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Home My WebLink AboutMaster Permit.809 S Aspen St.0005-2021-BRES (23) APPROVED CK 1/17/2021 Construction Management Plan Shadow Mountain Condominiums Unit 16 2.1 • We will be performing interior remodel. New finishes and fixtures. One new kitchen window 2.2 • Map is attached 2.3 • Interior remodel of unit 16 in existing multi-family condominium. An exterior remodel is taking place and we will coordinate with Keelty Construction during this process 3.0 • Applying for Building permit. Hoping for issuance March 2021 3.2 • We will notify all neighbors within 300 feet of property. Mailing per city list & Posting notices on all doors. • Updates to include description of current phase of construction and work to be completed in the next few weeks. Will included any noise or loud work. • Will have site superintendent's number posted on Job Sign to help with communication & prevent any problems. 3.3 • Project sign will be posted as required. It will be 18 x 24 in size and will be readable from the street or driveway. 3.4 RECEIVED O1/12/2021 ASPEN BUILDING DEPARTMENT • Owner— Timber Ridge Condominium Association • Contractor— S&S Construction (Scott) 970-618-7318 • Scott is Site Supervisor, Safety and traffic officer 4.2 • Dates of construction Spring 2021 — Fall 2021 • Hours of construction to comply with COA regulations which is M-F 7:30am -5:30pm and Sat 9am-5pm • Non-Working Days o New Years Day o Memorial Day Weekend o Food &Wine Weekend (in the Central Resort Area) o July 4th (Including the Holiday Weekend if it falls on Monday or Friday) o Labor Day Weekend o Thanksgiving Day o Christmas Day • Construction Schedule attached 4.3 • Work to start in spring 2021 and continue until completed. Construction schedule attached 4.5 • Exterior remodel taking place by Keelty Construction. We will coordinate with them. Any additional sound mitigation will be implemented as necessary 5.1 • No Work in the ROW 5.2 • Emergency access is always maintained 5.3 • Construction workers will be requested to carpool. If we park on street carpool permits will be displayed. • Any need for parking spaces would go through the parking department 5.4 • Materials will be delivered and unloaded and stored inside the unit 5.5 RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT • No ROW Encroachment at this time. We anticipate material deliveries which will be staged within our unit. 5.6 • Dumpster & Temp Toilet will located as shown on attached plan • No Temp office 5.7 • We will have a separate plastic/aluminum and glass container • NO electronics or hazardous waste will be placed in dumpster • Food Waste will be in separate container stored inside. 6.1 • Will comply 6.2 • Will comply with all heavy haul routes. 6.3 • Deliveries will be either at unit or bottom parking lot. We will bring materials to the unit. 6.4 • Shouldn't need traffic control 7.0 • We should not impact pedestrian travel. 8.1 • We anticipate 0 sq/ft of soil disturbance thus do not anticipate the need for a Storm Water Management Plan. 8.2 • This project is not located within the Smuggler Mountain Superfund Zone 9.0 • No dirt work RECEIVED O1/12/2021 ASPEN BUILDING DEPARTMENT 10.0 • Agreed 11.0 • All Construction Equipment will be adequately muffled and maintained to minimize project noise • No radios on site prior to 8am • If necessary and reasonable we can add sound blankets RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT Appendix A — Project Sign PROJECT NAME PROJECT ADDRESS PERMIT NUMBER G.C. NAME & CONTACT NUMBER(S) EMERGENCY NAME & CONTACT NUMBER(S) 24" Project Description Project Partner Project Partner Project Partner Listing Agent/Agency Website/Contact 18" (ECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT 440 am o; tEff iaiwar il 1,4041,1, girl" itt'iiiit ••• - z-,,--,.,- i 74110/ 13if r1 II Ilk , ` ,iair . .4,,,' .-, **At *Iasi lie imr r "_a IV i, fi ,t iii ‘4(17 /1... s Ad„,8 I ir, f, litir , I, ftriir 4iNift%itt lir _....., II /,,....alr.4,' '1,1.I;An&=., , ._ ,,,.- 1110 .40, w iiiiiii .---..:- t itar—w- , ii..//tii roi T ii;hr..hy—i:..41,- -1,,. • .1001Pr Ahi. ; , . illit.411 ILIV:**: .,_, _ ilmir limi ira,rm at,a fat- is it i ar-,, 44,topi:Al al! .1*V . / arr � a� les�',� irEI kAi'l4 k #0l,1_,i,:,l_t.a1i ic.1t:rs1o11,ia_,iliilv,ikr- .,ILN,,.o..:, l4i7ir/tc, 4.6 aafliliPa/ri1r `{ : . !s/+.., is :+ 'ii 4l,#A'1,11--1--,1,,1.r,.,1... /' i - ,1_-i.,/l J:i"-a' cp7i, i Yam- ..... ,,il s,t: . ,r 4ii/ttlOi17 !i,/-.t_0_-_.n_ALAl-EI i. = • ` W -,..,1,, gr--- -------'---,-„, INAS irlaVi it* 411.1:iit7i , -' -714141111::1- /N., ' _41111 ra, ;ram = 1.,� i W lk.ill*. It how1 , /if 414 4 I,I .I-" '' i w ' ' = 0 ALI! iii li irl -:irt '" - 4i* -.. ,- .... -:,,....i. ,ftricri.oir 41111r, ili./...ir'llir-:' iik'raii. \71r. ! ir 11/1: it.tar ,-/.. .1-. itit . . 44,k7. _.,............ Air /at -.iv i . 44 la, air , 6,, , __:„.„......- . `` eD imeks,./. 4141,1, arm mat/ -!-A•F s iir, „, , ` ,'+ ► f ``" Wit,+ it a i �' .. a oir e,..- , iiiik z jit4liiislift.4, ,it:-„---,..,47/A. izl:..,:d-__Ii,ii.: 4, 41rikib., '.11116, - stir Liti, Iii.,, , ,,, air , .• ••• /i„....*,-, ." 1kt rin re .n0 , la*/ iii/W14.1,iliiiiiiiirtzfroitz 411__._,_,*/ ' 44" /' ' / M 11 -- < . o F ''' = >it .-". *1 iti -1414r*:::#0 Ale Apt -- . ir, Ror illir '-' ' iltW 4 41/ y� ,Y. 3 r. A N ..... A_ _ i I, 11 li t if 1St '4'11 r, lihr .,,,_...„-ii.,, , Awiliiiiii.„ ,..,;.t-oat: ._-„__ --. -1-_ft . Al I ilaiii ill :67......;.,..-4., -.77 ,,,,Aii,,,,:,7..r",, so, _ , E s' ' I -1 0* Jaw Avi.- ii(r.- ., ::1*.iir- ,'.<:'' '-_- - 1 if/tit kiir' •+� s '� � ,.: r�-: 4/, � �l/ / •.;��'�,�"► ,��1 rim stet ttet:- 1` ' r�r ' ', S of .