Remove: "4 pCi/L". Add: "0.148 Bq/L [4 pCi/L]"

Projects located in areas where annual average ambient PM2.5 levels are 35 µg/m³ or higher may utilize one of the following alternative strategies to satisfy Part 2.
- Replace the PM2.5 level in part 2b with 25 µg/m³. Projects using this option are limited in WELL Certification level to Gold, no matter how many optimizations are achieved.
- Replace the PM2.5 level in part 2b and the PM10 level in part 2c with a level equal to 30% of the 24- or 48-hr average of ambient outdoor levels on the day(s) of Performance Verification. Projects using this option are limited in WELL Certification level to Silver, no matter how many optimizations are achieved.

For Part 1a, remove: "inside the building". Add: "inside the project"

UK Building Regulations Part F has been accepted as an equivalent for ASHRAE 62.2-2013 of Feature 03, Part 4a for supply air ventilation requirements in the United Kingdom. Please note that the extraction rates for kitchen and toilet exhaust must still meet the ASHRAE 62.2-2013 requirements.

A thermal comfort survey has not been accepted as an equivalent for the requirements of Feature 03 Part 3. Note that the intent of Feature 03 is to ensure adequate ventilation and high indoor air quality. Additionally, the reference standard for this feature is ASHRAE 62.1-2013: Ventilation for Acceptable Indoor Air Quality, not ASHRAE 55-2013.

Singapore SS 553:2016 CP Standard has not been accepted as an equivalent for ASHRAE 62.1-2013 of Feature 03. SS 553 Table 1 does not address all applicable and expected space types within an office occupancy. Note also that all Equivalencies are precedent-setting meaning that review of potential equivalent standards or codes cannot be conducted on a project-specific basis. Equivalency proposals must address the variety of project and space types present in the original code or standard. Further, in some cases, the ventilation rates listed in SS 553 Table 1 appear to be less than the default ventilation rates listed in ASHRAE 62.1-2013 Table 6.2.2.1 for the same occupancy types.
Please note that it is acceptable for the project team to bring on another individual with experience using ASHRAE standards to verify design compliance and sign the LOA (e.g. as a peer review), if they wish and/or the engineer of record is unable to do so.

Under "Air Feature 3 Ventilation effectiveness, Part 3", remove: "Testing and Balancing Report". Add: "MEP or Contractor" under "Letters of Assurance"

For Part 2b, add: "(measured at 1.2-1.8 m [4-6 ft] above the floor)" after "below 800 ppm" and add: "maximum" after "at"

In Part 3a, change "After substantial completion and prior to occupancy, the HVAC system undergoes testing and balancing" to "After substantial completion and prior to occupancy, the HVAC system has (within the last 5 years), or is scheduled to, undergo testing and balancing."

AS 1668.2 may be used in lieu of ASHRAE 62.1 for Feature 3, Part 1: Ventilation Design. Note that all projects that wish to comply with AS 1668.2 must assume a minimum density of 16 m² per person.

At the end of Part 1b, add "Quality Standards feature in the WELL Building Standard for at least 95% of all hours in the previous year."

Singapore SS 553 (2016) CP Standard has not been accepted as an equivalent for ASHRAE 62.1-2013 of Feature 03. Note the building/occupancy types indicated in the Outdoor Air Supply Requirements (Table 1) is not sufficient to cover all buildings and space types for all projects in Singapore.

For Part 4a, remove: "(Ventilation Rate Procedure or IAQ Procedure) for residential buildings of 3 or fewer floors". Add: "(or more recent version) for dwelling units"

Remove: "c. Projects comply with all requirements set in the Natural Ventilation Procedure…the previous year."

Natureplus has been accepted as an alternative for the requirements of CDPH Standard Method v1.1-2010 (or later) Feature 04 Part 1, 2, 3 and 4. Note that projects must adhere to the minimum formaldehyde requirement specified in the CDPH Standard Method v1.1-2010 (or later) for VOC emissions.

