Mold a concern in Lake schools, though district officials say it’s not a problem

November 7, 2010

Lake County (Florida) By Denise-Marie Balona, Orlando Sentinel

Lake County school employees, parents and students have complained hundreds of times about mold and other indoor-air quality problems in local schools in recent years — sometimes repeatedly, records show.

A recent Orlando Sentinel investigation shows that mold, which experts say can cause health problems ranging from itchy eyes and runny noses to respiratory distress and infections, is a chronic concern across Central Florida.

A Sentinel review of Lake school documents, including maintenance work orders and independent environmental reports from August 2007 to August 2010 shows that:

•Nine schools and several district-level offices — the most of any Central Florida county — have had elevated levels of some of the most potentially dangerous types of mold.

•Numerous schools continually ask the district to investigate mold and other indoor-air-quality issues such as odors, high temperatures and high humidity.

•Workers frequently repair a variety of leaks and air-conditioning malfunctions — two of the most common causes of air-quality problems such as mold, which thrives on moisture, including humidity.

•It’s difficult to get a full picture of Lake’s mold problems. Some records are hard to locate, partly because they are not in the district’s relatively new electronic databases. Also, work related to mold and air quality is categorized in different ways so it is time-consuming to track. For example, work might be labeled as an air-quality issue or filed as a plumbing or flooring issue.

•The district generally takes a few days to several weeks to handle mold and air-quality problems. At times, it takes months. Almost three months passed before workers recently replaced some ceiling tiles at Beverly Shores Elementary in Leesburg that had grown mold from a water leak.

Despite the findings, district leaders say Lake responds immediately to complaints and currently has no mold problems.

“We’re not aware of any unaddressed issues and we are diligently working to make sure our schools are safe and free from mold,” district spokesman Chris Patton said.

Officials have downplayed the number of complaints, saying reports of mold and moldy odors can turn out to be dirt and the stink of too many air fresheners — or something else.

At times, it is tough to determine what exactly is causing flu-like symptoms in teachers and students — Florida air is full of allergens. Many complaints, however, turn out to be legitimate. How effectively they are addressed varies.

At least occasionally, workers have to fix the same issues in the same locations, which suggests they may not have been handled adequately the first time.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


Sewage Backup Cleaning Is Owner’s Problem

November 7, 2010

Home Didn’t Have Important Equipment

COCOA, Fla. — A Central Florida woman in her 70s is not only out of her house because of a sewage backup, but she said she now has the city of Cocoa hounding her to throw away almost everything she owns.

The home of Carolyn Rys has become a house of horrors: dried sewage on the floor, black mold growing and buckling furniture.

Ten days ago, sewage backed up into the home several inches deep.

City workers moved the now-toxic furniture and belongings into the front yard.

A notice from the city’s code enforcement department arrived Thursday ordering the “junk” removed by Oct. 28, or fines could be levied.

“I wish I could run away from home,” said Rys, 73.

A city official said the notice was premature, and Rys can have extra time.

The official said although it was city equipment that failed, the home did not have a sewage backup preventer, and it’s the homeowner’s responsibility to clean it all up.

The city said it has spent $7,000 helping with the initial clean up at two homes, including Rys’.

Rys said she has no money for repairs or cleanup, and is afraid she will lose her home altogether.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


Cleanup of mold at Guilmette School could cost up to $2M

November 7, 2010

Cleanup of mold at Guilmette School could cost up to $2M

By Mark E. Vogler
mvogler@eagletribune.com The Eagle Tribune

LAWRENCE — Ridding the Guilmette School of mold could cost more than $2 million, according to several School Committee members.

An e-mail by interim School Superintendent Mary Lou Bergeron on Tuesday informed members a full cleanup of the school might cost “in the vicinity of $1.9 million.”

But James Vittorioso, the most senior member of the committee, said last night that he’s heard the final bill could go as high as $2.5 million.

“It’s another devastating blow to the good, hardworking citizens of Lawrence,” Vittorioso said.

