Tag Archives: IAQ

EMF Testing Indoor Air Quality Radon Gas Testing: 214.912.4691 Dallas – Houston – Austin – Fort Worth

Powerline Home Safe Distance Cell Phone RF Surveys

Cell Tower Site on High Voltage Power Line near homes in residential area in North Dallas – EMF Testing and Surveys

EMF Testing / Magnetic Field Survey & Safe Distance Measurement Services

EMF testing for those concerned about living near powerlines and feeders is available for commercial clients and large scale residential with reports that range from verbal to complete reports with photo documentation and graphics. We also provide consultation on viable strategies and products for EMF protection. We travel all over Texas and cities in adjacent states including Dallas, Houston, Fort Worth, Austin, San Antonio and Oklahoma City.

Implanted Biomedical Device EMF / EMI Measurement Compliance Surveys and Testing for Patient Safety

Medical Device Compliance Testing (Pacemakers, Implantable Defibrillators, ICD’s etc. – Medtronics, St. Jude Medical, Boston Scientific, Mortara) for individuals returning to work or home after implant surgery to identify potential hazards from AC/DC Magnetic and Electric Fields, Microwaves, RF and general EMI (Electromagnetic Interference).

RF (Radio Frequency) Scans and Evaluations – Maximum Permissible Exposure (MPE)

We test RF energy for frequency and amplitude in order to find sources and evaluate safety with respect to FCC regulatory, compliance and precautionary guidelines, and to determine potential interference issues between wireless routers, cell phone repeaters / boosters, Radio Frequency Identification (RFID) systems, and wireless microphone / audio / video data systems.

Magnetic / Electric / RF & EMF Shielding Consultations including proper grounding

If you have an issue with electromagnetic energy that is either a safety issue or causes equipment interference, we are fully qualified to assess, troubleshoot and make sound recommendations to fix or mitigate the situation.

Radon Gas Measurements & Surveys (Short / Long Term Testing)

With a background in radon and radiation safety, we are capable of evaluating and reporting on radon gas levels, how they compare with EPA standards and whether a mitigation solution is called for. This is now a common requirement for HUD, Fannie Mae, Freddie Mac, structures that fall under GSA guidelines, etc.

EMF Testing for Electrical Wiring Issues Indicated by Excessive EMF Fields

Whether you believe in the safety hazards of EMF or not, the most common source of high EMF fields inside the home is improper wiring which fails to conform to current NEC code. ScanTech can detect and direct repairs on electrical wiring that manifests as an abnormal magnetic field.

Preliminary Construction Surveys / Property Transfer Phase I Environmental Site Due Diligence Survey testing regarding Indoor Air Quality (IAQ) – EMF Consultation for Safety and potential EMI – Radon Testing for Multi-Family Dwellings and Commercial Buildings.

We are often called out to site before a structure or complex is erected in order to survey and communicate any possible issues and the potential impact of nearby power lines, substations, transformers, cell towers and other EMF/RF generating sources. We also make construction recommendations for minimizing electromagnetic field emissions for safety and electromagnetic Interference concerns with sensitive manufacturing and research equipment.

Indoor air quality testing for VOC levels regarding Certificate of Occupancy permits according to City of Dallas Green Ordinances. Also known as the 804.2 Post-Construction, Pre-Occupancy Baseline IAQ Testing which is a 4 hour test for 500 uG / m^3 or less of VOCs.

Magnetized & Radiation Contaminated Metals, Stone and Imported Products

ScanTech has been in the radiation survey business for over 10 years and is routinely called upon to investigate cases of suspected radioactive contamination and magnetized ferrous metals which can cause unusual issues. Our instrumentation includes several Geiger counters with capable of detecting Alpha and Beta particle emissions, X-Rays and includes specialized Gamma radiation scintillation detectors.

Weak Cell Phone Signal Reception Issues & Wireless LAN Problems / RFID Interference

Weak Cellular Phone (including 2G / 3G / 4G LTE) & Wireless Strength Measurements with consulting for correction / mitigation in commercial buildings, residential and multifamily properties with poor coverage, slow data rates and dropped calls for all major telecom and communications carriers including Sprint, T-Mobile, Verizon, AT&T for smartphones, tablets, iPads, etc. Radio Frequency Identification system troubleshooting and interference issues investigated. We also perform FCC RF Compliance surveys for MPE (Maximum Permissible Exposure) including rooftop antenna installations.

