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HomeMy WebLinkAboutagenda.council.worksession.20091124MEMORANDUM TO: Mayor and City Council FROM: Aaron Reed, Construction Mitigation Officer THRU: Trish Aragon PE, City Engineer Scott Miller, Capital Asset Manager DATE OF MEMO: November 19, 2009 MEETING DATE: November 24, 2009 RE: Construction Management Plan Modifications REQUEST OF COUNCIL: The Engineering Department seeks Council approval regarding modifications to the Construction Management Plan Requirements Manual. These changes are: • New restrictions for onsite manufacturing • Alterations to the holiday schedule and the creation of a restricted zone to be refered to as the Central Resort Area (CRA) • Streamlining the permitting process for Smuggler Mountain Superfund Soil Removal Permits. PREVIOUS COUNCIL ACTION: City Council approved the creation and implementation of the Construction Mitigation Program in April of 2006, below is a timeline of this program. • Apri12006: the City creates the Construction Mitigation Program to reduce the impact of construction on the general public, to provide a liaison between the City, contractors, and the general public. This is accomplished by requiring contractors to submit a plan detailing how they intended to meet all city codes during construction. • March 2007: the Original Plan Requirement Manual is drafted and presented at a worksession. • Apri12007: edits from the March worksession aze incorporated into the "Plan" these edits included an established haul route, restricting hours from 12 hours a day to 10 hours a day, creation of the Aspen Holiday list which included federal holidays and special events in Aspen like the Food and Wine Classic. • Apri12007: Alteration of start and end time for work days Sam-6pm • May 2007 re-instatement of original start and end times lam-Spm • January 2008: Expansion of the program to include inspections on all active projects regazdless of impact. Additional inspections were also added these included sediment and Page 1 of 4 erosion control, and parking. The table below provides a quantitative description of CMP activities. Activi Sites with CMP's Red Tags Issued Citizen Construction Complaints Construction Parking Permits Encroachment Permits 2009 2008 2007 205 155 29 13 17 45 42 105 81 88 91 No Data 89 179 205 BACKGROUND: • Manufacturine Activities: In April of 2009 the City Manager's Office, Building, Engineering, and Environmental Health Departments began receiving noise complaints from neighbors of 17 Shady Lane regazding stone cutting. After conducting site visits with residents and one with Council it was determined that the contractor was in compliance with the current CMP requirements. However, several neighbors continued to express concern, primarily due to the chronic nature of the situation. • Holiday Hours: In June the Department also processed requests to grant holiday construction closure exemptions to projects in outlying neighborhoods such as Cemetery Lane, McSkimming Lane, in addition to the Commercial Core. • Superfund Permittine: In October the Environmental Health Department, Engineering Department, and Building Department chose to streamline the "Smuggler Mountain Super Fund Site Soil Removal Permit" process by allowing the Engineering Department to take on issuance, tracking, and reporting associated with the requirements under the Smuggler Mountain Super Fund Soils. DISCUSSION: Manufacturine activities: Issue: City staff has received repeated complaints regazding the impacts and duration of specific stone cutting operations. The project located at 17 Shady Lane has a very labor intensive design for stone veneer. This design required labor to cut large pieces of stone (18"x10"x3") into much smaller pieces (6"xl"x3"). This portion of the project lasted for over a year and had a significant impact to the neighborhood. This operation was actually within the limits set by the municipal code, however, the chronic nature of the work created increasingly irritated complaints. Proposed Changes: Staff is proposing modifications to the noise suppression section of the requirements manual to better address the concerns related to long term nuisance issues. These would be activities that have been defined as manufacturing, as well as other noise producing activities that could take place offsite. These modifications would require that all manufacturing Page 2 of 4 activities are conducted offsite, reducing the duration and overall impact to surrounding neighborhoods. Additionally, if a further modification to the material is required to fit the material then hours of operation will be limited to gam-Spm Monday thru Friday. Refer to Sections 11.3 and 11.4 of Attachment "A" for the proposed changes to the Construction Management Plan Holidav Hours: Issue: The Current manual requires that all construction sites within the City of Aspen are closed for construction during designated holidays. During some of these closures, especially the Food and Wine Classic and Christmas week, several exemptions aze granted to contractors in outlying areas with the understanding that the work will have less of an impact to the resort feel of the community. Proposed Changes: Staff is proposing a new geographic zone in town to help address the impacts of construction while at the same time maintaining the resort feel of the community. This zone is being referred to as the Central Resort Area (CRA). The geographic boundaries minor the expanded pay to pazk area. This boundary was chosen because the azea is impacted heavily during special events and the winter /summer tourist season. The adoption of the CRA would allow work in the "non-core" neighborhoods that which are less impacted during the peak seasons. The boundaries of this zone would extend from Cleveland Street west to First Street and from Summit Street North to Francis Street. Refer to Attachment `B". Below is a summary