Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design through Construction Documents	Use ASHRAE 62.1-2004, Sections 4 to 7, or local code, whichever is more stringent, to determine ventilation requirements. See the v2.2 Reference Guide, page 289 for details. ASHRAE 62.1-2004 is generally standard practice, so often this credit does not require additional cost.	MEP Engineers
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	MEP Engineers with HGCI or LEED Consultant

The intent of meeting minimum indoor air quality performance standards is to ensure proper ventilation for all building occupants. The Harvard University Sustainability Principles encourage “maintaining environments that enhance human health, productivity, and safety for occupants of Harvard's buildings.”

This credit is equivalent with code, so there should be no added cost to achieve this credit.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Meet the minimum requirements of Sections 4 through 7 of ASHRAE 62.1-2004, Ventilation for Acceptable Indoor Air Quality. Mechanical ventilation systems shall be designed using the Ventilation Rate Procedure or the applicable local code, whichever is more stringent. Naturally ventilated buildings shall comply with ASHRAE 62.1-2004, paragraph 5.1."

- LEED for New Construction Version 2.2 Reference Guide, page 289

 

LEED-NC Version 2.1

"Meet the minimum requirements of voluntary consensus standard ASHRAE 62-1999, Ventilation for Acceptable Indoor Air Quality, and approved Addenda (see ASHRAE 62-2001, Appendix H, for a complete compilation of Addenda) using the Ventilation Rate Procedure."

- LEED-NC Version 2.1 Reference Guide, page 241

 

LEED-NC Version 2.2

• "Design narrative describing the project's ventilation design. Include specific information regarding fresh air intake volumes and any special conditions that affected the project's ventilation design.

AND

• For Mechanically Ventilated Buildings: confirmation that the project has been designed to meet the minimum requirements of ASHRAE Standard 62.1-2004, Ventilation for Acceptable Indoor Air Quality, using the Ventilation Rate Procedure.

OR

• For Naturally Ventilated Buildings: confirmation that the project has been designed to comply with the requirements for location and size of window openings per ASHRAE Standard 62.1-2004, Section 5.1."

- LEED for New Construction Version 2.2 Reference Guide, page 292

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the mechanical engineer or responsible party, declaring that the project is fully compliant with ASHRAE 62-1999 and all published Addenda and describing the procedure employed in the IAQ analysis (Ventilation Rate Procedure)."

- LEED-NC Version 2.1 Reference Guide, page 241

 

• "Please provide documentation of design criteria and assumptions.
• "Provide a design summary table including:
  • space names,
  • area (sq ft),
  • # of people per space,
  • cfm per person, and
  • total cfm.
• "If there are any extenuating circumstances like reduced occupancy times, allowing for reduced ventilation, provide a schedule, narrative and any other relevant documentation to express the circumstances."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

 

Wyss Hall (LEED-NC v2.1)

Blackstone (LEED-NC v2.1)

 

ASHRAE

EPA Indoor Air Quality

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Conceptual Design	Harvard has a no-smoking policy for common spaces. Cambridge law states that no person "shall smoke in any room to which the public is invited or in which the public is permitted" and that no person "shall smoke in any room under the control of a public or private employer which employees normally frequent during the course of employment."	Client Project Manager
Conceptual Design through Construction Documents	For graduate student housing, smoking in individual rooms is sometimes permitted. If prohibiting smoking in all areas inside the building is not an option, see page 295 of the v2.2 Reference Guide for potential options for locating rooms and ventilating spaces. See example Blower Door test procedures undertaken for One Western Avenue and BCG, both graduate student housing.	Architect and MEP Engineers
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online. See page 295 of the v.2.2 Reference Guide for submittal documentation requirements. See Model Submittals for EAp2 for Harvard examples.	HGCI or LEED Consultant

The university has a strict no-smoking policy. The Harvard University Statement of Sustainability Principles lays a foundation for promoting the health of the University community. The intent of this credit is to protect occupants from secondhand tobacco smoke.

There should be no added construction cost for this credit. With Harvard's no-smoking policy, this credit should be easy to achieve for non-residential buildings. For residential buildings in which smoking in individual rooms is possible, see One Western Avenue and 5 Cowperthwaite for Model Submittals.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"OPTION 1

• Prohibit smoking in the building.
• Locate any exterior designated smoking areas at least 25 feet away from entries, outdoor air intakes and operable windows.

OR

OPTION 2

• Prohibit smoking in the building except in designated smoking areas.
• Locate any exterior designated smoking areas at least 25 feet away from entries, outdoor air intakes and operable windows.
• Locate designated smoking rooms to effectively contain, capture and remove ETS from the building. At a minimum, the smoking room must be directly exhausted to the outdoors with no re-circulation of ETS-containing air to the non-smoking area of the building, and enclosed with impermeable deck-to-deck partitions. With the doors to the smoking room closed, operate exhaust sufficient to create a negative pressure with respect to the adjacent spaces of at least an average of 5 Pa (0.02 inches of water gauge) and with a minimum of 1 Pa (0.004 inches of water gauge).
• Performance of the smoking room differential air pressures shall be verified by conducting 15 minutes of measurement, with a minimum of one measurement every 10 seconds, of the differential pressure in the smoking room with respect to each adjacent area and in each adjacent vertical chase with the doors to the smoking room closed. The testing will be conducted with each space configured for worst case conditions of transport of air from the smoking rooms to adjacent spaces with the smoking rooms’ doors closed to the adjacent spaces.

OR

OPTION 3 (For residential buildings only)

• Prohibit smoking in all common areas of the building.
• Locate any exterior designated smoking areas at least 25 feet away from entries, outdoor air intakes and operable windows opening to common areas.
• Minimize uncontrolled pathways for ETS transfer between individual residential units by sealing penetrations in walls, ceilings and floors in the residential units, and by sealing vertical chases adjacent to the units.
• All doors in the residential units leading to common hallways shall be weather-stripped to minimize air leakage into the hallway.
• If the common hallways are pressurized with respect to the residential units then doors in the residential units leading to the common hallways need not be weather-stripped provided that the positive differential pressure is demonstrated as in Option 2 above, considering the residential unit as the smoking room. Acceptable sealing of residential units shall be demonstrated by a blower door test conducted in accordance with ANSI/ASTM-E779-03, Standard Test Method for Determining Air Leakage Rate By Fan Pressurization, AND use the progressive sampling methodology defined in Chapter 4 (Compliance Through Quality Construction) of the Residential Manual for Compliance with California’s 2001 Energy Efficiency Standards (www.energy.ca.gov/title24/residential_manual). Residential units must demonstrate less than 1.25 square inches leakage area per 100 square feet of enclosure area (i.e. sum of all wall, ceiling and floor areas)."

- LEED-NC Version 2.2 Reference Guide, pages 295-296

 

LEED-NC Version 2.1

"Zero exposure of non-smokers to ETS [Environmental Tobacco Smoke] by EITHER:

• prohibiting smoking in the building and locating any exterior designated smoking areas away from entries and operable windows;

OR

• providing a designated smoking room designed to effectively contain, capture and remove ETS from the building. At a minimum, the smoking room must be directly exhausted to the outdoors with no recirculation of ETS-containing air to the non-smoking area of the building, enclosed with impermeable deck-to-deck partitions and operated at a negative pressure compared with the surrounding spaces of at least 7 PA (0.03 inches of water gauge).
• Performance of the smoking rooms shall be verified by using tracer gas testing methods as described in the ASHRAE Standard 129-1997. Acceptable exposure in non-smoking areas is defined as less than 1% of the tracer gas concentration in the smoking room detectable in the adjoining non-smoking areas. Smoking room testing as described in ASHRAE Standard 129-1997 is required in the contract documents and critical smoking facility systems testing results must be included in the building commissioning plan and report or as a separate document."

