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Monday, March 31, 2008

Hall and Hinchey introduce companion to Senate's TCE legislation (NY)
by Neil Fischbein on Monday, March 31, 2008 [Permalink] [0 Comments]
Earlier this month, a small group of citizens and legislators gathered at the New York home of Debra Hall (Founder of Hopewell Junction Citizens for Clean Water & Clean Air and founding member/co-chair of the New York State Vapor Intrusion Alliance) to announce and unveil legislation requiring the EPA to better protect the public from TCE-contaminated water and air. The new legislation is intended to be the House of Representatives' companion to Senator Clinton et. al.'s TCE Reduction Act.

Here's a video of the press conference announcing the new legislation:


This press release comes from U.S. Rep. John Hall's (D-NY) website:
Standing with Hopewell Junction families who have suffered from cancer and other health problems due to groundwater contamination and vapor intrusion by the carcinogenic chemical trichloroethylene (TCE), U.S. Rep. John Hall (D-NY19) today unveiled legislation to help communities deal with TCE contamination. The TCE Reduction Act, which Hall is introducing with U.S. Rep. Maurice Hinchey (D-NY22), would require the U.S. Environmental Protection Agency (EPA) to set stricter regulations to protect the public from exposure to TCE.

"Growing scientific evidence shows the danger TCE pollution poses to people," said Congressman Hall. "Yet the EPA continues to drag its feet instead of setting a new standard that would help the residents of Hopewell Junction and similar communities throughout the country."

TCE and other contaminants have plagued Hopewell Junction residents as the result of Hopewell Precision’s disposal of painting and degreasing wastes directly on the ground, resulting in a 1.5 mile long groundwater contamination plume. Chemicals have been detected in local drinking water wells and many homes have experienced significant problems caused by vapor intrusion. The site was listed on the Environmental Protection Agency's Superfund National Priority List, a list of the most severely polluted sites in the country, in 2005. Yet residents are still suffering from significant TCE contamination.

"TCE is a pervasive, toxic chemical that cannot be allowed to continue to pollute our communities," said Congressman Hall. "Study has shown that it is a likely carcinogen, can cause nerve damage, lead to developmental difficulties in children, and pose a significant threat to public health. We expect our government at all levels to provide security. When the fire alarm rings, we expect the fireman to show up and put the blaze out. EPA is no exception. But what did EPA do when the alarm rang about TCE spill here and throughout the rest of the country? It recommended more study."

In 2001, a draft EPA Risk Assessment found TCE to be as much as 40 times more carcinogenic than previously thought, but instead of setting a more protective standard for TCE in drinking water, the Bush Administration called for more study. The National Research Council (NRC) was directed to conduct an in depth study of the health studies involving TCE. The final NRC report, issued in 2006, found that "the evidence on carcinogenic risk and other health hazards from exposure to trichloroethylene has strengthened since 2001." The report went on to say, "The committee recommends that federal agencies finalize their risk assessment with currently available data so that risk management decisions can be made expeditiously."

"No action has been taken by the EPA to update the water standard," stated Debra Hall of Hopewell Junction Citizens for Clean Water. "There is no federal standard to deal with vapor intrusion even though this is a very dangerous environmental issue. I applaud Congressman Hall for taking action to force stricter regulations related to TCE. People living here in Hopewell Junction and the entire nation will benefit greatly when this bill becomes law. Stricter standards will allow more homes to be mitigated. It is obvious that legislation is needed to force protection against cancer and other health issues that are caused by TCE."

Hopewell Junction resident Sharon Whalen testified that her father developed prostate cancer after living in her home. The house was also dubbed "the sick house" because everyone living there became almost constantly ill. Whalen's home is impacted by vapor intrusion only and at the highest amount of the entire superfund site.

The TCE Reduction Act addresses both groundwater contamination and vapor intrusion caused by TCE and would require the EPA to:
  • Issue a revised health advisory for TCE within 6 months of enactment.
  • Issue revised draft health standards for TCE in drinking water within 12 months of enactment, and final drinking water standards within 18 months.
  • Issue a health advisory standard for TCE vapor intrusion within 12 months of enactment.
  • Establish an integrated risk information system reference concentration for TCE vapor which is protective within 18 months of enactment.
  • Ensure that all standards set under the bill fully protect susceptible populations (including pregnant women, infants, and children) from the adverse health affects of TCE.

Tuesday, March 25, 2008

2000 X cancer risk increase in Cuddalore's chemical park (India)
by Neil Fischbein on Tuesday, March 25, 2008 [Permalink] [0 Comments]
Thaindian News reports:
People living in and around a special economic zone in Cuddalore are “2,000 times more” likely to be affected by cancer than the normal population, says a report prepared for the Tamil Nadu Pollution Control Board. In a normal sample population, cancer occurs in one person in a million. But in and around the State Industries Promotion Corp of Tamil Nadu known as SIPCOT industrial park nearly 300 km south of Chennai, two in every thousand are likely to have cancer, say anti-pollution campaigners.

The Nagpur-based National Environmental Engineering Research Institute (NEERI) has prepared the report.

The study confirms the decades-old complaints by local residents that pollution from the chemical factories in the park is worst at night, especially in the village of Eachangadu.

The NEERI submitted the report in August 2007 to TNPCB without any public information. It came to light after an RTI plea by the local environment watchdog, Community Environment Monitoring (CEM).

[...]

The NEERI study found that areas near Shasun Chemicals, and the village of Eachangadu, were the worst affected.

Risk levels near Asian Paints and Tagros Chemicals are also high, the report said.

According to the report, children, elderly and the infirm were the most vulnerable. NEERI attributes this to “air transport of pollutants”.

Levels of Benzene - a chemical that causes blood cancer among children - were 125 times higher than safe levels.

Other carcinogens like chloroform, carbon tetrachloride, methylene chloride and trichloroethylene were 881, 553, 32.5 and 21.8 times respectively higher than acceptable levels, the NEERI report said.

NEERI says “the results are a conservative estimate” as “most of the industries are not operating to capacity on days of sampling”.

“If all the industries in the study area function to the full capacity, it may be expected that concentrations of pollutants will increase three-fold,” the institute told TNPCB.
The Community Environmental Monitor website provides this table of the actual pollution levels discovered:

List of Chemicals Detected with Highest Levels Recorded

Name of Chemical

Highest Level (microgram/m3)

Location

Times above safe levels

Benzene

31.174

Asian Paints

125

Carbon tetrachloride

72

Tagros Chemicals

553

Chloroform

74

Shasun

881

Methylene Chloride

133

Tanfac

32.5

Trichloroethylene

24

Aurobindo Chemicals

21.8

Read the full story here.

