Tag Archives: consulting

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 limited 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.

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.

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.

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).

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 limited residential applications.


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 to identify 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.

Radon Gas Testing in Dallas / Fort Worth and Texas: More Critical For Home Safety Than You Think

Radon Gas Home Inspections in Dallas Texas    Radon Gas A Home Danger in Dallas

20,000+ Lung Cancer Deaths Annually in the United States

I had another radon gas inspection job in Garland recently and a remark by one of the interested parties got me to thinking. This was relayed by a third party, but I believe the statement was something along the lines of: “Texas homes do not have a radon problem” which I know to be patently false as I have found homes that tested beyond the EPA action limit of 4 picoCuries/liter including MINE. (I have measured 4.9 – 8.0 pCi/L in the Lake Highlands area which is equal to a pack of cigarettes a day) I have also personally been to several residences that had radon mitigation systems in place, and when they were turned off, the levels went back into the danger zone.

So how do myths and misinformation like this get perpetuated? Radon is a more common issue in other parts of the United States and tends to be more detectable in homes with basements, (as radon is heavier than air) but it is common enough in the North Texas region to be worth checking as a part of indoor air quality testing in Dallas and Fort Worth.

The number of homes in the Dallas, Tarrant, Collin and Denton counties exceed the EPA action limit 5 – 10 % of the time which IS statistically significant; up to 1 out of 10 homes. Furthermore if you add in the number of homes which are marginal (2.0 – 3.9 picoCuries/Liter) as radon gas concentrations vary throughout the day, year, etc. then the number of potentially affected homes in North Texas is closer to 16 – 24 %.

Also, the World Health Organization (WHO) recommends a lower limit than the EPA with the mitigation safety limit set at 2.7 pCi/L versus the higher limit of 4.0 pCi/L by the Environmental Protection Agency. And there is NO SAFE LIMIT of radon gas, any amount is bad, but you can’t get away from it entirely as even outdoor levels are typically 0.3 pCi/L and average indoor is 1.1 – 1.3 pCi/L.

So how dangerous is radon gas? Here is a quick risk comparison by the EPA:

Radon Gas Risk Statistics

Radon Gas Risk Statistics

This graph shows only 15,000 deaths annually, (the lower number is because the stats are derived from 1986 data quoted by Environmental Science Technology Vol 24 pp. 774 – 1990)  but a more recent EPA report (2014) shows closer to an estimated 20,000+ lung cancer deaths annually due to radon – 2nd only to smoking in direct cause – which is actually higher than the fatalities caused by drunk driving in which a great deal of energy has been focused on in recent years.

The problem with radon gas is that it is invisible, silent, and much harder to track than the erratic, weaving driving patterns of an inebriated driver. Couple this with a mythologies like: “Texas homes don’t have radon” or “You need to have a basement for radon to be an issue” and this becomes a significantly overlooked risk and safety factor that is relatively easy to test for and not necessarily that expensive to correct.

How does radon gas do it’s damage? By the emission of inhaled alpha particles that get into the lungs and whose ionizing radiation damages cell DNA. This mechanism works by attacking DNA molecules within the cells to form free radical ions, or changes the molecules themselves into excited molecules that can form biochemical pathways to cancer.

Radon Gas Inhaled Lung Damage Alpha Radiation

Radon Lung Damage Alpha Radiation

So even if your home has no basement (very few residences in Texas do) then why be concerned? Because the gas can still seep in through cracks in the foundation or gaps in a pier and beam construction. (you don’t need a basement to have a radon issue)

Radon Gas Home Inspection in Dallas / Ft. Worth to find potentially unsafe levels of radioactivity due to these various sources of entry

Radon Gas Home Inspection in Dallas / Ft. Worth to find potentially unsafe levels of radioactivity due to these various sources of entry

The solution is to first retest to make sure that the radon levels are consistently high enough to warrant attention and if so, proper ventilation is designed and installed by a professional radon mitigator, and then the residence retested to make sure that the system is working. Incidentally, ScanTech does no mitigation as we consider it a potential conflict of interest.

But for a prospective homeowner who is interested in a property, it is important to get the radon checked as soon as possible once you are inside the option period. The reason why is because of the time delays in deploying the kits, waiting the 48 – 96 hours for the kits to develop, transit time to the lab and the radon lab processing / reporting time. This means a dead minimum of 4 days under IDEAL circumstances with rush fees and hand trucking the kits in to the lab. Otherwise, it can take up to over a week which can easily exceed the standard 10 day option period.

ScanTech does have the ability to check the radon levels with a special digital tester that can get results much more quickly (in as little as 1 – 2 days after deployment) with the same level of accuracy as the activated charcoal radon test kits described above and it is less expensive when comparing a return trip to retrieve the device and interpret the results versus a return trip for the charcoal kits.

The charcoal kit route is more feasible if the testing is not as time sensitive and/or the client is willing to either mail or hand carry the kits into the radon testing lab itself located in Dallas County.


RADON FAQ PAGE for Dallas / Fort Worth & Surrounding Counties



Pacemaker / Biomedical Implant Electromagnetic Interference EMI Sources & Issues

While pacemakers and other biomedical implants and implantable devices are somewhat more resistant to electromagnetic interference (EMI) than in previous generations, there are also more sources of potential EMI from new technologies such as hybrid vehicles, wireless chargers and so forth.

For example, the DC magnetic field from headphones can exceed 10 Gauss and can demonstrably interfere with the operation of a pacemaker. Cardiac centers a few years ago did a study and found that up to 15 % of patients with a pacemaker experienced interference issues when headphone came within 1.2 inches of the device, and up to 30 % of patients with an ICD (Implanted Cardioverter Defibrillator) also demonstrated operational abnormalities caused by the close proximity of the speaker.

While cell phones and MP3 players are less likely to cause issues, they should still be kept away from the heart / bioimplant area as there is a chance that RF energy from these electronic device could cause unpredictable behavior. Several years ago, there were some studies that indicated that MP3 players themselves (separate from the magnetic field of the speakers) could not affect a pacemaker, but since then MP3 players have evolved to other transmission modalities which involve using radiated Bluetooth frequencies.

Also, very recent studies (June 2015) have shown that cell phone can influence pacemakers in unexpected ways. At close range (within 6 inches) pacemakers can misinterpret the signal from a cell phone as a cardiac signal which then responds by consequently pausing the cardiac rhythm of the patient and could lead to fainting. For ICDs, the cell phone signal could be mistaken for ventricular tachyarrhythmia and lead to a painful shock as the ICD is programmed to respond to what it thinks is abnormal heart rhythm.

Also, high electric fields such as those beneath high voltage power lines could induce similar behavior if the implants are set to configurations which lower their EMI susceptibility.

Pacemaker ICD Diagram

Pacemaker ICD Diagram