�, 11 :: D -1441 0' JIII ! ... .,A,---,-- -.lageik BUILDING DEPARTMENT Appendix C - Noise Suppression Plan, Techniques and Equipment Noise Blocking Methods Contractors shall require all subcontractors and vendors to use: • "Residential"grade combustion engine exhaust silencers • Electrical vs.pneumatic hand power tools • Hydraulic vs. air powered rock drills • "Silenced"pile drivers vs. Diesel pile drivers Temporary Noise Barrier Materials: Temporary barriers shall be constructed of 3/4-inch Medium Density Overlay(MDO)plywood sheeting, or other material of equivalent utility and appearance having a surface weight of 2 pounds per square foot or greater. The temporary barriers shall be lined on one side with glass fiber, mineral wool, or other similar noise curtain type noise-absorbing material at least 2-inches. The materials used for temporary barriers shall be sufficient to last through the duration of the construction project and shall be maintained in good repair. Prefabricated acoustic barriers are available from various vendors.An equivalent barrier design can be submitted in lieu of the plywood barrier described above. Noise Control: • Replace worn, loose, or unbalanced machine parts that cause vibration. • Keep machine parts well lubricated to reduce friction. • Acoustical enclosures and barriers around generators • Sound absorbing material and vibration isolation systems on hand tools • Shields, shrouds, or intake and exhaust mufflers. • Noise-deadening material to line hoppers,conveyor transfer points, storage bins,or chutes. • Noise barriers using materials consistent with the Temporary Noise Barrier Materials Section. • Noise curtains • Plywood with concrete blankets at the height of the equipment and that it surrounds the activity such that it directs noise up more than out from the property. • Portable three-sided enclosures made from plywood to move with the activity such as jack hammering. • Internal combustion engines are to be fitted with a suitable muffler in good repair. • Noisy equipment such as cement mixers should be placed on the site to maximize the distance from neighboring houses and/or rotate location so as to not impact just one neighbor.Noise levels drop quickly with distance from the source. �� • All equipment should be properly maintained,with special attention to mufflers aR CP 01/12/2021 ASPEN BUILDING DEPARTMENT other noise control devices. Revised 11/17/09 • Between work periods,builders are required by city ordinance to shut down machines such as backhoes,bobcats, loaders and generators. • All vehicular movements to and from the site must only be made during the scheduled noiival working hours. This includes off-site noise that is associated with a specific project such as staging of concrete trucks. Equipment/ Noise Controls Activity Pile Driver Enclosure,muffler j Stone Saw Cutting Noise�control pad with water .4-4414 Handheld Impact Reduction of reflected sound Drills Circular Saw Blades 15°tooth angle,new tooth configuration, slotted saw blades, viscoelastic damping Pneumatic Tools Muffler => Pavement Breaker/ 101Vluffler, enclosure of cylinder case and front head,moil damping Rock Drill Portable Air 1I1V uffler, acoustic enclosures Compressor 1� Bulldozer Bulldozer Cab-liner material,enclosure, sound absorption in canopy, sealing of all openings Wheeled Loader Absorption of sound cooling air route Vibratory Roller 11Flexible mounting for pump compai lment Joint Cutter Anti-vibration mounting fixtures Dropping from When dropping materials from a height—for example, into or out of a Height truck,or when loading or unloading scaffolding, noise suppression plans (Re-Roofing) require a chute or side baffles. 1 Generators Acoustical enclosures and barriers surrounding equipment Generators25 KVA. The local power grid shall be used wherever feasible to limit generator noise.No generators larger than 25 KVA shall be used and,where a generator is necessary,it shall have maximum noise muffling capability. Hand Tools Sound absorbing material and vibration isolation systems on hand tools Dismantling use rubber mallets to erect and dismantle formwork Formwork RECEIVED 01/12/2021 BUILDING DEPARTMENT Backup Alarms All equipment with backup alarms operated by the Contractor,vendors, I suppliers, and subcontractors on the construction site shall be equipped [ with either audible self-adjusting ambient-sensitive backup alarms or anually-adjustable alarms. The ambient-sensitive alarms shall e automatically adjust to a maximum of 5 dBA over the surrounding background noise levels. The manually-adjustable alarms shall be set at he lowest setting required to be audible above the surrounding noise. tallation and use of the alarms shall be consistent with the performance quirements of the current revisions of Society of Automotive Engineering(SAE) J994, J1446, and OSHA regulations. ils e . Compressors ''The unit with the lowest noise rating which meets the requirements of the 'ob should be used where work is conducted in the City of Aspen, ' tailed with mufflers and/or enclosed in a noise barrier. Jackhammer 1 jackhammers and pavement breakers used on the construction site shall have exhaust systems and mufflers that have been recommended by he manufacturer as having the lowest associated noise and shall be enclosed with shields or acoustical barrier enclosures. Concrete Crushers or re-augur pile holes to reduce the duration of impact or vibratory pile Pavement Saws driving and tie to local power grid to reduce the use of generators and shall be enclosed with shields or acoustical barrier enclosures. , Pneumatic Hand `{ 11 pneumatic tools operated in the City of Aspen must be fitted with an Power Tools effective silencer on their air exhaust port. I Revised 11/17/09 RECEIVED O1/12/2021 ASPEN BUILDING DEPARTMENT TABLE 1 NOISE CONSTRUCTION EQUIPMENT REQUIRING NOISE SUPPRESSION PLANS Equipment Category Auger Drill Rig Backhoe Chain Saw Clam Shovel Compressor(air) Concrete Mixer Concrete Pump Concrete Saw Crane (mobile or stationary) Dozer Drill Rig Excavator Front End Loader Generator(more than 25 KVA) Gradall Grader Horizontal Hydraulic Boring Jack Impact Pile Driver(diesel or drop) Impact Wrench Jackhammer* Mounted Impact Hammer(hoe ram) Paver Pneumatic Tools Rock Drill Scraper Scarifier Slurry Machine Vibratory Pile Driver RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT . . . .. ... .,,,, rif , , le F1 ,,,..jediaitl., . ,,, i SO 4 40 t V - - - t . ' /(7,ID! ,.,,!..,,,- . - _ ,-- - - - - - , i 40_4,,,,.. . ilt _ _ .4, -'4.4. is . if* '' .. 24.4......,mot max. 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' '' ' [ IQ'''. 7: 1-1 PV i GA 0 y < ...E-1 (a 11 n iv,,,4,1,/-...2,.‘-..,-:-. rt ,.„. -...;r..r—-4 4,‘,i 1410"o44ft0„1-&"4---,..,,,k..1.