Environmental

Recent Posts

California Court of Appeal upholds use of alternative listing methodologies for Prop. 65
Posted on 14 Jun 2011 by Thomas H. Clarke, Jr.

There are several methods by which a "chemical" (a term of art) can be listed under California's Proposition 65. See, for example, http://www.rmkb.com/index.cfm/publications/publication-details/?pkid=253 (pp. 3-5). In California Chamber... Read More

BPA, the never-ending saga
Posted on 24 Mar 2013 by Thomas H. Clarke, Jr.

Prior posts have reviewed various studies that indicate that BPA has estrogenic effects. In January 2013 the Office of Environmental Health Hazard Assessment (OEHHA) proposed listing BPA under California's Proposition 65 because OEHHA's evaluation... Read More

OEHHA proposes to list cyanide as a male reproductive toxicant under Proposition 65
Posted on 18 May 2011 by Thomas H. Clarke, Jr.

As you may recall from prior posts, the warning threshold for a "reproductive toxicant" under Proposition 65 is determined by finding a "no-effects" level, and then dividing that number by 1,000. The Office of Environmental Health... Read More

California Adds Methanol to the Prop 65 List as a Reproductive Toxicant
Posted on 22 Mar 2012 by Thomas H. Clarke, Jr.

The Office of Health Hazard Assessment ("OEHHA") [pronounced Oh-we-hah] has added methanol (CAS No. 67-56-1) to the list of chemicals known to the State to cause reproductive toxicity for purposes of Proposition 65. A "reproductive toxicant"... Read More

California Court of Appeal upholds use of alternative listing methodologies for Prop. 65
Posted on 14 Jun 2011 by Thomas H. Clarke, Jr.

There are several methods by which a "chemical" (a term of art) can be listed under California's Proposition 65. See, for example, http://www.rmkb.com/index.cfm/publications/publication-details/?pkid=253 (pp. 3-5). In California Chamber... Read More

OEHHA proposes to list cyanide as a male reproductive toxicant under Proposition 65
Posted on 18 May 2011 by Thomas H. Clarke, Jr.

As you may recall from prior posts, the warning threshold for a "reproductive toxicant" under Proposition 65 is determined by finding a "no-effects" level, and then dividing that number by 1,000. The Office of Environmental Health... Read More

California Adds Methanol to the Prop 65 List as a Reproductive Toxicant
Posted on 22 Mar 2012 by Thomas H. Clarke, Jr.

The Office of Health Hazard Assessment ("OEHHA") [pronounced Oh-we-hah] has added methanol (CAS No. 67-56-1) to the list of chemicals known to the State to cause reproductive toxicity for purposes of Proposition 65. A "reproductive toxicant"... Read More