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ARCHIVED REPORTS XR0001671
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2900 - Site Mitigation Program
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PR0522479
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ARCHIVED REPORTS XR0001671
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Last modified
5/17/2019 2:48:32 PM
Creation date
5/17/2019 2:20:45 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0001671
RECORD_ID
PR0522479
PE
2957
FACILITY_ID
FA0015299
FACILITY_NAME
GEWEKE LAND DEVELOPMENT & MARKETING
STREET_NUMBER
16
Direction
S
STREET_NAME
CHEROKEE
STREET_TYPE
LN
City
LODI
Zip
95240
APN
04323013
CURRENT_STATUS
01
SITE_LOCATION
16 S CHEROKEE LN
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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Workplan for Completion of an Aquifer Test <br /> 16 South Cherokee Lane, Lodi, California <br /> Once extraction of groundwater from Well EW-1 is terminated, measurements of drawdown <br /> in the wells will continue in order to provide recovery data Residual-drawdown graphs will <br /> I be prepared from the recovery data The analysis of residual-drawdown graphs will also be <br /> used to estimate the aquifer transmissivity <br /> 2.3 Slug Tests <br /> As it may/may not be possible to affect drawdown in Wells MW-11 through MW-13 while <br /> pumping from Well EW-1, we propose to conduct slug tests on these wells in order to <br /> estimate aquifer characteristics down-gradient of the site (Figure 2) <br /> The slug tests will be performed by rapidly inserting or withdrawing an inert solid slug from <br /> each well to be tested During the slug test, recovery of the water table will be measured <br /> by using a datalogger equipped with a pressure transducer The pressure transducer will be <br /> placed near the bottom of the well where it measures the pressure exerted by the overlying <br /> water column (head) As the water table recovers from the withdrawal of slug, the pressure <br /> transducer and datalogger record the change in hundredths of a foot Once the slug test has <br /> been completed, the data stored in the datalogger is downloaded to a personal computer <br /> for analysis <br /> We propose to analyze the slug test data using a modified version of the Theim Equation <br /> presented as Model 18 of Dawson and Istock (1991) This model applies to slug tests <br /> performed on unconfined aquifers when the well does not penetrate the full thickness of the <br /> aquifer <br /> 3.4 PROCEDURES <br /> The following section details procedures that will be implemented during the aquifer test <br /> 1) The work proposed will be conducted under the direct supervision of a California <br /> Registered Geologist <br /> 2) Prior to commencement of any work at the site, GeoAudit shall notify the <br /> CVRWQCB and the San Joaquin Public Health Services - Environmental Health <br /> Division (PHS/EHD) a minimum of 48 hours in advance, the nature of such work <br /> and time and date it will be performed <br /> 3) A site health and safety plan (SHSP) prepared in accordance with the Occupational <br /> Safety and Health Guidance Manual for Hazardous Waste Site Activities is attached <br /> (Prepared by National Institute for Occupational Safety and Health, Occupational <br /> Safety and Health Administration, U S Coast Guard and US Environmental <br /> Geological Audit Services Ine <br /> CMSJGeweke"I 3 <br />
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