- LEED-NC Version 2.1 Reference Guide, page 245

 

LEED-NC Version 2.2

• "Confirmation that the project has met the requirements for the appropriate project category: Non-Smoking Building; Building with Designated Smoking Rooms; or Residential Project
• For buildings with interior smoking rooms or for residential projects, provide appropriate copies of construction drawings to document the location of the smoking rooms, designed area separations, and dedicated ventilation systems.
• An option narrative may be provided to further describe the testing protocols/results and compliance methods implemented by the project."

- LEED-NC Version 2.2 Reference Guide, pages 297-298

 

LEED-NC Version 2.1

• "Provide the LEED Letter Template, signed by the building owner or responsible party, declaring that the building will be operated under a policy prohibiting smoking.

OR

• Provide the LEED Letter Template, signed by the mechanical engineer or responsible party, declaring and demonstrating that designated smoking rooms are exhausted to the outdoors with no recirculation of ETS-containing air to the nonsmoking area of the building, enclosed with impermeable deck-to-deck partitions, operated at a negative pressure compared with the surrounding spaces of at least 7 PA (0.03 inches of water gauge), and performance has been verified using the method described in the credit requirements."

- LEED-NC Version 2.1 Reference Guide, page 245

"Please provide documentation (architectural and mechanical drawings and test data) that confirms the declarations of the signed LEED Letter Template."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Blackstone (LEED-NC v2.1)

 

ASTM

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design through Construction Documents	See page 301 of the v.2.2 Reference Guide for carbon dioxide monitoring requirements.	MEP Engineers
Design Development	Identify loan fund and rebate opportunities. See Technologies & Products: HVAC - Controls for previous systems used at Harvard, and how the HGCI Loan Fund has facilitated the implementation.	HGCI and Client Project Manager
Construction Documents	Document EQc1 per LEED submittal requirements (page 301 of Reference Guide). See EQc1 Model Submittals for Harvard examples.	MEP Engineers
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	HGCI or LEED Consultant

Monitoring carbon dioxide in a given space is a strategy to optimize the energy used for ventilation to provide the optimal air flow for human health, given the materials and activities in a room, and to minimize ventilation when occupants are not in a space in order to not waste energy ventilating rooms when they are not in use. Harvard University is committed to developing and maintaining an environment that enhances human health and fosters a transition toward sustainability through the Sustainability Principles. This design element addresses three of the principles as a way to promote human health, conserve energy and measure energy consumption: "Demonstrating institutional practices ...including measures to increase efficiency ... in Harvard’s own operations", "Promoting health, productivity and safety of the university community through design and maintenance of the built environment", and "Establishing indicators for sustainability that will enable monitoring reporting and continuous improvement."

According to the Davis Langdon study, adding sensors and modifications to control systems for outside air delivery makes a very small contribution to the overall cost of the air conditioning systems (Matthiessen, Fay and Morris, 20). For full cite, see Financial Links. In addition, running ventilation only when necessary will reduce energy costs.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Install permanent monitoring systems that provide feedback on ventilation system performance to ensure that ventilation systems maintain design minimum ventilation requirements. Configure all monitoring equipment to generate an alarm when the conditions vary by 10% or more from setpoint, via either a building automation system alarm to the building operator or via a visual or audible alert to the building occupants.

FOR MECHANICALLY VENTILATED SPACES

• Monitor carbon dioxide concentrations within all densely occupied spaces (those with a design occupant density greater than or equal to 25 people per 1000 sq.ft.). CO2 monitoring locations shall be between 3 feet and 6 feet above the floor.
• For each mechanical ventilation system serving non-densely occupied spaces, provide a direct outdoor airflow measurement device capable of measuring the minimum outdoor airflow rate with an accuracy of plus or minus 15% of the design minimum outdoor air rate, as defined by ASHRAE 62.1-2004.

FOR NATURALLY VENTILATED SPACES

Monitor CO2 concentrations within all naturally ventilated spaces. CO2 monitoring shall be located within the room between 3 feet and 6 feet above the floor. One CO2 sensor may be used to represent multiple spaces if the natural ventilation design uses passive stack(s) or other means to induce airflow through those spaces equally and simultaneously without intervention by building occupants."

- LEED-NC Version 2.2 Reference Guide, page 301

 

LEED-NC Version 2.1

 

"Install a permanent carbon dioxide (CO2) monitoring system that provides feedback on space ventilation performance in a form that affords operational adjustments. Refer to the CO2 differential for all types of occupancy in accordance with ASHRAE 62- 2001, Appendix C."

- LEED-NC Version 2.1 Reference Guide, page 249

 

LEED-NC Version 2.2

• "Confirmation of the type of ventilation system and installed controls.
• Design narrative describing the project's ventilation design and CO2 monitoring system. Include specific information regarding location and quantity of installed monitors, operational parameters and setpoints.
• Provide copies of the applicable project drawings to document the location and type of installed sensors. Drawings should also show natural ventilation components (operable windows, air intakes, etc.) as applicable."

- LEED-NC Version 2.2 Reference Guide, page 304

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the mechanical engineer or responsible party, declaring and summarizing the installation, operational design and controls/zones for the carbon dioxide monitoring system. For mixed-use buildings, calculate CO2 levels for each separate activity level and use."

- LEED-NC Version 2.1 Reference Guide, page 249

(Carbon dioxide monitor at Blackstone)

 

• "Please provide drawings, specifications and cut sheets highlighting the installed carbon dioxide monitoring system.
• "Provide a narrative describing initial operation set point parameters and the sequence of operation and control of building systems (if applicable)."

 

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Blackstone (LEED-NC v2.1)

 

ASHRAE

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design	Design ventilation system based on the number of occupants.	MEP Engineers
Design Development	Identify loan fund and rebate opportunities.	HGCI and Client Project Manager
Construction Documents	This credit can be submitted with the Design Submittal, before construction, if using LEED online.	MEP Engineers with HGCI or LEED Consultant

The intent of this credit is to promote occupant health, comfort, and productivity by providing effective rates of ventilation and fresh air. Harvard University is committed to developing and maintaining an environment that enhances human health and fosters a transition toward sustainability.

The Davis Langdon study reports that "compliance with this credit has a very small construction cost impact, whether through the use of operable windows for natural windows for natural ventilation or through the increased use of outside air in mechanical ventilation systems," but operational costs can be significant if the relative humidity of the outdoor air is significantly different from the indoor air (Matthiessen, Fay and Morris, 20). For full cite, see Financial links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"FOR MECHANICALLY VENTILATED SPACES

• Increase breathing zone outdoor air ventilation rates to all occupied spaces by at least 30% above the minimum rates required by ASHRAE Standard 62.1-2004 as determined by EQ Prerequisite 1.

FOR NATURALLY VENTILATED SPACES

• Design natural ventilation systems for occupied spaces to meet the recommendations set forth in the Carbon Trust “Good Practice Guide 237” [1998]. Determine that natural ventilation is an effective strategy for the project by following the flow diagram process shown in Figure 1.18 of the Chartered Institution of Building Services Engineers (CIBSE) Applications Manual 10: 2005, Natural ventilation in non-domestic buildings.

AND

• Use diagrams and calculations to show that the design of the natural ventilation systems meets the recommendations set forth in the CIBSE Applications Manual 10: 2005, Natural ventilation in non-domestic buildings.

OR

• Use a macroscopic, multi-zone, analytic model to predict that room-by-room airflows will effectively naturally ventilate, defined as providing the minimum ventilation rates required by ASHRAE 62.1-2004 Chapter 6, for at least 90% of occupied spaces."

- LEED-NC Version 2.2 Reference Guide, page 307

 

LEED-NC Version 2.1

"For mechanically ventilated buildings, design ventilation systems that result in an air change effectiveness (Eac) greater than or equal to 0.9 as determined by ASHRAE 129-1997. For naturally ventilated spaces demonstrate a distribution and laminar flow pattern that involves not less than 90% of the room or zone area in the direction of air flow for at least 95% of hours of occupancy."

- LEED-NC Version 2.1 Reference Guide, page 253

Mechanically Ventilated Buildings:
“1) Confirm that the ventilation zone breathing rate in all occupied spaces have been designed to exceed the minimum rates required by ASHRAE 62.1-2004, or the local code, whichever is more stringent, by a minimum of 30%.

2) Design a narrative describing the project's ventilation system design. Include specific information regarding the fresh air intake volume for each specific occupied zone to demonstrate that the design exceeds the referenced standard, or the local code, whichever is more stringent, by a minimum of 30%."

Naturally Ventilated Buildings:

"1) Confirmation that the natural ventilation system has been designed to meet the recommendations set forth in the Carbon Trust Good Practice Guide 237 (1998).

2) Design narrative describing the design method (CISBE Method/Analytic Model) utilized in determining the natural ventilation design for the project. Provide specific information regarding calculation methodology and/or model results to demonstrate that the ventilation design complies with the referenced standard."

 

- LEED-NC Version 2.2 Reference Guide, page 312

 

FIRST submittal option for MECHANICALLY VENTILATED SPACES:

"Please provide ASHRAE 129 -1997 test results demonstrating air change effectiveness of at least 0.9."

SECOND submittal option for MECHANICALLY VENTILATED SPACES:

"Please provide section and plan drawings of each major mechanically ventilated room type. Drawings should clearly indicate all inlets, outlets, furniture, and occupants specific to the following system types:

(1) Mixing Systems - the outlet types, the characteristic room lengths, the return/exhaust openings, all air velocities, and the predicted Air Diffusion Performance Index (ADPI);

(2) Displacement/Unidirectional Systems - the outlet types, the return and exhaust openings, all air velocities, and the predicted distribution of the upper and lower stratification zones.

Airflow patterns must be graphically illustrated to scale. Cut sheets and specification tables for all terminal vents, grills, and registers must be provided and cross referenced to the drawings 2, Table 4, ADPI Selection Guide, for an estimated ADPI of at least 80%, one may use the Zone Air Distribution Effectiveness, Ez, in ASHRAE Standard 62-2001, Addendum n, Table 6.2, to identify the designed ACE for each zone. For detailed instructions, see the credit ruling dated 7/19/2004."

NATURALLY VENTILATED SPACES:

"Please provide section and plan drawings of each major naturally ventilated room type. Drawings should clearly indicate all fresh air inlets and outlets (vents/louvers and operable windows/skylights)."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Blackstone (LEED-NC v2.1)

 

ASHRAE

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction	Develop an IAQ Management plan that meets or exceeds SMACNA IAQ Guidelines for Buildings Under Construction, 1995, Chapter 3, using the using the HGCI IAQ Management Plan and HGCI IAQ Management Checklist for reference. See page 317 of the v2.2 Reference Guide for requirements. See EQc3.1 Model Submittals for examples of previous IAQ Management Plans used at Harvard.	Contractor
Construction	This credit is part of the Construction Submittal and should be documented during this time. See v. 2.2 Reference Guide for submittal documentation requirements.	Contractor with HGCI or LEED Consultant

The intent of this credit is to ensure that dust and contaminants from construction do not infiltrate permanent mechanical systems, to protect the health of construction workers and to sequence construction activities in order to decrease the amount of toxins in the building. Developing and adhering to an indoor air quality plan during construction aligns with Harvard University's commitment to developing and maintaining an environment that enhances human health, a basis of the University Sustainability Principles. Using an indoor air management plan during construction prioritizes the health of construction workers, who are part of the university community, which is a key element of the second sustainability principle: "...continuous improvement in...promoting health, productivity and safety of the university community through design and maintenance of the built environment."

According to the Davis Langdon study, the cost of compliance with this credit varies with location of the project. "In areas where construction IAQ management is widely used, the costs are minimal, if any. In other areas or with contractors unfamiliar with construction IAQ management the costs can be substantial" (Matthiessen, Fay and Morris, 20). For full cite, see Financial Links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Develop and implement an Indoor Air Quality (IAQ) Management Plan for the construction and pre-occupancy phases of the building as follows:

• During construction meet or exceed the recommended Control Measures of the Sheet Metal and Air Conditioning National Contractors Association (SMACNA) IAQ Guidelines for Occupied Buildings under Construction, 1995, Chapter 3.
• Protect stored on-site or installed absorptive materials from moisture damage.
• If permanently installed air handlers are used during construction, filtration media with a Minimum Efficiency Reporting Value (MERV) of 8 shall be used at each return air grille, as determined by ASHRAE 52.2-1999. Replace all filtration media immediately prior to occupancy."

- LEED-NC Version 2.2 Reference Guide, page 317

 

LEED-NC Version 2.1

"Develop and implement an Indoor Air Quality (IAQ) Management Plan for the construction and pre-occupancy phases of the building as follows:

• During construction meet or exceed the recommended Design Approaches of the Sheet Metal and Air Conditioning National Contractors Association (SMACNA) IAQ Guideline for Occupied Buildings under Construction, 1995, Chapter 3.
• Protect stored on-site or installed absorptive materials from moisture damage.
• If air handlers must be used during construction, filtration media with a Minimum Efficiency Reporting Value (MERV) of 8 must be used at each return air grill, as determined by ASHRAE 52.2-1999.
• Replace all filtration media immediately prior to occupancy. Filtration media shall have a Minimum Efficiency Reporting Value (MERV) of 13, as determined by ASHRAE 52.2-1999 for media installed at the end of construction."

- LEED-NC Version 2.1 Reference Guide, page 261

 

LEED-NC Version 2.2

• "Provide a copy of the project's Indoor Air Quality (IAQ) Management Plan.
• Confirm if the permanently installed air handling equipment was used during construction.
• Provide photos to highlight the implemented construction IAQ practices.
• List all filtration media (manufacturer, model #, MERV rating, location of installed filter) installed during construction and confirm that each was replaced prior to final occupancy.
• Provide an optional narrative describing any special circumstances or non-standard approaches taken by the project."