- _i,L_)--,-"/. F }t 1,/2i,2_ :,%,4-... 4-4..-t.,_rA-,A_,,,.,,rt-..,..-..,1-s.-,-,-6-.r-_..:_'-_-Es:t I--_,-..-_.-.'Fi_-ifi;---::,-.:_-.i.-.?,,I,l.__1.z-_v'i,-.-N„1pot4.4.7.rf..0:._r.1'.i,'.,,7i"''%i,,...o.-1" .)„,/,'--,_Ai....i.z_I.../*1 t I'-v/---t--f:,i-7,.....,'0.-.—"I>-,"/.,t-ct,,r'*. 1 ,, ' n d : '\ ,,. Wa �. � - Ze;g rra am, .• IP ws 1 ' fhbt _ ,-..:- -ift:-4-#.;:, a ll .-- "..--i..._' ---- a) ,ti :gt-r7i ,--, - t - � . r 7� �"�. Art l,4,++► - % • -AC' /el , a b k 401!*7 '‘' , C q'lltE D ` I ' '4 work ,1,, c ASPEN BUILDING DEPARTMENT Appendix F - Encroachment Zone Map s. / / ' . \,__ M Encroachment Zone Map\ , I4/4 ::: r:::::i 4 ......_ , ,,,_ ,---7 , 44,0 nes Tr s J YELLO -ill/,'-,. LMain Street -71 1 _..,_,___ i _.....„ „.„ 11:: f# 1 41 eilt..,../ , / .. MORkfitt Ave (/ _ f t #' ?� ,-,fit® fleir,:tw t.,,,,, , Wol 4::,„,„, , ,17,!i!', lit- `-id 'X~~ li.,40.--r."• }tii�, e yrxsxaAp"eiy 14; ;Iv ... -17,...,1 hi i e r�.f...siktis '''' , 7 liwki �� 'ova'/4. ir`. ;; Nis i Esiiiiiii , '....;.,-;,... ,,' litile,iilf ,, a. i atp _ 11 - - ''_ rr+## --'-. 1' 111 or ,Mi}15trsat # 4M�gill 1e r: /p #♦1 t . . initit: ''''''-44 le, tit Durant Ave °* 'L.,,,,,,,,,,,,,j . a47 s''" _ { 1 ..,°�.',.. _ i y�`""e'`*..yeaf''''.'''''.*'"''''7r"--"—''"''.'''"Ti' it Monarch Street . / �"'Psdestrtan #'!6{xoto �,.� � k 1ir ;,, 0141.4714 ' `tb4 re#sr 1 ree L 1 fi h Galena Stress- #� a.*C�gfr## 4 iv. far 4-+" Y --�.-7r .:€' r1 t1r Y.asr -11r t 04,1„; �"+ } Hunter Street- sirop. s-4_j ByF br SAO 40 _ A1klir 1 [�1 +. , 4-740.-.A......"4" MAtir '''''`'4 ct '4, 111 111k.,* 1 ita-.4 4,7 i * \ ise, Arai lk i ---0: :, , ,,,,, .,.„40 \\.. it itit lip . # Rt say ,,----- Ill' */ --- ,„ 1 if to 01/12/2021 ASPEN BUILDING DEPARTMENT Appendix G - Stormwater Pollution Plan Requirements Stormwater Management During Construction The purpose of this chapter is to provide requirements and guidance for selecting and implementing Best Management Practices (BMPs) that will eliminate or reduce the discharge of pollutants from construction and other land-disturbing activities to local waters. The City of Aspen Engineering Department is the administrative authority for stormwater management and erosion prevention and sediment control on construction sites within the City's jurisdiction. By policy, Aspen's requirements for stormwater management during construction are consistent with those of the Colorado Department of Public Health and Environment's (CDPHE) Construction General Permit. The CDPHE Construction General Permit requires a stormwater management plan (SWMP) for development disturbing greater than one acre of land. However, Aspen requires a Construction SWMP detailing pollution prevention and erosion prevention and sediment control measures to be installed for projects that exceed 1000 square feet of soil disturbance, not just those that disturb greater than one acre. Wherever the City of Aspen and the CDHPE Construction General Permit requirements are in conflict, the more restrictive requirements should be applied. The regulations and guidelines stated in this chapter incorporate information from a variety of sources including: • The United States Environmental Protection Agency(EPA), • State of Colorado/Colorado Department of Public Health and the Environment(CDPHE), • Urban Drainage and Flood Control District (UDFCD),and • Northwest Colorado Council of Governments(NWCCOG). It is important to understand that these regulations are subject to change and/or alterations. For the most up to date copy please contact the City of Aspen Engineering Department. 1 .1 PURPOSE Some construction activities and materials have the potential to pollute our streams, rivers, and lakes if transported during storms or snowmelt. When construction disturbs land, the soil is more easily eroded during rainfall, snowmelt, and wind events. Eroded soil, referred to as sediment, is the greatest pollutant to rivers in Colorado and Aspen. Sediment endangers water resources by reducing water quality and causing the siltation of aquatic habitat for fish and other desirable species. Other pollutants, such as petroleum products, metals, and nutrients, easily attach to soil making sediment even more toxic. Eroded soil also necessitates the cleaning and/or repair of sewers and ditches and the dredging of water bodies. Therefore clearing, grading, and vehicle tracking during construction creates the need for erosion prevention and sediment control on construction sites. Pollutants other than sediment, such as concrete, solvents, oil, grease and metals, also cause degradation of water quality in receiving streams, and therefore must also be prevented or reduced through construction site stormwater management practices. The City of Aspen requires compliance with the criteria in this chapter in order to RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT eliminate or reduce the discharge of pollutants in stormwater runoff and prohibits the discharge of pollutants from construction sites to the City's stormwater system. These criteria should be followed from start of earth disturbance until final landscaping and stormwater quality measures are effectively in place and accepted by the City. The goal of these requirements is to decrease the amount of pollutants entering the stormwater system from construction and other land disturbing activities. The following erosion prevention, sediment control, and pollution prevention measures are designed to safeguard persons, protect property, minimize water quality and other environmental impacts, and promote the public welfare by guiding, regulating, and assisting the design, construction, use, and maintenance of any development or activity which disturbs or breaks the topsoil or results in the movement of earth on land greater than 1000 square feet in the City of Aspen,Colorado. 