My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
ARCHIVED REPORTS_XR0007119
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
E
>
88 (STATE ROUTE 88)
>
14000
>
3500 - Local Oversight Program
>
PR0544811
>
ARCHIVED REPORTS_XR0007119
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
11/20/2024 9:21:18 AM
Creation date
9/5/2019 1:35:32 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0007119
RECORD_ID
PR0544811
PE
3528
FACILITY_ID
FA0000091
FACILITY_NAME
Colonial Energy CE 40138 (DBA Power Mart)
STREET_NUMBER
14000
Direction
E
STREET_NAME
STATE ROUTE 88
City
LOCKEFORD
Zip
95237
CURRENT_STATUS
02
SITE_LOCATION
14000 E HWY 88
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
Scanner
SJGOV\wng
Tags
EHD - Public
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
42
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
Site History <br /> 14000 Highway 88, Lo&eford,CA <br /> Time Oil Property No 04-049 <br /> 2 Soil samples would be collected from each boring at 5-foot intervals and submitted for analyses <br /> based on visual observation and field instrumentation readings A minimum of three samples would <br /> be submitted from each boring <br /> 3 In the event that groundwater is encountered, the boring to be placed near W-8 would be installed as <br /> a 2-inch diameter groundwater monitoring well If needed, up to three additional groundwater <br /> monitoring wells might be installed to assist In determining the extent of impacted groundwater All <br /> wells would be properly developed and purged prior to the collection of groundwater samples <br /> A diti nal Environmental lrtue5#Igati�n -December 1994 <br /> While conducting field activities during the weeks of December 20 and 27, 1994, hydrocarbon-Impacted <br /> groundwater was encountered while attempting to define the vertical extent of soil contamination Therefore, <br /> four groundwater monitoring wells (MW-1 through MW-4) were Installed and one sod boring (SB-11) was <br /> advanced in an attempt to define the extent of contamination in both media <br /> As in previous site activities, sods encountered during drilling consisted of fine silty sands to approximately 15 <br /> feet below ground surface (bgs), this strata was underlain by fine to coarse sands to approximately 30 feet <br /> bgs Clayey silt was generally encountered at 30 feet to 35 feet while fine to coarse sands and gravelly <br /> sands were encountered to 70 feet bgs Silty clay with sandy and gravelly stringers was encountered from <br /> 70 feet bgs to the extent of each boring Groundwater was first encountered at depth 85 feet bgs <br />• <br /> MW-11 was installed to the northeast of the currently operating pump Islands, MW-2 was installed to the east <br /> of MW-1, MW-3 was installed to the southeast of the former tank bed, and MW-4 was Installed to the <br /> southwest of the former tank bed (presumably downgradient) Each of the wells was constructed of 2-Inch <br /> diameter PVC and screened from a depth of 65 feet bgs to 100 feet bgs Sod boring SB-11, placed to the <br /> west of the former tank bed, could only be advanced to a depth of 78 feet bgs due to difficult drilling <br /> conditions <br /> Because the extent of shallow sod contamination was defined during earlier investigative activities, soil <br /> samples were collected only from depths of 25 feet and greater Based on field instrumentation readings, <br /> four to five soil samples from each drilling location were submitted to a laboratory and analyzed for total <br /> petroleum hydrocarbons as gasoline (TPH) and also for benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX) Gasoline was found in the samples collected from MW-1 at 35 feet(3 4 ppm), 45 feet(680 ppm), 83 <br /> feet (3 2 ppm), and 100 feet (1 6 ppm), varying concentrations of BTEX were also found In these samples <br /> Trace concentrations of benzene, ethylbenzene, and xylenes (none exceeding 0 01 ppm) were also found in <br /> the samples collected from MW-2 at 45 feet, 55 feet, and 60 feet, and in the sample collected from MW-5 at <br /> 71 feet Hydrocarbons were not identified In any of the remaining samples <br /> On January 19, 1995, the groundwater monitoring wells were purged and sampled Prior to purging, <br /> measurements were collected from each well to evaluate groundwater elevation, flow direction, and gradient <br /> During field activities, groundwater with a southeasterly flow and a hydraulic gradient of 0 13 ft/ft was <br /> encountered at 75 96 feet bgs to 86 80 feet bgs <br /> Hydrocarbons were found In groundwater samples collected from each of the monitoring wells The sample <br /> collected from MW-1 contained 5,200 ppb TPH, 200 ppb benzene, 1,100 ppb toluene, 160 ppb ethylbenzene, <br /> and 620 ppb xylenes The sample collected from MW-2 was found to contain 460 ppb TPH, 30 ppb <br />. benzene, 48 ppb toluene, 5 ppb ethylbenzene, and 30 ppb xylenes Analysis of the sample collected from <br /> 4 <br />
The URL can be used to link to this page
Your browser does not support the video tag.