of the current requirements and the proposed changes to the holiday closures for construction. The changes allow for additional work days outside of the CRA, increasing production during the holidays and certain special events in Aspen. Thanks Xmas Xmas New Years Presidents Memorial Food 4` of Labor giving Week Day Day Day Day & July Day Wine Current Restriction Entire City closed closed closed closed closed closed closed closed closed Limits Proposed Restriction Central Resort closed closed closed closed closed closed closed closed closed Area CRA Outside CRA closed open closed closed open closed open closed closed i.e. "non-core" Refer to Section 4_2 of Attachment "A" for the proposed changes to the Construction Management Plan Sunerfuud Permittiue: Page 3 of 4 Issue: The Current process requires that additional departments make onsite inspection to provide oversight and confidence that requirements are met. Tracking of sites activities takes place in multiple departments within the City, and this has lead to some delays in identifying projects with a smaller impact. Proposed Changes: City staff has made alterations to the Smuggler Mountain Superfund Site Soil Removal Permit to stream line the process and ensure the sites are captured in regular inspections. Efficiency and customer service will be improved by having one less department sign-off on building permits, and by having construction mitigation staff already onsite monitoring superfund compliance. Refer to Section 8_2 of Attachment "A" for the proposed changes to the Construction Management Plan. FINANCIAL IMPLICATIONS: Staff does not anticipate additional costs to the City, however, potential costs to contractors specifically relating to offsite manufacturing, may be increased. Contractors may also realize a financial gain by allowing work outside of the CRA, and therefore increasing production during specific holiday periods. ENVIRONMENTAL IMPACTS: Limiting onsite manufacturing will ensure more reasonable noise impacts on neighbors during construction projects. Allowing construction in non-core neighborhoods on certain holidays will have noise impacts, but they are not likely to be significant. Having Smuggler superfund site permitting done by CMO's who are already onsite will provide better oversight of institutional controls. RECOMMENDED ACTION: City staff recommends the adoption of new policies outlined above as well as the adoption of the Central Resort Area. ALTERNATIVES: Council may select any of the above recommendations asalterations to the current Requirements Manual. CITY MANAGER COMMENTS: ATTACHMENTS: Attachment A: Construction Management Plan Attachment B: Central Resort Area Map Page 4 of 4 Attachment A THE CITY OF ASPEN CONSTRUCTION MANAGEMENT PLAN REQUIREMENTS MANUAL Construction projects that exceed 1000 SF of soil disturbance and/or 400 SF of building demolition, improvement, or renovation (interior and/or exterior) must submit a construction management plan in accordance with this manual. Prepared by: Engineering Asset Management Department 130 S. Galena St. Aspen CO 81611 970.920.5080 November 2009 Please provide: 2 Paper Documents -Engineering Department 1 Electronic Document - EngineerCity@ci.aspen.co.us Specifics: 8.5 x 11 or 11x17 sheets only & 2-hole punch Revised 11/16/09 City of Aspen TABLE OF CONTENTS 1.0 GENERAL 1.1 PURPOSE 1.2 APPLICABILITY 1.3 DEFINITIONS AND TERMS 1.4 REFERENCES 2.0 PROJECT INTRODUCTION 2.1 DISTURBANCE AREA 2.2 LOCATION 2.3 DESCRIPTION 3.0 PROJECT DOCUMENTATION 3.1 PERMITS /OTHER DOCUMENTS 3.2 PUBLIC NOTIFICATION 3.3 PROJECT SIGN 3.4 CONTACT DESIGNATION 4.0 PROJECT IMPLEMENATION 4.1 DATES OF CONSTRUCTION 4.2 HOURS OF CONSTRUCTION 4.3 SEQUENCE (PHASING) OF CONSTRUCTION 4.4 ADJOINING PROPERTY OWNERS 4.5 PROJECT FENCING 4.6 PUBLIC HEALTH AND WELFARE 4.7 NATURAL ENVIRONMENT 5.0 PARHING MANAGEMENT 5.1 PARKING MANGEMENT FORM 5.2 EMERGENCY VEHICLE ACCESS AND ORDINANCE 35 5.3 CONSTRUCTION PARKING DETAILS 5.4 STAGING AREAS 5.5 CONSTRUCTION TRAILER, MATERIALS STORAGE, AND WASTE MANAGEMENT 6.0 TRA1 6.1 6.2 6.3 6.4 6.5 ?FIC CONTROL GENERAL HAUL ROUTES ONSITE VEHICLE LIMITATIONS DELIVERY REQUIREMENTS TRAFFIC CONTROL PLAN 7.0 PEDESTRIAN PROTECTION 7.1 GENERAL Revised 11/16/09 2 City of Aspen 8.0 SEDIMENT AND EROSION CONTROL 8.1 REQUIREMENTS 8.2 SMUGGLER MOUNTIAN RESTRICTIONS 9.0 FUGITIVE DUST CONTROL 9.1 FUGITIVE DUST CONTROL PLAN 9.2 REQUIREMENTS 10.0 EMISSIONS 10.1 GENERAL 10.2 EMISSIONS FROM DIESEL POWERED ENGINES 11.0 NOISE SUPRESSION 11.1 GENERAL 11.2 NOISE SUPPRESSION PLAN 11.3 REQUIREMENTS 11.4 SPECIFIC RESTRICTIONS RELATED TO MANUFACTURING ON SITE 12.0 ENFORCEMENT 12.1 CONSTRUCTION MITIGATION OFFICER 12.2 CORRECTIVE ACTION 12.3 INSPECTION REPORTS APPENDICES A -Required Project Sign B -Parking Management Form C -Haul Route Map D -Noise Suppression Plan, Techniques and Equipment E -Smuggler Mountain Superfund Site Map F -Central Resort Area Map Revised 11/16/09 3 City of Aspen ~ 1.0 GENERAL 1.1 PURPOSE The purpose of this Construction Management Plan Manual is to provide a consistent policy under which certain physical aspects of construction management will be implemented. The elements contained in this document are related to the development process. It is intended that they apply to both public and private work designated herein. These standards cannot anticipate all situations. They are intended to assist, but not to substitute for competent work by design and construction professionals. The City of Aspen does not intend to limit any innovative or creative efforts that could result in better quality, greater cost savings, or both. Any proposed departure from the manual will be judged on the likelihood that such variance will produce a comparable result, adequate for the user and City resident over the duration of the improvement/project. If the project changes ownership or contracting services change, the City Engineering Department must be notified, and must agree to comply with an approved CMP in writing. Any departure from the approved CMP must be submitted in writing and approved by the City Engineer. The approved construction management plan must be kept onsite. 