My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
ARCHIVED REPORTS_XR0004597
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
M
>
MAIN
>
290
>
2900 - Site Mitigation Program
>
PR0507835
>
ARCHIVED REPORTS_XR0004597
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/5/2020 12:44:59 PM
Creation date
3/5/2020 12:00:21 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0004597
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.
/
41
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
CreologicalTecluucsl�tc. <br /> Groundwater Monitoring Report Page 2 <br /> 1 ( J Project No. 662.2 <br /> March 24,2005 <br /> extraction/aquifer pumping test was completed on December 6— 10 <br /> p , 2004, A report on these � <br /> -activities was prepared in February 22, 2005. <br /> 1.0 GROUNDWATER MONITORING <br /> 1.1 H dro Bolo <br /> _ Y g g3'of Site <br /> The dominant soil type in the upper 40 feet of the subsurface geologic soils investigated is <br /> sand, fine to course grained, interbedded with thinner units of plastic clay. <br /> x <br /> Two additional monitoring wells (MW-5 & MW-6) and one extraction well (EW-2) were <br /> installed at the site in October 2004. The two monitoring wells are screened from 40 — 45 <br /> feet below grade surface (bgs) or approximately ten feet below historical groundwater table <br /> levels. The new extraction well is screened from 22 - 32 feet bgs and across the historical <br /> water table. All of the site's wells were surveyed on November 19, 2004 in accordance with <br /> i Geotracker requirements. The new and existing wells were divided into two aquifer zones in <br /> which the wells are screened: r <br /> Shallow Aquifer(screened 19—40 feet bgs):MW-1, MW-2, MW-3 and EW-2. a <br /> Deep Aquifer(screened 37 —53 feet bgs): MW-5,MW-6, MW-104 and EW-1. <br /> Based on these aquifer divisions groundwater gradients were calculated for both the shallow ; <br /> and deeper aquifer. On February .17 2005, the water table well shallow fi <br /> P q �'Y . � (shallow) � <br /> elevation averaged 14.48 feet mean sea level (MSL). This equates to approximately 24.5 feet <br /> bgs and represents an increase of 2.16 feet since the November 2004 monitoring event. <br /> Groundwater gradient calculations indicate that the flow in the shallow wells MW-1, MW-2 i <br /> and MW-3 was NVE with a slope of 0.001 ft/ft. The deeper aquifer gradient was N70°E <br /> with a slope of 0.001 ft/ft. <br /> Groundwater elevation and gradient data are summarized in Tables I and 2, Appendix A. <br /> LGradient directions are shown in Figure 2A: Shallow Groundwater Gradient Map, and Figure <br /> E 2B: Deep Groundwater Gradient Map. The historical groundwater gradients are shown in <br /> Figure 3A: Shallow Gradient Rose Diagram., and Figure 3B: Deep Gradient Rose Diagram. <br /> As noted in Figure 3A the site's shallow aquifer displays a predominantly easterly <br /> groundwater direction. Additional monitoring is necessary to determine trends in the deeper <br /> aquifer. <br /> j <br /> 1.2 Groundwater Sampling Procedure <br /> On February 17, 2005, ,Don Light of Del-Tech mobilized to the site to perform the <br /> l <br /> x groundwater monitoring event. Depth to groundwater measurements were completed in all <br /> ' 4 <br /> 1- I <br />
The URL can be used to link to this page
Your browser does not support the video tag.