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SOIL CONTAMINATION CONTAINMENT ACT ON PLAN <br /> The Department of Public Works has established the Soil Contamination Cc ritainment Action Plan <br /> (SCCAP)for Thornton Drainage Project,Phase 5. The SCCAP is a safety n ieasure for contractor working <br /> within the trench area in handling Class I1 - "Designated Waste." The San J aquin County Public Health <br /> Services has reviewed and approved SCCAP for this project. <br /> 1. Engineer and Contractor shall observe soil for petroleum odor and b luish discoloration indicating <br /> contamination. If such material is found,take the following actions immediately. <br /> 2. Engineer shall place a Low Explosive Limit(LEL)Meter inside the working area for gas detection <br /> and if the meter alarm is set off,take proper actions to stop work. Before work can resume, repeat <br /> the test until the alarm is cleared. <br /> 3. Engineer shall collect samples of soil and groundwater of the contar iinated material within the <br /> working area. <br /> 4. Engineer shall collect soil samples in metal sampling containers from the backhoe bucket of <br /> contaminated soil observed at the frequency of one sample per 20 li ear feet of trenching. <br /> 5. Engineer shall collect groundwater samples in disposable bailers. The samples shall be placed in <br /> Volatile Organic Analysis(VOA)containers. All samples shall be tored in an ice container, <br /> pending laboratory delivery. <br /> 6. Engineer shall label the samples with the location,trench depth, time,date and sampler's name. A <br /> chain of custody shall be completed each day of all samples collectc d. <br /> 7. Engineer shall direct the Contractor to place contaminated material n the County right-of-way <br /> designated at east end of Stockton Street,northeast corner of Walnut Grove Road and Oak Road, <br /> or southwest corner of Lower Sacramento Road and Pine Road. <br /> 8. Contractor shall place contaminated material on and cover it with plastic. Then rope off the area <br /> as part of requirements. <br /> 9. Contractor shall backfill with clean native soil. Contractor shall nol over excavate the trenches <br /> other than as designated on the Plan or as directed by the Engineer. <br /> 10. Engineer shall record all activities associated with sampling and sto kpiling of contaminated <br /> material in the engineering diary and report the finding to Mary Me tys at San Joaquin County <br /> Public Health Services-telephone number(209)468-0337. <br /> 11. Engineer shall deliver the samples within 24 hours to the Stockton IGL Laboratory for BTEX and <br /> TPH-gas analysis. A San Joaquin County Purchase Order will also be submitted to the laboratory <br /> to authorize the analytical work. <br /> 12. Engineer shall sample the stockpiled soil for disposal characterizati n. <br /> 13. Engineer shall determine the remediation or disposal method of the contaminated material <br /> pursuant to applicable laws and regulations. <br /> Approved By: Date: December 26, 1997 <br /> MaryMeays 'enior RENS <br /> Site Mitigation Unit <br /> ,4�- L-r- <br /> Hai K. Le,Resident Engineer DE te: December 26, 1997 <br /> Field Engineering <br /> FE-M160.G2 <br />