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Home My WebLink AboutReports - Hazardous Materials - 03/14/2025 NATIONAL INSPECTION SERVICES Commercial and Environmental Due Diligence PO Box 270774 | Fort Collins, CO 80527 | (970) 482-1976 | e-mail: info@nationalinspection.net | www.nationalinspection.net ___________________________________________________________________________________________________________________ Vapor Mitigation System (VMS) Design Memorandum 300 E. Mountain Avenue, Fort Collins, CO March 14, 2025 Ms. Julia Fraser Colorado Department of Public Health and Environment (CDPHE) Hazardous Materials and Waste Management Division 4300 Cherry Creek Drive South Denver, Colorado 80246 Dear Ms. Fraser, To fulfill the requirements of the Corrective Action Plan for the 300 E. Mountain Avenue property (Site or Property), the Colorado Department of Public Health and the Environment (CDPHE) has required that an approved vapor mitigation system (VMS) be designed and installed during the redevelopment of the new building at the 300 E Mountain Avenue property. The new building on the Site will be constructed from lot-line to lot-line and consist of a two-story commercial building with a full basement. The bottom of the basement slab will be located approximately 13.5 feet below the ground level. Based on the soil borings that were performed on the Site, the bottom of the basement is likely to be at or below the level of the groundwater at the Site (which is at a level of approximately 12 feet). As a result of the high water table and the depth of the basement slab, construction of a typical VMS is not possible on the Property; the typical system would include sub-slab gravel and slotted piping to collect the vapors, a 15 mil polyethylene liner placed beneath the slab to prevent vapor intrusion, and a riser pipe (and perhaps a blower or fan) to move the sub slab vapors to the atmosphere. The new building design includes a substantial barrier to prevent infiltration of groundwater into the basement and this barrier is also designed to prevent vapor intrusion. The barrier includes a 46 mil sub-slab liner that is bonded to the bottom of an 18-inch-thick concrete foundation slab. The outside walls of the basement are lined with a 32 mil barrier and the wall and floor barriers are bonded together to make a seamless barrier between the entire basement and subsurface soils. The architects have designed the building to prevent water and vapor seepage into the building and have NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ stated that the elevator sump (lowest point of the slab construction at about 17 feet below ground surface) is not expected to be impacted by groundwater. While planning the VMS design for the Site, National Inspection Services (NIS) has relied on the guidance of a number of sources, including the project architects, the designer of the heating, ventilation, and air conditioning system (HVAC) for the building, and the designer of the VMS that will be installed beneath the Armory building that is adjacent to the Site. NIS has also had conversations with the CDPHE and we have reviewed a U.S. Environmental Protection Agency (EPA) technology transfer document (Engineering Issue Series) that presents the latest available information on vapor mitigation. Based on these sources, the goal of the VMS design is to prevent any residual chlorinated solvents that may be present in the subsurface from entering into the new building. To accomplish this goal, there are several key elements to the design to consider as follows: • Sitewide soils data; • Remedial efforts to mitigate possible vapor intrusion; • Construction dewatering with treatment; • Basement excavation; • Placement of the impermeable liner beneath the building footprint and along the basement walls; • Influence between the new building and the adjacent Armory VMS; • Design and installation of a neutral pressure HVAC system for the new building with dedicated exhaust/return air; and • Performance monitoring program. The design of the VMS for the Site uses both of the approaches that are recommended by the USEPA in guidance for preventing vapors from entering the building. The two general approaches to eliminate the entry routes for volatile organic compounds (VOCs) in our design include sealing the basement slab with a membrane liner to prevent sub-slab vapors from entering the building and to install an HVAC system that eliminates negative pressure in the building that may draw sub-slab vapors into the building. We believe that site conditions and the remedial activities that are planned for the Site enhance the system design and result in a system that is fully protective of human health and the environment. Each of the above are discussed in the design document presented below. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Table of Contents 1.0 Introduction ................................................................................................................................................................................. 4 2.0 Supporting Background Information ............................................................................................................................ 5 2.1 Summary of Site Data .................................................................................................................................................... 5 2.2 Remedial Efforts that will Help Reduce Vapor Intrusion ......................................................................... 6 3.0 Vapor Mitigation System Design ...................................................................................................................................... 8 3.1 Geomembrane Specifications ................................................................................................................................... 8 3.2 HVAC Specifications ....................................................................................................................................................... 9 4.0 Operations, Maintenance and Monitoring .................................................................................................................. 9 5.0 Reporting ..................................................................................................................................................................................... 10 Figures: Figure 1 – Soil Sample Results Figure 2 - Armory VMS, Proposed Horizontal Well Layout Showing 15’ Radius of Influence Attachments: Attachment 1 – Wall Sections A4.3 and A4.2 Attachment 2 – Membrane Specifications Attachment 3 – HVAC Specifications NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Vapor Mitigation System Design for a New Building 300 E. Mountain Avenue, Fort Collins, CO. 1.0 Introduction The new building being planned for 300 E Mountain Avenue in Fort Collins (Site or Property) will consist of a two-story structure with a basement and will be utilized for commercial purposes. The first floor and basement levels will be integrated into the renovations of the adjacent Armory music theater while the basement area will be generally configured for storage. The first floor of the building will consist of a bar, restrooms, offices, a green room and some space building to potentially house a radio station. There are no current tenant plans for the second story of the building. The new building will have a basement floor that consists of an 18” thick mat slab foundation which will be poured at approximately 13.5’ below ground surface (bgs). The total depth to excavation is anticipated at 14-foot with a 17-foot excavation for the elevator pit area. Based on the geotechnical report (Terracon, 2024) it is anticipated that the building foundation will be within the groundwater table; groundwater was found