19 Well ProductionBrineScale buildup in gas equipment (well pipes, feeder lines, condensate tanks)Radon in natural gas
20 Wellhead Radon Concentrations Calculated radon concentrations: 36.9 to 2576 pCi/LR Johnson (EPA, 1973) measured average 37 pCi/L in pre-fracking period
21 Transit Distance to Consumers Distance to New York consumers from TX and LA wells: 1800 milesDistance to Ne York consumers from Marcellus Shale: <400 milesPipeline velocity: 11 mphRadon half-life: 3.8 days
22 Dilution in NYC Apartments Avg. volume of apartment: 183 m3 (EPA, Exposure Factors Handbook)Avg. air exchanges in apartment: 0.71/hr
23 Increase in Lung Cancer Rates Wellhead concentration (high): 2576 pCi/LAir NYC apartment: 0.482pCi/l lifetime exposure concentration in living spaceLifetime risk: 2.56E-03 (excess deaths per capita; EPA risk model, 2003)30484 excess lung cancer deaths per 11.9 million residents
25 Summary Rock cuttings: solid waste landfill, wet Drill fluids: recycle somewhat, slightly hotFlowback water/brine: hot, licensed, but then?Filter/sludge: licensed, but then?Pipes: licensed, but then and also < 50 microR/hr released for commercial useRadon: hold up
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