Good (4 points each) > mg/m Bq m Bq m Bq m -3 < ,000 1,000-10,000 10, ,000

Transcription

1 Rating (5 points each) (4 points each) (3 points each) (2 points each) (1 point each) Temperature ( C) C Plus or minus 1 C (including Plus or minus 2 C (including Plus or minus 3 C (including Plus or minus 4 C or more (including Carbon Dioxide (PPM) Relative Humidity (% RH) < > < 40 / > 60 < 30 / > 70 < 20 / > 80 < 10 / > 90 Carbon Monoxide > mg/m 3 Nitrogen Dioxide TVOC < > < > Formaldehyde Radon (Bq m3) Particulate matter < mg/m3 > Bq m Bq m Bq m > Laser Particle counter 0.3 ug 0.5 ug 1.0 ug 2.5 ug 5.0 ug 10.0 ug 0 100, , , ,001-50,000 35,201 87,500 8,321 20, , ,001 > 87,501 > 20,801 > 1,363 > 484 > 171 > Viable air sampling (CFUs) < ,000 1,000-10,000 10, ,000 > 100,000 Occupant s perception of comfort (%) 100% of 90-99% of 80-89% of 70-79% of Under 70% of Odour odours as Clearly acceptable odours as Acceptable odours as Neutral odours as Just not acceptable odours as Clearly not acceptable Overall Rating < 25 The above data provides indicators for a healthy indoor environment; however, specific contaminates that present a risk should be investigated, such as specific species of mould, fibrous materials and particular chemical compounds. Reference to be made to relevant documentation, such as the HSE s EH40 document. Synergistic effects should be considered.

2 18-21 C The Building Research Establishment. Temperature ( C) Plus or minus 1 C (including. Plus or minus 2 C (including. Plus or minus 3 C (including. Plus or minus 4 C or more (including occupied rooms,. Below 600 PPM Carbon Dixoide (PPM) PPM PPM PPM 1800 PPM % RH < 40 / > 60 % RH Relative Humidity (% RH) < 30 / > 70 % RH < 20 / > 80 % RH < 10 / > 90 % RH 0 mg/m 3 (0.8 ppm) - - Carbon monoxide 1-7 mg/m 3 (5.6 ppm) WHO European guidelines recommend not exceeding 7 mg/m mg/m 3 (5.6 ppm) >

3 < 0.2 mg/m Nitrogen mg/m 3 annual average indoor nitrogen dioxide of 40 WHO air quality guideline recommends an μg/m > mg/m 3 3 < 0.1 mg/m mg/m TVOC mg/m ng/l as the upper TVOC limit mg/m 3 TVOC levels between 500 and 1,500 ng/l indicate that air quality is marginal and some effect on the is possible. 1.0 > mg/m 3 levels above 1,500 ng/l indicate that IAQ should definitely be improved. 3 < 0.02 mg/m mg/m 3 LEED / BREAM. Formaldehyde mg/m mg/m mg/m 3 > No standards, however WHO proposed guideline of 0.21 mg/m3 for the protection of long-term health effects, including cancer.

4 0 Bq m Radon (Bq m -3 ) -3 The average level in UK homes is 20 Bq m Bq m Public Health England Bq m -3 Target Level of 100 Bq m-3 is the ideal outcome - Public Health England. Above 100 Bq m -3 levels should be reduced in homes where the average is more than 200 becquerels per Public Health England recommends that radon metre cubed (200 Bq m -3 ). Particulate matter > Laser Particle counter 0.3 µm 0 100, µm 0 35, µm 0 8, µm µm µm µm 100, , µm 35,201-87, µm 8,321-20, µm 546-1, µm µm µm 250,001 > 0.5 µm 87,501 > 1.0 µm 20,801 > 2.5 µm 1,363 > 5.0 µm 484 > 10.0 µm 171 >

5 Viable air sampling (CFUs) Below 1,000 CFUs of mould per gram in a culture sample plate. 1,000-10,000 CFUs of mould per gram in a culture sample plate equals low mould contamination level. 10, ,000 CFUs of mould per gram in a culture sample plate equals medium mould contamination level. 100,000-1,000,000 CFUs of mould per gram in a culture sample plate equals medium to heavy mould contamination level. Interministerial Committee on Indoor Air Quality. Ministry of Labour (MOL) Ontario, Canada, Report. > 1,000,000 CFUs of mould per gram in a culture sample plate equals heavy. 100% of with 90-99% of with Perception of comfort (%) 80-89% of with ASHRAE Standard 55, Thermal Environmental Conditions for Human Occupancy % of with Under 70% of with No standard, however, research indicates 69% of people dis with their indoor environment (Riggs, 2014). Odour (%) odours as Clearly acceptable. odours as Acceptable. odours as Neutral. odours as Just not acceptable. odours as Clearly not acceptable.