Tag Archives: PM2.5

Dallas Indoor Air Quality Testing 214.912.4691 – Radon, IAQ, Mold Inspection and Testing & Rapid Onsite Results

DAYS / HOURS OF OPERATION  (text to with inquiries – 24 / 7 but please include physical address, square footage and email)
7 Days a Week  8 AM – 8 PM   (Central Standard Time)

Dallas Indoor Air Quality Testing

P100 Respirator with 2091 Filters by 3M

214.912.4691 – Through years of performing environmental testing in the Dallas / Fort Worth – DFW Metroplex area, ScanTech has evaluated numerous risk factors that impact human health from the perspectives of both short term (acute effects) and long term (chronic health issues) impacts in the occupational health realm.

ScanTech can check for the following key indoor air quality level indicators (many with time-based datalogging available) and have a report for you at the time of the onsite visit:

  • Formaldehyde (HCHO)
  • VOCs (Volatile Organic Compounds)
  • Carbon Dioxide (CO2) – measurement of fresh air dilution that tracks with VOCs
  • Carbon Monoxide (CO) – a dangerous from combustion byproducts
  • Respirable Dust Particles in PM2.5 (fine) and PM10 (coarse) size regimes
  • Oxygen Levels
  • HEPA Filtration and other central air purifier efficiency (MERV Rating)
  • Pressure differentials between inside and outside (affects contamination potential)
  • Relative ventilation levels – critical to know in newer homes that are tightly built

Optional Testing

  • Mold Testing & Inspection including air samples, tape lifts and visual inspection
  • Bacterial, Microorganism, Parasite & Bio-Film issues
  • Radon Rn-222 Levels (alpha emitter lung carcinogen found in Texas including Dallas)
  • Ozone levels testing – ozone is a oxidizing respiratory irritant
  • Hydrogen Sulfide (H2S) – toxic sewer gas that has a foul odor
  • City of Dallas Green Ordinance Post Construction IAQ Clearance Sampling for 804.2

along with atmospheric factors such as:

  • Temperature
  • Relative Humidity
  • Absolute Humidity
  • Mixing Ratio, Vapor Pressure, Dew Point
  • Barometric Pressure (to judge whether the structure is under positive or negative pressure with respect to the outside air)

Many residents of the Dallas / Fort Worth area suffer from the following symptoms, ailments, and diseases – much of which can be traced either directly to air quality and composition or is exacerbated by poor air quality:

  • Allergies & Sinus Infections – (high particulate counts and VOCs, formaldehyde)
  • Chronic Allergic Rhinitis – (bio-aerosols)
  • Eye irritation – (formaldehyde, hydrogen sulfide, VOCs)
  • Congestion – (high particulate counts and VOCs, formaldehyde)
  • Inflammation – (formaldehyde, VOCs)
  • Fatigue – (carbon monoxide, carbon dioxide)
  • Insomnia
  • Headaches – (carbon monoxide)
  • Dizziness – (carbon monoxide)
  • Cognitive issues including difficulty focusing
  • Nausea
  • Coughing – (high particulate counts, mold, MVOCs)
  • Asthma & other breathing difficulties – (MVOCs, high particulate counts, ozone)
  • Bronchitis – (irritation of the lung bronchi)

These issues can contribute to and/or be symptomatic of more serious ailments such as:

  • COPD (Chronic Obstructive Pulmonary Disease)
  • Hypersensitivity Pneumonitis
  • Carbon Monoxide / Carbon Dioxide Poisoning
  • Autoimmune Disease
  • Cardiovascular Disease
  • Stroke
  • Lung Cancer
  • Leukemia
  • Non-Hodgkin’s Lymphoma
  • Neurological issues due to chemical exposure and/or oxygen deprivation

In many cases, a simple series of air quality tests that detect and report important metrics such as respirable particle levels, VOCs, formaldehyde levels, radon gas, carbon monoxide, carbon dioxide, oxygen levels, etc. can narrow down the issue(s) responsible. Very often, mitigation is relatively inexpensive and well worth the modest investment.

