces a horizontal edge to edge dimensionthat is nominally 7mm including installation gapping. This small joint complies dimensionally with current ADA requirements for walking surfaces with spaces nogreater than 1/2 inch. This narrow jointed surface diminishes vibration for wheelchairs and shopping carts when compared to all other permeable paving products. Eco-Priora™can assist in meeting current EPA storm water regulationsand LEED certification. The Eco-Priora™product best achieves the balance of aesthetic segmental paving and the function of permeable pavement. Eco-Priora™is available in one size. Height = 80mm. Eco-Priora™is made from a “no slump” concrete mix made under extreme pressure and high frequency vibrations. Eco-Priora™has a compressive strength greater than 8000 psi, a water absorption maximum of 5% and will meet or exceed ASTM C-936. Note: Requires modifying the ASTM C 140 - Paver Annex A4 - “The test specimen shall be 60 ± 3 mm thick and, if necessary, cut to a specimen size having a Height/Thickness (width) [H/T] aspect ratio of 0.6 ± 0.1 C O m P O S I T I O N A N d m A N u fA C T u r E Complete installation & specification details are available by contacting your Pavestone Sales Representative. Note: Permeable pavements require both civil and hydraulic engineering. All final pavements design shall be approved by a licensed engineer familiar with local site conditions, building codes and storm water management plans. Parking Lots • Driveways • Patios • Entrance Areas • Sidewalks Terraces Garden Pathways • Pool Decks • Pedestrian Malls • Roof Gardens • Streets I N S TA L L AT I O N A P P L I C AT I O N S PERMEABLE PAVERS TREATMENT Bedding Course 1 1/2" to 2" (40 to 50mm) Thick (Typ. ASTM No. 8 or No. 9 Aggregate) Min. 4" (100mm) Thick ASTM No. 57 Stone Open - Graded Base ASTM No. 57 Stone Open Graded Perforated Pipes Sloped To Drain Soil Subgrade Sloped To Drain Concrete Pavers Min. 3 1/8" (80mm) Thick Typ. ASTM No. 8 or No. 9 Aggregate In Openings Curb/Edge Restraint With Cut-Outs For Overflow Drainage (Curb Shown) Bedding Course 1 1/2" to 2" (40 to 50mm) Thick (Typ. ASTM No. 8 or No. 9 Aggregate) Min. 4" (100mm) Thick ASTM No. 57 Stone Open - Graded Base Min. 6" (150mm) Thick ASTM No. 2 Stone Subbase ASTM No. 57 Stone Open Graded Perforated Pipes Sloped To Drain Soil Subgrade Sloped To Drain Concrete Pavers Min. 3 1/8" (80mm) Thick Typ. ASTM No. 8 or No. 9 Aggregate In Openings Curb/Edge Restraint With Cut-Outs For Overflow Drainage (Curb Shown) PERMEABLE PAVERS TREATMENT AND DETENTION Eco-Priora™ 1. Excavate unsuitable, unstable or unconsolidated subgrade material. Compact the area, which has been cleared as per the engineer’s of record (EOR) requirements. Backfill and level with open graded aggregates as per the EOR’s structural and hydraulic design. 2. Place bedding course of hard and angular material conforming to the grading requirements of ASTM No. 8 or No. 9 to a uniform minimum depth of 1 1/2" -2". (38mm) screeded to the grade and profile required. 3. Install Eco-Priora™with joints approximately 1/4". (7mm). 4. Where required, cut pave stones with an approved cutting device to fit accurately, neatly and without damaged edges. 5. Tamp pave stones with a plate compactor, uniformly level, true to grade and free of movement. 6. Spread a thin layer of hard angular material conforming to the grading requirements of ASTM No. 8 or No. 9 aggregate over entire paving area. 7. Make one more pass with plate compactor to nest the aggregate and fill joints to the top. 8. Sweep and remove surplus joint material. I n s ta l l at I o npattern ● Concrete/brick pervious pavers Homeowner use: Parking areas, patios not adjoining house, sidewalks, pool decks Driveways--Snow removal equipment may catch edges, rollers may be needed Precast concrete or brick manufactured in many sizes and shapes are laid with a drainage base and permeable joint material, allowing water to slowly seep into the ground. “Pervious pavers are most effective with other LID (Low Impact Development) treatment...