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ARCHIVED REPORTS_XR0009270
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3500 - Local Oversight Program
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PR0545734
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ARCHIVED REPORTS_XR0009270
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Entry Properties
Last modified
6/5/2020 2:06:08 PM
Creation date
6/5/2020 1:37:05 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0009270
RECORD_ID
PR0545734
PE
3528
FACILITY_ID
FA0010191
FACILITY_NAME
TRACY-PONTIAC-CADILLAC-GMC TRUCK
STREET_NUMBER
2450
STREET_NAME
TOSTE
STREET_TYPE
RD
City
TRACY
Zip
95376
APN
238020-06
CURRENT_STATUS
02
SITE_LOCATION
2450 TOSTE RD
P_DISTRICT
005
QC Status
Approved
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LSauers
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EHD - Public
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18 September 1998 <br /> AGE-NC Project No 96-0254 <br /> Page 3 of 8 <br /> 23 SOIL LOGGING <br /> During drilling, auger returns were monitored for the presence of organic vapor using an organic <br /> vapor meter (OVM) equipped with a photo-ionization detector(PID Thermo Environmental 580A, <br /> 10 0 eV, calibrated to isobutylene) Auger returns were placed on plastic and stored on the western <br /> edge of the site, pending laboratory analysis <br /> I <br /> Duplicate p soli samples were extruded from their sleeve and screened for the presence of organic <br /> vapor using the OVM The OVM readings were recorded on boring logs The soil was then <br /> described in accordance with the Unified Soil Classification System (see Bonng Logs, Appendix <br /> A) <br /> I ' <br /> 24 WELL COMPLETION <br /> Soil bonngs B10 and B14 were completed as dual-screened ground water monitoring wells MW-2 <br /> and MW-1, respectively Soil borings B11, B12, B13 were completed as conventional ground water <br /> C•� monitoring wells MW-3, MW-6 and MW-5, respectively Field numbering of the wells was <br /> determined prior to each wells installation to aide the PHS-EHD in field Inspections However, as <br /> stated in Section 2 0 , proposed ground water monitoring well MW-4 was not installed and therefore <br /> not detailed in the following narrative <br /> The following is a summary of the construction details <br /> • Well MW-1 (Bonng B14) was dual-completed with 0 02-inch slotted screen installed from <br /> depths of 25 to 30 feet bsg(MW-1 A) and from 5 to 15 feet bsg (MW-1 B) A filter pack was <br /> Installed using#3 Lonestar sand from 23 to 30 feet bsg Bentonite chips were used to make <br /> a 8-foot plug between the upper and lower filter sand packs at 15 to 23 feet bsg The upper <br /> filter pack was installed using#2 Lonestar sand from 3 to 15 feet bsg Bentonite chips were <br /> used to make a two-foot transition seal above the upper filter pack The remaining annular <br /> space was backfilled to the surface with portland cement A traffic-rated well box (12-inch <br /> diameter) was Installed over each well, In accordance with County regulations <br /> • Well MW-2 (Bonng B 10) was dual-completed with 0 02-inch slotted screen installed from <br /> depths of 23 to 28 feet bsg(MW-2A) and from 5 to 15 feet bsg (MW-2B) A filter pack was <br /> installed using#3 Lonestar sand from 22 to 28 feet and from 3 to 15 feet bsg Bentonite chips <br /> were used to make a 7-foot plug between the two filter sand packs Bentonite chips were <br /> used to make a two-foot transition seal above the upper filter pack The remaining annular <br /> space was backfilled to the surface with portland cement A traffic-rated well box (12-Inch <br /> • diameter) was Installed over each well, In accordance with County regulations <br /> Advanced GeoEnvironmental Inc <br />
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