at about 12 feet bgs during historical studies. The building is being designed to account for the groundwater elevations and includes engineering controls to prevent the infiltration of water into the basement. The engineering controls include a robust membrane that has been specified for the building; the membrane is specifically designed to reduce vapor intrusion from chemicals of concern including tetrachloroethene and trichloroethene (PCE/TCE). Full specs for the vapor barrier are discussed in Section3.1. The purpose of the VMS design is to mitigate a potential vapor intrusion condition at the subject building. Due to construction limitations and the fact that the building foundation and basement will be within the groundwater table, a typical sub slab mitigation system is not viable at this location. As such, in addition to the installation of a vapor barrier, the building has been designed with an HVAC system capable of maintaining a neutral pressure within the basement and complete an outdoor air exchange every 90 minutes. NIS also believes that several remedial and constructive activities that will occur concurrently with the construction of the building will assist in the removal of significant possible sources of VOCs from the Site and will help assure the success of the planned VMS. The following sections provide: a summary of known Site data with a discussion of the planned remedial and construction efforts at the Site; presents the VMS design, equipment and geomembrane specifications; and, outlines a post-construction operations and maintenance plan. This Design Memorandum is intended to obtain CDPHE approval of the VMS concept for the Site. The full design drawings and specifications of the VMS will be presented to CDPHE when the project construction drawings are finalized and approved by the City of Fort Collins. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ 2.0 Supporting Background Information This section of the VMS Design Memorandum includes information that is intended to describe the current Site conditions as well as describe actions that will impact those conditions and help with the overall goal of vapor mitigation. 2.1 Summary of Site Data Several efforts to characterize soil and groundwater at the Site have been completed to date and the results of those studies have been submitted to CDPHE. To better communicate the results of those studied with respect to the VMS system design the following key points are presented. • Pre-excavation soil sampling beneath the former Lyric property – the footprint of the Site is approximately 3,935 square feet, or about one tenth of an acre. In an effort to characterize the soil that would be excavated during redevelopment, NIS advanced 11 soil borings to a depth of approximately 14 feet within the building footprint and collected photoionization detector (PID) data and soil samples for laboratory analytical testing. While the number of borings seems excessive, the goal of this investigation was to predetermine which soils can be managed as non-hazardous and which soils require management as hazardous. Soil samples in each of the borings were collected generally from three depth increments, 5 feet, 10 feet, and 14 feet below ground surface (bgs). PID readings were generally low, but there was a PID reading of 175.8 ppm in the lower portion of boring BH-12; a soil sample from this location did not indicate that soils were highly impacted, and this may be a result of groundwater influence at this location. Soils were sampled and tested for VOCs, including the dry cleaning solvent tetrachloroethylene (PCE). The results of soil sampling for each of the intervals that were sampled are shown on Figure 1; the average PCE concentration for each depth interval were as follows: o 5-foot interval – average of 11 samples was less than 0.05 mg/kg PCE o 10-foot interval –average of 10 samples was less than 0.2 mg/kg o 14-foot interval – average of 11 samples was less than 0.3 mg/kg • Anticipated impact to indoor air from Site soil - The USEPA Regional Screening Level (RSL) for PCE in industrial commercial soils is 100 mg/kg; twenty times the TCLP limit for PCE would be 14 mg/kg. While the soils are classified under the Resource Conservation and Recovery Act (RCRA) as hazardous until a contained-out determination can be provided by CDPHE, the PCE concentrations throughout the area of excavation are clearly below levels that would be of regulatory concern. The highest PCE concentration found in the sampled intervals in the soil beneath the building footprint was 0.655 mg/kg. During redevelopment all of the PCE mass contained in the soils will be excavated and disposed of off-site in accordance with the approved Materials Management Plan (MMP) for the Site. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Removing the PCE mass within the soil is expected to positively impact the future indoor air quality within the new building. • Groundwater beneath the building footprint – groundwater was also assessed with the installation of three piezometers within the limits of the foundation excavation. The piezometers were drilled to a depth of 14 feet or more bgs; groundwater was generally measured within the piezometers at a depth of about 12 feet bgs. The geology at those depths was described as “Silty Sandstone: moist, yellowish orange, very fine, well-sorted sand; weathered, moderately to well indurated.” Based on NIS experience, the groundwater beneath the Site is likely contained within poorly connected fractures in the upper sandstone bedrock and perhaps in poorly connected fractures in the underlying limestone; borings that are placed deeper in the bedrock are typically dry. Groundwater samples were collected and PCE was found to be present in the groundwater beneath the building footprint at concentrations that ranged from 786 micrograms per liter (µg/l) PCE to 1560 µg/l PCE. • Anticipated impact of groundwater on indoor air quality - Based on the USEPA VISL model using the highest concentration detected, the risk to indoor air in a building on the Site without a VMS was calculated to be at a level that would not be protective of human health and the environment and would require vapor mitigation. While some reduction in groundwater PCE concentration is expected due to removal of some of the soils, the groundwater to indoor air pathway is the prime concern. • Other key data/sources – There are concentrations of PCE in groundwater and sub-slab air (Armory) that have been found to be very high within the vicinity of the building footprint. These potential sources of impact on the indoor air quality of the new building include some coal based fill that appears to be contained in a shallow area of the Site near the former Armory Building, a suspected underground tank located just south building footprint, elevated concentrations of PCE in groundwater at a groundwater well (PMW-2R) that is located just southeast of a suspected underground tank and in the vicinity of where a sanitary sewer line exits the Site, and the presence of residual PCE beneath the Armory Building. The groundwater at PMW-2R was found to contain PCE at a concentration of 221,000 µg/l. These other potential sources are all being addressed as part of an approach to integrate the environmental cleanup efforts into the redevelopment of the Property. • Anticipated impacts of other possible sources to indoor air – the additional possible sources at the Site, including the groundwater beneath the building footprint, are the subjects of planned remedial activities or other activities that will remove PCE mass from the Site. The planned activities are discussed in Section 2.2. 