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ARCHIVED REPORTS_XR0011716
Environmental Health - Public
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EHD Program Facility Records by Street Name
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JAHANT
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2900 - Site Mitigation Program
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PR0545317
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ARCHIVED REPORTS_XR0011716
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Last modified
2/11/2020 10:30:00 PM
Creation date
2/11/2020 9:32:21 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0011716
RECORD_ID
PR0545317
PE
2952
FACILITY_ID
FA0005251
FACILITY_NAME
M L GRENZ
STREET_NUMBER
6540
Direction
E
STREET_NAME
JAHANT
STREET_TYPE
RD
City
ACAMPO
Zip
95220
APN
00526003
CURRENT_STATUS
02
SITE_LOCATION
6540 E JAHANT RD
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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SJGOV\sballwahn
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EHD - Public
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i <br /> the west to allow the backhoe to reach deeper; the north side of <br /> the excavation was extended about 3 ' where the metal shed had <br /> been located. Mr. Hunter arrived on location about 2: 30PM & <br /> observed M. Thorpe removing soil from the east end of the pit <br /> with the backhoe bucket. The spoil was placed on the ground near <br /> the site of the removed shed & P. Thorpe was picking it up with a <br /> front loader and placing it on plastic to the west and north <br /> sides of the excavation. Some weak petroleum odors were noted, <br /> but no visible staining or free product was observed. Sediments <br /> consisted primarily of loose to firm, very fine-to medium grained <br /> white to tan sands with occasional streaks of clay and some dark <br /> grayish-green nodules of cherty claystone. The petroleum odor <br /> decreased rapidly as spoil removal continued , and at <br /> approximately 32-33 feet all evidence of contamination ceased. <br /> Excavation continued to approximately 35 ' bgl ; sediments <br /> consisted of fine-to coarse grained, loose, clean sands ranging <br /> in color from gray-white to tan. There was no odor, staining , or <br /> evidence of free product. After discussion with Mr. Knoll of the <br /> EHD, it was agreed to take four- (4) samples from the sides of the <br /> excavation at about 20 ' bgl , and two (2) from the bottom at 35 ' <br /> bgl . Due to the depth of the hole, and the loose nature of the <br /> . sediments, it was not considered safe to eater the hole and take <br /> hand-driven samples. The backhoe bucket was used to collect the <br /> sample as directed by Mr. Hunter & Mr. Knoll . A sample was then <br /> taken by Mr. Hunter by driving a properly sterilized brass tuba <br /> into the spoil , promptly sealing it with teflon tape and plastic <br /> end caps, and wrapping securely with duct tape. Each sample was <br /> then labeled and placed on ice pending transport to the lab. The <br /> final configuration of the excavation S, sample locations are <br /> shown on Plates IX, X, & XI. The properly refrigerated samples <br /> were delivered to the laboratory by Mr. Hunter under proper chain <br /> of custody. Instructions were given to test for DTEX & TPM-G. <br /> The results of that analysis, summarized on Table VI , revealed <br /> that all samples were below detection levels for all tested <br /> substances. <br /> SOIL REMEDIATION PROPOSAL: Treatek Inc. has made a proposal for <br /> remediating the approximately 600 cubic yards of spoil that <br /> remains on the property. It has been moved to a site east of the <br /> house and barn and as being prepared for treatment. A copy of <br /> that proposal is attached to this report as Exhibit K. A workplan <br /> for implementing the proposal is being prepared for submittal to <br /> the County EHD. <br /> SUMMARY & CONCLUSIONS: As a result of the above investigative <br /> • work , which involved extensive spoil removal and sampling , all <br /> contamination has been removed from the site of the former UST. <br /> 6 <br />
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