1.2 APPLICABILITY This manual shall govern the construction and development of all public and private construction projects in the City of Aspen. These regulations shall apply to all commercial, industrial, residential, and mixed use developments which disturb 1000 SF or greater or require demolition, improvement, or renovation (interior and/or exterior) of 400 SF or greater within any twelve-month period. 1.3 DEFINITIONS AND TERMS Construction Management Plan - A Construction Management Plan is a combination of diagrams, documents, drawings, and specifications that clearly define the steps that will be taken to demonstrate how the impacts to the community will be minimized. How the impacts associated with any construction project will be managed. Herein described as "Plan" throughout the remainder of this policy. Construction Mitigation Officer - An appointed employee of the City of Aspen whose charge is to ensure that all aspects of a Construction Management Plan are followed, and to further ensure that the impacts associated with construction activities within the City of Aspen aze effectively managed and impacts associated with those projects are the least necessary to accomplish the project. Disturbance Area - A portion of land where topsoil or native soils have been removed for purposes of construction (development). Revised 11/16/09 4 City of Aspen Best Management Practices (BMP's) -Schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the state. BMP's also include treatment requirements, operating procedures, and practices to control site runoff, spillage or leaks, waste disposal, or drainage from material storage. Tree Dripline and Protection Zone -Use the longest branch of the tree as a radius from the center of the tree and make a circle. The circle is then defined as the dripline and thus is the tree protection zone. Final Stabilization -Uniform vegetative cover has been established with a density of at least 70 percent ofpre-disturbed levels. 1.4 REFRENCES A. City of Aspen Policy 205-A Right-Of--Way Permit Requirements B. City of Aspen Policy 204-A Revocable Encroachment License Application C. City of Aspen Construction and Mitigation Standards for Work in the Public Rights-of--Way D. City of Aspen Municipal Code Titles 13, 21, and 26 E. City of Aspen Ordinance 35 F. Manual on Uniform Traffic Control Devices for Streets and Highways - 2003 Edition G. Colorado Deparhnent of Public Safety General Permit Part IB H. Colorado Department of Transportation M&S construction standards I. Colorado Department of Public Health and Environment -Air Pollution Control Division 2.0 PROJECT LOCATION 2.1 DISTURBANCE AREA The Plan shall describe and compute the total project disturbance area. Soil disturbance shall be kept to a minimum. Construction staging and phasing shall occur, where applicable, to minimize soil disturbance time. 2.2 LOCATION A project vicinity map shall be included in the Plan. The map should accurately depict general project location within the City of Aspen and also delineate project extents. The map shall be a scaled drawing that includes a directional arrow and adjacent street descriptions. 2.3 DESCRIPTION The Plan shall include an overview of the construction project including background information, proposed development type and general information. The proposed effect on public utilities such as storm sewer, sanitary sewer, water main, etc. should also be described. Revised 11/16/09 City of Aspen 3.0 PROJECT DOCUMENTATION 3.1 PERMITS /OTHER DOCUMENTS The contractor shall maintain all applicable local, state and federal licenses and permits that apply to the construction project. Applicable permits shall be listed, described and copies of the documents shall be attached in Plan appendices. In addition to permits all PUD's, Subdivision Improvement Agreements, and Related City Ordinances must also be attached in the Plan appendices. 3.2 PUBLIC NOTIFICATION A project update shall be provided to the public on a basis no less than monthly, via website, newspaper, on-site notices, or other accepted means of notification (per request of the City of Aspen). The first public notification shall occur no later than 10 days prior to construction. The update shall include a description of the current project phase, list any traffic and/or pedestrian concerns, and describe hauling/staging operations. The above notification shall specifically be distributed to neighbors located within 300 feet of the project property. The Plan shall designate a project representative, date, and time for a required preconstruction meeting. The purpose of the meeting is to discuss the project and summarize the project specific Construction Management Plan. The contractor and subcontractors are required to attend the meeting. Utility personnel, applicable City departments, the Roaring Fork Transit Authority, neighboring property owners, and the Aspen School District shall also be notified. 3.3 PROJECT SIGN A project sign shall be constructed and posted that includes the items shown in Appendix A: Required Construction Sign. The sign shall be posted in a location where it is readable from the street or driveway and shall meet criteria in City Municipal Code 26.510.030B4. 3.4 CONTACT DESIGNATION The Plan shall have a contact list with associated phone numbers located at the front of the document. The list will include: the owner, contractor appointed overall site supervisor, a state certified safety officer, a state certified traffic control officer, and a state certified erosion control representative. Other information shall include city and county phone numbers, fire department, police department, Roaring Fork Transit Authority (BETA), school district, and all applicable utility company contact infonmation. The contact list should include hospital contact information and the Emergency 911 reminder. Revised 11/16/09 City of Aspen 4.0 PROJECT IMPLEMENTATION 4.1 DATES OF CONSTRUCTION Dates of construction shall be specified in the Plan. Any work being performed within City ROW shall be completed as per the City of Aspen Right of Way permit requirements. 