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tr 1 Closure Summary-Report• May 108 WELDON CHURCH PROPERTY .104 West Beverly Place a Tracy, California 1.0. INTRODUCTION ',, At the..request'of Mr. Weldon Church;Advanced.GeoEnvirorimental, Inc'(AGE)'has prepared thisf '• Qivarterly-Reportfor the site at 104 West Beverly Place, Tracy, California (the-site); The scope of- work included the installaiion'of three soil borings,the'completioh of one boring as agroundwater J monitoring'well,'the collection of soil-samples and a grab water sample, monitoring and sampling, ` seven well`s, obtaining laboratory analyses of the samplesrand preparation of-this report. The site; setting is illustrated on Figure.1 - Location Map. Locations of structures; borings;and monitoring. wells related`to the site.are illustrated on Figure 2 - Site`Plan. " Site history. and firidings'from previous'investigations and previous monitoring events+at the site " detailed in the Preliminary Investigation and Evaluation Report.- September 1996 (PIER) prepared• ' by•AGE.-These.details were reviewed for the proposed-recommendations listed'in.this CSR 2.0.1--. PROCEDURES The Work^was performed in accordance with San Joaquin County Public 'Health ,Services - Environmental Health Division (PHS-EHD).and Central Valley Regional Water Quality-Control Board guidelines for investigation of..underground.storage.tarik (,UST) sites. µ _2:1 -DRILLING AND SOIL SAMPLING On 07 May 1998, soil borings B13 through'B.1'5,-were advanced'manually and one boring was,,,. completed as a ground water monitoring well. Boring's B 1,3, B 14 (MW-7) and'B 15 were established on the adjacent ro 'e'rt .at'52,We§t Beverly Place. The installation of the borings was• `erformed ' F "'using a;six-Inch'dlatneter hand`auger. The equipment'and"two-man crew were supplied'by Soils ' :.Exploration Services (SES) of Benicia, California. The-locations of the borings are shown on;Figure Duriri drillzn au er returns,were mohitored for the resence of h drocarbori va or'usih ari g: l?,. g P Y P g, organic vapor meter(QVM)equipped-with a photo-ionisation detector,(PID::.Therino Environmental r. ; 580A,.10.0 eV;calibrated to isobutylene). Auger returns.were placed on plastic sheeting and stored on-site pending laboratory analysis. 'f Sarriples were collected ineach.boring using metric soil sampler loaded with.two.2-inch X 3-inch' ' ' • •` brass sleeves. A 15-pound hammer .was used to advance'`the sampler 6 inches. All 'sampling equipment'was washedin an,Alconox solution'and rinsed'-twice with water'prior to each,sampling', 4danced GcoEnvironmental,Inc.