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SAN JOAQUIN COUNTY COMMUNITY DEVELOPMENT DEPARTMENT m: t X 1810 E.HAZELTON AVE.,STOCKTON,CA 95205-6232 c9�JFoa?�P PHONE:2091468-3120 Fax:2091468-3163 May 17, 1994 Debra C. Lewis `J U senior Geologist m qy 191994 Condor Earth Technologies, Inc. Post Office Box 3905 ENViRONMENTAL HEALTH Sonora, California 95370 PERMIT/SERVICES SUBJECT: QUARRY EXCAVATION PERMIT NO. QX-91-6 WINTER STABILIZATION AND RECLAMATION PLANS li Dear Ms�wis: On Friday, May 6th, I met with Scott Lewis in the field and reviewed the status of the quarry excavation site. The concrete blocks that had been stacked as retaining walls have been dismantled and either stock piled or removed from the site. The concrete retaining walls used to house the rock crusher are in the process of being dismantled. The bulk of the walls have been removed. The footing and floor area of this pit still need to be removed. The sedimentation and recirculation ponds are in various stages of drying. These ponds need to be sufficiently dry in order to be stabilized for final reclamation. From my observation, Condor is making a diligent effort to complete the winterization and stabilization of the site with what is apparently Terra's intent to proceed to final reclamation and closure. It also appears that Scott and Condor personnel are making a conscientious effort to identify all areas on the site of possible contamination. A work plan has been submitted to Environmental Health and Deputy District Attorney, David Irey for their review and ultimate approval. Their approval is necessary before work can commence in any area where there has been a toxic spill. Also, the issue of whether debri is buried at the site needs to have a final resolution between the operators, owners of the site, Environmental Health and the District Attorney's office. This particular issue is not critical as far as the winterization and stabilization of the site is concerned. It is, however, critical for final reclamation. No work, including the requested expansion of Phase I reclamation, will be authorized in these areas of concern without final resolution of the issues. It is my understanding that the site ceased to function as a quarry in September of 1993 . A surfacing mining operation is considered "idle" in accordance with Section 2727. 1 of the Surfacing Mining and Reclamation Act (SMARA) when the mining operation curtails its operation for a period of a year, or more, by 90%, or more, of the previous maximum annual mineral production, with the intent to resume those mining surfacing operations in the future. Section 2770 (h) of SMARA provides that within one (1) year of the surface mining operation becoming "idle" , the operator shall submit to the lead agency an Interim Management Plan. This section