On Fri, 05 Sep 2003 08:42:17 -0400, Pat Meadows
wrote:



2) were you concerned at all about toxic material leaching from the tires
into the soil?


I was.

I did what research I could on it, and I found *NO* evidence
of anything harmful leaching from the tires. Not much
information is available, but I could find nothing that
indicated harmful leaching: nothing at all.

I sent for Paul Farber's research sheet (the man who has the
Tire Crafting website), and he found no evidence of anything
harmful either.

The little evidence I *was* able to find on it indicated
that the tires are fine - from what I can gather, the few
tests performed indicate nothing harmful leaching.


" Waste tire in subgrade road beds" published by MPCA in February,
1990.


The following points summarise the findings of the study:
1. Tyre samples exposed to acidic solutions leach higher
concentrations of metals
than those subjected to neutral or basic solutions.
2. In neutral solutions (pH 7.0) tyre samples did not leach any
contaminants of worry.
3. Samples subject to a pH of 3.5 produced leachate metal
concentrations that
exceeded the Minnesota Department of Health Recommended Allowable
Limits
(RALs) for drinking water standards.
4. Metals detected in the highest concentrations included barium,
cadmium,
chromium, lead, selenium and zinc.


· 33,000 buried tired are leaching toxic chemicals into ground water
in Georgian Bay-area site which is 50 kms southeast of Owen Sound;
neighbours sue the province (Toronto Star, February 28, 1998)
http://www.cela.ca/media/mr980202.htm

1,3-butadienerugs, rug underpaddings, rubber tires, rubber consumer
products, nylon, gasoline, auto exhaust, groundwater leukemia,
lymph cancer, blood cell cancer; tumors of breast, bronchial tubes,
stomach, large intestine, liver, heart, thyroid (in mice: testicular
tumors, leukemia) (references 1-5)
http://www.rowatworks.com/Science/Tox_Chem_Table.html
1. Mehlman MA. "Dangerous and cancer-causing properties of products
and chemicals in the oil refining and petrochemical industry. VIII.
Health effects of motor fuels: carcinogenicity of gasoline--scientific
update". Environ Res. 59(1):238-49 (1992).
2. Landrigan PJ. "Critical assessment of epidemiologic studies on the
human carcinogenicity of 1,3-butadiene". Environ Health Perspect.
86:143-7 (1990).
3. Arce GT, Vincent DR, Cunningham MJ, Choy WN, Sarrif AM. "In Vitro
and In Vivo Genotoxicity of 1,3-Butadiene and Metabolites". Environ
Health Perspect. 86:75-78 (1990).
4. Melnick RL, Huff J, Bird MG, Acquavella JF. "1,3-Butadiene:
toxicity and carcinogenicity in laboratory animals and in humans".
Environ Health Perspect. 86:3-5 (1990).
5. Morrissey RE, Schwetz P, Sikov MR, Hardin BD, McClanahan BJ, Decker
JR, Mast TJ. "Overview of Reproductive and Developmental Toxicity
Studies of 1,3-Butandiene in Rodents". Environ Health Perspect.
86:79-84 (1990).