(e.g. vegetated swales, cisterns or exfiltration tanks” 1 Illustration: http://www.icpi.org/sites/default/files/images/PICP-XC_label-1.img_assist_custom-365x265.jpg Permeable concrete/brick paver driveway at Howard County residence. This driveway has been in place for several years. KEY FINDINGS Permeable pavement is a method of paving that allows stormwater to seep into the ground as it falls rather than running off into storm drains and eventually the Roaring Fork River watershed. Permeable pavements function similarly to sand filters, in that they filter the water by forcing it to pass through different aggregate sizes and typically some sort of filter fabric. Therefore most of the treatment is through physical (or mechanical) processes. As precipitation falls on the pavement it infiltrates down into the storage basin where it is slowly released into the surrounding soil.” Long term research on permeable pavers shows their effective removal of pollutants such as total suspended solids, total phosphorous, total nitrogen…zinc, motor oil, and copper. In the void spaces, naturally occurring micro-organisms break down hydrocarbons and metals adhere. By stopping stormwater from pooling and flowing away, porous paving can help recharge underlying aquifers and reduces peak flows and flooding. That means that streams flow more consistently and at cooler temperatures, contributing to healthy ecosystems. Stormwater pollutants are broken down in the soil instead of being carried to surface waters.” 12 Below is a graphic that illustrates the relationship between surface flow, groundwater flow and aquifers. Since permeable pavement has a very high retention capability, it should always be considered as an alternative to conventional pavement. Permeable pavement is subject to the same feasibility constraints as most infiltration practices, as described below. Required Space. A prime advantage of permeable pavement is that it does not normally require additional space at a new development or redevelopment site, which can be important for tight sites or areas where land prices are high. Soils. Soil conditions do not typically constrain the use of permeable pavement, although they do determine whether an underdrain is needed. Underdrains may be required if the measured permeability of the underlying soils is less than 0.5 inches per hour (although utilization of an infiltration sump may still be feasible). When designing an infiltrating permeable pavement practice, designers must verify soil permeability by using the on- site soil investigation methods. Impermeable soils will require an underdrain. In fill soil locations, geotechnical investigations are required to determine if the use of an impermeable liner and underdrain are necessary or if the use of an infiltration sump is permissible. PAVER BEST PRACTICES P128VII.A. 120 DETAIL A SCALE 2.50 : 1 A 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SHEET 1 OF 1 DRAWN CHECKED QA MFG APPROVED mbinius 11/2/2017 DWG NO ATHENS BLOCK TITLE SIZE D SCALE REV 1.25 : 1 4.00 9.00 .125 .125 .125 DETAIL A SCALE 2.50 : 1 A 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SHEET 1 OF 1 DRAWN CHECKED QA MFG APPROVED mbinius 11/2/2017 DWG NO Base Block TITLE SIZE D SCALE REV 1.25 : 1 9.00 4.00 3.00 .125 DETAIL ASCALE 2.50 : 1 A 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SHEET 1 OF 1 DRAWN CHECKED QA MFG APPROVED mbinius 11/2/2017 DWG NO WHITACRE BLOCK TITLE SIZE D SCALE REV 1.25 : 1 4.00 9.00 .125 .125 .375 .125 DETAIL A SCALE 2.50 : 1 A 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SHEET 1 OF 1 DRAWN CHECKED QA MFG APPROVED mbinius 11/2/2017 DWG NO POSTON BLOCK TITLE SIZE D SCALE REV 1.25 : 1 4.00 9.00 .25 .125 2.25 .125 1.2575.125 MANUFACTURER SHOP DRAWINGS P129VII.A. 121 DRAINAGE ASPHALT FILL OVER ROLLED CURB 10% SLOPE EXISTING BRIDGE P130VII.A. 122P131 VII.A. 123 PUBLIC OUTREACH SUMMARY | PHASE 2P132VII.A. 124P133 VII.A. 125 COMMUNITY INPUT TO DATE Through three separate events, we have garnered critical information regarding our three separate concepts from the City of Aspen Partners, stakeholders, and the public through a facilitated discussion and polling questions. The following pages show combined results from these three events.P134VII.A. 126 COMBINED RESULTS 1. What best describes you?