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ARCHIVED REPORTS_XR0012080
EnvironmentalHealth
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2900 - Site Mitigation Program
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PR0541653
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ARCHIVED REPORTS_XR0012080
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Entry Properties
Last modified
10/10/2020 11:08:06 PM
Creation date
7/9/2020 8:39:24 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0012080
RECORD_ID
PR0541653
PE
2965
FACILITY_ID
FA0023871
FACILITY_NAME
TOP FILLING STATION
STREET_NUMBER
101
Direction
S
STREET_NAME
WILSON
STREET_TYPE
WAY
City
STOCKTON
Zip
95205
APN
15125307
CURRENT_STATUS
01
SITE_LOCATION
101 S WILSON WAY
P_LOCATION
01
QC Status
Approved
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EHD - Public
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I <br />' 21 May 2003 <br /> AGE-NC Project No 95-0130 <br />' Page 2 of 15 <br />' 2 2 REGIONAL GEOLOGY AND HYDROGEOLOGY <br /> The property is situated within the Great Valley Geomorphic Province of California, a large, <br />' elongate, northwest trending, asymmetric structural trough The Great Valley Province has been <br /> filled with thick sequences of sediment ranging in age from Jurassic to Recent,creating a nearly flat- <br /> lying alluvial plain,extending from the Tehachapi Mountains in the south to the Klamath Mountains <br /> I in the north The western and eastern boundaries of this province are comprised of the California <br /> Coast Range and the Sierra Nevada, respectively Rocks composing the basement complex of the <br /> province have not been completely defined but are believed to be metamorphic and igneous in origin <br />' The northern and southern portions of the Great Valley Province have been designated the <br /> Sacramento and San Joaquin Valleys, respectively <br /> Based on the General Soil Map from the San Joaquin County Soil Survey,published by the United <br /> States Department of Agriculture Soil Conservation Service in 1992, the site area is within the <br /> Jackson-Hallenbeck-Stockton (JHS) association The JHS soils are located within basins, and <br /> Igenerally consist of moderate to poorly drained fine textured soils The soils are generally derived <br /> from both marine and non-marine sediment, and are generally formed in alluvium derived from <br /> • mixed rock sources <br /> The Modesto,Riverbank, Turlock Lake Formations and overlying recent alluvium are the principal <br /> I source of domestic ground water in the 13,500 square-mile San Joaquin Valley Ground Water Basin <br /> (Basin 5-22) This basin is drained primarily by the San Joaquin River The nearest surface water <br /> feature in the vicinity of the property is the Stockton Deep Water Channel, located approximately <br /> 3,000 feet west of the property <br /> The estimated depth to ground water at the site is approximately 40 feet below surface grade (bsg) <br /> I based on information from Lines of Equal Depth of Water Wells Sprang 1999, published by the San <br /> Joaquin County Flood Control District and Water Conservation District(SJCFCD) Based onreview <br /> of a regional ground water elevation map published by the SJCFCD, the prevailing ground water <br /> flow direction in central Stockton is generally toward the northeast, although flow directions may <br /> be both locally and seasonably variable <br /> I Based on data collected during the March 2003 ground water monitoring event,first observed ground <br /> water was approximately 42 feet bsg, the ground water flow direction was inferred to be towards the <br /> northeast at a calculated gradient of 0 004 Ground water flow direction at the site was inferred <br /> towards the northeast from twenty-one consecutive quarterly ground water monitoring events <br /> between September 1997 and March 2003 <br /> I <br /> Advanced GeoEnvironmental,Inc <br />
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