|
' Soil and Groundwater Investigation Work Plan
<br /> Vernalis Offsite April 2007
<br /> ' 3.5 INVESTIGATION-DERIVED WASTE (IDW)
<br /> IDW—soil cuttings and unused soil sample, disposable sampling equipment,used personal protective
<br /> ' equipment,and decontamination water—will be placed in U.S.Department of Transportation-rated,
<br /> 55-gallon drums that will be properly labeled, secured, and stored pending disposal by Sturgeon& Sons,
<br /> Inc.,a direct-bill CEMC contractor. Existing soil and groundwater profiles from previous investigation
<br /> ' results may be used to characterize the IDW. If needed, composite IDW samples will be collected and
<br /> submitted to Lancaster for profiling. IDW will be segregated, sampled,analyzed, and disposed of
<br /> consistent with Chevron's Operational Excellence Process document entitled HPP-BTR Waste
<br /> ' Management Process.
<br /> 4. REPORTING AND SCHEDULE
<br /> SAIC will evaluate project data to determine the extent of affected soil and groundwater and prepare a
<br /> SGIR that will document the project results. The SGIR will contain the elements identified in, and
<br /> project data will be evaluated in accordance with,the draft document entitled Guidelines for Soil and
<br /> Groundwater Investigation Reports(SAIC,2007). The report will present conclusions and
<br /> ' recommendations to facilitate any future additional investigation, risk assessment,and/or remedial
<br /> options required for No Further Action status.
<br /> ' SAIC anticipates beginning the investigation within 30 days following RWQCB acceptance of this work
<br /> plan and procurement of all necessary permits,bonds,and access agreements. The associated SGIR will
<br /> be submitted to the RWQCB no later than 90 days after receipt of all final laboratory reports.
<br /> ' 5. REFERENCES
<br /> EPA,2004. Region 9 PRGs Table.http://www.epa. og_v/region9/waste/sfund/prg/index.html#pr tg able.
<br /> ' October.
<br /> Geological Technics, Inc., 1995. Preliminary Environmental Site Assessment: Vernalis Property, 35500
<br /> Welty Road, Vernalis, California. February.
<br /> Geomatrix, 1999. Site Investigation Report and Screening-Level Health Risk Assessment. February.
<br /> , 2002. Report of Soil and Groundwater Investigation, Former Vernalis Pump Station, Vernalis,
<br /> ' California. August.
<br /> 2004. Report of Soil and Groundwater Investigations, Former Vernalis Pump Station, Vernalis,
<br /> California. January.
<br /> ' , 2005. Technical Approach to Site Evaluation and Decision Making, Historical Pipeline
<br /> Portfolio, Central Valley Region (CTA). February.
<br /> Radian, 1998. Preliminary Site Investigation Work Plan:Roberts Property. July.
<br /> ' RWQCB (Central Valley),2004. Beneficial Use-Protective Water Quality Limits for Components of
<br /> Petroleum-Based Fuel. April.
<br /> 2006. Review—Soil and Groundwater Investigation Report— Vernalis Pump Station, 35500
<br /> Welty Road, Vernalis, San Joaquin and Stanislaus Counties. September.
<br /> RWQCB (San Francisco Bay),2005. Screening for Environmental Concerns at Sites with Contaminated
<br /> ' Soil and Groundwater(Interim Final). February.
<br /> SAIC,2006a. Soil and Groundwater Investigation Report, Vernalis Pump Station, Vernalis, California.
<br /> August.
<br /> ' 12006b. Quality Assurance& Quality Control Sample Collection, Handling, and Analysis
<br /> Guidelines, Chevron Historic Pipeline Portfolio Sites, California. January(Updated).
<br /> ' , 2007. Guidelines for Soil and Groundwater Investigation Reports (working draft).
<br /> 7 ==
<br /> a—Z—.
<br /> From Science to Solutions
<br />
|