“This is a mess that’s going to put us further in the hole. And those workers who are doing the cleanup are going to have a very good Thanksgiving and a happy Christmas,” Vittorioso said.

Bergeron said she remains hopeful that the school — which serves 1,150 students in grades one through eight — will reopen Monday as a cleanup crew of 150 to 175 people continues to work around the clock to make the school safe.

“In terms of the costs, we are working with the insurance adjuster at this time, so I am not ready to put out a final figure,” Bergeron said last night, when asked how much the cleanup will cost.

Bergeron met late yesterday with an industrial hygienist and representatives of the company involved in the cleanup. The School Department’s insurance adjuster also was on the premises.

“At this time, the work is moving ahead on schedule with the goal of clearing the building this weekend,” Bergeron told The Eagle-Tribune.

“We had a couple of spots where mold was found this week: behind cabinets in the lower level and on pipe insulation in the ceiling on the first floor. The cabinets have been removed and the wallboard remediated in this area. The pipe insulation is scheduled for removal tomorrow, so the final cleaning can take place on the first floor and lower level,” she said.

Who’s responsible and ultimately liable for the mold — the second such occurrence at the school in seven years — may wind up being contested in court. Built in 2002, Guilmette School also closed in October 2003, when mold was discovered in a computer lab that was flooded by a burst sprinkler.

School Committee Vice Chairman Sammy Reyes said members were informed by Bergeron this week that some of the issues related to the problem involved “maintenance versus hidden mold.”

Reyes said Bergeron also mentioned there were some concerns that structural deficiencies in the building might be responsible for some moisture buildup that is allowing mold to grow. Bergeron told members she would seek legal advice on possible actions the School Department could take against the contractor overseeing the school’s construction, according to Reyes.

“I have a lot of questions about what’s happening at Guilmette School, which is in my district,” Reyes said.

“Is it a mold problem or is it a maintenance problem? I would like a clarification on that. I’d also like to know whether this is a much bigger problem than we anticipated. With 150 to 175 people working at the site, that’s a lot of people,” he said.

“This causes me to have other concerns. I didn’t know this was the second time the school has had a mold problem. I will be asking questions about that. I will also be asking the superintendent to give us an update of our older buildings to see their condition,” he said.

Vittorioso last week called on Mayor William Lantigua, who chairs the School Committee, to investigate conditions in each of several city schools built about the same time as Guilmette, to see whether there might mold problems that were overlooked.

Lantigua could not be reached for comment last night.

Meanwhile, Bergeron has worked out a contingency plan for relocating students should Guilmette School not open Monday.

“I don’t think they’ll be going back on Monday because I think it’s a bigger problem than they stated,” Vittorioso said last night.

“And if the cleanup goes into next week, it’s going to wind up costing up to $2.5 million — because somebody didn’t do their job,” Vittorioso said.

“I think this is a building issue. And the question of who’s going to pay for it, I think will end up in the courts. But it’s still going to cost us thousands of dollars. This is a catastrophe that should never have happened. I just hope we don’t have the same problem at the new high school,” he said.

•John P. Lapotaire, CIEC
•Certified Indoor Environmental Consultant
•Microshield Environmental Services, LLC
www.Microshield-ES.com


Toxic schools: Grand jury laid out mold problem; lawmakers didn’t act

November 7, 2010

In 2003, a grand jury blasted the Broward County school system for taking too long to get rid of mold in classrooms and failing to repair leaky roofs and faulty air conditioners.

The panel outlined its concerns in a 44-page report, strongly recommending changes the state of Florida needed to make to force school districts to improve indoor-air quality while underscoring that children were especially vulnerable to the potentially harmful effects of mold.

Although Broward schools have since spent millions of dollars trying to fix its problems, the more sweeping statewide grand jury recommendations have been largely ignored.

A handful of South Florida lawmakers introduced bills in 2004 that would have required schools to aggressively monitor and address mold problems and even file progress reports with the state.