(Select all that apply) (Multiple Choice - Multiple Response) 2. Which of the stated project goals do you feel are top priorities?(Rank your top three) (Priority Ranking) 3. Which elements do you like in “Alternative 1 – Stay the Course”?(Select all that apply) (Multiple Choice - Multiple Response) 4. Which elements do you like in “Alternative 2 – Community Activate”? (Select all that apply) 5. Which elements do you like in “Alternative 3 – Capturing Potential”? (Select all that apply) (Multiple Choice - Multiple Response) 6. Which strategy do you like most for its treatment of Sister Cities Plaza?(Select only one) (Multiple Choice) 2 13 25 34 36 38 39 41 None Treatment of Sister Cities Plaza Playground –Imagination Reconstruction of Visitor Kiosk Flexible Games Area (i.e. Bocce, Bowling) Movable Adirondack or Swinging Chairs along Wagner… Connection to Durant Avenue Community Table/Water Table 3 18 27 31 32 33 41 47 71 None Flexible Playground Art Plaza Realigned Shade Trees on South/North Mill Street Flexible Games Area (i.e. Bocce, Bowling) Misting Fountain Shade Pavilion Connection to Durant Street – Urban Plaza Relocation of Restroom 1 9 15 46 None Alt 2 –Sister Cities Bands with Maintained Circle Alt 1 –Sister Cities Bands Integrated in Historic Node Alt 3 –Sister Cities Bands in Misting Fountain/ Event Area 0 0 1 2 12 18 26 34 49 I am a seasonal resident of Aspen I own a secondary home in Aspen I attend school in Aspen Other I visit/recreate in Aspen I am a business owner/ manager in Aspen I am a resident of Roaring Fork Valley (not Aspen) I am a primary resident of Aspen I work in Aspen 11 15 26 32 33 36 47 Address ADA accessibility Improve stormwater quality Encourage retail and restaurant activity Encourage pedestrian activity Maintain park-like character Upgrade utilities to meet future needs Maintain historic character 4 25 28 30 31 31 31 53 None Redesigned Sister Cities Plaza Removal of Firepit Connection to Durant Avenue Restored trees in South Mill area Reconstruction of Visitor Kiosk Playground - Nature-Inspired Expanded edge/seating along Wagner Park P135VII.A. 127 COMBINED RESULTS 7. Which strategy do you like most for its treatment of South Mill Street?(Select only one) (Multiple 8. Which strategy do you like most for its connection to Durant Avenue? (Select only one) (Multiple Choice) 9. Which strategy do you like the most for its connection to Ki Davis Fountain? (Select only one) (Multiple Choice) 10. Which strategy do you like most for its treatment of the Hyman/Galena intersection? (Select only one) 11. Which strategy do you like most for its treatment of Galena Plaza? (Select only one) (Multiple Choice) 1 3 15 47 None of the above Curb lines stays as is (30’ crossing) Modify west curb only (25’ crossing) Modify west/east curbs (20’ crossing) 0 7 18 39 None Alt 1 –Maintain Tree Bosque Alt 3 –A Plaza for Temporary, Rotating Art Alt 2 –Community Table/Water Table under Trees 2 8 19 37 None Alternative 1 –Casual Seating Alternative 2 –Multi- Purpose/Flexible Games Area Alternative 3 –Relocated Restroom 3 5 27 35 None Alternative 1 –Sidewalk Connection Alternative 2 –Garden/Flower Display Alternative 3 –Urban Plaza 2 8 18 38 None Alternative 1 –Repaired, Raised Water Alternative 3 –Cascading Water Alternative 2 –Rebuilt Edges for Seating 12. Which strategy to you like most for its alignment of the Cooper/Galena intersection? (Select only one) 2 4 4 46 None of the above Curb lines stays as is with crosswalk Curb lines stay as is with change of material East curbline expands to narrow travel laneP136 VII.A. 128 COMBINED RESULTS 15. In terms of safety and accessibility, what is your