The Good Environmental Choice Australia (GECA) Paints and Coatings PCv2.2iii-2012 has been accepted as an alternative for the requirements of Feature 04 Part 1.

Headspace GC/MS has not been accepted as an equivalent for the requirements of Feature 04 Part 4. The Headspace method does not test for all VOCs that are limited by CDPH v1.1 2010. Note that the Headspace GC/MS method does test for individual VOCs but does not test for as many VOCs as required by CDPH v1.1 2010, including formaldehyde.

The level© certification has been accepted as an alternative to the ANSI/BIFMA e3-2011 Furniture Sustainability Standard sections 7.6.1 and 7.6.2, tested in accordance with ANSI/BIFMA Standard Method M7.1-2011, requirements of Feature 04. Note that section 7.6 Low Emitting Furniture credits (7.6.1 and 7.6.2) from level© certification must be achieved.

NEN-EN-ISO 17895 has been accepted as an alternative for the requirements of Feature 04 Parts 1 and 2. Note that while NEN-EN-ISO 17895 is acceptable for determining VOC content, the products must adhere to the VOC limits set forth in CARB 2007, Suggested Control Measures (SCM) for Architectural Coatings, or South Coast Air Quality Management District (SCAQMD) Rule 1113 and Rule 1168.

The Good Environmental Choice Australia (GECA) Floor Coverings issued July 2017 has been accepted as an alternative for the requirements of Feature 04, Part 3.

TÜV Rheinland LGA testing standard 2011 has been accepted as an alternative for the requirements of Feature 04, Part 5. Note that this equivalency may only be used for workstation cabinetry for projects in Europe.

RAL-GZ-430 has not been accepted as an equivalent for the ANSI/BIFMA e3-2011 Furniture Sustainability Standard sections 7.6.1 and 7.6.2, of Feature 04, Part 5.
Note that RAL-GZ-430 does not identify a comparable requirement for TVOC and 4-Phenylcyclohexene emissions for workstations and seating. Additionally, for cupboard furniture and upholstered furniture, the formaldehyde emissions threshold indicated in RAL-GZ-430 is significantly higher than that mandated by CDPH.

Blue Angel (Blauer Engel) is approved as an acceptable equivalent to the requirements of Feature 04, Part 5. However, please note that projects must still adhere to the formaldehyde requirements specified in ANSI/BIFMA e3-2011 Furniture Sustainability Standard.

EU Ecolabel for wooden floor coverings (2010 version) has been accepted as an alternative for the requirements of CDPH Standard Method v1.1-2010 (or later) of Feature 04 Part 3 for Europe.

European Union Paints Directive 2004/42/EC has been accepted as an alternative for the requirements of Feature 04, Part 1 for Europe. Please note that the European Union Paints Directive 2004/42/EC is the compliant performance standard for paints and varnishes listed within BREEAM UK New Construction: Hea 02 Indoor Air Quality.

In part description, add: "interior" after "newly installed"

In part description, remove: "inside the waterproofing membrane". Add: "interior" after "newly installed"

In part description, add: "interior" after "newly purchased"

US EPA Method 24 has been accepted as an alternative to the requirements of Feature 04 VOC Reduction, Part 2. Please note that the products must have VOC content below the allowable limits established in SCAQMD as outlined in Part 2a. This equivalency may be used only in India.

M1 (ISO 16000) is approved as an acceptable equivalent to the requirements of Feature 4 VOC Reduction Part 1, 2, 3, 4 and 5.

CRI Green Label Plus is approved as an acceptable equivalent to the requirements specified in the CDPH Standard Method v1.1-2010 (or later) for Feature 4 Part 2 and 3.

AgBB is approved as an acceptable equivalent to the requirements of Feature 4 VOC Reduction Part 1, 2, 3, 4 and 5. Note, projects must adhere to the minimum formaldehyde requirement specified in the CDPH Standard Method v1.1-2010 (or later) for VOC emissions.

