My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
ARCHIVED REPORTS XR0001043
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
C
>
CHARTER
>
1245
>
3500 - Local Oversight Program
>
PR0544236
>
ARCHIVED REPORTS XR0001043
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/6/2019 8:48:53 PM
Creation date
3/6/2019 4:18:17 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0001043
RECORD_ID
PR0544236
PE
3526
FACILITY_ID
FA0024238
FACILITY_NAME
JM EQUIPMENT COMPANY
STREET_NUMBER
1245
Direction
W
STREET_NAME
CHARTER
STREET_TYPE
WAY
City
STOCKTON
Zip
95206
APN
16323034
CURRENT_STATUS
02
SITE_LOCATION
1245 W CHARTER WAY
P_LOCATION
01
QC Status
Approved
Scanner
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.
/
61
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
� Page 2 <br /> 2°d Quarter 2004 Groundwater Monitonng Report <br /> Project No 507 2 <br /> August 30,2004 <br /> ' 1.0 GROUNDWATER MONITORING <br /> 1.1 Hydrogeology of Site <br /> ' The geology of the site is predominately clays and sandy clays with lesser amounts of inter <br /> bedded silts and sands The average groundwater elevation was —10 98 feet below msl on <br /> ' June 4, 2004, which corresponds to approximately 16 feet below grade surface (bgs) This <br /> elevation represents a decrease of 0 88 feet since the March 19, 2004 monitoring event A <br /> groundwater gradient was calculated for the event and found to be flowing N55°E at 0 004 <br /> ' ft/ft This site consistently exhibits a flat groundwater gradient <br /> The gradient direction for the June monitoring event is shown in Figure 2, and the historical <br /> groundwater directions and gradients are shown in Figure 3, Groundwater Gradient Rose <br /> Diagram The groundwater elevation data are summarized in Table 1, Appendix A Table 5 <br /> provides a summary of monitoring well construction <br /> ' <br /> The groundwater gradient is re <br /> latively flat and the direction of groundwater flow has varied <br /> during the course of the investigation As evident in Figure 3,groundwater exhibited a strong <br /> bifurcated flow regime in 2000, trending predominantly to the southwest or north-northeast at <br /> approximately 180-degree direction reversal Since the installation of wells MW-7 and MW- <br /> 10 in May 2001, the direction has been predonunantly to the northeast The site is quite close <br /> to the San Joaquin River and tidal fluctuations may contribute to some of the observed <br /> changes in groundwater direction <br />' Vertical Groundwater Gradients <br /> Under vertical groundwater flow conditions, the water level in a monitoring well is a function <br />' of the length of the well screen and its depth or vertical position in the aquifer As with <br /> horizontal flow conditions, the diameter of the well or piezometer is immaterial <br />' The following procedure is used to calculate vertical groundwater gradient <br /> e Determine the vertical distance between the two measuring devices by the distance from <br /> the crud-point between the top and bottom seal of the deep well (MW-109) and the mid- <br /> point between the groundwater elevation and the bottom seal in the shallow well (MW-9) <br /> • Measure the head in both wells used in the calculations <br /> ® If the lateral distance between the well pair is greater than a few feet, then calculations <br />' must be made to correct the down-gradient piezometric head to account for the sloping <br /> water table between the wells The calculation considers the slope of the water table and <br />' the distance in a down-gradient direction between the two wells used in the calculations <br /> Figure 2 shows the location of the well cluster used for calculating the vertical groundwater <br /> gradient in this report, MW-9 and MW-109 Table 1 shows Summary of Water Level and <br />
The URL can be used to link to this page
Your browser does not support the video tag.