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ARCHIVED REPORTS_CONCEPTUAL SITE MODEL
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2900 - Site Mitigation Program
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PR0542464
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ARCHIVED REPORTS_CONCEPTUAL SITE MODEL
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Last modified
2/10/2020 7:44:17 PM
Creation date
2/10/2020 4:43:58 PM
Metadata
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Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
CONCEPTUAL SITE MODEL
RECORD_ID
PR0542464
PE
2960
FACILITY_ID
FA0024404
FACILITY_NAME
CHEVRON FUEL TERMINAL 1001621
STREET_NUMBER
22888
STREET_NAME
KASSON
STREET_TYPE
RD
City
BANTA
Zip
95304
APN
23906015, 16, 17
CURRENT_STATUS
01
SITE_LOCATION
22888 KASSON RD
P_LOCATION
03
QC Status
Approved
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EHD - Public
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1.2.2.2 Groundwater Use <br /> The site is located within the San Joaquin groundwater basin. Beneficial uses of groundwater in the area include <br /> q g <br /> municipal, domestic, irrigation, stock watering, process, and service supply(SECOR, 2005a). <br /> A summary of water wells identified within a one-mile radius of the site is provided as Table 1 and their <br /> approximate locations are depicted on Figure 9. The known screen intervals reported for 13 wells indicate the <br /> wells are set within the B zone of the Upper Tulare Aquifer(i.e., greater than 50 feet bgs). None of the 16 wells <br /> are located downgradient of the site, given the predominantly north-northeastern groundwater flow direction. <br /> Based on a Department of Water Resources file review, no San Joaquin County (County) or City operated <br /> municipal water supply wells (which are typically screened in the Lower Tulare Aquifer) were located within <br /> the general area of the site. <br /> Groundwater within the Upper A, A, and B zones of the Upper Tulare Aquifer in this area is not typically used <br /> for human consumption due to naturally poor water quality (e.g. high boron concentrations and salinity) <br /> (ATSDR, 1998). Groundwater quality of the shallow aquifers in the San Joaquin Valley has been impacted by <br /> sprayed irrigation water in the agricultural areas. Salinity in the shallow groundwater has increased due to <br /> evaporation of sprayed irrigation water and evapotranspiration of soil moisture leaves dissolved salts in the <br /> system. Selenium and boron are also leached out of the soils by irrigation water, raising concentrations in the <br /> shallow groundwater(USGS, 1995) <br /> 1.2.2.3 Extraction Wells Affect on Groundwater Flow <br /> One onsite groundwater extraction well (EW-1), one onsite water supply well (WSW-1), and sixteen offsite <br /> groundwater extraction wells were identified within a one-mile radius of the site, as summarized on Table 1, and <br /> 1 illustrated on Figure 9. Based on historical groundwater monitoring data, pumping from these wells does not <br /> appear to impact onsite groundwater flow. No groundwater injection wells were identified in the vicinity of the <br /> site (EDR, 2002a and EDR,2002b). <br /> 1.2.2.4 Surface Water <br /> The site is located approximately 2-1/2 miles west of the San Joaquin River, within the San Joaquin River Basin. <br /> The CRWQCB-CVR defines the San Joaquin River basin as the area drained by the San Joaquin River, <br /> including all watershed tributaries to the San Joaquin River, and the Delta, south of the Sacramento River, and <br /> south of the American River Watershed. Tom Paine Slough and the Paradise Cut are located approximately one <br /> mile northeast of the site (USGS, 1998). Historical groundwater gradient data suggest that Tom Paine Slough <br /> and the Paradise Cut are gaining surface water bodies. <br /> Three unlined retention ponds are located onsite near the northern site boundary. These ponds are used for <br /> temporary storage of surface water run-off prior to surface discharge. These unlined ponds may also recharge <br /> shallow groundwater in the area(SECOR, 2004a). <br /> BLASLAND,BOUCK &LEE,INC. <br /> 3124106 engineers,scientists,economists 1-3 <br /> J:\D0006\44634_00161022_Conceptual Site Model.doc <br />
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