1 .11 General Requirements A Construction Stormwater Management Plan (Construction SWMP) must be developed before a project begins that identifies pollution prevention measures and erosion prevention and sediment control (EPSC) measures that are appropriate for the actual site conditions and construction plans for each site—generic plans will not be approved. The Construction SWMP shall contain a narrative report as well as site plan maps for each phase of the project. The appropriate schedule of implementation shall be identified as well as detailed plans shown on plan sheets with appropriate contours for each phase of the project that will minimize pollution, erosion, and sediment transport. The Construction SWMP shall be submitted to the City of Aspen as part of the Construction Mitigation Plan (CMP) and along with the grading and drainage plans in order to obtain a building or landscape and grading permit. Plans for grading and erosion control should be considered in the early stages of site planning and drainage design. The Construction SWMP may have to be modified at the time a final site development plan is prepared to better address the site conditions as the plan changes. This modified plan, the final Construction SWMP, must be approved by the City of Aspen before ground-breaking activities can occur. EPSC measures must be designed according to size, slope, and soil type of disturbed drainage areas to prevent erosion and to capture sediment. Potential sources of pollution that might affect quality of stormwater discharges from the site, and practices that will be implemented to prevent that pollution, must be identified and described as part of the Construction SWMP. In addition, sites discharging directly to waters of the state or the City's stormwater system might be required to meet stricter requirements as determined by the City Engineer or City Stormwater Manager. Implementation of the Construction SWMP (i.e., installation of measures) begins when construction begins, before the initial clearing, grubbing, and grading operations, since these activities can usually increase erosion potential on the site. Implementation and maintenance of pollution prevention measures and EPSC measures are the responsibility of the permit holder and the project/property owner. Because site conditions will affect the suitability and effectiveness of pollution prevention and EPSC measures, the SWMP is a dynamic document that should be referred to frequently, amended and updated as necessary, and kept on site available for review by City of Aspen staff upon request. The City reserves the right to require the permit holder and/or property owner to develop and implement additional measures to prevent and control pollution as needed. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT Pollution Prevention Pollution prevention for construction within the City of Aspen requires compliance with the following criteria: 1. Develop Construction SWMP - The Construction SWMP must identify potential sources of pollution that may reasonably be expected to affect the quality of stormwater discharging from the site. 2. Practice Good Housekeeping - The Construction SWMP must describe standard operating procedures and practices that will be implemented to prevent the release of pollutants to the stormwater system from construction activities. a. Perform activities in a manner to keep potential pollutants from coming its contact with stormwater. b. Prevent spills and leaks(i.e. hydraulic fluid from leaky vehicles or equipment) c. Use phasing principals to limit areas of disturbance. 3. Contain Materials and Waste —Areas used for staging of construction activities and the storage of soil, chemicals, petroleum-based products and waste materials, including solid and liquid waste, shall be designed to prevent discharge of pollutants in the runoff from the construction site. a. Store construction, building, and waste materials in designated areas, protected from rainfall and contact with stormwater run-on and runoff. b. Dispose of all construction waste in designated areas (e.g. concrete may only be disposed of in a designated concrete wash-out area) and keep stormwater from flowing onto or off of these areas. c. Properly clean and dispose of spilled materials. 4. Dewatering — If it is determined that site dewatering will be required, the permit holder/ and or property owner must obtain a Construction Dewatering Permit for the CDPHE division of water resources. Erosion Prevention and Sediment Control Erosion prevention and sediment control for construction within the City of Aspen requires compliance with the following criteria: 1. Develop Construction SWMP —The Construction SWMP plan must demonstrate how stormwater, erosion, and sediment will be handled throughoutconstruction. 2. Control Site Perimeter—Construction activities and their impacts must be controlled within the limits of the site. a. Delineate the site perimeter on the plans and in the field to prevent disturbing areas outside of the project limits. b. Divert upstream run-on safely around or through the construction project. Diversions must not cause downstream property damage and cannot be diverted into another watershed. c. Construction vehicles and equipment may enter and exit the site at only one designated access point. This exit must be stabilized with gravel or other appropriate material throughout the duration of the project. 3. Minimize Disturbed Areas — Construction activities must be scheduled in correct sequences to minimize the total amount of exposed soil at any given time. a. Only clear land which will be actively under construction in the near term (e.g. within the next 1-2 months). b. Minimize new land disturbance during the spring runoff/snow melt season_ RECEIVED O1/12/2021 ASPEN BUILDING DEPARTMENT c. Avoid clearing or disturbing sensitive areas, such as steep slopes and natural waterways, where site improvements will not be constructed or are not necessary. 4. Stabilize Disturbed Areas — Disturbed areas must be permanently or temporarily stabilized as soon as possible, but no later than 14 days after last worked, whenever active construction is not occurring on that portion of the site. Disturbed areas must be stabilized by November 15th of each year to minimize erosion and sediment transport that occurs during spring snow melt. 5. Protect Slopes and Channels — Concentrated stormwater flows shall be avoided, or the conveyance system shall be protected sufficiently to prevent significanterosion. a. Safely convey runoff from the top of the slope and stabilize disturbed slopes as quickly as possible. b. Avoid disturbing natural channels. c. Ensure the runoff velocity caused by project does not erode channel bottoms. 