But the legislation never went anywhere. A Senate analyst pointed out that repairs would be expensive and Florida would be setting itself up for lawsuits if it identified its air-quality problems.

So, today, there still are no statewide rules in Florida governing how public schools should monitor, detect and handle air-quality problems in one of the hottest, most humid states in the country.

And years after the grand jury report, Florida schools continue to battle chronic mold and water-intrusion problems, according to an Orlando Sentinel investigation.

Wolfgang Halbig, a former risk manager for Lake County schools who is now a school-safety consultant, argues that if the Florida Legislature does not make districts fix mold problems, they will get worse.

The situation, he warned, is already being exacerbated by districts’ attempts to save money by raising the temperature in schools and shutting off the air conditioning in at least some portable classrooms at night, on weekends and during kids’ winter and summer vacations.

In recent years, Central Florida teachers, parents and others have filed thousands of complaints about indoor-air quality in schools — blaming their runny noses, headaches and respiratory distress on mold discovered in classrooms, cafeterias, media centers, locker rooms and even nurses’ quarters.

“The state needs to really get a handle on how serious the toxic mold problem is in Florida,” said Halbig, a former executive director of the National Institute for School and Workplace Safety who said he was let go from his job in Lake last year, in part because he confronted higher-level administrators about the district’s mold problems.

District officials said Halbig was let go simply because his annual contract expired. He never discussed mold issues with schools Superintendent Susan Moxley, said the district’s executive director of human resources, Laurie Marshall.

Although the presence of some mold in the air is normal, experts say it should not be allowed to multiply indoors. And mold found growing in a building should be removed immediately.

Joe Joyner, a recent past president of the Florida Association of District School Superintendents, agreed that the Legislature holds the key to the problem. But there is no need for a new law, he said.

Lawmakers, facing major budgetary shortfalls, have slashed funding for school maintenance and renovations during the past several years to help districts afford basic operating costs such as electricity, paper and teacher salaries.

“I don’t see any problems with the standards at all,” said Joyner, referring to guidelines set by various environmental-health groups such as the U.S. Environmental Protection Agency. “I see a problem with the funding to make sure we can maintain our buildings.”

Researchers at the University of Central Florida, who discovered in a 2006 study that schools in Florida and some other states are chronically moldy and humid, have said that without substantial funding increases for maintenance, the situation will not improve much.

Tallahassee attorney Mark Levine, who has represented school employees in mold-related lawsuits, said the root of the problem is fourfold: poorly trained maintenance workers, long-neglected buildings, air-conditioning systems that were not designed for Florida’s weather and administrators who are slow to acknowledge problems.

Levine said doctors have testified in court that school officials have refused to order environmental tests to help decide whether employees with respiratory distress could go back to work.

“If they [school officials] do have these environmental tests, it’s going to prove positive and then a cleanup must ensue,” Levine said. “They don’t have money for a cleanup, so they’d just as soon not know.”

Halbig said Lake district officials are so anxious about the public finding out about their mold battles, they advise employees to avoid using the word “mold” in public documents, including the e-mails they send to each other.

The lack of state regulation has left districts to devise their own methods for dealing with indoor-air quality.

In some cases, the Sentinel found during its investigation, districts allowed mold problems to linger for weeks or months. They also allowed janitors to remove mold without protective gear and workers to paint over mold and water-damaged areas instead of removing them — all of which can put students or employees at risk, according to the U.S. Environmental Protection Agency.

Denise Robinette, a Palm Beach County mom who started the nonprofit HealthyLiving Foundation in 2002 to educate people about indoor-air quality in schools and other buildings, said the state should require independent inspections and oversight.

“We allow the fox to watch the henhouse, with each school remediating where they ‘see’ fit — and most of them cover their eyes,” she said. “Why can’t the Health Departments look at schools? Why can’t there be third party inspections?”

Industry leaders and scholars agree that schools nationwide could drastically reduce the mold in buildings if they would do a better job repairing roofs and air conditioners, sealing up windows and doors, and fixing all water damage immediately.