- LEED-NC Version 2.2 Reference Guide, page 320

 

LEED-NC Version 2.1

• "Provide the LEED Letter Template, signed by the general contractor or responsible party, declaring that a Construction IAQ Management Plan has been developed and implemented, and listing each air filter used during construction and at the end of construction. Include the MERV value, manufacturer name and model number.

AND EITHER

• Provide 18 photographs—six photographs taken on three different occasions during construction—along with identification of the SMACNA approach featured by each photograph, in order to show consistent adherence to the credit requirements.

OR

• Declare the five Design Approaches of SMACNA IAQ Guideline for Occupied Buildings under Construction, 1995, Chapter 3, which were used during building construction. Include a brief description of some of the important design approaches employed."

- LEED-NC Version 2.1 Reference Guide, page 261

"Please provide

• the IAQ management plan, as well as
• cut sheets indicating MERV value for all filtration media used during construction and installed immediately before occupancy."

- USGBC file named Audited_Credit_Requirements_Docs668.xls

Blackstone (LEED-NC v2.1)

Hamilton Hall (LEED-NC v2.1)

90 Mount Auburn Street (LEED-NC v2.1)

SMACNA

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction	Develop an IAQ Management Plan for post-construction and pre-occupancy using the HGCI IAQ Management Plan and HGCI IAQ Management Checklist for reference. Determine if air quality testing, or building flush-out will be performed. See page 323 of the v.2.2 Reference Guide for requirements. See EQc3.2 Model Submittals for examples of previous IAQ Management Plans used at Harvard.	Contractor with Client Project Manager
Construction	This credit is part of the Construction Submittal and should be documented during this time.	Contractor with HGCI or LEED Consultant

The purpose of this credit is to ensure healthy indoor air quality after construction but prior to occupancy. The Harvard University Sustainability Principles encourage maintaining environments that “enhance human health, productivity, and safety for occupants of Harvard's buildings.”

 

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Develop and implement an Indoor Air Quality (IAQ) Management Plan for the pre-occupancy phase as follows:

OPTION 1 — Flush-Out

• After construction ends, prior to occupancy and with all interior finishes installed, perform a building flush-out by supplying a total air volume of 14,000 cu.ft. of outdoor air per sq.ft. of floor area while maintaining an internal temperature of at least 60 degrees F and relative humidity no higher than 60%.

OR

• If occupancy is desired prior to completion of the flush-out, the space may be occupied following delivery of a minimum of 3,500 cu.ft. of outdoor air per sq.ft. of floor area to the space. Once a space is occupied, it shall be ventilated at a minimum rate of 0.30 cfm/sq.ft. of outside air or the design minimum outside air rate determined in EQ Prerequisite 1, whichever is greater. During each day of the flush-out period, ventilation shall begin a minimum of three hours prior to occupancy and continue during occupancy. These conditions shall be maintained until a total of 14,000 cu.ft./sq.ft. of outside air has been delivered to the space.

OR

OPTION 2 — Air Testing

• Conduct baseline IAQ testing, after construction ends and prior to occupancy, using testing protocols consistent with the United States Environmental Protection Agency Compendium of Methods for the Determination of Air Pollutants in Indoor Air and as additionally detailed in the Reference Guide.
• Demonstrate that the contaminant maximum concentrations listed below are not exceeded.

CONTAMINANT MAXIMUM CONCENTRATION
Formaldehyde 50 parts per billion
Particulates (PM10) 50 micrograms per cubic meter
Total Volatile Organic Compounds (TVOC) 500 micrograms per cubic meter
* 4-Phenylcyclohexene (4-PCH) 6.5 micrograms per cubic meter Carbon Monoxide (CO) 9 part per million and no greater than 2 parts per million above outdoor levels
* This test is only required if carpets and fabrics with styrene butadiene rubber (SBR) latex backing material are installed as part of the base building systems.

• For each sampling point where the maximum concentration limits are exceeded conduct additional flush-out with outside air and retest the specific parameter(s) exceeded to indicate the requirements are achieved. Repeat procedure until all requirements have been met. When retesting non-complying building areas, take samples from the same locations as in the first test.
• The air sample testing shall be conducted as follows:
  1) All measurements shall be conducted prior to occupancy, but during normal occupied hours, and with the building ventilation system starting at the normal daily start time and operated at the minimum outside air flow rate for the occupied mode throughout the duration of the air testing.
  2) The building shall have all interior finishes installed, including but not limited to millwork, doors, paint, carpet and acoustic tiles. Non-fixed furnishings such as workstations and partitions are encouraged, but not required, to be in place for the testing.
  3) The number of sampling locations will vary depending upon the size of the building and number of ventilation systems. For each portion of the building served by a separate ventilation system, the number of sampling points shall not be less than one per 25,000 sq.ft., or for each contiguous floor area, whichever is larger, and include areas with the least ventilation and greatest presumed source strength.
  4) Air samples shall be collected between 3 feet and 6 feet from the floor to represent the breathing zone of occupants, and over a minimum 4-hour period."

- LEED-NC Version 2.2 Reference Guide, page 323-324

 

LEED-NC Version 2.1

"Develop and implement an Indoor Air Quality (IAQ) Management Plan for the preoccupancy phase as follows:

• After construction ends and prior to occupancy conduct a minimum two week building flush-out with new Minimum Efficiency Reporting Value (MERV) 13 filtration media at 100% outside air. After the flush-out, replace the filtration media with new MERV 13 filtration media, except the filters solely processing outside air.

OR

• Conduct a baseline indoor air quality testing procedure consistent with the United States Environmental Protection Agency’s current Protocol for Environmental Requirements, Baseline IAQ and Materials, for the Research Triangle Park Campus, Section 01445."

- LEED-NC Version 2.1 Reference Guide, page 262

 

LEED-NC Version 2.2

• Confirmation of the approach taken by the project (pre-occupancy flush-out; flush-out with early occupancy; IAQ testing)
• A copy of the project's Indoor Air Quality testing report (if applicable)
• A narrative describing the project's specific flush-out procedures and/or IAQ testing process and results

 

LEED-NC Version 2.1

• "Provide the LEED Letter Template, signed by the architect, general contractor or responsible party, describing the building flush-out procedures and dates.

OR

• Provide the LEED Letter Template, signed by the architect or responsible party, declaring that the referenced standard’s IAQ testing protocol has been followed. Include a copy of the testing results."

- LEED-NC Version 2.1 Reference Guide, page 262

 

Blackstone (LEED-NC v2.1)

Hamilton Hall (LEED-NC v2.1)

 

SMACNA

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction Documents	See low-VOC adhesives and sealants used in Harvard projects: Technologies & Products: Materials/Finishes.	Architect
Construction Documents	Include language in specifications. See Model Specifications for EQc4.1. Adhesives and sealants must comply with the requirements of South Coast Air Quality Management District Rule #1168.	Architect
Construction	Review submittals to verify products meet project specifications, LEED requirements.	Architect, Contractor
Construction	This credit is part of the Construction Submittal and should be documented during this time.	Contractor with HGCI or LEED Consultant

Sealants and adhesives are a source of toxins in buildings. Off-gassing of products in classrooms, dorms or offices affects occupant health. Given that Americans spend 90% of their time indoors, the various building materials that off-gas require evaluation and investigation. An important aspect of the Sustainability Principles is the promotion of the health of the university community. Adhesives and sealants have traditionally off-gassed; low emitting adhesives and sealants are a viable alternative. This also decreases the “production of waste and hazardous materials, both in Harvard’s own operations and in those of its suppliers." Harvard can have a positive impact on the market through its purchasing. The application of research by Harvard University professors is a basic tenet of the Sustainability Principles: “encouraging environmental inquiry and institutional learning throughout the university community." Addressing environmental quality through public health measures is an effective method to promote health in the community. “Sustainability should be advanced through research, analysis, and experience gained over time." Faculty and doctoral students at the Harvard School of Public Health are researching personal exposure levels for many compounds found in building materials.

This design element has been cost neutral for Harvard University projects to date due to the wide availability of low-VOC adhesives and sealants.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"All adhesives and sealants used on the interior of the building (defined as inside of the weatherproofing system and applied on-site) shall comply with the requirements of the following reference standards:

• Adhesives, Sealants and Sealant Primers: South Coast Air Quality Management District (SCAQMD) Rule #1168. VOC limits are listed in the table below and correspond to an effective date of July 1, 2005 and rule amendment date of January 7, 2005.

Architectural Applications VOC Limit [g/L less water] Specialty Applications VOC Limit [g/L less water] Indoor Carpet Adhesives 50 PVC Welding 510 Carpet Pad Adhesives 50 CPVC Welding 490 Wood Flooring Adhesives 100 ABS Welding 325 Rubber Floor Adhesives 60 Plastic Cement Welding 250 Subfloor Adhesives 50 Adhesive Primer for Plastic 550 Ceramic Tile Adhesives 65 Contact Adhesive 80 VCT & Asphalt Adhesives 50 Special Purpose Contact Adhesive 250 Drywall & Panel Adhesives 50 Structural Wood Member Adhesive 140 Cove Base Adhesives 50 Sheet Applied Rubber Lining Operations 850 Multipurpose Construction Adhesives 70 Top & Trim Adhesive 250 Structural Glazing Adhesives 100 Substrate Specific Applications VOC Limit [g/L less water] Sealants VOC Limit [g/L less water] Metal to Metal 30 Architectural 250 Plastic Foams 50 Nonmembrane Roof 300 Porous Material (except wood) 50 Roadway 250 Wood 30 Single-Ply Roof Membrane 450 Fiberglass 80 Other 420 Sealant Primers VOC Limit [g/L less water] Architectural Non Porous 250 Architectural Porous 775 Other 750

• Aerosol Adhesives: Green Seal Standard for Commercial Adhesives GS-36 requirements in effect on October 19, 2000.

Aerosol Adhesives: VOC weight [g/L minus water]
General purpose mist spray 65% VOCs by weight
General purpose web spray 55% VOCs by weight
Special purpose aerosol adhesives (all types) 70% VOCs by weight

- LEED-NC Version 2.2 Reference Guide, pages 333-334

 

LEED-NC Version 2.1

“The VOC content of adhesives and sealants used must be less than the current VOC content limits of South Coast Air Quality Management District (SCAQMD) Rule #1168, AND all sealants used as fillers must meet or exceed the requirements of the Bay Area Air Quality Management District Regulation 8, Rule 51."

- LEED-NC Version 2.1 Reference Guide, page 269

 

LEED-NC Version 2.2

• "Provide a listing of each indoor adhesive, sealant, and sealant primer produce used on the project. Include the manufacturer's name, product name, specific VOC data (in g/L, less water) for each product, and the corresponding allowable VOC from the reference standard.
• Provide a listing of each indoor aerosol adhesive product used on the project. Include the manufacturer's name, product name, specific VOC data (in g/L, less water) for each product, and the corresponding allowable VOC from the reference standard.
• Provide a narrative to describe any special circumstances or non-standard compliance paths taken by the project."

- LEED-NC Version 2.1 Reference Guide, page 335

 

LEED-NC Version 2.1

“Provide the LEED Letter Template, signed by the architect or responsible party, listing the adhesives and sealants used in the building and declaring that they meet the noted requirements."

- LEED-NC Version 2.1 Reference Guide, page 269

• “Please provide cut sheets, MSDSs, or letters from product manufacturers clearly indicating VOC levels for each product.
• Include a summary table comparing credit requirements and actual VOC levels for each product."

- US Green Building Council

Blackstone (LEED-NC v2.1)

Hamilton Hall (LEED-NC v2.1)

The VOC balance method has proven useful on some Harvard projects where a desired product has high VOC content.

South Coast Air Quality Management District (SCAQMD) Rule #1168

Bay Area Air Quality Management District Regulation 8, Rule 51

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction Documents	See low-VOC paints and coatings used in Harvard projects: Technologies & Products: Materials/Finishes.	Architect
Construction Documents	Include language in specifications. See Model Specifications for EQc4.2. Paints and coatings must comply with Green Seal Standard GS-11.	Architect
Construction	Review submittals to verify products meet project specifications and LEED requirements.	Architect, Contractor
Construction	This credit is part of the Construction Submittal and should be documented during this time.	Contractor with HGCI or LEED Consultant

The intent of this credit is to improve indoor air quality by eliminating high-emitting paints and coatings. One of the fundamental tenets of Harvard Sustainability Principles is to promote human health. Eliminating volatile organic compounds from paints and coatings in a building promotes occupant health and improves indoor air quality.

The Davis Langdon study points out that low-emitting paints and coatings are widely available, and therefore "should have only minimal – if any – impact on cost" (Matthiessen, Fay and Morris, 21). For full cite, see Financial Links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Paints and coatings used on the interior of the building (defined as inside of the weatherproofing system and applied on-site) shall comply with the following criteria:

• Architectural paints, coatings and primers applied to interior walls and ceilings: Do not exceed the VOC content limits established in Green Seal Standard GS-11, Paints, First Edition, May 20, 1993.
  • Flats: 50 g/L
  • Non-Flats: 150 g/L
• Anti-corrosive and anti-rust paints applied to interior ferrous metal substrates: Do not exceed the VOC content limit of 250 g/L established in Green Seal Standard GC-03, Anti-Corrosive Paints, Second Edition, January 7, 1997.
• Clear wood finishes, floor coatings, stains, and shellacs applied to interior elements: Do not exceed the VOC content limits established in South Coast Air Quality Management District (SCAQMD) Rule 1113, Architectural Coatings, rules in effect on January 1, 2004.
  • Clear wood finishes: varnish 350 g/L; lacquer 550 g/L
  • Floor coatings: 100 g/L
  • Sealers: waterproofing sealers 250 g/L; sanding sealers 275 g/L; all other sealers 200 g/L
  • Shellacs: Clear 730 g/L; pigmented 550 g/L
  • Stains: 250 g/L"

- LEED-NC Version 2.2 Reference Guide, page 337

 

LEED-NC Version 2.1

"VOC emissions from paints and coatings must not exceed the VOC and chemical component limits of Green Seal Standard GS-11 requirements."

- LEED-NC Version 2.1 Reference Guide, page 270

 

LEED-NC Version 2.2

• "Provide a listing of each indoor paint and coating used on the project. Include the manufacturer's name, product name, specific VOC data (in g/L, less water) for each product, and the corresponding allowable VOC from the reference standard.
• Provide a narrative to describe any special circumstances or non-standard compliance paths taken by the project."

