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BiA. 86-1. Contract- No. 10A514 Page 30 of 48 The contract bid price per linear foot shall include all labor, tools, equipment,. materials and incidentals and for doing all work to construct a six foot minimum chain link fence around the perimeter of the excavation area, and later removing and disposing of same. GROUNDWATER AND SOIL SAMPLES: After the underground tank has been removed, the County representative and the Contract Administrator will examine the open site. If required, under the direction of the- County, the Contractor shall obtain soil samples. If groundwater is encountered, a sample will be taken- only atthe request of the County. The groundwater level should be encountered at a depth of greater than 30 feet. These samples shall be taken after the tank has- been removed or after contaminated soil has been removed from the excavated area, and as directed by the Contract Administrator. These- samples shall be collected and analyzed for diesel fuel oil using EPA method 8015. If it is determined by the County representative or Contract Administrator that other wastes may be present, then appropriate methods of analysis must be used to identify the material . Any deviation from the above test procedures herein shall be accompanied by a full explanation and with regulatory agency approval . Laboratory analysis results shall be evaluated using the California Administrative Code, Title 22,, Division- 4�, Chapter 30., Minimum Standards for Management of Hazardous and Extremely Hazardous Wastes, latest revision- as applicable. Laboratory results shall be reported- as mg/kg for soil' samples and- mg/liter for liquid samples .. SITE INVESTIGATION REPORT AND RECOMMENDATIONS: If contaminated material is found,. the Contractor shall provide an "Investigative Report", Eight copies of a draft report detailing the results of the site investigation and soil and water test results shall' be prepared and presented to Caltrans within 25 working days after final approval of this contract by the State. The Investigative Summary Report shall contain, but not be limited to: A. A complete description of all work done, including: 1. A description of the procedures used in obtaining and analyzing soil samples. 2. A description of the procedures used in obtaining and analyzing water samples; the condition of water samples immediately after recovering sample; and whether, in the opinion of the driller or geologist-, any significant mixing- of sediments and groundwater occurred before or during sampling.. 8.- Conclusions on the character and distribution (if any) of hazardous waste contamination of the site, and recommendations for removal of any waste. C. Classification of the material sampled into one or more of the waste categories shown in Table 2.1, Article 2, Subchapter 15, Chapter 3, Title 23, of the California Administrative Code.