131 LA UR 03 5862 - National Nuclear Security Administration ...

for reporting under Section 313 of the Emergency Planning Community Right-To-Know Act (42 USC) andfor reporting regulated air pollutants estimated from research and development operations in the annualEmissions Inventory Report (LANL 2000a, 2001a).Air emissions shown in Tables A-1 through A-14 of Appendix A are divided into emissions by KeyFacility. Emission estimates (expressed as kilograms per year) were performed in the same manner as thosereported in the 1999, 2000, and 2001 Yearbooks (LANL 2000b, 2001b, 2002a, respectively). First, usageof listed chemicals was summed by facility. It was then estimated that 35 percent of the chemical usedwas released to the atmosphere. Emission estimates for some metals, however, were based on an emissionfactor of less than one percent. This is appropriate because these metal emissions are assumed to result fromcutting or melting activities. Fuels such as propane and acetylene were assumed to be completely combusted;therefore, no emissions are reported.Information on total volatile organic compounds and hazardous air pollutants estimated from researchand development operations is shown in Table 3.1.2.2-1. Projections by the SWEIS ROD for volatileorganic compounds and hazardous air pollutants were expressed as concentrations rather than emissions;direct comparisons cannot be made, and, therefore, projections from the SWEIS ROD are not presented.The volatile organic compound emissions reported from research and development activities reflectquantities procured in each calendar year. The hazardous air pollutant emissions reported from research anddevelopment activities generally reflect quantities procured in each calendar year. In a few cases, however,procurement values and operational processes were further evaluated so that actual air emissions could bereported instead of procurement quantities. As for particulate matter emissions, operation of the air curtaindestructors resulted in increases of volatile organic compounds and hazardous air pollutants emissionsduring 2002. The air curtain destructors accounted for 22.9 and 2.1 tons of volatile organic compounds andhazardous air pollutants, respectively.Table 3.1.2.2-1. Emissions of Volatile Organic Compounds and Hazardous Air Pollutants fromChemical UsePOLLUTANTEMISSIONS (TONS/YEAR)1999 2000 2001 2002Hazardous Air Pollutants 13.6 6.5 7.4 7.74Volatile Organic Compounds 20 10.7 18.6 14.93.2 Liquid EffluentsLANL discharges wastewater via 21 outfalls operating under its NPDES permit. Based on dischargemonitoring reports, as reported by LANL’s Water Quality and Hydrology Group and on operational recordswhen available, effluent flow through NPDES outfalls totaled an estimated 178.18 million gallons in CY2002. This is an approximate increase of 54.15 million gallons over CY 2001 (124.04 million gallons). Thisvolume of discharge is below the SWEIS ROD projection of 278.0 million gallons.With implementation of the new NPDES permit on February 1, 2001, Water Quality and Hydrology iscollecting and reporting actual flows that are being recorded by flow totalizers at most outfalls. At outfallswithout totalizers, the flow is calculated based on instantaneous flow. Historically, instantaneous flow wasmeasured during field visits as required in the NPDES permit. These measurements were then extrapolatedover a 24-hour day/seven-day week. Details on all NPDES noncompliance results are provided in the 2002Environmental Surveillance Report (LANL, in preparation).Key Facilities accounted for approximately 47 million gallons of the CY 2002 total. Comparison betweenthe projected and actual number of outfalls by watershed can be found in Table 3.2-1. (Relevant details on the3-4SWEIS Yearbook—2002