4.2 HOURS OF CONSTRUCTION Construction hours shall be limited to lam -Spm Monday through Friday and gam - Spm on Saturday. No construction is permitted on Sundays, a••~~° ~'°°a °• "'~°° r'°°*~- °~ ~° r••°°'~'-~-'°° •'•~• e°••a°°` 4`n of July day and/or weekend if it falls on a Friday or Monday, Memorial Day and Labor Day weekends, Thanksgiving Day, Christmas Day, New Yeazs Day. °~a a..a..,. «,.° ~,._:....,,°.. .. °°,. i,,~i~c , i, ~_ During Presidents Day, the Food & Wine Festival in June (Friday thru Sunday) and during the Christmas week (12/25-1/1) projects located in the Central Resort Area are not permitted to work. These areas are defined in Appendix F. All activity that generates noise in excess of 80 decibels requires a noise suppression plan and is restricted to operating between the hours of gam and Spm Monday through Friday. 4.3 SEQUENCE (PHASING) OF CONSTRUCTION A construction schedule including all project phasing, with item details, and specific item completion dates or duration of phasing is required. The schedule shall be developed using Microsoft Project or a program of greater capabilities as approved by the Engineering Department. 4.4 ADJOINING PROPERTIES No person shall excavate on land close enough to a property line to endanger any adjacent public street, sidewalk, and alley, other public or private property, or easement, without supporting and protecting the property from any damage that might result from construction operations. 4.5 PROJECT FENCING All construction areas shall have anon-removable construction fence or other approved device securely placed around the areas to be protected. The fence shall be six feet (6') in height and constructed out of chain-link fence with mesh windscreens (visual barriers). Decorative construction fences may be allowed at the discretion of the City Engineer. Please see Section 11 for fencing noise suppression techniques. Revised 11/16/09 7 City of Aspen 4.6 PUBLIC HEALTH AND WELFARE All construction projects located within the City of Aspen shall uphold utmost respect to public health and welfaze and be reflected in prepared Plan. 4.7 NATURAL ENVIRONMENT Project construction shall be oriented to minimize harm to all aspects of the City of Aspen's natural environment. All tree and natural resource protection measures must be identified in the Plan and in place prior to the commencement of any construction or demolition activities. Refer to section 13.20.020b of the Municipal Code for tree protection and removal requirements and process. The Plan must contain a site map showing exact tree protection fence location and accurate tree driplines (refer to Section 1.3 for dripline definition). Proposed projects should be consistent with the character of existing land use in the surrounding area. 5.0 PARHING MANAGEMENT 5.1 PARKING MANAGEMENT FORM A Parking Plan must be requested, specified and submitted as part of the CMP. 5.2 EMERGENCY VEHICLE ACCESS AND ORDINANCE 35 The contractor shall maintain continuous emergency vehicle access, on and azound site, including but not limited to police, fire, and ambulance services. This includes projects adjacent to roads and alleys. All Plans shall include a cony and show compliance with Ordinance 35. 5.3 CONSTRUCTION PARKING DETAILS Specific construction pazking spaces/areas may be requested for use by craftsman, subcontractors, and contractors involved in the site construction process. The City allows minimal onsite parking with public transportation as the preferred method of transportation. Transportation options may include, but aze not limited to carpool, vanpool, public transportation, paid shuttle for transporting workers to the site, etc. No construction parking will be permitted within the free two-hour residential parking areas without a valid permit. 5.4 STAGING AREAS The Plan shall specify construction staging azea locations. Alleyways are preferred short term staging locations without blocking access to neighboring properties. The number of truckloads expected to and from the site should be estimated (including soil Revised 11/16/09 City of Aspen hauling and materials transport). The timing and duration of the transport vehicles should also be noted. City of Aspen personnel can limit project staging locations, number of trucks, and duration of operations depending on project location and site sun•oundings. Projects that require crane operations and have little or no setbacks aze required to use a tower crane. The City prefers electric type cranes to reduce noise and fumes. Right-of--Way encroachments are used as a last resort in all cases. In the case where a ROW encroachment occurs, a permit must be obtained from the City Engineering Department. 5.5 CONSTRUCTION TRAILER, MATERIALS STORAGE, AND WASTE MANAGEMENT As specified in Section 5.1, construction trailer, job materials storage, portable restrooms, waste management and recycling container locations shall be clearly designated on the project site plan. Loose job material storage is not allowed in ROW under any circumstance. The City of Aspen Engineering Asset Management Department strongly recommends job trailer, waste management containers, and portable restrooms be stored on private property and not within City ROW. The City of Aspen re uires recycling of construction materials. In instances where recycling containers cannot be accommodated onsite, the City Engineering Department will consider locating recycling containers within public ROW where feasible. The encroachment permit fee will be waived if it pertains to recycling containers. If at any time such a container is not being used for recycling operations, the property owner will be responsible to pay at least three months calculated land lease fee. The City of Aspen requires recycling of materials, both conventional and construction related, according to this document and City of Aspen Municipal Code (26.575.060). Recycling requirements included in this section do not supersede project specific Efficient Building Program (EBP) requirements. Project site conventional recycling of co-mingled materials (plastics #1-#7, tin, aluminum, and glass), and cardboard must have an assigned space/area and be separated on-site during the project. These materials may not be disposed of in the trash. During the demolition phase of a project, deconstruction related activities aze required (recycling and/or salvaging). Concrete and scrap metals must be sorted and kept separate on-site and must have an assigned space/area. Revised 11/16/09 City of Aspen Field inspections will occur throughout the permit process. If sorting of materials is not occurring onsite, other means of verification may be provided to City of Aspen as deemed appropriate. Per municipal code, any dumpster or other trash receptacle that is used for food refuse must be constructed in such a manner as to render it bear proof. All containers shall be adequately covered at all times until transferred to the landfill. The City of Aspen municipal code states it shall be unlawful to permit accumulated debris, litter, or trash on any construction site to blow or scatter onto adjoining properties. An onsite hazardous material spill cleanup kit is required, as specified by the City Engineer, that contains, at a minimum, a 25 pound bag of Floor-Dri (or equal), absorbent pads, and other spill kit materials. 6.0 TRAFFIC CONTROL 6.1 GENERAL All traffic control operations shall be managed by the designated certified traffic control supervisor. 6.2 HAUL ROUTES The City of Aspen has designated specific project haul roads throughout the City (Appendix C). The project must follow the designated routes and specify any additional routes necessary to complete hauling operations. Project haul routes shall be oriented to minimize traffic congestion and maximize pedestrian safety. 6.3 ONSITE VEHICLE LIMITATIONS All construction related vehicle activities shall be defined. Maximum vehicle weights and sizes shall be specified. 6.4 DELIVERY REQUIREMENTS Traffic control required for deliveries must be fully coordinated with the City of Aspen Engineering Deparment. Roads will not be closed under any circumstances, unless granted permission from the City of Aspen Engineering Department. The maximum number of delivery vehicles onsite must be specified, along with the hours the deliveries will occur, and any exceptions to the delivery schedule. Delivery and Heavy Duty Vehicles must have a visible sign on the vehicle that specifies the project contractors name and phone number. Delivery vehicles and all other onsite vehicles are not allowed to idle for more than five (5) minutes, with the exception of generators or PTO type operations. The general contractor must include an idling policy in the Plan that meets City requirements. Revised 11/16/09 10 City of Aspen 6.5 TRAFFIC CONTROL PLAN A preliminary Traffic Control Plan (TCP) shall be submitted as part of the Construction Management Plan if necessary to be determined by City Engineer. The TCP shall be completed by a State Certified Traffic Control Supervisor and must conform to the most current edition of the Manual of Uniform Traffic Control Devices for Streets and Highways (MUTCD). The TCP shall contain all information specified in Section 6C.01 of the MUTCD. A School Traffic Control Plan should be submitted in addition to the TCP in school areas according to Chapter 7A of the MUTCD, If the project is not located in a school area, but abuts a school bus stop or school walk route, extra traffic control personnel and devices shall be implemented to ensure school pedestrian safety. 7.0 PEDISTRIAN PROTECTION 7.1 GENERAL The Plan shall comply with pedestrian safety per City code 21.04.060, MUTCD Chapter 6D, the Americans with Disability Act, and IBC Chapter 33. 8.0 SEDIMENT AND EROSION CONTROL 8.1 REQUIREMENTS A Storm Water Pollution Prevention Plan shall be completed along with the CMP, according to Colorado Department of Public Health and Environment Water Quality Control Division General Permit Part IB. The main objective of the storm water management plan shall be to identify Best Management Practices, which will minimize erosion and sediment transport. In addition to the Colorado Discharge Service Permit (the program) requirements, the following apply: 1. Stock piles must be protected with erosion control devices. 2. Mud tracking ramps (rock construction entrances) are required and implemented per the most current version of the Colorado Department of Transportation M&S construction standards. 3. Onsite concrete and tire washout stations aze required. Location and operation procedures shall be described in Plan. 4. City inlets, gutters, swales and irrigation ditches shall be protected with erosion control devices and such projection maintained for the duration of the project. 5. A description of procedures used to protect and maintain in good and effective operating condition the erosion sediment control measures until final stabilization is required. Revised 11/16/09 11 City of Aspen Onsite sediment and erosion control operations shall be managed by a state certified erosion control supervisor. 8.2 SMUGGLER MOUNTAIN RESTRICTIONS All projects located within the Smuggler Mountain Superlimd Zone (Appendix E) are required to meet additional standards for erosion control measures and are required to file an additional soil removal permit. These requirements shall be instituted on all projects disturbing (excavating or exposing) more than one cubic yard of soil. All projects located in the superfund site will also be required to handle disturbed and excavated soils with an additional level of care. 1. A Smuggler Mountain Superfund Site Soil Removal Permit must be completed prior to any soil disturbance in this area. (Appendix E) 2. All contaminated soils must be disposed of at a duly licensed and authorized facility, usually the Pitkin County Landfill, and the receiving location must be made aware of the contaminated nature of the soils. 3. Soils must be contained and covered at all times unless actively being worked. Working will be defined as moving, compacting, backfilling, exposing, or grading the soils at least once in a sixty minute period. If any stockpile of soil is to be left for more than sixty minutes it must be contained and covered. 4. Containment and Covering is required. This can be accomplished tlrrough the use of anon-permeable tarp placed below the stockpile and the same type of material shall be used to cover the stockpile. 5. After completion of the project an uncontaminated soil cap will be required. This cap shall consist of twelve inches of clean fill or gravel. This can also be accomplished by paving the area with asphalt or concrete. 6. In order to obtain a "clean letter" from the City of Aspen, which, will be required prior to the release of the Certificate of Occupancy, all of the above conditions roust be met. 9.0 FUGITIVE DUST CONTROL 9.1 FUGITIVE DUST CONTROL PLAN All projects that result in fugitive dust emissions must submit a fugitive dust control plan and file an application for a construction permit with the Colorado Department of Public Health and Environment. The approval of a Dust Prevention and Control Plan does not relieve the owner or contractors of the responsibility to implement whatever additional measures may be required by the City Engineer to properly prevent and control dust. Revised 11/16/09 12 City of Aspen 9.2 REQUIREMENTS The plan shall demonstrate that the discharge of dust from the construction site will not occur, or can be controlled to an acceptable level depending on the particular site conditions and circumstances. 1. The plan shall address site conditions during construction operations, after normal working hours, and during vazious phases of construction. 2. The plan shall include the name and the 24 hour phone number of a responsible party. 3. If the importing or exporting of dirt is necessary, the plan shall also include the procedures necessary to keep the public streets and private properties along the haul route free of dirt, dust, and other debris. 4. When an entire project is to be graded and the subsequent construction on the site is to be completed in phases, the portion of the site not under construction shall be treated with dust preventive substance or plant materials and an irrigation system. 5. All phased projects shall submit a plan demonstrating that dust will not be generated from future phase areas. For all construction within the site, the contractor shall have a water truck available for dust control. Wetting shall be completed once three times a day under dry conditions or as directed by the City Construction Mitigation Officer. Vehicle speeds should not exceed 15 mph on construction access roads and construction site. 10.0 EMISSIONS 10.1 GENERAL All vehicles and equipment used on site will be properly maintained such that the engines will function within manufacture's standards or parameters. 10.2 EMISSIONS FROM DIESEL POWERED ENGINES Emissions from diesel engines operated within the City of Aspen shall be of a shade or density no darker than 40% opacity, except for starting motion no longer than 10 seconds or for stationary operation not exceeding 10 seconds. 11.0 NOISE SUPRESSION 11.1 GENERAL The noise limit for construction is 80 decibels measured at the property line of the construction site. All construction equipment shall be adequately muffled and maintained to minimize project noise. The installation of noise bazriers is the minimum technique to suppress noise, especially when jack hammering of concrete occurs. Revised 11/16/09 13 City of Aspen 11.2 NOISE SUPPRESSION PLAN All activity that generates noise in excess of 80 decibels at the property line requires a plan and is restricted to operating hours identified below. The plan will include information on noise blocking methods, techniques, and common equipment and activities that require noise suppression_(Refer to Appendix D). 11.3 REQUIREMENTS FOR ACTIVITIES EXCEEDING 80 DECIBELS 1. includes but not limited to the use of compressors, generators, jackhammers, power equipment, nail puns, drilling machinery, earth moving equipment and similar loud construction activities. This does not restrict quiet work inside and outside that does not require a power source, including a battery, on Saturday. 2. Notify neighbors within two hundred fifty (300) feet of the project informing them of the kinds of equipment, expected noise levels and durations of loud work. Including the variation of noise levels during a typical construction days may be helpful. Such notification must be in writing and be done seven (7) days prior to the starting time of the project. Communication with neighbors can prevent complaints from arising, and resolve concerns before there is a problem. Provide a phone number where the foreman can be reached prior to the start of the job. 3. Operate equipment in accordance with manufacturer's specifications and with all standard manufacturers' mufflers and noise-reducing equipment in use and in properly operating condition. 4. Post notices to inform workers, including sub-contractors, about the basic noise requirements, as well as specific noise restrictions, to the rp oiect. 5. Install noise barriers around all equipment/activities specified in Table 1 of Appendix D Noise barriers not only significantly reduce construction noise, but they also provide an extra benefit of "hiding" the noise producing sources, thus increasing a neighbor's tolerance. 