ARCHIVED REPORTS XR0003748 - Laserfiche WebLink

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en viros® oxygenates were analyzed by EPA Method 8260 Analysis for the August 29, 1997 event included TPPH, BTEX, MTBE, and oxygenates Findings According to the owner of the well, the well is used exclusively to water the garden/yard area The water supplied to the house is from the City's water supply system Prior to purging and sampling, the depth to water was measured in the well Depth to water measurements ranged from 16 71 to 17 24 feet below grade (fbg) and are presented on Table 1 TPPH and BTEX were not detected in ground water samples collected from the well during the July 16, 1997 and August 5, 1997 sampling events MTBE was detected during these sampling events from the sample collected directly from the well (Sample 1) MTBE was not detected in the water samples collected from the spigot (Sample 2) during these sampling events The concentration of MTBE detected in Sample l collected during the July 16th sampling event was 5 9 parts per billion (ppb) by EPA Method 8020 and 8 1 ppb by EPA Method 8260 The concentration of MTBE detected in Sample 1 collected during the August 5th sampling event was 6 5 parts per billion (ppb) by EPA Method 8020 and 6 0 ppb by EPA Method 8260 No other oxygenate compounds were detected during the August 5, 1997 sampling event . On August 28, 1997, the property owner contacted Enviros and SJCPHS regarding his well A pump contractor, Universal Pump, was on-site removing and replacing the well pump as part of normal maintenance of the well The contractor stated that he did not want to install the new pump due to "contamination" When Enviros personnel arrived on-site at 1125 a m , the new pump had been installed and the contractor was no longer present on-site According to the property owner, the pump which was removed was approximately 20 years old, and the new pump was installed at a depth of 90 - 95 fbg The pump is connected to the system with galvanized piping In response to these reports, the well was re-sampled on August 29, 1997 At this time, the sampling contractor detected an oily/greasy product sheen on the water surface when collecting the water sample through the sampling port During this event, Sample 1 contained TPPH, BTEX, MTBE, and VOC concentrations and Sample 2 contained TPPH and BTEX as shown in Table 1 A sample of the product was collected for fingerprinting analysis Results of this analysis are pending The laboratory analytical results are presented in Appendix A Enviros proposes to continue monitoring this well on a quarterly basis along with the monitoring and sampling program established for the service station site 97371 2