2.2 Remedial Efforts that will Help Reduce Vapor Intrusion Prior to and during construction of the new building, various actions and remedial efforts will be implemented to facilitate the redevelopment, and these actions are expected to reduce the potential for vapor intrusion into the new building. These actions include: NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ • Coal Based Fill Removal – prior to excavation activities, NIS will investigate and remove the impacted coal based fill. It is anticipated at this point that there is approximately 15.5 cubic yards of coal-based fill which will require special disposal. • Underground Storage Tank (UST) Assessment and Removal – A potential underground storage tank (UST) was identified in a 1917 fire insurance map during historical studies on the Site. The tank was depicted to the south of the 300 E Mountain Avenue property within the City of Fort Collins-owned sidewalk. A ground penetrating radar (GPR) survey was completed to investigate the absence or presence of this tank. This survey identified a reaction resembling a possible UST located below the sidewalk adjacent to the south of the Site in the approximate location of the tank depicted on the 1917 fire insurance map. This potential UST has also been identified as a potential point source of PCE in groundwater. Monitoring well PMW-2R was completed in a presumed down-gradient position in close proximity to this potential UST. This monitoring well (PMW-2R) detected high levels of PCE, potentially associated with a release from the UST system. Prior to the Site redevelopment work, NIS will investigate and remove the potential UST in accordance with Division of Oil and Public Safety (OPS) requirements. As part of the removal activities, NIS plans to remove soils to the soil/groundwater interface in order to initiate remediation of groundwater in the area of the UST. All soils will be removed and disposed of in accordance with the MMP or managed in an appropriate manner in accordance with RCRA guidance. NIS is currently working with the City of Fort Collins regarding the interim remedial actions that will be associated with the tank removal. • Groundwater Dewatering and Treatment (beneath the future basement slab) – During redevelopment of the 300 E Mountain Avenue property, dewatering of the building excavation will be required in order to place the sub-slab fill and the basement floor slab and elevator shaft. It is anticipated that the dewatering system will effectively remove water from the bedrock within the building envelope and will capture some groundwater that is outside of the building excavation. The water that is collected will be treated prior to discharge in accordance with a discharge permit that will be obtained from the Colorado Discharge Permit System (CDPS). It is anticipated that this system will remove a significant amount of PCE mass from the groundwater along the southern Site boundary. Groundwater on the Site is generally located at a depth of approximately 12 feet (within the bedrock). This temporary pump and treat scenario will ultimately assist with vapor mitigation through the removal of PCE mass from the area of the building. • Soils Excavation – The new building will be excavated to a depth of approximately 14 feet bgs and 17 feet bgs in the area of the elevator shaft. Bedrock was encountered throughout the Property at approximately 10 to 11 feet below ground surface and therefore three to four feet of bedrock will be excavated from the Site as part of the redevelopment activities. Since the bedrock that is removed below the water table represents a potential source to groundwater once the dewatering is complete, removal of the soils and bedrock will mitigate some of the PCE mass beneath the building. All soils will be removed and disposed of in accordance with the CDPHE-approved MMP. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ • VMS at the Armory - A VMS will be installed within the adjacent Armory building in May 2025. This system was designed to remove mass from beneath the building while also acting as a vapor mitigation system for the Armory building. The system was designed with a conservative 15’ radius of influence for the Armory building, Figure 2. There are a total of four horizontal runs being installed within the basement of the Armory, three of which will influence the subsurface vapors of the 300 E Mountain Avenue property. 3.0 Vapor Mitigation System Design The overall VMS is designed around two methods of mitigating the intrusion of VOCs into the new basement. First, a geomembrane has been specified for this project which has been designed to restrict migration of volatile chemicals of concern, including PCE, into the new building. The membrane will bond to the bottom of the slab and become integral with the concrete slab. Secondly, an HVAC system has been specified for the basement, which can maintain a neutral pressure within the basement space and includes a fresh air exchange that results in nearly continuous air exchanges within the basement. These elements are discussed in detail below. 3.1 Geomembrane Specifications A PREPRUFE® 300R/160R Plus geomembrane has been specified for this project as part of the Design Development package. The geomembrane is designed to act as a water and vapor barrier for the new construction. A contiguous membrane is proposed for under slab and outside of basement foundation walls. This membrane is noted in System Notes for floor “F1” on sheet G0.3 (pg. 5) and noted in wall sections on sheets A4.2 & A4.3 (pg. 20 & 21) of the preliminary building design Attachment 1. The specification sheet for the PREPRUFE® 300R/160R membrane is included as Attachment 2. According to the manufacturer, the PREPRUFE® 300R is a heavy-duty 46 mil grade membrane designed for horizontal and vertical use. The typical specification for a vapor intrusion membrane is 15 mil, so the robust nature of the 46 mil membrane is expected to deliver high performance. The planned membrane is designed for use below slabs and can accept the placement of heavy reinforcement using conventional concrete spacers. This geomembrane has a calculated diffusion coefficient of <1.3x10-11 meters per second (m/s) for PCE. The PREPRUFE® 160R is 32mil grade membrane designed for vertical use in to secure the walls of the foundation. This geomembrane has a calculated diffusion coefficient of <9.0x10-12 m/s for PCE. The PREPRUFE® system has numerous components to assure it is properly sealed and prevents the intrusion of water and vapors, including: 4-inch wide tape for covering cut edges, roll ends, penetrations and detailing; 8-inch wide tape for detailing, and may be used at construction joints for optional additional protection; a liquid membrane product for sealing around penetrations; hydrophilic water stop for joints in concrete walls and ﬂoors; a two component liquid flashing NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ which fully bonds to concrete poured onto it, providing seamless bonding to PREPRUFE and the structural concrete poured onto it and other components. Upon completion of the membrane installation and prior to pouring of the foundation, smoke testing will be performed on the water/vapor barrier. A Professional engineer will be on-site to oversee and approve the findings of the smoke testing. Any deficiencies will be remedied and retested prior to sign off. 3.2 HVAC Specifications The basement of 300 E Mountain will feature a dedicated 2-Ton heat pump fan coil unit, and a 575 cubic feet per minute (CFM) rated energy recovery ventilator serving as the fresh air system. The fan coil system will be completely local to the basement environment and not supply or return airflow from other levels in the building. This includes a dedicated exhaust/return duct. The Energy Recovery Ventilator (ERV) will exhaust 575 CFM and supply an equal 575 CFM as to maintain neutral pressure in the basement space. This will ensure the space will not push air into other parts of the building, nor draw air in from other parts of the building or below the slab. The ERV is sized per the 2021 IMC to provide 0.12 CFM/sq ft of fresh ventilation air per the “Storage Room” type occupancy. The ERV will have the capability of running full time. This ventilation rate will completely change over the volume of air in the basement with outside air approximately every 90 minutes. The exhaust for this system will be located a minimum of 10 feet from the first and second floor rooftop units. The HVAC design and specifications are included as Attachment 3. 4.0 Operations, Maintenance and Monitoring Prior to receiving a certificate of occupancy from the City of Fort Collins, indoor air testing and reporting is required. Once the building has been deemed a sealed envelope including all doors, windows, hardware, plumbing fixtures/ drains, walls and faceplates and the HVAC systems are operational, indoor air sampling will be completed. One (1) indoor air sample will be collected from each of the three levels of the building. Each indoor air sample will be collected over an 8-hour period with minimal to no disturbance of the building (ie. doors or windows being opened). The air samples will be submitted to Technology Laboratory, Inc. in Fort Collins, Colorado for laboratory analysis of volatile organic compounds (VOCs) by EPA Method TO-15. After the initial air sampling event, air samples will be collected weekly for the first four weeks and monthly thereafter for the first four months of occupancy and a minimum of semi-annual indoor air sampling thereafter. The Corrective Action Plan will dictate any changes to this monitoring plan. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ The air sample data will be compared to the Residential and Commercial/Industrial Air Regional Screening Levels (RSLs) (USEPA 2024) assuming a cancer target risk level of 1E-06 and non-cancer target quotient of 1.0. In the event that elevated levels of chemicals of concern are detected for building occupants, the MEP contractor will be notified and the system adjusted to run full time to increase the air exchange and mitigate the contamination. After the HVAC system has been operating at capacity for a minimum of 48 hours, weekly monitoring will resume for a minimum of four consecutive weeks. 5.0 Reporting A monthly monitoring report will be issued after the first 4 weeks of indoor air sampling has been conducted. If an exceedance is identified, the CDPHE will be notified by email memorandum upon receipt of the laboratory data. Semi-annual reporting will then be integrated into the semi-annual CAP reporting. NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Figures: Analyte Depth (ft) Analyte 5 5 10 Tetrachloroethene 9 14 14 Soil Characterization Map Former Paramont Cleaners 300-314 East Mountain Avenue, Fort Collins, CO Analyte Depth (ft) 4 Tetrachloroethene 10 14 BH13 Analyte Depth (ft) 5 Tetrachloroethene 10 5 10 13 0 Result <0.01 mg/kg <0.01 mg/kg • 0.558 mg/kg Scale = 1 :480 40 Result Result 80 ft 0 Soil Boring 6, Temporary Piezometer D Site Boundary* Notes: mg/kg • milligrams per kilogram ND • No Detections *Site boundary is approximate t N Disclaimer: Not a surveyed map. Every effort was made to ensure the accuracy of the data provided and displayed. This map is intended ror reference purposes only and should not be used as a survey instrument. Figure 1 Datum: NAD83 Projection: StatePlane CO North Created: Nov 24, 2024 Author: C VanWyngarden Sources: Google Earth Imagery (042323) � �� •r. ... .,. ... STORAGEBAND GREEN ROOM HALLWAY MECH. ROOM LAVATORY TOILET UP UP SLAB ON GRADE ABOVE ON COMPACTED FILL SLAB ON GRADE ABOVE ON COMPACTED FILL SLAB ON GRADE ABOVE ON COMPACTED FILL BREAK ROOM STEP UP OPEN AREA = I-BEAM IN CONCRETE FLOOR = PROPOSED HORIZONTAL WELL LOCATIONS = 15 FOOT RADIUS OF INFLUENCE PROPOSED OPENING 12'-6"4'-4"20' FORMER LYRIC PROPERTY UTILITY ROOM STEP UP HW - 4 HW - 3 HW-2 HW-1 VENT TO ROOF = HORIZONTAL WELL VENT PIPING MOUNTED ON CEILING OF BASEMENT = VERTICAL RISER = EXISTING SEWER 11 x 1 7 - - - U S E R : L C o o k - - - A T T A C H E D X R E F ' S : - - - A T T A C H E D I M A G E S : DR A W I N G N A M E : \ \ e m p l o y e e s . r o o t . l o c a l \ e n v \ P P L \ F T C \ P r o j e c t s \ R e m e d i a t i o n \ A r m o r y \ A r m o r y S i t e P l a n s . d w g - - - P L O T D A T E : O c t o b e r 3 1 , 2 0 2 4 - 1 2 : 0 4 P M - - - L A Y O U T : F I G U R E 4 PROJECT: TITLE: DATE: DRAWN BY: CHECKED BY: APPROVED BY: PROJ NO.: FILE NO.: Version: 2017-10-21 ARMORY VAPOR MITIGATION SYSTEM PROPOSED HORIZONTAL WELL LAYOUT SHOWING 15' RADIUS OF INFLUENCE 632665.0000.0000 Armory Site Plans.dwg L COOK C PEARSON C PEARSON FIGURE 4 OCTOBER 2024 1526 Cole Boulevard Building 3, Suite 150 Lakewood, CO 80401 Phone: 303.792.5555 8 16 SCALE IN FEET 0 NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Attachment 1 - Wall Sections A4.3 and A4.2 FIRST FLOOR 100' - 0" SECOND FLOOR113' - 3" ARMORY BASEMENT91' - 0" BASEMENT88' - 0" A 6"8" 6' - 1 " 2' - 0 " W1 12 ' - 6 " 13 ' - 3 " 12 ' - 0 " RIGID INSULATING BLOCK AT BASE OF MASONRY. 3"/R-15 RIGID INSULATION. WATERPROOFING MEMBRANE. REINF. CONC. FOUNDATION WALL, RE: STRUCT. F2 F2 3' - 0 " 9' - 0 " 2' - 0" F1 10 ' - 0 " 10 ' - 0 " 5" 9' - 0 " 1' - 0 " 2.5"/R-10 SEMI-RIGID INSULATION BOARD WITH BLACK FACER. VERT. ALUM. J-CHANNELS OF FASTENING SYSTEM. THERMALLY ISOLATED ZEE-FURRING @ 24" O.C. HORIZONTALLY. HIGH-PRESSURE LAMINATE CLADDING SYSTEM ON CONCEALED FASTENING SYSTEM (SEE SYS. NOTES. PREFIN. MTL. PARAPET COPING, WITH FRONT FLANGE CONCEALED BEHIND FACE CLADDING. PREFIN. THRU-WALL FLASHING. COMPRESSIBLE FILLER CAPPED W/ SEALANT. PAVING AND BASE, RE: CIVIL. ROOFING MEMBRANE CONTINUOUS OVER PARAPET WALL AND OVERLAPPING AWB. CONCRETE PILASTER OPTION I.L.O. STEEL COL. IN BASEMENT LEVEL, FOR BASEMENT PERIMETER LOCATIONS. 1' - 0" INTERIOR FACE OF METAL STUDS. REINF. CONC. FOOTING, RE: STRUCT. R1 MODULAR BRICK VENEER (SEE SYS. NOTES). PRECAST SILL W/ DRIP. RIGID INS. OVER AWB. & SHTG. THRU-WALL FLASHING PREFIN. SILL FLASHING OVER AIR SPACE. ALUM. WINDOW FRAME & GLAZING. THRU-WALL FLASHING OVER WINDOW HEAD. AWB WRAPPED AROUND PROJECTING PT WOOD BUCK & RETURN INTO OPENING. VERTICAL BRICK PATTERN, 1/2" INSET (SEE ELEV.). QUARTZ WINDOW SILLS. GYP.BD. & VAPOR BARRIER. WALL BASE PER FINISH PLAN. (BEYOND) EXPOSED BASE PLATE STEEL COLUMN BEYOND (SEE CONC. PILASTER OPTION ABOVE) STEEL BEAM (BEYOND), RE: STRUCT. CEILING PER REFL. CEILING PLAN (GYP.BD. ON SUSPENSION SYSTEM INDICATED). WF STEEL JOIST PER STRUCT. INSUL. DUCT PER MECH. (BEYOND) HSS COLUMN PER STRUCT. VAPOR BARRIER RETURN AND SEALED TO FLANGE OF BEAM. GYP.BD. RETURNS AT HEAD & JAMBS. DEFLECTION CLIPS PER STRUCT. STEEL ANGLE AT DECK EDGES PER STRUCT. MODULAR BRICK VENEER. PRECAST SILL W/ DRIP. PREFIN. SILL FLASHING OVER AIR SPACE. ALUM. WINDOW FRAME & GLAZING. 124' - 0" PRECAST SILL SPRAY FOAM INSULATION IN STUD CAVITIES TO ENHANCE AIR BARRIER CLOSURE. GALV. STEEL LINTEL PER STRUCT. 2X10 PT WOOD BUCK AT SILL, JAMBS & HEAD OF OPENINGS. WRAP AWB AROUND AND RETURN INTO OPENINGS. SUBGRADE PER GEOTECHNICAL REPORT. SHORING AS REQUIRED. 18" CONC. MAT FOUNDATION FLOOR, SLOPED TO DRAIN. CONTINUOUS WATERPROOFING UNDER MAT FOUNDATION. SPF IN FLUTES WHERE DECK IS PERPENDICULAR TO BEAM. STEEL SUPPORT ANGLE (RE: STRUCT.), WITH THRU-WALL FLASHING. BRICK SOLDIER COURSE. FIRST FLOOR 100' - 0" SECOND FLOOR113' - 3" ARMORY BASEMENT91' - 0" BASEMENT88' - 0" A 10 ' - 6 " 5' - 2 " 3' - 3 " 10 ' - 0 " 10 " W2 MODULAR BRICK VENEER BEYOND. 6" MULLION CAP AS ACCESSIBLE COUNTERTOP EXTENSION. 9' - 0 " 1' - 0 " EDGE OF FOUNDATION WALL BEYOND PREFINISHED METAL FLASHING. PREFIN. METAL PANEL ON 1/2" MARINE-GRADE PLYWOOD OVER 6" METAL FRAMING. FRAMING BEYOND. PREFIN. ALUM. T&G SOFFIT. RIGID C.I. AND AWB AROUND BEAM. F2 F2 R1 THERMALLY-ISOLATED ZEE FURRING WITH 2.5" SEMI-RIGID INSULATION. CEILING PER REFL. CEILING PLAN 1' - 11" LIGHT-GAUGE METAL FRAMED AWNING STRUCTURE. LT.GA. METAL FRAMED WRAPOVER FEATURE. PARAPET FRAMING WRAPPED WITH AWB LAYER. 