Laserfiche WebLink
' IT Corporation <br /> 4005 Ant ( hu t-r, 1h_1t+ti n <br /> Concord C'I "1 522 1120 <br /> 1,1 q i 88 ')S')h <br /> Fix 02 i 288 0888 <br /> he �g�-oup S 11,rrrl,r r ,f 11:. !T f rr,��f' <br /> r <br /> ' ti <br /> May 8, 2000 ec hVy1__1 I VF-D <br /> ' Mr Bob DeNinno ENVY Ma Y 17 2000 <br /> 7-Eleven, Inc Ror4MENT <br /> 10220 S W Greenburg Road PER&41T Ij <br /> ' Portland, Oregon 97233 SERVpVICES10ES <br /> Subject Second Quarter 2000 Monitoring and Sampling Report <br /> ' 7-Eleven Store No 21756 <br /> 853 E Yosemite Avenue <br /> Manteca, California <br /> IT Corporation Project 781723 <br /> 1 <br /> Dear Mr DeNmno <br /> This Second Quarter 2000 Monitoring and Sampling Report presents the results of monitoring and <br /> sampling activities performed by IT Corporation at the subject site (Figures 1 and 2, Attachment 1) on <br /> April 7, 2000 A summary of activities conducted during this reporting period is provided below <br /> Depth to water (DTW)was gauged in three site-related groundwater monitoring wells <br /> ' Groundwater samples were collected from the three monitoring wells and submitted to a <br /> California-certified laboratory for analysis of benzene, toluene, ethylbenzene and total xylenes <br /> (BTEX), total petroleum hydrocarbons-as-gasoline (TPH-G), the oxygenates methyl-tent-butyl- <br /> ether (MTBE), tert-butanol (TBA), diisopropyl ether (DIPE), ethyl-te rt-butyl ether (ETBE), and <br /> ' tert-amylmethyl ether (TAME) <br /> Groundwater Monitoring Data <br /> Groundwater monitoring of the three wells MW-1, MW-2, and MW-3 was performed on April 7, 2000 <br /> Before monitoring, the well caps were opened to allow the water in each well to stabilize to atmospheric <br /> pressure The DTW was measured to the nearest 0 01 foot from the top of the well casing using an ORS <br /> Environmental Equipment INTERFACE PROBE T11 Well Monitoring System <br /> A potenttometnc surface map was prepared using the groundwater elevation data collected on <br /> April 7, 2000 (Figure 2) Based on the groundwater elevation data, groundwater flow is toward the <br /> tnorthwest at a gradient of 0 001 fUft The groundwater monitoring results from the April 7, 2000 <br /> monitoring and sampling event are presented in Table 1 (Attachment 2) Field data sheets are included in <br /> Attachment 3 <br /> • <br /> ' 2775642 rpt <br />