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G Superior Precision Anal vtical, Inc. - <br /> 1 555 Burke, Unit I ■ San Francisco, California 94124 (4 15) 647-2081 /fax (4 15) 82 1-7 123 <br /> TOUCHSTONE DEVELOPMENTS Project 5490-2 <br /> Attn: MICHAEL TAMBRONI Reported 14-October-1993 <br /> PH by EPA Method 1.50.1 <br /> Chronology Laboratory Number 14810 <br /> Identification Sampled Received Extracted Analyzed Run # Lab <br /> i <br /> 1 <br /> HSP-IA-D 10/08./93 10/.08/93 / / 1.0/13/93 2 f <br /> 1 <br /> 1 <br /> - f <br /> Page 1 of 2 <br /> Certified laboratories <br />