Laserfiche WebLink
y <br /> CLOSURE CHRONOLOGY FOR 298 W. <br /> GRANTLiNE RD., TRACY, CA <br /> W. T. Jordan <br /> i <br /> April 5 1988 Four USTs removed under PHS/EHD permit. Odor <br /> apparent below USTs. <br /> April 19, 1988 Soil and water samples collected beneath USTs evidence <br /> TPHg and BETX contamination. <br /> April 25, 1988 UAR and Prop 65 completed. <br /> September 12, 1988 Cleanup file created. <br /> i <br /> September 14-15, 1988 MWs 1, 2 and 3 were installed (Preliminary Site <br /> Assessment). <br /> November 30, 1988 Preliminary Site Assessment Report was received by <br /> PHS/EHD , soil and groundwater contamination (TPHg and <br /> BTEX) evidenced. <br /> July 5, 1990 RWQCB quarterly review. <br /> March 7, 1994 Contaminated site letter sent to RP from PHS/EHD UST <br /> Unit 3. <br /> September 2, 1994 Site entered LOP. LOP file created 9126194. <br /> October 13, 1994 NOR letter mailed to RP. <br /> February 22, 1995 Boring B 1 and B2 constructed to 10 feet bsg. Odors <br /> observed. <br /> April 17, 1995 Overexcavation observed by PHS/EHD at site. Approx. <br /> 75-108 cu. yds. of contaminated soil removed to Forward <br /> Landfill. Clean fill was replaced in excavated area. <br /> May 25 and June 26, 1995 Further trenching excavation (north, west and south of <br /> previous excavation—6' deep 20' wide) observed by <br /> PHS/EHD. Approx. 125 cu. yds. of contaminated soil were <br /> removed to Forward Landfill. Soil samples collected from <br /> 4 to 8 feet bsg along trench evidenced contamination. <br /> July Quarterly sampling of MWs resumes. <br />