I love hearing about other IH/EHS/Safety -people and their careers. They are inspiring and there are some really COOL jobs in this profession. I’d like to introduce you to Michael Grasso. He’s been on some very interesting projects, is very personable, and has some insight into the future of construction safety. OLYMPUS DIGITAL CAMERA

How did you get started in IH/Safety?

I got started in IH/Safety in high school as a student athletic trainer. In college I was a health science major, the athletic training program was only opened to physical education majors. My professor for School and Community Safety encouraged me pursuit a career in safety. At this time OSHA was fairly new. The professor took me along with him when he did safety inspections on the campus. While going to the University I attended classes at the local community college in Safety and one in Industrial Hygiene. The text book was the first addition of the NIOSH white book. During the summers I worked for a public utility company as a laborer. The Safety Director bought me a copy of the “Accident Prevention Manual for Business & Industry” (NSC). My grandfather related the story of miners dying in the tunnel in West Virginia from the dust. Years, latter while reading the Washington Post, I found out it was Gauley Bridge, West Virginia.

What is your background?

I have a Bachelor’s of Science Degree in Health Science and minored in biology and psychology. I did my student internship in the corporate safety office of an electric and gas Utility Corporation and an internship with the county health department in the environmental health division. Upon graduating from college worked as a laborer for a pipeline company. The majority of my career has been in a construction related field. Starting off as a Safety and Health technician advancing by changing jobs to Safety and Health Manager and finally to a Corporate Safety Director position for a design-build firm. At this firm I was instrumental in building the organizations safety and health program and culture from ground zero. In a short period of time the company won the AGC Contractor of the year award, had one VPP site, several SHARP projects and won numerous safety awards including the Golden Hardhat award from the USACE.

What do you do in your current position?

Currently I am an EHS professional for a large engineering firm. I work on various wet-infrastructure projects for clients in the northeast; assist the client with developing EHS procedures in accordance with ISO 14001 and ANSI/AIHA Z10 protocols and severe as temporary EHS manager on projects. Internal client’s consultant with me on unique health and safety issues they run into as related to construction and environmental remediation projects.

Tells us your favorite project?

My favorite project is working in Antarctica for two seasons as the resident industrial hygienist. I enjoyed the beauty of Antarctica, peacefulness, history, applying my experience and the people. You can always leave Antarctica but it can never leave you.Michael Grasso

What do you enjoy most about your career?

Knowing that you touched someone’s life, and made differences is the most satisfying aspect of my career.

What has been the most fun?

The most fun was doing the 30-hour construction awareness training for high school students who are in the building trades program. The students loved the lab as they got to wear the PPE and play with the monitoring equipment.

Anytime that was particularly difficult?

Emotionally the most difficult time for me was when a subcontractor’s hand was amputated in a concrete pump. When I went to his home with the OSHA investigator it was hard, as he was the bread winner of the family. His mother was proud that he graduated from high school, spoke good English and had a good job. This was the first serious accident that I experienced in my career.

Any hobbies/interest which makes you unique to the profession?

I collect old safety and health books. I have a collection going back to the 30’s. I have the Heinrich’s books which are difficult to read. It is interesting to compare what was going on in the 30’s and early 40’s and how OSHA incorporated them into their standard. Since college I have been a volunteer firefighter. What we learn in the fire service has applications I have used in safety and industrial hygiene. Presently, I am the fire company’s safety officer.

What books would you recommend reading? “Christ In Concrete”, By Pietro di Donato. “The Hawk’s Nest Incident: America`s Worst Industrial Disaster”, By Martin Cherniack M.D .

Words you have for those interested in construction?

It is important to know the fundamentals of construction management and the type of contract you will be working under.
Safety and health at the dirt level is where things get done and where you have the most direct influence. Saying, “Good morning Bill (or Judy)”,  or having coffee with the Project Manager goes much farther than a meeting policy statement or an EHS procedure. It shows you care. Treat others as you want to be treated goes a long away on construction projects. It is important that you can speak or understand Spanish or Portuguese. Even if you do not speak a foreign language, a smile, or a tip of the hard hat goes along way.

From an IH point what have you seen in construction that makes a difference?

