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High Levels of Carcinogens Found after Manali Gas Leak
PRESS RELEASE
4 January, 2008.CHENNAI -- At least
26 toxic volatile organic chemicals and sulphur gases including carcinogenic
benzene and bromomethane were found in an air sample taken in Manali several
hours after the gas leak of December 4-5, 2007. Of the 26 chemicals, the 11 chemicals that were reliably identified
include Hydrogen
Sulphide, Carbon Disulphide, Bromomethane, Methyl Ethyl Ketone, Benzene,
Toluene, n-Hexane, Ethylbenzene, m,p-Xylenes, o-Xylene, and n-Nonane. Benzene,
hydrogen sulphide, carbon disulphide and bromomethane were above safe limits.
Barring bromomethane, all other chemicals are known to be part of refinery
emissions. Benzene and hydrogen sulphide was 36 times and 33 times higher than
safe levels prescribed by the United States Environmental Protection Agency
respectively. The sample was analysed for 89 chemicals in Columbia Analytical
Services, California.

Benzene is
causes childhood leukemia (blood cancer). Hydrogen sulphide, a gas with a
rotten egg smell, is a powerful neurotoxin that affects the brain, and reduces
the IQ of growing children. Both chemicals target children particularly.
"Given that
the sample was taken after and not during the gas leak, levels of toxic gases
during the gas leak are likely to have been many times higher than what was
found," said Dr. Rakhal Gaitonde, a public health specialist. "Contrary to
claims by the TNPCB that the leaked gases were harmless, the air sample results
indicate that even under normal circumstances, the air in Manali is a threat to
public health."
Subsequent
to the release, the TNPCB admitted that venting of hydrocarbons is routine and
that the incident of early December was caused by adverse weather conditions.
Releasing toxic gases to the environment is not in line with best industry
practices worldwide. Ironically, CPCL has received environmental and safety
awards every year from 2000 onwards, including from the Central Pollution
Control Board, TERI, LoyolaCollege, CII and Greentech Foundation.
Manali, and
the areas of North
Chennai, are home to
most of the city’s poor and working classes. Long-standing complaints of
pollution in the area have not been taken seriously. Regulatory authorities
have exposed a total lack of capacity to curb pollution or deal with hazardous
situations. Evacuation during a major emergency is impossible in North Chennai owing to the congested streets and
the high density of hazardous industries.
The
December incident highlighted the inability of the district administration,
police, TNPCB and the health services departments to understand and deal with
the public health crisis caused by the gas leak.
Under these
circumstances, a recent move by the Secretary, Department of Environment, to
convene an interdepartmental Crisis Cell for Chemical Accidents is a welcome
and much-needed initiative.
The sample
was taken by Chennai-based Community Environmental Monitoring. Analytical costs
were paid by Global Community Monitor in California.
Community Environmental Monitoring. Contact: Nityanand Jayaraman 9444082401
42A, 1st Floor, 5th Avenue, Besant Nagar, Chennai 600 090
KEY AIR TOXIC SUBSTANCES EMITTED FROM OIL REFINERIES:
Ammonia -
AT, CT
Benzene - C, BD, R, CT - ***
Biphenyl - BD, CT - ***
1,3-Butadiene - C, BD, R, CT - ***
Carbon disulfide (CS2) - AT, CT - ***
Carbonyl sulfide (COS) - AT, CT - ***
Cumene - CT, N - ***
Cyclohexane - AT, CT
Diethanolamine (DEA) - C - ***
Dioxin (TCDD) - C, BD, R, CT - ***
Ethylene - CT
Ethylbenzene - BD, R, CT - ***
Hydrogen sulfide (H2S) - N, AT, CT
Mercury (Hg) - N - ***
Methyl Ethyl Ketone (MEK) - AT, CT - ***
Methyl Tertiary Butyl Ether (MTBE) - C, AT, CT - ***
Naphthalene - AT, CT - ***
Phenol - BD, AT - ***
Propylene - AT, CT
Styrene - C, M, CT - ***
Sulfur trioxide (SO3) - AT, CT
Sulfuric acid (H2SO4) - AT, CT - ***
1,2,4-trimethylbenzene - AT, CT - ***
Toluene - BD, R - ***
Xylenes - BD, R, CT - ***
AC = ACUTE TOXIN
BD = DEVELOPMENTAL TOXIN (causes birth defects)
C = CARCINOGEN
CT = CHRONIC TOXIN
M = HERITABLE MUTAGEN (causes genetic changes to DNA or genes)
N = NEUROTOXIN
R = REPRODUCTIVE TOXIN
***HAP = HAZARDOUS AIR POLLUTANT (list of 188 HAPs is from Title III of the
1990 Federal Clean Air Act Amendments signed into law November 15, 1990)
Analyses of results from the sample taken downwind of CPCL in Manali, North Madras
Date of Sampling: 5 December 2007
Time of Sampling: 4:20 pm
Location: Across the road from CPCL compound wall at MGR Nagar, West of CPCL
Wind direction: Northeast to Southwest.
Description of sampling conditions and location: Gusty wind. Faint to strong smell of bitumen/tar. Local
residents reported that the smell, at the time of sampling, was at normal
background levels, and that it had been more than four hours since the smell
was intense.
Results:
- 11 chemicals detected: Hydrogen Sulphide, Carbon Disulphide, Bromomethane, Methyl Ethyl Ketone,
Benzene, Toluene, n-Hexane, Ethylbenzene, m,p-Xylenes, o-Xylene, n-Nonane
- 4 out of 11 chemicals above known environmental standards:
- Benzene, a known carcinogen, 36 times above limits
- Hydrogen Sulphide, a potent neurotoxin, 33 times above limits
- Carbon Disulphide, also a neurotoxin, 7.6 times above limits
- Bromomethane, a carcinogen, 1.4 times above limits
- Out of the 11 chemicals found, 10 target the eyes and the Central Nervous System, 9 target the
respiratory system and skin, 5 target the kidneys, 4 target the liver, 3 target
the blood, 2 target the Peripheral Nervous System, Cardio Vascular System and
the gastrointestinal tract and 1 chemical targets the reproductive system and
bone marrow.
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Chemical found
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Health based Screening levels
(ug/m3)
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Number of times exceed the
screening levels (approx)
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Health Effects
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1.
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Hydrogen Sulphide
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33
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1.00 (US EPA Region 6 Screening
Level)
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33
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A strong odour of rotten eggs
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Irritation of eyes, respiratory
system; convulsions; conjunctivitis, eye pain, dizziness, headache, weakness,
exhaustion, irritability, gastrointestinal disturbance
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Eyes, respiratory system, central
nervous system
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No
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2.
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Carbon Disulphide
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23
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3 (Texas Long-Term Screening Levels)
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7.67
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A sweet ether-like odour
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Dizziness, headache, poor sleep,
weakness, exhaustion, anxiety, weight loss; gastritis; kidney, liver injury;
eye, skin burns; dermatitis; reproductive effects
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central nervous system, peripheral
nervous system, cardiovascular system, eyes, kidneys, liver, skin,
reproductive system
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No
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3.
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Bromomethane
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7.50
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5.20 (US EPA Region 6 Screening
Level)
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1.44
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A chloroform-like odour at high
concentrations
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Irritation eyes, skin, respiratory system; Central Nervous
System depression; liver, kidney disease, cardiac arrest, [Potential
occupational carcinogen]
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Eyes, skin, respiratory system, liver, kidneys, Cardiovascular
System, Central Nervous System
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Yes
Known
animal carcinogen.
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4.
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2-Butanone
(Methyl
Ethyl Ketone)
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110
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1000 (EPA Region 6 Screening
Level)
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--
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A moderately sharp, fragrant,
mint- or acetone-like odour
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Irritation eyes, skin, nose;
headache; dizziness; vomiting; dermatitis
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Eyes, skin, respiratory system,
central nervous system
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No
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5.
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n-Hexane
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17
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210 (EPA Region 6 Screening Level)
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--
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A gasoline-like odour
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Irritation eyes, nose; nausea,
headache; muscle weakness; dermatitis; dizziness
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Eyes, skin, respiratory system,
central nervous system, peripheral nervous system
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No
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6.
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Benzene
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9.09
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0.250 (EPA Region 6 Screening
Level)
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36.36
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An aromatic odour
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Irritation eyes, skin, nose,
dizziness; headache, nausea, exhaustion; bone marrow depression; [potential
occupational carcinogen]
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Eyes, skin, respiratory system,
blood, central nervous system, bone marrow
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Yes
Cancer Site >[leukaemia]
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7.
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Toluene
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66
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400 (EPA Region 6 Screening Level)
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--
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A sweet, pungent, benzene-like
odour
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Irritation eyes, nose; weakness,
exhaustion, confusion, euphoria, dizziness, headache; discharge of tears;
anxiety, muscle fatigue, insomnia; liver, kidney damage
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Eyes, skin, respiratory system,
central nervous system, liver, kidneys
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No
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8.
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Ethylbenzene
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6.70
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1100 (EPA Region 6 Screening
Level)
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--
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An aromatic odour.
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Irritation eyes, skin, mucous
membrane; headache; coma
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Eyes, skin, respiratory system,
central nervous system
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No
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9.
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m,p- Xylenes
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14.0
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--
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--
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An aromatic odour.
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Irritation eyes, skin, nose,
throat; dizziness, excitement, drowsiness, incoordination, staggering gait;
nausea, vomiting, abdominal pain; dermatitis
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Eyes, skin, respiratory system,
central nervous system, gastrointestinal tract, blood, liver, kidneys
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No
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10.
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o-Xylene
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6.0
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730 (EPA Region 6 Screening Level)
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--
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An aromatic odour.
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Irritation eyes, skin, nose,
throat; dizziness, excitement, drowsiness, incoordination, staggering gait,
nausea, vomiting, abdominal pain
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Eyes, skin, respiratory system,
central nervous system, gastrointestinal tract, blood, liver, kidneys
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No
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11.
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N-Nonane
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22
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NA
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NA
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NA
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NA
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NA
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NA
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