13.02.2013 Views

Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure AX7-1.3.2. Mammalian reproduction and growth toxicity data considered in<br />

development <strong>of</strong> the Eco-SSL.<br />

Source: U.S. Environmental Protection Agency (2005b).<br />

wildlife generally would occur at doses greater than the 2 to 8 mg/kg-day reported to be toxic to<br />

most animals in the 1986 <strong>Lead</strong> AQCD (U.S. Environmental Protection Agency, 1986a).<br />

AX7.1.3.4 Recent Studies on the Effects <strong>of</strong> <strong>Lead</strong> on Decomposers<br />

Recent studies on effects <strong>of</strong> Pb to two groups <strong>of</strong> decomposers are summarized in this<br />

subsection. Effects on terrestrial invertebrates, such as earthworms and springtails, are described<br />

first, followed by effects on microorganisms.<br />

Effects on Invertebrates<br />

Since the 1986 <strong>Lead</strong> AQCD, there have been several studies in which terrestrial<br />

invertebrates were exposed to Pb in soil. Many <strong>of</strong> these were reviewed during the development<br />

<strong>of</strong> the Eco-SSLs (U.S. Environmental Protection Agency, 2005b). The relevant in<strong>for</strong>mation<br />

from the Eco-SSL document is described below.<br />

AX7-81

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!