opinion of the snowmelted surfaces shown in Alternative Three? (Select only one) (Multiple Choice) 1 12 22 30 None Alternative 2 –Middle Aisle Only Alternative 1 –Storefront and Middle Aisle Alternative 3 –Along Ditches 11 38 Snowmelt is not acceptable Snowmelt is acceptable 13. Which strategy do you like most for its treatment of outdoor dining? (Select only one) (Multiple Choice) 1 2 4 7 21 30 I don’t know Strongly Oppose Oppose Neutral Support Strongly Support 16. In reference to Alternative 3, how supportive would you be to change of the Wagner Node to strengthen the physical and visual connection to Wagner Park? (Select only one) (Multiple Choice) (Multiple Choice - Multiple Response) 1 4 8 13 None Alternative 1 –Off the Mall (-4 parking spaces) Alternative 2 –On the Mall + Durant Bike Shelter Alternative 3 –Off the Mall + Durant Bike Storage (-4 spaces) 14. Which strategy do you like most for its treatment of bike storage on the mall? (Select only one) (Multiple Choice)P137VII.A. 129P138VII.A. 130P139 VII.A. 131 PARTNERING SESSION II As part of the internal Partnering Workshop, Design Workshop led a discussion about critical pieces of the project, followed by a series of critical consensus questions. Subsequent pages are a record of these questions and responses. P140VII.A. 132 1. What best describes you?(Select all that apply) (Multiple Choice - Multiple Response) 2. Which of the stated project goals do you feel are top priorities?(Rank your top three) (Priority Ranking) 3. Which elements do you like in “Alternative 1 – Stay the Course”?(Select all that apply) (Multiple Choice - Multiple Response) 4. Which elements do you like in “Alternative 2 – Community Activate”? (Select all that apply) 5. Which elements do you like in “Alternative 3 – Capturing Potential”? (Select all that apply) (Multiple Choice - Multiple Response) 6. Which strategy do you like most for its treatment of Sister Cities Plaza?(Select only one) (Multiple Choice) 0 4 5 8 9 9 11 12 12 None Treatment of Sister Cities Plaza Playground –Imagination Flexible Games Area (i.e. Bocce, Bowling) Realigned shade trees in South Mill area Connection to Durant Avenue Community Table/Water Table Movable Adirondack or Swinging Chairs along Wagner Park Reconstruction of Visitor Kiosk 0 3 4 10 None Alt 2 –Sister Cities Bands with Maintained Circle Alt 1 –Sister Cities Bands Integrated in Historic Node Alt 3 –Sister Cities Bands in Misting Fountain/ Event Area 0 7 8 8 9 9 10 11 13 None Realigned Shade Trees on South/North Mill Street Flexible Playground Misting Fountain Flexible Games Area (i.e. Bocce, Bowling) Art Plaza Relocation of Restroom Shade Pavilion Connection to Durant Street – Urban Plaza PARTNERING SESSION II 0 0 0 0 1 4 6 9 16 I am a seasonal resident of Aspen I own a secondary home in Aspen I attend school in Aspen Other I am a business owner/ manager in Aspen I am a primary resident of Aspen I visit/recreate in Aspen I am a resident of Roaring Fork Valley (not Aspen) I work in Aspen 3 5 6 8 8 9 10 Improve stormwater quality Encourage retail and restaurant activity Address ADA accessibility Encourage pedestrian activity Maintain park-like character Upgrade utilities to meet future needs Maintain historic character 0 7 8 8 9 10 11 15 None Redesigned Sister Cities Plaza Restored trees in South Mill area Connection to Durant Avenue Playground - Nature-Inspired Reconstruction of Visitor Kiosk Removal of Firepit Expanded edge/seating along Wagner Park P141VII.A. 133 7. Which strategy do you like most for its treatment of South Mill Street?