Over the years heavy equipment has gotten much quitter thanks to fully enclosed cabs and engine noise reduction. Ergonomics for heavy equipment operators has come a far way in the last 10 years. It appears that many medium and large size contractors have gotten the silica message without government intervention. You see more and more workers using respiratory protection and having a hose trained on the dust generating operation. Contractors are more aware of what’s a confined space: doing monitoring, ventilation and training. Compact loaders and excavators are doing jobs once done manually. Robotic or remote operated is being used in high hazard areas. Prevention through design is slowly catching on to eliminate safety hazards. As far as health hazards go, owners, and engineers continue to specify materials potentially hazard to the health and safety of the end user, when other products are out on the market.
The number one item that is making a big difference in the construction industry is the internet. From a smartphone a trades person can find out all types of information on substances they are working or about a safety hazards.

What I see in the future for IH?

I see the future of IH playing a large role in nanotechnology. The health implications of manufacturing and using nanomaterials are not yet clearly understood. Nanotechnology may be a Pandora box.

Thank you Michael! If you have specific questions, you can reach Michael at (michaelgrasso 78 (@) hotmail .com, with no spaces).

 

Sorry for the delay in writing. I have had some personal and professional projects taking a lot of my spare time. I have been preparing to present at a couple local conferences on Industrial Hygiene in Construction. It is a good exercise for me to ponder what I should say to these audiences. Here are some takeaways:

Silica:jackhammer

My latest guess (subject to change, by even tomorrow) is the Federal OSHA rule for silica will be enacted.

“Why”, you say? …well:

  • Current administration would love to push it through
  • Yes. It’s still an issue in the construction world. Have you driven by a construction site lately?
  • Federal OSHA is also talking about updating the PELs…and this one (silica) is an easy one
  • When?  No idea.

Falls in Construction:

This one is huge. In a bad way. If you look at what kills the most in construction, it’s falls (inclusive of scaffolding, ladders, fall protection, etc.) They cost a lot too. Not just in the number of people killed, but the claims & recovery cost are high. And, near misses in construction are VERY common. For example, just two weeks ago: An 18 year old roofer apprentice was working on a roof.  He stepped onto a piece of drywall and would have fallen to a concrete slab 25 feet below. Luckily someone had moved a piece of equipment directly under where he fell. He only fell four feet and had no injuries.

Hierarchy of Controls:

Is anyone working with these anymore? Just kidding, sort of. But, we can do a better job in construction of:

  1. Engineering Controls first. Can we eliminate this hazard? Has anyone asked to substitute this product for a safer one?
  2. Administrative Controls second. There are ways and methods which we do things in construction. These are usually passed down from journeyman to apprentice. Overall, this is awesome. For example, we need to rethink why we place the rebar on the ground? Can we use saw horses? Better material handling would save a lot of injuries.
  3. PPE third. And as a last resort.

Personal Protective Equipment:

Oh boy. There is a lot of room for improvement here. The wrong equipment, worn incorrectly, not used enough, and damaged. I don’t have the answer for this, except we should create and encourage the best safety culture possible.  I think this helps construction to take pride in their work, and their (and their friend’s) safety.

Here’s my top 5 gifts for Christmas in the (my) occupational hygiene world of construction:

  1. A new carbon monoxide monitor.
    • Not just a “normal” $40 model. A Nest Protect Fire & Carbon Monoxide monitor, which is in the $100 range. This thing is sweet. Talks to you, sends you a text message. Here’s a review from Cool Tools. Or, just buy it here.
  2. High flow air pump, Gast model.
    • I have some other flow rate pumps up to 5 liters per minute (LPM), but this one is great for flow rates 10-up to 28 LPM (depending on the model). Good for high volume area type samples and vacuum wipe sampling. You must have 110 power available, but once calibrated, it’s a done-deal. They can be bought for under $250. Grab a rotometer too, if you don’t have one.gast pump
  3. Wireless response system to use during training.
    • Attendees have a wireless response keypad and the trainer can ask a multiple choice question. It allows the audience to reply. The results then show up on the screen. Great for anonymous responses, or a general overview from your audience. There are several vendors, here’s an example, and the leader in the industry is Turning Point. I think these are in the $500-$1,000 range.
  4. A bulk asbestos example kit.
    • A bunch of “typical” building materials which are asbestos containing. In sealed glass jars, of course. I don’t know where you’d buy this sort of thing. I wish I would have kept all of my samples over the years.
  5. A dedicated short term silica sampling kit.
    • SKC has a new sampler which can sample at a higher flow rate  of 8 LPM, compared with the usual 2.5, or 1.8 LPM. (which, if you think through the math; allows you to achieve a detection limit with a lower sample volume, and a shorter time duration) Unfortunately, you must purchase a new SKC Leland pump/charger, PPI sampler, calibration junk. Total cost is probably in the $2,000 range.