The REACH standard has not been accepted as an equivalent to the CDPH Standard Method v1.1-2010 (or later) guidelines for Feature 04 Part 5. Note that the VOC limit thresholds specified in CDPH Standard Method v1.1-2010 (or later) guidelines must be met. The VOC limit thresholds for Substances of Very High Concern (SVHC) listed in REACH are not acceptable.

EN 13964:2014 emission testing method has been accepted as an alternative for the requirements of Feature 4, Part 4 for suspended ceilings. Ceilings with heating or cooling properties and walls must meet limits set by the California Department of Public Health Standard Method v1.1-2010 (or later). Formaldehyde emission should be measured in accordance with EN 717-1:2004.

Global GreenTag has been approved as an acceptable equivalent to the requirements for Feature 04 Part 1, 2, 3, 4 and 5.

IS 101.2.2.1986 and IS 101.2.1.1988 are acceptable equivalent testing method standards in order to measure in accordance with the VOC content threshold limits specified in SCAQMD Rule 1168 for Part 2a.

MAS Certified Green® has been accepted for Feature 04 Parts 1, 2, 3, 4, 5.
The MAS Certified Green® program integrates testing requirements of California Department of Public Health (CDPH) Standard Method V1.1, the BIFMAM7.1 Test Method and Formaldehyde emission testing requirements of the Cal EPA – ARB with chemical emission limits referenced by the USGBC LEED, CHPS and CARB organizations. The MAS Certified Green® program is ISO/TEC 17025 and 17065 compliant and recognized by LEED, CDPH, BIFMA and CHPS.

MAS Certified Green® is also accepted for LEED v4 EQ Credit Low-Emitting Materials Third Party Certifications and Labels. It meets CDPH for emissions, CARB or SCAQMD for VOC content (wet-applied), and ANSI/BIFMA for furniture.

VOC ETL class 2 and 3, VOC+ ETL Environmental and Formaldehyde-Free, has been accepted for Feature 04 Part 5.
2nd class: VOC+ certificate states conformance to ANSI/ BIFMA e3 standard credits 7.6.1, 7.6.2 and / or credit 7.6.3 which includes California Department of Public Health (CDPH) Standard Method v1.1 01350 (2010).
3rd class: Formaldehyde-Free program includes compliance to the second class listed above, VOC+ ETL Environmental, and compliance to formaldehyde requirements for ultra-low-emitting formaldehyde (ULEF) and no added formaldehyde resins.

eco-INSTITUT-Label (2015 version) has been deemed acceptable for Feature 04 Part 1 - 4 with the following requirement:
The formaldehyde limit of 9 µg/m³ at 28 days must be met for products using this label.

Remove: "July 1, 2005 for VOC content". Add: "Volatile organic compound (VOC) limits correspond to an effective date of July 1, 2005 and rule amendment date of January 7, 2005."

Previously published as an AAP:
The following referenced standards may be used in lieu of ANSI/BIFMA e3-2011 Furniture Sustainability Standard Section 7.6.1 and 7.6.2, testing in accordance with ANSI/BIFMA Standard Method M7.1-2011:
- the Finnish M1 label for non-upholstered furniture
- the Blue Angel label for upholstered furniture
If these standards are used, the furniture must also be separately tested for 4-phenylcyclohexane and total aldehydes and held to the same limits specified in ANSI/BIFMA e3-2011 section 7.6.1 and 7.6.2

Previously published as an AAP:
Products and materials that have an A or A+ class rating under the French legislation on VOC emissions meet the requirements of Parts 1, 2, 3, and 4.

