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EL RANCHO ROCK & SAND, INC. QUARRY <br /> INVESTIGATION REPORT #2 <br /> SURFACE STAINS & SPILLS <br /> PAGE 2 <br /> Areas of localized surface soil staining are present in other areas of the site as well. Apparent <br /> contaminated soil is located adjacent to two concrete pads that are scheduled for demolition and <br /> removal; these pads are designated "B" and "C" in Figures 3 and 4. In addition, the operation <br /> of heavy equipment during operation of the plant and quarry, during dismantling of the plant, <br /> _ and during the implementation of reclamation efforts appears to have (and may still yet) resulted <br /> in minor drips and puddles of fuels and oils. These probably resulted from incidents such as <br /> hydraulic and fuel system leaks and line ruptures. The preliminary estimate of the volume of <br /> these spills, based on the limited surface areas of the stained soils, ranges from a few ounces <br /> to a few gallons of fuel or oils. The land owner's equipment for loading stockpiled sand and <br /> gravel, used on the site following plant closure and after removal of the processing plant, also <br /> _ appears to have suffered periodic leaks and minor spills. These various localized areas of <br /> discharged oil and diesel fuel are indicated by minor dark surface stains. The locations of <br /> surface stained areas observed to date are indicated in Figure 4. <br /> A few containers of apparent hazardous materials have been identified at the site. Most are <br /> present in the bone yard area. These containers consist of: several buckets and barrels <br /> containing up to five gallons of apparent used motor oil and grease from the salvaged equipment; <br /> one bucket of apparent roofing tar (partly spilled); a few fuel and hydraulic oil tanks and <br /> cylinders from the salvaged equipment (amounts of remaining fuel and oil unknown); and two <br /> old batteries. The present locations of these containers are indicated in Figure 4. <br /> 3.0 CHARACTERIZATION METHODOLOGY <br /> This section describes the methodology for documentation and characterization of the potentially <br /> contaminated soil that is indicated by surface staining present in work areas associated with <br /> implementation of the Reclamation Plan. Project management and supervision has been provided <br /> by Condor Earth Technologies, Inc., under the direction of a California Certified Engineering <br /> Geologist, on behalf of El Rancho Rock and Sand, Inc. <br /> 3.1 Health and Safety Plan <br /> -" The Health and Safety Plan was presented to all field crew workers for their review prior to start <br /> up of the reclamation. Prior to start up of field work, a "tailgate safety meeting" was held. A <br /> copy of the Health and Safety Plan is attached to the Work Plan. <br /> 3.2 Response Activities <br /> The San Joaquin County Department of Environmental Health (SJCDEH) was apparently aware <br /> of some of the surface staining prior to Condor's submittal of the Work Plan dated April 22, <br /> _ 1994. Condor notified the SJCDEH in that Work Plan of how these surface stained areas would <br /> be addressed. This Investigation Report (Report #2) further identifies the locations of these <br /> areas and describes in more detail how they will be addressed. <br /> L? CONDOR <br />