2011-12-09_REPORT - M1977004 - Laserfiche WebLink

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I� Two soil samples were collected at the utility excavations at IC -10300 and IC -10370 and analyzed for Uranium total metal content using EPA analytical method SWA 846 - 6020B Inductively Coupled Plasma /Mass Spectrometry (ICP /MS) — Total metals for Uranium. Sample results are presented in milligrams per kilogram (mg /kg) in Table B. - Analytical results Health and Safety It was expected that some dust would be generated during drilling activities. The OSHA permissible exposure limit (PEL) for nuisance dust exceeds the PEL for uranium at site concentrations. The Health and Safety plan was updated to include: • Monitoring of nuisance dust • Recording of radioactivity of drill cuttings from depth, • And assessing personnel using a frisker during end -of -day decontamination. Site monitoring was performed in accordance with the Health and Safety Plan using a Ludlum model 3 pancake "frisker" (serial number 194001, Pine# 05152) and a Dataram model 4000 continuous air monitor (serial number D464, Pine #07387). Instruments were verified for calibration and deployed concomitant with all invasive work (drilling, excavation, and abandonment). The air monitoring instrumentation was placed each day near work areas (adjacent to drilling and borehole logging activities). At no time during field operations did nuisance dust exceed the OSHA PEL of 5 mg /m Air monitoring runtimes averaged 9 hours 48 minutes. The maximum time weighted average dust concentration in work areas was 0.217 mg /m g:\eprojed\banick\ao000102.0001 pitch reclamation projedtao102, bardck- pfch\piezo replacement reporting\d raftUar _pitch_piezo_replacement_pdd.doc Pitch Reclamation Project - Piezometer Replacement Field Activities Report 4 Depth (inches below ground Uranium Sample ID Location surface) (mg /kg) Utility IC10300 24 08032011 Excavation 24 19 Utility 1C10700_24_08032011 Excavation 24 39 I� Two soil samples were collected at the utility excavations at IC -10300 and IC -10370 and analyzed for Uranium total metal content using EPA analytical method SWA 846 - 6020B Inductively Coupled Plasma /Mass Spectrometry (ICP /MS) — Total metals for Uranium. Sample results are presented in milligrams per kilogram (mg /kg) in Table B. - Analytical results Health and Safety It was expected that some dust would be generated during drilling activities. The OSHA permissible exposure limit (PEL) for nuisance dust exceeds the PEL for uranium at site concentrations. The Health and Safety plan was updated to include: • Monitoring of nuisance dust • Recording of radioactivity of drill cuttings from depth, • And assessing personnel using a frisker during end -of -day decontamination. Site monitoring was performed in accordance with the Health and Safety Plan using a Ludlum model 3 pancake "frisker" (serial number 194001, Pine# 05152) and a Dataram model 4000 continuous air monitor (serial number D464, Pine #07387). Instruments were verified for calibration and deployed concomitant with all invasive work (drilling, excavation, and abandonment). The air monitoring instrumentation was placed each day near work areas (adjacent to drilling and borehole logging activities). At no time during field operations did nuisance dust exceed the OSHA PEL of 5 mg /m Air monitoring runtimes averaged 9 hours 48 minutes. The maximum time weighted average dust concentration in work areas was 0.217 mg /m g:\eprojed\banick\ao000102.0001 pitch reclamation projedtao102, bardck- pfch\piezo replacement reporting\d raftUar _pitch_piezo_replacement_pdd.doc Pitch Reclamation Project - Piezometer Replacement Field Activities Report 4