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ASHRAE 62.1 filter requirement "minimum volumetric ozone removal efficiency of 40% filter"

NC-v4 EQp1:Minimum indoor air quality performance
posted by  John Covello  on 

I am researching HVAC filter manufacturers and none so far seem to be able to provide me documentation for a carbon filter that meet the minimum volumetric ozone removal efficiency of 40%.

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ASHRAE 62.1 requirement minimum volumetric ozone removal efficiency of 40% filter

CI-v4 EQp1:Minimum indoor air quality performance
posted by  John Covello  on 

Hello,

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Stormwater Treatment Offsite by Municipality

NC-v4 WEp1:Outdoor water use reduction
posted by  Maya Facciolo  on 

Our project is located within the Fresno Metropolitan Flood Control District (FMFCD) in California, which provides regional stormwater treatment and discourages on-site water quality treatment.

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Luminaries inside parking cover are exterior lightings?

NC-v4 SSc6:Light pollution reduction
posted by  Thomas Tan  on 

Dear All,

I have a large parking structure (on grade) located inside the project site.

2
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Heather DeGrella
Sustainable Design Director, Associate Principal
Opsis Architecture
LEEDuser Premium Member
54 thumbs up
Wed Jan 14, 2026, 8:20 pm

Pilot Credit INpc155

Pilot-Credits INpc155:Design for Indoor Air Quality and Infection Control
posted by  Roxanne Button  on 

Has anyone attempted this Pilot Credit yet?  Our project is a college science building which was under construction during the COVID-19 shutdown, and already incoporates most of the requiremen

16
Wed Jan 14, 2026, 7:21 am
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Applicability of Lighting Controls in Warehouse Areas

Warehouses-NC-v4.1 EQc5:Thermal Comfort
posted by  Mel K  on 

Hello, 

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REACH compliance

NC-v4 MRc4:Building product disclosure and optimization - material ingredients
posted by  Charline SEYTIER  on 

Hello,

11
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Tristan Roberts
Founder & Community Director
Metricorps
LEEDuser Expert
7780 thumbs up
Mon Jan 12, 2026, 5:34 pm
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EQ CREDIT: INTERIOR LIGHTING

NC-v4 EQc6:Interior lighting
posted by  Philipp La  on 

Hi Every one

6
Mon Jan 12, 2026, 4:10 pm
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Exterior Lighting for LEED ID+C

CI-v4.1 EAc2:Optimize Energy Performance
posted by  Alvin Michael Velasco  on 

Hi.. We are working on a LEED CI project where 100% of the building spaces are part of the LEED scope. In this scenario, are exterior lightings required to be included in the energy model?

1
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up
Mon Jan 12, 2026, 4:00 pm
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Change to CxA Scope

NC-v4 EAp1:Fundamental commissioning and verification
posted by  Adrienne Franz  on 

Hello,

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