6. Install and Maintain EPSC Measures —All sites must minimize pollution potential by installing and maintaining erosion prevention and sediment control measures throughout the duration of any project. a. Erosion prevention measures are those BMPs used to limit erosion of soil from disturbed areas on the site. Erosion prevention measures are required for all disturbed areas. Examples include: Contour Tracking, Rolled Erosion Control Products, Hydro Mulching and similar activities. b. Sediment control measures are those BMPs the limit the transport of sediment off-site or downstream of disturbed areas. Sediment control measures are required for all disturbed areas. The most commonly used sediment containment is silt fencing. c. Use non-structural and structural best management practices (BMPs)described in this chapter. d. All sites must be inspected regularly by a representative from the project to document the condition and effectiveness of BMPs. 7. Retain Sediment - Sediment control measures are required at all points where stormwater leaves the site as concentrated flow and at any other points where sediment has the potential to leave the site. Sediment-laden runoff will be considered a violation of City of Aspen code and can receive fines up to$1000 per day that the site is in violation. Best Management Practices Best Management Practices (BMPs) are activities or controls that are implemented to reduce the potential of discharging pollutants to the stormwater system and include pollution prevention measures and EPSC measures. 2.1 Permit and Construction Process Step 1 — Develop Construction SWMP The owner or the contractor should secure the services of a professional engineer knowledgeable in construction management practices and the City of Aspen requirements for stormwater management during construction to develop the Construction SWMP. The SWMP must be submitted as a portion of the CMP along with the building permit application. The Construction SWMP will be reviewed by the City and its comments will need to be addressed before a building permit will be issued. RECEIV D 01/12/20 1 a BUILDING DEPARTMENT Projects that disturb greater than one acre of land will also need to apply for a Construction General Permit with the CDPHE. This application also requires the submittal of a SWMP. The Construction SWMP developed for the purposes of construction within the City of Aspen should be adequate to submit with the Construction General Permit Application. The Construction SWMP shall consist of a written narrative report and a site plan map describing the erosion prevention and sediment control measures to be implemented at the site. Narrative Report The narrative report must contain, or refer to, the drainage report for the site and should contain, at the minimum, the following: 1. Contact Information—The names, addresses, email addresses and phone numbers of the project/property owner, the applicant or permit holder, the professional engineer preparing the Construction SWMP, and the site person that will be responsible for implementation of the Construction SWMP. 2. Project Description -A brief description of the nature and purpose of the land disturbing activity, the total area of the site, the area of disturbance involved, and project location including township, range, section, and quarter-section, or the latitude and longitude, of the approximate center of the project. 3. Existing Site Conditions -A description of the existing topography, vegetation, and drainage; and a description of any water bodies or conveyances on the site. 4. Downstream/Receiving Waters- Identification of the stormwater system downstream of the site including the receiving water body (e.g. Roaring Fork River). 5. Adjacent Areas-A description of neighboring areas including streams, lakes, residential areas, roads, etc., which might be affected by the land disturbance. 6. Soils-A brief description of the soils on the site including information on soil type and character. 7. Historic Conditions—Areas of historic contamination (natural, mining, industrial or agricultural) should be described. 8. Areas and Volumes-An estimate of the quantity (in cubic yards) of excavation and fill involved, and the surface area (in square feet and acres) of the proposed disturbance. 9. Pollution Prevention Measures—A description of the potential sources of pollution from construction activities and materials and the methods described in this chapter which will be used to prevent pollution to the stormwater system. Descriptions 10. Timing of Construction Activity — A schedule indicating the anticipated starting and completion time periods of the site grading and/or construction sequence, including the installation and removal time periods of erosion and sediment control measures, and the time of exposure of each area prior to the installation of temporary EPSC measures. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT 11. EPSC Measures-A description of the methods described in this chapter which will be used to prevent erosion and control sediment on the site. Descriptions must be site specific. Generic or general statements are not acceptable. 12. Permanent Stabilization - A brief description, including specifications and the landscaping plan, of how the site will be stabilized after construction is completed. 13. Stormwater Management Considerations —A description of how stormwater runoff from and through the site will be handled during construction. Provide a brief description of the post-construction stormwater quality control measures to be included as a part of the site development. 14. Inspection and Maintenance -A description of how each EPSC and pollution prevention measure will be maintained and a statement that the site will be inspected at least once every 14 calendar days and 24 hours before/after forecasted storm events to determine SWMP accuracy and effectiveness; proper installation, location, and condition of EPSC measures; and implementation of construction activity pollution prevention measures. An alternative of inspecting every 7 calendar days regardless of precipitation events or forecasts may also be used. Inspection and maintenance reports should be completed and kept on site following each inspection and made available to City of Aspen staff upon request. Any loss of sediment from the site should be noted and kept in file with these reports, including date and estimated amount of sediment loss and what activities were performed to ensure that sediment loss would not occur again. 15. Calculations-Any calculations made for the design of such items as sediment basins, diversions, or waterways; and calculations for runoff and stormwater detention basin design (if applicable). 16. Other information or data as may be reasonably required by the City ofAspen. 17. The following note - "This Construction Stormwater Management Plan has been placed in the City of Aspen file for this project and appears to fulfill the City of Aspen criteria for the management of construction activities and associated erosion and sedimentation controls. I understand that additional control measures may be needed if unforeseen pollutant transport problems are determined by City of Aspen to occur during this project or if the submitted plan does not function as intended. The requirements of this plan shall run with the land and be the obligation of the owner until such time as the project covered by this plan is properly completed, modified or voided." 18. Signature page for owner/developer acknowledging the review and acceptance of responsibility, a statement by the Professional Engineer acknowledging responsibility for the preparation of the SWMP, and a signature of the site representative that will be responsible for implementation of the SWMP in the field acknowledging that they have reviewed and agree to implement and maintain the proposed measures as designed or altered as necessary while meeting the intent of the design. Site Plan A plan sheet(s) size 24"x36"that shows the location of erosion prevention and sediment control measures with appropriate contours for each phase of the project must be submitted in addition to the narrative report. The site plan(s) must show: 1. A general location map at a scale of 1-inch to 1,000-feet to 1-inch to 8,000-feet indicating the general vicinity of the site location. 2. The property lines for the site on which the work will be performed. 3. The construction SWMP at a scale of 1-inch to 20-feet up to 1-inch to 200-feet with separate sheets for each phase of site development construction. 4. Existing topography at one- or two-foot contour intervals. The map should extend a minimum of 100-feet beyond the property line or beyond the project's soil disturbance limits, whichever is larger. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT 5. Proposed topography at one- or two-foot contour intervals. The map should show elevations, dimensions, location, extent and the slope of all proposed grading, including building site and driveway grades. 6. Delineation of the entire area draining to the site, drainage areas within the site, and discharge points from each drainage area. 7. Location of all existing structures and hydrologic features on the site. 8. Location of all structures and natural features on the land adjacent to the site and within a minimum of 100 feet of the site boundary line. 9. Delineation of trees and natural feature conservation areas such as steep slopes or natural channels. 10. Location of the storm sewer, street gutter, channel or other waters receiving storm runoff from the site. 11. Location of all proposed structures including drainage features, paved areas, retaining walls, cribbing, plantings and development for thesite. 12. Limits of clearing and grading. 13. Location of construction entrance/exit. 14. Location of soil stockpiles-Areas designated for topsoil and subsoil storage. 15. Location of storage equipment maintenance and temporary disposal areas - Areas designated for equipment, fuel, lubricants, chemicals and all temporary construction waste storage. All these areas shall be cleaned out and reclaimed at end of project and waste disposed at legal disposal sites. 16. Location of designated concrete washout and a statement that concrete washout must occur within this location or hauled back to the batch plant. 17. Location of temporary roads designated for use during the construction period. 18. Location of temporary and permanent soil erosion control measures and sediment control measures. Depict all EPSC measures using the standard map symbols given in Figure C1-1. If the project will experience several phases of construction, a plan sheet must be submitted for each phase with the appropriate contours and EPSC measures depicted on the plan for that phase. 19. Detail drawings and specifications- Design drawings and specifications for erosion and sediment controls, temporary diversions and all other practices used for each phase of site development. 20. Other information or data as may be reasonably required by theCity. 21. The following note: "This Construction Stormwater Management Plan has been placed in the City of Aspen file for this project and appears to fulfill applicable erosion control and construction management criteria. I understand that additional measures may be required of the owner due to unforeseen erosion, sediment or other pollutant transport off the site or if the submitted plan does not function as intended. The requirements of this plan shall run with the land and be the obligation of the owner until such time as the project covered by this plan is properly completed, modified orvoided". 19. Signature block for owner/developer acknowledging the review and acceptance of responsibility, a signed and stamped statement by the Professional Engineer acknowledging responsibility for the preparation of the SWMP, and a signature of the site representative that will be responsible for implementation of the SWMP in the field. Should the field representative change, this block should be updated with a signature of the current site representative that will be responsible for implementation of the SWMP. RECEIVED O1/12/2021 ASPEN BUILDING DEPARTMENT Step 2 -Approval of Construction SWMP The Construction SWMP must be approved prior to issuance of a Building Permit by the City. The final SWMP must be consistent with a Drainage Report accepted by the City of Aspen Engineering Department. However, approval of the SWMP does not imply acceptance or approval of Drainage Plans, Utility Plans, Street or Road Plans, Design of Retaining Walls or any other aspect of site development. 