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ARCHIVED REPORTS XR0011067
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PR0544222
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ARCHIVED REPORTS XR0011067
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Entry Properties
Last modified
3/5/2019 4:29:37 PM
Creation date
3/5/2019 1:48:44 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0011067
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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Geologccal recluucs lKc Page 2 <br /> Groundwater Monitoring Report <br /> Project No 724 2 <br /> Novembei 17, 2003 <br /> ' groundwater gradient is predominantly upward, except in well pair MW-41104, which is <br /> ' always downward <br /> ' 1.0 GROUNDWATER MONITORING <br /> 1.1 Hydrogeology of Site <br /> ' Site-specific groundwater gradients and bearings for water table and intermediate wells <br /> were calculated utilizing computer generated contours <br /> On September 26, 2003, the gradient in water table wells MW-4, MW-5, MW-6 and MW-7 <br /> was flowing S66°E at 0 015 Haft Figure 2 illustrates the water table groundwater gradient <br /> ' map for the monitoring event The average elevation of groundwater under the site was โ <br /> 22 80 feet MSL (below mean sea level) or approximately 37 feet below grade surface This <br /> elevation represents a decrease ofโ1 37 feet since the June 2003 monitoring event The <br />' water level has risen significantly at the site since October of 1992 when groundwater was โ <br /> 39 feet MSL <br /> Figure 3 is an intermediate well groundwater gradient map for the September 2003 event <br /> In the intermediate wells (water above the screened interval of the well) MW-1 through <br />' MW-3, MW-106 and MW-107, groundwater flowed S84°E at a gradient of 0 0014 ft/ft <br /> Deep well MW-104 is not screened across similar elevations so a deeper gradient was not <br /> calculated for the event (see Table 6 for well construction details) <br />' Table 1 in Appendix A contains the shallow groundwater elevations and gradients for all <br /> events since the start of this project in October 1992 Table 2 in Appendix A contains the <br /> historical mteimediatc/deep groundwater elevations <br /> The rose diagram included in Figure 4A shows that the water table groundwater gradients at <br />' this site are consistently towards the east In Figure 4A, arrows labeled 22 and above were <br /> measurements made after November 2000 Since additional wells were installed in <br /> November 2000, the groundwater direction has had a more southerly component suggesting <br /> that the earlier measurements were biased due to the spatial orientation of fewer wells The <br /> rose diagram included in Figure 4B shows that the intermediate aquifer gradients at this site <br /> range from northeast to southeast The gradients were consistently to the east for the last six <br />' events <br />' Vertical Groundwater Gradients <br /> Under vertical groundwater flow conditions, the water level in a monitoring well is a <br /> . function of the length of the well screen and its depth or vertical position in the aquifer As <br />' with horizontal flow conditions, the diameter of the well or piezometer is immaterial <br />
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