6. Move portable loud equipment including generators, compressors, and cement mixers to different sides of the property to reduce impacts on individual neighbors. 7. The use of radios on the site before 8:00 am is not allowed. Revised 11/16/09 14 City of Aspen 11.4 Specific restrictions related to manufacturing on site. restrictions will be placed on those activities. The primary concern is that extending the manufacturing efforts must be conducted off site or in such a manner as to not contribute to any long term noise impacts off of the property. Activities will be considered manufacturing if alterations to a material that is readily was delivered as a rough cut product to the site and each of the stones were to be cut square and fit into place. In this example the stone cutting is considered the additional work to fit the stones would be permitted on site. All work which requires a limited amount of additional manufacturing to achieve the 12.0 ENFORCEMENT 12.1 CITY CONSTRUCTION MITIGATION OFFICER A City Construction Mitigation Officer shall be assigned to each construction project. The City Construction Mitigation Officer will complete random site visits to determine if the project is following approved Plan and City requirements. The officer is not intended to take the place of a City of Aspen building inspector. 12.2 CORRECTIVE ACTION The City of Aspen will enforce construction mitigation corrections as follows: 1. The first corrective action is a verbal warning and explanation of the violation with a timeframe for wmpletion. 2. The second corrective action is a written warning or correction notice with timeframe for compliance. 3. Third and final notice is a "Stop Work Order" (red tag). If a stop work order is issued, no more work can be completed until the violation is corrected. Failure to correct violations and/or any threat to public safety could subject the owner, contractor or both to a fine of $1000 a day as determined by the municipal court. Revised 11/16/09 15 City of Aspen 12.3 INSPECTION REPORTS The Construction Mitigation Officer will complete construction inspection reports. All reports are public and will be kept in the City Engineering Asset Management Department. Revised 11/16/09 16 Attachment B m m 0 0 ~a m s U Z ~~ n~ W 'O nV/' W ~~ W U 0 MEMORANDUM TO: Mayor and City Council FROM: Engineering Department Tyler Christoff, Project Manager Trish Aragon, City Engineer THRU: Randy Ready, Assistant City Manager DATE OF MEMO: November 20`~ 2009 MEETING DATE: November 24, 2009 RE: Main Street Pedestrian Safety Improvement Options SUMMARY: Staff is updating City Council on current Main Street pedestrian safety, issues, concerns and projects. PREVIOUS COUNCIL ACTION: In 2004, Aspen City Council directed staff and provided funding to implement the Following pedestrian/traffic improvements. • Purchase and installation of new on street Yield to Pedestrian signage • Purchase of four new radar trailers for use by the Police Department • Improved crosswalk striping with new applicator. Installation of pedestrian activated beacons at key locations In 2005, City Council authorized Tabor funding for several pedestrian projects. These projects included the Main Street Sidewalk connection between 5`h and 7`h, various ADA ramp improvements throughout the City among others. Ina 2008 City Council Work session, staff was directed and provided funding to implement the following pedestrian/traffic improvements: City Council directed the committee to move forward with Main Street Median design, Mill Street/Rio Grande Improvements Design, East of Aspen Pedestrian Connection Design, and Gibson Ave sidewalk construction. Two or three electronic speed signs were to be purchased and placed in various locations (with solar panels) in the City. This item was later removed from the 2009 Budget due to lack of funds. City Council identified pedestrian improvements along Aspen's Main Street as one of the ten Best Year Yet Goals to be complete by the end of 2009. Staff pursued development of the project in an accelerated time frame based on Council direction to construct a one (1) block "test" section of an enhanced pedestrian crossing azea to Main Street as soon as possible. This project attempted to create safer and easier pedestrian crossings of Main Street at the intersections through the use of center planted medians, enhanced pavement materials, street plantings and improved lighting at strategic locations. The Main Street Streetscape project would have a secondazy, equally important benefit by enhancing the visual quality of the comdor for both motorists and pedestrians. Staff and SGM presented the proposed design as it has been developed to date to the HPC Boazd on Januaryl4th 2009. The HPC members did not support the proposal as presented, expressing criticism to the idea of any kind of raised landscape medians in the center of the Main Street con•idor. The HPC believed that center landscaped medians were "too urban", and a change that was completely out of historic chazacter of a wide open corridor flanked by tall stately street trees. Staff held a Public Open House, January 28`h in City Council Chambers to solicit public comment on this proposal. After a public open house and a subsequent City Council work session the Main Street Median Project was tabled. However, funding is still required to close out this project. Remaining funding from the Main Street Median project was set aside be used to design and implement alternative pedestrian improvements along the Main Street Corridor. BACKGROUND: Staff examined various treatments in addition to or in replacement of central medians. Various factors including general safety, precedence, space constraints, maintenance, accepted engineering design practices and climate have made these alternatives