Add Contractor Letters of Assurance as required documentation.

Remove: "Rack space and fan capacity is in place for future carbon filters or combination particle/carbon filters." Add: "Rack space is available and rack location identified for future implementation of carbon filters or combination particle/carbon filters."

Class F 7 (or higher) media filters are an acceptable equivalent to MERV 13 (or higher) media filters.

In a project with a split-system air conditioning unit that does not allow for accommodating MERV 13 filters, the following measures may be implemented as an alternative. For Parts 1 and 2a of this feature, a standalone air purifier with carbon filter and HEPA filter performing equivalent to MERV 17-20 may be used in accordance with manufacturer’s guidelines. Installation of the HEPA filters may not be conditional based on the criteria in Part 2b. A sufficient quantity of stand-alone air purifiers and carbon filters and HEPA filters must be provided in accordance with the manufacturers recommended area coverage. Provide a policy document to confirm Part 3 of this Feature, and a policy document that confirms that the project owner will maintain and replace the filters and filter units located within the project as per manufacturer specifications.

Add "or combination particle/carbon filters." to the end of Part 1a. Part 1a now reads "Rack space and fan capacity is in place for future carbon filters or combination particle/carbon filters."

Multifamily Residential projects may use wall-mounted HEPA filters to meet the requirements of Feature 5 Parts 1 and 2, provided the project contains a sufficient quantity of wall mounted HEPA filters in accordance with the manufacturer’s recommended area coverage. In addition, a policy document must be provided confirming Part 3 of the Feature and that the Owner will maintain the filters for the units that are located in both common and private areas.

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce mold and bacteria growth within buildings, particularly from water damage or condensation on cooling coils.'

Add: "occurring within one year prior to Performance Verification" after "building construction"

Add: "occurring within one year prior to Performance Verification" after "building construction"

In Part 3, change "To prevent building materials from absorbing and later releasing VOCs emitted by other (source) materials during construction, the following requirements are met: to "To prevent building materials from absorbing water or moisture during construction, the following requirements are met:"

Remove Parts 3b and 3c.

In 24 Oct, 2016 AAP, remove: "Where the options of an entry vestibule or revolving door are not possible for projects with regularly occupied lobbies, projects". Add: "Projects"

In 24 Oct, 2016 AAP, remove: ""Projects must also provide indoor pressure sensor readings from one day. This should include exhaust and supply sequences. Projects should also provide mechanical drawings of the project space and manufacturer documentation of the air curtain equipment"". Add: ""To document this alternative adherence path, the project team must provide the following in the Documentation Submission:

- Indoor pressure sensor readings in accordance with ANSI/ AMCA 220 including exhaust and supply sequences from a single day
- Mechanical drawings of the project space and manufacturer documentation of the air curtain equipment""

For Part 1a, add: "(sum of indoor and outdoor length)" after "primary direction of travel"

For Part 1c, add: "(sum of indoor and outdoor length)" after "primary direction of travel"

For projects that have an entryway walk off system that is less than 10 feet in length, but no smaller than 9’6’’, temporary rollout mats may be used during potential inclement weather (i.e. a 30% chance or higher) to bring the walk-off system up to 10 feet in length. In addition, projects must commit to cleaning the entrance/lobby multiple times daily, and demonstrate this through a cleaning plan. Provide the cleaning plan as well as a narrative detailing the project policy regarding rollout mats and inclement weather.

Projects may create a healthy space by installing stand-alone air filters in the breathing zone near the primary seating of occupants, and near the entrance. A narrative must be included with documentation to describe the contaminants that will be filtered out along with an operations schedule for the maintenance of the air filters.

The requirements of Part 2 (Entryway Seal) may be met by controlling building pressure according to the following requirements:

- An indoor pressure sensor must be installed in the building lobby and near any other entrance to the building from the outside. The pressure sensor must be capable of providing automatic readings on a frequency of at least one per hour.
- The project team must specify the targeted building pressurization levels for these locations for when the building is in both cooling mode and heating mode. The pressure levels must keep outside air from entering the building (more than standard practice), allow occupants to open and close doors easily, and must not cause undue condensation or other moisture problems due to exfiltration through the building envelope.

To document this alternative path, the project team must provide the following in the documentation application submission:
- A narrative describing the targeted building pressurization levels for both cooling mode and heating mode.
- A narrative (and other supporting documentation as necessary) demonstrating that the pressure levels keep outside air from entering the building (more than standard practice), allow occupants to open and close doors easily, and do not cause undue condensation or other moisture problems due to exfiltration through the building envelope.
- Indoor pressure readings demonstrating one day of pressure sensor readings from a cooling period, and one day of pressure sensor readings from a heating period. The exhaust and supply sequences must be provided to demonstrate that the desired pressure readings will be achieved.

Where securing products that meet Hazard Statement requirements set in Table A4 is problematic, the project can submit documentation demonstrating an attempt has been made, including a petition or formal request filed with at minimum three manufacturers/labels (per product category). The project is then permitted instead to use products that meet Type 1 eco-labeling program, as defined by ISO 14024:H929:1999 and developed by a member of the Global Ecolabelling Network.

The Global GreenTag Standard v4.0 and PhD Methodology are not accepted as alternatives for the requirements of Feature 09 Part 1 because the requirements of GreenTag do not match those of these WELL features.

Vikings by Rotulo Ecologico ABNT is not approved as an acceptable alternative to the requirements of Feature 09 Part 1. Equivalencies are a comparison of different codes and regulations and are appropriate for projects that wish to propose an equivalent standard, code, or practice to meet the feature intent.

