ARCHIVED REPORTS_XR0002362 - Laserfiche WebLink

Home Browse Search

II2 0GEOL E t . A GROUNDWATER CONSULTANCY I PO Box 2165 ■ Livermore, Cahfomia 94551 ■ (925)373-9211 v F , /0 41, Local Oversight Program October 01, 2001 San Joaquin County Department of Health Services P O Box 2009 Stockton, CA 95201 RE Third Quarter, 2001 Groundwater Monitoring Report - Underground Storage Case Former Cheaper) #37, 15 Grant Line Road, Tracy, San Joaquin County Dear Local Oversight Program; This Third Quarter, 2001 Groundwater Monitoring Report is submitted by H20GEOL on behalf of The Customer Company for the former Cheaper) Store #37, 15 Grant Lane Road in Tracy, San Joaquin County, California. The site location is shown on Figure 1 and is now More for Less #37. The Third Quarter, 2001 groundwater monitoring event occurred on August 18, 2001 r 10 POTENTIOMETRIC SURFACE Depth to water in each monitoring well was measured to +/- 0.01 feet using a Sohnst Model water level meter between 11 22 and 1128 on August 18, 2001 The depths to water were converted to potentiometric surface elevation by subtracting the measured depths to water from the casing top elevations derived from the well survey performed in 1995 by Benchmark Consultants The depth to water, casing top elevations, and potentiometne surface elevations are presented in Table 1 All available previous water level measurements are sumnnarized an Table C1 in Attachment C Figure 2 as a map showing the approximate potentiometnc surface for the monitoring wells at the site on August 18, 2001 Table 2 lists the slope(gradient) and direction of gradient of the potentaometric surface for each of the triangles with a well at each apex The average gradient of the potentaometnc surface was 0 0029 feet per foot. The average gradient direction was oriented N 12 5°E. All available previous potentiometnc surface slope (gradient) and direction of gradient are summarized in Table C2 m Attachment C.