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L.r <br /> EGG GREGG DRILLING AND TESTING,INC. <br /> GREGG IN SITU, INC. <br /> ENVIRONMENTAL AND GEOTECHNICAL INVESTIGATION SERVICES <br /> i <br /> April 14, 2004 <br /> ATC <br /> Attn: Nathan Christman <br /> 1117 Lone Palm Avenue, Suite 6 <br /> Modesto, California 95351 <br /> Subject: CPT Site Investigation <br /> Piedmont Lumber <br /> Tracy, California <br /> r GREGG Project Number: 04-110ma <br /> Dear Mr. Christman:" <br /> The following reportpresents the results of GREGG IN SITU's Cone Penetration Test <br /> C investigation for the above referenced site. The following testing services were performed: <br />! L <br /> 1 Cone Penetration Tests (CPTU) X <br /> 2 Pore Pressure Dissipation Tests (PPD) X <br /> _ 3 Seismic Cone Penetration Tests (SCPTU) ❑ <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 /> 9 Vane Shear Testing (VST) ❑ <br /> 10 SPT Energy Calibration (SPTE) ❑ <br /> i <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 orshould you have any questions or comments regarding the contents of this <br /> 1 report, please do not hesitate to contact our office at (562) 427-6899. <br /> Sincerely, <br /> GREGG IN SITU, Inc:' <br /> Mary Walden <br /> r Operations Manager <br /> 950 Howe Road•Martinez,California 94553•(925)313-5800•FAX(925)313-0302 <br />± OTHER OFFICES:SUMNIERVILLE•LOS ANGELES SALT LAKE CITY HOUSTON•VANCOUVER•WEST BERLIN(NJ)-AUGUSTA <br /> www.oregedrillin .ccoom <br /> i <br /> 1 " <br />