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ARCHIVED REPORTS XR0000897
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3500 - Local Oversight Program
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PR0544147
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ARCHIVED REPORTS XR0000897
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Last modified
2/14/2019 2:36:52 PM
Creation date
2/14/2019 1:18:57 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0000897
RECORD_ID
PR0544147
PE
3526
FACILITY_ID
FA0004522
FACILITY_NAME
SKIPS SERVICE STATION
STREET_NUMBER
300
Direction
S
STREET_NAME
CALIFORNIA
STREET_TYPE
ST
City
STOCKTON
Zip
95206
APN
14909501
CURRENT_STATUS
02
SITE_LOCATION
300 S CALIFORNIA ST
P_LOCATION
01
P_DISTRICT
001
QC Status
Approved
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EHD - Public
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{• March 14, 200 1, Foothill Engineering <br /> Oliveras Property <br /> Stockton, CA <br /> The CPT holes were grouted using our support rig. The grouting procedure consists of <br /> using a'PVC tremie pipe. <br /> 3.0 CONE PENETRATION TEST DATA & INTERPRETATION <br /> The cone penetration test data is presented in graphical form in the attached Appendix. <br /> Penetration depths are referenced to existing ground surface. This data includes CPT <br /> logs of measured soil parameters and a computer tabulation of interpreted soil types along <br /> with additional geotechnical parameters and pore pressure dissipation data. <br /> The stratigraphic interpretation is based on relationships between cone bearing (Qc), <br /> sleeve friction (Fs), and penetration pore pressure (Ut). The friction ratio (Rf), which is <br /> sleeve friction divided by cone bearing, is a calculated parameter that is used to infer soil <br /> behavior type. Generally, cohesive soils (clays) have high friction ratios, low cone bearing <br /> and generate large excess pore water pressures. Cohesionless soils (sands) have lower <br /> friction ratios, high cone bearing and generate little in the way of excess pore water <br /> pressures. <br /> The interpretation of soils encountered on this project was carried out using recent <br /> correlations developed by Robertson et al, 1990. It should be noted that it is not always <br /> possible to clearly identify a soil type based on Qc, Fs and Ut. In these situations, <br /> experience and judgment and an assessment of the pore pressure dissipation data should <br /> be used to infer the soil behavior type. The soil classification chart used to interpret soil <br /> types based on Oc and Rf is provided in the Appendix. <br /> We hope the information presented is sufficient for your purposes. If you have any <br /> questions, please do not hesitate to contact our office at (925) 313-5800. <br /> Sincerely, <br /> Tim J. Boyd <br /> Operations Manager— CPT Division <br />
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