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CHRONOLOGY <br /> "HUSKY CRANE" <br /> 2373 MARIPOSA ROAD,STOCKTON <br /> f <br /> Program: 35.27 Site Code: 1672 <br /> t <br /> 11/17/87 PHS-EHD discovers UST removed without permit or inspection. <br /> l <br /> 10/15/91 PHS-EHD Unit III inspector witnesses soil sampling at UST pit and notes "odor <br /> and discoloration" at "HC-2S" at 14 feet below ground surface (bgs). <br /> Approximately 30 cubic yards of soil in pit of 24'x 15'x 11'deep. <br /> 12/03/91 Laboratory soil results and incomplete work plan for remediation/ removal of <br /> contaminated soil received. <br /> 01/22/92 Over-excavation begins at site and ends with incomplete removal of contaminated <br /> soils due to over-head electrical wires interference. <br /> 11/24/92 Problem Assessment Report and Work Plan for 6 soil borings submitted. <br /> 09/08/94 Revised PAR/work plan received and approved. <br /> 10/03/94 Seven (7) soil borings placed onsite today under PHS-EHD permit SR#004294. <br /> 02/01/95 PHS-EHD reviews report of findings. Soil contamination present in most of the <br /> borings and soil plume not considered delineated by PHS-EHD. <br /> 06/14/95 PHS-EHD generates comment letter after site work stalls. Work plan for soil <br /> sampling for TPH-D not analyzed in previous work directed to be submitted by <br /> September 15, 1995. <br /> 09/15/95 Work plan received but does not include PHS-EHD requirements. <br /> 03/05/99 PHS-EHD receives a No Further Action (NFA) request. Site investigation missing <br /> vertical delineation and TPH-D analyses. <br /> 07/21/99 Work plan with addendum approved. Permit SR# 019985 issued for deep (70'b gs) <br /> soil boring in old UST pit to groundwater for grab. TPH-D and TEPH to be <br /> sampled in soil and groundwater. <br /> 07/30/99 On site for single soil boring thru old UST pit.".No soil contamination obvious and <br /> groundwater sample collected. <br />