NEN-EN 13829 has been accepted as an equivalent for ASHRAE Guideline 0-2005 and the NIBS Guideline 3-2012 of Feature 14 Part 1 and 2.

In 26 Jul, 2017 Equivalency, remove: "Thernal". Add: "Thermal"

Previously published as AAP:
The ISO 9972-2015 - Thermal performance of buildings - Determination of air permeability of buildings - Fan Pressurization method is an acceptable alternative to meet WELL Feature 14 Part 1a.

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To minimize air quality and thermal comfort issues resulting from the infiltration of untreated air through the building envelope.'

CIBSE Guide A is not accepted as an alternative to the requirements of Feature 15 Part 1. Note that the ventilation rates specified are generally not 30% above those required in ASHRAE 62.1-2013.

CEN Standards EN 15251:2007 and EN 13779:2007 may be used in lieu of ASHRAE 62.1-2013 for Feature 15, Part 1. ​​​​

The project must meet Category I ​or II​ (described in Table 1)​ and must calculate the ventilation rate based on ​either of the below calculation methods​,​ referenced in EN 15251: 2007​, ​section B.1.3​ ""Method based on ventilation rate per person or per m² floor area​:"" ​
​1​) the addition of the ​occupant and building ​values ​(see section B.1.2)
2​) the highest value (maximum of the calculated value based on per person and the value based on per m² floor area from Table B.3)

​Additionally, the requirements of CEN Standard EN 15251-2007 must be met and the performance requirements of CEN Standard EN 13779:2007 related to ventilation and room conditioning systems must be met (excluding section 7.3, Thermal Environment; section 7.6, Acoustic Environment; section A.16; and section A.17).

Remove: "Exceed ASHRAE outdoor air supply rates met in the WELL Ventilation Effectiveness feature by 30%". Add: "Exceed outdoor air supply rates met in Feature 03, Part 1a by 30%".

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To expel internally-generated pollutants through an increased supply of outdoor air.'

In Part 1, change "The following is required in terms of the rate of fresh air supply to all regularly occupied spaces:" to "The following is required in terms of the rate of outdoor air supply to all regularly occupied spaces:"

In part description, remove: "locker rooms". Add: "changing rooms"

Projects situated in countries where local or regional standards do not pose strict requirements for relative humidity control (e.g. EN-15251) cannot earn points by not complying with the requirements of Feature 16, Part 1. Projects without dehumidification or humidification systems may earn points through Part 1b.

Eco Mark No. 155 has been accepted as an equivalent to the low-emission criteria for printers and copiers for Feature 17, Part 1. Note that this equivalency may only be used for projects in Japan.

Eco Mark No. 155 has been accepted as an equivalent to Blue Label RAL UZ 171 for Feature 17 Part 1. Note that this equivalency may only be used for projects in Japan.

Under Part 1, change the beginning of the first line to 'All cleaning and chemical storage units, all bathrooms and all rooms that contain printers and copiers…"

Add annotated mechanical and architectural drawing as required documentation, remove MEP Letter of Assurance, remove on-site spot checks.

For Part 2a, remove: "the Air Quality Standards feature". Add: "Part 1: Indoor Air Monitoring"

Add: "(measured at 1.2-1.8 m [4-6 ft] above the floor)" after "once an hour"

The requirements of Part 3 (Environmental Measures Display) may be met by hosting the required data on a website accessible to occupants and in locations where the physical display would be located, placing signage indicating the website where the data may be accessed.

Add on-site spot checks as required verification.

For Feature 19, Part 1, a dedicated outdoor terrace can be provided. The terrace must satisfy the following requirements:
a. Must be directly accessible from the tenant space
b. Must be able to accommodate a minimum of 15% of the total regular project occupants
c. Must be adequately shaded to allow occupants to perform their work without significant glare
d. Feature 19, Part 2 and Part 3 must be addressed

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To increase the supply of high quality outdoor air and promote a connection to the outdoor environment by encouraging occupants to open windows when outdoor air quality is acceptable.'

Add Architect Letter of Assurance as required documentation, remove annotated architectural drawing.

Add Owner Letter of Assurance as required documentation, remove Architect Letter of Assurance.

For Part 1, remove: "Dedicated outdoor air systems are used for heating and/or cooling systems". Add: "Dedicated outdoor air systems are used for ventilation"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To allow buildings to control the outdoor air supply independently from the heating/cooling needs of the building.'

REHVA Guidebook No. 1 (Displacement Ventilation in non-industrial premises) may be used in lieu of the System Performance Evaluation and ASHRAE Guidelines RP-949 for Feature 21, Part 1.

Replace “One of the following is met for projects implementing a displacement ventilation system for heading and/or cooling:” with “Projects implement a displacement ventilation system for heating and/or cooling in which one of the following is met:”

When desk bins are used to comply with Feature 22, Part 1, Requirement b, waste must be emptied at least once per day. Bins must be lined with appropriate liners (e.g. biodegradable liners for the compost bin) that will sufficiently retain all waste and waste residue. Bins must be wiped to remove waste residue when present or at least weekly.

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce the presence of pests in buildings and minimize occupant exposure to pest-related allergens.'

Change Part 1 verification type from Visual Inspection to Operations Schedule and Spot Check.

For Part 1a, add: "or combination particulate/carbon filters" after "Activated carbon filters"

China's GB 6932-2015 Domestic gas instantaneous water heater, Class 5 has been approved for Feature 24 Part 2. It should be noted that the testing protocols in China GB 6932-2015 for humidity and oxygen percentage differ from the requirements in California's South Coast Air Quality Management District rule 1121. However, GB 6932-2015 Domestic gas instantaneous water heater, Class 5 is currently deemed best in class within China.

