My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
ARCHIVED REPORTS_XR0004568
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
M
>
MAIN
>
290
>
2900 - Site Mitigation Program
>
PR0507835
>
ARCHIVED REPORTS_XR0004568
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/5/2020 12:44:31 PM
Creation date
3/5/2020 11:35:56 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0004568
RECORD_ID
PR0507835
PE
2950
FACILITY_ID
FA0007793
FACILITY_NAME
SUPER STOP MARKET
STREET_NUMBER
290
Direction
N
STREET_NAME
MAIN
STREET_TYPE
ST
City
MANTECA
Zip
95336
APN
22309101
CURRENT_STATUS
02
SITE_LOCATION
290 N MAIN ST
P_LOCATION
04
P_DISTRICT
003
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.
/
32
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
' eo(v tta[Technws Inc <br /> � B Page 2 <br /> Groundwater Monitoring Report <br /> Project No 662 2 <br /> .lune 12, 2001 <br /> ' 1.0 GROUNDWATER MONITORING <br /> ' 1.1 Hydrogeology of Site <br /> The dominant soil type in the upper 40 feet of subsurface geologic soils investigated is fine <br /> ' to course grained sand alternating with plastic clays The average groundwater elevation on <br /> February 16, 2001 was approximately IS 16 feet above MSL, which is about 21 feet below <br /> ground surface <br /> ' A groundwater gradient was calculated for the April <br /> 2001 monitoring event and found the <br /> ' groundwater to be flowing N2°W at 0 01S ft/ft Groundwater elevation and gradient data <br /> are summarized in Table 1, Appendix A Gradient direction is shown on Figure 2 Gradient <br /> Map, and Figure 3 Groundwater Gradient Rose Diagram <br /> ' 1.2 Groundwater Sampling Procedure <br /> ' On April 27, 2001, Don Light of Del-Tech mobilized to the site to conduct a groundwater <br /> monitoring of the three existing monitoring wells on site <br /> Before sampling was performed the wells were sounded for depth to water and then a clear <br /> disposable bailer was used to determine if floating product was present The wells were <br /> purged of at least three well volumes of stagnant water using a dedicated Waterra check-ball <br /> assembly and r/2 inch tubing Purging continued until the temperature, conductivity, and pH <br /> of the groundwater stabilized (<10% variation between three readings) indicating that <br /> formation water representative of aquifer conditions was entering the wells These water <br /> ' duality parameters were measured at intervals of each well volume purged <br /> ' Once purging was complete, a water sample was collected from the Waterra tube Care was <br /> taken to minimize sample agitation Once the sample container was filled and capped, the <br /> bottle was inverted, tapped, and checked for headspace bubbles The sample container was <br /> ' identified and labeled with a unique designation, inserted into foam holders and placed in an <br /> ice chest cooled to 4°C for transport to the laboratory <br /> ' All non-disposable sampling equipment was decontaminated using a hot water washer and <br /> detergent before and between uses Disposable gloves were used by the technician to <br /> collect all samples and were changed with each sample collection <br /> ' A chain of custody document, listing all samples collected, accompanied the samples from <br /> field to laboratory, thereby providing a means to track their movement and insure their <br /> ' integrity <br />
The URL can be used to link to this page
Your browser does not support the video tag.