Air concept: A10 COMBUSTION MINIMIZATION and A11 SOURCE SEPARATION and A12 AIR FILTRATION and A13 ENHANCED SUPPLY AIR and A14 MICROBE AND MOLD CONTROL

A10 COMBUSTION MINIMIZATION( OP)(1PT)

• Reduce exposure to combustion-related air pollution from heating and transportation sources

Part 1: manage combustion (1 point) options

Option1: appliance and heater combustion ban

Option 1: Appliance and heater combustion ban

A, Combustion-based fireplace,stove,space heaters,ranges,and oven are used in occupiable spaces

Part 2: Low-emission combustion sources

Option 2: Low-emission combustion sources

• Equipment used in the project for heating,cooling,water heating, process heating or power generation meet:

1. Comply with california south coast air quaility managment distrct rules for pollution.

2. Are eletric

3. Are supplied by distrct heating or cooling

Option 3: Engine exhaust reduction

1. Vehicle engine idling for more than 30 sec is prohibited in all pick up,drop off and parking area at the building site controlled by the projecy. “No idling” signage

A11 SOURCE SEPARATION (OP) (1PT)

• Preserve indoor air quality and maximize olfactory comfort in occupied spaces through the isolation and proper ventilation or indoor pollution sources and chemical storage area.

Part 1: Manage pollution and exhaust (1point)

1. Meet one of the following: 

1. Are separated from all adjacent regularly occupied spaces with self-closing doors and vestibules

2. Are negativity pressurized compared with adjacent regularly occupied spaces

      B. Utlilize exhaust fans such that return air is vented outdoors and not recirculated

A12 AIR FILTRATION (OP) (1 PT)

• Reduce indoor and outdoor airborne contaminants thorugh air filtration( 1 pt)

Part 1: implement particle filtration(1pt)

Option 1: filtration levels

1. Media filters are used in ventilation system to filer outdoor air supplied to the space,accordance with the threshold:

CHART

Part 2: filter maintenance

1. Evidence that the filter has been replaced according to the manufacture recommendation is submitted annually.

A13 ENHANCED SUPPLY AIR (OP)(3PT)

• Mitigate risks from indoor contamination and pollution sources, such as infectious disease particles and volatile organic compounds (VOC)

Part 1: improve supply air (1 point) Options

Option 1: Air supply requirements

Option2: filter maintenance

Option 1: Air supply requirements

1. 100% outdoor air

2. Partially recirculated air which has been treated with the 1. Activated carbon filter 2. At least one of the following: (i) Media filter with PM_2.5 removal of ≥90% (e.g., MERV 14 or F8), (ii) UVGI within the ducts to treat the moving air, or (iii) upper-room UVGI.

3. Partially recircualted air and include air purfication/cleaning device within the space: 1. Activated carbon filter 2. Media filter with PM_2.5 removal of ≥90% (e.g., MERV 14 or F8) or UVGI.

Option 2: filter maintenance

1. Evidence that the filter or device has been replaced or maintained according to the manufacturer's recommendation. 

Part 2: Provide clean airflow rates for control of infectious aerosols ( 2points) Options

Option 1: regular air flow operation

Option2: Operation under infectious disease management mode

Option 1: Regular air flow operation

• ASHRAE 241-2023 Table 5-1 Equivalent Clean Airflow Rates (Section 6 - Clean Airflow Rate Equation or Appendix C - In-place Modeling Method).¹⁷

• 5 Equivalent Air Changes per hour (5 e/ACH) calculated in accordance with Appendix A1.¹⁸

Option 2: Operation under infectious disease management mode

1. Mechanical system is capable of providing all regularly occupied spaces with clean airflow rates for infection risk management:

-ASHRAE 241-2023 Table 5-1 Equivalent Clean Airflow Rates (Section 6 - Clean Airflow Rate Equation or Appendix C - In-place Modeling Method).¹⁷

-5 Equivalent Air Changes per hour (5 e/ACH) calculated in accordance with Appendix A1.¹⁸

2. Project has an operational plan for infection risk management mode(IRMM):

             The conditions under which the IRMM will be activated.

• The engineering controls (e.g., changes in ventilation or air treatment) and non-engineering controls (e.g., changes in occupancy) that will be utilized to achieve the target clean airflow rates.

• The operational and maintenance procedures in place to implement target clean airflow rates within 48-hours of the decision to activate IRMM.

• An inventory of HVAC system consumables (e.g., filters, adsorption media, UV bulbs) that is updated when significant equipment modifications have been implemented or after replacement consumables have been utilized.

• A requirement that there is at least one set of replacement consumables available to install during IRMM.

A14 MICROBE AND MOLD CONTROL(OP)(1PT)

-reduce mold and bacteria growth within the building mechanical system

Option 1: UV system design

1. All central air handling unit ultraviolet lamps to irradiate the surface of the cooling coils and drain pans

2. All cooling coils and drain pans associated with fan coil united: are irradiated by ultraviolet lamps and may be opened for inspection for mold growth and cleaned if necessary

Option 2: UV system maintenance and inspection

1. Evidence that the ultraviolet lamps have been replaced or maintained

2. All cooling coils without ultraviolet lamps are sinpected on a quarterly basis for mold growth and cleaned