(Select only one) (Multiple 8. Which strategy do you like most for its connection to Durant Avenue? (Select only one) (Multiple Choice) 9. Which strategy do you like the most for its connection to Ki Davis Fountain? (Select only one) (Multiple Choice) 10. Which strategy do you like most for its treatment of the Hyman/Galena intersection? (Select only one) 11. Which strategy do you like most for its treatment of Galena Plaza? (Select only one) (Multiple Choice) 12. Which strategy to you like most for its alignment of the Cooper/Galena intersection? (Select only one) (Multiple Choice) 0 1 4 12 None of the above Curb lines stays as is (30’ crossing) Modify west curb only (25’ crossing) Modify west/east curbs (20’ crossing) 0 3 4 10 None Alt 1 –Maintain Tree Bosque Alt 3 –A Plaza for Temporary, Rotating Art Alt 2 –Community Table/Water Table under Trees 0 1 4 11 None of the above Curb lines stays as is with crosswalk Curb lines stay as is with change of material East curbline expands to narrow travel lane 0.00% 17.65% 23.53% 58.82% None Alternative 2 –Multi- Purpose/Flexible Games Area Alternative 1 –Casual Seating Alternative 3 –Relocated Restroom 0 0 5 12 Alternative 1 –Sidewalk Connection None Alternative 2 –Garden/Flower Display Alternative 3 –Urban Plaza 0 3 6 7 None Alternative 1 –Repaired, Raised Water Alternative 2 –Rebuilt Edges for Seating Alternative 3 –Cascading Water PARTNERING SESSION II P142VII.A. 134 13. Which strategy do you like most for its treatment of outdoor dining? (Select only one) (Multiple Choice) 15. Which presented alternative would you most support overall?(Select only one) (Multiple Choice) PARTNERING SESSION II 0 3 7 8 None Alternative 2 –Middle Aisle Only Alternative 1 –Storefront and Middle Aisle Alternative 3 –Along Ditches 0 1 1 1 6 8 I don’t know Neutral Oppose Strongly Oppose Strongly Support Support 0 2 4 11 None Alt 2 –“Community Activate” Alt 1 –“Stay the Course” Alt 3 –“Capturing Potential” 14. In reference to Alternative 3, how supportive would you be to change of the Wagner Node to strengthen the physical and visual connection to Wagner Park? (Select only one) (Multiple Choice)P143VII.A. 135P144VII.A. 136P145 VII.A. 137 STAKEHOLDER SESSION II As part of the Stakeholder Session, Design Workshop led a discussion about critical pieces of the project, followed by a series of critical consensus questions. Subsequent pages are a record of these questions and responses. P146VII.A. 138 STAKEHOLDER SESSION II 1. What best describes you?(Select all that apply) (Multiple Choice - Multiple Response) 2. Which of the stated project goals do you feel are top priorities?(Rank your top three) (Priority Ranking) 3. Which elements do you like in “Alternative 1 – Stay the Course”?(Select all that apply) (Multiple Choice - Multiple Response) 4. Which elements do you like in “Alternative 2 – Community Activate”? (Select all that apply) 5. Which elements do you like in “Alternative 3 – Capturing Potential”? (Select all that apply) (Multiple Choice - Multiple Response) 6. Which strategy do you like most for its treatment of Sister Cities Plaza?(Select only one) (Multiple Choice) 2 3 8 9 11 11 12 13 16 None Treatment of Sister Cities Plaza Fire Feature Reconstruction of Visitor Kiosk Flexible Games Area (i.e. Bocce, Bowling) Movable Adirondack or Swinging Chairs along Wagner Park Community Table/Water Table Playground –Imagination Connection to Durant Avenue 2 3 7 7 9 9 14 14 17 None Flexible Playground Misting Fountain Art Plaza Flexible Games Area (i.e. Bocce, Bowling) Realigned Shade Trees on South/North Mill Street Shade Pavilion Connection to Durant Street – Urban Plaza Relocation of Restroom 1 3 4 15 None Alt 1 –Sister Cities Bands Integrated in Historic Node Alt 2 –Sister Cities Bands with Maintained Circle Alt 3 –Sister Cities Bands in Misting Fountain/ Event Area 0 0 0 1 3 8 11 13 20 I am a seasonal resident of Aspen I own a secondary home in Aspen I attend school in Aspen Other I visit/recreate in Aspen I am a resident of Roaring Fork Valley (not Aspen) I am a business owner/ manager in Aspen I am a primary resident of Aspen I work in Aspen 4 6 10 11 11 12 14 Address ADA accessibility Improve stormwater quality Maintain park-like character Upgrade utilities to meet future needs Encourage pedestrian activity Encourage retail and restaurant activity Maintain historic character 2 6 7 8 8 10 10 19 None Removal of Firepit Restored trees in South Mill area Connection to Durant Avenue Reconstruction of Visitor Kiosk Playground - Nature-Inspired Redesigned Sister Cities Plaza Expanded edge/seating along Wagner Park P147VII.A. 139 STAKEHOLDER SESSION II 7. Which strategy do you like most for its treatment of South Mill Street?