LEED NC Indoor Environmental Quality INTENT Slide Editor

LEED NC Indoor Environmental Quality INTENT Slide Editor: James A. Strapko LEED Source: www. intheleed. com

Indoor Environmental Quality 8 Credits; 15 Points EQPR 1: Minimum Indoor Air Quality EQPR 2: Environmental Tobacco Smoke (ETS) control EQc 1: Outdoor Air Delivery Monitoring EQc 2: Increase Ventilation EQc 3. 1: Construction IAQ Management, During Construction EQc 3. 2: Construction IAQ Management, Before Occupancy EQc 4. 1: Low-Emitting Materials, Adhesives & Sealants EQc 4. 2: Low-Emitting Materials, Paints & Coatings EQc 4. 3: Low-Emitting Materials, Carpet Systems EQc 4. 4: Low-Emitting Materials, Composite Wood & Agrifiber

Indoor Environmental Quality 8 Credits; 15 Points EQc 5: Indoor Chemical Pollutant Source Control EQc 6. 1: Controllability of Systems, Lighting EQc 6. 2: Controllability of Systems, Thermal Comfort EQc 7. 1: Thermal Comfort, Design EQc 7. 2: Thermal Comfort, Verification EQc 8. 1: Daylighting & Views, Daylight 75% of Spaces EQc 8. 2: Daylighting & Views, Daylight 90% of Spaces

EQ Prerequisite 1 Minimum Indoor Air Quality (IAQ) Performance

EQP 1: EQ Prerequisite 1 Minimum Indoor Air Quality (IAQ) Performance 1 st of 2 prerequisites in Indoor Environmental Air Quality (EQ for short) Intent: • to establish minimum IAQ performance to enhance indoor air quality in buildings • contribute to the well-being of the occupants Implementation: • Meet minimum requirement of Sections 4 thru 7 of ASHRAE 62. 1 -2004: Ventilation for Acceptable Indoor Air Quality Mechanical Ventilation Systems: • designed using Ventilation Rate procedure OR applicable local code (whichever is more stringent) Naturallly Ventilated buildings: comply with ASHRAE 62. 1 -2004. Code: • ASHRAE 62. 1 -2004: Ventilation for Acceptable Indoor Air Quality, Sections 4 thru 7 • Submittal Phase: • design

EQ Prerequisite 2 Environmental Tobacco Smoke (ETS) Control

EQP 2: EQ Prerequisite 2 Environmental Tobacco Smoke (ETS) Control Intent: Minimize exposure of building occupants, indoor surfaces, and ventilation systems to ETS (Environmental Tobacco Smoke). Implementation: • Option 1: Prohibit Smoking – no smoking except outdoors at least 25′-0” from: • entries • outside air intakes • operable windows • Option 2: Designated Areas – no smoking except in designated area and outdoor (same rules as previous for outdoor) – Designated smoke rooms to: • effectively capture, contain and remove ETS from building • be directly exhausted to outdoors • enclosed with deck to deck partitions • operate at negative pressure to adjacent spaces • Option 3 (residential only): No smoking in common areas. – no smoking in all building common areas – wall, ceiling and floor penetrations are to be sealed off – doors are to be weather stripped – be tested for performance (ASTM E 779 -03)

EQP 2: EQ Prerequisite 2 Environmental Tobacco Smoke (ETS) Control Code: • ANSI/ASTM E 779 -03, Standard Test Method for Determining Air Leakage Rate by Fan Pressurization • Residential Manual for Compliance with California’s 2001 Energy Efficiency Standards (For Low-Rise Residential Buildings), Chapter 4 Submittal Phase: • design

EQ Credit 1 Outdoor Air Delivery Monitoring

EQ Credit 1: 1 Point Outdoor Air Delivery Monitoring Intent: Provide capacity for ventilation system monitoring to sustain occupant comfort and wellbeing. Implementation: Install Permanent monitoring systems that provide feedback on ventilation system performance – systems to generate ALARM when conditions vary by 10% set point – Mechanically vented spaces: • Densely Monitored Space: > 25 people/1000 SF – monitor CO 2 levels » Monitor location to be 3′ to 6′ above floor finish • for non-densely occupied spaces – provide direct outdoor airflow measure device. – detect when system is 15% below design rate – Naturally Ventilated Space: • Monitor CO 2 – Monitor location to be 3′ to 6′ above floor finish – CO 2 and airflow measures by: • pilot tubes, venturi meters, rotating vane anemometers • feed into HVAC and BAS systems Code: none Submittal Phase: design

