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Tins <br /> Ms. Shawna Chamber June 20, 2003 <br /> California Department of Toxic Substances Control Page 2 <br /> Chambers 4 The last sentence in Section 3.3.3 The incomplete sentence has been <br /> is incomplete. deleted, as it had mistakenly remained <br /> when a large paragraph was broken <br /> into two smaller paragraphs. <br /> Chambers 5 State where the photoionization See the two sentences that have been <br /> detector readings can be found in added to the sixth paragraph of <br /> the PEA report. Section 6.1. <br /> Chambers 6 Clarify what maximum screening See the revised fourth sentence in the <br /> level for volatile organic second paragraph of Section 6.3.5. <br /> compounds was considered <br /> acceptable for deciding not to <br /> pursue deeper sampling. <br /> Chambers 7 Re-work Section 13 regarding See the revised final paragraph in <br /> analysis of soil samples for lead. Section 13.1. <br /> Chambers 8 Re-work the recommendations in See the revised Section 13.2. <br /> Section 13.2. <br /> Chambers 9 Indicate the California Registered See the revised boring logs in <br /> Professional who has reviewed the Appendix A. <br /> boring logs. <br /> Booze 1 Note that certain exposure With Dr. Booze's concurrence, all of <br /> pathways are not generally the exposure pathways have been <br /> required for PEA-type risk retained to provide a more health- <br /> assessments. conservative estimate of potential <br /> human health risks/hazards. <br /> Booze 2 The parameters used to calculate The PEF calculation has been <br /> the particulate emission factor modified to use the default parameters <br /> (PEF) need to be justified or specified in the relevant guidance <br /> default parameters should be used. document. <br /> Booze 3 DTSC's modified version of the The revised indoor air evaluation <br /> Johnson & Ettinger screening soil incorporates DTSC's modified version <br /> gas model should be used instead of the Johnson & Ettinger model, <br /> of the USEPA version. Default along with defensible site-specific <br /> parameters or defensible site- parameters (see Table 9 of the report) <br /> specific parameters should be or default parameters. <br /> used. <br /> Booze 4 The results from the total Reference doses provided by Dr. <br /> petroleum hydrocarbon analysis Booze for various hydrocarbon ranges <br /> need to be incorporated into the were incorporated into the revised <br /> PEA risk assessment. human health screening evaluation. <br /> P\PFA Lockclin d•1,ojt`Iemn1\1)1S( I.1,1 Joe <br />