Entry Type ID Date Applicable Rating System Primary Credit Inquiry (LIs) Ruling (LIs) Related Addenda/LIs Related Resources Campus Applicable Internationally Applicable Country Applicability Reference Guide (Addenda) Page (Addenda) Location (Addenda) Description of Change (Addenda) "Rating System Correction, Reference Guide Correction" "100000427" "2010-07-19" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" " NC Rating System: 72, Schools Rating System: 71, CS Rating System: 70, Reference Guide: 511" "NC, SCHOOLS & CS box" "Remove the fourth bullet item:\n\nProvide containment (i.e. a closed container for storage for off-site disposal\nin a regulatory compliant storage area, preferably outside the building) for\nappropriate disposal of hazardous liquid wastes in places where water and\nchemical concentrate mixing occurs (e.g., housekeeping, janitorial and\nscience laboratories)." "Reference Guide Correction" "100000428" "2010-07-19" "New Construction, Schools - New Construction, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" "512" "Environmental Issues" "Replace the paragraph with the following:\n\nThis credit recognizes projects that reduce or mitigate human contact with\nairborne chemicals and particles. Additional materials and energy may be\nrequired to provide entryway systems and isolated chemical-use areas." "Reference Guide Correction" "100000429" "2010-07-19" "New Construction, Schools - New Construction, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" "513" "4. Implementation" "In the fourth line of the paragraph, remove the text ""...; in addition, the storage, mixing and disposal of housekeeping liquids may adversely affect human health""" "Reference Guide Correction" "100000431" "2010-07-19" "New Construction, Schools - New Construction, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" "514" "Hazardous Chemical Areas" "Remove the sixth paragraph of the section:\n\nRooms where chemicals are mixed and disposed of should be isolated.\nThese rooms should include sinks and/or drains in appropriate locations to\nensure that chemicals are disposed of properly and are not dumped into\ninadequate spaces (e.g., restrooms). Local codes requiring separate drain\nlines must be followed." "Reference Guide Correction" "100000432" "2010-07-19" "New Construction, Schools - New Construction, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" "515" "5. Timeline and Team" "Replace the second paragraph with the following text:\n\nDuring the design phase, the architect should consider the location and\ntype of entryway systems and allow adequate space for entryway systems.\nDuring the schematic design phase, the team should confirm the locations\nof areas where chemicals and high-volume copy, fax, and print equipment\nwill be used. It may be possible to locate such rooms above or adjacent to\n1 another to make individual exhaust systems unnecessary and minimize\nexhaust ductwork. Also confirm that chemical and equipment rooms are\nproperly isolated from adjacent spaces. The mechanical engineer should\nincorporate MERV 13 filters, dedicated exhaust systems; these elements\nwill affect the fan sizing, shaft layout, and underground coordination." "Rating System Correction, Reference Guide Correction" "100000426" "2010-07-19" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" " NC Rating System: 72, Schools Rating System: 71, CS Rating System: 70, Reference Guide: 511" "NC, SCHOOLS & CS box" "Replace the third bullet item with the following text:\n\n • In mechanically ventilated buildings, each ventilation system that supplies outdoor air shall comply with the following:\n\n o Particle filters or air cleaning devices shall be provided to clean the outdoor air at any location prior to its introduction to occupied spaces.\n\n o These filters or devices shall be rated a minimum efficiencyreporting value (MERV) of 13 or higher in accordance with ASHRAE Standard 52.2.\n\n o Clean air Filtration media shall be installed in all air systems after completion of construction and prior to occupancy.\n\n" "Reference Guide Correction" "100000430" "2010-07-19" "New Construction, Schools - New Construction, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "Green Building Design and Construction, 2009 edition" "513" "Entryway Systems" "In the first and second paragraphs, replace both instances of ""high-traffic"" with ""regularly used""" "Reference Guide Correction, Global ACP" "100001342" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90, RG: 511" "Requirements" "The second sub-bullet (5th bullet overall) should read: ""These filters or devices shall meet one of the following criteria:""" "Reference Guide Correction, Global ACP" "100001343" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "100001344, 100001345, 100001346" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90, RG: 511" "Requirements" "Add 3 new bullets below the second sub-bullet. Indent these bullets farther." "Reference Guide Correction, Global ACP" "100001344" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "100001343" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90, RG: 