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ARCHIVED REPORTS XR0011458
EnvironmentalHealth
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DURHAM FERRY
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1600
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3500 - Local Oversight Program
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PR0544624
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ARCHIVED REPORTS XR0011458
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Entry Properties
Last modified
7/3/2019 7:20:50 PM
Creation date
7/3/2019 4:09:29 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0011458
RECORD_ID
PR0544624
PE
3526
FACILITY_ID
FA0005206
FACILITY_NAME
GEORGES SERVICE
STREET_NUMBER
1600
Direction
W
STREET_NAME
DURHAM FERRY
STREET_TYPE
RD
City
TRACY
Zip
95376
APN
25510004
CURRENT_STATUS
02
SITE_LOCATION
1600 W DURHAM FERRY RD
P_LOCATION
99
P_DISTRICT
005
QC Status
Approved
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EHD - Public
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Geological reckdPcsW Page 3 <br /> Groundwater Monitoring Report <br /> Project No 425 2 <br /> • April 27,2005 <br /> Sacramento River delta system that overlay continental rocks and deposits derived from <br /> erosion of the Sierra Nevada Mountain Range located approximately 50 miles northeast of <br /> ' Modesto <br /> The southwest tilting Sierra Nevada fault block underlies the northern San Joaquin Valley <br />' area Overlying the consolidated rocks are unconsolidated sediments The lower consolidated <br /> batholithic and metamorphic rocks are poorly transmissive, however the overlying <br /> sedimentary layers are often quite permeable These unconsolidated layers include <br /> ' Pliocene/Pleistocene age continental deposits, Pleistocene age iacustrine and marsh deposits, <br /> and Holocene older and younger alluviums and flood-basin deposits <br /> ' 1.2 Regional Stratigraphy <br /> ' The following information comes from the United States Department of Agriculture — Soil <br /> Conservation Service (USDA) Soil Survey of San Joaquin County, California (McElhiney, <br /> M A , 1992), indicates the area surrounding the site is predominately made up of one general <br /> soil type <br /> Capay— Stomar— Zacharias A gentle 0 to 2 percent slope, moderately well drained and <br /> well drained, moderately fine textured, gravelly moderately fine textured, and fine <br /> N textured soils that are very deep, in interfan basins and on alluvial fans and stream <br /> terraces <br /> • The USDA Sail Survey of San Joaquin County, California (McElhiney, M A , 1992), <br /> states the soils beneath and adjacent to ST are categorized as <br /> o Capay clay Wet 0 to 2 percent slope, very deep, moderately well drained, nearly <br /> level soil is in interfan basins It formed in alluvium derived from mixed rock <br /> ' sources Typically the surface layer is grayish brown and dark grayish brown clay <br /> about 20 inches thick and the next 60-inches is typically pale brown silty clay loam <br /> and clay loam Slow permeability, high shrink-swell potential, low strength, and <br /> high water table <br /> ' 1.3 Lithology and Soil Characteristics <br /> The following section discusses the subjective field observations and geology documented <br /> during this investigation based on the interpretations of the field geologist Cross sectional <br /> views are included in GTIs Additional Site Characterization and I" Quarter 2004 <br /> Groundwater Monitoring Report dated March 22, 2004 <br /> In Summar <br /> • The lithology of the site is basically, alternating layers of clay-sand mixtures and sand- <br /> gravel mixtures <br /> ' • The lithology between the surface and 20-feet bgs is predominately clays and sands <br /> • The lithology between 20 and 40-feet bgs is predominately sands and gravels <br />
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