EQ Credit 2 Increase Ventilation

EQ Credit 2: 1 Point Increase Ventilation Intent: • Provide additional outdoor air ventilation to improve IAQ for improved occupant comfort, well-being of occupants and productivity. Implementation: • Mechanically Vented Spaces: – increase breathing zone outdoor air ventilation rates to 30% above minimum ASHRAE 62. 1 -2004 rates • Naturally Vented Spaces: – design system to meet Carbon Trust Good Practice Guide 237 (1998). – make sure ventilation is effective by flow diagram in Figure 1. 18 of CIBSE Application Manual 10: 2005 – use diagrammatic calculations to show design meets CIBSE or. . • use macroscopic, multi-zone, analytic mode to predict room-by-room airflows naturally ventilate 90% of occupied spaces per ASHRAE 62. 1 -2004 Codes: • ASHRAE 62. 1 -2004: Ventilation for Acceptable IAQ • Carbon Trust Good Practice Guide 237 (1998): Natural ventilation in non-domestic buildings • CIBSE Application Manual 10 (2005): Natural ventilation in non-domestic buildings Submittal Phase: design

EQ Credit 3. 1 Construction IAQ Management Plan - During Construction

EQ Credit 3. 1: 1 Point Construction IAQ Management Plan - During Construction Intent: • Reduce IAQ problems associated with Construction/Renovation process • Help to sustain comfort and well-being of construction workers and building occupants Implementation: • Develop and implement an Indoor Air Quality (IAQ) Management Plan for during construction – during construction, meet or exceed SMACNA IAQ Guidelines for Occupied Buildings Under Construction, Ch 3 (2007) – Protect on-site or installed absorptive materials from moisture damage • insulation, carpeting, ceiling tile and drywall – AHU’s, during construction, must have filters with Minimum Efficiency Reporting Value (MERV) of 8 per ASHRAE 52. 2 -1999. • Control pollutant sources – spec materials with low VOC’s – control exhaust fumes • Interrupt Contamination Pathways – depressurize work areas – provide temporary barriers

EQ Credit 3. 1: 1 Point Construction IAQ Management Plan - During Construction Implementation, continued: • Interrupt Contamination Pathways – depressurize work areas – provide temporary barriers • Housekeeping activities – protect porous surfaces – dust control • Schedule the installation of materials to avoid contamination • Member of General Contractor’s Team to be IAQ manager. Codes: • SMACNA IAQ Guidelines for Occupied Buildings Under Construction, Ch. 3 (2007) • ASHRAE 52. 2 -1999: Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size Submittal Phase: • construction

EQ Credit 3. 2 Construction IAQ Management Plan - Before Occupancy

EQ Credit 3. 2: 1 Point Construction IAQ Management Plan - Before Occupancy Intent: • Reduce IAQ problems associated with Construction/Renovation process • Help to sustain comfort and well-being of construction workers and building occupants Implementation: • Develop and implement an Indoor Air Quality (IAQ) Management Plan for pre-occupancy phase Option 1: FLUSH-OUT • after construction but before occupancy • 14, 000 cubic feet of O/A (outside air) per sf of floor area • maintain 60 degrees • < 60% relative humidity • OR • if occupancy occur prior to flush out • delivery of 3500 cubic feet of O/A (outside air) per sf of floor area • ventilate at. 30 cfm/sf. • minimum 3 hours per date until 14, 000 cf/sf of O/A is delivered • USE MERV 13 filters for HVAC

EQ Credit 3. 2: 1 Point Construction IAQ Management Plan - Before Occupancy Option 2: Air Quality Testing • conduct an IAQ baseline test after construction, prior to occupancy • use EPA Compendium of Methods for the Determination of Air Pollutants in Indoor Air. Code: • EPA Compendium of Methods for the Determination of Air Pollutants in Indoor Air Submittal Phase: • construction

