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ARCHIVED REPORTS XR0011063
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PR0544222
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ARCHIVED REPORTS XR0011063
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Entry Properties
Last modified
3/5/2019 4:07:54 PM
Creation date
3/5/2019 1:48:06 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0011063
RECORD_ID
PR0544222
PE
3528
FACILITY_ID
FA0005976
FACILITY_NAME
TIRE & WHEEL MASTERS
STREET_NUMBER
814
Direction
E
STREET_NAME
CHARTER
STREET_TYPE
WAY
City
STOCKTON
Zip
95206
APN
16718101
CURRENT_STATUS
02
SITE_LOCATION
814 E CHARTER WAY
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
Scanner
WNg
Tags
EHD - Public
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' � t <br /> i logica I re,C`ntCS In C', <br /> ' 1101 7"Street <br /> Modesto,California 95354 <br /> (209)522-4119/Fax(209)522-4227 <br /> 1 <br /> ' REPORT <br /> Groundwater Monitoring <br /> 4" Quarter 2003 <br /> ' Morita Brothers <br /> 814 E. Charter Way <br /> ' Stockton, CA <br /> Project No 724 2 <br />' February 3, 2004 <br /> EXECUTIVE SUMMARY <br /> This report summarizes the 4"' Quarter 2003 round of groundwater monitoring and testing <br />' that occurred on November 28, 2003 The laboratory analyses indicate that four of the ten <br /> monitoring wells on this site remain impacted by gasoline range petroleum hydrocarbons <br /> The groundwater contamination plume appears to be migrating off site as evident from <br />' detection in well MW-106 The contamination is present in well MW-106 at a depth of <br /> approximately 17 feet below the water table <br />' The average groundwater elevation in the water table wells at the site was —23 12 feet mean <br /> sea level (msl) and this corresponds to approximately 37 feet below ground surface (bgs) <br />' This project's historic low groundwater levels in the early 1990's were 20 feet lower than <br /> the current level This is part of the problem with trapped residual hydrocarbons below <br /> groundwater that act as a continuing source of groundwater contamination <br />' Groundwater gradient calculations demonstrate that groundwater flow in the water table <br /> wells MW-4 through MW-6 was S73°E at 0 018 ft/ft for the November 28, 2003 event The <br />' rose diagram shown in Figure 4A indicates that the water table groundwater gradients at this <br /> site consistently trend east to southeast A rose diagram was also constructed for the <br /> intermediate aquifer monitored by wells MW-1, MW-2, MW-3, MW-106 and MW-107 <br />' Figure 4B illustrates the historical intermediate aquifer gradients and the November 2003 <br /> gradient that was calculated to be S80°E at 0 002 ft/ft The vertical flow component of <br /> 1 <br />
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