SITE INFORMATION AND CORRESPONDENCE

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CLEANUP AND ABATEMENT ORDER NO. R5-2007-0725 DOLLY MADISON/LANGENDORF BAKERY 1426 S. LINCOLN ST., STOCKTON SAN JOAQUIN COUNTY _10- RISK ASSESSMENT 5. By 16 November 2007, submit a risk assessment to demonstrate whether the discharges of waste pose unacceptable risks to human health or the environment. The site-specific risk assessment must use the Office of Environmental Health Hazard Assessment (OEHHA) toxicity data (California cancer slopes). If the risk assessment suggests that the discharges of waste pose a threat to human health, the report shall include a Workplan to abate the risk or exposure. The proposed abatement work shall begin within 60 days of approval by Regional Board staff, or by 1 February 2008, whichever is sooner. SITE ASSESSMENT 6. By 16 November 2007 submit.a Site Investigation Workplan (Workplan) to collect a sufficient number of soil, soil vapor and groundwater samples to determine the lateral and vertical extent of waste constituents and the complete site characterization. The work plan shall contain the information in Appendix A, which is made part of this Order. 7. Within 30 days of staff concurrence with the Workplan, but no later than 1 January 2008, implement the work plan in accordance.with the approved time schedule, which shall become part of this Order. i 8. Submit results of the site investigation in a Preliminary Investigation and Evaluation Report (PIER) in accordance with the approved time schedule, but no later than 1 March 2008. The.PIER shall include recommendations and, if needed, a second Workplan for additional investigation. If additional investigation is necessary, the Workplan shall include a time schedule for completing the work and submitting the results. 9. Within 30 days of staff concurrence with the Workplan for additional site assessment, and in accordance with the approved time schedule, implement the Workplan. 10.Upon defining the extent of wastes, but no later than 1. May 2008, submit a Problem Assessment Report (PAR) which includes information from the implementation of the Workplan and sufficient detail on the nature and extent of the discharges of waste to provide a basis for future.decisions regarding subsequent cleanup and abatement actions.