# Lead: Human Exposure and Health Risk Assessments for Selected Case Studies

Volume II. Appendices

[EPA-452/R-07-014b]

October 2007

Errata – October 10, 2008

1. p. A-72 – A footnote was inadvertently omitted from Attachment A-2 (Table 4). The

footnote should have been associat ed with entries for mean and 95 th 

# percentile ratio of

max quarterly mean to annual mean and for mean ratio of max monthly mean to annual

mean for urban sites in CBSAs > 1M population. This footnote should have stated

“These values rounded to 2.5, 7.6 and 4.0, respec tively, in a preliminary analysis of 92

sites in this subset. Subseque nt QA lead to a change in dataset and the statistical metric

values.” Corrected Table shown on following page.

2. p. B-19, EC/R Incorporated. (2006) – The citation is incorrect. The co rrect citation is as

follows: EC/R Incorporated. (2006) S econdary Lead Smelter Industry– Source

Characterization for Residual Risk Assessment. Prepared for U. S. Environmental

Protection Agency, Office of Air and Radi ation, Office of Air Quality Planning and

Standards; November.

3. p. G-47, Freed et al (1983) – The citation is in correct. The correct ci tation is as follows:

Freed, J. R.; Chambers, T.; Christie, W. N.; Carpenter, C. E. (1983) Methods for

Assessing Exposure to Chemical Substa nce (Volume 2). EP A 560/5-83-015: pp.70-73.

USEPA, Office of T oxic Substances.

4. p. E-22, Alabama National Resources Conser vation Service (2006) – The citation is

incorrect. The correct citation is as follows : National Resources Conservation Service

(NRCS). (2006) Soil Survey Geographic (SSU RGO) Database for Pike County. Fort

Worth, TX: U.S. Department of Agri culture (USDA). Available online at:

http://soildatamart.nrcs.usda.gov/Survey.aspx?County=AL109

.Table 4. Pb-TSP metric ratio distribution statisticsTSP CategoryRatioSitesminpct5pct10pct15pct20pct25pct30pct35pct40pct45medianmeanpct55pct60pct65pct70pct75pct80pct85pct90pct95maxratio of max quarterly mean to annualmean1.00001.11351.20801.28521.34331.38481.48371.52991.61271.70791.78462.35411.88932.00252.14212.31642.54742.78533.20233.92335.986812.0000All sitesratio of max monthly mean to annualmean1891.00001.35531.55561.81761.95372.14752.28172.40362.54712.62652.83104.41592.96343.50184.01284.42734.98715.76756.50388.546211.842439.0000ratio of 2nd max monthly mean toannual mean0.00001.12111.30571.42961.58221.67841.75971.83111.90922.03462.12462.57282.20332.30152.44532.59082.76503.09863.52003.98006.643912.1935ratio of max quarterly mean to annualmean1.00001.07871.24841.31671.35291.39661.50771.52051.55591.70791.75712.04711.80851.90701.97592.12852.34862.47062.76423.28653.85927.5516Source-oriented sitesratio of max monthly mean to annualmean601.00001.47351.83181.97682.16412.27162.35282.52022.58242.73792.90863.74853.06253.50733.69004.04014.50924.65365.30126.282610.202913.5518ratio of 2nd max monthly mean toannual mean1.00001.40881.65431.68151.78641.82921.88381.94382.01242.10002.17232.43562.27842.40172.50342.52932.63952.79603.32633.51933.86399.8590ratio of max quarterly mean to annualmean1.00001.13681.20341.26481.30951.38261.47531.55911.63321.70791.81512.49801.96652.02932.24982.41532.68992.93903.45554.16477.357712.0000Non-source-oriented sitesratio of max monthly mean to annualmean1291.00001.31401.47691.65781.86802.01642.24962.36712.52002.58512.79674.72872.95083.48234.08584.57235.59276.32237.64739.139612.193539.0000ratio of 2nd max monthly mean toannual mean0.00001.07461.24451.32941.42961.55821.66571.75561.83721.92002.11852.63712.18182.26332.39122.63162.82453.21743.82744.50007.526712.1935ratio of max quarterly mean to annualmean1.00001.00001.00001.00001.00001.28441.28441.49611.49611.51951.51952.20491.51951.72661.72661.94921.94922.31702.31707.55167.55167.5516Previous source-orientedsitesratio of max monthly mean to annualmean131.00001.00001.00001.00001.00001.75151.75151.87461.87462.76262.76263.47512.76262.78632.78633.70623.70624.64784.647811.746911.746911.7469ratio of 2nd max monthly mean toannual mean1.00001.00001.00001.00001.00001.77591.77592.14142.14142.59692.59694.90662.59693.09863.09868.41318.41319.85909.859014.274714.274714.2747ratio of max quarterly mean to annualmean1.00001.16051.25041.30701.35361.42271.50101.57121.64271.71671.77732.33131.86832.00722.15082.31672.58902.75813.17703.92795.687812.0000Urban sitesratio of max monthly mean to annualmean1401.00001.33911.59251.77711.92202.11332.29362.41052.54232.63412.83104.23952.95183.49764.03074.49985.11225.83646.68898.412211.772336.0000ratio of 2nd max monthly mean toannual mean0.00001.18891.32711.47001.60531.67841.76601.86061.99672.10382.16502.65322.24522.36372.50512.62132.78593.02133.72204.14637.407812.1935ratio of max quarterly mean to annualmean1.00001.10771.20801.27451.30951.37591.47531.51671.61571.68291.73662.3159*1.79001.84512.04962.31642.43172.70333.00633.81417.3577*12.0000Urban sites in CBSAs>1M populationratio of max monthly mean to annualmean911.00001.30461.47691.65781.83461.99102.26762.36902.53702.56192.67264.0747*2.87142.95083.58684.02534.64785.63576.48928.00009.377036.0000ratio of 2nd max monthly mean toannual mean0.00001.07461.30571.40891.49651.58551.65531.74911.78901.89602.09822.41552.14142.26332.39122.50042.59692.76593.09863.66217.28889.8590ratio of max quarterly mean to annualmean1.00001.26481.35221.38381.41521.52991.56081.61271.69011.95052.00252.35972.00912.17152.24982.62232.72413.13953.45553.97624.87187.6772Urban sites in CBSAs <1M populationratio of max monthly mean to annualmean491.00001.43921.73651.96152.08982.20332.30562.50352.64172.95283.12074.54563.52864.40554.57235.00005.54975.86807.33409.332612.193519.1113ratio of 2nd max monthly mean toannual mean1.00001.31161.66981.74511.87871.98432.03462.12352.16732.20332.34353.09462.36842.69532.76422.93023.81993.98004.40105.50058.426912.1935