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DRAFT February 5, 1993 INDOOR ENVIRONrSENTAL QUALITY IN NON-INDUSTRIAL WORK ENVIRONM:'P1TS Authority and 8ignatitre This document was prepared under the direction of . Pursuant to sections 6(b) and 8(c): and 8(g)(2)~ of the Act, OSFiAhereby amends 29 CFR part 1910 by adding a new S 1910. as set forth below. List of 8ubjects in 29 C?R Part 1930 Sndoor Environmental Quality, Occupational Safety and Health. is hereby amended as follo-as: pA1RT 1. The authority citation for is amended by adding the following citation at the end. (Cit-' ation which precedes asterisk indicates .) i+tldorliY 2. . 5 1910. Indoor Enviroamental Quality. [a) ScoFe =and anoLication. (1) This sectiorn shall apply to all employers and gmployees under oSry:A jurisdiction. :'his standar3 applies to all building owners and employers with non- industrial work environments. This includes public and private buildings, schools, healthcare facilities, offices and commercial establishsents. The scope of this standard includes non- 'industrial vork environments that are part of industrial worksites (i.e., an office, cafeteria, or break room located at a manufacturing facility). [Adopted in part from Washington State FAQ draft]. DRAFT: DO NOT CITE OR QUOTE i 7

DRAFT sbl Def_initions -- February 5, 1993 Merican Society of Hea ~~j'r g. Retriaeratina and Air- ccnditioninc Envineers iASH'RAE) means the corisensus standard of the society which is a professional organization composed of national and international members, associated societies, and public views. The standard concerning the ventilation for acceptable indoor air quality is ASIRAE 62-1989 and the standard concerning environmental conditions for human occupancy is A*1SIjASHRAE 55-1981. AuthorizedPersae means any person authorized by the building owner and required by work duties to be present in a non-industrial work environment. ga~ means the employer creating a smokefree work environment by banning all indoor smoking of tobacco products. guildina otmer means the person(s) who has legal rights and obligations for any public or private building. The building owner may delegate responsibility•for building operation and maintenance activities, in writing, to an agent (e.g., property manager, facility manager), lease holder, or other person(s) who have control of the worksite. Desia ated smflkina azea means an area separated from common work and congregation areas that has dedicated exhaust ventilation. High-efficiency particulate air (AEPA!. filter means a filter capable of trapping and retaining at least 99.97 percent of 0.3 DRAFT: DO NOT CITE OR QUOTE N 2 C W . '".~

DgAYT February 5, 1993 micrometer diameter mono-disperse particles. RyAE system means the collective components of t.he heating, ventilation and air-conditioning system. Mainstream smoke means the smoke breathed in by a person actively smoking a tobacco product. Non•industria vork environment means an indoor or enclosed occupied space such as, but not limited to, offices, educational facilities, commercial establishments, and heaithcare facilities. It does not include areas such as manufacturing and product'.on facilities, residences, vehicles, building construction worY.sites (where the building is not occupied by employees covered under this standard), agricultural operations, and offices where employees are directly involved in production or manufacturing processes (e.g., small quality control office where employees move frequently in and out to production areas). oif ice areas, cafeterias, and break rooms located at a manufacturinq or production facility where employees are nct directly involved in production or manufacturing processes are included in the scope of this standard. gassive tobacco smoke means the product of tobacco combustion, including sidestrean smoke, exhaled mainstream smoke, vapors that escape through the cigarette or eiqar wrapping, and exhaled mainstream smoke. Zt is commonly referred to as environmental tobacco smoke, secondary smoks, or.involuntary smoke. ~ DRAFT: DO NOT CITE OR QUOTE ~ 3 C4

DRAFI, Februaz'X 5, 1993 si'de tream smoke means the smoke emitted from the burning end of the tobacco product. DRAFT: DO NOT CITE OR QUOTE (0

DRAFT February 5, 1993 (Preliminary gross provisions for IAQ standard: ] (c). System Do umentation. The building owner shall provide the following HVAC system information upon request to the employer or the (1). The latest HVAC design, operation and maintenance documentation if available, including dates of building construction, HVAe system installation, commissioning, or most recent HVAC modification. (2). A description of the HVAC system including type of HVAC system (VAV, dual duct, multi-zone, heat pump, etc...), major components, current total air capacity (in C:M), current and minimum outside air supply rates to occupied areas (in CFM), design occupant density loads, air filter system, filter efficiency, temperature and humidity design criteria, operation and m3intenance procedure, and any mechanical systems desiqned for local exhaust. [d1 Svstetn Oceration. (1) The HVAC system shall be maintaiaed and operated to provide at +east the outdoor air ventilation rate (based on actual occupancy) required by the applicable building code, mechanical code, or ventilation and indoor air quality code in effect at the time the permit covering the building AvAC system was issued. (2) Heating systems shall be operated to maintain the following conditions: DRAFT: DO NOT CITE OR QUOTE O 5 0 W 0

