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 -12- 15.The Discharger shall insure that any soil vapor or groundwater extraction system(s) "zone of capture" completely envelops and controls the waste plume(s) (lines of zero waste in all targeted zones). If sampling results in any two consecutive months (or quarters) demonstrate that any part of the waste plume(s) is not within the "zone of capture", the Discharger shall include with the second status report a proposal to resolve the condition. The proposed actions shall be completed within 60 days (adjust as appropriate) of staff approval of the proposal. GROUNDWATER MONITORING 16.Monitor and sample quarterly all monitoring wells and threatened offsite water supply wells for TPHg, benzene, toluene, ethyl benzene, total xylenes, and fuel oxygenates including MtBE until otherwise directed in writing by the Executive Officer or her representative(s). Method Detection Limits (MDLs) shall be derived by the laboratory for each analytical procedure, according to State of California laboratory accreditation procedures. The MDLs shall reflect the detection capabilities of the specific analytical procedure and equipment used by the lab, rather than simply being quoted from USEPA analytical method manuals. In relatively interference-free water, laboratory-derived MDLs are expected to closely agree with published USEPA MDLs. 17.Submit Quarterly Status Reports by the 1s' day of the second month after the calendar quarter in which the samples were collected. The first quarter report is due 1 May, the second quarter report is due 1 August, the third quarter report is due 1 November, and the fourth quarter report is due 1 February. Quarterly reports are to include the information specified in Appendix A. GENERAL REQUIREMENTS 18.As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, have appropriate reports prepared by, or under the supervision of, a registered professional engineer or geologist and signed by the registered professional. All technical reports submitted by the Discharger shall include a cover letter signed by the Discharger. or an authorized representative, certifying under penalty of law that the signer has examined and is familiar with the report and that to their knowledge, the report is true, complete, and accurate. The Discharger shall also state if they agree with any recommendations/proposals and whether they approved implementation of said proposals. 19.Upon startup of any remediation system(s), operate the remediation system(s) continuously, except for periodic and required maintenance or unpreventable equipment