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EGG GREGG DRILLING AND TESTING, INC <br /> GREGG IN SITU, INC <br /> ENVIRONMhNTAL AND GEOTECHNICAL INVESTIGA I[ON SERVICES <br />' September 26, 2005 <br /> Advanced Geo <br />' Attn• Bill Little <br /> 837 Shaw Rd <br /> Stockton, California 95215 <br />' Subject CPT Site Investigation <br /> West Clay <br />' Stockton, California <br /> GREGG Project Number. 05-392MA <br />' Dear Mr Little- <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 (SCFl U) ❑ <br /> 4 Resistivity Cone Penetration Tests (RCPTU) ❑ <br /> 5 UVIF Cone Penetration Tests (UVIFCPTU) ❑ <br />' 6 Groundwater Sampling (GWS) <br /> 7 Soil Sampling (SS) ❑ <br />' 8 Vapor Sampling (VS) ❑ <br /> 9Vane Shear Testing (VST) ❑ <br /> 10 SPT Energy Calibration (SPITE) ❑ <br /> 1 <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 hesEtate to contact our office at(562) 427-6899 <br />' Sincerely, <br /> GREGG IN SITU, Inc <br />' Mary Walden <br /> Operations Manager <br /> 950 Hox5 a Rd o Martinez,Cahforn[a 94553 0(925)313-5800 o FAX(925)313-0302 <br /> OTI M OFFICES SLTDIIEM ILLS.LOS ANC;EI FS•SALT L kIM VITS (NJ)*AT TGLTST J, <br /> u� n a drftl(n rnn <br />