EQ Credit 4. 1 Low Emitting Materials Adhesives & Sealants

EQ Credit 4. 1: 1 Point Low Emitting Materials - Adhesives & Sealants Intent: • Reduce the quantity of indoor air contaminants that are odorous, irritating, and or harmful to the comfort and well-being of installers and occupants. Implementation: • all ADHESIVES and SEALANTS used in interior of building (inside weather proofing system & applied on-site) is to comply with South Coast Air Quality Management District (SCAQMD) Rule #1168 and Green Seal (GS) Standard for Commercial Adhesives GS-36. • flooring adhesives, fire-stopping sealants, caulking, duct sealants, plumbing adhesives, cove base adhesives. Code: • South Coast Air Quality Management District (SCAQMD) Rule #1168, October 3, 2003 Amendment • Green Seal Standard 36 (GS-36), Oct, 2000 Submittal Phase: • construction

EQ Credit 4. 2 Low Emitting Materials - Paints & Coatings

EQ Credit 4. 2: 1 Point Low Emitting Materials - Paints & Coatings Intent: • Reduce the quantity of indoor air contaminants that are odorous, irritating, and or harmful to the comfort and well-being of installers and occupants. Implementation: • all PAINT and COATINGS used in interior of building to comply with following: – PAINTS : Green Seal (GS) 11 – Anti-Corrosive and Anti-Rust Paints : GS-03 – Clear Wood Finishes, Floor Coatings, Stains, Sealers, Shellacs: SCAQMD Rule 1113 Code: • Green Seal Standard GS-11 • Green Seal Standard GS-03 • SCAQMD: South Coast Air Quality Management District Rule 1113, Architectural Coatings Submittal Phase: • construction

EQ Credit 4. 3 Low Emitting Materials - Carpet Systems

EQ Credit 4. 3: 1 Point Low Emitting Materials – Carpet Systems Intent: • Reduce the quantity of indoor air contaminants that are odorous, irritating, and or harmful to the comfort and well-being of installers and occupants. Implementation: • All CARPET and CARPET CUSHIONS installed in building interior shall meet testing and product requirement of the Carpet and Rug Institute’s Green Label Plus Program. • All carpet adhesives shall meet EQ 4. 1. Code: • Carpet and Rug Institute Green Label Plus Testing Program. Submittal Phase: • construction

EQ Credit 4. 4 Low Emitting Materials - Composite Wood & Agrifiber

EQ Credit 4. 4: 1 Point Low Emitting Materials - Composite Wood & Agrifiber Intent: • Reduce the quantity of indoor air contaminants that are odorous, irritating, and or harmful to the comfort and well-being of installers and occupants. Implementation: • Composite wood and Agrifiber products (MDF, particleboard, plywood, wheatboard, strawboard, panel substrates, door cores) used in interior of building shall contain NO ADDED UREA FORMALDEHYDE RESINS. Code: • none Submittal Phase: • construction

EQ Credit 5 Indoor Chemical and Pollutant Source Control

EQ Credit 5: 1 Point Indoor Chemical and Pollutant Source Control Intent: • Minimize potentially hazardous particulates and chemical pollutants. Implementation: • Minimize and control pollutant entry • Minimize Cross contamination between occupied areas • Install permanent entryway systems at least 6′-0" long to capture dirt – grates – grills • Exhaust rooms where hazardous chemicals are stored – keep negative pressure at. 50 cfm/sf • If Mechanically Vented , installed filters should have MERV 13 rating or better Codes: • ASHRAE 52. 2 -1999: Method of Testing General Ventilation Air Cleaning Devices for Removal Efficiency by Particle Size Submittal Phase: • design

EQ Credit 6. 1 Controllability of Systems - Lighting

EQ Credit 6. 1: 1 Point Controllability of Systems - Lighting Intent: • Provide high levels of lighting system control by individual occupants or multi-occupant spaces for various tasks for occupant’s comfort and well-being. Implementation: • Individual lighting controls for 90% minimum of building occupants • Multi-occupant lighting system controls that meet group needs and preferences Code: • none Submittal Phase: • design

