(WMEIS) Table S-2

Table S-2. Summary comparison of environmental impacts of each alternative.

Public Health
Expected waste forecast: Offsite MEIa; fatal cancer probabilityb	4.1¥10-10c	5.8¥10-9	1.7¥10-8	9.0¥10-8
Offsite Population; fatal cancersd (1993 baseline: 0.11)	3.5¥10-6	2.8¥10-4	7.5¥10-4	0.0050
Maximum waste forecast: Offsite MEIa; fatal cancer probabilityb	Not applicable	4.0¥10-8	1.7¥10-7	2.0¥10-6
Offsite population; fatal cancersd (1993 baseline: 0.11)	Not applicable	0.0017	0.007	0.11
Occupational Health
Involved worker; fatal cancer probabilityb	1.0¥10-5	1.3¥10-5	1.5¥10-5	1.6¥10-5
Involved worker; fatal cancersd (1993 baseline: 3.3)	0.021	0.028	0.032	0.034
Accidents (highest risk for each receptor)
Uninvolved worker at 100 meters (328 feet)	LCFe Ff Rg 0.052 0.02 0.001	All values are same as	All values are same as	All values are same as
Uninvolved worker at 640 meters (2,100 feet)	9.2¥10-4 0.02 1.8¥10-5	no action	no action	no action
MEI	1.7¥10-5 0.02 3.3¥10-7
Offsite population; fatal cancers	0.84 0.02 0.017


Air Resources
Construction Increase of criteria pollutants over baseline (in micrograms per cubic meter); baseline: [170.63 (standard = 40,000)] largest increase would be carbon monoxide (1hour standard) reported here	1,919	769	673	737
Operations Offsite MEI dose (millirem per year) (see Public Health for health effects)	1.2¥10-4	0.011	0.032	0.18
Population dose (person-rem per year)	2.9¥10-4	0.56	1.5	10
Largest increase (in micrograms per cubic meter) would be carbon monoxide (1-hour standard)	24	Same as no action	31	Same as no action
Surface Water Resources
Construction Potential erosion impacts to SRS streams	Very small erosion impacts	Same as no action	Same as no action	Same as no action
Operations Contaminant concentrations in Savannah River (tritium peaks in 70 to 237 years)	Very small; substantially below drinking water standards	Same as no action	Same as no action	Same as no action

Groundwater Resourcesh
Minimum waste forecast	Not applicable	Pu-239i; 0.24 millirem per year	Pu-239i; 0.23	Pu-239i; 0.15
Expected waste forecast	Pu-239i; 0.33	Same as no action	Same as no action	Pu-239i; 0.21
Maximum waste forecast	Not applicable	Pu-239i; 0.79	Pu-239i; 0.43	Pu-239i; 0.25
Socioeconomics (baseline: 1995 SRS employment of 20,000)
Expected waste forecast:
Construction Peak number of jobs	50	80	170	160
Net change in regional construction employment	No net change	Same as no action	Same as no action	Same as no action
Impact	No impact	Same as no action	Same as no action	Same as no action
Operations Peak number of jobs	2,450	2,560	2,550	1,940
Mode of filling jobs	Reassignment of existing workers	Same as no action	Same as no action	Same as no action
Impact	No impact	Same as no action	Same as no action	Same as no action
Maximum waste forecast:
Construction Peak number of jobs	Not applicable	260	310	350
Net change in regional construction employment		No net change	No net change	No net change
Impact		No impact	No impact	No impact
Operations Peak number of jobs		11,200	10,010	10,060
Mode of filling jobs		3,300 new jobs	2,110 new jobs	2,160 new jobs
Impact		Small impact	Small impact	Small impact

Land Use (impact measured in terms of land required)j
Minimumj waste forecast: Land requirements in E-Areak	Not applicable	108 acresl	107	141
Expectedm waste forecast: Land requirements in E-Area	241	152	158	167
Maximumm waste forecast: Land requirements in E-Area	Not applicable	254	254	254
Land requirements elsewhere on SRS		802	756	775
Ecological and Geologic Resources (impact measured in terms of acres to be cleared)
Minimum waste forecast:	Not applicable	73	90	111
Expected waste forecast:	160	96	117	128
Maximum waste forecast:	Not applicable	986	940	959
Traffic
Construction Peak vehicles per hour arriving at E-Area (1993 baseline: 741)	788	824	907	896
Operations Uninvolved truck traffic plus waste shipments per day (1993 baseline: 785)	815	817	819	814

Transportation - Incident free (additional excess fatal cancers)
Involved workers Uninvolved workers Remote populations	0.06 additional excess fatal cancer per year could develop 8.4¥10-4 additional excess fatal cancer per year could develop Not applicable	0.12 additional excess fatal cancer per year could develop 8.8¥10-4 additional excess fatal cancer per year could develop 1.2¥10-6 additional excess fatal cancer per year could develop	0.098 additional excess fatal cancer per year could develop 8.9¥10-4 additional excess fatal cancer per year could develop 3.2¥10-3 additional excess fatal cancer per year could develop	0.079 additional excess fatal cancer per year could develop 8.6¥10-4 additional excess fatal cancer per year could develop 2.7¥10-4 additional excess fatal cancer per year could develop
Transportation - Accidents (latent cancer fatalities over 30 years)
Onsite population	LCFe Pn Ro 120 2.6¥10-6 3.2¥10-4	LCFe Pn Ro Same as no action	LCFe Pn Ro Same as no action	Same as no action
Offsite population	14 2.6¥10-6 3.5¥10-5	Same as no action	Same as no action	Same as no action
Remote population (enroute to offsite facility)	NAp NA NA	2.4¥10-6 0.0011 2.5¥10-9	0.18 1.6¥10-6 2.9¥10-7	Same as alternative A

a. MEI = maximally exposed individual.

b. Values represent the annual probability of an individual (MEI or worker) contracting a fatal cancer due to 30 years of exposure to radiation from waste management activities at SRS.

c. An explanation of scientific notation is provided in Acronyms, Abbreviations, and Use of Scientific Notation.

Values represent the number of annual fatal cancers to a group (offsite population or onsite involved workers) due to 30 years of radiation exposure. Baseline is the number of annual fatal cancers that could result from exposure to radiation released in 1993.

e. Latent cancer fatalities per accident (dose ¥ cancer conversion factor).

f. Frequency of occurrence (accidents per year).

g. Risk defined as estimates of increased risk of a latent cancer fatality per year (frequency ¥ latent cancer fatalities per accident).

h. Values are peak dose per year. All would occur more than 10,000 years in the future. No exceedances of 4 millirem per year drinking water standard.

i. Pu = plutonium. Dose does not include contribution from disposal of stabilized waste forms in slit trenches or waste in RCRA-permitted vaults. Groundwater impacts from all vaults and shallow land disposal would be less than 4 millirem per year.

j. Acreage shown is the cumulative amount needed for construction activities over the 30-year period.

k. Current land-use plans have designated E-Area as an area for waste management facilities.

l. To convert from acres to square kilometers, multiply by 0.004047.

m. Acreage shown is the greatest amount needed for construction activities at any time during the 30-year period.

n. Annual probability of occurrence over the 30-year forecast period.

o. Risk defined as estimates of annual increased risk of latent cancer fatality over the 30-year period (probability latent cancer fatalities per accident.)

p. NA = not applicable. (There are very few offsite radioactive waste shipments under the no-action alternative).

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