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Additional,Site Assessment Work Pian NATIONAL FRE GHT .2850 Loomis Road, Stock n, California 1.0. -INTRODUCTION At the request of Mr. Daniel Folcher;Advanced GeoE vironmental, Inc-.'(AGE) has prepared the enclosed Additional Site Assessment Work Plan for the property at 2850 Loomis.Road, Stockton, California(the site).The proposed work-includes:.1)estimation of the masses ofpetroleum-impacted soil at thesite-and 2)advancement of two soil borings at he former underground storage tank(UST) location to further define the vertical extent of petrole impacted soil and ground water;one of the soil borings subsequently will be completed as a deep ground water monitoring well. The location of the site is illustrated on Figure 1.-A plan of the site i4 illustrated on Figure.2.- This :This work -plan was prepared asrequired by the. S i Joaquin-County -Environmental Health Department(EHD)by letter dated 06 July 2006(Appen ix A), and is in accordance with Appendix A-to Tri-Regional Recommendations =:Reporting, date 30 August 1991, prepared by the Central Valley Regional Water Quality ContV Board for the 'rivestigatiorl of underground storage tank (UST)sites.Appendix B presents the adsorbed mass volt me calculation for petroleum hydrocarbons. as diesel; 1,097kg or.2,4`18 lbs of TPH-d,are adsorbed t the site. _ 2.0. SCOPE OF WORK The scope'of the work includes the advancement of one pilot.soil boring for the installation of one ground water monitoring well, and a soil.boring for c llection.and analysis of soil samples. The scope of work will consist of the following tasks: • Permitting and pre-field work activities; • Drilling and soil sample-collection; n • Monitoring well installation.and development; • Ground water sampling and analysis; and Preparation of a report of findings. 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES Applicable site-assessment permits (drilling and encroa amen)ill be obtained from the EHD.-In addition;an.update to the health and safety plan presenlI on-file will be.prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute ,for Occupational Safety -and Health Adm nistration, U.S.- Coast Guard and U.S. Advanced GeoEnvironroental,Inc.