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STATE OF CALIFORNIA--HEALTH AND WELFARE AGENCY GEORGE DEUKMEJIAN, Gownar <br /> DEPARTMENT OF HEALTH SERVICES <br /> TOXIC SUBSTANCES CONTROL PROGRAM <br /> REGION 1 March 13, 1990 <br /> 10151 CROYDON WAY <br /> SACRAMENTO,CA 95827-2106 <br /> (916)855-7700 <br /> MAM�N,�A�H�,SL�N <br /> Mr. Rod Gonzales ENVP <br /> California Cedar Products <br /> 1340 W. Washington <br /> Stockton, CA 95203 <br /> Dear Mr. Gonzales: <br /> As you are aware, the Department of Health Services (DHS) <br /> conducted ambient air sampling at the McCormick and Baxter <br /> Creosoting Company (M&B) in August and October 1989. <br /> Although our sampling effort was limited, the results <br /> indicate air emissions above the one in a million (1x10 ) <br /> cancer risk for arsenic and pentachlorophenol (PCP) are <br /> leaving the M&B facility. Our preliminary sampling at the <br /> M&B property line and Cedar Products raises the possibility <br /> that the dust and vapor emissions could impact the workers at <br /> Cedar Products. Soon, M&B will begin conducting an extensive <br /> air monitoring program to determine if there is an impact on <br /> the neighboring community. <br /> In our study, air samplers were located at the various points <br /> (Attachment 1) on the southern boundary of the facility and <br /> at Cedar Products. An upwind sampler was located at the <br /> Union Ice Company, which is north of the facility and across <br /> Old Mormon Slough to obtain background air concentrations. <br /> The predominant wind direction is from the north to <br /> northwest. Sample location 2 (Episode 1, 2) , location 3 <br /> (Episode 1, 2) , location 2 (Episode 3 , 4) , and location 2 <br /> (Episode 5, 6) are upwind of Cedar Products and are described <br /> as interceptor points between the M&B facility and Cedar <br /> Product. <br /> Air samples were analyzed for three constituents. The first <br /> one is "inhalable pentachlorophenol. " The sample collected <br /> PCP vapor emissions and PCP contaminated dust. The second <br /> type of sample is "inhalable arsenic" . The sample collected <br /> arsenic contaminated dust in the respirable size range. The <br /> third sample is "total arsenic" . The size range collected is <br /> unlimited and collects all size (inhalable or larger) <br /> particulates suspended in the air. <br /> Table 1 shows the results which may affect Cedar Products. <br /> The upwind sample results indicate a background level and <br />