infeasible. Below is a summary of the alternatives examined by staff and subsequent reasons why these alternatives are not recommended: Temporary Median Planter Boxes -This treatment would involve placing a number of large landscaped planter boxes along the centerline of Main Street to create a temporary and removable median treatment. Constraints: Planter boxes create a crash hazard on high volume roadways such as Main Street. During a meeting with Colorado Department of Transportation (CDOT) representatives it became clear that this would not be an approved treatment in CDOT right of way due to crash hazards. Intersection Bulb Outs -Bulb outs would change the existing Curb line at pedestrian crossings. This `bulb' would allow for shorter crossing distances and increased pedestrian visibly. Constraints: Bulb outs cannot be placed in RFTA bus routes. Due to the turning radius of RFTA buses and the outbound bus lane, this treatment would have limited application. Street maintenance and snow plowing activities would also be impacted. In addition bulb outs are difficult to for non vehicular traffic such as bicycles to navigate due to the changing lane width, and unpredictable interactions with traffic. Pedestrian Flags -This pedestrian program is intended to change driver behavior and increase pedestrian visibility by providing cross walk users a small flag to carry as they cross the roadway. Constraints: Current municipalities with flag programs have no Engineering studies to provide data on the program. Communities with this program report an average use rate around 18% among pedestrians. Large scale public education campaigns have been launched in communities whose program has lasted more than 3 years. These public outreach campaigns have been critical in keeping these programs operational. Staff time is required to replace and move flags. Flag usage tends to distribute flags unevenly; staff is then required to periodically redistribute the flags in order for the program to function. High theft rates of flags and flag infrastructure occur. Studies done by psychology students have shown no change in driver behavior when pedestrians with flags are present. Various cities including Berkley, California have eliminated the flag program after a year due to lack of participation and the drain on City resources. Pedestrian Activated Flashing Lights -Flashing light systems similaz to the ones in place on the Original Curve and 8`h Street attempt to alert motorists that pedestrians are in or entering the crosswalk. These systems can be installed adjacent to the edge of pavement or overhead by a traffic signal boom. Constraints: Due to high average daily traffic and limited sight distances these lighting systems have limited effectiveness on roadways like Main Street. The Main Street corridor is filled with obstructions such as historic buildings, landscaping and topography that make these system difficult for motorists to see and respond to. DISCUSSION: The Pedestrian and Traffic Safety committee provided City Council with a list of potential pedestrian improvement projects in July of 2009. Council directed staff to pursue one project related to Main Street. Staff was directed to finance the design and construction of two alternative material crosswalks with funding from the Public amenity fund. Staff is currently developing a request for proposals to begin the design process. In addition to these physical improvements Staff would like to form a citizens Main Street Pedestrian Safety Committee due to the large amount of interest by the general public. Colored/Alternative Material Crosswalks Installation of colored concrete or other alternative material in pedestrian crossing zones on the Main Street comdor provides strong visual delineation of pedestrian crossing zones. Allows unfamiliar motorists to recognize where pedestrians may be present. Staff would recommend a phased installation of these crossings starting at Garmisch Street and working west, and at Hunter Street and working east. Colorado Department of Transportation (CDOT) reacted favorably to this concept during initial meetings because of its benefit to pedestrians. Constraints: Changes to the CDOT Right of Way will require approval. Treatment is difficult to see in the winter. Deterioration possible from current to snow plowing activities. Cost.• $25,000 per crossing Formation of a Citizen's Main Street Pedestrian Safety Committee Due to the large amount of public interest in Main Street pedestrian safety staff has suggested that a Citizens committee be formed. Residents who have expressed interest in pedestrian safety and Main Street will be contacted; in addition staff will advertise the formation of this body in local newspapers and on the City's website. Staff will run meetings with this committee to gather citizen input and present the opportunities and constraints of the current Main Street corridor. Constraints: Citizen guidance must be appropriate for the given site and be approved by CDOT and the City's Engineering Department to recommended as appropriate treatments for Main Street. Cost: Staff time depending on the duration of this committee. ENVIRONMENTAL IMPACTS: The Aspen Area Community Plan and City Council commitments have directed the community to keeping traffic at 1993 levels in perpetuity. At the same time, Aspen is now considered a maintenance area for PM-10 (particulate) pollution and must continue reducing vehicular traffic, the major source of particulate pollution, in order to sustain this maintenance status. To continue meeting both of these goals, it is imperative that Aspen provide a safe pedestrian and bicycle environment for its residents and visitors. Implementing a variety of safety improvements will encourage continued pedestrian and bicycle activity which reduces traffic congestion, decreases air pollution and preserves a small town's vibrancy. CITY MANAGER COMMENTS: