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EGG GREGG DRILLING AND TESTING, INC <br /> GREGG IN SI'T'U, INC <br /> IENVIRONMENTAL AND GEO1 ECHNICAL INVESTIGATION SERVICES <br /> June 12, 2004 <br /> Advanced Geo <br /> Attn, Paul Dotson <br />! 837 Shaw Road <br /> Stockton, California 95215 <br /> Subject. CPT Site Investigation <br /> 639 Clay Street <br /> Stockton, California <br /> GREGG Project Number 04-186ma <br /> IDear Mr Dotson <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 /> I 1 Cone Penetration Tests (CPTU) X <br /> 2 Pore Pressure Dissipation Tests (PPD) X <br /> 3 Seismic Cone Penetration Tests (SCPTU) ❑ <br /> I 4 Resistivity Cone Penetration Tests (RCPTU) ❑ <br /> 1 5 UVIF Cone Penetration Tests (UVIFCPTU) ❑ <br /> 6 Groundwater Sampling (GWS) X <br /> 7 Soil Sampling (SS) ❑ <br /> 8 Vapor Sampling (VS) ❑ <br /> 9 Vane Shear Testing (VS-) ❑ <br /> 10 SPT Energy Calibration (SPTE) 1 <br /> 11 <br /> IA 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 /> �e--- <br /> Mary Walden <br /> Operations Manager <br /> 950 Howe Road•Martinez,California 94553•(925)313-5800•FAX(925)313-0302 <br /> OTHER OFFICES SUM IS&RVILLE•LOS ANGELES•SALT LAKE CITY•HOUSTON•VANCOUVER•WEST BERLIN(NJ)-AUGUSTA <br /> www.greadriffing.coin <br />