Why Be Concerned with IAQ?

From: Occupational Health & Safety ACCORDING to the National Human Activity Pattern Survey (NHAPS) as referenced by EPA, Americans spend about 90 percent or more of their time indoors. For this reason, the quality of our indoor air should be of great concern, whether it is in a home, a workplace, or a school, hospital, …

MSD Limits

Metropolitan St. Louis Sewer District – Sewer Discharge Limitations District Limitations: At the point of discharge from the user’s property to the District’s wastewater system, all users shall comply with the following limitations. Separate limitations apply for discharges to the District’s plants with outfalls to the Mississippi and Missouri Rivers (Large Rivers) and for plants …

What does LEED mean?

Leadership in Energy and Environmental Design, or LEED, is a building certification process developed by the U.S. Green Building Council (USGBC), a non-profit organization (not a government agency) headquartered in Washington, D.C. The USGBC developed the LEED certification process to enhance environmental awareness among architects and building contractors, and to encourage the design and construction …

LEED Requirements

LEED Testing Requirements Methods for the Determination of Air Pollutants in Indoor Air,” and as additionally detailed in the USGBC’s “LEED-NC: Reference Guide.” Demonstrate that the contaminant maximum concentrations listed below are not exceeded: Formaldehyde: 50 ppb. Particulates (PM 10): 50 micrograms/cu. m. Total Volatile Organic Compounds (TVOC): 500 micrograms/cu. m. 4-Phenylcyclohexene (4-PH): 6.5 micrograms/cu. …

Total Volatile Organic Compounds

This is a list of chemicals that can be detected in a High Sensitivity Scan. The scan can be performed on an Air Sample or a Material Sample. Air Sample The scan requires the sampling of an air stream for 4 hours. The detection limit is between 1PPM (part per million) and 1 PPB (part …

TO-15 Testing

How can TO-15 Help You Solve Your Next IAQ Problem? Have you ever been asked to investigate unpleasant odors in a home or at the workplace? Are occupants developing headaches or a feeling of nausea? It may be prudent for you to include a general volatile organic compound (VOC) scan in your sampling strategy. The …

Testing Welding Shops – Chromium (VI) (Hexavalent Chromium)

Testing Welding Shops United States Department of Labor – OSHA General Description Synonyms: Ammonium Dichromate; Barium Chromate; tert-Butyl Chomate; Calcium Chromate; Chromium Trioxide; Chromium (VI) ion; Hexavalent Chromium; Lead Chromate; Potassium Chromate; Potassium Dichromate; Silver Chromate; Sodium Chromate; Sodium Dichromate; Strontium Chromate; Zinc Chromate; Zinc Dichromate OSHA IMIS Code Number: 0689 IMIS Codes history: 0686, …

TDT High Sensitivity Air Scan

TDT Air Scan for chemicals detectable by Mass Spectrometer This is a list of chemicals that can be detected in a TDT High Sensitivity Air Scan. The scan requires the sampling of an air stream for four (4) hours.  The detection limit is between 1PPM (part per million) and 1 PPB (part per billion) depending …

TB503-15 Compound only list B12

Quantitative List A Benzene 1,2- Dibromo-3-chloropropane‡ 1,1- Dichloropropene Toluene Bromobenzene Dibromomethane 1,3- Dichloropropene (cis) 1,2,3- Trichlorobenzene‡ Bromochloromethane 1,2- Dibromoethane 1,3- Dichloropropene (trans) 1,2,4- Trichlorobenzene‡ Bromodichloromethane 1,2- Dichlorobenzene‡ Ethylbenzene 1,1,1- Trichloroethane Bromoform 1,3- Dichlorobenzene‡ Hexachlorobutadiene‡ 1,1,2- Trichloroethane n- Butylbenzene‡ 1,4- Dichlorobenzene‡ Isopropylbenzene Trichloroethene sec- Butylbenzene 1,1- Dichloroethane p- Isopropyltoluene 1,2,3- Trichloropropane tert- Butylbenzene 1,2- Dichloroethane Methylene …

Styrene Exposure Limits

Styrene Information CAS number: 100–42–5 NIOSH REL: 50 ppm (215 mg/m3) TWA = Time Weighted Average 100 ppm (425 mg/m3) STEL = Short Term Exposure Limit Current OSHA PEL: 100 ppm TWA 200 ppm CEILING, 600 ppm 5-minute MAXIMUM PEAK IN ANY 3 HOURS 1989 OSHA PEL: 50 ppm (215 mg/m3) TWA 100 ppm (425 mg/m3) STEL 1993-1994 ACGIH TLV: 50 ppm (213 mg/m3) TWA 100 ppm (426 mg/m3) CEILING [skin] …