- LEED-NC Version 2.1 Reference Guide, page 338

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, listing all the interior paints and coatings used in the building that are addressed by Green Seal Standard GS-11 and stating that they comply with the current VOC and chemical component limits of the standard."

- LEED-NC Version 2.1 Reference Guide, page 270.

"Please provide

• cut sheets, MSDS, or letters from product manufacturers clearly indicating VOC levels for each product.
• Include a summary table comparing credit requirements and actual VOC levels for each product."

- USGBC's audit requirements in "Audited_Credit_Requirements_Docs668.xls"

Hamilton Hall (LEED-NC v2.1)

90 Mount Auburn Street (LEED-NC v2.1)

Green Seal Standard GS-11

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Design Development	Research carpets for later specification in construction document specs. See low-VOC carpets used in Harvard projects: Technologies & Products: Materials/Finishes.	Client Project Manager and Architect
Construction Documents	Include language in specifications. See Model Specifications for EQc4.3. Carpet systems must comply with the Carpet and Rug Institute's Green Label Plus program.	Architect
Construction	Review submittals to verify products meet project specifications and LEED requirements.	Architect, Contractor
Construction	This credit is part of the Construction Submittal and should be documented during this time.	Contractor with HGCI or LEED Consultant

Carpet has a significant environmental impact. This design element considers the VOC content of carpets, but there are also other considerations when selecting carpet: where it was manufactured, its recycled content, its materials, and its overall environmental impact. The university is committed to continuous improvement in measures to increase efficiency, increase the use of renewable resources, and to decrease production of waste and hazardous materials, both in Harvard’s own operations and in those of its suppliers. Avoiding products with volatile organic compounds contributes to the second of the Sustainability Principles, to “promote the health, productivity and safety of the university community through design and maintenance of the built environment.” Since carpet has significant environmental consequences, understanding its life cycle impact is a way for the university to enable comparative analysis of sustainability implications and to support long-term economic, environmental and socially responsible decision-making.

As above, this credit should have minimal, if any, impact on cost.

 

LEED-NC Version 2.2

"All carpet installed in the building interior shall meet the testing and product requirements of the Carpet and Rug Institute’s Green Label Plus program.
All carpet cushion installed in the building interior shall meet the requirements of the Carpet and Rug Institute Green Label program. All carpet adhesive shall meet the requirements of EQ Credit 4.1: VOC limit of 50 g/L."

- LEED-NC Version 2.2 Reference Guide, page 341

 

LEED-NC Version 2.1

"Carpet systems must meet or exceed the requirements of the Carpet and Rug Institute’s Green Label Indoor Air Quality Test Program."

-LEED-NC Version 2.1 Reference Guide, page 271

 

LEED-NC Version 2.2

• "Provide a listing of each carpet product installed in the building interior. Confirm that the product complies with the CRI Green Label Plus testing program.
• Provide a listing of each carpet cushion project installed in the building interior. Confirm that the project complies with the CRI Green Label testing program.
• Provide a narrative to describe any special circumstances or non-standard compliance paths taken by the project."

-LEED-NC Version 2.2 Reference Guide, page 342

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, listing all the carpet systems used in the building and stating that they comply with the current VOC limits of the Carpet and Rug Institute’s Green Label Indoor Air Quality Test Program."

- LEED-NC Version 2.1 Reference Guide, page 271

 

Blackstone (LEED-NC v2.1)

Carpet and Rug Institute’s Green Label Indoor Air Quality Test Program

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction Documents	See LEED requirements, page 345 of Reference Guide.	Client Project Manager and Architect
Construction Documents	See eligible composite wood products used in Harvard projects: Technologies & Products: Materials/Finishes.	Architect
Construction Documents	Include language in specifications. See Model Specifications for EQc4.4.	Architect
Construction	Review submittals to verify products meet project specifications and LEED requirements.	Architect, Contractor
Construction	This credit is part of the Construction Submittal and should be documented during this time.	Contractor with HGCI or LEED Consultant

The intent of this credit is to promote the use of alternatives to urea-formaldehyde in composite woods. Urea resins are often used in the manufacture of particleboard, plywood paneling, and medium density fiberboard. By selecting materials that do not use urea resin in their manufacture, designers can follow one of the tenets of the first Campus-wide Sustainability Principles: "to decrease production of ...hazardous materials, both in Harvard’s own operations and in those of its suppliers." Eliminating urea formaldehyde from the built environment should improve indoor air quality, thereby promoting the health and safety of the university community.

According to the Davis Langdon study, this credit is an exception to the minimal costs of EQ credits 4.1-4.3 (see above). "Prices for composite wood materials with no added urea-formaldehyde can vary widely, depending on the product selected and market conditions (Matthiessen, Fay and Morris, 21). For full cite, see Financial Links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Composite wood and agrifiber products used on the interior of the building (defined as inside of the weatherproofing system) shall contain no added urea-formaldehyde resins. Laminating adhesives used to fabricate on-site and shop-applied composite wood and agrifiber assemblies shall contain no added urea-formaldehyde resins. Composite wood and agrifiber products are defined as: particleboard, medium density fiberboard (MDF), plywood, wheatboard, strawboard, panel substrates and door cores. Materials considered fit-out, furniture, and equipment (FF&E) are not considered base building elements and are not included."

- LEED-NC Version 2.2 Reference Guide, page 345

 

LEED-NC Version 2.1

"Composite wood and agrifiber products must contain no added urea formaldehyde resins."

- LEED-NC Version 2.1 Reference Guide, page 272

 

LEED-NC Version 2.2

• "Provide a listing of each composite wood and agrifiber product installed in the building interior. Confirm that each product does not contain any added urea-formaldehyde.
• Provide a narrative to describe any special circumstances or non-standard compliance paths taken by the project."

- LEED-NC Version 2.2 Reference Guide, page 346

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, listing all the composite wood products used in the building and stating that they contain no added urea-formaldehyde resins."

- LEED-NC Version 2.1 Reference Guide, page 272

“Please provide cut sheets clearly indicating the bonding agents for each composite wood and agrifiber product used in the project and demonstrating that no added urea formaldehyde resins are used in these products.”

- from the US Green Building Council's file: Audited_Credit_Requirements_Docs668.xls

 

Blackstone (LEED-NC v2.1)

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design	Design spaces to isolate and properly exhaust janitorial spaces.  Properly plumb maintenance drains where hazardous chemicals may be disposed. Separate housekeeping spaces. See EQc5 requirements on page 353.	Architect
Construction Documents	Document this credit per EQc5 requirements. See EQc5 Model Submittals.	Architect
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	Architect with HGCI or LEED Consultant

The intent of this credit is to design a building so that it reduces occupant exposure to harmful fumes, and thereby supports occupant health. Harvard University is committed to “developing and maintaining an environment that enhances human health and fosters a transition toward sustainability.” In the university's Sustainability Principles, Harvard is committed to "promoting the health, productivity and safety of the university community through design and maintenance of the built environment."