Updated:
LEED v4 EQc Low-emitting materials credit is deemed equivalent for Part 1. Please note that the project must adhere to the ""Additional VOC content requirements for wet-applied products"" section (found in LEED v4). Additionally, all newly applied paints and coatings must be in compliance.
BREEAM UK NC/RFO 2014, INC. 2016 and IRFO 2015 Hea 02: Indoor air quality - Volatile organic compound (VOC) emission levels (products) credit is deemed equivalent for Part 1. Please note the project must adhere to the Volatile organic compound (VOC) emission levels for products (found in Table 18 in the BREEAM UK New Construction 2014, Table 20 in the UK RFO 2014, Table 17 and 18 in the INC 2016). Additionally, all newly applied paints and coatings must be in compliance.

LEED v4 EQc Low-emitting materials credit is deemed equivalent for Part 2. Please note that the project must adhere to the ""Additional VOC content requirements for wet-applied products"" section (found in LEED v4). Additionally, all newly applied adhesives and sealants must be in compliance.
BREEAM UK NC/RFO 2014, INC 2016 and IRFO 2015 Hea 02: Indoor air quality - Volatile organic compound (VOC) emission levels (products)credit is deemed equivalent for Part 2. Please note the project must adhere to the Volatile organic compound (VOC) emission levels for products (found in Table 18 in the BREEAM UK New Construction 2014, Table 20 in the UK RFO 2014, Table 17 and 18 in the INC 2016). Additionally, all newly applied adhesives and sealants must be in compliance.

LEED v4 EQc Low-emitting materials credit is deemed equivalent for Part 3. Please note that the project must adhere to the ""General emissions evaluation"" section (found in LEED v4). Additionally, all newly installed flooring must be in compliance.
BREEAM UK NC/RFO 2014, INC 2016 and IRFO 2015 Hea 02: Indoor air quality - Volatile organic compound (VOC) emission levels (products) credit is deemed equivalent for Part 3. Please note the project must adhere to the Volatile organic compound (VOC) emission levels for products (found in Table 18 in the BREEAM UK New Construction 2014, Table 20 in the UK RFO 2014, Table 17 and 18 in the INC 2016). Additionally, all newly installed flooring must be in compliance.

LEED v4 EQc Low-emitting materials credit is deemed equivalent for Part 4. Please note that the project must adhere to the ""General emissions evaluation"" section (found in LEED v4). Additionally, all newly installed insulation must be in compliance.

LEED v4 EQc Low-emitting material credit is deemed equivalent for Part 5. Please note that the project must adhere to the ""Furniture evaluation"" section (found in LEED v4). Additionally, 95% (by cost) of all newly purchased furniture and furnishing must be in compliance.

Note BREEAM equivalency is only applicable for Feature 4 Parts 1-3.

Indoor Advantage Gold has been approved as an acceptable alternative for F04, Parts 1, 2, 4, and 5.

For Feature 4, Part 5, as an alternative to the formaldehyde emissions thresholds cited in ANSI/BIFMA e3-2011 7.6.2, projects may use certain approved thresholds. For systems furniture laminates: CDPH Standard Method v1.1-2010 limits (9 ug/m3) may be used. For furniture substrates: CARB Phase II limits (50 ppb for hardwood plywood with veneer core, 50 ppb for hardwood plywood with composite core, 90 ppb for particleboard, 110 ppb for medium density fiberboard, and 113 ppb for thin medium density fiberboard) may be used. Additionally, note that the project will still be required to demonstrate Feature 01: Air Quality Standards.

AFRDI Green Tick Furniture is compliant with Feature 4, Part 5.
It should be noted that GECA's allowable emission levels exceed those required in the ANSI/BIFMA e3-2011 Furniture Sustainability Standard, and GECA does not address the VOC emission concentration thresholds required by the ANSI/BIFMA e3-2011 Furniture Sustainability Standard. However, GECA is currently deemed a best in class within its market at this time.

Floorscore has been approved as an equivalent standard F04, Parts 2 and 3.

Change “The VOC content of all newly installed thermal and acoustic insulation in ceilings and walls…” to “The VOC content of all newly installed thermal and acoustic insulation inside the waterproofing membrane…”

Add Owner Letter of Assurance as required documentation.