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LFR, Inc. . 0 <br /> noncompliance with this HSP is noted and to immediately stop work in cases where an <br /> immediate danger to site workers or the environment is perceived. Responsibilities of <br /> the SSO also include: <br /> • obtaining and distributing personal protective equipment (PPE) and air monitoring <br /> equipment necessary for this project <br /> • limiting access at the Site to authorized personnel <br /> • communicating unusual or unforeseen conditions at the Site to the Project Manager <br /> • supervising and monitoring the safety performance of site personnel to evaluate the <br /> effectiveness of health and safety procedures and correct deficiencies <br /> • conducting daily tailgate safety meetings before each day's activities begin <br /> • conducting a site safety inspection prior to the commencement of each day's field <br /> activities <br /> 4.4 Subcontractor Personnel <br /> Subcontractor personnel are expected to comply with the minimum requirements <br /> specified in this HSP. Failure to do so may result in the removal of the subcontractor <br /> or any of the subcontractor's workers from the job site. Subcontractors may employ <br /> health and safety procedures that afford them a greater measure of personal protection <br /> than those specified in this plan so long as they do not pose additional hazards to <br /> themselves, the environment, or others working in the area. <br /> 5.0 HAZARDS OF KNOWN OR EXPECTED CHEMICALS OF CONCERN <br /> SFPP has completed several phases of investigation and remedial activities in response <br /> to past Site activities and product releases. The following sections present a summary <br /> of the groundwater quality sampling results during the fourth quarter 2005. <br /> Non-aqueous-phase hydrocarbons (NAPH) were not encountered in monitoring wells <br /> during December 2005. The absence of NAPH in on-site monitoring wells is consistent <br /> with historical observations since 1996. <br /> Chemical analysis results for groundwater samples collected from monitoring wells at <br /> the site during the fourth quarter 2005 revealed the following: <br /> The highest concentrations of benzene, toluene, ethylbenzene and xylenes (BTEX) <br /> compounds (9,900 micrograms per liter [µg/1] benzene, 230 gg/l toluene, 1,000 <br /> µg/1 ethylbenzene, and 516 µg/l total xylenes) were detected in the groundwater <br /> sample collected from monitoring well SP/M-10. The groundwater sample <br /> collected from well SP/M-1 contained benzene (2,100 /Ag/1), toluene (11 µg/1), <br /> ethylbenzene (19 µg/1), and total xylenes (11 µg/1). Groundwater samples collected <br /> from SP/M-7 and SP/M-9 contained benzene at concentrations of 14 µg/l and 4,900 <br /> Page 4 KMEP-Stockton-HASM.doaLFR <br />