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ARCHIVED REPORTS XR0000226
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3500 - Local Oversight Program
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PR0543430
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ARCHIVED REPORTS XR0000226
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Last modified
2/5/2019 11:31:35 AM
Creation date
2/5/2019 11:17:21 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0000226
RECORD_ID
PR0543430
PE
3528
FACILITY_ID
FA0009377
FACILITY_NAME
CAL TRANS MAINT SHOP 10
STREET_NUMBER
1603
Direction
S
STREET_NAME
B
STREET_TYPE
ST
City
STOCKTON
Zip
95206
APN
16918002
CURRENT_STATUS
02
SITE_LOCATION
1603 S B ST
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
Scanner
WNg
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EHD - Public
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Groundwater Analytical Results <br /> TPHg was detected in samples collected from wells MW-14, VM-1 and VM-2 at concentrations of <br /> 3,600, 2,400 and 4,400 pg/l, respectively TPHd was detected in the groundwater samples collected <br /> from wells MW-14 and VM-2 at respective concentrations of 810 and 1,900 pg/l Benzene was <br /> detected in the groundwater samples collected from wells MW-14, VM-1 and VM-2 at concentrations <br /> of 860, 510 and 1,100 pg/l,respectively Toluene, ethylbenzene and total xylenes were also detected in <br /> wells MW-14, VM-1 and VM-2 at concentrations ranging from 2 4 pg/l (VM-1 - toluene) to 240 4g/1 <br /> (VM-2 - total xylenes) FOCs were not detected above their respective laboratory method detection <br />' limits in each of the groundwater samples TPHg, TPHd and benzene concentrations for the First <br /> Quarter - 2004 monitoring event are depicted on Figure 3, Petroleum Hydrocarbons to Groundwater - <br /> March 2004 <br /> CONCLUSIONS <br />' The highest concentrations of dissolved phase petroleum hydrocarbons appear to be limited to the <br /> immediate vicinity of the former UST excavation area (monitoring wells MW-14, VM-1 and VM-2) It <br /> is understood that Caltrans has scheduled remediation activities at the Site The next quarterly <br /> 1 monitoring event is scheduled for the last week of May 2004 <br /> If there are any questions concerning the contents of this report, or if Geocon may be of further <br /> 1 service,please contact the undersigned at your convenience <br /> Sincerely, <br /> GEOCON CONSULTANTS,INC <br />' ,ci <br /> u end, PE, CEG E NO. 46681 �m ebecca L Silva, REA <br /> Ject Manager �P 08/30/07 olect Scientist <br />' RLS JEJ res � O WILL <br /> CALI�-y <br />' (5) Addressee <br /> Attachments Figure 1, Vicinity Map <br /> Figure 2, Groundwater Elevation Map -March 2004 <br />' Figure 3, Petroleum Hydrocarbons in Groundwater-March 2004 <br /> Table 1, Summary of Groundwater Elevation and Analytical Data <br />' Appendix A, Summary of Historical Groundwater Analytical Data <br /> Appendix B, Monitoring Well Sampling Data Sheets <br /> Appendix C, Laboratory Reports and Chain of Custody Records — L <br /> 1 � <br /> 1 <br /> Project No 58475-06-24J -3- Apnl 22,2004 <br />
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