While ScanTech can make suggestions on how to clean up your air, we are not an equipment vendor or installer, so there is no conflict of interest in selling you products that you don’t need. (or that may make things worse)

ScanTech Residential Service Area Map Dallas and Fort Worth

ScanTech Residential Service Area Map Dallas and Fort Worth

Cities for radon / indoor air quality inspection services include: Dallas, Fort Worth, Houston, Austin, San Antonio, Plano, Highland Park, University Park, Park Cities, Arlington, Grapevine, Frisco, Denton, McKinney, Allen, Lewisville, Irving, Mesquite, Bedford, Euless, Richardson, Coppell, Grand Prairie, Garland, Addison, Farmers Branch, Rockwall, Carrollton, Parker, Rowlett, Lucas, Fairview, Park Cities, Keller, Roanoke, The Colony, Highland Village, Lake Dallas, Corinth, Prosper, Duncanville, Lancaster, Rowlett, Royse City, Trophy Club, Southlake and Hurst. Counties served include Dallas, Collin, Denton, Tarrant and Rockwall County.

Indoor Air Quality Testing of Fine (PM2.5) and UltraFine Particles – Why Smaller Particles = Unsafe and Hazardous

It isn’t necessarily the dust you can see that can cause the most severe health issues, it is microscopic dust that is smaller than the eye can resolve that is now linked to a number of ailments of not just the respiratory tract, but also cardiovascular disease.

Why is this?

Because larger particles such as PM10 or 10 micron particles which fall into the COARSE size range dust particles (2.5 microns – 10 microns) as defined by the EPA:

  • Fall to the ground much faster (within minutes) instead of staying airborne for days or longer where they can be inhaled such as is typical of smaller particles. This also means that smaller particles can travel much further from the source. (such as combustion products from a road or highway)
  • The bodily defense mechanisms of mucus and cilia which are designed to trap larger particles and move them up and out of the lungs do not defend as well against smaller particles as they can bypass these systems and make their way progressively further down into the respiratory system.

However, the smaller PM2.5 particles which fall into the FINE size range (0.5 – 2.5 microns) are:

  • Sufficiently small particles of a few microns or less in diameter which can actually bypass the para-cellular (between the cells) junctions of the epithelial cells in the lung air sacs, which means they can go deep enough into the human respiratory system to pass DIRECTLY into the bloodstream.
  • Prone to stay suspended for much longer periods of time (hours, days, weeks) and can travel a longer distance from the original source.
  • Not easily filtered out by the body’s natural defenses due to their small size.
  • And if these particles are of a chemical nature, (such as aggregated / adsorbed VOCs, heavy metals, etc.)  then toxic damage can occur. If they are of a more inert nature, they can still cause damage by nucleating deposits in arteries.

For an idea of how small these particles are in relation to familiar objects such as hair and sand, here is an illustration.

PM2.5 Particle Scale from Mold Dust Pollen and Indoor Air Quality Effects

PM2.5 Particle Scale and Effects Indoor Air Quality – microns are abbreviated as um or micrometers

Some of the worst air quality readings I get are inside of expensive homes that look immaculate, (because the larger, visible dust particles have been cleaned up) but still do not adequately filter out the more dangerous smaller suspended respirable particles. (SRP)

UltraFine particles (UFP) are in the nanoscale range of 100 nanometers or less (0.1 microns) just below the PM2.5 FINE particle size range and they can penetrate though the membranes of cells and migrate to distant organs such as the brain. An example is Diesel Particulate Matter (DPM) which are essentially soot (carbon) but with carcinogens such as benzopyrenes adsorbed onto the particle which makes it a potential physio-chemical toxin. Benzopyrenes are considered harmful because they can intercalate (insert themselves) in between the nitrogeneous bases of DNA and thereby interfere with self-replication and protein production by transcription errors.

Harmful Toxic Airborne Chemical - Structural Diagram

Chemical Structural Diagram of Benzo(e)pyrene

Ambient Air Pollution and Risk for Ischemic Stroke and Transient Ischemic Attack (TIA)