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0,,710 aCT'ec,hnws Inc • Page 2 <br /> Work Plan Addendum <br /> Cardoza(Main St) <br /> Project No 662 2 <br /> • July 22, 1998 <br /> Groundwater Sample Analyses <br /> As proposed in the June 14, 1998 work plan, one groundwater hydropunch type sample from <br /> each borehole will be submitted to a State certified laboratory for analysis for <br /> • Benzene, toluene, ethylbenzene and xylene (BTEX) by EPA method 602 <br /> • Gasoline range petroleum hydrocarbons (TPH-G)by EPA method 5030/8015(m) <br /> As requested by Mr Infurna, the groundwater samples will also be submitted to a State <br /> certified laboratory for analysis by EPA method 8260 for <br /> • MTBE <br /> • DIPE <br /> • ETBE <br /> • TAME <br /> • TBA <br /> • Methanol <br /> • Ethanol <br /> The detection limits for these compounds are listed below A Chain of Custody will be <br /> completed for all samples collected and tracked to ensure sample integrity <br /> Detection Limits BTEX TPH-Get ano t ano <br /> ater ?a <br /> • Health and Safety Pian <br /> 1 <br /> Geological Technics has incorporated the following health and safety precautions while <br /> working on sites containing unidentified hazardous waste Once the nature and extent of <br /> contamination has been determined, additional work on site will be met with the proper <br /> precautions <br /> • Workers Health and Safety <br /> • Work Space Safety <br /> The perimeter of the work space should, if possible, be 20 feet from the drilling rig or <br /> excavation site Brightly colored delineators will mark the working perimeter All <br /> unauthorized personnel will not be allowed access into the work space <br /> The project supervisor will coordinate all field activities and maintain the safest possible <br /> working environment at all times If an emergency occurs, the supervisor will immediately <br /> contact the proper authorities <br /> • Skin and Head Protection <br /> Disposable suits, boots, and gloves will be worn when the working conditions require such <br /> precautions <br /> Disposable plastic gloves will be worn at all times during soil and groundwater sampling <br /> The gloves will be changed after each sample has been collected <br /> . Used disposable clothing will be properly discarded at the end of each working day <br />