3' - 0"ROOF MEMBRANE ADA SIDE REACH OVER 10"D OBSTRUCTION [ANSI A117.1 308.3.2]. RE: WALL SECTION FOR TYP. FOUNDATION AREA NOTES /1 A4.2 F1 FIRST FLOOR 100' - 0" SECOND FLOOR113' - 3" ARMORY BASEMENT91' - 0" BASEMENT88' - 0" 5 (BEYOND) NORTH / LOW 91' - 7" SOUTH / HIGH ARMORY BASEMENT 2" SLIP JT. TO ALLOW FREE HORIZONTAL MOVEMENT. 3" GAP, RE: STRUCT. PT'D ANGLE TO SPAN OVER GAP. CONT. PREFIN. ALUM. POWER/DATA ENCLOSURE. (E) RUBBLE FOUNDATION (ASSUMED) TO BE FIELD-VERIFIED. GYP.BD. ON METAL SUSPENSION SYSTEM. BULKHEAD/SOFFIT ASSEMBLY, RE: REFL. CEILING PLANS. 3' - 6" KALWALL SKYLIGHT SYSTEM 8" 2" 12" (DASHED) RIGID HSS FRAMES, RE: STRUCT. 3" GAP FILLED WITH INSUL. BATTS. STEEL ANGLE TO COVER B.O. GAP. EXPOSED FACE OF EXISTING BRICK. 45-DEGREE PLANE LIMIT OF DISTURBANCE. 45° REINF. CONCRETE FOUNDATION STEP TO PROTECT & RETAIN (E) ARMORY FOUNDATION INTEGRITY, RE: STRUCT. REINF. CONCRETE WALL TO MAINTAIN (E) ARMORY BASEMENT WALL INTEGRITY, RE: STRUCT. MFR.'S EDGE CLOSURE SYTEM. FLASHING OVER TERM. BAR. (DASHED) BEAM BEYOND. ELASTOMERIC BELLOWS JT. F2 F2 R1 11 ' - 0 " O P N G . H T . CONTINUOUS WATERPROOFING MEMBRANE CONC. MAT FNDN. SLAB, RE: STRUCT. F1 NOTE: STRUCTURAL DETAILS TO BE REVISED TO MORE CLOSELY MATCH THIS SLOPED CONDITION ABOVE. 419 Canyon Ave Suite 200, Fort Collins, Colorado 80521 970.224.1191 | www.VFLA.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. VAUGHT FRYE LARSON ARONSON ARCHITECTURE + INTERIORS, INC. THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF VFLA. COPYRIGHT: SHEET ISSUANCES DESCRIPTION DATE NOT FOR C O N S T R U C T I O N FOR REF E R E N C E O N L Y A R C H I T E C T U R E + I N T E R I O R SA R C H I T E C T U R E + I N T E R I O R S CIVIL ENGINEER: NORTHERN ENGINEERING | EPS GROUP LANDSCAPE ARCHITECT: RIPLEY DESIGN STRUCTURAL ENGINEER: KL&A MECHANICAL & PLUMBING ENGINEERS: INTEGRATED MEP ELECTRICAL ENGINEER: ADONAI PROFESSIONAL SERVICES, INC. 12 / 1 3 / 2 0 2 4 7 : 1 5 : 0 4 P M 12/13/2024 7:15:04 PMAu t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n t a i n A v e / 3 0 0 - 3 1 4 E M o u n t a i n _ V F L A_ R 2 4 . r v t A4.2 WALL SECTIONS 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE. FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT 2023-53 SCALE: 1/2" = 1'-0"1 TYP. WALL SECTION SCHEMATIC DESIGN 08-30-2024 DESIGN DEVELOPMENT 12-13-2024 SCALE: 1/2" = 1'-0"2 WALL SECTION @ AWNING FEATURE SCALE: 1/2" = 1'-0"3 WALL SECTION @ ARMORY WALL FIRST FLOOR 100' - 0" SECOND FLOOR113' - 3" BASEMENT88' - 0" B W2 STEEL FRAMING, RE: STRUCT. 3/4" P.T. PLYWD. ON 6" L.G. FRAMING. PREFIN. ALUM. PLANK SOFFIT (RE: R.C.P.) ON 3-5/8" L.G. FRAMING. T.P.O. ROOFING ON TAPERED INSUL. PREFIN. COPING. PARAPET BEYOND.OVERFLOW SCUPPER BEYOND. 5' - 2"1' - 0"L.G. HEADER FILLED WITH S.P.F. GRADE BEAM, RE: STRUCT. CONC. SLAB ON VOID FORM, RE: STRUCT. GALV. ANGLE CAP OVER INSUL. EDGE. PREFIN. METAL PANELS ON 1/2" M.G. PLYWD. R1 PREFIN. METAL PANELS ON 1/2" M.G. PLYWD. ON EXT. F.G. SHTG. PREFIN. MTL. FLASHING OVER TERM. BAR. PAVING & BASE, RE: CIVIL. 1% SLOPE WOOD-LOOK CEILING SYS. ON MTL. SUSPENSION SYS., RE: R.C.P. A.W.B. CONT. @ SOFFIT & UP TO T.O. PARAPET. MODULAR BRICK FACE BEYOND. STOREFRONT & INSULATED GLAZING. H.P.L. CLADDING PER SYSTEM NOTES. MFR.'S PERF. CLOSURE. PREFIN. ALUM. PLANK SOFFIT ON T.B. ZEE- FURRING W/ 2.5" SEMI-RIGID INSUL. ON A.W.B. ON E.F.G.S. ON 3-5/8" L.G. FRAMING. H.P.L. CLADDING PER SYSTEM NOTES. 10 ' - 0 " SLOPED H.P.L. PARAPET CAP (MFR.'S FINISH- MATCHED EXPOSED FASTENERS WITH GASKET RINGS ON TOP). F1 NOTE: METHOD OF FROST PROTECTED ENTRY IS TBD FOR DESIGN DEVELOPMENT. RE: WALL SECTION FOR TYP. FOUNDATION AREA NOTES /1 A4.2 FIRST FLOOR 100' - 0" SECOND FLOOR113' - 3" BASEMENT88' - 0" 10 ' - 0 " (+ / - ) 10 " 1' - 5 " 3' - 3 " W3 W1 F2 F2 R1 F1 10 ' - 0 " 1' - 0 " FUTURE CEILING OPTIONS BY TENANT FUTURE CEILING OPTION BY TENANT. DEFL. CLIP, RE: STRUCT. SPANDREL GLASS LOW-PROFILE PARAPET CAP ROOF MEMBRANE OVER TOP OF PARAPET BACKER PARAPET PRECAST SILL W/ DRIP EDGE. PREFIN. FLASHING OVER INSUL. SEALED TO PC. SILL. P.T. 2x12 NAILERS, CUT TO CURVED RADIUS. CURVED GYP.BD. ON BENDABLE FRAMING (B.O.D.: READY-HAT® BY SIMPSON) QUARTZ WINDOW SILL CURTAIN WALL SYSTEM. MFR.'S COMPENSATION HEAD TRACK. FACETED BEAM BEYOND, RE: STRUCT. 12 ' - 1 0 " CURTAIN WALL SYSTEM. PAINTED GYP.BD. OVER EXPOSED DECKING. STEEL WF BEAM, RE: STRUCT.METAL WALL PANEL AFFIXED TO WEB OF WF BEAM. CURVED PREFIN. METAL PANEL ON M.G. PLYWD. SUBSTRATE, RE: SYSTEM NOTES. BENDABLE FRAMING (B.O.D.: READY-HAT® BY SIMPSON) 3" VERT. ZEE-FURRING @ 16" O.C. (ALIGNED WITH WALL STUDS). 2" RIGID CONTINUOUS INSULATION A.W.B. ON E.F.G.S. CLIPS, RE: STRUCT. RE: NOTES AT FIRST FLOOR FOIL-FACED V.B. TURNED AND SEALED TO FLANGE. CURTAIN WALL SYSTEM BEYOND P.T. 2x12 NAILERS, CUT TO CURVED RADIUS. PREFIN. FLASHING WITH DRIP EDGE. CURTAIN WALL SYSTEM BEYOND RE: WALL SECTION FOR TYP. FOUNDATION AREA NOTES /1 A4.2 CURVED FOUNDATION WALL AND BRICK LEDGE PREFIN. SILL FLASHING. 419 Canyon Ave Suite 200, Fort Collins, Colorado 80521 970.224.1191 | www.VFLA.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. VAUGHT FRYE LARSON ARONSON ARCHITECTURE + INTERIORS, INC. THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF VFLA. COPYRIGHT: SHEET ISSUANCES DESCRIPTION DATE NOT FOR C O N S T R U C T I O N FOR REF E R E N C E O N L Y A R C H I T E C T U R E + I N T E R I O R SA R C H I T E C T U R E + I N T E R I O R S CIVIL ENGINEER: NORTHERN ENGINEERING | EPS GROUP LANDSCAPE ARCHITECT: RIPLEY DESIGN STRUCTURAL ENGINEER: KL&A MECHANICAL & PLUMBING ENGINEERS: INTEGRATED MEP ELECTRICAL ENGINEER: ADONAI PROFESSIONAL SERVICES, INC. 12 / 1 3 / 2 0 2 4 7 : 1 5 : 4 5 P M 12/13/2024 7:15:45 PMAu t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n t a i n A v e / 3 0 0 - 3 1 4 E M o u n t a i n _ V F L A_ R 2 4 . r v t A4.3 WALL SECTIONS 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE. FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT 2023-53 DESIGN DEVELOPMENT 12-13-2024 SCALE: 1/2" = 1'-0"1 WALL SECTION @ MAIN ENTRY SCALE: 1/2" = 1'-0"2 WALL SECTION @ SOUTHWEST CORNER NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Attachment 2 – Membrane Specifications PREPRUFE® 300R/160R Plus & PREPRUFE® 300R/160R Plus LT Data Sheet Pre-applied waterproofing membranes that bond integrally to poured concrete for use below slabs or behind basement walls on confined sites. View Sustainability Certifications: View Sustainability Certifications: 300R Plus300R Plus , , 160R Plus160R Plus , , 300R Plus LT300R Plus LT, , 160R160R Plus LTPlus LT Product Description GCP PREPRUFE 300R/160R Plus pre applied waterproofing membranes are unique composite sheets comprised of a thick HDPE ﬁlm, pressure sensitive adhesive, and weather resistant protective coating. Designed with Advanced Bond Technology™ and dual adhesive ZipLap™ seams, PREPRUFE 300R/160R Plus form a unique, integral bond to poured concrete. This integral bond is specifically designed to provide a robust barrier to water, moisture and gas and prevents both the ingress and lateral migration of water. PREPRUFE 300R/160R Plus are release liner free and designed for eﬃcient, reliable installation. PREPRUFE Plus ZipLap™ seams allow for an adhesive to adhesive bond at membrane sheet overlaps and deliver superior performance in harsh conditions without the need for specialized equipment, heat or power. ® ® ®® Product Data Sheets Page 1 of 8 Advantages System Components: Membrane Ancillary Components (refer to the most current Data Sheets for all system components available on gcpat.com)Ancillary Components (refer to the most current Data Sheets for all system components available on gcpat.com) The unique continuous adhesive bond to concrete poured against it prevents water migration and