 

Hospital Infant Anti-Abduction Security Systems

ScanTech troubleshoots RFID integrated systems designed to protect neonatal care facilities that employ systems such as Hugs by Stanley Healthcare and MyChild by McRoberts Security Technologies.

Electrostatic Discharge (ESD) Testing, Consulting And Evaluation for Commercial, Industrial and Biomedical Companies / Applications / Clients

We have the equipment to determine the sheet resistance of ESD flooring material and if anti-static grounding is working as well as the ability to identify troublesome materials and processes which can cause equipment malfunction and electric shock / fire / explosion hazards. We can also measure relative air ion counts, humidity and the direct DC static voltage on surfaces (positive or negative) up to 30,000 V to determine which objects in the environment may be damaging your static sensitive equipment.

Indoor Air Quality (IAQ) Surveys to Determine Relative Air Cleanliness PM2.5 / PM10 / HEPA Filtration Efficiency / Formaldehyde / VOC / CO2 (Carbon Dioxide) / O2 Oxygen % Concentration & Contamination for Commercial Building and Industrial / Occupational Atmosphere Evaluations with expertise in Nanotoxicology and Medical Environmental Illness Testing

We have time based datalogging air laser analysis available to characterize particulate matter such as small particle contaminants (down to 0.5 microns such as bacteria) and large particle counts (2.5 um and larger) for potential pollen, dust and mold detection which are also known as RSPs. (Respirable Suspended Particles) We can also check for formaldehyde concentrations and VOCs (Volatile Organic Compounds) levels from outgassing materials such as pressed wood flooring or glues and other binders.

Elevated CO2 (carbon dioxide) levels are indicative of Sick Building Syndrome and poor air exchange characteristics in a structure.

New nanomaterials on the market have raised concerns about the potential toxic effects of nanoparticles (such as carbon nanotubes, titanium dioxide, silver NPs, etc.) in particulate, aerosol, aqueous forms and their in-vivo effects.

Commercial, industrial, occupational health and large scale residential applications.

http://www.indoorairqualitytestingdallas.com/

OSHA Sound / Noise Level Surveys for Safety Audits

Sound (Commercial) & Industrial Safety field surveys and measurement including for acoustic OSHA sound and STC (Sound Transmission Class) noise levels / ordinances / testing (meeting ANSI & IEC Type 2 standards) to determine compliance and evaluate potential issues with excessive or disruptive noise.

Photometric Glare & Illumination (Lighting Level) Surveys for Safety, OSHA and City Ordinance Compliance

Photometric mapping for Certificates of Occupancy, (CO) identifying poor / insufficient / excessive illumination, security camera glare, ATM lighting security assessments, ADA lighting requirements / compliance, and privacy. Many cities have enacted ordinances which limit the amount of light emanating at the property line at night in foot candles. (fc) We can also measure lighting flicker rates which can cause headaches and other performance issues as well as evaluate possible disruption of circadian rhythms which lead to insomnia and lack of restful REM sleep.

Metallurgical Analysis & Consulting

Materials analysis for ferrous / non-ferrous metals / alloys. Tools and tool steel quality evaluations for carbon content. Also magnetic / RF / electric shielding capability, corrosion resistance, heat resistance, degree of temper, quench methods, elasticity, weathering, and electrical quality consulting. Metamaterial composite research for nanotechnology, biomedical, and exotic applications. (graphene, nanoparticles, carbon nanotubes, nanodiamond, etc.) Radioactivity testing for scrap metal or other suspected products.

Formaldehyde: Indoor Air Quality Pollutant and Testing

FORMALDEHYDE Cancer Warning

Formaldehyde Testing Dallas – Fort Worth

ScanTech offers selective testing of indoor formaldehyde testing in both residential and commercial buildings in the Dallas – Ft. Worth region.

http://www.indoorairqualitytestingdallas.com/

Formaldehyde (Chemical formula CH2O and also known as Methanal) is a colorless, water soluble gas at room temperature with a pungent, irritating odor at less than 1 part per million. (1 ppm – and detectable as low as 0.83 ppm) It is an inexpensive chemical with excellent bonding properties produced in high volume throughout the world. A major use is in the fabrication of urea-formaldehyde (UF) resins used primarily as adhesives when making plywood, particleboard and fiberboard. In the 1970’s it was a component of UF foam insulation in sidewalls until it was banned in 1982 by the U.S. Consumer Product Safety Commission because they found levels as high as 4 ppm. (but the ban was later overturned)

Due to it’s very low boiling point of -19 Celsius, formaldehyde is technically a VVOC (Very Volatile Organic Compound) and has very strong chemical and photo-chemical reactivity. It is commercially available as formalin which contains 38% formaldehyde and 6% – 15 % methanol.