EQ Credit 6. 2 Controllability of Systems - Thermal Comfort

EQ Credit 6. 2: 1 Point Controllability of Systems – Thermal Comfort Intent: • Provide high level of thermal comfort system control for individuals and multi-occupant spaces to promote productivity, comfort and well being of building occupants. Implementation: • Individual comfort controls for 50% min. of building occupants. • Operable windows are OK instead if: – occupants are stationed within 20′-0″ inside and 10′-0″ to either side of the window opening. – meets standards of ASHRAE 62. 1 -2004 for natural ventilation • Also provide thermal comfort controls for multi-occupancy rooms, adjustable to suit needs of various groups to occupy the space. – thermal comfort conditions under ASHRAE 55 -2004 Codes: • ASHRAE 62. 1 -2004: Ventilation for Acceptable Indoor Air Quality • ASHRAE 55 -2004: Thermal Environmental Conditions for Human Occupancy Submittal Phase: • design

EQ Credit 7. 1 Thermal Comfort - Design

EQ Credit 7. 1: 1 Point Thermal Comfort - Design Intent: • Provide a comfortable thermal environment supporting productivity and well-being of building occupants. Implementation: • Design HVAC systems and Building Envelope per ASHRAE 55 -2004. • Evaluate air temp. radiant temp, air speed, relative humidity • Coordinate with EQ P 1. EQ 1, & EQ 2. Code: • ASHRAE 55 -2004: Thermal Comfort Conditions for Human Occupancy Submittal Phase: • design

EQ Credit 7. 2 Thermal Comfort - Verification

EQ Credit 7. 2: 1 Point Thermal Comfort - Verification Intent: • Assessment of building’s thermal comfort over time. Implementation: • Survey within 6 -18 months after occupancy – anonymous responses of overall satisfaction of thermal performance • If 20% or more of building occupants dissatisfied, develop a plan for corrective action – Plan should be in accordance with ASHRAE 55 -2004 Code: • ASHRAE 55 -2004: Thermal Comfort Conditions for Human Occupancy Submittal Phase: • design

EQ Credit 8. 1 Daylighting and Views - Daylight 75% of Spaces

EQ Credit 8. 1: 1 Point Daylighting and Views - Daylight 75% of Spaces Intent: • Provide connection between indoor and outdoor spaces through introduction of daylight and views into regularly occupied areas of the building. Implementation: • OPTION 1 - GLAZING FACTOR CALCULATION – achieve min. 2% glazing factor in minimum of 75% of regularly occupied areas. • OPTION 2 - DAYLIGHT SIMULATION MODEL – through computer simulation, demonstrate min. daylight illumination level of 25 footcandles in min. of 75% of regularly occupied areas. • OPTION 3 - DAYLIGHT MEASUREMENT – through records of indoor light measurements, demonstrate daylight illumination level of 25 footcandles in min. of 75% of regularly occupied areas. • ALL CASES – only area associated with room (actual square footage) can be applied toward the 75% total area calculation – provide daylight redirection and/or glare control devices

EQ Credit 8. 1: 1 Point Daylighting and Views - Daylight 75% of Spaces Code: • none Extra Credit: • Provide daylighting for 90% (instead of 75%) of occupied areas. Submittal Phase: • design

EQ Credit 8. 2 Daylighting and Views - Daylight 90% of Spaces

EQ Credit 8. 2: 1 Point Daylighting and Views - Daylight 90% of Spaces Intent: • Provide connection between indoor and outdoor spaces through introduction of daylight and views into regularly occupied areas of the building. Implementation: • Achieve direct line of site to outdoor for occupants in 90% of all regularly occupied areas – glazing between 2′-6″ & 7′-6″ – Plan View: • area within sight lines drawing from perimeter vision glazing – Section View: • direct line of sight can be drawn from area to perimeter vision glazing Code: • none Extra Credit: • case by case basis Submittal Phase: • design

LEED NC Indoor Environmental Air Quality INTENT Slide Editor: James A. Strapko LEED Source: www. intheleed. com