(Select only one) (Multiple 8. Which strategy do you like most for its connection to Durant Avenue? (Select only one) (Multiple Choice) 9. Which strategy do you like the most for its connection to Ki Davis Fountain? (Select only one) (Multiple Choice) 10. Which strategy do you like most for its treatment of the Hyman/Galena intersection? (Select only one) 11. Which strategy do you like most for its treatment of Galena Plaza? (Select only one) (Multiple Choice) 12. Which strategy to you like most for its alignment of the Cooper/Galena intersection? (Select only one) (Multiple Choice) 0 1 6 15 None of the above Curb lines stays as is (30’ crossing) Modify west curb only (25’ crossing) Modify west/east curbs (20’ crossing) 0 2 8 11 None Alt 1 –Maintain Tree Bosque Alt 3 –A Plaza for Temporary, Rotating Art Alt 2 –Community Table/Water Table under Trees 0 1 2 11 None of the above Curb lines stays as is with crosswalk Curb lines stay as is with change of material East curbline expands to narrow travel lane 1 1 8 11 Alternative 1 –Casual Seating None Alternative 2 –Multi- Purpose/Flexible Games Area Alternative 3 –Relocated Restroom 3 4 8 9 None Alternative 1 –Sidewalk Connection Alternative 2 –Garden/Flower Display Alternative 3 –Urban Plaza 1 2 3 16 None Alternative 1 –Repaired, Raised Water Alternative 3 –Cascading Water Alternative 2 –Rebuilt Edges for Seating P148VII.A. 140 13. Which strategy to you like most for its alignment of the Cooper/Galena intersection? (Select only one) 15. In terms of safety and accessibility, what is your opinion of the snowmelted surfaces shown in Alternative Three? (Select only one) (Multiple Choice) 2 2 7 13 Curb lines stays as is with crosswalk None of the above Curb lines stay as is with change of material East curbline expands to narrow travel lane 1 5 7 8 None Alternative 2 –Middle Aisle Only Alternative 1 –Storefront and Middle Aisle Alternative 3 –Along Ditches 3 20 Snowmelt is not acceptable Snowmelt is acceptable 14. Which strategy do you like most for its treatment of outdoor dining? (Select only one) (Multiple Choice) STAKEHOLDER SESSION II 0 1 1 3 8 10 I don’t know Oppose Strongly Oppose Neutral Support Strongly Support 16. In reference to Alternative 3, how supportive would you be to change of the Wagner Node to strengthen the physical and visual connection to Wagner Park? (Select only one) (Multiple Choice) (Multiple Choice - Multiple Response)P149VII.A. 141P150VII.A. 142P151 VII.A. 143 COMMUNITY OPEN HOUSE II As part of the Community Open House, Design Workshop led a discussion about critical pieces of the project, followed by a series of critical consensus questions. Subsequent pages are a record of these questions and responses. P152VII.A. 144 COMMUNITY OPEN HOUSE II 1. What best describes you?(Select all that apply) (Multiple Choice - Multiple Response) 2. Which of the stated project goals do you feel are top priorities?(Rank your top three) (Priority Ranking) 3. Which elements do you like in “Alternative 1 – Stay the Course”?(Select all that apply) (Multiple Choice - Multiple Response) 4. Which elements do you like in “Alternative 2 – Community Activate”? (Select all that apply) 5. Which elements do you like in “Alternative 3 – Capturing Potential”? (Select all that apply) (Multiple Choice - Multiple Response) 6. Which strategy do you like most for its treatment of Sister Cities Plaza?