makes it unaffected by ground settlement beneath slabs. Designed with fully adhered adhesive to adhesive watertight ZipLap™ seams and easy to execute detailing. Provides a barrier to water, moisture and gas physically isolating the structure from the surrounding substrate. Easy roll/kick out installation reduces installation time and cost. Release liner free, expedites installation and reduces construction site waste. Simple and quick to install requiring no priming or fillets. Can be applied to permanent formwork - allows maximum use of conﬁned sites Can be trafficked immediately after application and ready for immediate placing of reinforcement Membrane is unaffected by wet jobsite conditions - cannot activate prematurely Inherently waterproof as supplied. Passive non-reactive waterproofing system does not require water activation Waterproofing is not reliant on conﬁning pressures or hydration PREPRUFE 300R/160R Plus unaffected by freeze/thaw, wet/dry cycling® Chemical resistance – designed to help protect structure from salt or sulphate attack eﬀective in most types of soils and waters, Gas resistance – PREPRUFE 300R/160R Plus will restrict the ingress of Methane, Radon, Benzene, Toluene, Gasoline & other VOCs Trichloroethylene & Tetrachloroethylene (TCE/PCE) into buildings from landfill and naturally occurring sources and satisfy the performance criteria for a gas-resistant membrane. ® Exposure time - PREPRUFE Plus unique formulation allows protection from UV for up to 56 days in most climatic conditions. Where ambient temperatures will exceed more than 100°F(38°C) for more than 7 days, concrete should be placed within 42 days of installation. ® PREPRUFE 300R Plus/300R Plus LT— heavy-duty 46mil grade membrane designed for horizontal and vertical use. Designed for use below slabs and on rafts (i.e. mud slabs) and for vertical blind side applications. Designed to accept the placing of heavy reinforcement using conventional concrete spacers. ® PREPRUFE 160R Plus/160R Plus LT — 32mil grade membrane designed for vertical use in blindside, zero property line applications against soil retention systems. ® PREPRUFE Tape – 4 in. wide tape for covering cut edges, roll ends, penetrations and detailing ® PREPRUFE CJ Tape – 8 in. wide tape for detailing, and may be used at construction joints for optional additional protection ® BITUTHENE Liquid Membrane - for sealing around penetrations, etc.® ADCOR - hydrophilic waterstop for joints in concrete walls and ﬂoors® PREPRUFE Tieback Covers - preformed cover for soil retention wall tieback heads® DE NEEF INJECTO Tube groutable Waterstop for non-moving concrete construction joints and penetrations®® PREPRUFE Liquid Flashing - Two component liquid flashing which fully bonds to concrete/shotcrete poured onto it providing seamless bonding to Preprufe and structural concrete poured onto it. ® Product Data Sheets Page 2 of 8 Limitations of Use Special Note: When this information is printed from the gcpat.com global website, a footer appearing on this document will restrict its applicability to the United States. Note that the information and references in this document are hereby expanded and apply to North, Central and South America. Safety and Handling Users must read and understand the product label and Safety Data Sheets (SDS’s) for each system component before use. All users should acquaint themselves with this information prior to working with the material. Carefully read detailed precaution statements on the product labels and SDS’s before use. The most current SDS’s can be obtained from the GCP web site at gcpat.com. Storage Installation Technical Support, Details and Technical Letters The most up to date detail drawings and technical letters are available at gcpat.com. For complete application instructions, please refer to the current Literature on (www.gcpat.com). Documents in hardcopy as well as information found on websites other than www.gcpat.com may be out of date or in error. Before using this product it is important that information be conﬁrmed by accessing www.gcpat.com and reviewing the most recent product information, including without limitation Product Data Sheets, Technical Bulletins, Detail Drawings and detailing recommendations. Please review all materials prior to installation of PREPRUFE 300R/160R Plus. Support is also available by full-time technically trained GCP ﬁeld sales representatives and technical service personnel, backed by a central research and development technical services staff. For technical assistance with detailing and problem solving please contact your local representative. A GCP Representative locater is available at www.gcpat.com. Approved uses only include those uses specifically detailed in this Product Data Sheet and other current Product Data Sheets that can be found at gcpat.com PREPRUFE 300R/160R Plus Membranes are not intended for any other use. Contact GCP Technical Services where any other use is anticipated or intended. ® PREPRUFE 300R/160R Plus Membranes are designed for in-service (throughout the building life) temperatures below 120°F(49°C). Preprufe membrane remain unaffected during concrete curing, even when temperature temporarily exceed 120F. ® PREPRUFE 160R Plus/160R Plus LT membrane should not be used in horizontal applications.® PREPRUFE 300R/160R Plus Membranes should not be used with conventional two-sided formwork. (See PREPRUFE Technical Letter # 13 Forming Systems For Use with PREPRUFE Membranes) ® ®® Observe 1 year shelf life and use on a first in first out basis Store in dry conditions between 40°F (4.5°C)-90°F (32°C) Store off ground under tarps or otherwise protected from rain and ground moisture See PREPRUFE Technical Letter #30 Shelf Life/Storage and Handling of GCP Waterproofing® ® Product Data Sheets Page 3 of 8 Temperature Requirements Substrate Preparation All surfaces –It is essential to create a sound and solid substrate to eliminate movement during the concrete pour. Substrates must be regular and smooth with no gaps or voids greater than 0.5 in. (12 mm). Grout around all penetrations such as utility conduits, etc. for stability. Horizontal – The substrate must be free of loose aggregate and sharp protrusions. Avoid curved or rounded substrates. When installing over earth or crushed stone, ensure substrate is well compacted to avoid displacement of substrate due to traﬃc or concrete pour. The surface does not need to be dry, but standing water must be removed. Vertical – Use concrete, plywood, insulation or other approved facing over sheet piling to provide support to the membrane. Board systems such as timber lagging must be close butted to provide support and not more than 0.5 in. (12 mm) out of alignment. HYDRODUCT 220 drainage sheet can be used to bridge voids, gaps and out of alignment up to 2 in. (50mm) prior to PREPRUFE 300R/160R Plus installation. Membrane Application PREPRUFE 300R/160R Plus has a colored zip strips at the top and bottom of the seam area on the edge of the roll. Both zip strips cover an aggressive adhesive. Once the green zip strip on the top of the membrane and the blue zip strip on the bottom of the membrane are removed, a strong adhesive to adhesive bond is achieved in the overlap area. This PREPRUFE ZipLap™ provides an enhanced sealing of the overlaps in harsh conditions combined with a fast and easy way of execution without specialized equipment, heat or power. Horizontal substrates – (PREPRUFE 300R Plus/ PREPRUFE 300R Plus LT membrane only) – PREPRUFE 300R Plus & PREPRUFE 300R Plus LT membrane can be applied in horizontal applications to smooth prepared concrete, carton forms or well rolled and compacted earth or crushed stone substrate. Kick out or roll out the membrane HDPE ﬁlm side to the substrate with the green zip strip facing towards the concrete pour. End laps should be staggered to avoid a build-up of