DRAFT February 5, 1993 i) Temperatures no lower than 68°F and tio higher than 74°F in winter. ii) Where mechanical cooling is provide, these systems shall be oped ated to maintain temperatures no higher than 8o°F and no lower than 73°F in summer. iii) Relative humidity shall be maintained below so8 in buildings with mechanical cooling systems to prevent growth of biological contamihants. • (3) The KVAC system must be operated continuously during all scheduled work shifts (except during emergency reprirs) and during scheduled naintenance and calibration. (4) HVAC operation specifications and detailed maintenance guidance shall be provide to the HVAC operation and maintenance personnel or contractor by the building os,rner. IIp-to-date HvAC system operation procedures shall be posted cn or near the equipment, or in a procedural manual/central record located at the facility. ' (5)~ Buildings without AvAC systems shall maintain proper operation of operable exterior openirg areas (if allowed.ir. lieu of mechanical ventilation) required by the applicable building code in effect at the time the building permit was issued. (6) Zmployers shall maintain physical equipment-rooms in clean condition, especially if rooms are part of the air exchange plenum of the HV'A:C system. i) No storage of chemicals or other aqents that could, if DRAFT: Do NOT CITE OR QUOTE © 6 . N tt

DRAPT February 5, _993 spilled, be taken up by the air system and transported to the rest of the building. ii) Asbestos, if friable, should be encapsulated so as not to be taken up by the air stream and-distributed to the of f ices down stream. (7) Carbon dioxide (CO=) levels i+ill be kept below 6S0 ppm (e.g., used as an indicator of adequate ventilation). (8) When the supply of air is reduccd during times the space is occupied (e.g., in variable air volume systens), provision shall be made to maintain acceptable indoor air quality throughout the occupied zone through: Source reduction, ii) Maintenance of CO2 levels at or below 6SO ppm, and iii) Expeditious use of maintenance and housekeeping chemicals. ' (9) i) Fuel-burning appliances, including fireplaces located indoors, shall be provided with suyficient air for combustion and adequate removal of combustion products. ii) when infiltration supplies all or part of the . combustion air, the supply rate of air shall be demonstrable. iii) The operatiors of clothes dryers and exhaust fans may require introduction of additional makeup air to avoid interference with fuel-burning appliances. iv) Combustion system, kitchen, bathroom, and clothes dryer DRA!'T: DO NOT CITE OR QUOTE 7

DRAFT February 5, 1993 vents shall not be exhausted into attics, crawlspaces, or basements. (10) To remove particulate contaminants, air filters or dust collectors shall be used. i) Dust collec~tors, not air filters, should be used where the dust loading equals or exceeds 10 mg/ms (4 qrains/l000 ft=) . ii) Air filters and dust collectors shall be selected for the particle size and loading encountered. iii) When utilized, these filters must be maintained acccrdinq to manufacturer's specifications. (1].) Relative humidity in habitable spaces preferably should be maintained between 30% and 60% relative humidity to minimize growth of allergenic or pathogenic organisms. (12) Air-handling unit conder.sata pans shall be maintained for self-drainage to preclude the buildup of microbial slime. 'i) Periodic in-situ cleaning of cooling coils and condensate pans shall be conducted. ii): Air-handlinq and fan coil units shall be easily accessible for inspection and preventive mainter.ance. (sh ?SR~'~ ANCE. a (1) The building owner shall identify a person(s) (e.g., individual, contractor, company, aqency, or department) to be responsible for the operation and maintenance of.the AVAC system. The person(s) identified for these tasks shall be knowledgeable DRAFT: DO NOT CITE OR QUOTE . ~ N W ~ N . ~ 8

DRAFT February 5, 1993 in the principles of HvAC system operation and maintenance, HVAC testing procedures, the requirements of this standard, and the specific xVAC system service the building or office. [nonmandatory appendix outlining levels of knowledqe required, - courses available.] (2) The building owner shall cause (ensure that) the HVAC system components (are) to be inspected, adjnsted, cleaned, calibrated, or replaced as ipecified in the guidance required in section d4. These components include, but are not limited to, air filters and f ilter seals, drip pans and drainage piping, heatin,q and cooling coils, supply/exhaust vents and louvers, dampers and damper actuators, fan motor belts, humidifiers, air cleaners, thermostats, control devices, and scnsors. i) In addition, the employer shall cause (ensure that) adequate ventilation system inspection and subsequent maintenance shall include system balancing once a year and semiannual RvAC inspection and cleaning. (3) The building owner shall ensure that inspections and maintenance of the HVAC system are performed by the designated person(s) as specified in sections ei and e2. i) The building owner shall ensure that maintenance system inspections and repairs are documentsd in a log and retained for at least three •years. ii) The inspection and maintenance log shall include the specific actions taken, the name and affiliation of the DRAFT: DO NOT CITF OR QUOTE 9 9

DRAFT February 5, 1993 individual performing the work, and the date of the inspection or maintenance activity. iii) The inspection and maintenance log shall be available on request to -the employer, employee representative, and the (4) Personal Protective Equipment required to safely perform maintenance procedures [Construction Industry 1926; Subpart E--Personal Protective and Life Saving Equipment]: i) Head Protection (1926.100 Read Protection) Employees working in areas where there is a possible danger of head injury from impact, or from falling or flying objects, or from electrical shock and burns, shall be protected by protective helmets. (a) Helmets for the protection of employees against impact and penetration of falling and flying objects shall meet the specifications contained in American Nation4l Standards Instituto, Z89.1-1969, Safety Requir aments for Industrial Health Protection. (b) Helmets for the head protection of employees exposed to high voltage electrical shock and burns ; shall meet the specifications contained in American Itational Standards Institute, Z89.2-1971. ii) Hearing Protection. Wherever it is not feasible to reduce the noise levels or duration of exposures to those specified in Table D-2, Permissible Noise Exposures, i~S O DRA,FT : DO NOT CITE OR QUOTE 2V' W 10 9