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EXHIBIT 1 C ASH RAE 62-73R (ANSI B 194.1) Draft Revision 1, , 1. FOR REFERENCE ONLY 2. NOT FOR COMMENT 3. PUBLIC REVIEW ENDED 4 . ................................................ Standards for Ventilation Required for Minimn m Aeceptabie Indoor Air Quality (formerly r "Standards for Natural and Mechanical Ventilation") Draft Revision January 15, 1980 ASHRAE Standards are updated on a five-year cycle; the date following the Standard number is the year of approval. The latest copies may be purchased from the ASHRAE Circulation Sales Department, 345 East 47th Street, New York„N.Y. 10017. 03'735338 The amcrican Society ofHaating,ReNgcrating. and Air-Cooditioning Enginears,Inc. 345 East 47dh Street, New York, N:Y:10017

/kP,1FR~ICAN~! S~OCIETY~ OF HFIi'TI~~G~,~ R'~~FK~IGER~~/I~Ti~~'P~~~G~ l~f~~J!D~~ AIR-CON~DITIO~NING ENGINFE(RS, I~~NC~~. Charles T. Zegers Manrr-:r, Standards (212) 644-7946 UNITEO ENGINEERING CENTER, 345 EAST 47th STREET New York, N. Y. 10017 (212) 6441953 . TO WHOM IT MAY CONCERN Subject: Your order for a Review Draft of ASfiPAE Revised Standard 62-73R "Standards for Ventilation Required for Minimum Acceptable Indoor Air Quality" (Formerly "Standardsfor Natural and Mechanical Ventilation") Thank you for participating as a reviewer of the above proposed draft standard. Enclosed is a copy of the draft and~below are a few suggestions to assist you in your review: 1. Read through the entire draft standard. 2. Look at the sections, do they follow logically? 3. Are there any erroneous statements, typos, etc? 4. Do you know of a better method of testing or rating? 5. Are there any sections which you feel are incomplete, need expansion or reduction? Do you have any recommendations whic4would improve the standard? If there are tables, figures, or charts -- do they make sense? Are they useable? The Project Committee welcomes all constructive criticism. Please be sure your comments are clearly printed or typed on a separate sheet of paper and identified with your name, affiliation, address and phone number. Do not send in a marked- up copy of the standard. Background documents to substantiate your comments should be included. Upon receipt of your comments by the Standards Department, they will be acknowledged and, after the close of public review, will be sent to the Project Committee for disposition. O W Please be advised that the closing of the Public Review is June 30, 198&. All .1 comments should be submitted by this date. Sincerely, . An International Organization . MEMBER, Engineers Council for Professional' Developmen[ CTZ/tjf

C FOR,~~EW~O~F3~D C When Standard 62-73 (1)' was published, a comprehensive rnethod~ of establ'ishing ventilation rates -was made available. That standard emphasized ventilation air quantities in terms of volumetric air flow rates per person~ and introduced the concept of "acceptable outdoor air" for ventilation purposes. It also specified the conditions under which the outdoor air quality could be increased through application of air cleaning technology. V entilation rates in Standard 62-73 were specified as minimum and recornmend~ed values. The recommended values generally exceeded the rnuninium values by factors of 1.5 to 2. ASPIR-AE Standard 9'0-75 (2) used minirnum values for energy conservation purposes. This constraint and new developments in air quality control dictated that Standard 62-73 be revised. The revilsed Standard includes a ventilation rate procedure which in- directly controls indoor air quality and a new procedure to permit direct control of the indoor air quality. The latter miethod may see increasing use in the future, since it gives the engineer or designer more freedom to achieve the objective of this Standard and to encourage innovative solutions. The objective of this revised Standard is to provide safe, healthful, and' comfortable indoor environments by using materials and methods that optimize efficiency of energy utilization. Therefore, an interd'isciplinary committee of n inee-rs, Fhksicians, chemists azld psychologis swas appointed to revise Strundard 62-73. i ~

C . C Section 1.0 Section 2.0 Section 3. 0 Section 4.0 Section 5.0 Section 6.0 Secti'lon 6. 1 Section 6. 1. 1 Section 6.1. 2 Section 6. 1. 3 Section 6. 1.4 S ection 6. 1. 5 Section 6.2 Section 6.2. 1 Section 6. 2. 2 Section 7.0 TABLE OF CONTENTS Pace FOREWORD TABLE OF CONTEIN'TSPUiRPOSE i ii 1 SCOPE 1 DEFINITIOhS CLASSIFICATIONS I 4 SYSTEMS & EQUIPIVIiENT' 5 PROCEDURE 6 Ventilation Rate Procedure 7 A cceptable Outdoor A ir Outdoor Air Treatment 10 Mini~mumV Ventilation Requiremen 10 Recirculation Criteria 25 Transient Effects 26 Indoor _Air Quality Procedure. Ob i ective IWI e asur em ent Subjective Evaluation A zq 31 REFERENCES APPENDICES ii : N