The emission standards of Central Pollution Control Board (Government of India) has been accepted as an alternative for California’s South Coast Air Quality Management District rules for pollution in Feature 24 Part 2. However, combustion equipment for which there are no CPCB emission standards must meet California’s South Coast Air Quality Management District rules for pollution.
The following are acceptable alternatives to the requirements of Feature 24 Part 4

• Emission standards as per Bharat Stage III for Feature 24 Part 4 a
• Emission standards as per Bharat Stage III or IV for Feature 24 Part 4 b

The following European local emission standards have been approved as an acceptable equivalent for Feature 24, Part 4:
1. European Stage IV standard for non-road diesel engine vehicles or the use of non-road diesel engine vehicles equipped with diesel particulate filters (DPF).
2. Euro VI emission standards for on-road engine vehicles or the use of on-road diesel engine vehicles equipped with diesel particulate filters (DPF).

The following China local standards have been approved as an acceptable alternative for F24, Part 4:
1. China local standard GB20891-2014 for non-road diesel engine vehicles
2. China local standard GB17691-2005 for passenger vehicles and heavy duty trucks
Note that that NOx limits in the China standards are higher then US EPA limits.

Add Owner Letter of Assurance as required documentation, remove Architect Letter of Assurance.

Products certified under the Good Environmental Choice Australia (GECA) Furniture & Fittings (Level B) (FF v3.0-2017) standard are considered to meet the toxic material reduction restrictions of Feature 25 Part 1, 2 and 5. Note, however, that any products certified under Good Environmental Choice Australia (GECA) Furniture & Fittings (Level B) (FF v3.0-2017) standard have not been accepted as alternatives for the requirements of Feature 25 Part 3, Phthalate (Plasticizers) Limitation. Feature 25 Part 3 requires the limitation of DEHP, DBP, BBP, DINP, DIDP and DNOP phthalates, while GECA requires the ban of only DEHP, DBP, DAP and BBP phthalates. Since GECA does not account for the limitation of DINP, DIDP and DNOP, products certified under this GECA standard cannot be deemed as in compliance with Feature 25 Part 3.

Products certified under the Good Environmental Choice Australia (GECA) Furniture, Fittings, Foam and Mattresses (Level A) (FFF&M v3.0-2017) standard are considered to meet the toxic material reduction restrictions of Feature 25 Part 1, 2, 3 and 5.

Products certified under Good Environmental Choice Australia (GECA) Furniture, Fittings, Foam and Mattresses (Level A) (FFF&M v3.0-2017) standard, are considered to meet the toxic material reduction restrictions of Feature 25, Parts 1, 2, 3, and 5.

Remove: "(Please refer to Table A3 for additional details.)"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To minimize the impact of hazardous building material chemicals on indoor air quality and protect the health of manufacturing and maintenance workers.'

Add Contractor Letters of Assurance as required documentation.

The Good Environmental Choice Australia (GECA) Furniture & Fittings, Foam & Mattresses (Level A) (FFF&M v3.0-2017) standard has not been accepted as an alternative for the requirements of Feature 26 Part 1. Note that while most LBC Red List substances are prohibited in the GECA Furniture Level A standard, the GECA Furniture Level A standard allows products that contain formaldehyde-based additives subject to a certain air emissions limit, whereas the Red List prohibits the use of added formaldehyde (Section 4.1 Criterion 13).

The Good Environmental Choice Australia (GECA) Furniture & Fittings, Foam & Mattresses (Level A) (FFF&M v3.0-2017) standard has not been accepted as an alternative to the requirements of Feature 26, Part 1. Note that while most LBC Red List substances are prohibited in the GECA Furniture Level A standard, the Red List prohibits the use of added formaldehyde, but the GECA Furniture Level A standard allows products that contain formaldehyde-based additives, subject to a certain air emissions limit (Section 4.1 Criterion 13). Added formaldehyde was listed in the comparison table provided, but no narrative or note has been provided to address this difference. Additionally, many substances included in the LBC Red List were compared to the GECA Criterion 17, which prohibits any Halogenated organic substances (CFCs, HCFCs, Chloroprene, CPVC, HFRs, PVC, PVDC), but confirmation that specific halogenated organic substances have been covered has not been provided in all cases.

Remove: “products by cost (including furnishings, built-in furniture, all interior finishes and finish materials”. Add: “all furnishings, built-in furniture, interior finishes, and finish materials (calculated by cost)"

Remove: "At least one of the following requirements is met". Add: "At least 25% of products by cost (including furnishings, built-in furniture, all interior finishes and finish materials) meet one or more of the following requirements"

Remove: "At least 25% of products by cost (including furnishings, built-in furniture, all interior finishes and finish materials) are Cradle to Cradle™ Material Health Certified with a V2 Gold or Platinum or V3 Bronze, Silver, Gold or Platinum Material Health Score". Add: "Have a Cradle to Cradle™ Material Health Certified with a V2 Gold or Platinum or V3 Bronze, Silver, Gold or Platinum Material Health Score."

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To minimize the impact of hazardous building material ingredients on indoor air quality and protect the health of manufacturing and maintenance workers.'

In part title, remove: "Locker Room". Add: "Changing Room". In part description, remove: "locker rooms". Add: "changing rooms"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce occupant exposure to both harmful pathogens and hazardous cleaning agents.'

In part title, remove: "Locker Rooms". Add: "Changing Rooms". In part description, remove: "locker rooms". Add: "changing rooms"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce occupant exposure to pathogens on high-touch surfaces.'

Add Contractor Letters of Assurance as required documentation.

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce occupant exposure to both harmful pathogens and hazardous chemicals through the use of high quality cleaning equipment and the proper storage of cleaning agents.'