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71. Ground"Water Monitoring Report Third Quarter 2001', - WELDON CHURCH PROPERTY ' t i 104 West Beverly Place Tracy; California. 1.0.- INTRODUCTION 'At-the request of Mr Weldon Church, Advanced GeoEnvironmental,-;Inc. (AGE) has prepared this 1 quarterly ground water monitoring reportfor the site at,104 West Beverly Place, Tracy, California (the site). The scope of work included monitoring and sampling-seven wells;-obtaining laboratory, . analyses of the samples and preparation of this report: The site setting is illustrated on Figure 1. Locations of structures, borings and monitoring wells related to the site are illustrated on Figure 2. Site history and findings fromprevious investigations and previous monitoring events at the site are. detailed.�in Preliminary Investigation and Evaluation Report - September 1996 (PIER), dated. 10 September 1996' and-Ground Writer Monitoring Report -First Quarter_2000, dated 09'August •. 2000, both prepared by AGE. 2.0. BACKGROUND The site is located in a residential area of central Tracy, California, in San Joaquin County(Figure•1). N'. One house and a detached garage/storage area are.curreritly•located on the property. An apartment complex is located immediately west of the former UST area;residences are located to-the south and east offthe site. One small capacity(550-gallon) UST was installed at the site in.the early 1980s. The ' tank was used to fuel vehicles associated with Church Refrigeration,°a company owned and operated by,Mr. Weldon Church. : 'P 3.0ROCEDURES : > ' The August 2001 monitoring event was'performed iiiaccordance with Regional Water,Quality Control Board ; Central Valley Region (RWQCB-CVR)'and,San Joaquin County Public Health ' ;Services - Environi ental Health.Division'(PHS-EHD)'guidelines for investigation of underground storage tank (UST) sites and,for samphn' g-ground water monitoring wells, respectively. ' 3.1. MONITORING WELL PURGE PROCEDURES ' On 17 August 2001,,a•Solinst water level meter was used to measure the depth-to ground water in ' each well relative to the,top of.the'well casing. After ground water depth,measurements;we're collected, each monitoring well was purged; using a .new, clean, disposable,'plastic .bailer. Approximately 2.75 to 9'gallons of water were evacuated.from each monitoring well, a minimum of three casing-water volumes, per well. Advanced GeoEnvironwcntal Inc.