ARCHIVED REPORTS XR0011236 - Laserfiche WebLink

Home Browse Search

TABLE 1 , I GROUNDWATER ELEVATION AND ANALYTICAL SUMMARY FORMER APACHE PLASTICS FACILITY ° 2050 EAST FREMONT STREET T CKTON CALIFORNIA Depth to Well Groundwater Ethyl- 7 otal Date Water Elevation Elevation GRO[21 Benzene Toluene benzene Xylenes MTBE WELL# Sampled (ft bgs) (ft msl) (ft msl) (pg/L) (Rg/L) (Rg/L) (Rg/L) (Rg/L) (1g1L) MW-18 M 05/24/04 49 34 NM NM 450 19 <1 0* <1 0* 1 1 <1 0* 08/23/04 5277 NM 190 17 054 17 10 <0 50 11/19/04 52 68 NM <50 4 0 <0 50 080 1 5 <0 50 03/03/05 5090 NM <50 <0 50 <0 50 <0 50 <0 50 <0 50 05/12/05 4878 NM 1,500 260 4 0 78 25 <2 5* 08/15/05 50 18 NM 2,600 430 18 100 23 5 <1 5* 11/22/05 50 12 NM 530 11 13 2 8 63 <0 50 02/07/06 4789 NM <200**** 4 2 12 <1 0**** 64 <1 0**** 04/24/06 4529 2028 -2501 390 110 2 0 15 057 <0 50 NOTES GRO=Gasoline Range Organics C4-C13 msl Mean Sea Level MTBE=Methyl tertiary butyl ether bgs=Below Ground Surface S=Shallow Wells(screened 40 to 70 feet bgs) pg/L = micrograms per liter M=Mid-Depth Wells(screened 85 to 90 feet bgs) D—Deep Wells(screened 94 to 120 feet bgs) A=Not Analyzed M=Not Measured or Well casing elevation has not been surveyed i i *=Reporting limits were increased due to high concentrations of target analytes **=Well MW-3 is obstructed at approximately 23 feet bgs ***=Well was previously identified as MW-I All groundwater samples have been collected from well VEW-2 ****=Reporting limits increased due to sample foaming [1] Confirmation analysis using VOA 2 of 5 [2]Reported as total petroleum hydrocarbons as gasoline(TPHG C3-C14+)prior to second quarter 2006 Historical monitoring and sampling data prior to May 18,2001,was submitted by previous consultants Copies of available tables summarizing this data are included in Stratus'Site Conceptual Madel (Appendix B),dated September 24,2002 Apache_Quarterty_Data Page 14 of 14 STRATUS