Slide Presentation

Presented at the UNEP/OECD Meeting on Lead in Gasoline 12-13 December, 1996 (Paris)

by Mr. Michael Walsh

Consultant from Car Lead in Gasoline The Need For and Options For Its Elimination

Why Was Lead Added To Gasoline? Low Cost Octane Enhancer Higher Octane Allowed Better Engines More Efficient Higher Power Output Lead In Gasoline Causes Serious Problems High Ambient Lead Levels Precludes The Use of Catalytic Converters To Reduce CO, HC and NOx High Vehicle Maintenance Costs

Adverse Health Effects From Lead At low doses, toxic to brain, kidney, reproductive and cardiovascular systems Manifestations include impairments in intellectual function, kidney damage, infertility, miscarriage, and hypertension. At high exposures, lead is lethal to humans, inducing convulsions and irreversible hemorrhage in the brain. Long term exposures associated with increased risks of kidney cancer. Other Adverse Health Effects reduced sperm counts crosses the placenta and is accumulated by the fetus reduced birth weight reduced fetal skeletal growth

Other Adverse Health Effects - Continued increased blood pressure in adults population-based studies in which lead exposure and blood pressure are measured prospective studies in which blood pressure is monitored in persons as their lead exposures increase (usually in occupational settings, eg traffic police) case control studies in which lead exposure is measured and compared in persons with and without diagnosed hypertension Children Are Especially Susceptible increased likelihood of exposure, increased absorption, and increased susceptibility of the brain.

Blood Lead Levels Considered Elevated

Micrograms per Deciliter 35

30

25

20

15

10

5

0 1975 1980 1985 1990 Year Transportation Fuel Combustion Industrial Processes Solid Waste Median Blood Lead Level Lead Emissions Thousand Tons/Year 70

60

50

40

30

20

10

0 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 87% Decline In Average Ambient Lead Levels Over Same Time Period

Sapporo

Aomori

Akita Iwate

Yamagata

Sendai Koriyama

To ya m a Tochigi Virtually Ibaragi Urawa Eliminated Hachioji Leaded Shiga NagoyaShizuoka Fukuyama Okazaki Gasoline in the Tsu Takamatsu '70's Kochi Oita

Kumamoto

Miyazaki OKINAWA-KEN NANSEI ISLANDS

South America

GUYANA VENEZUELA FRENCH GUIANA COLOMBIA SURINAME ECUADOR

BRAZIL PERU

BOLIVIA

PARAGUAY CHILE Brazil Colombia ARGENTINA URUGUAY Canada

Arctic Bay

Cambridge Bay

Inuvik Repulse Bay

Frobisher Dawson Bay Yellowknife

Whitehorse

Churchill

Prince Edmonton Albert

Goose Bay Regina Calgary Winnipeg Vancouver Thunder Bay Quebec Victoria Montreal St. John's Ottawa To r on t o

United States

Since January 1, 1996 Central America

DOMINICAN CUBA REPUBLIC

VIRGIN BELIZE JAMAICA HAITI PUERTO ISLANDSANTIGUA AND BARBUDA RICO GUATEMALA HONDURAS ST. KITTS GUADELOUPE EL SALVADOR NICARAGUA MARTINIQUE Guatemala ST VINCENT AND BARBADOS El Salvador COSTA RICA PANAMA THE GRENADINES GRENADA Honduras Nicaragua Costa Rica

Southeast Asia

INDIA

BURMA VIETNAM LAOS

THAILAND Thailand CAMBODIA PHILIPPINES

MALAYSIA MALAYSIA

SINGAPORE

I N D O N E S I A Europe

ICELAND SWEDEN FINLAND

NORWAY

Sweden

UNITED DENMARK Austria KINGDOM Denmark IRELAND GERMANY POLAND Finland

BELGIUM CZECH REPUBLIC LUXEMBOURG Germany SLOVAKIA AUSTRIA Switzerland SWITZERLAND HUNGARY FRANCE SLOVENIA ROMANIA CROATIA Slovakia

MONACO BOSNIA ITALY SERBIA ANDORRA BULGARIA ALBANIA MACEDONIA

SPAIN GREECE PORTUGAL

MALTA

Asia

RUSSIA

KAZAKHASTAN MONGOLIA

NORTH KOREA UZBEKISTAN JAPAN GEORGIA KYRGYZSTAN AZERBAIJAN SOUTH TURKMENISTAN TAJIKISTAN TURKEY CHINA KOREA

SYRIA AFGHANISTAN IRAQ IRAN NEPAL JORDAN PAKISTAN BHUTAN

BANGLADESH TAIWAN SAUDI INDIA BURMA ARABIA LAOS

PHILIPPINES OMAN THAILAND VIETNAM CAMBODIA YEMEN

SRI LANKA MALAYSIA

PAPUA INDONESIA NEW GUINEA Asia

RUSSIA

KAZAKHASTAN MONGOLIA

NORTH KOREA UZBEKISTAN JAPAN GEORGIA KYRGYZSTAN AZERBAIJAN SOUTH TURKMENISTAN TAJIKISTAN China by TURKEY CHINA KOREA SYRIA AFGHANISTAN 2000? IRAQ IRAN NEPAL JORDAN PAKISTAN BHUTAN

BANGLADESH TAIWAN SAUDI INDIA BURMA ARABIA LAOS

PHILIPPINES OMAN THAILAND VIETNAM CAMBODIA YEMEN

SRI LANKA MALAYSIA

PAPUA INDONESIA NEW GUINEA

Africa

TUNISIA MOROCCO

ALGERIA LIBYA EGYPT WESTERN SAHARA

MAURITANIA MALI NIGER ERITREA CHAD SENEGAL SUDAN DJIBOUTI THE GAMBIA BURKINA GUINEA-BISSAU GUINEA TOGO NIGERIA ETHIOPIA COTE SIERRA-LEONE BENIN CENTRAL D'IVOIRE LIBERIA GHANA AFRICAN REPUBLIC CAMEROON UGANDA SOMALIA EQUATORIAL GUINEA KENYA GABON RWANDA CONGO ZAIRE BURUNDI ANGOLA TANZANIA

ANGOLA

ZAMBIA MALAWI

MOZAMBIQUE ZIMBABWE MADAGASCAR

NAMIBIA BOTSWANA

SWAZILAND

SOUTH LESOTHO AFRICA Unleaded Gasoline Is Becoming Dominant Worldwide

1995 Gasoline Sales Worldwide

Leaded 28.0%

Unleaded 72.0%

Can Unleaded Gasoline Be Used In Old Vehicles? Valve Recession Problem Has Not Materialized Need Sustained High Speed, High Load Operation Lead Substitutes Exist if Needed (Sodium & Sulfur) No Other Impediments Identified Economic Benefits of Reducing Lead Exposure

Earnings Loss Infant Mortality Millions 8,000

6,000

4,000

2,000

0 1 microgram/deciliter reduction One year's cohort of US Children $5,307 per IQ Point

Issue: How To Produce Lead Free - Low Lead Gasoline Options For Replacing Lead Lower Octane Requirement For Vehicles Adding Lead Substitutes Refinery Modifications

Possible Refinery Modification To Replace Lead In Gasoline Increase Reformer Severity to Raise Reformate Octane Increase Production/Use of High Octane Blendstocks Reformate FCC Gasoline Alkylate Isomerate Oxygenates Issue: Fast Track or Slow Track

s k Ris

Leaded Health Gasoline Lead Slow Transition High Cost Alternatives Quick Lead Inv Free e stmen Cost t, Lo w

Problems With A Slow Transition Risks of Contamination Deliberate Accidental Expense of Dual Distribution System Delivery Pumps & Storage Vehicles Administrative Problems With A Quick Transition Potentially High Refinery Investment Infrastructure Adaptation

Policy Options For Lead Free Command and Control Vehicle Market Driven Fuel Pricing Combination Impact of Lead On Emissions Catalyst Equipped Cars

Normalized Emissions 20

108.2, 15.3 15

86.1, 12.15 161.1, 11.89 43, 11.38 120.8, 11.33 64.2, 10.51 10 21.5, 9.6 80.5, 9.56 40.3, 8.65

61.5, 6.15 46.1, 5.56 0, 5.17 73.9, 5.01 120.8, 4.87 161.1, 5.33 0, 4.35 30.7, 4.58 55.7, 4.46 108.2, 4.69 5 18.4, 3.74 73.9,80.5, 86.1,3.77 4.08 4.17 0, 3.2415.4, 3.6437.1,43, 3.63 3.5355.7,64.2, 3.42 3.72 0, 2.96 21.5, 2.6140.3,46.1, 3 2.5961.5, 2.86 30.7,37.1, 2.03 2.35 120.8, 1.9 161.1, 2.08 15.4,18.4, 1.52 1.71 43, 1.2755.7,64.2, 1.2873.9, 1.341.2680.5, 86.1,1.2586.1, 1.591.44 1.321.5NMHC108.2, 1.691.32120.8, 1.7 0,0,0, 0.790.820.9 115.4,18.4,21.5, 0.88 30.7,1.09 0.940.7437.1,40.3, 0.9343,46.1, 0.731.08 1.170.921.011.0755.7, 0.750.9861.5,61.5, 1.060.97 73.9,0.830.73 180.5, 1.171.08 1.08 120.8, 1.12 161.1, 1.17 0,0, 0.290.310.360.390.220.230.70.315.4,18.4, 0.440.36 30.7,0.530.4530.7,37.1, 0.59 0.546.1, 0.65 0.67 0 0 50 100 150 200 Grams Of Lead

Trends In Lead Emissions & Air Quality In The US

Lead Emissions 87% Decrease in Thousand Tons/Year Average Ambient 80 Lead Levels in 189 Urban Sites Over 60 This Same Period

40

20

Transportation Fuel Combustion Industrial Processes Solid Waste

0 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Leaded Gasoline Should Be Eliminated Alternatives Are Widely Available Health Concerns No Longer Debateable Catalysts Are Best Solution To CO, HC, NOx Problems Modern Engines Designed For Lead Free Fuel