My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
ARCHIVED REPORTS XR0001014
EnvironmentalHealth
>
EHD Program Facility Records by Street Name
>
C
>
CHARTER
>
1245
>
3500 - Local Oversight Program
>
PR0544236
>
ARCHIVED REPORTS XR0001014
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/6/2019 7:57:30 PM
Creation date
3/6/2019 4:10:25 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0001014
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.
/
72
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
Geo1*017ecl41cs14c Page 2 <br /> I"Quarter 2002 Groundwater Monitoring Report <br /> Project No 507 2 <br /> June 17,2002 <br /> t1.0 GROUNDWATER MONITORING <br />' 1.1 Hydrogeology of Site <br />' The geology of the site is predominately clays and sandy clays with lesser amounts of silts <br /> and sands The average groundwater elevation was 9 35 feet below ms] on February 26, <br /> 2002 This represents an increase of 1 31 feet since the December 20, 2002, monitonng <br />' event A groundwater gradient was calculated for the event and found to be flowing N78°E <br /> at 0 002 ft/ft <br />' The gradient direction for the February 26 monitoring event is shown in Figure 2, and the <br /> historical groundwater directions and gradients are shown in Figure 3, Groundwater <br /> Gradient Rose Diagram The groundwater elevation data are summarized in Table 1, <br /> Appendix A Table 5 provides a summary of monitoring well construction <br /> The groundwater gradient is relatively flat and the direction of groundwater has varied <br /> ' during the course of the investigation As evident in Figure 3, groundwater had a strong <br /> bifurcated flow regime, trending predominantly to the southwest or north-northeast at <br /> approximately 180-degree direction reversal With the installation of wells MW-7 and <br /> MW-10 in May 2001, the direction had been to the east-northeast in four of five events <br /> The site is quite close to the San Joaquin River and tidal fluctuations may contribute to <br /> ' some of the observed changes in groundwater direction <br /> Vertical Groundwater Gradients <br /> Under vertical groundwater flow conditions, the water level in a monitoring well is a <br /> function of the length of the well screen and its depth or vertical position in the aquifer As <br /> with horizontal flow conditions, the diameter of the well or piezometer is immaterial <br /> The following procedure is used to calculate vertical groundwater gradient <br /> • Determine the vertical distance between the two measuring devices by the distance from <br /> ' the mid-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- <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 /> Gradients Slope and Bearing, and Table 2 shows the calculated vertical gradients The <br /> information used in the calculations is shown below <br />
The URL can be used to link to this page
Your browser does not support the video tag.