Warehouses-NC-v4 EQc4: Indoor air quality assessment

Replace the text under Step 1. Determine Air-Testing Location with the following:

"Determine where in the building IAQ testing will be performed.

First, perform an initial analysis to identify potential locations to test in the building. Consider locations that are most representative of the building space, and where occupants will normally spend their time.
• Identify at least one location per ventilation system. Include locations that represent the worst-case zones where the highest concentrations of contaminants of concern are likely to occur.
• Identify at least one location per floor of the building.
• Identify at least one location per space type. In most cases, only regularly occupied spaces need to be included. Additionally, for each space type identified, if the air is not well mixed or contaminants are not expected to be uniform throughout the space include more than one location in the space for testing.

Next, determine whether a sampling protocol can be used to reduce the number of testing locations identified in the initial analysis. A sampling protocol is particularly useful if the project has many floors or a large number of ventilation systems.
• Identify and group spaces (or floors) that are very similar in their construction, finishes, configuration, size, and HVAC systems.
• Randomly select one out of every seven very similar spaces to include in the testing. In addition, for buildings with a large number of identical spaces (more than 21 spaces in a sample group), test a minimum of three spaces in the sample group."

Under Step 2. Perform Test, add the following to the first paragraph, after the second sentence:
"If a test fails and a sampling protocol was used, conduct re-testing to assess whether the failure is unique or the rest of the spaces are likely to have similar failings."

Modify the SI unit conversions:
Path 1, change 4 267 140 liters per second of outdoor air per square meter' to '4 267 140 liters of outdoor air per square meter'.
Path 2, change '1 066 260 liters per second of outdoor air per square meter' to '1 066 260 liters of outdoor air per square meter'.
Path 2, change ‘1.5 liters of outside air per second per square meter’ to ‘1.5 liters per second per square meter of outdoor air’.
Path 2, change ‘4 270 cubic meters of outdoor air per square meter’ to ‘4 267 140 liters of outdoor air per square meter’.

Behind the intent, in third paragraph, add SI for airflow rate so reads ‘0.7 cubic feet per minute per square foot (3.55 liters per second per square meter)’

Behind the intent image/calculation change ‘4 294 080 lps’ to ‘4 294 080 l’

Equation 1, change ‘14,000 cfm’ to ‘14,000 ft3/ft2’ and ‘4 267 140 lps’ to ‘4 267 140 l/m2’
Equation 2, change ‘3,500 cfm of outdoor air’ to ‘3,500 ft3/ft2’ and ‘1 066 260 lps’ to 1 066 260 l/m2’
Equation 3, change ’10,500 cfm’ to ’10,500 ft3/ft2’ and 3 200 880 lps’ to ‘3 200 880 l/m2’
Equation ,4 change ‘14,000 cfm’ to ‘14,000 ft3/ft2’ and ‘4 267 140 lps’ to ‘4 267 140 l/m2’

Table 2, change column header to Total Outdoor Air Required (ft3/ft2)
Table 3, change column header to Total Outdoor Air Required (l/m2)
Table 4, change column header to ‘Total outdoor air required before occupancy (cfm/ft2)' and column header to ‘Total outdoor air required to complete flush-out (ft3/ft2),
and modify volume of air required to complete flush out (ft3) if applicable.
Table 5, change column header from ‘Total outdoor air required before occupancy (l/m2)' and column header to ‘Total outdoor air required to complete flush-out (l/m2).

**updated July 8 2017 to fix SI unit conversion for path 2 ('4 267 140 liters of outdoor air per square meter').

**updated July 2, 2018:
"Under Further explanation, examples, Tables 2, 3, 4, & 5 change column header from "net office area" to "gross floor area"

Modify the SI unit conversions:
Path 1, change 4 267 140 liters per second of outdoor air per square meter' to '4 267 140 liters of outdoor air per square meter'.
Path 2, change '1 066 260 liters per second of outdoor air per square meter' to '1 066 260 liters of outdoor air per square meter'.
Path 2, change ‘1.5 liters of outside air per second per square meter’ to ‘1.5 liters per second per square meter of outdoor air’.
Path 2, change ‘4 270 cubic meters of outdoor air per square meter’ to ‘4 267 140 liters of outdoor air per square meter’.

Behind the intent, in third paragraph, add SI for airflow rate so reads ‘0.7 cubic feet per minute per square foot (3.55 liters per second per square meter)’

Behind the intent image/calculation change ‘4 294 080 lps’ to ‘4 294 080 l’

Equation 1, change ‘14,000 cfm’ to ‘14,000 ft3/ft2’ and ‘4 267 140 lps’ to ‘4 267 140 l/m2’
Equation 2, change ‘3,500 cfm of outdoor air’ to ‘3,500 ft3/ft2’ and ‘1 066 260 lps’ to 1 066 260 l/m2’
Equation 3, change ’10,500 cfm’ to ’10,500 ft3/ft2’ and 3 200 880 lps’ to ‘3 200 880 l/m2’
Equation ,4 change ‘14,000 cfm’ to ‘14,000 ft3/ft2’ and ‘4 267 140 lps’ to ‘4 267 140 l/m2’

Table 2, change column header to Total Outdoor Air Required (ft3/ft2)
Table 3, change column header to Total Outdoor Air Required (l/m2)
Table 4, change column header to ‘Total outdoor air required before occupancy (cfm/ft2)' and column header to ‘Total outdoor air required to complete flush-out (ft3/ft2),
and modify volume of air required to complete flush out (ft3) if applicable.
Table 5, change column header from ‘Total outdoor air required before occupancy (l/m2)' and column header to ‘Total outdoor air required to complete flush-out (l/m2).

**updated July 8 2017 to fix SI unit conversion for path 2 ('4 267 140 liters of outdoor air per square meter').

**updated July 2, 2018:
"Under Further explanation, examples, Tables 2, 3, 4, & 5 change column header from "net office area" to "gross floor area"

Revise Table 1 as follows:

1. Remove TO-15 from "ASTM and U.S. EPA methods" column
2. Add the full list of target chemicals, except formaldehyde, from CDPH Standard Method v1.1 in place of the single row (Target chemicals listed in CDPH Standard Method v1.1, Table 4.1, except formaldehyde) and revise the Maximum concentrations from CDPH Standard Method v1.1 2010, Allowable Concentrations, Table 4-1 with the Cal/EPA OEHHA full CREL in effect on June 2014.
3. reformat table for clarity

Step 3, revise last bullet to "Complete testing and balancing of the HVAC system before testing."
Step 4, revise first sentence to "Thoroughly clean the building, including the ductwork, before testing or beginning a flush-out." revise second bullet to "Consider using low-emitting cleaning products...", and revise third bullet to "consider using vacuum cleaners with HEPA..."

In Step 2, replace the last bullet with the following: Testing must be performed by an appropriately accredited professional, using the approved test methods. The accredited professional should determine the sampling time based on the test method, maximum allowable concentration, and expert judgment.

In Changes from LEED 2009, add a final bullet: There is no longer a 4-hour sampling time requirement in Option 2.

Under Option 1, Path 2, removed checkbox, "New filtration media were installed before the flush-out began."