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Environmental Health - Public
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2900 - Site Mitigation Program
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PR0508450
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Last modified
5/29/2019 11:42:43 AM
Creation date
5/29/2019 11:07:59 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
FIELD DOCUMENTS
RECORD_ID
PR0508450
PE
2960
FACILITY_ID
FA0008087
FACILITY_NAME
DDJC-TRACY
STREET_NUMBER
25700
STREET_NAME
CHRISMAN
STREET_TYPE
RD
City
TRACY
Zip
95376
APN
25207002
CURRENT_STATUS
01
SITE_LOCATION
25700 CHRISMAN RD
P_LOCATION
99
P_DISTRICT
005
QC Status
Approved
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EHD - Public
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STATUS REPORT <br /> ABANDONMENT OF WELL AG-3 <br /> The pump was successfully opened from the well on August 11, 1995. Total depth of the <br /> well was measured at 570 feet bgs compared to an original constructed depth of 608 feet <br /> bgs. <br /> Puma Information <br /> Horsepower: 50 <br /> RPM: 1770 <br /> Depth of Pump: 200 feet bgs <br /> Estimated Capacity: 3500 gpm <br /> Pertinent information regarding the well include the following: <br /> Well Condition (as of May 21, 1995) <br /> Condition of Casing : Moderate to Poor <br /> Degree of Encrustation: Mild to Heavy <br /> Perforated Intervals: Locally between 127 and 203 feet bgs, from 372 to 374 feet <br /> bgs, and locally between 495 and 606 feet bgs (see video <br /> summary). <br /> Total Depth: 570 feet bgs <br /> Remainder of casing is filled with sediment and debris <br /> Due to sand wedging which prevented its removal,the column pipe inside of AG-3 was cut <br /> at 125 feet and 155 feet bgs. The upper portion of the column pipe was removed from the <br /> well. A milling tool and drill rig was used to push and break up the bowls below the <br /> column pipe so that the well was opened to a total depth of approximately 570 feet. The <br /> remainder of the well (to a depth of 608 feet) is presumed to be filled with accumulated <br /> sediment and the remainder of the pump bowls and intake pipe. <br /> A video survey was then performed of the interior of the well casing and a summary of the <br /> survey is attached. The video showed that the overall condition of the well is moderate to <br /> poor. Several breaks and holes in the casing are visible, and the well is deformed (i.e., out <br /> of round) locally with the most severe deformation occurring at approximately 174 feet <br /> bgs. Much of the casing is severely encrusted; however, loss of water to the formation <br /> during milling and zones of open perforations indicate that the casing is not closed. <br /> page 1 of 3 <br />
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