Monday, March 24, 2008

Lawsuit: TCE in home caused Ontario family's chronic illnesses (Can)
by Neil Fischbein on Monday, March 24, 2008 [Permalink] [0 Comments]
This is hardly breaking news, but we're still catching up on things we missed. Since receiving this press release, we have also obtained a copy of the complaint or, as it's known in Canada, the statement of claim. The facts are just enraging (e.g. TCE levels in the air inside the Vitez's home were discovered above 200 ug/m3). We're still deciding how to make these available on the blog since they are lengthy. In the meantime, if you'd like a digital copy, feel free to contact us.

For now, here's the official press release:
Toxic air and contaminated groundwater blamed for chronic illnesses in multi-million dollar lawsuit

FOR IMMEDIATE RELEASE – MARCH 14, 2008

CAMBRIDGE, ON – Northstar Aerospace, GE Canada and Rozell Inc., are amongst the Cambridge-based businesses named in a multi-million dollar environmental lawsuit. Spearheaded by Denis and Deborah Vitez, the suit points to these businesses as being responsible for groundwater contamination and toxic air in local residents’ homes, and in the case of the Vitez family, resulting in chronic breathing problems, Parkinson’s Syndrome and neurological damages which have escalated over the past five years. The suit claims that the companies were aware that toxic levels of the human carcinogens Trichloroethylene (TCE) and Chromium were seeping into the groundwater in the vicinity of their Bishop Street plants.

The Vitez family is seeking punitive and general damages, citing negligence, failure to disclose information, misconduct, and failure to comply with the Environmental Protection Act, among other claims against the defendants. TCE, a solvent used for degreasing metal parts, is considered a toxic substance and probable human carcinogen under the Canadian Environmental Protection Act. Chromium is also classified by health organizations as a human carcinogen. Due to the companies’ failure to properly handle, store and dispose of the substances, the Vitez family has suffered through years of discomfort and pain, culminating in the diagnoses of asthma and severe sinus infection in Mrs. Vitez, and symptoms indicating Multiple Sclerosis and Parkinsonism – a group of nervous disorders with symptoms similar to Parkinson’s disease – in the case of Mr. Vitez.

Paul Mann, Counsel for the Vitez family, and one of Canada’s top litigators in health-related matters, explains, “These companies knew they were contaminating the water and air with toxic chemicals, failed to warn homeowners that levels were in excess of Ministry of Environment (MOE) standards, and failed to prevent further release of the chemicals after they first learned of the leakage and discharge. Denis and Deborah Vitez may never get their health back as a result and it is time for justice to be served.”

Update: Since many folks have arrived here looking for it, you can now download the Statement of Claim here .

Friday, March 21, 2008

March 26 TCE meeting planned in Collegeville (PA)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
The Earth Times recently reported:
The Department of Environmental Protection will hold a public meeting at 7:30 p.m., on Wednesday, March 26, in Collegeville to update residents on efforts to reduce airborne trichloroethylene (TCE) levels in that area of Montgomery County.

The meeting will be held the Perkiomen Valley Middle School East auditorium, 100 Kagey Road.

"Since releasing our January 2007 air monitoring report, our agency has worked closely with Accellent and Superior Tube to develop emission reduction strategies that would effectively reduce TCE emissions by these narrow tube manufacturers," said DEP Regional Director Joseph A. Feola. "The department has been, and will continue to be, fully engaged in this effort, and will use this opportunity to update the community on the significant emission reductions that have been achieved to date."


Queens residents protest toxic schools (NY)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
Recently, the Queens Tribune (NY) reported:
Advocates and community members gathered Tuesday in front of State Senator Frank Padavan’s Bellerose office to protest his lax legislation concerning environmentally contaminated school sites and to announce a leafleting campaign to educate constituents in Padavan’s district about the issue.

The meeting was hosted by Dave Palmer, a lawyer for New York Lawyers for the Public Interest, which represents community groups dealing with environmentally contaminated school sites. School sites leased by the City do not require the same type of community, political and environmental review processes as schools owned by the City. This loophole allows for schools to be located on contaminated sites posing health threats to children, according to the organization.

“All of that we think places children at risk,” Palmer said.

“Children are most vulnerable to the effects of toxic chemicals.”

In June, the State Assembly passed a bill sponsored by Cathy Nolan (D-Ridgewood) that NYLPI believed strongly addressed the issues surrounding leased school sites. Palmer said community groups also had an assurance from Padavan that he would sponsor an equally strong bill in the Senate, though they say the bill that was past last session did not contain strong enough provisions for community notice, City Council review and environmental review.

Padavan said in a June statement, “Through discussions with the City and environmental advocates, we have crafted legislation that addresses concerns relative to school leasing in the City. The legislation that we have developed ensures that any proposed leased site for a school undergoes a two-phased environmental review process with adequate time for public review and comment on any site remediation plan impacting students, parents and community.”

Advocacy organizations and community groups plan to begin distributing leaflets Saturday throughout Padavan’s district, which encompasses parts of northeastern Queens, in an effort to get his constituents to pressure him to draft legislation that more closely reflects their concerns about leased schools.

At the meeting Tuesday, Katie Acton, whose daughter attended PS 65 in Ozone Park from 1999 to 2002 spoke about the toxins beneath the school that she believes led her daughter to develop asthma. Acton belongs to PS 65 Parents and Neighborhood Against TCE, which now has a lawsuit against the City. The school is located is a former airplane parts factory.

“Leaving the school, her health has improved and so have her grades,” Acton said. “It is my understanding that the Department of Education knew of the contamination before the families.”

It has also been reported that the site of the Information Technology High School in Long Island City, a former factory, is contaminated.

Behr site proposed as Superfund site, Cancer incidence inquiry planned (OH)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
Recently, the Dayton Daily News (OH) reported the Behr Dayton Thermal Products Plant has been proposed to EPA's National Priority List (NPL) for clean-up:
Groundwater contamination in the vicinity of the Behr Dayton Thermal Products Plant is severe enough to merit putting it on the National Priority List of the U.S. EPA's Superfund program, federal officials said.

The list represents the highest level of urgency for cleanups in the nation.

If the U.S. Environmental Protection Agency approves later this year, an effort to cleanup groundwater at the site would rank among five others in Montgomery County on the National Priority List.

There are 22 active Superfund sites in the county where work is being planned or is under way.

Priority sites are considered the worst in the nation in terms of hazard and are eligible for cleanup using Superfund Trust money. The Behr project is still in the investigational stages, which typically can take two years and cost millions, officials said.

So far, the contamination has led to the closure of McGuffey Elementary School, 1032 Webster St., and the installation of air evacuation systems in 100 homes affected by indoor air fumes from the groundwater, which is tainted with the degreaser trichloroethylene — TCE — and other organic chemicals.

It's unknown when the school will reopen. A handful of homes that have dirt basements still have indoor air contamination slightly above strict exposure levels. In the Superfund program, those responsible for the contamination fund the cleanup.

According to documents obtained by the Dayton Daily News, federal investigators believe four industrial businesses could share responsibility: Gem City Chemicals Inc., Aramark Uniform Services, Chrysler, and Behr Dayton Thermal Products.

Aramark didn't return a call for comment. Gem City declined comment.
In a follow-up article, the Daily News also reports that a survey of local cancer incidence is planned:
Public Health Dayton & Montgomery County is launching a cancer incidence survey among residents near the Behr Dayton Thermal Products plant, where groundwater pollution has prompted regulatory action to address indoor air quality.

Mark Case, director of environmental health for the agency, said Monday, March 10, that the survey could take up to a year and is being conducted with the Ohio Department of Health.

The survey will examine medical records and compare cancer levels in the neighborhood with overall cancer levels in the county, state and nation, he said. "By comparison, you get a sense whether something is out of line or not," Case said.

The Ohio Cancer Incidence Surveillance System will be tapped for data, he noted. All diagnosed cancer cases in Ohio are supposed to be reported to the system. The area will include the census tract of the Behr plant and residential neighborhoods where 100 or so indoor air vapor abatement systems have been installed.

A similar survey was performed in 2005 in Kettering neighborhoods near the former Gentile Air Force Station. Residents of the Wiles Creek neighborhood there complained about pollution from the former Defense Electronics Supply Center. The survey found no abnormalities.

Case acknowledged that a cancer survey could have some limitations.

"We don't know how long the vapors have been in people's homes," he said.

The exact chronology of Behr plant pollution is unclear. Former plant owner Chrysler has said it discovered TCE, or trichloroethylene, contamination in 1996, but it wasn't until Ohio EPA tests in 2006 that hazards to homes were suspected.

Cancer can develop over decades and take the form of many different types of tumors, Case said. In its Ninth Report on Carcinogens, the federal National Toxicology Program determined that TCE is "reasonably anticipated to be a human carcinogen." The International Agency for Research on Cancer has determined that TCE is "probably carcinogenic to humans," according to the Agency for Toxic Substances & Disease Registry.

In a related development, a community outreach survey sponsored by the Environmental Sustainability Research Group at the University of Dayton will examine health problems in the area. A public meeting on the survey could occur in April, a spokeswoman said.

Related Posts (on one page):

  1. Behr site proposed as Superfund site, Cancer incidence inquiry planned (OH)
  2. Vapor intrusion in Dayton from Behr Dayton Thermal Products plant (OH)

3 toxic site clean-ups in Rochester/Brighton (NY)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
Though the meetings announced in this article have since passed (the article was originally dated March 10), this Rochester Democrat & Chronicle article highlights 3 separate site clean-ups that are under way:
Costly taxpayer-financed plans to address toxic-chemical contamination in residential pockets of northeast Rochester and central Brighton will be detailed at separate public meetings this week.

The state Department of Environmental Conservation has scheduled a meeting for Tuesday evening to discuss a $1 million proposal to remove tainted soil and take other steps to address contamination at a now-closed business at Fernwood and Portland avenues in northeast Rochester.

The DEC first learned in 2000 that Preferred Electric Motors had spilled solvents and other potentially harmful materials in the course of its work refurbishing electric motors. Trichloroethene (TCE), tetrachloroethene (PCE) and other solvents are contaminating groundwater near the former business, prompting the state to install ventilation systems in two homes to guard against the build-up of toxic vapors.


Clean-up of Fernwood Ave site planned in Rochester (NY)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
The Rochester Democrat & Chronicle (NY) recently reported this news:
Barring a flood of public comments, state environmental officials could decide early next month on a cleanup option for a site in northeast Rochester where soil and groundwater are contaminated with toxic solvents.

And judging by attendance at a public meeting on the site Tuesday evening, a flood of further comments is unlikely. "It's sad in the neighborhood — there's just no interest," said Sue Buehner, one of two or three citizens who attended the meeting in the library at School 36.

The session focused on problems at 42 Fernwood Ave., a small commercial building where Preferred Electric Motors reconditioned motors from the early 1950s until the business closed eight years ago. In the process, the company spilled or dumped toxic solvents, including trichloroethene, or TCE.

After an anonymous tip about leaking chemical drums in 2000, state Department of Environmental Conservation officials found solvents in soil and groundwater.

They also discovered very high levels of TCE vapors infiltrating a neighboring rental home, and health officials ordered that it remain unoccupied until a system was installed to pull the potentially harmful vapors from the soil.


Third toxic site uncovered in Brighton (NY)
by Neil Fischbein on Friday, March 21, 2008 [Permalink] [0 Comments]
Still catching up on old news, the Rochester Democrat & Chronicle (NY) reported this news in late February:
Even as state environmental officials are publicizing cleanup plans for two Rochester-area toxic dump sites, another local contamination site has been placed on the to-do list.

The new site, off Brighton-Henrietta Town Line Road, is a commercial property where the once-ubiquitous industrial solvent trichloroethene, or TCE, was used — and apparently spilled. Groundwater near the building at 235 Metro Park in Brighton contains relatively high concentrations of TCE, as well as other solvents.

A fact sheet from the state Department of Environmental Conservation said the solvents apparently originated with Fischbach & Moore Electric, a large commercial contractor that occupied the building for years.

The DEC notified nearby property owners last week that it has added the site to its registry of hazardous waste disposal sites. It is listed a Class 2 site, meaning it poses a significant threat to the environment or public health, and must be cleaned up.
Note: We can't locate the DEC fact sheet. When we do, we'll provide link here. Meantime, you can read the full Democrat & Chronicle article here.

Wednesday, March 19, 2008

St. Louis Park Vapor Intrusion study update meeting tonight, March 19 (MN)
by Neil Fischbein on Wednesday, March 19, 2008 [Permalink] [0 Comments]
According to this recent EPA Press Release:
St. Louis Park, Minn., Vapor Intrusion Study Update Meeting March 19

U.S. Environmental Protection Agency Region 5 will host a public meeting to update residents on findings of the vapor intrusion study being conducted in the vicinity of Highway 7 and Wooddale Avenue. The meeting will be 7 p.m., Wednesday, March 19 at the St. Louis Park Rec Center, 3700 Monterey Drive, St. Louis Park, Minn.

Vapors from volatile organic compounds, or VOCs, have been found in some area ground water and could get into homes and commercial buildings. EPA has screened about 250 St. Louis Park properties since December. A Web site is at http://www.epa.gov/region5/sites/stlouispark/index.htm

Officials from partner agencies are expected at the meeting. Partner agencies include Minnesota Pollution Control Agency, Minnesota Department of Public Health, Hennepin County and the city of St. Louis Park.

For more information or special accommodations at the meeting, contact EPA community involvement coordinator Don de Blasio, 800-621-8431, Ext. 64360 (weekdays 9 a.m. - 4:30 p.m.) or deblasio.don@epa.gov.

SOURCE U.S. Environmental Protection Agency Region 5

Related Posts (on one page):

  1. St. Louis Park Vapor Intrusion study update meeting tonight, March 19 (MN)
  2. St. Louis Park TCE and PCE vapor testing expands (MN)
  3. St. Louis Park suspects TCE and PCE in indoor air (MN)

TCE contaminates hundreds of private water wells in Adelaide suburbs (Australia)
by Neil Fischbein on Wednesday, March 19, 2008 [Permalink] [1 Comments]
According to ABC News (that's the Australian Broadcasting Company, by the way):
The Health Department says another 900 residents could be affected by contaminated bore water in Adelaide's western suburbs.

They live in Findon, further west of the Beverley and Woodville South residents who were warned back in December not to use ground water because it an industrial cleaning agent had been detected.

Hydro geologists have advised that the area affected by trichloroethylene is wider than earlier thought.

Acting chief medical officer Paddy Phillips says letters are being sent to residents of the newly-identified problem area.

"The zone will now extend westward to include Findon Road to the east, Balcombe Avenue to the south, Pioneer Street and Todville Street to the west and Ryan Avenue to the north," he said.

"We're now letting people know that the area has expanded slightly and again reminding people to take appropriate precautions and that is to not use bore water in that area for drinking or swimming or irrigation."
Best we can tell, bore water=private well water.

Surprisingly, there has been no mention of the danger of toxic vapors or vapor intrusion even though contamination has clearly been discovered under and near buildings and homes. These communities should be warned of the risk of vapor intrusion, and tests should be conducted to rule it out.

Tuesday, March 18, 2008

EPA's mobile lab heading to Dover to test for toxins (DE)
by Neil Fischbein on Tuesday, March 18, 2008 [Permalink] [0 Comments]

EPA owns a bad-ass mobile toxin detector. Officially, it's known as the Trace Atmospheric Gas Analyzer (TAGA). According to EPA:
The Trace Atmospheric Gas Analyzer (TAGA) is a self-contained mobile laboratory capable of real-time sampling and analysis in the low parts per billion level of outdoor air or emissions from various environmental sources and concerns. In addition, the TAGA has specialized sampling equipment for measuring indoor air and at remote locations.
As we understand it, EPA has a limited supply of these mobile labs. Apparently, one of them is headed to Dover, DE this spring:
Federal pollution investigators will dispatch a mobile laboratory to Dover this spring as part of an expanded probe of toxic vapor risks from chemical contamination in groundwater flowing under the state’s capital.

The Environmental Protection Agency work will target pollutants spilled into the soil from a former coal gas plant and dry cleaning operation west of the city center.

Studies of the Dover Gas Light Company Superfund site have been under way since the mid-1980s. More than a decade later, officials acknowledged concern that vapors from some of the contaminants might trickle into buildings after escaping from shallow, tainted groundwater.

[...]

Part of the work scheduled for this spring includes use of a mobile Trace Atmospheric Gas Analyzer (TAGA) bus to sample vapors under the bottom slabs of buildings along the contamination plume.

The TAGA samples can be drawn from a small hole drilled into the floor of buildings, in a process that takes about 30 minutes. Some indoor air sampling work also is planned, using small, portable devices that collect samples over a 24-hour period.

[...]

Although public water supplies are considered safe from the pollution, past tests have found shallow groundwater contamination levels in worst-hit areas thousands of times higher than federal drinking water standards.

Chemicals most often mentioned include tetrachloroethylene (PCE) and trichloroethylene (TCE), solvents used in dry cleaning that are known to cause cancer or other health problems after long-term exposure at high levels.
Read the full story here.

Friday, February 22, 2008

Vapor intrusion in Dayton from Behr Dayton Thermal Products plant (OH)
by Neil Fischbein on Friday, February 22, 2008 [Permalink] [0 Comments]
Toxic TCE vapors are entering homes in Dayton. Though EPA is on the case, they've run into a few complications:
Efforts to make homes safe from contaminated groundwater fumes near the Behr Dayton Thermal Products plant, 1600 Webster St., have run into problems at as many as 10 homes.

And the effort to clean indoor air contamination at a nearby school is ongoing, authorities have said.

TCE fumes have migrated from the soil into the homes, businesses and schools, creating potentially hazardous vapors.

In homes that have dirt basement floors, those floors must be sealed for the air evacuation systems to work properly, said Mark Case, director of environmental health for Public Health Dayton & Montgomery County.
Levels of contamination in the problematic homes have reportedly dropped below 10 ppb. That's still 25 times the Ohio Department of Health's exposure limit of .4 ppb.

Read the full article in the Dayton Daily News.

Related Posts (on one page):

  1. Behr site proposed as Superfund site, Cancer incidence inquiry planned (OH)
  2. Vapor intrusion in Dayton from Behr Dayton Thermal Products plant (OH)

Cancer prevention and the Presidential Candidates
by Neil Fischbein on Friday, February 22, 2008 [Permalink] [0 Comments]
Cancer Monthly posted a great feature entitled Cancer and the Presidential Candidates. We extracted the legislative efforts that we think most relevant for TCE-impacted individuals and communities:
Barak Obama has sponsored a bill to enable states to develop or expand activities to monitor exposure to environmental toxins and pollutants (S.1068);

Hilary Clinton has sponsored a bill that would amend the Safe Drinking Water Act to protect the health of susceptible populations from trichloroethylene (S.1911);

Both of them, along with John McCain, cosponsored a bill that would provide grants to better understand the environmental factors related to breast cancer (S.579).
Of course, this is just a glimpse of the candidates' cancer-fighting credentials and only part of the feature. The rest of it is worth checking out, especially the part that leads Cancer Monthly to conclude:
And finally, beneath its public relations veneer as our protector, the FDA is an agency that reportedly lets drug company representatives make decisions for the country, approves dangerous drugs, and does not perform necessary follow-up on approved drugs.
Update: You know, we checked out the proposals that we blindly copied cited above. Of course we were already familiar with the TCE Reduction Act (S.1911), so we checked out the Obama and McCain-sponsored proposals. The McCain cosponsored proposal, (S.579), reads pretty much as Cancer Monthly advertises.

We're not certain, however, that Cancer Monthly captured the full impact of Obama's proposal. It seems to us that its scope is much broader than just expanding states monitoring capabilities. Seems to us like Obama is seeking accountability. Judge for yourself - here's the full text:
'A bill to promote healthy communities. '
Bill # S.1068

Original Sponsor:
Barack Obama (D-IL)

Healthy Communities Act of 2007 - Requires the Secretary of Health and Human Services to establish the Advisory Committee on Environmental Health to review environmental health data and studies to: (1) assess the impact of federal laws, policies, and practices on environmental health and justice; and (2) identify and recommend ways to change or ensure compliance with federal laws, address gaps in federal environmental health research, and prevent or mitigate harm from federal policies, programs, and practices that may adversely affect environmental health or justice. Requires the Director of the Centers for Disease Control and Prevention (CDC) and the Administrator of the Environmental Protection Agency (EPA) to prepare a biennial Environmental Health Report Card for the nation and for each state. Requires the Secretary to: (1) establish the Health Action Zone Program to award grants to at-risk communities for comprehensive environmental health improvement activities; and (2) expand and intensify environmental health research. Requires the Secretary, acting through the Director, to provide grants and technical assistance to enable states to develop or expand activities related to biomonitoring of exposure to environmental toxicants and pollutants. Requires the Secretary to: (1) promote translation and dissemination of findings; and (2) incorporate the data collected under this Act with existing data collection efforts. Requires the Director to expand training and educational activities relating to environmental health and justice for health professionals and public health practitioners.

Thursday, February 21, 2008

St. Louis Park TCE and PCE vapor testing expands (MN)
by Neil Fischbein on Thursday, February 21, 2008 [Permalink] [0 Comments]
After finding cause for concern in previous tests, the St. Louis Park (MN) vapor intrusion investigation expands:
Expanding the search for potentially hazardous vapors in homes and businesses in St. Louis Park, the Environmental Protection Agency said Wednesday that it will add about 50 properties to its study area on both sides of Hwy. 7 near Wooddale Avenue.

[...]

The main chemicals of concern, trichloroethylene and perchloroethylene, have been used for decades as industrial degreasers, metal cleaners and dry-cleaning fluids and seeped into the groundwater under St. Louis Park. Long-term exposure to them at certain levels has been linked to cancer, liver disease and other problems, according to state health officials.

[...]

EPA officials will go door-to-door this Saturday to explain the situation to those living in the expanded study area, and to seek their permission to take air samples. The testing involves drilling a small hole in the basement and inserting a 2-foot probe about the width of a pencil.

The initial study area contained about 270 homes and businesses, and the EPA received permission from owners to test vapors beneath 214 of the buildings. Of that number, 32 homes and eight commercial buildings were found to have enough contamination to justify more testing to check air in different rooms and for longer periods of time.
Read more here.

Wednesday, February 20, 2008

TreeHugger: What is Vapor Intrusion?
by Neil Fischbein on Wednesday, February 20, 2008 [Permalink] [0 Comments]
A website called TreeHugger has an informative overview of Vapor Intrusion in the form of a brief Q and A called "Ask TreeHugger". The question was posed on the site as follows:
Could you discuss the issues and health risks related to "vapor intrusion" of volatile organic chemicals into buildings from contaminated sites? What can a homeowner or purchaser do to find out if there is a vapor intrusion risk at home, schools, or day care centers?
The answer is provided by Helen Suh MacIntosh, an Associate Professor of Environmental Chemistry and Exposure at Harvard University's Department of Environmental Health and staff member of EPA's Science Advisory Board. She writes:
“Vapor intrusion” (sometimes called “soil gas vapor intrusion”) is what happens when chemicals move from the ground or water into your home or other buildings. Chemicals that enter your home through the ground often belong to a class of chemicals called “volatile organic compounds” (VOCs), which as their name implies are volatile, and thus like to exist as a gas. This property is important, allowing VOCs to move easily through openings that exist between the soil grains and thus to move from areas of high pressure to areas of low pressure. Since basements tend to be at lower pressure than the ground below, this pressure-related movement can cause VOCs to enter your home from the ground through openings or cracks in your foundation. Once inside, the VOCs can spread through out your home with the help of natural air flow, room or house fans, or other home ventilation devices. When this occurs, vapor intrusion can be an important source of indoor pollution in your home.

Whether vapor intrusion also presents additional health risks depends on many factors. For example, health risks will depend on the people that live or spend time in your home, as people have different responses to chemical exposures. Health risks will also depend on the type and amount of your chemical exposures, more precisely the specific VOCs that enter your home, their levels inside your home, and the length of time that the VOCs remain elevated.

Although other kinds of chemical spills, leaks or contamination can also lead to vapor intrusion in homes, the most common VOCs associated with vapor intrusion are gasoline-related, the result of spills or leaks from an underground storage tank at a gas station. For gasoline-related intrusions, VOCs of concern may include (but are certainly not limited to) benzene, toluene, xylenes, and styrenes. Exposures to these and other gasoline-relaed VOCs have been linked to a variety of adverse effects, including short term (and generally reversible) effects such as eye and respiratory irritation, headaches, and nausea, and long-term effects, such as cancer.

There are several ways to test if VOCs or other chemicals are entering your home through the ground. You can collect samples in the nearby ground (soil vapor samples), in the ground directly below your foundation (sub-slab vapor samples), in your indoor air, and in your outdoor air (for comparison). Samples in these different places should be collected at the same time, preferably during the heating season when the pressure difference between the ground and the basement should be highest. Similarly, indoor samples should be collected in the basement or first floor of the living space, since these are the areas in your home where the levels from vapor intrusions should be highest. Since there are many sources of VOCs inside your home and since indoor VOC concentrations can vary widely day-to-day, indoor sampling results may be more difficult to interpret than the soil and sub-slab sampling results, but interpretation of indoor sampling results will be easier with outdoor sampling data and information about your house, including its ventilation, characteristics, and other VOC sources.

Also, if you know that a nearby gas station, commercial or industrial facility or other site has had a spill or a leak of VOCs, you may want to call the owners, local government officials, or the people cleaning up the spill to see if any sampling is being performed to test for vapor intrusion and if so, to ask for testing to be performed at your home. The U.S. Environmental Protection Agency provides extensive technical guidance on vapor intrusion including “safe” levels of chemicals in groundwater and soil gas (See Draft Guidance at http://www.epa.gov/correctiveaction/eis/vapor.htm).

If tests show that chemicals are getting into your home through the ground, there are many possible solutions, including sealing cracks and openings in the foundation or installing a radon remediation system. Often, the costs of these solutions will be paid for by the person or company who allowed the chemicals to get into the ground.

Helen Suh MacIntosh is a professor in environmental health at Harvard University and studies how pollution behaves in the environment and how it affects people's health. Please keep in mind that her answers are just her interpretation of available information and should not be taken as the only viewpoint or solution to a problem. Use this column at your own risk. Having said this, please feel free to post any of your environmental health questions to helen@TreeHugger.com. (Please use a descriptive email subject line and mention if you want to remain anonymous or not).
We thought this was a nice summary. We also liked the pretty picture. This may be a helpful link to share with anyone who wants or needs to learn about the very basics of vapor intrusion.

Local expert: East Pikeland's Kimberland Elementary School site "potentially dangerous" (PA)
by Neil Fischbein on Wednesday, February 20, 2008 [Permalink] [0 Comments]
After several years of exploration, the East Pikeland Planning Commission has just recommended a plan to build an elementary school on land contaminated with VOC's (including TCE). Last week, the Daily Local News (West Chester, PA) reported the unanimous recommendation was made to the Board of Supervisors. Now, presumably, the Board will consider the issue.

Back in 2006, the Planning Commission summarized the history of the site and outlined their major environmental concerns regarding school-building there:
[Attorney Christopher] Roe explained that across Coldstream Road from the proposed school site the Henry Company site has long been the subject of environmental investigation and clean-up under the direction of the United States Environmental Protection Agency (USEPA). Ciba-Geigy, a chemical company, operated there in the 1950s and early 1960s. USEPA has identified lagoons that were used for disposal in that area and are the likely source of solvent contamination in the groundwater. The lagoons were excavated in 1984, but the monitoring and clean-up of groundwater continues.

In the 1980s groundwater monitoring wells were installed on nearby properties to determine how far contaminants had spread. These off site wells included four that were installed on what is now the Kimberton Elementary School property. Two of the wells on the north northeast side of the Kimberton School property have never shown the presence of any solvent contamination. A third well, on the east side of the property along Rt.113, has shown low levels, at or below clean-up standards. The fourth well, monitoring well MW-17 –along the southwest edge of the property – has consistently shown elevated levels of solvent contamination.

Phoenixville Area School District (PASD) will not use groundwater from the property for any purpose. Despite this, PASD and its advisors met with and are working with USEPA and the Pennsylvania Department of Environmental Protection (PADEP) to insure that the presence of the contaminants in the groundwater below part of the property will not pose unacceptable risks to employees or students.

PASD is actively engaged in two steps toward this goal. First, PASD has directed that the designers of the school building follow and implement USEPA guidelines for ensuring that school buildings are protected from subsurface vapors.

Second, PASD has hired environmental specialists to install additional groundwater monitoring wells to better define the areas of the property under which contaminated groundwater may exist, including the concentrations and water elevations.

Given the history of the use of the property, another issue that PASD is having its environmental advisers fully evaluate and address is the appropriate handling of the construction debris and other fill materials, including a small area reportedly used as a town disposal area in the 1960s or earlier. PASD’s consultant will submit a plan for the handling of the fill materials that will be reviewed and approved by PADEP before actual construction work begins.
A quick poke around EPA's website reveals a bit more detail regarding the history of the Henry Co./Ciba-Geigy contamination site:
In 1981 volatile organic compounds (VOCs) were detected in monitoring wells. As a result, a series of initial clean-up actions took place including removal of drums, excavation of the lagoons, and treatment of residential wells. In 1992 a public water system was built providing water to residences and businesses around the site. Approximately 500 people live within a one-mile radius of the site. A small stream that crosses through the site is the discharge point for local groundwater. Less than one-mile from the site is French Creek, a public recreation and fishing area.

[...]

Threats and Contaminants
During routine water quality testing in 1981, contamination in a well on the site was detected. The lagoons were identified as a source of contamination at the site. The groundwater is contaminated with volatile organic compounds (VOCs), including trichloroethene [aka trichloroethylene], dichloroethene, and vinyl chloride. A tributary to French Creek was also contaminated with VOCs.

[...]

Cleanup Progress
In the past ten years, over 3,000 pounds of VOCs, mainly TCE, have been removed by the groundwater treatment system. The groundwater and surface water are regularly monitored and this information is reported to EPA. EPA completed a five-year review of the site on September 30, 2004 and found that the remedy is protective of human health and the environment. The next five-year review will be due by September 2009.
Though online sources do not appear to reveal the levels of contamination at the adjacent contaminated property or under the proposed school, plans to build a geothermal system into the proposed school reportedly have been scrapped because of the vapor intrusion risk associated with drilling into the soil.

We can't help but wonder: If the soil is so contaminated that drilling into it may exacerbate vapor intrusion, do you really want to put a school there?

Apparently we're not the only ones concerned. In an opinion letter published this past Sunday in the Daily Local News, West Chester resident Bruce Molholt Ph.D., an independent environmental consultant and a part-time professor at the University of Pennsylvania's Institute for Environmental Studies whose research interests include "environmental factors which exacerbate cancer incidence among children," writes:
As a toxicologist who has investigated many schools built upon ground containing chlorinated solvents, this situation looks potentially dangerous to future schoolchildren whether or not a geothermal system is put in place.

The problem is that chlorinated solvents underground are degraded by soil bacteria to vinyl chloride, a carcinogenic gas. This carcinogenic gas migrates upwards, much like radon, and may accumulate in buildings on top of contaminated soil.

In one such school built in 1965 atop a trichloroethylene (TCE) dump in Marion, Ohio, I found that the leukemia rate in schoolchildren was three times that expected. Upon my recommendation, the local school board finally moved the school to another location. Obviously this unwise location caused both inestimable human trauma and great expense to the school district.

Bruce Molholt
West Chester
If any readers know the actual levels of contamination found at or near the site, please contact us via the link above or send an email to tceblog [at] gmail.com. Meantime, we'll try to keep you posted as we learn more.

Sunday, February 17, 2008

More on the New York State Vapor Intrusion Alliance (NYVIA)
by Neil Fischbein on Sunday, February 17, 2008 [Permalink] [0 Comments]
We posted this news weeks ago and wanted to tell you more:

According to the press release announcing its formation, the New York State Vapor Intrusion Alliance (NYVIA) was recently formed by citizens representing Ithaca, Victor, Endicott, Hopewell Junction, Plainview, Hillcrest, Middleport and Ft. Edward. Each of these communities has been forced to deal with ongoing TCE pollution and the impact of vapor intrusion. Founding members of the Alliance include (links have been provided below where available):
  • Debra Hall, Co-Chair
    Hopewell Junction Citizens for
    Clean Air and Clean Water
  • Bruce Oldfield, Co-Chair
    Hillcrest Environmental Action Team
  • Mike Barry
    Victor New York TCE
  • Carol Meschkow
    Concerned Citizens of the Plainview-Old
    Bethpage Community, Inc.
  • Laura Haight
    NY Public Interest Research Group
  • Ken Deschere
    Regina Deschere
    Ithaca South Hill Industrial Pollution
  • Bill Borell
    Hopewell Junction Citizens for
    Clean Air and Clean Water
  • Sue Hughes
    Julie Rizzo
    United Neighbors Improving Tomorrow's
    Environment
  • Stephen Boese
    Healthy Schools Network
  • Don Teeling
    CARE - Ft. Edward
  • They are supported by two technical advisors:
  • Lenny Siegel
    Center for Public Environmental
    Oversight
  • Dave Palmer, Esq.
    NY Lawyers for the Public Interest
  • Their press release states their mission:
    1. Assist impacted residents, communities and schools across New York State in addressing toxic chemical exposure from vapor intrusion.

    2. Explore the impact of vapor intrusion on health and property, identify commonalities, and present our findings as a means to educate the public, media, and policy-makers.

    3. Collaborate with local and state officials to adopt protective remediation standards, policies, procedures and technologies to prevent or mitigate vapor intrusion that are based on 21st century knowledge and science.
    In support of this mission, the Alliance has already inserted itself into state politics and is lobbying for legislation designed to better protect the public from migrating toxins and vapor intrusion.

    In addition to announcing support for proposed state legislation regarding Landlord Notification to Tenants of Contaminants (requiring that landlords disclose to current or prospective tenants any known contamination on a property, including the results of any investigations concerning vapor intrusion) and announcing support for the state's proposed Private Well Testing Act (requiring that drinking water from private wells be tested - upon transfer of a property - for contaminants including VOC's), the Alliance is meeting with legislators and urging New York State to revise its indoor air action levels for TCE:
    A document from the NYS Department of Health in 2003 listed the range of potential criteria for long term exposure of trichloroethylene (TCE) in indoor air from 0.2 to 4 micrograms per cubic meter (mcg/m3)of air and then sets 5 mcg/m3 as the indoor air guideline. In 2005, the NYS DOH adopted a matrix for evaluating residential indoor air that lists values for mitigation of TCE vapors ranging from 0.25 to 5.0 mcg/m3 depending on subslab concentrations. As a response to public outcry about the matrix, the NYS DOH convened an expert panel in August of 2005 to comment on the use of this matrix. NYS DOH rejected the panel’s recommendation that the standard be set between 0.1 and 1 mcg/m3 of indoor air. In 2006, NYS Senator Thomas Libous wrote to the NYS DOH requesting that the NYS standard be set between 0.016 and 0.02 mcg/m3 of air. The NYS DOH has been unresponsive to requests to lower NYS indoor air standards.

    [...]

    The community action groups in this Alliance have found that the NYS Indoor Air guidelines in the matrix are not applied uniformly in pollution cases. The screening levels appear to be different in different communities and the action levels vary significantly. In Hillcrest (Town of Fenton) NY, mitigation of TCE vapors was done down to 0.14 mcg/m3 whereas in Endicott NY a standard of 5 mcg/m3 was applied.

    The NewYork-Vapor Intrusion Alliance strongly supports the introduction of legislation to adopt trichloroethylene indoor air standards to be set at the detection level using the most accurate measurement devices available. NY-VIA also strongly supports that the standards be applied uniformly across New York State.
    The New York State Vapor Intrusion Alliance is working towards important goals. Their voice and influence have become necessary to fill a critical gap left by legislators and regulators who, unduly influenced by corporate and political pressures, have been unable or unwilling to adequately protect the public from migrating toxins and vapor intrusion.

    The TCE Blog fully supports NYVIA's mission and its efforts. Further, we believe other states can and should learn from their example. Every state should establish a similar Vapor Intrusion Alliance.

    If anybody from Connecticut wants to help us launch the CTVIA, please contact us.

    Related Posts (on one page):

    1. More on the New York State Vapor Intrusion Alliance (NYVIA)
    2. New York State Vapor Intrusion Alliance formed (NY)

    Wednesday, February 13, 2008

    Superior Tube to eliminate TCE use (PA)
    by Neil Fischbein on Wednesday, February 13, 2008 [Permalink] [0 Comments]
    According to today's Philadelphia Inquirer (PA):
    Superior Tube Co., a Collegeville manufacturer that has released some of the nation's highest airborne amounts of trichloroethylene, a suspected carcinogen, announced today that it is phasing out use of the chemical.

    Company president Tony Jost said the TCE would be replaced with a less hazardous chemical.

    The company has asked the Pennsylvania Department of Environmental Protection for permission to modify its procedures. If approved, Jost said, the work could be completed by the end of April.

    Charles McPhedran of Citizens for Pennsylvania's Future, a key critic of the company's practices, said Superior was making "a big step forward."

    Company officials said the new process would be state of the art and would meet or exceed all the changes that have been vigorously sought by area residents, legislators and the environmental community.
    Read the full story here.

    Congratulations to Liz D., Jon Goodman, the folks at PennFuture, and the others in the Collegeville/Trappe area who are fighting to protect people from TCE and played an important role in influencing Superior Tube's decision. Thanks also to Liz for the tip.

    Friday, February 8, 2008

    Controversy over North Brunswick Township High School risk report (NJ)
    by Neil Fischbein on Friday, February 8, 2008 [Permalink] [0 Comments]
    The ATSDR has delivered yet another report concluding that a contamination site poses "no apparent public health risk." Just toss it in the pile. Feel free to roll your eyes. (For those who don't know, ATSDR is notorious for producing these reports)
    There is "no apparent public health risk" at the North Brunswick Township High School and its surrounding areas associated with the soil contamination found in 2003, according to a preliminary public health assessment.

    Last Thursday, township officials and representatives from the New Jersey State Department of Health and Senior Services and the U.S. Agency for Toxic Substances and Disease Registry held a meeting to discuss the remediation project that resulted from the expansion of the high school in 2003. The primary concern for the school, Veterans Park, Judd Elementary School, a PSE&G easement and six nearby residences was arsenic in surface soil, lead in settled dust and tetrachloroethylene (TCE) [sic] in groundwater.

    In July 2003, waste material consisting of pharmaceutical and laboratory wastes, glass vials, bottles and an unidentified dark brown material were uncovered near and within the Oval area of the high school, which is where the current auditorium sits. It is believed that the site was used as a municipal dump between the 1940s and 1960s. Approximately 9,200 cubic yards of waste materials and soil were excavated and removed, according to the report.

    Since that time, officials said 54 soil samples and 18 interior surface samples were taken from the high school, and 10 interior surface samples were collected from Judd, with follow-up tests conducted. The high school perimeter and football field, as well as the neighboring park and residences at block 143, lots 94.01 and 95.01 were also examined.

    Although remediation is still needed at Veterans Park and efforts will continue to oversee and limit any possible groundwater and vapor contamination, the report states that there are no cancer or noncancer health risks associated with the project.
    We note that the story seems to confuse TCE and PCE. It is not clear which of these is the contaminant of concern referenced above. No matter which it is, residents were reportedly suspicious of the report's findings:
    One parent claimed his son "lived in the dirt" for 18 years as an athlete and developed a brain tumor, although he is not positive there is a correlation. A student noted that the epidemiology report is only calculated through 2001, but statistics may have changed through 2008. Another person mentioned that the cancer rates should be evaluated specific to the area surrounding the high school and not broadened out to the general population, since any health effects will involve North Brunswick.

    Also, residents are concerned that there could have been inhalation of chemicals since the investigation and remediation phase began, and that sites that have not been remediated, such as the high school perimeter, the overused football field and Judd school, could have contaminants in the soil that become disturbed and loosened as time goes on. One parent is concerned that no additional testing was done at Judd before the current expansion and renovation project began.
    Read the full story in the North Brunswick Sentinel (NJ).

    Update: Strangely, the report above fails to mention that ATSDR conducted a separate public health assessment re: exposure to Arsenic and TCE at 3 nearby residences in 2005 (yeah, we confirmed the contaminant is TCE and not PCE). They reported TCE contamination in groundwater at levels up to 140 ppb, TCE in indoor air in homes at levels of 12μg/m3, and arsenic dust that coated indoor air surfaces. They concluded that past exposure posed a public health hazard and, at the time, ongoing exposure posed an indeterminate public health hazard.

    We suspect we're going to be hearing more on this story. As always, we'll try to keep you psted.

    Thursday, February 7, 2008

    TCE in Queens around the Swingline Stapler factory (NY)
    by Neil Fischbein on Thursday, February 7, 2008 [Permalink] [0 Comments]
    A story posted on the TimesLedger website describes NY State Assemblywoman Catherine Nolan's appeal to the state to better inform local communities about potentially toxic neighborhood sites. Her concern appears to stem from recent discovery of contamination found to be migrating from under the Swingline Stapler building in Queens.

    It reminds us that we have yet to post the original news of the migration, which broke in December:
    State Department of Environmental Conservation officials are conducting tests at eight to 12 buildings within a one-block radius of the former stapler factory, which closed in 1999 and housed the Museum of Modern Art while its Manhattan location was being renovated from 2002 to 2004.

    The groundwater and soil beneath the building is tainted with the common industrial pollutant and carcinogen trichloroethylene, known as TCE, according to DEC regional citizen-participation specialist Arturo Garcia-Costas.

    In October, the DEC found that the degreasing solvent - which has also been linked to nerve damage and birth defects - may have spread, so a new round of tests began immediately.

    [...]

    ACCO, the company that operated the Swingline factory from 1952 to 1997, entered into the state's voluntary cleanup program in October 2000 after an unlined pit used to dump chemical waste was discovered during federal closing procedures.

    In 2004 the DEC investigated the actual footprint of the factory, but not until this year did it complete tests in the areas around Swingline.
    Read the full story from December here. We'll try to keep you posted as we learn more.

    St. Louis Park suspects TCE and PCE in indoor air (MN)
    by Neil Fischbein on Thursday, February 7, 2008 [Permalink] [0 Comments]
    According to the Star Tribune (MN):
    [EPA w]orkers are testing the air inside 40 homes and businesses in St. Louis Park after chemical vapors were discovered in the soil under their basements, the U.S. Environmental Protection Agency said Wednesday.

    Those properties were among more than 200 homes and businesses that were checked for potential risk from underground solvent contamination.

    [...]

    Each of the 40 properties will be visited by a mobile lab, [EPA's "on-scene coordinator, Sonia] Vega said. Technicians are going room to room in the homes, using special hoses to pump air into the lab to see whether the vapors are present in high concentrations. They will also leave 24-hour sampling canisters in each building to test the air in the basement and first-floor levels.

    The main chemicals of concern, trichloroethylene and perchloroethylene, have been used for decades as industrial degreasers, metal cleaners and dry-cleaning fluids. Long-term exposure to them at certain levels has been linked to cancer, liver problems and other adverse health effects, according to state health officials.

    [...]

    The properties being tested are on both sides of Hwy. 7 near Wooddale Avenue. By last week, workers had pulled air samples from beneath the basement floors of 184 residences and 29 commercial or industrial buildings.

    Vega said the vapors measured beneath the 32 homes and eight commercial buildings ranged from slightly above health guidelines to more than twice what is considered safe. The buildings with the higher vapor concentrations in their soils were clustered, Vega said, but she could not provide more details until the test results