511" "Requirements" "The first new bullet should read: ""Filtration media is rated at a minimum efficiency reporting value (MERV) of 13 or higher in accordance with ASHRAE Standard 52.2.""" "Reference Guide Correction, Global ACP" "100001345" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "100001343" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90, RG: 511" "Requirements" "The second new bullet should read: ""Filtration media is Class F7 or higher, as defined by CEN Standard EN 779: 2002, Particulate air filters for general ventilation, Determination of the filtration performance""" "Reference Guide Correction, Global ACP" "100001346" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "100001343" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90, RG: 511" "Requirements" "The third new bullet should read: ""Filtration media has a minimum dust spot efficiency of 80% or higher and greater than 98% arrestance on a particle size of 3-10 " "Global ACP" "100001347" "2012-07-06" "New Construction, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "None" "None" "X" "Green Building Design and Construction, 2009 edition $ Green Building Design and Construction, 2009 Edition, updated June 2010" "NC RS: 85, CS RS: 83, Schools RS: 90" "Requirements" "Delete the Alternative Compliance Path for Projects Outside the U.S." "LEED Interpretation" "10098" "2011-08-01" "New Construction, Core and Shell, Schools - New Construction, Retail - New Construction, Healthcare, Data centers - New Construction, Hospitality - New Construction, Commercial Interiors, Retail - Commercial Interiors, Existing Buildings, Schools - Existing Buildings, Retail - Existing Buildings" "IEQc5: Indoor Chemical and Pollutant Source Control" "Where there are physical impediments to locating 10 ft of walk-off mats inside the building, is it acceptable to locate a portion of the mat or grate outside and then the remainder of the required 10 ft inside?" "The intent for the entryway system (grilles, grates, walk-off mats) is to capture dirt and dust. An exception to the 10 ft length and/or indoor location is acceptable provided your alternative solution meets this intent and is thoroughly justified. Applicable Internationally." "5585, 5696" "None" "X" "LEED Interpretation" "10252" "2012-10-01" "New Construction, Core and Shell, Schools - New Construction, Retail - New Construction, Healthcare, Commercial Interiors, Retail - Commercial Interiors, Existing Buildings" "IEQc5: Indoor Chemical and Pollutant Source Control" "Carpet tile is not currently considered an acceptable entryway system. One reason carpet tile is not accepted is because it cannot be cleaned underneath and therefore does not meet the performance of mechanical systems (such as grates/grilles), or roll-out mats. Carpet tile is a highly desired material for walk off areas due to its ease of maintenance as compared to mechanical systems, avoidance of trip hazards associated with roll-out mats, and numerous other factors. The ability to clean underneath carpet tile is not necessary. Carpet tile creates a sealed floor where dirt and moisture do not penetrate the seams. Though not specifically required by the rating system, the reference guide provides suggestions for optimal performance attributes for entryway systems. The carpet tile product we are suggesting meets the performance-related attributes as follows: \nCapture particles & prevent interior contamination- the carpet tile product is specifically designed to withstand heavy traffic at entranceways. Captures and hides soil, requires minimal maintenance and helps prevent slips and falls. Extend 10 feet: the carpet tile will extend 15\' into the interior from the exterior entrance and 40\' in left-right directions along the building lobby. Solid backings & appropriate for climate- the carpet tile backing is stable even under extreme changes in temperature and humidity. It will not move, create gaps, or curl up over time. High-void-volume & high fiber height- the carpet tile is produced with needlepunch hair-like face fibers with pile height of 0.165 in. Electrostatic propensity- the electrostatic propensity level is less than 2.5 kV. Weekly cleaning - the walk-off system will be maintained by the in-house school maintenance staff. The tiles are vacuumed daily and spot cleaned with appropriate environmentally-preferable cleaning products as needed. If an individual tile is deemed to be damaged beyond repair, it is simply removed and immediately replaced with a new identical tile. \n \nHow can we demonstrate that carpet tile is an equally performing or better solution for entryway systems?" "The applicant is requesting confirmation that carpet tiles may be used as acceptable entryway systems. Yes, carpet tiles with similar attributes to the product described are acceptable entryway systems.Conventional carpet is not acceptable, the carpet tile must be specifically designed for entryway system or similar use, have performance attributes equivalent to other acceptable entryway