“Mold has been, and continues to be, a maintenance issue,” said Cliston Brown, a spokesman for one of the country’s largest trade groups representing the property casualty industry, the Property Casualty Insurers Association of America.

“Cleanup is fairly straightforward if water issues are addressed promptly,” he said.

Air-quality experts say one thing that will force educators, who are under immense pressure to boost test scores, to focus on the problem is proof that air quality affects student performance.

That is why the Indoor Air Quality Association, a nonprofit education and research group in Maryland, recently teamed up with The University of Tulsa to study whether there is a link between air quality and test scores and student absenteeism. At least some of their findings will be released in several weeks.

Along with faster repairs, parents want schools to do a better job keeping them informed — especially when large amounts of mold or the more dangerous, toxin-producing types are discovered on campus.

“Even the small amount could be causing harm to the students and staff,” said Richard Bolam, president of the PTA at Kaley Elementary in Orlando. “Toxins equal poisons and who knows the long-term effects.”

The National Clearinghouse for Educational Facilities and various environmental-health agencies suggest that schools release and discuss what is found during inspections —especially when a private contractor was hired to do it — as quickly as possible.

But that often does not happen, parents and teachers said.

Lake County mom Sheila Baker wishes her son’s elementary school had been up front about its mold problems years ago. He kept getting sick at school and, today, as an adult, he still has breathing problems.

His former school, Roseborough Elementary in Mount Dora, was closed in 2000after being plagued by mold and other problems.

“It was later determined that mold was in the classroom, but it was not disclosed how bad the problem was,” Baker said. “My son still has to use an air purifier in his room and he is now [an adult].”

A South Florida legislator who co-sponsored one of the bills filed in 2004 to require schools to make improvements said state leaders could not pinpoint back then the magnitude of schools’ air-quality problems.

If they are, indeed, widespread and chronic, they should be fixed — no matter what it costs, said state Rep. Mary Brandenburg, D- West Palm Beach.

“But what scares me is where we, as taxpayers, would get the money to do those repairs,” she said. “I shudder to think about shutting down hundreds or dozens of schools and rebuilding them. Think of what that would cost.”

Bill Smith, facilities director for Okaloosa County schools in the Florida Panhandle, says revamping his district’s air-quality program about 10 years ago took a lot of work initially.

But, afterward, building maintenance became easier, he said. Complaints dropped drastically.

After Okaloosa adopted the U.S. Environmental Protection Agency’s “Tools for Schools” program, it replaced roofs, tightened doors and windows. It even changed the size of ceiling tiles and started using tile in portable classrooms instead of carpet to reduce allergens such as mold.

Complaints about faulty air-conditioning systems and teachers and students with flu-like symptoms dropped from 75 in 1994 to fewer than 15 in 1999 — an improvement that led the district to become one of the first in the country to earn an award for air-quality excellence from the U.S. EPA.

The agency’s “Tools for Schools” program, which is offered for free to schools nationwide, is the same one the grand jury in Broward recommended seven years ago.

Today, Smith said Okaloosa only gets a handful of complaints a year.

“EPA will bend over backwards to help you,” he said.

Denise-Marie Balona can be reached at dbalona@orlandosentinel.com or 407-420-5470 or 386-228-5008.

•John P. Lapotaire, CIEC
•Certified Indoor Environmental Consultant
•Microshield Environmental Services, LLC
www.Microshield-ES.com


The ACAC Introduces the Council-certified Environmental Thermography Consultant (CETC)

October 25, 2010

What is a CETC?
A Council-certified Environmental Thermography Consultant (CETC) investigates structural and environmental issues in the built environment using infrared thermography. For example, a CETC can identify mold and moisture issues during a commercial investigation or a home inspection that may be invisible to the naked eye. A CETC has verified knowledge of thermal and infrared physics as they apply to the building sciences. A CETC has verified knowledge of the selection, calibration and operation of thermal imaging equipment. Finally, a CETC knows how to apply the principles and equipment of infrared thermography to a building investigation.

Each CETC has demonstrated at least eight (8) years experience conducting field investigations involving infrared thermography. Field experience documentation is reviewed by the CETC certification board.

To earn the Council-certified Environmental Thermography Consultant (CETC) designation, every candidate must:

•Demonstrate at least eight (8) years of verifiable field experience in environmental thermography

•Pass a rigorous examination based on broad industry knowledge rather than a course curriculum

•Earn the unanimous approval of the CETC certification board

•Re-certify every two years

•Participate in 20 hours of professional development activities each year

•Maintain the highest ethical standards

The CETC certification is accredited by the Council for Engineering and Scientific Specialty Boards (CESB), a nationally recognized independent accreditation body. ACAC certifications are the ONLY designations in the indoor air quality field to earn CESB accreditation.

What is a CETI?
A Council-certified Environmental Thermography Investigator (CETI) investigates structural and environmental issues in the built environment using infrared thermography. For example, a CETI can identify mold and moisture issues during a commercial investigation or a home inspection that may be invisible to the naked eye. A CETI has verified knowledge of thermal and infrared physics as they apply to the building sciences. A CETI has verified knowledge of the selection, calibration and operation of thermal imaging equipment. Finally, a CETI knows how to apply the principles and equipment of infrared thermography to a building investigation.

Each CETI has demonstrated at least two (2) years experience conducting field investigations involving infrared thermography. Field experience documentation is reviewed by the CETI certification board.

To earn the Council-certified Environmental Thermography Investigator (CETI) designation, every candidate must:

•Demonstrate at least two (2) years of verifiable field experience in environmental thermography

•Pass a rigorous examination based on broad industry knowledge rather than a course curriculum

•Earn the unanimous approval of the CETI certification board

•Re-certify every two years

•Participate in 20 hours of professional development activities each year

•Maintain the highest ethical standards

The CETI certification is accredited by the Council for Engineering and Scientific Specialty Boards (CESB), a nationally recognized independent accreditation body. ACAC certifications are the ONLY designations in the indoor air quality field to earn CESB accreditation.

•John P. Lapotaire, CIEC
•Certified Indoor Environmental Consultant
•Microshield Environmental Services, LLC
www.Microshield-ES.com http://www.CFL-IAQ.com


Healthy Homes Specialist (HHS) Credential

October 25, 2010

Recognizing the important connection between housing and health, the National Environmental Health Association (NEHA) created the Healthy Homes Specialist (HHS) Credential for health and housing professionals in the public, private and non-profit sectors. Persons with the HHS Credential have shown that they understand the connection between health and housing, and take a holistic approach to identifying and resolving problems that threaten the health and well being of residents.

The HHS Credential was developed in partnership with the National Center for Healthy Housing (NCHH) and the National Healthy Homes Training Center and Network (“Training Center”).

The NCHH and the Training Center offer the Essentials of Healthy Homes course, followed by an exam, and award the HHS Credential to those who pass.

The following is adapted from NEHA’s HHS Credential Page:

Is this credential right for you?

Healthy Homes Specialist (HSS) Credential – Eligibility

To be eligible to obtain the Healthy Homes Specialist Credential, you must complete the Application for Healthy Homes Specialist (HSS) Credential and meet the following criteria:

•Be at least 21 years old;
•Have five years of experience in housing, environmental health or public health;
•Achieve a score of 70% on the qualifying examination; and
•Successfully complete an on-line assessment exercise.

If you are a professional in one of the groups below, you may be interested in attaining the Healthy Homes Specialist (HHS) Credential:

1) Individuals certified or licensed as lead risk assessors, radon measurement professionals, or mold professionals—These individuals have developed expertise in a specific environmental hazard in the home and are interested in expanding their capabilities and services.

2) NEHA Registered Environmental Health Specialists seeking to demonstrate their experience and expertise in housing.

3) Public health nurses seeking to expand and document their expertise related to healthy homes.

4) Health department and housing agency staff seeking to establish their expertise in healthy homes or better position their agencies to receive U.S. Department of Housing and Urban Development (HUD) Healthy Homes grants.

5) Licensed pest management professionals seeking to expand their services—Resolving pest problems using Integrated Pest Management (IPM) techniques relies on a knowledge base similar that of the Healthy Homes Practitioner.

6) Certified home inspectors seeking to expand their business by adding healthy homes criteria to their standard services.

7) Home performance specialists

8) Home energy raters

9) Weatherization professionals

10) Remodeling and rehab professionals

For more information visit NEHA’s HHS Credential page.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


Healthy Home Basics – Duct Cleaning

October 25, 2010

By John Bower

Ducts can get extremely dirty. This generally happens for two reasons: 1) the ducts are leaky, and pollutants get sucked into them from dusty, contaminated attics, crawl spaces, and building cavities, and 2) pollutants from the living space are pulled through the entire duct system because of inefficient filtration. Well-sealed ducts in a forced-air heating/cooling system fitted with a high-efficiency filter can often pass a white glove test as long as two years after installation.

A Canadian study recommended that if supply ducts are dirty, they could be contaminating the indoor air, so duct cleaning is probably a good idea, and if return ducts, the air-handler fan, and the coil are dirty, the dust could be affecting performance and should be cleaned.

In a typical forced-air system with leaky ducts and an inefficient filter, the ducts are usually contaminated with a wide variety of particulates and microorganisms—all directly exposed to the air being breathed by the occupants.

Whether the cleaning of ducts actually results in improved indoor air quality is still being debated. While the heating/cooling system’s performance is often better after cleaning, it is more difficult to say if the indoor air is cleaner. This is because there are often other factors that contribute to indoor air quality, such as indoor pollutant sources, occupant activities, and outdoor air quality. Metal ducts can generally be cleaned fairly well, but with duct board, which is lined with porous fiberglass, thorough cleaning is impossible. One study found that microbial contamination of duct board returned to precleaning levels within 6 weeks.

The EPA suggests that you should consider having your ducts cleaned if there is substantial visible mold growth inside the ducts or other components of the heating/cooling system, if the ducts are infested with vermin, insects, or rodents, or if the ducts are clogged with excessive amounts of dust or debris, or if there are actually particles being released into the air. They also point out that there is no evidence that cleaning ducts will result in improved health for the occupants. Still, it makes sense that you would want the air you are going to breathe to be passing through clean ducts.

Many cities now have businesses that specialize in duct-cleaning. They typically have large truck-mounted vacuums connected to long hoses that are run indoors. Sometimes they agitate the ducts, or use rotating brushes or air hoses, to loosen the accumulated debris, then the powerful vacuum draws the pollutants out into the truck. Vacuuming alone isn’t nearly as effective as mechanically agitating the ducts with a brush, but brush/vacuuming can cost up to 4 times as much money. Be sure no small pets are loose during this process because the vacuum can be powerful enough to pull them into it. This type of cleaning is usually sufficient to remove the majority of contaminants, but a few hypersensitive people have found it necessary to dismantle their duct system and thoroughly clean the residual pollutants wedged in small cracks and crevices.

Some duct cleaners like to spray a cleaning chemical, sealer, encapsulant, or disinfectant inside the ducts. These may or may not be recommended, because they can be pollutant sources themselves.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


How Pollutants Get Into Houses

October 25, 2010

By The Home Ventilating Institute (HVI)

Indoor air quality is often characterized by pollutants in the air. Clearly, if the sources of pollutants are minimized, the air will be easier to keep fresh, clean and healthy. In order to determine the best indoor-pollution control strategy, it is helpful to place airborne indoor contaminants into three categories:

1.Those released from materials inside the house;

2.Those brought into the house by air pressure differences; and

3.Those released by people.

Pollutants released from materials in the house

Many cleaning products and household furnishings release contaminants directly into the indoor air. Formaldehyde is often given off by kitchen cabinets. Wallpaper is treated with fungicides. The odor associated with some flooring materials may consist of over a hundred different volatile organic compounds (VOCs). Disinfectant and pesticide aerosol sprays typically contain hazardous ingredients.

The good news is that there are many alternative products on the market that are much more benign that can be used to build, furnish, and maintain our houses.

For pollutants that are unavoidable, a mechanical ventilation system that removes and expels them outdoors is essential to minimize their negative effect.

Pollutants brought indoors by air pressure differences

Some air pollutants originate outdoors but get brought indoors by air pressure differences. For example, when you turn on a clothes dryer, it blows a certain amount of air out of the house. This creates a slight negative pressure in the house, and an equal volume of air gets sucked in (infiltrates) from the outdoors through small gaps and cracks in the house. When a house is depressurized, the infiltrating air can bring in radon, termiticides, and biological pollutants such as mold. Particles or gases from insulation can also be sucked indoors by air pressure differences.

Combustion gases often migrate into the living space from a furnace, water heater, or wood stove, even though they are supposed to be expelled through a chimney. If the air pressure indoors is less than that outdoors, the gases will have difficulty going up the chimney and can remain in the house.

Pollutants released by human and animal metabolism

Human beings and pets give off a wide variety of pollutants. Our exhaled breath contains dozens of chemical compounds. These are normal by-products of our metabolism, and they all contribute to indoor air pollution. The best way to counteract the pollutants given off by people is to dilute the pollutants with ventilation air.

The concentration of “people pollutants” in a house depends on the number of people inside a house, the size of the house, and the behavior patterns (frequent showers, activity levels, and so on). People also bring pollutants indoors attached to their bodies, such as cigarette smoke, VOCs, perfume, and exhaust gases. Once contaminated clothing and bodies are indoors, the pollutants will be released slowly, contributing to indoor pollution. People can also track pollutants indoors on their shoes (e.g. lawn chemicals, animal waste, road dust containing asbestos, lead, rubber, etc.), and deposit those pollutants in carpeting and other surfaces.

Exchanging the air in a house is important to dilute the concentration of pollutants found in the indoor air. If indoor-pollutant concentrations are too high, they can negatively affect the health of occupants. Indoor air quality is improved by reducing or eliminating the source of pollutants, filtering, and supplying oxygen-rich, fresh air through mechanical ventilation.

With proper attention to reducing the sources of pollutants, the indoor air quality will be improved. The Home Ventilating Institute recommends the exclusive use of products which are HVI-Certified. Consult with your builder or contractor for appropriate HVI-Certified product for your application.

Adapted from: Understanding Ventilation: How to design, select, and install residential ventilation systems by John Bower © 2010 The Home Ventilating Institute (HVI).

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


Your Indoor Air

October 25, 2010

Though invisible, it is the most basic, life-sustaining feature of your home. Preventive measures, ventilation, and daily habits play a role in protecting your home’s precious supply.

THREATS TO THE BREATHING SPACE (or ‘Things to Worry About’)

1. Dirt and Dust: Outdoor soil can contain fertilizer, pesticides and more. Tracked in, it becomes part of the indoor dust, which already holds dander, dust mites, plastics, possibly lead or asbestos from indoor sources, etc. As dust becomes airborne, these substances may enter the body and cause symptoms ranging from asthma and allergy _are-ups to even nervous system damage and cancer.

2. Mold: Airborne mold spores and mold fragments can trigger asthma and allergy episodes.

3. VOCs: Volatile organic compounds are found in cleaning liquids, paints, solvents and many more household supplies. They volatize or “o_ gas” into the air. Not all are harmful, but at high levels, many can cause a range of symptoms from short-term irritation to more ominous organ damage and cancer. The impact of lower levels and of mixtures of VOCs is under discussion or unknown, but reducing exposure is generally a good policy.

4. Formaldehyde: This VOC is used in a wide variety of household products. Manufacturers have scaled back — but in many cases not eliminated — its use. It is a known carcinogen and may also trigger asthma attacks and irritate the eyes and respiratory system. O_ gassing can continue for years, decreasing over time.

5. Asbestos: Found in some insulation, _reproo_ng materials, acoustic tile and “popcorn” ceilings, these tiny particles can cause lung-tissue damage and cancer. Asbestos containing materials are harmless as long as they stay intact, but disintegration frees the _bers to enter the airspace and the lungs.

6. Lead: Damaging to the nervous system, lead can enter the air as dust. Blood lead levels have dropped dramatically since the 1980s, indicating that unleaded gasoline and strategies regarding lead paint and lead pipes are working. Continued vigilance in the home is recommended, especially if your home is older.

7. Moisture: Water leaks and high relative humidity encourage mold growth, dust mite proliferation and increased formaldehyde emissions from building materials, furnishings and other household items. These irritants can trigger allergy and asthma symptoms.

8. Carbon Monoxide: Fuel-burning appliances and idling cars in attached garages can release carbon monoxide into the home, causing about 500 preventable deaths each year. The gas causes thousands more to become ill.

9. Radon: Radioactive gas can cause lung cancer — no smoking necessary. The EPA estimates radon causes 21,000 preventable deaths each year. Radon testing is quite inexpensive and almost effort-free.

3 ACTION PRINCIPLES (or ‘The General Idea’)

1. Eliminate; Often, the most reliable method of protecting yourself from unhealthy exposures in the home is simply to make sure harmful materials and contaminants are not present. Building or furnishing carefully with less hazardous materials, as well as proper cleaning eliminates many health threats.

2. Separate; When removal is not advisable or not possible, reduce exposure by creating a sealed barrier. For example, tight wall construction keeps potentially hazardous insulation particles out of the living space.

3. Ventilate; Reduce remaining air contaminants by regularly letting stale air out and fresh air in. Balancing in and out airflows in this process provides fresh air for your family and prevents a vacuum from forming and drawing air from a dangerous source like the furnace exhaust.

From the Healthy House Institute and the Home Ventalation Institute.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com


Toxic schools: Grand jury laid out mold problem

October 21, 2010

By Denise-Marie Balona, Orlando SentinelIn,

A grand jury blasted the Broward County school system for taking too long to get rid of mold in classrooms and failing to repair leaky roofs and faulty air conditioners.

The panel outlined its concerns in a 44-page report, strongly recommending changes the state of Florida needed to make to force school districts to improve indoor-air quality while underscoring that children were especially vulnerable to the potentially harmful effects of mold.

Although Broward schools have since spent millions of dollars trying to fix its problems, the more sweeping statewide grand jury recommendations have been largely ignored.

A handful of South Florida lawmakers introduced bills in 2004 that would have required schools to aggressively monitor and address mold problems and even file progress reports with the state.

But the legislation never went anywhere. A Senate analyst pointed out that repairs would be expensive and Florida would be setting itself up for lawsuits if it identified its air-quality problems.

So, today, there still are no statewide rules in Florida governing how public schools should monitor, detect and handle air-quality problems in one of the hottest, most humid states in the country.

And years after the grand jury report, Florida schools continue to battle chronic mold and water-intrusion problems, according to an Orlando Sentinel investigation.

Wolfgang Halbig, a former risk manager for Lake County schools who is now a school-safety consultant, argues that if the Florida Legislature does not make districts fix mold problems, they will get worse.

The situation, he warned, is already being exacerbated by districts’ attempts to save money by raising the temperature in schools and shutting off the air conditioning in at least some portable classrooms at night, on weekends and during kids’ winter and summer vacations.

In recent years, Central Florida teachers, parents and others have filed thousands of complaints about indoor-air quality in schools — blaming their runny noses, headaches and respiratory distress on mold discovered in classrooms, cafeterias, media centers, locker rooms and even nurses’ quarters.

• John P. Lapotaire, CIEC
• Certified Indoor Environmental Consultant
• Microshield Environmental Services, LLC
www.Microshield-ES.com