 

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Design to minimize and control pollutant entry into buildings and later cross-contamination of regularly occupied areas:

• Employ permanent entryway systems at least six feet long in the primary direction of travel to capture dirt and particulates from entering the building at all entryways that are directly connected to the outdoors. Acceptable entryway systems include permanently installed grates, grilles, or slotted systems that allow for cleaning underneath. Roll-out mats are only acceptable when maintained on a weekly basis by a contracted service organization. Qualifying entryways are those that serve as regular entry points for building users.
• Where hazardous gases or chemicals may be present or used (including garages, housekeeping/laundry areas and copying/printing rooms), exhaust each space sufficiently to create negative pressure with respect to adjacent spaces with the doors to the room closed. For each of these spaces, provide self-closing doors and deck to deck partitions or a hard lid ceiling. The exhaust rate shall be at least 0.50 cfm/sq.ft., with no air recirculation. The pressure differential with the surrounding spaces shall be at least 5 Pa (0.02 inches of water gauge) on average and 1 Pa (0.004 inches of water) at a minimum when the doors to the rooms are closed.
• In mechanically ventilated buildings, provide regularly occupied areas of the building with air filtration media prior to occupancy that provides a Minimum Efficiency Reporting Value (MERV) of 13 or better. Filtration should be applied to process both return and outside air that is to be delivered as supply air."

-LEED-NC Version 2.2 Reference Guide, page 353

 

LEED-NC Version 2.1

"Design to minimize pollutant cross-contamination of regularly occupied areas:

• Employ permanent entryway systems (grills, grates, etc.) to capture dirt, particulates, etc. from entering the building at all high volume entryways.
• Where chemical use occurs (including housekeeping areas and copying/printing rooms), provide segregated areas with deck to deck partitions with separate outside exhaust at a rate of at least 0.50 cubic feet per minute per square foot, no air re-circulation and maintaining a negative pressure of at least 7 PA (0.03 inches of water gauge).
• Provide drains plumbed for appropriate disposal of liquid waste in spaces where water and chemical concentrate mixing occurs."

-LEED-NC Version 2.1 Reference Guide, page 279

 

LEED-NC Version 2.2

• "Provide confirmation that required entryway systems have been provided.
• Provide a listing of each entryway product installed in the building. For roll-up or carpeted systems, confirm that the required contracted maintenance will take place.
• Provide copies of the project's construction drawings to highlight the location of the installed entryway systems.
• Confirm that chemical use areas have been designed as separate rooms with dedicated exhaust systems and appropriate negative pressurization.
• Provide copies of the project's mechanical drawings to highlight the location of chemical usage areas, room separations, and the associated exhaust systems.
• If mechanically ventilated, confirm that the installed filters have a MERV rating of 13 or better.
• Provide a listing of the installed filters and their associated MERV ratings.
• Provide a narrative to describe any special circumstances or non-standard compliance paths taken by the project."

- LEED-NC Version 2.2 Reference Guide, page 353

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, declaring that:

• Permanent entryway systems (grilles, grates, etc.) to capture dirt, particulates, etc. are provided at all high volume entryways.
• Chemical use areas and copy rooms have been physically separated with deck-to-deck partitions; independent exhaust ventilation has been installed at 0.50 cfm/square foot and that a negative pressure differential of 7 PA has been achieved.
• In spaces where water and chemical concentrate mixing occurs, drains are plumbed for environmentally appropriate disposal of liquid waste."

- LEED-NC Version 2.1 Reference Guide, page 279

• "Please provide narratives, drawings and cut sheets supporting the declarations made in the LEED Letter Template.
• "Document permanent entryway systems, construction methods (deck to deck partitions, independent ventilation system etc.) in chemical use areas, and drainage systems appropriate for disposal of liquid waste in areas where water and chemical mixing occurs (i.e. janitors' closets).
• "Documentation should also clearly identify the location of copiers and/or centralized copying areas or alternatively confirm the lack there of."

- Source: US Green Building Council

 

Blackstone (LEED-NC v2.1)

ASHRAE

Green Seal

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design	Establish lighting density targets per square foot. See Advanced Buildings Benchmark for guidelines.	Architect and/or Lighting Designer
Schematic Design	Incorporate lighting controls into the design.	Architect, Electrical Engineer and/or Lighting Consultants
Design Development	Coordinate switches with proposed furniture layout.	Architect & Electrical Engineer
Design Development	See utility rebates for lighting switches.	MEP
Construction Documents	Submit LEED documentation per v2.2 requirements (Reference Guide page 357). See EQc6.1 Model Submittals.	Architect
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	HGCI or LEED Consultant

The intent of this credit is to provide building occupants with control of their workspace lighting, temperature and air movement. The goal of the second University Sustainability Principle is to “promote the health, productivity and safety of the university community through design and maintenance of the built environment.” Research on the effects of personal control over one's work space is being done throughout the university. These studies help the university to establish indicators for sustainability to support long-term economic, environmental and socially responsible decision-making.

According to the Davis Langdon study, these costs can be minimal to significant, but are easily achieved (Matthiessen, Fay and Morris, 21). For full cite, see Financial Links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Provide individual lighting controls for 90% (minimum) of the building occupants to enable adjustments to suit individual task needs and preferences.

AND

Provide lighting system controllability for all shared multi-occupant spaces to enable lighting adjustment that meets group needs and preferences."

- LEED-NC Version 2.2 Reference Guide, page 357

 

LEED-NC Version 2.1

"Provide at least an average of one operable window and one lighting control zone per 200 square feet for all regularly occupied areas within 15 feet of the perimeter wall."

- LEED-NC Version 2.1 Reference Guide, page 283

 

LEED-NC Version 2.2

• "For individual workstation controls, provide a listing of the total number of individual workstations and lighting controls.
• For shared multi-occupant space control, provide a listing of the project's group multi-occupant spaces and a description of the installed lighting controls.
• Provide a narrative describing the project's lighting control strategy. Include data regarding the type and location of individual controls (general area illumination controls for multi-workstation spaces may not be counted towards this credit) and also the type and location of controls provided for shared multi-occupant spaces."

- LEED-NC Version 2.2 Reference Guide, page 359

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, demonstrating and declaring that for regularly occupied perimeter areas of the building a minimum of one operable window and one lighting control zone are provided per 200 square feet on average."

- LEED-NC Version 2.1 Reference Guide, page 283

"To support the drawings and calculations already provided with the Letter Template, please provide cut sheets of operable windows and lighting controls serving perimeter areas of the building."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Hamilton Hall (LEED-NC v2.1)

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Schematic Design through Construction Documents	Include occupant thermal controls in the design. See LEED guidelines, page 361 of v2.2 Reference Guide.	Architect, Engineers
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	HGCI or LEED Consultant

The intent of this design element is to allow occupants control over their thermal comfort in both individual and group settings. This design element ties in to the second Sustainability Principle, in which the university demonstrates a commitment to "promote the health, productivity and safety of the university community through design and maintenance of the built environment." Certain strategies, such as operable windows, also have the potential to conserve energy, which is a significant part of the Sustainability Principles.

The cost of controllability of thermal comfort can be fairly high, but when integrated into more carefully planned systems, the cost can be significantly lower (Matthiessen, Fay and Morris, 21). For full cite, see Financial Links.

