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3 On May 2 and 3, 2000 the soil borings for both MW#5 and MW#6 were made as described in the Work Plan of 3/17/2000.Monitoring wells were installed in both of these sail bores. The Work Plan of 3/17/2000 also included a soil bore and monitoring well (MW#4)to be installed in the sidewalk on the north side of Lafayette Street. This soil bore was not completed as planned. An unknown underground storage tank was encountered in the direct path of the soil bore. As a result of this encounter, the soil bore was abandoned and the local agencies were notified. A recap of the results of sample analysis for MW#5 and MW46 are attached. CPT#3 was installed on June 13,2000 in the Caltrans right of way.This CPT is northeast of the site, and the data gathered is attached. All monitoring wells have been sampled quarterly, and a recap of the findings is attached. A Work Plan to expand the horizontal definition of the contamination plume was approved in December of 2000.This Work Plan called for the installation of three new CPT's within the Caltrans RIW to the north of the project site. These CPT's were completed on March 8, 2001 and soil and water samples were extracted to a depth'of 125 feet. Also, included in the Work Plan of December 2000 was the installation and testing of four new monitoring wells to be placed on the project site or the adjacent property. These monitoring wells were completed on April 11,2001.MW#9 was not installed at the time of this first quarter sampling event. Procedure On March 30, 2001 Del Tech Geotechnical Support Services secured water samples from the monitoring wells on the above stated property. The work was supervised by Foothill Engineering. All monitoring wells were in good condition and samples were taken using. the standard recommended procedures.All samples were extracted using the tube with check valve pump system. Purge volumes and the physical properties of the ground water arc attached in the Del-Tech Field Report. The replacement and original monitoring wells were sampled for analysis and the original monitoring wells were used to establish groundwater elevation and gradient. All samples were transported under chain of custody to Sherwood Labs of Hilmar, California for analysis by EPA methods 602 and 503018015. All water sample analysis and groundwater elevations are summarized in the attached tabular recap sheet. Original data sheets from the laboratories are attached. Findings The groundwater elevation in all of the wells has raised +/- 0.6 feet from the last sampling date (December 22,2000). MW-1 continues to have the highest concentration of gasoline contamination (TPHg)at 115,000 ppb which is a drop from 127,000 ppb on 12/22/00. All monitoring wells yielded lower concentrations of TPHg for this event than were present at the December 22, 2000 sampling event. The groundwater hydraulic gradient was calculated at S=0.002 with the down slope in the Northeast direction (see a site map attached). 2