C SECTION 1. PUR'POSB' C To specify indoor air quality and minimum ventilation rates which Will ,. be acceptable to human occupants a.nd' ~,Jill not impair health. SECTION 2. SCOPE This standard applies to all indoor or enclosed' spaces which people rna~• occupy. It does not apply to spaces where other applicable standards and, requirernents dictate larger amounts of ventilation air than this standard. Release of heat and moisture in residential kitchens and bathrooms, locker rooms, swimming pools, anal saunlas is included in the scope of this standard. SECTION 3. DEFINITIONS (SEE FIGURE 1) 3. 1 ACCEPTABLE AIR QUALITY: ambient air in which there are no knotivn contamirants at harmfuli concentratlio:ns and «rit'h which a substan- tial majority (usually 80°ri0) of the people eapos ed do not express dis- satisfactiofi. 3. 2 AIR CLEANER: a device used to remove airborne impurities such, as dusts, gases, vapors, fumes, and smoke. 3. 3 AIR CONDITIONING: the process of treating air to meet the requir humid ements of a conditio ity, cleanliness, and ned space by controlling, its temperature, distributionl. O tJ .~ W U1 3. 4 AIR, AMB'IE'NT': the air surrounding an object. .C` IV 3. 5 AIR, EXHAUST: air removed from a space and not' reused therein. 3. 6 AIR, MAKEUP: outdoor air supplied to replace exhaust air and exfiltration. 1

• EXHAUST AIR CONDITIONING OTHER UNIT ENERGY AIR CLEANER AIR CLEANER LOCATION RECOVERY LOCATION r---, U N I T r---i OUTDOOR AIR ~ (MAKEUP AIR) I + ALTERNAT€ PATHS FOR RECIRCULATED AIR INFILTRATION OTHER ~ ! AIR CLEANER LOCATION r-----i f -1 i -~--~SUPPLY AIR VENTILATING AIR OTHER AIR CLEANER LocATIONS- rL--~~/ L~-.-.~...~ I I CONDITIONED I SPACE I . ~ ~ LOCAL VENTILATION L--~ ~-- LOCAL ~ ~~-t~Ar,€Ur --i i-- AIR LOCAL i~EXlII',UST ,*.-EX,FILTnr1T 10 tl GENERAL 4 EXHAUST Figure 1. Ventilatian System E~':aEf.EO RETURN AIR 1 ~

l C 3.7 AIR, OUTDOOR: air ta':en from the e:l~ternal atmosphere and, therefore, not previou~sliy circul'ated' throug}i the system. 3.8 AIR, RECIRCULATED: air removed from the conditioned space and intended for reuse as supply air. 3. 9 AIR, RETURN: air removed from a space to be then recirculated or e:,:hausted. 3. 10 AIR, SUPPLY: that air delivered to the conditioned space and used' for ventilation, heatirng, cooling, hul.Tnidification or dehurnildifieation. 3. 11 AIR, VENTILATION: that portion of supply air which is outidoor air plus any recirculated air that has been treated for the purpose of maintaining acceptable indoor air quality. 3. 12 CONC ENTRATION: The quantity of one constituent dispersed in a defined z.'r_ount of another. 3. 13 COti'TARILNIANT: an unwznt'ed airborne constituent that ma3- reduce acceptability of the air. 3. 14 bUST: an air suspension, (aerosol) of particles of any, solid material, usually with particle size less than 100 micrometers (,,m). 3. 15 EXFILTR'ATION: air leakage outward through cracks and, interstices and through ceilings, floors and wallis of a space or building. 3. 16 FURiES: airborne solid particles usual'ly less than 1 micrometer (Nm) in, size formed by condensation of vapors, sublimation, distillation, calc'Lnation, or chemical reaction. O w 3. 17 I'NFILTRATION': air Leakage imward through cracks and inter- W cT stices, and through ceilings, floors and' walls of a space or building. :, 3. 18' GAS: a state of matter in which substances exist in the form of non- aggregated r_-lolecules, and w•hich, within acceptable limits of accuracy,