2.2.1 Exemptions and Variances These are generally processed according to the applicable municipal regulations and reviewed on a case-by-case basis. 1. Exemptions from the erosion control planning process may be considered for any of the following by the local jurisdiction if their MS4 permit so allows; however, exempting the owner from the preparation and submittal of a SWMP and/or from applying for a grading permit does not exempt the owner from controlling erosion and sediment movement off the construction site: a. Agricultural use of land. b. Grading or an excavation below finished grade for basements, footings, retaining walls, or other structures on single family lots not a part of a larger development or redevelopment project and disturbing a total land surface of less than one (1) acre in size unless required otherwise by local jurisdiction. c. A sidewalk or driveway authorized by a valid permit. d. Land-disturbing activities involving less than a total of one (1) acre of disturbed area. Individual lots involving less than one (1) acre of disturbed area in a larger land use change project shall not be considered separate development projects, but rather as a part of the subdivision development as a whole and are not eligible for an exemption. It will be the responsibility of the homeowner or homebuilder to conform to all requirements of the locally- approved SWMP for the development or redevelopment. As part of any Building Permit within a larger development for which an individual erosion control plan is not required, it is recommended the following statement be included: "We have reviewed the Construction Storm Water Management Plan for (subdivision name) and agree to conform to all requirements contained therein and all erosion control requirements of the (insert name of municipality) and the State of Colorado. We further agree to construct and maintain all erosion and sediment control measures required on the individual lot(s) subject to this Building Permit and/or in accordance with the provisions of the Construction Best Management Practices chapter of the Manual published by the Urban Drainage and Flood Control District" e. Underground utility construction including the installation, maintenance and repair of all utilities under hard-surfaced roads, streets or sidewalks provided such land-disturbing activity is confined to the area which is hard-surfaced and if runoff and erosion from soil stockpiles are confined and will not enter the drainage system. f. Gravel, sand, dirt or topsoil removal as authorized pursuant to approval of the Colorado Mined Land Reclamation Board, provided said approval includes a construction activities management, erosion and sediment control plan that meets the minimumsspecified. g. Projects having a period of exposure (from time of land disturbance until permanent erosion control measures are installed) of less than 14 days. h. Where the owner certifies in writing to the City of Aspen and the City of Aspen agrees in writing that the planned work and the final structures or topographical changes will not result in, or contribute to, soil erosion or sediment discharges to any waterway or irrigation ditch and will not interfere with any existing drainage course or waterway in such a manner as to cause damage to any adjacent property, or result in the deposition of debris or sediment on any public right-of-way, will not present any hazard to any persons or property, and will have no detrimental influence upon the public welfare, or upon other properties in thewatershed. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT 2. Variances — The City of Aspen may consider waiving or modifying any of the criteria which are deemed inappropriate or too restrictive for site conditions by granting a variance, provided such variance does not violate the laws of the State of Colorado or the Federal government. Variances may be granted at the time of plan submission or request for plan revision.Variances must be requested in accordance with the subdivision regulations and mustdefine: a. The criteria from which the applicant seeks a variance. b. The justification for not complying with the criteria. c. Alternate criteria or standard measures to be used in lieu of these criteria. The criteria and practices specified within this section of the Manual relate to the application of specific erosion and sediment control practices. Other practices or modifications to specified practices may be used if approved by the municipality prior to installation. Such practices must be thoroughly described and detailed to the satisfaction of the local municipality reviewing and approving the erosion control plan. To expedite the review and decisions on variance requests, it is suggested that a variance request be included with, or submitted prior to, the initial SWMP submittal. Step 3 — Project Construction — Installation, Maintenance, and Inspections During the construction phase, the following sequence is recommended for the implementation of the project and the SWMP: 1. During preparation of the Construction SWMP, the contractor designated a manager for the implementation of the SWMP. This person will be responsible for implementing all permit conditions and will communicate with City inspectors and inspectors from other agencies. 2. Install all BMPs shown on the SWMP that need to be installed in advance of proceeding with construction, such as construction fencing and limits of disturbance, tree and other natural area protections, construction exits, silt fences, inlet protection,etc. 3. Identify construction equipment and materials storage and maintenance areas and install BMPs to prevent pollutant migration from them. 4. Notify the City that the site is ready for initial inspection. 