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."

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."

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

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 "during construction"

Add: "newly installed" after "all"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To minimize the introduction of construction-related pollutants into indoor air and protect building products from degradation.'

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: ""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.

Where the options of an entry vestibule or revolving door are not possible for projects with regularly occupied lobbies, 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.

In areas where building vestibules and revolving entrance doors are not common architectural elements, 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: "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.

Remove: "a. A list of high-touch and low-touch surfaces in the space (See Table A1 in Appendix C)". Add: "a. The Cleaning Equipment and Training section of Table A4 in Appendix C"

Remove: "c. A cleaning protocol and dated cleaning logs that are maintained and available to all occupants". Add: "c. A list of high-touch surfaces and schedule of sanitization or disinfection as specified in the Disinfection and Sanitization section in Table A4 in Appendix C"

GECA and SCS have been approved as acceptable alternatives for F09, Part 1, Requirement d.

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.

In 17 Jan, 2017 EP, remove: "UK Regulations Directive 2009/128/EC has". Add: "UK Plant Protection Products (Sustainable Use) Regulations 2012 have"

Malmö Stads Riktlinjer för Kemisk Bekämpning (2015) (The City of Malmoe’s Guidelines for Pesticide Use, 2015) of Sweden has been accepted as an equivalent to the San Francisco Environment Code Integrated Pest Management (IPM) program of Feature 10 Part 1.

In system diagram, add: "Urinary" to diagram and to list under diagram of body system

Remove: "Pestcide and herbicide use is minimized by creating a use plan based on Chapter 3 of the San Francisco Environment Code Integrated Pest Management (IPM) program". Add: "The creation of a pest management plan in place of pesticide/herbicide use, based on Chapter 3 of the San Francisco Environment Code Integrated Pest Management (IPM) program"

The UK Plant Protection Products (Sustainable Use) Regulations 2012 have been approved for F10, Part 1, Requirement a. Adopting organic farming principles described in Council Regulation (EC) No 834/2007 of 28 June 2007 has been approved as an acceptable method to comply with F10 Part 1, Requirement b.
Note that:
1. Any envisaged exemptions adopted from the SF IPM program has to be listed.
2. The public has to be notified of any pesticides use under exempt conditions
3. Annual update of the IPM plan
4. Display the IPM plan in the building communal area and/or on website
5. Engage organic gardening professional for design of landscaping, and if infestation occurs
6. Ensure that ongoing use of IPM is part of any FM contract that manages the landscaping

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce the presence of pests in buildings and minimizing occupant exposure to harmful chemicals.'

Projects may meet Feature 11 Part 1 by complying with requirements for maximum concentration values for toxic chemicals tolerated by weight in homogenous materials as required by European Union’s Restriction of the Use of Certain Hazardous Substances (RoHS).

EPA Ireland - Management Plan for Polychlorinated Biphenyls (PCBs) in Ireland has been accepted as an alternative for the requirements of Feature 11, Part 4 for projects in Ireland.

Products certified under Global GreenTag Standard v4.0 and PhD Methodology are considered to meet the asbestos and mercury restrictions of Feature 11 Part 1c and 5b.

Asbestos Content and Advocacy
All newly-installed building materials do not contain asbestos >1% by weight in the below materials. Wherever procurement of a product or a material 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 3 manufacturers (per product or material) who were unable to meet their needs.

1. Thermal insulation (applied to pipes, fittings, boilers, breeching, tanks, or ducts)
2. Acoustical plaster
3. Fireproofing materials on structural members
4. Wallboard/millboard
5. Floor tile and sheeting
6. Roofing and siding shingles (including metal cladding)
7. Construction mastics

Lead Content
All newly-installed building materials meet the following material composition requirements:

1. No more than a weighted average of 0.25% lead in wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures, and 0.20% for solder or flux used in plumbing for water intended for human consumption.
2. No interior or exterior paints containing lead.
3. Use of lead-free roofing and flashing.

Lead Advocacy
For each product type listed below (as applicable) projects submit documentation demonstrating a petition or a formal request is filed with at least three manufacturers to limit lead content to <100ppm.

1. Door hardware
2. Ductwork
3. Conduit
4. Metal studs
5. Mirrors
6. Brass cooler drains, pumps, motors, valves
7. Vinyl blinds or wallcovering

Lead Disclosure
Project teams file a petition with an agency focused on protecting the public from risk or injury associated with consumer products, requesting a product label is developed for building products to verify lead content is below 100ppm.

Directive 2009/95/EC of the European Parliament and of the Council of 27 January 2003 has been accepted as an alternative for the requirements of Feature 11, Parts 5a and 5b, for Europe. Note that high-pressure sodium lamps must still meet the LEED v4 requirements.

OSHA 29 CFR 1926.62 has not been deemed equivalent to EPA 40 CFR Part 745.227 for the requirements of Feature 11, Part 2. Note while the acceptable work practices are similar between the two standards, OSHA 29 CFR 1926.62 does not establish determinations for all lead-related hazards to an occupant beyond the potential exposure of a construction employee.

Complex electrical or data products that are made up entirely of small electrical components, such as fire alarms, meters, sensors, thermostats and load break switches, may meet the European Union’s Restriction of the Use of Certain Hazardous Substances (RoHS) Directive in lieu of the 100 ppm limit on added lead in Feature 11 Part 1c. RoHS establishes the following maximum concentration values for chemicals by weight in homogeneous materials:
1. Lead (Pb): < 1000 ppm
2. Mercury (Hg): < 100 ppm
3. Cadmium (Cd): < 100 ppm
4. Hexavalent Chromium (Cr VI): < 1000 ppm
5. Polybrominated Biphenyls (PBB): < 1000 ppm
6. Polybrominated Diphenyl Ethers (PBDE): < 1000 ppm
7. Bis(2-Ethylhexyl) phthalate (DEHP): < 1000 ppm
8. Benzyl butyl phthalate (BBP): < 1000 ppm
9. Dibutyl phthalate (DBP): < 1000 ppm
10. Disobutyl phthalate (DIBP): < 1000 ppm

In part description, remove: "on buildings". Add: "of projects"

For Part 5b, remove: "Project develops a plan to upgrade current mercury-containing lamp". Add: _“Project does not install any lamps not compliant with the low-mercury limits specified in Appendix C, Table A5. Project develops a plan to upgrade any existing non-compliant lamps to low-mercury or mercury-free lamps.”

In part description, remove: "following guidelines". Add: "below guidelines, and a policy is put in place for future work"

Add: "and Policy Document" after "Remediation Report"

In feature background, remove: "(Please refer to Table A3 for additional details.)"

The Dutch Working Conditions Legislation (including the Decree, Act, and Regulation) has been approved as an alternative to AHERA for Feature 11, Part 3. Note that projects must maintain a copy of the records produced by the asbestos investigator/abatement contractor, which should be made available to the building occupants.