 

Confession: I missed the assessment of this hazard the first time.

Awhile back I performed air sampling during aluminum welding. The welders were cordial and let me crawl over their welding equipment, poke around old boxes of wire and metal stock. I did not think there were any “real” hazards. We did find some airborne levels of various metals. From the picture can you tell who did the most welding?

welding mce

After I had performed the sampling and the report was sent, I was asked if I had checked for ozone (O3)? I admitted I hadn’t and asked if it was an issue? Well, apparently it is (or rather, might be).

I went back to the shop, begged for another chance, and performed ozone sampling. It wasn’t difficult, but eating crow was the hardest part.

More information on the subject can be found at: NIOSH, UK- HSE. Ozone is formed when the UV radiation hits oxygen. The ACGIH TLV is variable (see table below)ozone acgih, and the OSHA PEL is 0.1 ppm.

Health: Ozone, O3, can cause lots of different respiratory illnesses. These can include a decrease in lung function, aggravation of asthma, throat irritation/cough, chest pain, shortness of breath, inflammation of lungs, and a higher susceptibility to respiratory illnesses. ACGIH classifies it as an A4, or not a suspected carcinogen.

Luckily the results were found to be non-detectable (“IH talk” for none-found). Which only means I didn’t find it, not that it is not there. I sampled for a long time (530 minutes) because they were working 10 hour shifts. But, they only welded for a total of approximately 1.5 hours during that time.

If welders are in a confined area, or a small space with limited ventilation, the results might be significantly different.

 

I am the current chairperson of the AIHA Consultant’s Special Interest Group (Consult SIG). We conducted a survey and asked the AIHA membership of industrial hygiene consultants what their needs are, and how, as a group, we could help them. A summary of the survey result findings was just published in the November, 2014 AIHA’s, The Synergist, titled, “What IH Consultants Want“.  

We didn’t make the front page. But hey!, we weren’t on the last page either (second page to back, ha).

Nov 2014 Synergist

I cannot publish it here due to copyright infringement, but email me if you want information on the results of the survey.

Instead of explaining how to calculate safe levels of chemical mixtures, this will be a reminder.

The American Conference of Governmental Industrial Hygienists (ACGIH) in their Threshold Limit Values (2014), has an excellent explanation of how to calculate a safe level of exposure. However, in summary, if separate chemicals have the same health effects (effect the body in the same way), they may do three things:

  1. Additivity – the sum of their exposure & health effect is A+B. More on this below.
  2. Synergy – the sum of their exposure is MORE than A+B. This is bad, and hard to calculate.
    • Similar in principle to smoking and asbestos. If you smoke and have asbestos exposure, you are worse than just the additive.
  3. Antagonism – the mixed chemicals cancel each other out. It usually never works this way.
    • But, as a terrible example, it would be like acid rain dissolving styrofoam. (I don’t think that’s true, BTW)

Back to Additive (Additivity):additive

If two chemicals (or more) in a mixture have similar health effects (central nervous system, or effect the kidneys, for example), then, until you know otherwise, you should assume they have additive effects. Have your favorite Industrial Hygienist use your air monitoring data to calculate the additive effects using the ACGIH Additive Mixture Formula.

This is useful for combining both full shift air monitoring data, short term, and ceiling exposures. Extreme caution should be used if the chemicals are carcinogenic (as low as reasonably achievable (ALARA) is best here), or if they are complex mixtures (diesel exhaust).

It’s a bit confusing, but worthy of reminding ourselves of chemical mixtures.

I’m slow to the game, and frankly, not that good at it. So, excuse my stumbling.

I’ll be posting on this site, as well as pictures on Instagram (user: Alden Strealy, #IHConstruction)instagram

and Facebook.

Facebook

 

This hazard is somewhat difficult to understand. There are number of reasons for the confusion, but the easiest way to explain it is to realize that:

Summary:

Diesel exhaust = Diesel particulate matter (DPM) = lots of different chemicals & particulates

AND: There is not a perfect way to measure the exact exposure.

The Long Story:

The term ‘diesel particulates‘ includes the following (not a comprehensive list):

  • elemental carbon (the most reliable method for testing occupational exposure to exhaust, Birch & Cary 1996)
  • organic carbon
  • carbon monoxide (CO)
  • carbon dioxide (CO2)
  • hydrocarbons (PAH)
  • formaldehyde
  • oxides of sulfur & nitrogen

You can quickly see that these are very different substances, and to make it more confusing, you can change the amounts by:

  • the fuel (on road/off, low emission fuel, biodiesel)
  • the motor type
  • the tuning of the motor (& dynamic versus idle), new motor restrictions
  • scrubbers, etc.

In addition, there are not any well-established occupational exposure limits specifically for diesel exhaust. However, the International Agency for Research on Cancer has classified “whole diesel engine exhaust” as a carcinogen (cancer causing), so there is reason for concern. Most of the research and rules are in the mining industry, which uses a lot of diesel equipment and the exhaust really has no where to go.

  • OSHA = none, but they have a hazard bulletin, and of course, some of the components have exposure limits
  • MSHA = 0.4 mg/m3 for total hydrocarbons and 0.3 mg/m3 for elemental carbon
  • Canada (CANMET) for respirable combustible dust (66% of respirable dust in mines is from diesel exhaust) = 1.5 mg/m3
  • ACGIH = none (for now)
    • 1995 proposed 0.15 mg/m3 (for diesel particulate matter)
    • 1996 proposed lowering it to 0.05 mg/m3 (for diesel particulate matter)
    • 2001 proposed a different limit of 0.02 mg/m3,
      • but for elemental carbon and
      • said it was a suspected carcinogen
    • 2003 withdrew proposed limit- citing not enough scientific information

Bottom line:

  • control the exhaust & where it goes (better fuel, better mechanical, scrubbers, ventilation).
  • most exposures to diesel are below the (now retracted) ACGIH TLV of 0.02 mg/m3 (or 20 ug/m3) (Seshagiri & Burton, 2003).
  • If you have a confined area, unusual concerns, or a particularly stinky situation; measure for multiple parameters (CO, CO2, elemental carbon and maybe NOx, and SOx). Compare these to their respective limits and classify the exposure (describe the conditions)

Do you smell dirty clothes in your indoor building? Do you suspect your heating ventilation and air conditioning system of causing the smells?

It might be what’s called, “Dirty sock syndrome”. Typically found in high humidity locations. A brief video overview can be found here (You Tube 2:03)

Lawrence Berkeley National Laboratory has good information on indoor air quality and how it affects people as they work. They also have some scientific information about how improving the indoor space (by ventilation, temperature, particles, etc) can create a better environment.

AIHA has a “Position Statement on Mold and Dampness in the Built Environment” (March, 2013).  It lays out the reasons to control moisture in a building, and some basic steps for remedy (spoiler: air sampling doesn’t usually help).

Bottom line: Check your coils before replacing your entire system. Replacing these might be cheaper. Or, sometimes they can be cleaned, but it is a strict protocol. One possible solution is here (I do not endorsement, or recommend this particular product/brand. Do your own research).

Unfortunately I have no problem finding an appropriate picture for this blog on Ebay. People are weird. Yuk.

dirty sock

I regret I don’t have the energy to post every question and situation on this site.

However, occasionally there are very unique questions. I won’t say how I answered them, but I will offer some considerations. Here’s are my two favorites from the recent past:

  1. My construction crew is working on a “special TI (tenant improvement)”, alongside an elephant who has Turberculosis (TB). What personal protective equipment (PPE) do my workers need to wear?
    • Is the TB active
    • Does TB transfer from people to animal, and/or vice versa
    • How much contact (distance, time, amount of touching, etc) will the workers have with animal?
    • Will you offer prophylactic shots? (to the employees, of course)
  1. We are going to be excavating the carcasses of dead sheep. What type of PPE will my excavator operators need to wear while performing these tasks?
    • How large of an area (2-3 football fields)
    • How long have the carcasses been in this area
    • Any additives to the soil/area
    • Will workers be in contact with dead animals?
    • Will workers need to enter the excavation?
    • Will you use a multigas meter (4 gas)?

elephant

I’d love to hear your best (or worst) questions.

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