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EGG GREGG DRILLING AND TESTING, INC <br /> GREGG IN SITU, INC <br /> ENVIRONMENTAL AND GEOTECIP41CAL INVESTIGATION SERVICES <br /> September 13, 2005 <br /> Stratus Environmental <br /> Attn Gown Kowtha <br /> 3330 Cameron Park Dr , Suite 550 <br /> Cameron Park, California 95682 <br /> fSubject CPT Site Investigation <br /> USA 835 <br /> Stockton, California <br /> GREGG Project Number 05-367MA <br /> Dear Mr Kowtha <br /> The following report presents the results of GREGG IN SITU's Cone Penetration Test <br /> investigation for the above referenced site The following testing services were performed <br /> 1 Cone Penetration Tests (CPTU) <br /> 2 Pore Pressure Dissipation Tests (PPD) <br /> 3 Seismic Cone Penetration Tests (SCPTU) ❑ <br /> 4 Resistivity Cone Penetration Tests (RCPTU) ❑ <br /> 5 UVIE Cone Penetration Tests (UVIFCPTU) ❑ <br /> 6 Groundwater Sampling (GWS) <br /> 7 Sod Sampling (SS) tE <br /> 8 Vapor Sampling (VS) ❑ <br /> 9 Vane Shear Testing (VST) ❑ <br /> 10 SPT Energy Calibration (SPTE) ❑ <br /> A list of reference papers providing additional background on the specific tests conducted is <br /> provided in the bibliography following the text of the report. If you would like a copy of any of <br /> these publications or should you have any questions or comments regarding the contents of this <br /> report, please do not hesitate to contact our office at (562) 427-6899 <br /> Sincerely, <br /> GREGG IN SITU, Inc <br /> /� <br /> Mary Walden <br /> Operations Manager <br /> fe <br /> 950 Hoii a Rd o Martinez,California 94553 0(925)313- 800®FAX(925)313-0302 <br /> OTHER Ok FICES SUI,4�IERY ILLE-LOS %NGELES•SALT LAKE CITY-HOUSTON+% aNCOM'ER+IVEST BERLIN(NI)-AUGUSTA <br /> cr'r" 2T Zgdnlhng coni <br />