5. Install any additional BMPs that are called for in the SWMP before grading begins. a. Strip off and stockpile topsoil for reuse. Insure that soil stockpile is not located in a drainage path, downhill of a significant drainage area, is protected from erosion and dust migration, and that a sediment control measure is located downstream. b. Mulch areas that will remain undisturbed for more than two weeks during the April through September rainstorm season (e.g., stockpiles and overlot graded areas that will remain dormant for an extended period of time), or for more than a month during the October through March period. c. Insure that BMPs that need to be installed at different times during the project are installed when called for in the SWMP or by the City's inspector and are in full operation before construction activities begin in areas served bythem. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT d. Inspections by site Supervisor/Professional Engineer e. Inspections by City will occur regularly to inspect for general compliance with the approved plan. f. Maintenance by the permit holder/and or property owner is required for all BMP's regardless of the stage of construction. g. Maintenance time frame from City h. Enforcement from City will occur at any time when a permit holder / and or property owner is in violation of the SWWP. Enforcement will escalate from verbal notices of corrective actions to stop work orders based on the number of violations or the severity of any one single violation. Step 4— Project Completion —Stabilization, Re-vegetation, and CO Re-vegetate the site as called for in the SWMP. 1. After all work has been completed in an area a. including stabilization and re-vegetation, b. clean out and restore any post construction BMPs that may have been used for construction sediment controls. After all work has been completed on site, prepare the site for a CO inspection by the City and arrange for this inspection by calling (970) 920-5448. Correct all deficiencies and call for follow- up inspection. The owner or contractor needs to arrange for inspection by the local jurisdiction when the vegetation has reached acceptable level of coverage and maturity. This could take months. In the meantime, the owner or contractor need to inspect the site on a regular basis to determine if there are deficiencies or damage that need to be addressed. The owner is responsible for the performance of all erosion and sedimentation control installations until such time the site's re- vegetation is deemed acceptable and a written notice is provided to the owner by the local jurisdiction. Once re-vegetation has been accepted, request release of any surety, letters of credit or other financial guarantees the local jurisdiction may have required the permit holder provide at the time the permit is issued. A closure of the construction activities permit from the State should also be pursued at this time. RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT Appendix I - Holiday Season Dates Look for the day that December 25th lands on for the current year that you are doing construction. Years: 2017, 2023, 2028 I Monday Tuesday Wednesday Thursday Friday Saturday Sunday Dec 25 Dec 26 Dec 27 Dec 28 Jan 1 Jan 2 1 Jan 3 Alb_ 1 Years: 2018, 2029, 2035 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Years: 2019, 2024, 2030 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Dec 20 Dec 21 Dec 22 Dec 23 Dec 24 Dec 25 Dec 26 Dec 27 Dec 28 Dec 29 Dec 30 Dec 31 Jan 1 Jan 2 Years: 2025, 2031, 2036 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Dec 19 Dec 20 Dec 21 Dec 22 Dec 23 Dec 24 Dec 25 Dec 26 Dec 27 Dec 28 Dec 29 Dec 30 Dec 31 Jan 1 la Years: 2020, 2026, 2037 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Derril"P"wrDec 20 ' Dec 23 Dec 24 Dec 25 Dec 26 Dec 27 — - Dec 30 Dec 31 Jan 1 Jan 2 Years: 2021, 2027, 2032 Monday Tuesday Wednesday Thursday Friday Saturday Sunday = Dec 19 Dec 20 Dec 21 Dec 22 Dec 23 Dec 24 Dec 25 Dec 26 1 Dec 27 I Dec 28 I Dec 29 I Dec 30 I Dec 31 1 Jan 1 Years: 2016, 2022, 2033 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Dec18 11 fir Dec 19 Dec 20 Dec 21 Dec 22 Dec 23 Dec 24 Dec 25 1 Dec 26 Dec 27 Dec 28 Dec 29 Dec 30 Dec 31 Jan 1 IlimilikHoliday Restricted Hours in Core Christmas Restricted Hours in CRA 01/12/2021 ASPEN BUILDING DEPARTMENT 3 o- 0N i N N co 0 O 0 0 (aua m = Ci 0 3 -�'o -- cn i OD co N w n CD _ C�G 0 Q Q s; 0) 0 0 m N N NI a / K w 0 - K C 3 N _. x a n• a a,l r 5 O 40 n am n 0 c ,r.G a .i/ s'E 0 On r. S a 3 o O. i m m r- A E 4 m ..,� Asa ' 0 _ n m ic s HE s AO co aTi. T Z ,'- m 4SD r an '0 n a o n A- A q.O I 2 -U_ 0 0 P F o ❑ o 49 a ' iotuk- w< o 49 :,z -, "i3 aRm 3*O m O ,y%F i. {p}f in y O O �y - q x C SY ry O 1-2 m __ ffi 3E <, s;y._ _ w n m cn g \ m W ® { oq 'II a Yai m ,«m z .. Vt a) S X c m 3 4 m ,.]� x a,v Q F- �=6 p m -4 gs ¢ ? _ I t m .. S rn S D ,y � I N to wF4,s, m sO i I . -RECEIVED ,i _ - _...., � 01/12/2021 s ASPEN BUILDING DEPARTMENT y; f � or ,,4. R,+sr° 7t aro,Y" , .r. air - V - -_= Y , - ✓-e # -b" - . �t x y a 809 South Aspen St. " ' rtr `,' Shadow Mountain �• . °t - � � Condos 9 �. Te _ # 4. + ..,i,,, .,..,. 7.-- - -.- • - _-,41: ',...- ,.- —,--•..„. .1_r!',1 ."- -, _4-- ,..,.... 1y s a , ., _ . -" - k - - r.Aa -* k . ' ", ire bill - yam, �:• 4 ,"... ".. �I e i 9 F e #f • • .r a hXt j � a- ms,yg IIR - #� 1 .,;,:ri•- -. -140,11 S-ottur Aim K , , 't if 'y Y �. ,w a'� ' '. .\• G 44.", ;,•40 ---'7' a i a --ti4 i --r_ ir.Agi, , - ,,,,,„,,,,t, -., ✓ 9 r dt.l'.',: '',,,,it, _ 1 rii-, __, if ill,. . ,c-- tl . 1 . , , ... , ,.. . .. „. , .1 . 0 - - ,- . , , , ., ¢ r t f -. r 40 4 _ I \ N.': .\\401' . 0 '`. ill t/f1/.,__, _ __ --"--'7 , I" i ,, :. ,, , . . ,: .-. - '.. I 46, RECEIVED 01/12/2021 ASPEN BUILDING DEPARTMENT „ e a _ . t,, -r—i , ..\ If )1i, ' t GI-1 .1 3 k n.i • • Q 4 1° .i cV I § 8 ,, Z I ' 'it- sir �'': E-+ W W w ¢, ° F a I O W a yU Cl)Q v }CO)� 0 0 z C!} I CDV 4-1 I w "., ,',,, it '.,:, V I z ,' U 4 I W Cl) W z V 1 Ip j 4 ,) H pw , t yF 1. �, 3 0 I fYd 9;�4 COO I , �: I , I _._ - s.- r ,, I ' . -%. * ,' 140'7 , __._ ''.. * ; , it ; . ti .' .,-„,./..--._ . .. . ,,„4,,,r--i-,,N. E kti '0112/2021 ASPEN BUILDING DEPARTMENT