The requirements for EQ credits 6.1 and 6.2 were reorganized for LEED-NC version 2.2.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Provide individual comfort controls for 50% (minimum) of the building occupants to enable adjustments to suit individual task needs and preferences. Operable windows can be used in lieu of comfort controls for occupants of areas that are 20 feet inside of and 10 feet to either side of the operable part of the window. The areas of operable window must meet the requirements of ASHRAE 62.1-2004 paragraph 5.1 Natural Ventilation.

AND

Provide comfort system controls for all shared multi-occupant spaces to enable adjustments to suit group needs and preferences. Conditions for thermal comfort are described in ASHRAE Standard 55-2004 to include the primary factors of air temperature, radiant temperature, air speed and humidity. Comfort system control for the purposes of this credit is defined as the provision of control over at least one of these primary factors in the occupant’s local environment."

-LEED-NC Version 2.2 Reference Guide, page 361

 

LEED-NC Version 2.1

"Provide controls for each individual for airflow, temperature and lighting for at least 50% of the occupants in non-perimeter, regularly occupied areas."

- LEED-NC Version 2.1 Reference Guide, page 284

 

LEED-NC Version 2.2

• "For individual workstation controls, provide a listing of the total number of individual workstations and lighting controls.
• For shared multi-occupant space control, provide a listing of the project's group multi-occupant spaces and a description of the installed lighting controls.
• Provide a narrative describing the project's lighting control strategy. Include data regarding the type and location of individual controls."

- LEED for New Construction Version 2.2 Reference Guide, page 363

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the architect or responsible party, demonstrating and declaring that controls for individual airflow, temperature and lighting are provided for at least 50% of the occupants in non-perimeter, regularly occupied areas."

- LEED-NC Version 2.1 Reference Guide, page 284.

"To support the drawings and calculations already provided with the Letter Template, please provide cut sheets of temperature, ventilation, and lighting control systems serving non-perimeter areas of the building."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Wyss Hall (LEED-NC v2.1)

ASHRAE

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction Documents	This credit can be submitted  with the Design Submittal, before construction, if using LEED online.	HGCI or LEED Consultant

The purpose of this credit is to provide a comfortable environment and support productivity for occupants. The Harvard Sustainability Principles encourage maintaining environments that enhance human health, productivity, and safety for occupants of Harvard's buildings.

According to the Davis Langdon study, "most projects are designed to comply with ASHRAE comfort standards, and meet requirements for no added cost" (Matthiessen, Fay and Morris, 21). For full cite, see Financial Links.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Design HVAC systems and the building envelope to meet the requirements of ASHRAE Standard 55-2004, Thermal Comfort Conditions for Human Occupancy. Demonstrate design compliance in accordance with the Section 6.1.1 Documentation."

- LEED-NC Version 2.2 Reference Guide, page 365

 

LEED-NC Version 2.1

"Comply with ASHRAE Standard 55-1992, Addenda 1995, for thermal comfort standards including humidity control within established ranges per climate zone. For naturally ventilated buildings, utilize the adaptive comfort temperature boundaries, using the 90% acceptability limits as defined in the Collaborative for High Performance Schools (CHPS) Best Practices Manual, Appendix C – A Field Based Thermal Comfort Standard for Naturally Ventilated Buildings, Figure 2."

- LEED-NC Version 2.1 Reference Guide, page 293

 

LEED-NC Version 2.2

• "Provide data regarding seasonal temperature and humidity design criteria.
• Provide a narrative describing the method used to establish the thermal comfort conditions for the project and how the systems design addresses the design criteria. Include specific information regarding compliance with the referenced standard."

- LEED-NC Version 2.2 Reference Guide, page 367

 

LEED-NC Version 2.1

• "For mechanically ventilated spaces: provide the LEED Letter Template, signed by the engineer or responsible party, declaring that the project complies with ASHRAE Standard 55-1992, Addenda 1995. Include a table that identifies each thermally controlled zone, and that summarizes for each zone the temperature and humidity control ranges and the method of control used.

OR

• For naturally ventilated spaces: provide the LEED Letter Template, signed by the engineer or responsible party declaring that the project complies with the 90% acceptability limits of the adaptive comfort temperature boundaries in the Collaborative for High Performance Schools (CHPS) Best Practices Manual Appendix C – A Field Based Thermal Comfort Standard for Naturally Ventilated Buildings, Figure 2."

- LEED-NC Version 2.1 Reference Guide, page 293

"Please provide a

• narrative outlining the design criteria and assumptions for comfort ranges. To achieve this audited credit it is necessary to provide a
• psychometric analysis including calculations and a graphic representation.
• For any naturally ventilated spaces provide calculations that indicate that the building will remain within the acceptability limits of the adaptive comfort temperature boundaries in the Collaborative for High Performance Schools (CHPS) Best Practices Manual Appendix C-A Field Thermal Comfort Standard for Naturally Ventilated Buildings, Figure 2.
• Provide data that demonstrates that indoor humidity is maintained within the ranges specified by ASHRAE 55-1992. In a mild climate, this may be possible in the absence of humidity control simply through the interaction of moist indoor air with dry outside air.
• Calculations should demonstrate that the interaction of outdoor airflow rates at minimum outdoor humidity conditions and moist indoor air based on occupant density results in the project remaining within ASHRAE 55-1992 boundaries when occupied."

- LEED-NC version 2.1: Audited Credit Requirements; USGBC

Blackstone (LEED-NC v2.1)

 

Design Phase	Recommended Roles: Activities	Recommended Roles: Responsibilities
Construction Documents	This credit can be submitted with the Design Submittal, before construction, if using LEED online.	HGCI or LEED Consultant

The intent is to provide for the assessment of building thermal comfort over time. The Harvard University Sustainability Principles encourage maintaining environments that enhance human health, productivity, and safety for occupants of Harvard's buildings.

There should be no cost implication because for Harvard projects, operations staff can administer the survey to building occupants.

 

LEED-NC Version 2.2

See updated Credit Interpretation Rulings issued by the U.S. Green Building Council.

"Agree to implement a thermal comfort survey of building occupants within a period of six to 18 months after occupancy. This survey should collect anonymous responses about thermal comfort in the building including an assessment of overall satisfaction with thermal performance and identification of thermal comfort-related problems. Agree to develop a plan for corrective action if the survey results indicate that more than 20% of occupants are dissatisfied with thermal comfort in the building. This plan should include measurement of relevant environmental variables in problem areas in accordance with ASHRAE Standard 55-2004."

- LEED-NC Version 2.2 Reference Guide, page 369

 

LEED-NC Version 2.1

"Install a permanent temperature and humidity monitoring system configured to provide operators control over thermal comfort performance and the effectiveness of humidification and/or dehumidification systems in the building."

- LEED-NC Version 2.1 Reference Guide, page 294

 

LEED-NC Version 2.2

"Provide a narrative describing the survey planned for the validation of the thermal comfort conditions for the project. Include a specific description of the provisions for creating a plan for corrective action."

- LEED-NC Version 2.2 Reference Guide, page 371

 

LEED-NC Version 2.1

"Provide the LEED Letter Template, signed by the engineer or responsible party, declaring that a permanent temperature and humidity monitoring system will operate throughout all seasons to permit control of the building zones within the seasonal thermal comfort ranges defined in ASHRAE 55-1992, Addenda 1995. Confirm that the temperature and humidity controls were (