My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
WORK PLANS
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
G
>
GRANT LINE
>
13170
>
2900 - Site Mitigation Program
>
PR0505432
>
WORK PLANS
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/24/2020 2:57:55 PM
Creation date
1/24/2020 2:40:06 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
WORK PLANS
RECORD_ID
PR0505432
PE
2960
FACILITY_ID
FA0006779
FACILITY_NAME
DIVIDEND PROPERTY
STREET_NUMBER
13170
Direction
W
STREET_NAME
GRANT LINE
STREET_TYPE
RD
City
TRACY
Zip
95376
CURRENT_STATUS
02
SITE_LOCATION
13170 W GRANT LINE RD
P_LOCATION
99
P_DISTRICT
005
QC Status
Approved
Scanner
SJGOV\sballwahn
Tags
EHD - Public
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
43
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
I <br /> i� <br /> GEOMATRIX <br /> BACKGROUND <br /> The area of the Dividend property addressed b this plan(the"project area")is located adjacent to <br /> P p rtY Y <br /> the Southern Pacific Railroad right-of-way(SP ROW). Crude oil pipelines, operated by Chevron <br /> and Texaco from approximately the early 1900s to the 1950s,ran parallel to the southern edge of <br /> the Dividend property along West Byron Road(Figure 2). The pipelines were buried at a depth of <br /> approximately 3 feet below ground surface. <br /> L <br /> Since 1989, soil and groundwater investigations have been conducted at the Dividend property and <br /> adjoining SP ROW on behalf of the Dividend Development Company, Texaco, and Chevron. The <br /> investigations have been reviewed by the PHS-EHD and the RWQCB. The results of these <br /> Linvestigations indicate that petroleum hydrocarbons characterized as degraded crude oil or Bunker <br /> C oil are present in subsurface soil along the southern edge of the property that fronts the SP ROW <br /> Land within the SP ROW, apparently the result of releases from the pipelines. The approximate <br /> locations of known crude/Bunker C oil affected soil on the Dividend property are shown on <br /> Figure 2. <br /> The petroleum hydrocarbons have been reported to be present in soil at concentrations up to <br /> 24,000 parts per million (ppm)between the depths of 5 and 16 feet within the SP ROW, and up <br /> to 7500 ppm on the Dividend property. This vertical distribution is likely the result of a <br /> fluctuating water table. The lateral distribution of petroleum hydrocarbons in soil is limited, and <br /> does not appear to extend more than 100 feet northeast of the SP ROW beneath the Dividend <br /> i <br /> property. <br /> The subsurface soil at the project area is predominantly silt and clay, with isolated sandy lenses, <br /> to a depth of at least 20 feet. The water table is about 7 feet below ground surface. Based on the <br /> groundwater investigations performed to date, shallow groundwater beneath the site has not been <br /> significantly affected by the degraded crude/Bunker C oil. In their 11 October 1996 letter <br /> (attached), the RWQCB has determined that the degraded crude oil is not a threat to groundwater <br /> quality and no further investigation, remedial or removal action, or monitoring is required. It <br /> C2677\SOILPLAN.DOC 2 <br />
The URL can be used to link to this page
Your browser does not support the video tag.