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TH LMARK - ROUP - - Site-Specific Health and -Safety, Plan ENGINEERS E •GEOLOGISTS, INC. I'' - ENVIRONMENTAL MONITORING EQUIPMENT Check if - Required Type of Equipment When Recorded, _ _ Where Recorded Combustible Gas Meter_ - - _•. _ - _ _ _ Oxygen Monitor - - - - I HNU X OVA = - During the drilling and-sampling, soil samples will be screened -_ - hewill twice borehole. This minimizete and a "gross assessment of the vertical extent of during sam lin soils potentially impacted by volatile organic compounds In addition;will be at-the_ downwind edge of exclusion _ - zone during drilling and sampling on an hourly. basis. Field GC Scintillometer Gieger Counter Colorimetric Tubes Dosimeters/Film Badges Other = COMPOUNDS AND CONCENTRATIONS ` . -ACTION-LEVELS - Project action levels are determined-by the potential-total petroleum hydrocarbons (TPH) levels that may be -. encountered during sampling. -Action-levels:will be determined-using a flame ionization detector. (FID) at-the previously described sampling-points.- The-determined action levels':-concentrations-and corresponding courses of action are as follows: : �++ 1 When air readings are found to be at or above 50 parts per million----(ppm) half face respirators with organic vapor cartridges'will be worn;by_all personnel r 2. At concentrations of hydrocarbons in-air-of-500 ppm personnel will move away from the site and"7 further -_ evaluation of the site_ and procedures will become necessary. It is not expected-that this action level will be reached-at any.time during the project: - 3 Third level of action.would address the general public in the vicinity.-of-the project site. The potential- _ -- for this level of action-is extremely unlikely. -- - - 1 - - -Page- 7