Updated:
Projects may exceed 500 µg/m³ in total VOCs (part 1c), so long as the following individual component VOCs do not exceed the limits listed in CDPH/EHLB/Standard Method V1.1, Table 4.1 (one half the Chronic Reference Exposure Levels (CREL) issued by Office of Environmental Health Hazard Assessment):

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

Where projects are restricted from implementing a demand-controlled ventilation system or are unable to retrofit the existing ventilation system to be demand-controlled, the requirements of Feature 03 Part 2 may be met through the following conditions for outdoor air supply rate, whichever is more stringent:
1. Exceed the ventilation rates set in ASHRAE 62.1-2013 (Ventilation Rate Procedure or IAQ Procedure) by 40%. Note that if this feature part applies to more than 50% of the total floor area at the project site, projects are not eligible to receive points for Feature 15 Part 1a.
2. Provide a ventilation supply rate of 12 L/s (25 CFM) per person or higher.

ASHRAE Standard 62.1-2007 has not been accepted as an equivalent for the requirements of Feature 03 Part 1 and 3. Note that the ventilation requirements for all space types are not equivalent between ASHRAE Standard 62.1 versions 2007 and 2013. Therefore, these reference standards cannot be considered equivalent for all projects.

CIBSE Guide A has been accepted as an alternative for the requirements in ASHRAE 62.1 2013 for Feature 3 Part 1

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"

EN 13779, section A. 15. 2, Table A.10 may be used to comply with Feature 03, Part 2. Note, projects must adhere to Indoor Air Category IDA 1 or 2.

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.

Under Part 2, after “For all spaces” insert the following: “46.5 m² [500 ft²] or larger”

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 IS:13745-1993 testing method has not been accepted as an alternative for the requirements of CDPH Standard Method v1.1-2010 (or later) of Feature 04 Part 5 for projects in India. E1 class (EN 13986:2004) is an accepted alternative for the requirements of Feature 04 Part 5 for furniture substrates, although only for products aligned with protocols accepted under EN 13986:2004 for Europe.

Formaldehyde E1 class has been accepted as an alternative to the requirements of Feature 04, Part 5 for furniture substrates. Note that this is only acceptable for projects in Europe.
Also note that the Formaldehyde E1 class is the Option 1 performance requirement for wood panels listed within BREEAM UK New Construction: Hea 02 Indoor Air Quality. Please refer to the previously approved EP on 07 April 2017 (http://standard.wellcertified.com/air/voc-reduction?page=3&view=equivalency) for additional information on Hea 02 Indoor Air Quality.

CertiPUR has been accepted as an alternative for the requirements of Feature 04, Part 5. Note this only applies to projects in Europe, specific to polyurthane foam used in bedding and upholstered furniture. This Equivalency does not cover any other furniture or furnishing components except for the polyurethane foam. All other non-foam components of installed furniture must be separately tested and held to the limits specified in ANSI/BIFMA e3-2011 section 7.6.1 and 7.6.2, or other relevant, equivalent standard.

CertiPUR/EUROPUR has been accepted as an alternative to the requirements of Feature 04, Part 5, specific to polyurethane foam used in bedding and upholstered furniture. This Equivalency does not cover any other furniture and furnishing components except for the polyurethane foam.

EU Ecolabel for Paints and Varnishes (2014) has been accepted as an alternative for the requirements of CDPH Standard Method v1.1-2010 (or later) of Feature 04 Part 1 for Europe.

Formaldehyde E1 class has been accepted as an alternative for the requirements of CDPH Standard Method v1.1-2010 (or later) Feature 04 Part 3 for Europe.

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.

Conformance to the ANSI/BIFMA e3 standard by an accredited third-party product certification body is an acceptable alternative for the requirements for Feature 4, Part 5.

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.

GUT has been accepted for Feature 04 Part 3.

The GUT standard was created by the European carpet industry, and aims ""to improve continuously all environmental and consumer protection aspects throughout the life cycle of a textile floor covering (from production to installation, to use phase and recycling"".

This standard is only applicable to Part 3, and thresholds are as follows:

Termination criteria 3 days after loading:
TVOC: 250 µg/m³
Formaldehyde: 9 µg/m³

Desired values 28 days after loading:
TVOC: 100 µg/m³
Formaldehyde: 4 µg/m³

Exemplary level emission criteria for BREEAM International New Construction 2016 scheme has been accepted as an equivalent standard to the California Department of Public Health (CDPH) Standard method v1.1-2010 (or later) as specified in Part 4a of this feature. The thresholds are as follows:
Formaldehyde limit of 9 µg/m³
TVOC limits of ≤ 0.3 mg/m³
The insulation materials may be tested using one of the following methodologies:
ISO 16000-9
CEN/TS 16516
CDPH Standard Method v1.1

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.

CalGreen 2013 Title 24, Part 11, California Green Building code has been approved as an equivalent for F04, Parts 1 and 2. For Part 3, projects are required to meet 100% of the resilient flooring requirements according to CalGreen 2013 Title 24 in order to fully comply with WELL requirements.

ORIGINAL RULING (10/24/2016):
(Not approved)
GreenGuard Certification is not an accepted equivalent standard to the California Department of Public Health (CDPH) Standard method v1.1-2010 as specified in Part 4a of this feature. Therefore Greenstuf is not an acceptable material for newly installed thermal or acoustic insulation, based on the evidence provided. The excerpt taken from GreenGuard Standard Method for Measuring and Evaluating Chemical Emissions from Building Materials, Finishes and Furnishings Using Dynamic Environmental Chambers refers to the GreenGuard Children and School certification (now GreenGuard Gold Certification), which does in fact meet/exceed CDPH standards. However, according to the Material Safety Data Sheet provided, Greenstuf is GreenGuard Certified and is not GreenGuard Gold Certified.

UPDATED RULING (1/11/2017):
(Approved)
Greenstuf has been considered an acceptable material, as it complies with GreenGuard Gold Certification, which has been approved as an equivalent standard for Feature 04, Part 4.

In Parts 3, 4 and 5 of this Feature, change 'VOC content' to 'VOC emissions'

Green Star Credit 13: Indoor Pollutants is considered partially equivalent to WELL Feature 04: VOC reduction.
Compliance with the Green Star credit is sufficient to comply with Parts 1 and 2, as well as to a portion of Part 3 (only flooring that is classified as carpeting) of the WELL feature.
Projects will still need to comply with Part 3 (all non-carpet flooring), as well as with Parts 4 and 5 in order to fully comply with the Feature.

Field and Laboratory Emission Cell (FLEC) emissions testing is approved as an emissions testing methodology ONLY for furniture and furnishings that are made up of a uniform material and have flat testing surfaces on which the FLEC emissions testing methodology may be applied. For example, flat surfaced cabinetry that is made up of a uniform material may be tested using this methodology. However, chairs that are made from a variety of materials that lack flat surfaces may not be tested using this methodology. The emissions test must be administered by a third party investigator with no affiliation with the project. The associated costs are the responsibility of the project team.

Additional tests performed in accordance with ISO 16000 methodology must be performed for total aldehydes and 4-Phenylcyclohexane and must meet the thresholds specified in the WELL Building Standard.

Under Part 1c, delete "VOC control" and replace with "VOC content".

Under Part 2c, delete "VOC control" and replace with "VOC content".