layers. Leave green and blue zip strips on the membrane until overlap procedure is completed. When completed remove release liner. When installing over carton forms, contact your local GCP representative. Accurately position succeeding sheets to overlap the previous sheet 3 in. (75 mm) along the marked selvedge with the blue zip strip on top of the green zip strip. Ensure the underside of the succeeding sheet is clean, dry and free from contamination before attempting to overlap. Peel back and remove both the green and blue zip strips in the overlap area to achieve an adhesive to adhesive bond at the overlap. Ensure a continuous bond is achieved without creases and roll firmly with a heavy roller. PREPRUFE 160R Plus LT and PREPRUFE 300R Plus LT membrane can be applied between temperature 25ºF to 95ºF. PREPRUFE 300R Plus & PREPRUFE 160R Plus membranes can be used for application above 65ºF. ®® ®® PREPRUFE Tape LT and PREPRUFE CJ Tape LT can be applied between temperature 25ºF to 95ºF. PREPRUFE Tape HC and PREPRUFE CJ Tape HC can be used for application above 50ºF. ®®® ® ® ® ® ® ®®® ® Product Data Sheets Page 4 of 8 Vertical substrates – PREPRUFE 300R/160R Plus membranes can be applied vertically to permanent formwork or adjoining structures. Mechanically fasten the membrane vertically using fasteners appropriate for the substrate with the green zip strip facing towards the concrete pour. The membrane may be installed in any convenient length. Fastening can be made through the selvedge within 0.5 in. (50 mm) from the leading edge of the membrane using a small low proﬁle head fastener so that the membrane lays ﬂat and allows ﬁrmly rolled overlaps. Accurately position each succeeding sheet to overlap the previous sheet 3 in. (75 mm) along the marked selvedge with the blue zip strip on top of the green zip strip. Ensure the underside of the succeeding sheet is clean, dry and free from contamination before attempting to overlap. Peel back and remove both the green and blue zip strips in the overlap area to achieve an adhesive to adhesive bond at the overlap. Roll ﬁrmly to ensure a watertight seal. Note that PREPRUFE 300R/160R Plus membranes should not be used with conventional two-sided formwork. (See PREPRUFE Technical Letter # 13 Forming Systems For Use with PREPRUFE Membranes) Roll ends and cut edges – Overlap all roll ends and cut edges by a minimum 3 in. (75 mm) and ensure the area is clean and free from contamination, wiping with a damp cloth if necessary. Allow surface to dry and apply PREPRUFE Tape centered over the lap edges and roll ﬁrmly. Immediately remove tinted plastic release liner from the tape. Membrane Repair Inspect the membrane before installation of reinforcement steel, formwork and ﬁnal placement of concrete. The membrane can be easily cleaned by power washing if required. Repair damage by wiping the area with a damp cloth to ensure the area is clean and free from dust, and other contaminants and allow the membrane to dry. Repair small punctures and slices 0.5 in. (12 mm) or less by applying PREPRUFE Tape centered over the damaged area. Repair punctures and holes larger than 0.5 in. (12mm) by applying a patch of PREPRUFE Membrane. Extend the patch 6 in. (150 mm) beyond the damaged area. Seal all edges of the patch with PREPRUFE Tape. Where exposed selvedge has lost adhesion or laps have not been sealed, ensure the area is clean and dry and cover with fresh PREPRUFE Tape. Any areas of damaged adhesive should be covered with PREPRUFE Tape. All PREPRUFE Tape must be rolled ﬁrmly and the tinted release liner removed. Slices or relief cuts can be butted or overlapped and repaired by applying PREPRUFE Tape centered over the edge of the overlap or center of the butt joint. Where it is not possible to create a butt joint or overlap, repair with fresh membrane and PREPRUFE Tape as detailed above. Pouring of Concrete Ensure the plastic release liner is removed from all PREPRUFE Tapes. PREPRUFE 300R Plus/300R Plus LT membrane can be returned up the inside face of slab formwork. To attain a fully bonded system and to allow a tie in with BITUTHENE self-adhered membrane or PROCOR ﬂuid-applied membrane to all vertical structural surfaces after removal of formwork. Ensure to cut the length of the membrane (terminate) to height of formwork less 2 inches. ® ®® Rebar Chairs: See PREPRUFE Technical Letter #15 Rebar Chairs on PREPRUFE Membranes.®® PREPRUFE 160R Plus & 160R Plus LT membrane may not be used in horizontal applications.® ® ® ®® ® ® ® ® ® ®® ® ® ® Product Data Sheets Page 5 of 8 Under most climatic conditions concrete should be poured within 56 days of membrane installation. Where ambient temperatures will exceed 100ºF (38°C) for more than a total of 7 days, concrete should be placed within 42 days of installation of the membrane. Concrete must be placed and compacted carefully to avoid damage to the membrane. Never use a sharp object to consolidate the concrete. Removal of Formwork A minimum concrete compressive strength of 3000 psi (20 N/mm ) is required prior to stripping formwork supporting PREPRUFE 300R/160R Plus Membranes. Premature stripping may result in displacement of the membrane and/or spalling of the concrete. (see PREPRUFE Technical Letter #17 Removal of Formwork Placed against PREPRUFE 300R/160R Plus Membranes). After removal of the formwork and prior to backﬁlling, all exposed PREPRUFE 300R/160R Plus Membrane must be protected from damage with an approved protective course. Supply Dimensions (Nominal)PREPRUFE 300R Plus PREPRUFE 300R Plus LT PREPRUFE 160R Plus PREPRUFE 160R Plus LT Roll size Note#1 3 ft. 10 in. X 102 ft. (392 ft ) 1.17m x 31.15m (36.4 m ) 3 ft. 10 in. X 120 ft. (460 ft ) 1.17m x 36.6m (42.8 m ) Roll weight 108 lbs (49 kg)92 lbs (42 kg) Minimum side/end laps 3 in. (75 mm)3 in. (75 mm) Note: when calculating coverage account for the Minimum side/end laps Note#1 Individual roll length may vary +/-1% Physical Properties Property PREPRUFE 300R Plus & PREPRUFE 300R Plus LT PREPRUFE 160R Plus & PREPRUFE 160R Plus LT Test Method Color white white Thickness 0.046 in. (1.2 mm)0.032 in. (0.8 mm)ASTM D3767 Lateral Water Migration Resistance Pass at 231 ft (71 m) of hydrostatic head pressure Pass at 231 ft (71 m) of hydrostatic head pressure ASTM D5385 Long Term Lateral Water Migration Resistance, After 3 Years Water Immersion Pass at 231 ft (71 m) of hydrostatic head pressure Pass at 231 ft (71 m) of hydrostatic head pressure ASTM D5385 Resistance to hydrostatic head 231 ft (71 m)231 ft (71 m)ASTM D5385 Resistance to hydrostatic head, Functional details 231 ft (71 m)231 ft (71 m)ASTM D5385 Tensile strength, film 4000 psi (27.6 Mpa)4000 psi (27.6 Mpa)ASTM D412 2 ® ®® ® ® ® ® ® 2 2 2 2 ® ® ® ® 1 1 2 3 Product Data Sheets Page 6 of 8 Tensile strength after soil burial, film Retain >90%Retain >90%ASTM D412/ASTM D4068 Elongation 500%500%ASTM D412 Elongation after soil burial Retain >90%Retain >90%ASTM D412/ASTM D4068 Low temperature flexibility Unaffected at -20°F (-29°C)Unaffected at -20°F (-29°C)ASTM D1970 Crack cycling at -9.4°F (-23°C), 1/8" Movement Unaffected, Pass Unaffected, Pass ASTM C1305/ASTM C836 Puncture resistance 225lbs (1000N)100 lbs (445 N)ASTM E154 Environmental stress resistance Pass Pass ASTM D1693 Peel adhesion to concrete 10 lbs/in. (1750N/m) 10 lbs/in. (1750N/m) ASTM D 903 Peel adhesion to concrete, After 3 years of water immersion 10 lbs/in. (1750N/m) 10 lbs/in. (1750N/m) ASTM D 903 (After 3 years of water immersion) Peel adhesion to concrete, after immersed in TCE, PCE, BTEX and Acid & Alkaline solution Retain >80%Retain >80%ASTM D 543/ASTM D 903 Lap peel adhesion 10 lbs/in. (1750N/m) 10 lbs/in. (1750N/m) ASTM D1876 Lap peel adhesion to concrete, after immersed in TCE, PCE, BTEX and Acid & Alkaline solution Retain >80%Retain >80%ASTM D 543/ASTM D 1876 Shear strength of joint >100 lb >60 lb ASTM D882 VOC permeance of