(Select only one) (Multiple Choice) 0 6 7 13 14 15 16 16 18 None Treatment of Sister Cities Plaza Playground –Imagination Reconstruction of Visitor Kiosk Connection to Durant Avenue Movable Adirondack or Swinging Chairs along Wagner Park Realigned shade trees in South Mill area Flexible Games Area (i.e. Bocce, Bowling) Community Table/Water Table 1 7 11 14 15 16 17 18 20 None Flexible Playground Art Plaza Flexible Games Area (i.e. Bocce, Bowling) Realigned Shade Trees on South/North Mill Street Shade Pavilion Relocation of Restroom Misting Fountain Connection to Durant Street – Urban Plaza 0 2 5 21 None Alt 2 –Sister Cities Bands with Maintained Circle Alt 1 –Sister Cities Bands Integrated in Historic Node Alt 3 –Sister Cities Bands in Misting Fountain/ Event Area 0 0 1 1 3 6 9 13 17 I am a seasonal resident of Aspen I own a secondary home in Aspen I attend school in Aspen Other I visit/recreate in Aspen I am a business owner/ manager in Aspen I am a resident of Roaring Fork Valley (not Aspen) I work in Aspen I am a primary resident of Aspen 1 6 9 13 15 16 23 Address ADA accessibility Improve stormwater quality Encourage retail and restaurant activity Encourage pedestrian activity Maintain park-like character Upgrade utilities to meet future needs Maintain historic character 2 8 11 12 13 14 16 19 None Redesigned Sister Cities Plaza Removal of Firepit Playground - Nature-Inspired Reconstruction of Visitor Kiosk Connection to Durant Avenue Restored trees in South Mill area Expanded edge/seating along Wagner Park P153VII.A. 145 COMMUNITY OPEN HOUSE II 7. Which strategy do you like most for its treatment of South Mill Street?(Select only one) (Multiple 8. Which strategy do you like most for its connection to Durant Avenue? (Select only one) (Multiple Choice) 9. Which strategy do you like the most for its connection to Ki Davis Fountain? (Select only one) (Multiple Choice) 10. Which strategy do you like most for its treatment of the Hyman/Galena intersection? (Select only one) 11. Which strategy do you like most for its treatment of Galena Plaza? (Select only one) (Multiple Choice) 12. Which strategy to you like most for its alignment of the Cooper/Galena intersection? (Select only one) (Multiple Choice) 1 1 5 20 Curb lines stays as is (30’ crossing) None of the above Modify west curb only (25’ crossing) Modify west/east curbs (20’ crossing) 0 2 6 18 None Alt 1 –Maintain Tree Bosque Alt 3 –A Plaza for Temporary, Rotating Art Alt 2 –Community Table/Water Table under Trees 0 1 3 22 None of the above Curb lines stays as is with crosswalk Curb lines stay as is with change of material East curbline expands to narrow travel lane 1 3 8 16 None Alternative 1 –Casual Seating Alternative 2 –Multi- Purpose/Flexible Games Area Alternative 3 –Relocated Restroom 0 1 14 14 None Alternative 1 –Sidewalk Connection Alternative 2 –Garden/Flower Display Alternative 3 –Urban Plaza 1 3 8 16 None Alternative 1 –Repaired, Raised Water Alternative 3 –Cascading Water Alternative 2 –Rebuilt Edges for Seating P154VII.A. 146 COMMUNITY OPEN HOUSE II 13. Which strategy do you like most for its treatment of outdoor dining? (Select only one) (Multiple Choice) 15. In terms of safety and accessibility, what is your opinion of the snowmelted surfaces shown in Alternative Three? (Select only one) (Multiple Choice) 1 4 8 14 None Alternative 2 –Middle Aisle Only Alternative 1 –Storefront and Middle Aisle Alternative 3 –Along Ditches 1 4 8 13 None Alternative 1 –Off the Mall (-4 parking spaces) Alternative 2 –On the Mall + Durant Bike Shelter Alternative 3 –Off the Mall + Durant Bike Storage (-4 spaces) 30.77% 69.23% Snowmelt is not acceptable Snowmelt is acceptable 14. Which strategy do you like most for its treatment of bike storage on the mall? (Select only one) (Multiple Choice) 0 1 2 3 5 14 Strongly Oppose I don’t know Oppose Neutral Support Strongly Support 16. In reference to Alternative 3, how supportive would you be to change of the Wagner Node to strengthen the physical and visual connection to Wagner Park? (Select only one) (Multiple Choice) (Multiple Choice - Multiple Response)P155VII.A. 147P156VII.A. 148 STAY UP TO DATE: WWW.ASPENPEDESTRIANMALL.COM QUESTIONS? CALL/TEXT: 970.618.1457 EMAIL: INFO@ASPENPEDESTRIANMALL.COM KATHLEEN WANATOWICZ BUSINESS PROGRAM COORDINATOR P: 970.618.5114 E: KATHLEEN@PRSTUDIOCO.COMP157 VII.A.