Remove: "A cleaning plan is created which includes following requirements". Add: "A cleaning plan is created that includes"

Remove: "b. A list of approved product seals with which all cleaning products must comply (See Table A4 in Appendix C)". Add: "b. A list of approved product seals with which all cleaning, disinfection and hand hygiene products must comply in accordance with the Cleaning, Disinfection and Hand Hygiene Product section in Table A4 in Appendix C."

Remove: "d. A cleaning schedule that specifies the extent and frequency that a surface is cleaned, sanitized, or disinfected in accordance with the Disinfection and Sanitization and Entryway Maintenance sections of Table A4 in Appendix C". Add: "d. A cleaning schedule that specifies the extent and frequency of cleaning, including the Entryway Maintenance section of Table A4 in Appendix C"

Projects registered as New and Existing Interiors that can demonstrate that aspects of the base building operation is outside of their control are not required to achieve Feature 09, Part 1: Cleaning Plan for Occupied Spaces.

The Good Environmental Choice of Australia (GECA) Standard CPv2.2i-2012 (Cleaning Products) has been deemed accepted as an alternative for the requirements of Feature 09 Part 1.

The A.I.S.E. Charter for Sustainable Cleaning has been accepted as an alternative for Requirement (d) of Feature 9 Part 1.
Note that Multifamily Residential Pilot projects are required to meet GS-49 for residential cleaning services rather than GS-42.

Change Part 1b text to: 'A cleaning schedule that specifies the extent and frequency that a surface is cleaned, sanitized or disinfected in accordance with the Disinfection and Sanitization and Entryway Maintenance sections of Table A4 in Appendix C.'

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

For Part 1b, add “and entryway walk off mats (if applicable)” after “each high-touch and low-touch surface” in the first sentence.

The European Regulations 1107/2009/EC and 528/2012/EU have been accepted as alternatives for the requirements of Feature 10 Part 1b.

For Part 1b, remove: "hazard-ranked". Add: "with a Hazard Tier ranking of 3 (least hazardous)" after "Use of pesticides"

Biopesticides registered with the Central Insecticides Board and Registration Committee (CIBRC) of India have been accepted as an alternative for the requirements of Feature 10 Part 1b.

Remove: "The following conditions are met for all pesticides and herbicides used on outdoor plants". Add: "Pesticide and herbicide use on outdoor plants is eliminated, or hazards are minimized through one of the following:"

Remove: "Only pesticides with a hazard tier ranking of 3 (least hazardous) as per the City of San Francisco Department of the Environment's (SFE) Hazard Tier Review Process are used. Refer to Table A2 in Appendix C for more details". Add: "Use of hazard-ranked pesticides based on screening lists described in Table A2 in Appendix C."

Under Part 1b, remove "Reduced Risk Pesticide List" and replace with "Hazard Tier Review Process"

In Part 1 description, change “The following conditions are met for all pesticides and herbicides used on plants:” to “The following conditions are met for all pesticides and herbicides user on outdoor plants.”

To reduce hazards in projects constructed prior to any applicable laws banning or restricting asbestos, the following testing, evaluation and abatement protocols (as applicable) are is conducted for prior and during repair, renovation, demolition, or painting.

The standard GBZ/T 192.5 – 2007 National Occupational Health Standards - Method for Determination of Dust in the Air in the Workplace Part 5: Asbestos Fiber Concentration has been accepted as an equivalent for 40 CFR Part 763 of Feature 11 Part 3 for projects in China. Note that the scope this of this equivalency is limited to requirement (c) of this feature part (post-abatement clearance testing).

Hong Kong Laboratory Accreditation Scheme (HOKLAS) certified inspectors have been accepted as an alternative for the EPA certified inspector requirements of Feature 11 Part 2 and 4 for Hong Kong.

In 29 May, 2018 AAP, remove: "the US Consumer Product Safety Commission". Add: "an agency focused on protecting the public from risk or injury associated with consumer products,”

In Core & Shell Scope, remove: "Entire Building". Add: "Extent of Developer Buildout"

All newly installed building materials meet the following materials composition requirements:

1. No asbestos >1% by weight in the following:
   • Thermal system insulation (applied to pipes, fittings, boilers, breeching, tanks, ducts or other like components to prevent heat loss or gain).
   • Surfacing material (that is sprayed, troweled or otherwise applied to surfaces, for example acoustical plaster or fireproofing materials).
   • Wallboard/millboard, resilient floor covering, roofing and siding shingles (including metal cladding) and construction mastics.
2. For furnishings, at minimum 20% by cost of the following building product and material types contain < 100 ppm added lead:
   • Doors and door hardware.
   • Ductwork.
   • Conduits. 
   • Metal studs.
   • Mirrors/glass.
   • Brass cooler drains, pumps, motors and vales.
   • Roofing or flashing.
   • Vinyl blinds or wall covering.
   • Other (Product categories can be suggested for inclusion in the cost calculation, provided evidence/documentation for added lead content is presented.)

Wherever procurement of a product or a material type is not possible, the project is permitted to submit documentation demonstrating an attempt has been made, including a petition or formal request filed with at minimum three manufacturers (per product or material type) who were unable to meet their needs.

Products certified under Good Environmental Choice Australia (GECA) FFFMv3.0-2017, Furniture, Fittings, Foam and Mattresses (Level A) are considered to meet the lead and asbestos restrictions of Feature 11 Part 1.

Products certified under Good Environmental Choice Australia Floor Coverings (GECA 25-2011 v2i) are considered to meet the toxic material reduction restrictions of Feature 11 Part 1.

AFRDI Standard 150 has been accepted as an alternative for the requirements of Feature 11, Part 1.

ProPECC2/97, when used in combination with the Hong Kong EPD’s Code of Practice on Asbestos Control protocol and a post clearance test, has been accepted as an alternative to the requirements of Feature 11 Part 3.