Many common household cleaning agents contain formaldehyde and other sources include cigarette smoke and the combustion byproducts of gas / wood stoves and unvented space heaters such as kerosene heaters. It can also be found in paper products such as facial tissues, paper towels and grocery bags.

In general, emission or outgassing rates of formaldehyde increase with temperature, humidity, wood moisture content and decreased formaldehyde in the air. (due to passive diffusion) Generally, some remediation can be found by decreasing humidity and temperature, sealing materials with vinyl wallpaper or non-permeable paint and increasing ventilation. (air exchange rates)

Plywood is composed of several thin sheets of wood glued together with UF copolymeric resin which originally had a high HCHO to urea ratio of 1.5 to 1 to ensure adequate chemical cross-linking of all primary and secondary amino groups. Because the excess HCHO outgasses significantly and subsequently caused health complaints, this ratio was reduced to 1.05 to 1. Particleboard (compressed wood shavings mixed with UF resins at high temperatures) can emit formaldehyde continuously for comparatively long times; from several months to several years. Medium density fiberboard (MDF) was found to be the highest emitter of formaldehyde. Elevated levels are more likely to be found in newer homes with pressed wood materials such as flooring lumber mixed with the UF resin.

UF wood adhesives have excellent bonding performance, but are somewhat chemically unstable and release monomeric formaldehyde due to hydrolysis of the methyol end groups and sometimes the methylene bridges themselves. This means that hydrolytic decomposition and outgassing of HCHO is dependent on moisture levels, so UF-bonded wood products are primarily for indoor use where humidity levels are typically controlled.

Emissions do tend to decrease with time as the materials out-gas, age and cure. It is also used in the production of urea-formaldehyde foam insulation. (UFFI)

While there are several other sources of formaldehyde such as wood and forest fires, cigarette smoke, motor vehicle combustion, and decomposition of methane by sunlight and oxygen, etc. indoor levels are generally higher than outdoor levels. (10 – 20 parts per billion or 0.010 ppm – 0.020 ppm but may reach levels of 50 ppb in areas with significant photochemistry / smog )

Formaldehyde Molecule

Formaldehyde Molecule

Formaldehyde is also produced in the human body in small amounts as it is a metabolic byproduct of drinking alcohol (ethanol) among other chemical pathways. But the amount is relatively small and rapidly broken down into formic acid.

Individual sensitivity to formaldehyde varies, but from 10 – 20 % of the population appears to be highly sensitive to relatively low concentrations. This may be a result of TVOC (Total Volatile Organic Compound) synergy with other pollutants. The principle symptoms experienced are irritation of the eyes, nose, throat, dry facial skin and asthma like symptoms. (difficulty breathing, constriction of the bronchial tubes) Higher concentrations may even lead to headaches, fatigue, insomnia, nausea, unnatural thirst, menstrual irregularities, epistaxis, (nosebleed) coughing, chest / abdominal pain, and rapid heartbeat. (tachycardia)

Allergic dermatitis may occur from skin contact. There are also neurological-like symptoms in some, (including depression) with the chance of potential sensitization and even upper respiratory system cancers. There is some controversy about the cancer causing / carcinogenic effects with some evidence showing that risk only substantially increases at very high exposure levels such as in occupations which deal directly with formaldehyde such as embalmers and anatomists. But formaldehyde has been shown to be genotoxic in cell cultures which causes damage through DNA cross-linking, single strand breaks and chromosome aberrations which indicate that HCHO is mutagenic as well.

Regardless in testing, levels as low as 0.25 ppm (which is below the detectable odor threshold) significant eye and throat discomfort increases in frequency. Chronic bronchitis and asthma are more prevalent in children in homes with HCHO levels in the 0.06 – 0.12 ppm with a 22% decrement between the two values.