BTEX and saturated TCE & PCE Not Detectable (Membrane, Seam)Not Detectable (Membrane, Seam)ASTM F 739 (Open loop) Methane permeance <40 ml/day.m .atm 74.5 ml/day.m .atm ASTM D 1434 Methane permeance (before and after soil burial) <40 ml/day.m .atm ASTM D 4068/ASTM D 1434 Radon diffusion coefficient (membrane and seam), m /s 3.7 X 10 Membrane, Seam 5.3 X 10 Membrane, Seam Method C of ISO/TS11665-1 Permeance to water vapor transmission <0.01 perms (0.6 ng/(Pa x s x m ))<0.01 perms (0.6 ng/(Pa x s x m ))ASTM E96, method B Diffusion Coefficient Test Method PREPRUFE 300R Plus PREPRUFE 300R Plus LT PREPRUFE 160R Plus PREPRUFE 160R Plus LT TCE Calculated <1.5x10 m /s <1.1x10 m /s PCE Calculated <1.3x10 m /s <9.0x10 m /s Benzene Calculated 2.3x10 m /s 3.1x10 m /s Toluene Calculated <2.3x10 m /s 6.3x10 m /s 4 5 6 7 2 2 2 2 -12 -12 2 2 ® ® ® ® -12 2 -12 2 -11 2 -12 2 -15 2 -15 2 -16 2 -15 2 Product Data Sheets Page 7 of 8 Ethylbenzene Calculated <2.3x10 m /s <1.6x10 m /s Xylene Calculated 5.2x10 m /s 1.8x10 m /s -16 2 -16 2 -15 2 -15 2 Footnotes:Footnotes: 1. Lateral water migration resistance is tested by casting concrete against membrane with a hole and subjecting the membrane to hydrostatic head pressure with water. The test measures the resistance of lateral water migration between the concrete and the membrane. 2. Hydrostatic head tests of PREPRUFE Membranes are performed by casting concrete against the membrane with a lap. ® 3. Test is performed by casting concrete against the membrane with detail prepared per GCP standard details. 4. Sample immersed under TCE, PCE, BTEX and acid & alkaline solution 5. The test is conducted 15 minutes after the lap is formed. 6. Sample immersed under TCE, PCE, BTEX and acid & alkaline solution 7. PREPRUFE 300R Plus/LT meets LARR requirement® gcpat.com | North America Customer Service: 1-866-333-3726gcpat.com | North America Customer Service: 1-866-333-3726 We hope the information here will be helpful. 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Last Updated: 2025-01-14 gcpat.com/solutions/products/preprufe-comprehensive-waterproofing-system/preprufe-300r160r-plus-preprufegcpat.com/solutions/products/preprufe-comprehensive-waterproofing-system/preprufe-300r160r-plus-preprufe Product Data Sheets Page 8 of 8 NATIONAL INSPECTION SERVICES _______________________________________________________________________________________________________________________________ Attachment 3 – HVAC Specifications FDFD FD FD FD A 2 3 B 4 5 10 11 12 D C 13 14 15 DFCU-1 SUPPLY DISTRIBUTION DFCU-1 ERV-1 FRESH AIR SUPPLY DUCTED TO DFUC-1 RETURN FOR SPACE DISTRIBUTION (575 CFM FRESH AIR) ERV-1 EXHAUST DUCTING PULLING AIR FROM SPACE. (575 CFM EXHAUST) DFCU-1 RETURN 12"x10" 12"x10" STORAGE BASEMENT - FLAG NOTES: 1 419 Canyon Avenue, Suite 200 Fort Collins, CO 80521 ph: 970.224.1191 www.vfla.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. INTEGRATED MECHANICAL, LLC THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF IM. CHECKED BY: DRAWN BY: COPYRIGHT: Issued No.Description Date 1 Revisions 2 3 4 5 6 No.Description Date VAUGHT FRYE LARSON architects 3/ 1 0 / 2 0 2 5 1 0 : 4 0 : 5 3 A M 3/10/2025 10:40:53 AM Au t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n ta i n A v e / R - 2 4 - 0 31 - 3 0 0 - M T N - M 0 0 1 - R2 4 . r v t H2.0 HVAC PLAN - BASEMENT LEVEL 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT IM-24-031 KML JKM SCHEMATIC DESIGN DESIGN DEVELOPMENT 12-13-2024 08-30-2024 0" 1" 2" 1/8" = 1'-0"HVAC PLAN - BASEMENT LEVEL THE BASEMENT OF 300 MOUNTAIN WILL FEATURE A DEDICATED 2-TON HEAT PUMP FAN COIL UNIT, AND A 575 CFM RATED ENERGY RECOVERY VENTILATOR SERVING AS THE FRESH AIR SYSTEM. THE FAN COIL SYSTEM WILL BE COMPLETELY LOCAL TO THE BASEMENT ENVIRONMENT AND NOT SUPPLY OR RETURN AIRFLOW FROM OTHER LEVELS IN THE BUILDING. THE ERV WILL EXHAUST 575 CFM AND SUPPLY AN EQUAL 575 CFM AS TO MAINTAIN NEUTRAL PRESSURE IN THE BASEMENT SPACE. THIS WILL ENSURE THE SPACE WILL NOT PUSH AIR INTO OTHER PARTS OF THE BUILDING, NOR DRAW AIR IN FROM OTHER PARTS OF THE BUILDING OR BELOW THE SLAB. THE ERV IS SIZED PER THE 2021 IMC TO PROVIDE 0.12 CFM/SQFT OF FRESH VENTILATION AIR PER THE “STORAGE ROOM’TYPE OCCUPANCY. THE ERV WILL HAVE THE CAPABILITY OF RUNNING 24/7. THIS VENTILATION RATE WILL COMPLETELY CHANGE OVER THE VOLUME OF AIR IN THE BASEMENT WITH OUTSIDE AIR APPROXIMATELY EVERY 90 MINUTES. 300 MOUNTAIN - BASEMENT VENTILATION DESIGN PLANS NOTE: THE FULL BUILDING DESIGN IS CURRENTLY IN ENGINEERING AT THIS TIME. THE FULL DESIGN IS NOT YET COMPLETED AND IT TARGETED FOR A SUBMITTAL IN APRIL OR MAY OF 2025. THESE PLANS ARE PROVIDED TO INDICATE THE DESIGN INTENT OF VENTILATING THE BASEMENT ONLY. NOTE-1 FLAG NOTES: X A 2 3 B 4 5 10 11 12 D C 13 14 15 34"x14" A 3 B 4 5 11 12 C 13 DFCU-1 CEILING MOUNTED CASSETTE UNIT VAV-2-3 VAV-2-4 36"x12" 28"x12" EXPOSED CORE AND SHELL FINISH FOR ALL VAV EQUIPMENT ON THIS LEVEL CHASE LOCATION. FINAL LOCATION TBD DOWN FROM PACK-1 DOWN FROM PACK -2 34"x14" 10"ø 50"x20"54"x20" 32 " x 1 2 " 24 " x 1 4 " 10"ø 10"ø 18"x10" 1 8 " x 1 0 " VAV-2-5 10 " ø RA MAIN OPEN-ENDED FOR FUTURE RETURN AIR PLENUM T 2-3 T 2-4 T 2-5 DOWN FROM ERV-1 DOWN TO BASEMENT 12"x10" 12"x10" 419 Canyon Avenue, Suite 200 Fort Collins, CO 80521 ph: 970.224.1191 www.vfla.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. INTEGRATED MECHANICAL, LLC THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF IM. CHECKED BY: DRAWN BY: COPYRIGHT: Issued No.Description Date 1 Revisions 2 3 4 5 6 No.Description Date VAUGHT FRYE LARSON architects 3/ 1 0 / 2 0 2 5 1 0 : 4 1 : 1 7 A M 3/10/2025 10:41:17 AM Au t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n ta i n A v e / R - 2 4 - 0 31 - 3 0 0 - M T N - M 0 0 1 - R2 4 . r v t H2.2 HVAC PLANS - SECOND LEVEL 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT IM-24-031 KML JKM SCHEMATIC DESIGN DESIGN DEVELOPMENT 12-13-2024 08-30-2024 0" 1" 2" 1/8" = 1'-0"HVAC PLAN - SECOND LEVEL0" 1" 2" 1/4" = 1'-0" HVAC PLAN - SECOND LEVEL - ENLARGED PLAN A 2 3 B 4 5 10 11 12 D C 13 14 15 PACK-1 PACK-2 DHP-1 GENETRATOR BY OTHERS EF-1 10"ø ERV-1 575 CFM SUPPLY 575 CFM EXHAUST VERTICAL SUPPLY AND RETURN DUCTING 10'-0" EXHAUST RADIUS NEAREST MECHANICAL AIR INTAKE NOTE-1 FLAG NOTES: X 419 Canyon Avenue, Suite 200 Fort Collins, CO 80521 ph: 970.224.1191 www.vfla.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. INTEGRATED MECHANICAL, LLC THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF IM. CHECKED BY: DRAWN BY: COPYRIGHT: Issued No.Description Date 1 Revisions 2 3 4 5 6 No.Description Date VAUGHT FRYE LARSON architects 3/ 1 0 / 2 0 2 5 1 0 : 4 1 : 2 4 A M 3/10/2025 10:41:24 AM Au t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n ta i n A v e / R - 2 4 - 0 31 - 3 0 0 - M T N - M 0 0 1 - R2 4 . r v t H2.3 HVAC PLAN -ROOF LEVEL 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT IM-24-031 KML JKM SCHEMATIC DESIGN DESIGN DEVELOPMENT 12-13-2024 08-30-2024 0" 1" 2" 1/8" = 1'-0"HVAC PLAN - ROOF LEVEL 419 Canyon Avenue, Suite 200 Fort Collins, CO 80521 ph: 970.224.1191 www.vfla.com DRAWING NUMBER: PROJECT NUMBER: SEAL: IN ASSOCIATION WITH: Strength in design. Strength in partnership. Strength in community. INTEGRATED MECHANICAL, LLC THIS DRAWING MAY NOT BE PHOTOGRAPHED, SCANNED, TRACED OR COPIED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF IM. CHECKED BY: DRAWN BY: COPYRIGHT: Issued No.Description Date 1 Revisions 2 3 4 5 6 No.Description Date VAUGHT FRYE LARSON architects 3/ 1 0 / 2 0 2 5 1 0 : 4 1 : 3 1 A M 3/10/2025 10:41:31 AM Au t o d e s k D o c s : / / 3 0 0 & 3 1 4 E M o u n ta i n A v e / R - 2 4 - 0 31 - 3 0 0 - M T N - M 0 0 1 - R2 4 . r v t H8.4 ERV-1 SCHEDULE 300 EAST MOUNTAIN AVENUE 300-314 E. MOUNTAIN AVE FORT COLLINS, COLORADO 80524 DESIGN DEVELOPMENT IM-24-031 Approver Author SCHEMATIC DESIGN DESIGN DEVELOPMENT 12-13-2024 08-30-2024 ENERGY RECOVERY VENTILATOR SCHEDULE: ERV-1