sa''sfzes the ideal gas usu?I1v a hlg!1Iy suoerhea'eu '.'aDor. 3. 19 h' ATUR AL VE',,,TILATIO`:: the movement of air into and out of a space through intentionally provided openings, such as windov.,s and' doors, or through nonpowered ventilators or by infiltration. 3. 20 OCCUPIED ZONTE: the region within a space between pl'anes 3 and 72 inches above the floor and more than 2 feet from the tivallis or fixed air conditioning equipment (see Standard~ 55-74) (3). 3. 21 PARTICU'LATE: a state of matter ini which similar or dissimilar solid or liquid substances exist in the form of aggregzt'ed' molecules or par- ticles. Airborne particulate matter is typically in the size range of 0. 01 to 100 micrometers. 3.22 TOTAL SUSPENDED PARTICLTLATE: the weight of particulates suspended in a unit volume of air when collected by ahign volume air sampler. 3. 23 VAPOR: A substance in gas form, particularly one near equilibrium with~ its condensed phase and which does not follo.~- the ideali gas laws; in general, any gas below its critical temperature. 3.24 VENTILATION: the process of supplying and removing air by natural or mechanicaL means to and from, any space. Such air may or may' not be conditioned. SECTION' 4. CLASSIFICATION' This standard specifies alternate procedures to o5ta'in acceptable air quality indoors: 1. By providing ventilation air of proper quality and quantity to the space (see Section 6. 1), or 2. By achieving acceptable air quality within the space with respect to identified contaminants (see Section 6. 2). ~ _ }

-S- ,SECTIO\ 5. SI-5?'1:~TM:EZ Ai,"}> C 5. 1 Ventilating syst'em may- be rn~echanical or natural. When mechanical ventilation is uIS-cd, provision for air fl!ow measuremernt should be included. When nat ura1 ventilation and infiltration are used, the ventilation rate shall be demonstrable. 5. 2' Ventilating systems shall be designed and installed' so thiat the air distribution does not cause conditions which, conflict with Standard 55-74 (3). 5. 3 Makeup air inlet~s shall be located to avoid contamination of the makeup air. 5. 4 Exhaust air outlets shall be located' so that exhaust air does not create a nuisance or contaminate makeup air. 5. 5 Ventilating ducts and, plenums shall be constructed' entirely of incombustible, nonporous materials (UL Standard 181) (4')1. Their construction shall comply with NFPA standards 90a and 90B (5), and the S.M_AC\A duct construction stand'ards (6)1. 5. 6 Contaminants from sources within, the space shouI'd'be collected as close as practicable to the source and removed. 5. 7 Combustion heating equipment located in the conditioned space shall be provided wit~h sufficient air for combustion, and proper venting of fliue gases. When infiltration supplies all or part of the combustion air, the supply rate of combustion air must be demonstrable (see Appendix B). Proper operation of clothes dryers and exhaust fans will require introduction of make- up air in tight structures. 03`73 5.~ ~,-, 6 5.8 Where it is necessary to remove part,iculate contaminants, air filters a-nd dust collectors should be used. Air filters should be used for particulate removal1 when the dust' loading is less than 10 mg/m3 (4 grains/ 1000 ft3). Dust collectors should be used where the dust loading ~

e:qLat_ or elceed_ 10 r»C /ri~` ( l€rai~is/7OQ1: ft"). Air fil!ters snall be selected for the particle size and 1'oading encountered'. Filters shall b, tested in accordance wilth ASHIi:'1E Standard 52- 76 (7) or MIL STD 282' (CF). Dust collectors may be Nti'.et, dry or electrostatic as required by particle size and loading (see Table 1, Chapter 11i, ASHRAE Handbook, Eouipment Vo!urr.e , 1979, (9). Where it is necessary to control gaseous contaminants, methods based' on sorption with or without oxidation should be used. Such methods are usually specifi~c to the type of the contaminant. Acommonly used absorbant is activated charcoal. Many odorous contaminants are readily oxidizable to less odorous substances, and can be controlled by passing the air through layers of pelletized oxidants such as alumina impregnated with potassium per-mLnga.^.ate. I;n the absence of an accepted, stand'ard' of performance for control of gaseous contaminants, the designer shall demonstrate the efficacy of his design. SECTION 6. 0 PROCEDURE Indoor air should not contain contaminants that exceed concentrations kno%~7ni to im hea].th or cauls_e discoinfort to occupants. Such: contaminan:sinclude variouls gases, vapors, micro-organisms, smohe, and other -iparticulate matter. These may be present in m akeup air or be introduced from indoor activities, furnishings, building materials, surface coatings, arrd~ air handling and air treatment components. Deleterious factors include toxicity, radioactivity, potential to induce infection, or allergies, ~ irritants, extreme thermal conditions and objectionabl'e odors. w G~t The Ventilation Rate Procedure (Section 6. 1) provides one way to L` " achieve generally acceptable air quality. This procedure prescribes the Q rate at which ventilation air must-be delivered to a space and various me=s to condition that air. The ventilation rates in Table 3 are derived from physiological considerations, subjective evaluations and professional judgr:ients. i