systems, and must be regularly maintained. Applicable Internationally. \n\n***Updated 01/012013 to add applicability for LEED 2009 for Healthcare and to remove the text ""(such as high pile height)""." "None" "None" "X" "LEED Interpretation" "2021" "2008-01-29" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "The building in question will be a 200,000 square feet warehouse with a 300 square feet office space. The warehouse space will be used for storage of goods and materials that will be transported to an adjacent facility (within 1/8 of a mile) for use in product manufacturing. The employees of the warehouse facility will spend a majority of their day within the office space except for the occasional need to go out into the warehouse space to receive and stock incoming shipments, or transition of these goods and materials to the adjacent facility. The layout of the warehouse space will consist of long rows of aligned storage racks and shelving - with intermediate aisles and end aisles that would be parallel with the exterior walls of the building. One side of the building will have freight car (rail) access as well as tractor-trailer access with overhead doors. As such, is the entire warehouse space considered ""regularly occupied"" space? If so, would we be required to provide ""pollutant control"" system for fork trucks moving goods and materials in and out of the freight cars and tractor-trailers? If so, would permanently installed grill or grate systems (for the fork trucks) aligned with these transition points fulfill the requirements of this credit? If the warehouse space is not considered ""regularly occupied"" space would we only be required to meet the needs of the office space? Please provide some guidance on a strategy that would be consistent with the intent of this credit." "At a minimum, you should provide entryway grates/grilles at all regular entry points for the building users, covering both the warehouse and office space. The same entryway system requirement would not apply directly to the fork truck operations; however, to be consistent with the credit intent, you should describe the measures included in the design to minimize pollutant entry into the building from these vehicles.\n\n **Updated on October 1, 2013 to clarify the entryway system requirement and to align the ruling with LI 5177.\n The project team is requesting clarification on the entryway system requirements for a warehouse space. The exterior entrances to loading docks and garages are not required to have entryway systems. Regularly used entrances from these areas into adjacent spaces in the building (typically office areas of the building) must have entryway systems." "None" "None" "LEED Interpretation" "5051" "2007-05-30" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "IEQc5: Indoor Chemical and Pollutant Source Control" "In our first floor computer server areas, we will have some workbenches where equipment is tested and repaired. Occasionally workers have to fix a connection with a soldering iron. Typically, these soldering irons have been located at each workbench for occasional and very short use. It is an industry standard practice to allow the soldering to occur at work benches for convenience and efficiency (rather than to require it be done in an enclosed room). The company\'s EHS leaders are not concerned about soldering smoke inhalation because it is very brief. Moreover, these server areas are provided with ample air changes well above even the LEED EQ 2 Increased Ventilation credit (this is needed just to keep the servers cool). However, these air changes probably don\'t provide the amount of pressure required for this credit (EQ 5). How does EQ 5 Indoor Chemical & Pollutant Source Control apply to this situation? We propose several options for addressing this, in order of difficulty for our client: 1. Do nothing. The soldering is very limited (typically just a few seconds and very infrequent), and comparable to the amount of fumes produced by typical desktop office equipment such as desktop printers (which are also exempt from the exhaust requirement). 2. Provide portable fume hoods to employees for soldering use. 3. Provide carbon filters in the air return to make sure even the small amount of fumes are cleaned from the air before it goes through a cycle. 4. Provide the soldering irons at each workbench for short use, but also provide an enclosed/exhausted room for workers to use when performing more intensive soldering activities longer than a few seconds. (This would be a large expense where square-footage is at a premium.) 5. Restrict all soldering to an enclosed/exhausted room. Please let us know which option(s) would allow us to maintain the LEED credit." "The CIR has indicated that minor computer repairs, involving minor soldering, takes place within the computer server areas and is inquiring if special IAQ control measures are required to enable compliance with the intent of EQc5. Although the soldering that takes place in the computer server areas is minor and intermittent as indicated by the CIR inquiry, there are still emissions being introduced into the air for the computer server room. The inquiry has indicated a number of options to comply with the intent and requirements of EQc5. The two options that are acceptable to satisfy the credit requirements for this specific project case are: Option 2 - Provide portable fume hoods to employees for use when field soldering components*; and Option 5 - Restrict all soldering to an enclosed room with appropriate separations, negative pressurization, and separate exhaust. *The portable fume hood must be capable of achieving the negative pressurization required for chemical use areas and must have onboard filtration media to remove generated contaminants from the air that is exhausted back into the computer server areas. The project team should/must provide manufacturer\'s documentation for the selected fume hood to confirm the performance complies with the noted requirements. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "5177" "2009-01-23" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "Our building is a 114,000 sf food processing plant, with office space on one side of the building and process spaces and warehouses on the other. In order to fulfill the intent of this credit, all copy and maintenance rooms have hard ceilings and self-closing doors, and will be exhausted sufficiently to create negative pressure. Air filtration media will provide a MERV rating of 13. Walk-off mats will be installed at all regular entry points into the building, and a cleaning service will be contracted to replace the dirty mats and clean them off-site. We are asking whether the design and cleaning program of our 16 loading bays will comply with the requirements of this credit. To prevent contaminants from entering the building, our loading bay area has been designed with a continuous pit and vertical storing system for the loading docks. We use this design because it far exceeds traditional pit set-up both for cleanliness and thermal efficiency. Such a system differs from the norm for three reasons relevant to this credit: 1) The dock doors close all the way to the dock floor when not in use, preventing dirt and debris from entering. A tight seal is made between floor and door, further hindering pollutant entry. 2) The continuous pit - a space approximately 4ft deep between warehouse floor and bay door which runs the length of the dock bay area and is 18 inches lower than the warehouse floor - serves as a catch basin for dust or particulates coming into the building and allows for easy routine cleaning. 3) Vertical storing dock leveler design further supports easy routine pit cleaning and wash downs by remaining out of the way when not in use. We believe that the innovative design of our loading bays - coupled with the planned stringent cleaning program of this food-grade manufacturing plant - meets the intent of credit EQ 5. Please advise." "The project team is asking whether providing a continuous pit in the loading dock would meet the entryway system requirements of the credit. As described in this CIR, the loading dock entryways into the warehouse do not qualify as regular entry points for building users and thus do not need to be provided with entryway systems. The strategies employed by the project team to reduce indoor chemical and pollutant sources are commendable and encouraged but they are not required by this credit.\n\n **Update October 1, 2013: Applicable credits have been updated." "None" "None" "X" "LEED Interpretation" "5266" "2007-05-30" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell, Schools - New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "Background: Our project is a high rise building with street level entrances and below grade level building entrances from an inter-modal transportation hall, public transportation systems, and directly from other buildings. This inter-modal transportation hall includes an indoor shopping / amenity arcade, which connects a wide range of retail shops and public transportation (PATH, MTA). This inter-modal transportation network (which is not included in the scope of Tower One) will be a fully enclosed space with conditioned and filtered air, that will also be clean and maintained. The distance traveled from the closest outdoor entry point through the inter-modal transportation hall to the building concourse level entrance is over 500 feet Project Design Approach for Applying EQc5: The entire project design does meet and exceed the air filtration, partitioning, and exhaust requirements of EQc5. The street level entryways designs do have permanent walk off systems that meet the requirements in EQc5. Conclusion and CIR: The concourse entrances will be regular entry points to the building. The concourse entrances are accessed via a conditioned, filtered, clean indoor space and as such it is a significantly cleaner adjacent environment than the street. We are requesting confirmation of our interpretation that the concourse entrances are not ""entryways that are directly connected to the out doors"" as stated in the EQc5 requirement for the application of walk off systems." "The requirements of EQc5 apply only to entryways that are directly connected to the outdoors. The connection between concourses and interior space does not apply to the requirements of this credit. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "5460" "2005-02-07" "New Construction" "IEQc5: Indoor Chemical and Pollutant Source Control" "A CIR ruling from 1/18/2005 (EQc5) stated that "" [i]f there is a janitorial / housekeeping room in the building then it must meet the criteria for this credit by providing the ventilation requirements and deck-to-deck partitions,"" even if the building adhered to a green housekeeping policy that required only GreenSeal-compliant cleaning materials to be used in the building. In contrast, a CIR ruling from 6/24/2003 (also EQc5), stated that ""The green housekeeping program is commendable but not directly applicable to credit achievement. However, because of this program, there does not appear to be chemical use in this building that would require a separate drainage system, and thus such a system will not be required."" Logical consistency dictates that if no drainage system is required, then no ventilation and partition requirement would be required either. We presume that simply calling the room where green housekeeping chemicals are stored a \'janitorial closet\' couldn\'t trigger the requirements -- we could simply rename the room and then our facts would be the same as the school in the 6/24/2003 ruling. Please clarify whether the 1/18/2005 ruling intended to overrule the 6/24/2003 ruling, or alternatively, please explain what would appear to be a logical inconsistency (no drains are required but ventilation and partitions are required?), or please revise the 1/18/2005 ruling to confirm that if we are using a green housekeeping policy (all GreenSeal-compliant), that this eliminates the requirement for ventilation/partitions/drainage to meet the credit intent. Also please respond to the question in the 1/18/2005 CIR whether, absent a requirement for partitions/ventilation/drains, the credit could be achieved simply with walkoff mats and entryway systems. " "The 1/18/2005 ruling is NOT intended to overrule the 6/24/2003 ruling. Two separate issues are being addressed by these two CIRs. The first one is dealing with the need for chemical mixing areas to have segregated areas with deck to deck partitions and separate outside exhaust. The second one is to do with appropriate disposal of liquid waste in spaces where water and chemical concentrate mixing occurs. In both cases, the CIRs are consistent with the Rating System and Reference Guide requirements. Green housekeeping products still contain chemicals which need to be contained and dealt with per the credit requirements (albeit at lower levels). Therefore, even if the project only uses Green Seal compliant cleaning products, it would still need to meet the criteria of providing the ventilation requirements and deck-to-deck partitions. This is also noted in the CIR ruling dated 1/24/2005 which states that ""Green housekeeping cleaners contain chemicals that need to be addressed."" This credit does NOT differentiate between rooms that store Green-Seal-compliant cleaning products and those that store industry standard products. The need for drains plumbed for appropriate disposal of liquid waste is a separate issue from the ventilation requirements. As noted in CIR ruling dated 2/18/2002, sinks that dispose of chemicals, such as detergents, which are approved by the local water treatment facility, can be part of a conventional sanitary drainage system. If greywater is being directed to re-use for irrigation or uses or to a natural wastewater treatment system, then separate plumbing would be required for disposal of conventional cleaning agents. Projects should check with their local treatment facilities to confirm what the jurisdiction requirements are for chemical disposal. In response to the question raised in CIR ruling dated 1/18/2005, a project MAY be able to meet this requirement by only providing permanent walkoff mats and entryway systems if NO chemicals (of any type) are mixed and stored on-site. If any chemicals are mixed or stored on-site, then the criteria for containment, ventilation and plumbing will apply.\n\n **Update October 1, 2013: Applicable credits have been updated." "None" "None" "X" "Regional ACP" "100001903" "2014-07-01" "New Construction, Core and Shell, Schools - New Construction, Retail - New Construction, Commercial Interiors, Retail - Commercial Interiors" "None" "None" "X" "East Asia" "LEED FOR BUILDING DESIGN AND CONSTRUCTION 2009; LEED FOR INTERIOR DESIGN AND CONSTRUCTION 2009; LEED BD+C: RETAIL 2009; LEED ID+C: RETAIL 2009" "LEED BD+C: 511; LEED ID+C: 359; LEED BD+C-Retail: 135; LEED ID+C Retail 127" "Requirements" "The third new bullet should read: “Projects in East Asia may use filtration media classified as high efficiency (高中效过滤器) or higher as defined by Chinese standard GB/T 14295-2008 (空气过滤器).”"