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California RegOnal Water Quality C011trol Board <br /> vCentral Valley Region <br /> Robert Schneider,Chair <br /> Winston H.Hickox <br /> ray Day.�s <br /> Secretaryfor Sacramento Main Office C4 Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/mgcb5 � <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 ,tn <br /> Phone(916)255.3000•FAX(916)255-3015 <br /> 15 May 2003 a <br /> CERTIFIED MAIL pr <br /> 7000 0520 0024 2571 3891 ;= <br /> v <br /> Mr. Brian Miller <br /> Agrium <br /> 1220 Potter Drive p <br /> West Lafayette, IN 47906 <br /> INFORMATION REQUIREMENT PURSUANT TO <br /> WATER CODE SECTION 13267 <br /> WESTERN FARM SERVICE, <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> In a 5 December 2002 letter, California Regional Water Quality Control Board, Central Valley <br /> Region(Regional Board) staff requested Western Fann Service (WFS) for information to <br /> supplement the June 1999 Draft Human Health Risk Assessment and Risk-Based Cleanup Level <br /> Development Report and the July 2000 Response to Comments Draft Human Health Risk <br /> Assessment and Risk-Based Cleanup Level Development Report for the agricultural chemical <br /> facility at 1905 North Broadway Avenue in Stockton. Based on Office of Environmental Health <br /> Hazard Assessment comments, the letter specifically requested the following information: <br /> • A list of cleanup goals protective of the probabilistic 95th percentile health risk for an <br /> on-site residential child for soil and groundwater; <br /> • A list of cleanup goals using the deterministic approach protective of the one in a million <br /> cancer risk for an on-site residential child for soil; <br /> • Evaluation of health risk from chemical volatilization of groundwater constituents into <br /> indoor air pathways for both on and off site structures; <br /> • A table of groundwater elevation data as depth below ground surface (bgs) as opposed to <br /> mean sea level; and <br /> • A new table of soil analytical data that references depth from ground surface and is <br /> organized by area, then by the following depth intervals: 0-3 feet bgs, 3-15 feet bgs, and <br /> 15-70 feet bgs. <br /> California Environmental Protection Agency <br /> pia Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />