ML022490095

Snec Facility Dcgl Values for Volumetric Contamination - Calculation No. 6900-02-008, Pages 1 - 179

ML022490095
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	05/28/2002
From:	GPU Nuclear Corp
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
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Download: ML022490095 (193)

Text

pCi/g (Solids) or pCi/I (liquid)

Analysis H-3 Sr-90 Co-60 Cs-137 Am-241 Pu<238 Pu-239 Pu-241 C-14 NI-63 Eu-I52 SNEC Sample No Date Locatlon/Descrlptlon Soil 0.228 11.9 <_8_< 3_<_1 None Assigned 10/13/94 1994 Soil Remediation Report Results < 0.4 < 0.03 0.45 < 0.04 < 0.08 <8 <3 <1 SXSGL84S 11/5/94 (Recount 1999) 1.1 38.6 < 0.4 SXSGF81S(5) 11/9/94 1994 Soil Remedliation Report Results Results < 0.5 0.968 33.1 < 0.01 < 0.01 <6 <2 <1 SXSGF81S 11/9/94 1994 Soil Remediation Report <1

< 0.5 < 0.04 3.58 < 0.03 < 0.03 <7 <3 SXSGG72S 11/9/94 1994 Soil Remediation Report Results

< 0.4 2.35 319 < 0.02 < 0.04 <4 <4 <1 SXSGG761 11/19/94 1994 Soil Remediation Report Results 5/7/96 Sediment - Weir Pipe (-70' out Toward River from Weir) 0.51 46 SX881960173SD 5/7/96 Sediment - Weir Pipe (-10' out Toward River from Weir) < 0.8 36 SX881960174SD Ground Water < 140 SXGWG16 1/19/98 4/7/98 CV Pipe Tunnel Water Sample (April 7, 1998) 160 <4 5.8 SXGWG16 CV Pipe Tunnel Water Sample (June 29,1998) < 120 < 1.5 7.4 SXGWG16 6/29/98 22.9 66500 96 SX822990235c0 4/15/99 Scabble Dust of CV Cavity 779' El. - Wall 22 31400 <7 SX861990236CO 4/15/99 Scabble Dust of CV Cavity 779' El. - Floor Scabble Dust from SNEC SW <5 29900 <5 None Assigned 6/2/99

< 0.4 2170 <2 None Assigned 6/2/99 Scabble Dust from SNEC Sump Composite BKGND Soil < 0.02 0.55 <2 < 0.05 < 0.05 SXSOBKG1 7/14/99

< 0.02 0.51 < 0.6 < 0.05 < 0.05 DA-SXSOBKG1 7/14/99 Composite BKGND Soil

< 0.03 0.467 0.43 0.91 0.73 < 70 < 20 < 20 < 0.09 SXSOBKG1 7/14/99 Composite Soil Background

< 0.02 0.15 < 0.6 < 0.05 < 0.04 SXSOBKG2 7/14/99 Composite BKGND Soil

< 0.02 0.134 0.6 < 0.3 0.67 < 50 <8 < 20 < 0.06 SXSOBKG2 7/14/99 Composite Soil Background

< 0.02 < 0.04 < 0.03 <4 SXSO3KG1A 7/14/99 Background Soil Composite (10 miles off-site)

< 0.03 < 0.01 < 0.01 <2 SXSO3KG2A 7/14/99 Background Soil Composite (10 miles off-site)

South Garage Storm Main < 0.06 0.26 SX10SD990136 7/15/99 SXI1SD990134 7/15/99 South - Old Parking Lot Storm Drain < 0.03 0.21 _

Weir Discharge to River - 30' in from Excavation Beyond Fence < 0.2 3.5 SX10SL990032 7/19/99

< 0.006 < 0.0008 < 0.002 SXSL0032 7/19/99 Weir Discharge to River 30' Feet In at Excavation Beyond Fence 210 <8 <3 21.2 < 0.4 < 0.3 < 0.3 < 70 <2 < 30 <6 SX10SD990022 7/21/99 Discharge Tunnel Sediment- End of Tunnel SX8SD990027 7/21/99 South Garage Toilet Effluent to Septic Tank < 0.14 0.47 1 _

to Septic Tank < 0.03 < 0.016 < 0.007 SXSD0027 7/21/99 South Garage Toilet Effluent

' < 20 < 200 SXGWMWGEO 7/22/99 Composite of All GEO Well Water Samples T1#-14181

< 100 <8 30 4800 5.4 1.6 2.5 < 60 <6 55 < 20 SX10SD990033 7/22/99 Discharge Tunnel 6" Drain Line Scraping

< 0.09 62 < 0.05 < 0.04 < 0.04 SX10SD990034 7/22/99 1st Seal Chamber Crud Pile Below 3" Vertical Drain Line 7/22/99 Seal Chamber #1Water < 130 SX10WA990035 7/22/99 Steam Tunnel Water -12' < 130 SX10WA990036 South Garage Storm Drain Line < 0.13 < 0.18 DA-SX10SD990024 7/22/99 Southwest Garage #4 Floor Drain Rim < 0.3 6.4 SX1OSD99223 7/22/99 South Garage Storm Drain Line < 0.06 0.16 SX10SD990024 7/22/99

< 0.014 < 0.0007 < 0.002 SX5SD99223 7/22/99 Actual Sample Number SX10SD99223 (SW Garage #4 Drain)

Discharge Tunnel Wall Scrapingl 120 < 0.2 < 0.04 < 0.04 X10nD9900n31 7/29199 _0.84 1

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 NI-63 Eu-152 SNEC Sample No Date LocatloniDescription SXI 1SD990133 8/12/99 Shunt Line Man Hole Sample < 0.04 < 0.04 DA-SX11SD990135 9/2/99 SW Garage - South of Fence - 12" Line < 0.07 < 0.07 SX10SD990137 9/2/99 South Garage Storm Drain Feed Pipe 12" Une < 0.04 0.52 SXISD990135 9/2/99 SW Garage - South of Fence - 12" Line < 0.05 0.072 SXGWGEO4 10/14/99 Groundwater Well - Overburden Groundwater < 130 <7 <7 SXGWGE03 10/14/99 Groundwater Well - Overburden Groundwater < 130 <6 <5 SXGWGEO8 10/14/99 Groundwater Well - Overburden Groundwater < 130 <6 <5 SXGWMW1 10/14/99 Bedrock Monitoring Well 1Water 130 < 0.8 <6 <5 10/14/99 Junlata River Surface Water < 5 < 5 SXSWA1-4 SXGWMW4 10/14/99 Bedrock Monitoring Well 4 Water 130 <4 <4 DA-SXGWGEO1 10/14/99 Groundwater Well - Overburden Groundwater < 130 <4 <3 SXGWGEO2 10/14/99 Groundwater Well - Overburden Groundwater < 130 <3 <3 SXGWGEO5 10/14/99 Groundwater Well - Overburden Groundwater < 130 <3 <3 SXGWGEO6 10/14/99 Groundwater Well - Overburden Groundwater < 130 <3 <3 SXGWGEO01 10/14/99 Groundwater Well - Overburden Groundwater < 130 <2 <3 SXGWMW3 10/14/99 Bedrock Monitoring Well 3 Water < 130 <3 <3 SXGWE1-1 10/14/99 Line Shack Faucet Well Water < 130 <4 <3 SXGWGEOI 10/14/99 Groundwater Well - Overburden Groundwater 140 <3 <2 SXGWGEO7 10/14/99 Groundwater Well - Overburden Groundwater < 130 <3 <2 SXGWMW2 10/14/99 Bedrock Monitoring Well 2 Water < 130 < 0.8 <3 <2 SXI11SL990128 10/14/99 Spray Pond - Sample #5 < 0.02 0.29 SX4PC990104 10/14/99 CV Dome Paint Chips (see 110593) (PS-12) 400 27000 2.5 1.9 5.8 SX4PC990105 10/14/99 CV Dome Paint Chips (see 110609) (PS-13) 290 18000 SX4PC990106 10/14/99 CV Dome Paint Chips (see 110609) (PS-14) 140 8700 SX4PC990103 10/14/99 CV Dome Paint Chips (see 110609) (PS-11) 69 6100 sX4PC990094 10/14/99 CV Dome Paint Chips (see 110607) (PS-2) 9.6 1400 SX4PC990100 10/14/99 CV Dome Paint Chips (see 110608) (PS-8)_ <3 1300 sX4PC990102 10/14/99 CV Dome Paint Chips (see 110608) (PS-10) 14 1200 SX4PC990098 10/14/99 CV Dome Paint Chips (see 110607) (PS-6) 38 570 SX4PC990098 10/14/99 CV Dome Paint Chips (see 110607) (PS-6) 37 530 2 0.38 1.1 sX4PC990101 10/14/99 CV Dome Paint Chips (see 110608) (PS-9) <9 470 SX4PC990095 10/14/99 CV Dome Paint Chips (see 110607) (PS-3) <6 150 sX4PC990097 10/14/99 CV Dome Paint Chips (see 110607) (PS-5) <6 110 SX4PC990096 10/14/99 CV Dome Paint Chips (see 110607) (PS-4) <8 88 SX4PC990099 10/14/99 CV Dome Paint Chips (see 110608) (PS-7) <3 35 SXPCTRU1 10/14/99 CV Dome Paint-SX4PC990093 (110582) (PS-1) <2 32 0.012 < 0.005 0.0091 SXPCTRU2 10/14/99 CV Dome Paint-SX4PC990094, 95, 96, 97 &98 (PS-2,3,4,5 &6) 0.096 0.041 0.065 SXPCTRU3 10/14/99 CV Dome Paint-SX4PC990099, 100, 101 & 102 (PS-7,8,9 &10) 0.11 < 0.0004 < 0.0012 SXPCTRU4 10/14/99 CV Dome Paint-SX4PC990103, 104, 105 &106 (PS-11,12,13,&14) 0.61 0.49 0.91 2

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis Eu-I52 SNEC SampleNo Date Locatlon/Descrlptioul ,I, H-3 8r0 ', 4. 'i,. Am .241 Pu-238 Pu-239 Pu-241 C-14 NI-63 SX11SD990129 10/14/99 First Man Hole Sample #1-8 Outside Fence"Awa, Fcbm Plaht <'0.04 4 ,_ _ __. _

SXGWG16 10/20/99 CV Pipe Tunnel Water Sample (October 1999) 150 ____ -: ___ _

SX4PC990110 10/21/99 CV Dome Paint Chips (see 110610) (PSO-1) < 0.7 < 1.8 SX4PC990111 10/21/99 CV Dome Paint Chips (see 110610) (PSO-2) <3 < 1.5 SXIISD990131 10/21/99 Man Hole Sample With Ladder, Outside Fence Toward Plant < 0.04 < 0.19 SX11SD990130 10/21/99 First Man Hole Sample #1-B Outside Fence Away From Plant < 0.18 < 0.17 SX4PC990114 10/25/99 CV Dome Paint Chips (see 110611) (PSO-5) <3 <4 SX4PC990115 10/25/99 CV Dome Paint Chips (see 110611) (PSO-6) <3 <4 SX4PC990113 10/25/99 CV Dome Paint Chips (see 110612) (PSO-4) <6 _ _3__ _

SX4PC990116 10/25/99 CV Dome Paint Chips (see 110611) (PSO-7) <1 _________

SX4PC990112 10/25/99 CV Dome Paint Chips (see 110610) (PSO-3) < 0.7 11 SXPCTRU5 10/25/99 CV Dome Paint-SX4PC990110,I111 & 112 (PSO-1, 2, & 3) 0.017 0.0058 0.0084 SXPCTRU6 10/25/99 CV Dome Palnt-SX4PC990114,115 & 116 (PSO-5, 6 & 7) < 0.017 < 0.0012 < 0.003 SX11SD990132 10/25/99 Man Hole Sample With Ladder, Ito 4 Field to Shoup Run < 0.08 0.23 _

DA-SX4PC990114 10/25/99 CV Dome Paint Chips (see 110611) (PSO-5) < 1.5 < 1.7 SX4PC990117 10/26/99 CV Dome Paint Chips (see 110612) (PSO-8a) <3 < 1.4 sX4PC9901 18 10/26/99 CV Dome Paint Chips (see 110612) (PSO-9)_ <0.6 < 1.4 SXPCTRU7 10/26/99 CV Dome Paint-SX4PC990113,117 & 118 (PSO-4, 8 & 9) < 0.008 <0.003 < 0.002 SXI11SL990121 10/28/99 Spray Pond - Sample #7 < 0.05 < 0.05 SX11SL990119 10/28/99 Spray Pond - Sample #6 < 0.03 < 0.03 SXI11SL990122 10/28/99 Spray Pond - Sample #9 < 0.03 < 0.03 SX11SL990123 10/28/99 Spray Pond - Sample #8 < 0.03 < 0.03 SX11SL990120 10/28/99 Spray Pond- Sample #10 < 0.019 < 0.02 SX11SL990127 10/28/99 Spray Pond - Sample #4 < 0.05 2.2 SX1IISL990126 10/28/99 Spray Pond - Sample #3 < 0.06 1.8 SX11SL990125 10/28/99 Spray Pond - Sample #2 < 0.05 0.72 SX11SL990124 10/28/99 Spray Pond - Sample #1 < 0.02 0.62 SXSL25262 10/28/99 Composite of Spray Pond Soll 125, 126 & 127 0.0035 < 0.0009 0.0043 SX10SD99274 11/11/99 0<0.17 Brick Samples of South Garage Window Sill < 0.14 SX10SL99182 11/16/99 Subsurface Sample#17 (0-3 ft) < 0.16 < 0.19 SX11SL99192 11/16/99 Subsurface Sample #23 (0-3') < 0.1 < 0.12 SX10SL99189 11/16/99 Subsurface Sample #34 (4-6') < 0.08 < 0.08 SXI I SL99193 11/16/99 Subsurface Sample #22 (4-6) < 0.06 < 0.07 SX9SL99186 11/16/99 Subsurface Sample #13 (10-14.5 ft)f <0.1 3.3 SX9SL99185 11/16/99 Subsurface Sample #13 (0-3 ft) < 0.08 1.5 SX10SL99191 11/16/99 Subsurface Sample #24 (0-4') <0.17 0.57 SXI0SL99225 11/16/99 Subsurface Sample #9 (0-3') _<0.19 0.56 SX10SL99198 11/16/99 Subsurface Sample #24 (0-4) < 0.14 0.38 SX11 SL99190 11/16/99 Subsurface Sample #22 (0-3) < 0.15 0.33 3

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis LocatlonlDescrlption H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 NI-63 Eu-152 SNEC Sample No Date SXI0SL99187 11/16/99 Subsurface Sample #24(5-6') < 0.08 0.078 SXSDW99176 11/17/99 1st Seal Chamber Water 220 < 1.3 <5 <8 < 0.03 < 0.03 < 0.03 SX5DW99175 11/17/99 2nd Seal Chamber Water 150 <6 <5 SX5DW99178 11/17/99 10' Tunnel Floor Water Sample < 140 <5 <5 SX5DW99179 11/17/99 170' Tunnel Floor Water Sample < 140 <5 <5 SX5DW99180 11/17/99 290' Tunnel Floor Water Sample < 140 <4 <4 SX5SD99254 11/17/99 2nd S.C.- 6" Pipe Internals < 0.4 < 0.6 SX5SD99258 11/17/99 3rd S. Chamber Sediment < 0.3 43 SX5SD99259 11/17/99 SSPDT Floor Sediment -32' < 0.9 27 SX5DW99177 11/17/99 3rd Seal Chamber Water 200 <6 20 SX5SD99262 11/17/99 SSPDT Floor Sediment -326' < 0.3 7 SX5SD99261 11/17/99 SSPDT Floor Sediment -100' < 0.4 4.3 SX5SD99252 11/17/99 16" Pipe Internal -138' SSPDT < 0.5 3.8 SX5SD99255 11/17/99 SSPDT- 15" Pipe Internals -160' < 0.2 2.2 SX5SD99256 11/17/99 SSPDT 8" Pipe Internal -163' < 0.15 2.2 SX5SD99263 11/17/99 SSPDT Floor Sediment -24' < 0.3 2.1 SX5SD99257 11/17/99 SSPDT 2nd S.C. Sediment -40' < 0.6 1.9 SX5SD99253 11/17/99 SSPDT Floor Sediment -220' < 0.3 1.4 SX5SD99260 11/17/99 SSPDT Floor Sediment -158' < 0.3 1.1 SX5SD99259 11/17/99 SSGSDT Floor Sediment @ 32' 0.021 0.0037 0.012 SX5SD261 & 262 11/17/99 SSGSDT Floor Sediment Composite @ 100 & 326' 0.035 < 0.0005 0.0042 SX5SD255 & 256 11/17/99 SSGSDT 8" & 15" Pipe Internal Composite (160 &163')_ <0.018 < 0.002 0.0081 SX5DW175-177 11/17/99 Composite Discharge Tunnel Water < 0.018 < 0.017 < 0.006 SX5SD99258 11/17/99 SSGSDT Seal Chamber #3 Sediment < 0.02 < 0.0015 0.0071 SXDW178-179-180 11/17/99 Composite Discharge Tunnel Water < 0.02 < 0.006 < 0.02 SXSSD99252 11/17/99 SSGSDT 16" Pipe Internal @ 138' < 0.04 < 0.0016 0.02 SX5SD99257 11/17/99 SSGSDT Seal Chamber @40' Sediment < 0.3 < 0.005 0.009 SX9SL99215 11/17/99 Subsurface Sample #19 (3-4)3 <0.2 < 0.32 sX9SL99200 11/17/99 Subsurface Sample #21 (0-3') < 0.13 < 0.2 sX9SL99213 11/17/99 Subsurface Sample #19 (0-3'4) <0.2 < 0.2 SX9SL99220 11/17/99 Subsuface Sample #20(4-8) < 0.12 < 0.2 sX9SL99206 11/17/99 Subsurface Sample #M-1 (0-3') < 0.18 < 0.18 sX9SL99218 11/17/99 Subsurface Sample #12 (0-3') < 0.04 < 0.11 SX9SL99214 11/17/99 Subsurface Sample #20 (9-12') < 0.11 < 0.11 SX9SL99202 11/17/99 Subsurface Sample #11 (4-6') < 0.3 9.3 SX9SL99195 11/17/99 Subsurface Sample #M-2 (0-3) < 0.19 1.8 sX9SL99210 11/17/99 Subsurface Sample #10 (7-12) < 0.2 1.4 sX9SL99209 11/17/99 Subsurface Sample #11 (0-3') < 0.13 0.79 SX9SL99217 11/17/99 Subsurface Sample #28 (7-12') <0.12 0.69 4

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis SNEC Sample No Date LocationlDescription:H-3. r 0-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C.14 N1-63 Eu-152 SX9SL99194 11/17/99 Subsurface Sample #M-1 (4-8)I < 0.14 0.T66 _ ___ __ ___r SX9SL9921-9 11/17/99 Subsuface Sample #29 (0-5)) - <0.07 0.59 sX9SL99201 11/17/99 Subsurface Sample #10 (0-8) < 0.07 0.51 DA-SX9SL99201 11/17/99 Subsurface Sample #10 (0-8) < 0.18 0.51 SX9SL99197 11/17/99 Subsurface Sample #M-2 (7-12') < 0.12 0.49 sX9SL99211 11/17/99 Subsurface Sample #18 (0-2') _<0.09 0.48 SX9SL99227 11/17/99 Subsurface Sample #28 (4-6) < 0.08 0.42 SX9SL99203 11/17/99 Subsurface Sample #11 (7-12') <0.15 0.34 sX9SL99216 11/17/99 Subsurface Sample #20(0-3') < 0.14 0.27 SX9SL99207 11/17/99 Subsurface Sample #M-1 (9-16') < 0.14 0.17 SX9SL99212 11/17/99 Subsurface Sample #21 (4-6) < 0.11 0.12 SX5SD99202 11/17/99 Actual Sample Number sX9SL99202 (Subsurface #11 (4-6))0.012 < 0.0007 < 0.003 SX11SL99226 11/18/99 Subsurface Sample #3(0-3) < 0.3 < 0.2 SX9SL99204 11/18/99 Subsurface Sample #2 (4-6') <0.17 < 0.06 SXIISL99229 11/18/99 Subsurface Sample #1(0-3) < 0.12 0.47 sX9SL99208 11/18/99 Subsurface Sample #1(4-6') < 0.14 0.45 DA-SX11SL99229 11/18/99 Subsurface Sample #1(0-3') < 0.11 0.35 SXIISL99233 11/18/99 Subsurface Sample #2 (0-31) <0.12 0.33 SX1M1SL99230 11/18/99 Subsurface Sample #4(0-4) <0.3 0.21 SX10SL99243 11/18/99 Subsurface Sample #38 @1" In 3 Areas (2' Radius) < 0.18 < 0.17 SXIISL99240 11/18/99 Subsurface Sample #26 (4-6')_ <0.17 < 0.16 SX11SL99234 11/18/99 Subsurface Sample #35(04-3') _<0.13 < 0.13 SX 11SL99237 11/18/99 Subsurface Sample #26 (0-4') <0.12 <0.13 SX9SL99228 11/18/99 Subsurface Sample #14 (0-3') <0.2 < 0.12 SX9SL99205 11/18/99 Subsurface Sample #3 (4-6) < 0.1 < 0.11 SX 11SL99231 11/18/99 Subsurface Sample #35 (0-4') < 0.14 < 0.11 sX9SL99242 11/18/99 Subsurface Sample #15 (0-4') <0.14 < 0.1 SX9SL99224 11/18/99 Subsurface Sample #14 (4-5') < 0.11 < 0.08 sX9SL99236 11/18/99 Subsurface Sample #15 (4-5) < 0.09 < 0.06 SX1199239 11/18/99 Subsurface Sample #27 (0-3.5') <0.14 0.97 SX12SL99241 11/18/99 Subsurface Sample #7(0-4') < 0.08 0.22 DA-SX11SL99238 11/18/99 Subsurface Sample #25(0-3) < 0.14 0.2 SX11 SL99238 11/18/99 Subsurface Sample #25 (0-3') < 0.15 0.19 SXI1SL99251 11/19/99 Subsurface Sample #5 (0-1') _<0.14 < 0.2 SXI0SL99246 11/19/99 Subsurface Sample #37 (4-6) < 0.15 < 0.12 SX10SL99244 11/19/99 Subsurface Sample #37 (0-4') < 0.06 < 0.1 SXI0SL99247 11/19/99 Subsurface Sample #39 (0-2') < 0.09 < 0.07 SX9SL99248 11/19/99 Subsurface Sample #36 (0-4') <0.09 1.1 sX9SL99245 11/19/99 Subsurface Sample #36 (4-8') < 0.1 0.69 SX9SL99250 11/19/99 Subsurface Sample #36 (0-6') _ < 0.08 0.44 5

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis Location/Description H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 Ni-63 Eu-It52 SNEC Sample No Date DA-SX9SL99249 11/19/99 Subsurface Sample #36 (8-12') <0.19 0.36 SX9SL99249 11/19/99 Subsurface Sample #36 (8-12') < 0.15 0.33 SX8SD99269 11/19/99 Line Shack Septic Tank (West End) < 0.1 < 0.13 SX8SD99272 11/19/99 Line Shack Septic Tank (East End) < 0.1 < 0.09 SX8SD99271 11/19/99 South Garage Septic Tank (South End)_ <0.3 0.73 SX8SD99270 11/19/99 South Garage Septic Tank (North End) < 0.7 0.52 SX5SD99266 11/22/99 SSPDT Floor Sediment -610' < 0.3 2.3 DA-SXSSD99268 11/22/99 SSPDT Floor Sediment -490' <0.2 2.2 SX5SD99265 11/22/99 SSPDT Floor Sediment -390' < 0.14 2 SX5SD99267 11/22/99 SSPDT Floor Sediment -550' < 0.16 2 SX5SD99268 11/22/99 SSPDT Floor Sediment -490' < 0.2 1.8 SX5SD99264 11/22/99 SSPDT Floor Sediment -670' < 0.2 1.6 SX8SD99273 11/30/99 MHB Floor (Above CV Tunnel) < 0.09 1.3 SX10CW99275 12/2/99 South Garage Terra-cotta Edge of Roof <0.14 < 0.12 SX12SD99286 12/3/99 Sample #17 Discharge Tunnel Outfall < 0.04 < 0.06 SX12SD99280 12/3/99 Sample #18 Discharge Tunnel Outfall < 0.02 < 0.03 SX12SD99281 12/3/99 Sample #19 Discharge Tunnel Outfall < 0.04 0.16 SX12SD99284 12/3/99 Sample #15 Discharge Tunnel Outfall < 0.07 0.078 SX12SD99282 12/3/99 Sample #27 Discharge Tunnel Outfall < 0.05 0.052 SX12SD99287 12/3/99 Sample #13 Shoup's Run Shunt Outfall < 0.11 < 0.12 SX12SD99276 12/3/99 River Sample #2 (South of Entrance to Shoup's Run) < 0.09 < 0.08 SX12SD99279 12/3/99 Sample #11 Shoup's Run Shunt Outfall < 0.07 < 0.06 SX12SD99278 12/3/99 Sample #9 Steam Plant Intake Tunnel Entrance < 0.04 0.11 SX12SD99283 12/3/99 Sample #1 In River South of Entrance to Shoup's Run < 0.05 0.11 SX12SD99277 12/3/99 Sample #21 Weir Discharge Outfall < 0.03 0.41 SX12SD99285 12/3/99 Sample #22 Weir Discharge Outfall < 0.05 0.38 SXSM00314 1/24/00 Garage Steam Pipe Smear Composite <7 15 SX10SL00320 3/27/00 Sediment - Westinghouse Lab Pad Drain Une Composfte _0.067 6.8 9.20E-02 < 0.07 < 0.08 SXIOSLOO319 3/28/00 Subsurface Soil - SSGS Intake Screen Area, AV-138 @ 18' Depth < 0.02 0.33 SXGWG16 4/19/00 CV Pipe Tunnel Water Sample (April119, 2000)_ <3 7 SX10GWO0321 4/25/00 Sediment Phase - SSGS East Sump @C25', AVI183, Well #1 <3 85 8.80E-02 < 0.03 < 0.04 SX10GWO0321 4/25/00 Water Phase - SSGS East Sump @ 25', AV183, Well #1 < 120 <6 53 SX105LOO329 4/25/00 SSGS Footprint AV-134, 0'-3', Well #2 < 0.03 < 0.05 1.5 < 0.1 < 0.0014 < 0.006 < 0.3 SX10SL00331 4/26/00 SSGS FootprtintAT-139, 9'-12', Well#4 < 0.018 < 0.05 0.33 < 0.02 < 0.0015 < 0.005 < 0.4 SX10SL00334 4/26/00 SSGS Footprint AT-139 @ 6' < 0.02 < 0.05 0.27 < 0.02 < 0.007 < 0.005 < 0.6 SX10SL00337 4/27/00 SSGS Footprint AW-132 @ 21', Well #3 < 0.03 < 0.04 0.47 < 0.009 < 0.002 < 0.006 < 0.6 SX9SL00339 5/2/00 Grid F-8 @ 809' El. (SMPRQ Soil001) < 0.015 < 0.07 43 < 0.016 < 0.007 < 0.006 < 0.4 SX9SL00342 5/4/00 CV Yard G-8 Loc. # 12/Truck #7 (SMPRQ S61001) < 0.014 < 0.06 5 < 0.03 < 0.007 < 0.006 < 0.4 SX9SL00340 5/4/00 CV Yard G-8 Loc. # 12 (SMPRQ Soil001) _ I_<0.018 < 0.13 3.2 < 0.03 <0.0013 < 0.006 < 0.3 5/21/2002 6

pCi/g (Solids) or pCi/I (liquid)

Analysis Location[Description H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 NI-63 Eu-152 SNEC Sample No Date SX9SL00341 5/4/00 CV Yard F-7, Lco.# 11-9 (SMPRQ Soil001) < 30 < 0.03 < 0.0248 1.55 < 0.06 <0.2 < 0.09 <60 < 0.6 <9 < 0.0556 SX9SL00343 5/8/00 CV Yard F-7, Loc.# 2, Truck R-2 (SMPRQ SoilO01) < 40 < 0.07 0.175 210 < 0.1 < 0.2 < 0.1 < 80 <2 < 20 < 0.144 SXSD344 5/10/00 SSGS Tunnel 18" Pipe, Sample From Robotic Entry < 0.015 1.4 < 0.6 < 0.01 < 0.04 SX13DW00345 5/10/00 SSGS Tunnel 21" Pipe Water < 120 _ 1_1_1 SX9SL00347 5/16/00 CV Yard Grid# F-8 AY-129, (SMPRQ SoiIOO1) < 50 < 0.07 0.104 612 < 0.08 < 0.08 < 0.08 < 60 < 0.5 <10 < 0.0898

$X9SL00363 5/17/00 CV Yard R-2-4 (G-8) AZ-129 (SMPRQ SoilO01) 110 < 0.06 0.0842 555 < 0.06 < 0.07 < 0.1 < 50 < 0.4 <8 < 0.0656 SX9SL00364 5/18/00 CV Yard Truck 18-2 (SMPRQ SoilO01) < 0.016 < 0.05 < 0.07 < 0.1 < 0.002 < 0.006 < 0.5 SX13SDO0365D 5/24/00 SSGS DT 18" Line < 0.02 < 0.07 3.1 < 0.03 < 0.007 < 0.007 < 0.6 SX13SD00365 5/24/00 SSGS DT 18" Une < 0.019 < 0.07 3 < 0.07 < 0.01 < 0.007 < 0.7 SX10SD00366 6/5/00 SSGS Footprint East Turbine Sump Area AV-133 (Pumped) < 90 < 0.06 0.37 97.8 < 0.2 < 0.2 < 0.2 < 100 <2 < 20 < 0.18 SXIOSDO0367 6/5/00 SSGS Footprint West Turbine SumpArea AV-134 (Pumped) < 0.02 < 0.2 6.7 < 0.13 < 0.007 < 0.012 < 1.5 SX10SD00368 6/6/00 SSGS Footprint Collection Tank Area AW-132 (Pumped) < 0.02 < 0.2 5.5 < 0.04 < 0.015 < 0.016 < 1.8 SX10SD00369 6/8/00 SSGS Footprint in Intake Tunnel AT-139 (Pumped) < 30 < 0.05 < 0.151 0.22 < 0.2 < 0.1 < 0.1 < 100 1.8 < 20 < 0.187 SX-SM-HAP37 7/24/00 HAP-37 Smears, 18" Wall in Primary (AREA 2) 779' El. 14 1300 0.82 0.15 0.35 SX-SM-HAP8 7/25/00 HAP-8 Smears, 18" Wall in Storage Well (AREA 6) 55 14000 15 1.8 4.7 SNEC -ST-100 7/26/00 Discharge Tunnel Water - 100' Down Tunnel < 120 < 1.2 SNEC-ST-2 7/26/00 Discharge Tunnel Water - Seal Chamber #2 < 120 <1 SNEC-ST-1 7/26/00 Discharge Tunnel Water - Seal Chamber #1 < 120 < 1 SNEC-ST-3 7/26/00 Discharge Tunnel Water - Seal Chamber #3 < 120 < 1.6 SNEC -ST-160 7/26/00 Discharge Tunnel Water - 160' Down Tunnel < 120 < 1.3 SNEC-ST-40 7/27/00 Discharge Tunnel Water - 40' Down Tunnel < 120 < 1.3 SX-WA-LADDER 8/21/00 Discharge Water, SSGS DT@ Ladder-5'Vin < 1700 < 14 <15 SX-WA-CHAM2 8/21/00 Discharge Water, SSGS DT Chamber #2 < 1700 < 15 < 14 SX-WA-CHAM1 8/21/00 Discharge Water, SSGS DT Chamber #1 < 1700 < 15 < 12 SX-WA-TUN130 8/21/00 Discharge Water, SSGS DT @ 130' < 1700 <14 <11 SX-WA-TUN320 8/21/00 Discharge Water, SSGS DT Q@320' < 1700 < 14 <11 SX-WA-CHAM3 8/21/00 Discharge Water, SSGS DT Chamber #3 < 1700 < 60 18 SX-SD-00-410 8/24/00 SSGS Footprint, Well # 7 Pumped Sediment 1.5 77 < 0.07 < 0.3 < 0.17 SX-WA-CV-WEST 9/13/00 CV Tunnel Water < 13 < 16 SX-WA-CV-EAST 9/13/00 CV Tunnel Water < 11 < 13 9/26/00 HAP # 5, CV Concrete Material, Rx Cavity, 18" Wall-NW 259.3 <4.93 52.2 2510 1.18 0.051 0.119 1.97 85.5 _ <2.99 9/26/00 HAP # 11, CV Concrete Material, RxCavity -798' El, 18" Wall-North 165.7 < 5.3 17.1 597 0.859 0.031 0.039 < 0.757 51.07 < 2.33 9/26/00 HAP # 46, CV Concrete Material, 797' El., Primary North 5' Wall 371.6 < 5.04 3.95 275 0.018 < 0.011 < 0.008 4.17 74.5 < 2.33

1. 6386 11/22/00 SSGS Soil Bag#05 < 10.9 < 0.54 0.4 11.4 < 0.008 < 0.029 < 0.02 < 3.26 < 5.85 < 8.7 < 0.03 SX01CW00637 12/14/00 SNEC CV, Composite Concrete Samples AN-1, 2 &3 190.6 < 0.07 58.5 0.55 < 0.91 < 0.58 31.0 114.7 < 0.39 SX01CW00640 12/14/00 Composite Core Bore Wafers- 518.6 < 0.08 27.7 < 1.45 < 1.2 < 0.57 10.07 98.4 < 0.26 SX01CW00638 12/14/00 SNEC CV Composite Concrete Samples PO-1 &PO-8 225.3 < 0.07 11.1 < 0.46 < 0.52 < 0.61 23.5 67.5 < 0.21 SXO1CW00636 12/14/00 SNEC CV Concrete, AO-18 66.6 < 0.09 5.08 < 1.27 < 1.06 < 0.39 46.8 22.4 < 0.18 SX01CW00574 12/14/00 SNEC CV Rod Room Concrete 40.9 0.04 1.37 < 1.19 < 1.2 < 0.78 275.0 33.6 0.1 SX01CW00626 12/14/00 SNEC CV Basement Sump Concrete 270.9 1<0.080.55 1.08 < 0.49 < 0.77 39.7 90.3 < 0.13 7

5/21/2002

pCi/g (Solids) or pCi/I (liquid)

Analysis SNEC Sample No Date Location/Descrlption H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 N1-63 Eu-152 SX02CW00639 12/14/00 SNEC CV Concrete PE-1 376.2 < 0.07 0.21 < 0.37 < 0.4 < 0.4 28.8 80.4 < 0.12

1. 6550 1/10/01 4th Quarter Liquid Composite -Water < 571 < 0.9 CV Tunnel 2/14/01 CVTunneltSediment Composite < 9.4 9.67 1.26 1250 < 0.18 < 0.55 <0.22 < 44.69 < 9.34 < 4.02 < 0.13 SXSD721 2/15/01 SSGS North Sump < 12.7 < 0.01 0.07 2.55 < 0.004 < 0.004 < 0.003 < 0.478 < 4.13 < 7.26 <0.07 SXSD723 2/20/01 SSGS SE Sump, AU-133, SR-0003 < 12.1 < 0.02 0.54 159 < 0.014 < 0.003 < 0.004 < 0.562 < 4.07 < 7.2 < 0.04 SXCW735 3/6/01 SSGS Tunnel, North Wall - 5'-8" From Floor < 10.3 < 0.03 < 0.07 22.6 < 0.044 < 0.047 < 0.044 < 6.57 < 3.96 < 7.88 < 0.33 SXSD744 3/21/01 SSGS Mezzanine, East, SR-0004 < 123 < 0.18 2.26 39.6 < 0.709 < 0,33 < 0.33 < 50.8 < 37.9 < 82.6 < 1.46 SX9SL01746-#6889 3/26/01 North CV Yard Area Soil Bag*#34L < 12.29 0.27 1.31 5.04 0.07 0.02 0.04 < 1.23 < 4.21 < 1.29 < 0.23 OW-3R 4/25/01 Groundwater Level Well - SE < 600 < 1.05 < 12 < 9.99 < 0.52 < 0.58 < 0.23 < 63.24 < 45.32 < 12.77 < 18.9 OW-S 4/25/01 Groundwater Level Well- NW < 600 < 1.23 < 11.7 < 9.06 < 0.19 < 0.25 < 0.25 < 87.78 < 44.01 < 11.56 < 18.6 OW-4R 4/25/01 Groundwater Level Well- NE < 600 < 0.65 < 9.65 < 8.49 < 0.2 < 0.63 < 0.36 < 56.48 < 44.34 < 13.7 < 15.6 OW-6 4/25/01 Groundwater Level Well - SW < 600 < 0.82 < 9.34 < 7.22 < 0.28 < 0.49 < 0.2 < 54.53 < 46.14 < 9.9 < 15.3 OW-5R 4/25/01 Groundwater Level Well- NW < 600 < 1.3 < 7.19 < 6.91 < 0.32 < 0.34 < 0.37 < 40.03 < 43.79 < 11.11 < 18 OW-3 4/25/01 Groundwater Level Well- SE < 600 < 0.8 < 8.37 < 6.34 < 0.23 < 0.24 < 0.22 < 55.43 < 43.69 < 12.13 < 14 SXSD756 4/25/01 SSGS North Sump Penetration -4" Pipe < 12.2 < 0.05 0.28 4.39 < 0.053 < 0.01 < 0.004 < 0.491 < 3.52 < 7.68 < 0.07 SXCF828 5/4/01 SSGS, East, Disk # 1 < 11.7 < 0.05 2.01 660 0.29 < 0.046 0.145 < 6.819 < 3.68 < 7.73 < 0.31 SXSD923 5/22/01 SSGS Tunnel, Rubble C 700', SR-0008' <11.2 < 0.05 < 0.01 0.15 < 0.006 < 0.003 < 0.003 < 0.549 < 3.43 < 7.02 < 0.05 SX11SD01937 5/24/01 Weir Line 135'Above River Outlet < 45.13 < 0.14 < 0.27 61.59 < 0.04 < 0.05 < 0.04 < 11.75 < 8.02 < 6.25 < 0.77 SXCF971 6/13/01 SSGS SealChamber #2, SR-0013 < 11.8 0.2 < 0.01 1.05 < 0.032 < 0.015 < 0.015 < 2.22 < 3.81 < 7.59 < 0.04 SXCF1098 6/28/01 SSGS Seal Chamber, West End, Disk# 1, SR-0013 < 11.9 < 0.07 < 0.04 < 0.03 < 0.056 < 0.049 < 0.038 < 6.9 < 3.71 < 24.8 < 0.17 SXGWE11 7/2/01 Well Water < 189 < 7.61 < 5.99 < 16.3 SXGWOW7R 7/2/01 Well Water < 0.77 < 0.59 < 1.79 < 1.07 < 317.69 < 53.23 < 68.53 SXGWMW2Q 7/3/01 Well Water < 14.4 < 13.5 < 21.9 SXGWOP3 7/5/01 Well Water < 1.46 < 0.71 < 0.39 < 0.39 < 120.67 < 53.31 < 154.9 SXGWOP4 7/5/01 Wel Water < 0.75 < 0.82 < 0.59 < 0.18 < 60.88 < 52.08 < 73.55 SXGWGIQ1 7/5/01 Well<water < 189 SX9SLO1746-R 7/5/01 Unknown Soil Sample - Gamma Scan Recount 1.26 4.77 < 0.26 SXSD1192 7/17/01 SSGS Footprint, East, SR-0004, NW Sump < 12.5 < 0.09 0.14 11.6 < 0.136 < 0.003 < 0.003 <.559 < 3.83 < 9.08 < 0.06 SXCF1210 7/20/01 SSGS Footprint, Center Section, Core Bore #2, Disk #I1 < 11.8 < 0.06 < 0.04 0.27 < 0.048 < 0.049 < 0.049 < 6.79 < 3.72 < 7.33 < 0.21 SXSL1270 7/26/01 AX-129, 3-3, Soil, CV SE Side < 5' From CV, 800' El. < 11.31 < 0.02 < 0.01 23.1 < 0.037 < 0.007 < 0.007 < 2.104 < 3.93 < 8.68 < 0.07 SXSL1281 7/26/01 AX-128, 3-1, Soil, CVSW Side < 5' From CV, 800' El < 11.52 < 0.03 < 0.01 4.38 < 0.031 < 0.016 < 0.007 < 1.908 <4 < 7.78 < 0.04 SXSD1377 9/4/01 SSGS 790' El., East - Debris From Pump Stand Small Pipe <11 < 0.04 3.98 3130 < 0.11 0.07 0.08 < 4.74 < 4.15 < 8.61 < 0.24 SXSD1472 10/10/01 Weir Site #1, Sediment <10.2 <0.014 0.0201 2.87 <4.89E-03 <3.41E-03 <3.41E-03 <0.96 <4.58 <7.46 <6.24E-02 SXSD1504 10/15/01 River Slte# 1, Sediment <10.1 <0.01 <2.74E-02 0.154 <2.83E-03 <3.48E-03 <3.12E-03 <1.06 <4.82 <6.94 <0.139 SXSD1537 10/17/01 River Sediment Background C Riddlesburg < 9.62 < 0.01 < 1.37E-02 0.0662 < 3.50E-03 < 3.56E-03 < 3.56E-03 < 1.15 < 4.94 < 7.98 < 0.0686 SX-10-SD-00-369 12/24/01 SSGS Footprint In Intake Tunnel AT-i139 (Pumped) <2 SX10SL00363 12/24/01 CV Yard R-2-4 (G-8) AZ-129 (SMPRQ Soil001) 61 SXSD1622 1/17/02 Intake Tunnel Sediment - South -Suction @ 60',QCSampe ple<0.03 < 0.06 2.18 < 0.147 < 0.038 < 0.041 < 4.59 < 0.16 SXSD1998 1/17/02 Intake Tunnel Sediment -North - North Wall/Mid-Seclion @ 05' _ r_ <0.01 < 0.02 2.08 < 0.004 < 0.008 < 0.007 < 0.86 < 0.04 5/21/2002 8

pCVg (Solids) or pCi/I (liquid)

Analysis SNEC Sample No Date Locatlon/Descrlptlon H-3 Sr-90 Co-60 Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 NI-63 Eu-152 Intake Tunnel Sediment - East @ 220' <0.01 < 0.03 0.24 < 0.003 < 0.005 < 0.006 < 0.87 < 0.05 SXSD2232 1/17/02 Intake Tunnel Sediment - South -'Wall Composite 0- 100' <0.02 < 0.04 2.18 < 0.004 < 0.009 < 0.011 < 1.422 < 0.1 SXSD2351 1/17/02 9

5/21/2002

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CALCULATION COVER SHEET (NEPU NUCLEAR I Revision Number

Subject:

Calculation No.

6900-02-008 0 SNEC Facility DCGL Values for Volumetric Contamination DESCRIPTION OF REVISION Signature Date Originator B. Broseyl I Io ,

Reviewer J. P. Donnachie/ ,0 7 Additional Reviewer Additional Reviewer Additional Reviewer Management Approval Cover Page 1A

rsPU Subject NUCLEAR Calculation Sheet Calculation No. Rev. No. Sheet No.

SNEC Facility DCGL Values for Volumetric Contamination 6900-02-008 , / 0 1 of.-3.2!ý Originator Date Reviewed by D2/[J Date Bar rsyFebruary

. 5, 2002 Pat Donnachie )W I /'

1.0 PROBLEM STATEMENT The purpose of this calculation is to determine SNEC Facility site Derived Concentration Guideline Levels (DCGLs) for volumetric contamination. These calculated DCGL values are determined using the dose modeling computer code RESRAD, version 6.1. The code offers a probabilistic calculation option which was used to develop these values and their applicable Area Factors for all relevant site radionuclides.

2.0

SUMMARY

OF RESULTS A Table of summarized results is presented in Attachments 1-1.

3.0 REFERENCES

3.1 SNEC Site Characterization Report, GPU Nuclear, 1996.

3.2 "Summary for RESRAD Parameters Inputs (Revision 1), Dated October 18, 2001, from Haley &

Aldrich, Incorporated of 150 Mineral Spring Drive, Dover, New Jersey (Underground Engineering

& Environmental Solutions), 07801-1635 to J. Patrick Donnachie of GPU Nuclear.

3.3 ANL/EAIS-8, "Data Collection handbook to Support Modeling the Impacts of Radioactive Material in Soil", Environmental Assessment and Information Sciences Division, Argonne National Laboratory, US DOE, April 1993.

3.4 Argonne National Laboratory Report, "KI Study of Site Soils and Construction Debris from the SNEC Decommissioning Project", February 2002.

3.5 Rogers & Associates Engineering Branch, URS Corporation, "Calculation of Sub-Surface DCGLs for the Saxton Nuclear Experimental Corporation Site", RAE-42613-003-5030-2, January 29, 2002.

3.6 Microsoft Excel 97, Microsoft Corporation Inc., SR-2, 1985-1997.

4.0 ASSUMPTIONS AND BASIC DATA 4.1 While Cs-137 is the predominant radionuclide present at the SNEC Facility produced during plant operation, other radionuclides of lower concentration have been detected. This calculation determines applicable guideline levels (DCGL) for all twenty six (26) radionuclides shown in the following Table.

TABLE 1 - Radionuclides Present at the SNEC Facility Am-241 C-14 Cm-243 Cm-244 Co-60 Cs-134 Cs-137 Eu-152 Eu-154 Eu-155 Fe-55 H-3 Nb-94 Ni-59 Ni-63 Pu-238 Pu-239 Pu-240 Pu-241 U-235 I Pu-242 U-2 Sb-125 Sr-90 Tc-99 U-234 NOTE 1: Np-237 has not been detected to date greater than MDA and therefore was not included.

NOTE 2: Table I radionuclides have been positively detected in samples from the SNEC Facility as reported in the SNEC "Site Characterization Report"(Reference 3. I).

NUCLEAR 4.2 Input for the RESRAD dose modeling computer code re~ires numerous grLmdwater hydrology by Haley & Aldrich, and geological parameters. Many of these parameters have been determined from Haley & Aldrich Incorporated for the SNEC site (Reference 3.2). The summary report for the SNEC site. This includes the latest groundwater hydrology and geological information summary report is information has been used as input to the RESRAD code. The Haley & Aldrich Attachment 2 of this calculation.

determine distribution 4.3 Argonne National Laboratories (ANL) was contracted by GPU Nuclear to site. Kd values are the coefficients (Kd) for soils and construction debris from the SNEC Facility per unit of dry mass of ratio of the mass of the solute species absorbed or precipitated on the solids The values ANL has the soil, S, to the solute concentration in the liquids, C (Reference 3.3).

flyash as well as soils provided were for a group of sample types including construction debris and materials is shown and bedrock from the site. The analysis results of the ANL study of SNEC site in Attachment 3-1.

RESRAD computer 4.4 For purposes of this calculation only one set of Kd values were input into the provided by ANL code. The Kd values selected were the lowest values determined for all data of the sample from (Reference 3.4). for each element type (or representative element), regardless Kd value was to allow GPU which they came. The reason for the selection of the lowest reported in any surface or Nuclear to calculate DCGLs for each radionuclide that could then be used subsurface site location regardless of material type.

of soil layer.

4.5 This calculation models SNEC site surface materials located within the upper 1 meter A basic 10,000 The model was assumed to be a 1 meter thick contaminated zone without cover.

input parameters are square meter contaminated area is assumed for the site surface model. Basic included in Attachment 4-1 through 4-4.

performed by URS 4.6 The determination of subsurface DCGL for the SNEC Facility has been results are Corporation of 756 East Winchester Street, Suit 400, Salt Lake City, Utah. Their Facility will ultimately employ summarized in Attachment 5-1 (see Reference 3.5). The SNEC and/or subsurface the most appropriate DCGL values for site areas as selected from the surface and are modeling effort. The lowest DCGL values from both these models have been combined listed in Chapter 5 of the SNEC Facility License Termination Plan (LTP).

case model the 4.7 Area factors are developed from the surface modeling parameters. In the base to be equal to one (1) using the contaminated fraction of plant, meat and milk products is assumed for area sizes resident farmer scenario. Default values of-1 are substituted for these three variables size the less than 10,000 square meters. The three default parameters (-1) appropriately from the site when smaller and smaller contaminated fractions of plants, meat and milk obtained area sizes are input into the REARAD computer code.

using the 4.8 The most apparently sensitive RESRAD input parameters have been determined runs of the base case sensitivity analysis feature of the RESRAD computer code and by multiple significantly model with varying input values. The following list of parameters appear to more all radionuclides are sensitive to the same impact calculated dose values for Cs-137. However, not parameter changes.

NUCLEAR Calculation Sheet Subject Calculation No. Rev. No. SheetNo SNEC Facility DCGL Values for Volumetric Contamination 6900-02-008 0 3 of Originator Date Reviewed by Date Barry H. Brosey . -*- February 5, 2002 Pat Donnachie ,

TABLE 2 - MOST SENSITIVE RESRAD PAA ERS, Cs-137 (As Determined By RESRAD Sensitivity Analysis)

TEDE %of 26 Drinking Water  % of 4 Rage of Dose Rate mrem/y Range of Dose Rate mremly Radionuclide Parameter Range of Input mrmMVy Limit mrenvy Limit Cs-137 Indoor Time Fraction 0.25 1 2-14 3.74 6.40% 0 0 0.00%

External Gamma Shielding Factor 0.4895 1 2.197 3.13 3.73% 0 0 0.00%

Livestock Fodder Intake for Meat 34 136 2.34 2.75 1.64% 0 0 0.00%

.Thickness of Contaminated Zone 0.5 2 2.34 2.67 1.32% 0 0 0.00%

Contaminated Fraction of Meat 0.0625 1 2.36 2.67 1.24% 0 0 0.00%

Contaminated Fraction of Plant Food 0.0625 1 2.43 2.66 0.02% 0 0 0.00%

Depth of Roots 0.4500 1.8 2-21 2.44 0.02% 0 0 0.00%

Contaminated Fraction of Milk 0.0625 1 2.21 2.44 0.02% 0 0 0.00%

_Contaminated Fraction of Milk 0.0625 1 2.45 2.67 0.88% 0 0 0.00%

Contaminated Fraction of Meat 0.125 0.5 2.4 2.5 0.40% 0 0 0.00%

Milk Consumption 116.5 466 2.45 2.55 0.40% 0 0 0.00%

.. Livestock Fodder Intake for Milk 27.5 110 2.45 2.55 0.40% 0 0 0.00%

Fruit, Vegetable, and Grain

._ Consumption 56 224 2.45 2-5 0.20% 0 0 0.00%

._ Leafy Vegetable Consumption 10.7 42.8 2-45 2.5 0.20% 0 0 0.00%

.. Meat and Poultry Consumption 33.5 134 2.45 2.5 0.20% 0 0 0.00%

.. Area of Contaminated Zone 5000 20000 2.64 2.68 0.16% 0 0 0.00%

NOTE: Zeros in the above dose columns do not mean zero dose was calculated. When there was no net change in the dose as a result of varying input parameters. no results were input to Tables 2 or 3.

In Table 3 below, Am-241 was the selected radionuclide. Parameter changes cause somewhat different dose change results depending on the dose of concern. For the SNEC Facility, both the 25 mrem/y TEDE limit and the 4 mrem/y drinking water dose goal are important. Therefore, the most sensitive parameters listing should include parameters from both categories.

GC**U (2IrIII+/-tinn Sheet Rev. No. Sheet No.

Subject calculation No.

SNEC Facility DCGL Values for Volumetric Contamination 6900-02-008 A 0 4 of Originator Date Reviewed by e Barry H. Brosey * .- W"-----. February 5, 2002 Pat Donnachie TABLE 3 - MOST SENSITIVE RESRAD PARAMETR, Am-241 (As Determined By RESRAD Sensitivity Analysis)

TEDE Drinking Water Range of Dose  % of 26 Rangeof Dose Rate  % of 4 Range of Input Rate mwere/yl mreri/y . mwemY Limit Radionuclide Parameter Fruit, Vegetable, and Grain 56 224 0.377 0.992 2A6% 0 0 0.00%

Am-241 Consumption 0.0625 1 0.123 0.577 1.82% 0 0 0.00%

Contaminated Fraction of Plant Food Thickness of Contaminated Zone 0.5 2 0.368 0.582 0.68% 4.79E-03 6.11 E-03 0.03%

10.7 42.8 0.542 0.663 0OA% 0 0 0.00%

.. Leafy Vegetable Consumption 0.2045 3.96 0.123 0.213 0.36% 0 0 0.00%

.. Depth of Roots 0.25 1 0.553 0.632 0.32% 0 0 0.00%

.. Indoor Time Fraction 9.13125 36.525 0.558 0.632 0.30% 0 0 0.00%

.. Soil Ingestion 0.125 0.5 0.558 0.613 0.22% 0 0 0.00%

Outdoor Time Fraction 0.00005 0.0002 0.568 0.591 0.09% 0 0 0.00%

Mass Loading for Inhalation 4200 16800 0.568 0.59 0.09% 0 0 0.00%

Inhalation Rate 33.5 134 0.5T7 0.591 0.06% 0 0 0.00%

Meat and Poultry Consumption 0.2 0.8 0.573 0.582 0.04% 0 0 0.00%

Inhalation Shielding Factor 0.0625 1 0.212 0.219 0.03% 0 0 0.00%

Contaminated Fraction of Meat 0.349 0.997 0 0 0.00% 1.56E-02 0 0.39%

.. Evapotranspiration Coefficient 10 90 0 0 0.00% 1.87E-03 1.68E-02 0.37%

Well Pump Intake Depth 0.8 3.2 0 0 0.00% 0.001 0.013 0.30%

.. Density of Unsaturated Zone Thickness of Unsaturated Zone 0.125 0.5 0 0 0.00% 0.001 0.013 0.30%

500 2000 0 0 0.00% 9.47E-04 1.29E-02 0.30%

.. Unsaturated Zone Kd n n 1 1 00129) 0.30%

S.... ........... _ , n

.. Total P'orosity of Unsaturated Zone u=o vo , vw* ... .. ...

Effective Porosity of Unsaturated Zone 0.205 0.82 0 0 0.00% 0.001 0.0129 0.30%

__ Saturated Zone Total Porosity 0.18 0.72 0 0 0.00% 0.0028 0.013 0.26%

._ Drinking Water Intake 239.25 957 0 0 0.00% 0.00286 0.0113 0.21%

5.09E-03 0.154 0 0 0.00% 3.OOE-03 1.10E-02 0.20%

.. Saturated Zone Effective Porosity 500 2000 0 0 0.00% 0.003 0.011 0.20%

Saturated Zone Kd 0.659 1.329 0 0 0.00% 2.46E-03 1.00E-02 0.19%

Precipitation Rate Contaminated Zone Kd 500 2000 0 0 0.00% 0.003 0.0105 0.19%

0.175 0.7 0 0 0.00% 1.24E-03 8.52E-03 0.19%

Run Off Coefficient Density of Saturated Zone 1.07 2.4 0 0 0.00% 3.73E-03 8.47E-03 0.12%

Contaminated Zone Erosion Rate 0.0001725 0.00069 0 0 0.00% 5.05E-03 5.95E-03 0.02%

In a general sense, the following Table 4 values have the potential for the largest changes in dose of either kind for most radionuclides. Individual radionuclides should be evaluated on a case by case basis to determine the parameter changes with the highest impact for that radionuclide.

( Nt GUNUCLEAR Calculation Sheet Subject Calculation No. Rev. No. Sheet No.

SNEC Facility DCGL Values for Volumetric Contamination 6900-02-008 0 5 of...

Originator -ý -Date Reviewed by ate Barry H. Brosey -z UX February 5, 2002 Pat Donnachie

/1I l I Table 4, Parameters Significantly Impac "jgDose '1 Thickness of Contaminated Zone Indoor Time Fraction Contaminated Zone Erosion Rate Run Off Coefficient Extemal Gamma Shielding Factor Watershed Area for Nearby Stream or Pond Fruit, Vegetable, and Grain Consumption Contaminated Fraction of Plant Food Evapotranspiration Coefficient Well Pump Intake Depth Thickness of Unsaturated Zone Contaminated Zone Kd Saturated Zone Kd Unsaturated Zone Kd External Gamma Shielding Factor Uvestock Fodder Intake for Meat Contaminated Fraction of Plant Food Contaminated Fraction of Meat Depth of Roots Leafy Vegetable Consumption NOTE: Not shown in any ranked order.

4.9 Kd values are not (excepting 3H & 14 C) included in the RESRAD probabilistic analysis. Instead, the lowest empirically derived Kd value was used as the input for each radionuclide. An assigned range around the ANL postulated Kd values for 3H & 14C has been included in the probabilistic RESRAD analysis (see Attachments 4-2 & 4-3).

4.10 Several parameters appear to have no impact on dose for any SNEC radionuclide. These parameters are shown in the following Table, and were not included in the probabilistic analysis.

TABLE 5 - SOME OF THE LEAST SENSITIVE RESRAD PARAMETERS (As Determined By RESRAD 6.1 Sensitivity Analysis)

Parameter Average Annual Wind Speed Contaminated Zone Parameter b Contaminated Zone Field Capacity Saturated Zone Field Capacity Well Pumping Rate Unsaturated Zone Parameter b Unsaturated Zone Field Capacity Wet Crop Yield for Fodder

(NpU NUCLEAR Calculation Sheet Calculation No. Rev. No. Sheet No.

Subject 6900-02-008 0 16 of...*-h SNEC Facility DCGL Values for Volumetric Contar riination Originator Date Reviewed by te IBarry H. Brosey f

ZR ,- -T,' February 5, 2002 Pat Donnachie 4-*

4.11 Area Factor development was performed using the pro1 ilistic RESRAD o ion. As discussed previously, a default value of-1 was substituted for the contamination fractions for Plant, Meat &

RESRAD could scale smaller contaminated areas (10,000 M2, Milk food. This was done so that 2,500 m2, 400 in 2 , 100 m 2, 25 m2 and I m 2). See Attachments 6-1 to 6-3.

4.12 In addition to computer runs for Area Faciors and the 25 mrem/y dose limit, a drinking water RESRAD run was also performed for each radionuclide using only the drinking water option from the pathways options listing. All results are provided on page 23 of the RESRAD uncertainty report "MCSUMMAR.REP". Page 23 for all probabilistic output has been included in Attachments 7-1 to 7-182. The summary spreadsheet table for these runs is provided in Attachments 8-1. The RESRAD computer file names on these attachments are organized as in the following example:

"* AM241.RAD = 25 mrem/y TEDE, 10,000 m 2 area dose

"* AM241 DW.RAD = 4 mrem/y drinking water, 10,000 m 2 area dose

"* AM241A.RAD = 25 mrern/y TEDE, 2500 m 2 area dose 2

"* AM241B.RAD = 25 mrem/y TEDE, 400 mn area dose

"* AM241C.RAD = 25 mrem/y TEDE, 100 m 2 area dose

"* AM241D.RAD = 25 mrem/y TEDE, 25 m2 area dose

"* AM241E.RAD = 25 mrem/y TEDE, I m2 area dose 4.13 The complete probabilistic output file for Cs-137 named MCSUMMAR.REP, is shown as an example of all probabilistic output files in Attachment 9-1 through 9-61.

4.14 The deterministic run containing all radionuclides and associated input parameters is presented in Attachment 10-1 through 10-50. However, each radionuclide was run separately to obtain the deterministic values shown on Attachment 11-1.

5.0 CALCULATIONS 5.1 All calculations are performed using an Excel spreadsheet or are internal to the RESRAD 6.1 computer code. A "Read Only" CD ROM is provided with this calculation containing all RESRAD computer generated input & output files.

6.0 LIST OF ATTACHMENTS 6.1 Attachment 1-1, Summary Table of RESRAD output results.

6.2 Attachment 2- to 2-13, Haley & Aldrich communication (Reference 3.2).

6.3 Attachments 3-1, Summary Table of ANL provided Kd values (Reference 3.3).

6.4 Attachment 4-1 and 4-4, RESRAD input values for probabilistic & deterministic analysis.

6.5 Attachment 5-1, Summary Table of URS developed sub-surface DCGLs (Reference 3.5).

6.6 Attachment 6-1 to 6-3, Area Factor summary Table and individual radionuclide results.

rGPU NUCLEAR Calculation Sheet Subject [Calculation No. Rev. No. Sheet No.

SNEC Facility DCGL Values for Volumetric Contamination 6900-02-008 0 0 7 of 3,*2*'

Originator ryDate Reviewed by OI, ate Barry H. Brosey February 5,2002 Pat Donnachie 4 ci ,

6.7 Attachments 7-1 to 7-182, Probabilistic output results for dividual radionuclide for 10,000 n 2 ,

2500 in2 , 400 m2 , 100 mn2 , 25 m2 and 1 mn 2

area sizes. Also, includes the drinking water dose for 10,000 mn areas.

6.8 Attachment 8-1, Summary Table of probabilistic results for each SNEC radionuclide.

6.9 Attachment 9-1 and 9-61, RESRAD probabilistic report for Cs-137.

6.10 Attachment 10-1 and 10-50, Deterministic output result for an all radionuclide input run.

6.11 Attachment 11-1, Summary Table of all deterministic results for each SNEC radionuclide.

rT-SUBSURFACE (Below -1 Meter)

SURFACE (Upper -1 Meter) SNEC RESRAD 6.1 Probabilistic DCGL's (pCII9)

SNEC RESRAD 6.1 ProbabIISUC UCGL s pI.....

. Innll:= ru.D*)

January-02 _ _ _....._1 . .

Based on DCGL 25 mrem/y, All Based on DCGL 4Stanar MINIMUM SITE Pathwav Standard Drinking.WaterStandard DCGI-s S. . ...... *A n1. n '.L.11 25 mrem/y Limit Peak Dose Year(s) 4 mrem*y Dw Limit P'eon ose TUa, .... . 1 0 196 758.6-1000 18 45 18 Am-241 21.4 31 27 27 0 1038 1-3 89 C-14 970 25 25 0 1949 525 120 Cm-243 560 39 39 0 868 525 180 Cm-244 3.9 0 9.44E+05 13.18- 19.05 21 4.IE+04 Co-60 3.9 5.1 0 3.01E+09 3-9.12 29 5.6E+15 (> SA Limit)

Cs-134 5.1 1.93E+07 83.2 51 9.4E+05 8.7 Cs-137 8.7 0 1.24E+08 35- 57.54 54 3.9E+06 10.8 Eu-1 52 10.8 0 2.10E+08 27.54 - 39.81 50 9.8E+06 10 Eu-154 10 0 4.80E+09 19.05- 27.54 2100 7.7E+08 415 Eu-155 415 0 8.23E+13 13.18-39.81 1.7E+05 7.6E+22 (> SA Limit) 2,3E+04 Fe-55 2.3E+04 0 1461 2.089 8600 1400 1400 H-3 2730 0 529 251 38 370 7.6 Nb-94 7.6 0 4.74E+05 2291-3311 1.7.E+04 2.1E+05 3216 NI-59 3216 0 0 3.48E+07 251.2-300 6300 2.5E+06 1175 NI-63 1175 0 21.5 174 42 6.7 6.7 Pu-238 24.1 9.2 363.1 2.2 525 9.4 1.5 1.5 Pu-239 9.5 363.1 2.3 5.25E+02 9.7 1.6 1.6 Pu-240 1021 27.54-35 3889 758.6-1000 3400 1100 1021 Pu-241 Pu-242 9.6 363.1 2.3 525 9.7 1.6 1.6 Sb-125 33.6 0 1.15E+07 6.31-9.12 100 16 16 Sr-90 1.3 0 6.7 27.5 7 4.2 1.3 Tc-99 11.4 0 46.6 4.4 54 33 11.4 U-234 12.6 39.81 - 57.54 2.7 5.75E+01 12 1.9 1.9 U-235 12 39.81 - 57.54 2.8 57.5 12 1.9 1.9 U-238 13 39.81 - 57.54 2.9 5.75E+01 12 2 2 NOTE: Values In BLUE represent the lowest calculatedvalue (25 mremly iTED limit vs the 4 mremiy drinking water umwD.

I Z Yellow highlighted radionuclidesare drinking water dose contributors.

ATTACHMENT -1..1:.

? e*ol Zoa--pu/'0 Ad:u o u J l;E - /g/iASOelj. 9N jo 96e8ej .0A98J900-ZO0O069 ON uoileirfl3e6oJuo!euiweluo oIulewfloA JOJ salB eaAVIE)(ý!Pe- ONS

UNDERGROUND ENGINEERING &

ENVIRONMENTAL SOLUTIONS Haley & Aldrich, Inc.

150 Mineral Spring Drive Dover, NJ 07801-1635 Tel: 973.361.3600 Fax: 973.361.3800 HAEY 18 October 2001 File No. 74683-000 www.HalevAldrich.com GPU Nuclear, Inc.

Route 441 South Post Office Box 480 Middletown, PA 17057-0480 Attention: Mr. J. Patrick Donnachie

Subject:

Summary for RESRAD Parameters Inputs (Revision 1) wam c0

Dear Mr. Donnachie:

.3~ As we discussed, the attached document presents the summary for an updated version of r

RESRAD (Revision 1) containing revised inputs which were identified in our 12 September 2001 report.

The primary reason for the revisions is that recent supplemental field investigations provided site-specific information. These recent reports which were a follow-up to these field

< OFFICES investigations are noted in Section I of the attachment while the recommended inputs for SBoston RESRAD SMassachusettsare incorporated into Section II.

, Cleveland Figure 1, which accompanied our 12 September 2001 is also attached and replaces Figure 1 0 Ohio W Davton that was included with the initial RESRAD parameter inputs.

Ohio Figure 1 provides a generalized sketch of subsurface conditions. In the center column, P Denver subsurface materials are identified (labeled geologic), while hydrogeologic and RESRAD "C) C-olorado considerations are presented in the left and right columns respectively. Regarding specific 0 0 Detroit inputs to RESRAD, in some instances revisions were made to total porosity, effective 9D Michigan porosity, field capacity, hydraulic gradient, hydraulic conductivity and other related 0 0 o= Hartford parameters.

0 L..212?ectzc1Lt Cb c,, Ls -Angeles In Figure 1, under the geologic heading, three subsurface materials are noted: Fill (A),

-71?1iforntza Boulder layer (overburden) unit B and the Siltstone bedrock (C). The interface between the

' Manchester base of the boulder layer and the bedrock (B/C) is also characterized in our 12 September CSNew :-Iaznsazre 2001 report.

7- M Torttana

_v'lamre Based on our 12 September 2001 report we recommended the following consiJerations for 0'

-vRocnester RESRAD. The Fill (A) unit is unsaturated throughout most of the hydrologic year and

(@ -ew L'?oK contains the contaminated zone. The Boulder layer (overburden) unit (B) a feature H an -Diego associated with the rivers depositional processes, is saturated, however, due to its low STucson Nr iasrizotia

/'asningtonI ?i~r?

ATrACHMENT Z - 1_

GPU Nuclear, Inc.

18 October 2001 Page 2 permeability serves as a hydraulic barrier to flow between the Fill and the underlying Siltstone bedrock. Regarding the saturated interface (B/C) between the Boulder layer (B) and the underlying saturated Siltstone bedrock (C) we recommend using inputs for the bedrock, since the aquifer testing results for hydraulic conductivity for both units are similar (the same order of magnitude). The saturated thickness of the bedrock is much thicker than the interface layer.

If you have any questions regarding Revision 1, please contact us.

Sincerely yours, HALEY & ALDRICH, INC.

0wcn-n Charles R. Butts, P.G.

CC-,

0 Enclosures r

c: Mr. Art Paynter Mr. Barry Brosey 2D 0 G:\documents\74\74683\74683mO7.doc 0

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IHALEY&

JALDRICH

.M ATT.ACHMENT LfZ 2'

The preceding cover letter dated October 18, 2001 provides a brief introduction and overview to this attachment (referred to as Revision 1). This revision contains some new inputs to RESRAD for the SNEC facility, based on the results of supplemental subsurface information from recent site investigations. Revisions have been made in some cases to total porosity, effective porosity, field capacity, hydraulic gradient and hydraulic conductivity and other related parameters.

RESRAD Input Parameters:

R013 Cover depth (m)

R013 Density of cover material (g/cm 3)

R013 Cover depth erosion rate (m/yr)

R013 Density of contaminated zone (g/cm 3)

R013 Contaminated zone erosion rate (m/yr)

R013 Contaminated zone total porosity R013 Contaminated zone effective porosity R013 Contaminated zone hydraulic conductivity (m/yr)

Z mR013 Contaminated zone b parameter 0 R013 Average annual wind speed (misec)

5. R013 Humidity in air (g/m 3 )

R013 Evapotranspiration coefficient R013 Precipitation (m/yr)

Irrigation (m/vr)

< R013 Irrigation mode R013 Runoff coefficient r R013 Watershed area for nearby stream or pond (M2 )

0 R014 Density of saturated zone (g/cm 3)

R014 Saturated zone total porosity M R014 Saturated zone tota porosity o R014 Saturated zone effective porosity 0 R014 Saturated zone hydraulic conductivity (m/yr)

R014 Saturated zone hydraulic gradient R014 Saturated zone b parameter 0 . R014 Water table drop rate (m/yr)

R014 Well pump intake depth (m below water table)

_ R014 Model: nondispersion (ND) or Mass-balance (MB) 0 R014 Well pumping rate (m3/yr) 0 M

" R015 Number of unsaturated zone strata SR R015 Unsaturated zone 1, thickness (m)

CD R015 Unsaturated zone 1, soil density (gicm3) r R015 Unsaturated zone 1, total porosity RO15 Unsaturated zone 1, effective porosity R015 Unsaturated zone 1, soil-specific b parameter M R015 Unsaturated zone 1, hydraulic conductivity (m/yr)

-o U Contaminated Zone Thickness (m)

(D Field Capacity 0

1*_ ATrACHMEN 2 i- 3

Section I - Background Information and Objectives for Site Investigations Several investigations concerning subsurface conditions at the site have been undertaken since 1981. The following section provides a brief summary of the scope, objectives and results for these investigations that formed the basis for the initial RESRAD inputs. However, three additional Haley & Aldrich investigations (one geotechnical and two hydrogeologic reports dated May 1999, March 2001 and August 2001 respectively) provide additional site-specific information which is the basis for this revision (Revision 1). Revisions that were noted in the Haley & Aldrich 12 September 2001 report have been incorporated into Section II.

Groundwater Technology's, Inc. investigation (1981) provided the basic hydrogeologic framework for the site, serving as a guide for future groundwater monitoring. Monitoring well installations have occurred, since the initial investigation in 1981, in a staged approach, first by GEO Engineering (1992, and 1994) and by Haley & Aldrich (1998). Depending on the purpose for monitoring, wells were installed at several locations typically adjacent to site structures of interest. Monitoring wells were installed in both soil and bedrock.

WM The Preliminary Hydrological Investigation, Saxton Nuclear Station, Saxton, Pennsylvania.

0u) 0*-nl 1981 by GROUNDWATER TECHNOLOGY, INC. reviewed information obtained from the

,:C 0., Pennsylvania State Geologist and the United States Geological Survey (Water Resource Branch). In conjunction with geologic reconnaissance, this provided the initial geologic interpretation for the Saxton site. Test borings located near the containment vessel (CV) and the radioactive waste disposal facility (RWDF) were installed to characterize the soils and

-) bedrock and the groundwater in each media.

CD Results of investigation lead to following conclusions:

0

• The result of this investigation identified three distinct subsurface materials: fill, a boulder layer with silty clay matrix and bedrock (occurring in this order from ground surface when present).

0 0

• Field permeability tests were conducted in boreholes and soil laboratory mechanical a

0 analysis was performed on construction fill materials. Based on the field permeability testing, the highest permeability is at the boulder layer/bedrock interface.

0 The boulder layer .appears to act as a barrier to the flow of groundwater between the 0

" ~construction fill and the bedrock.

• Preliminary groundwater level observations in test borings indicate a hydraulic gradient 0 of 10 to 15 feet of a distance of 600-800 feet from the site to the river.

, 0" The combination of hydraulic gradient, bedrock permeability, and bedrock structure rz (bedding and fracture patterns) indicates that the groundwater has a potential to flow from the site to the river.

0'(

The main objective of the Phase I Report of Findings-Groundwater Investigation Saxton Nuclear Experimental Station, Saxton, Pennsylvania, 1992 GEO Engineering was the installation of 8 monitoring wells at locations near the CV and RWDF. The wells were Mo screened (and sanded) across the top bedrock and boulder layer contact. This was an area 90 identified in the 1981 investigation as an area of relatively higher permeability compared to 0- its immediate surroundings. Other pertinent information follows:

A relative elevation survey of each well using an arbitrary datum of 100.00 feet at GEO-I was completed. Water level information from these eight wells was used to produce 0q computer-generated contour maps of the groundwater surface. The resultant direction of 1

ATTACHM EN-_Z a-L 10/18/01

groundwater flow (groundwater flowing perpendicular from locations with higher contour to those with lower elevations) is in a westerly direction towards the Raystown Branch of Juniata River.

"* For the purpose of monitoring radionuclide contamination in groundwater, several wells were installed hydraulically downgradient of the CV and several other upgradient of this structure.

"* The investigation confirmed the orientation of potential groundwater pathways in the bedrock (fractures and bedding)

"* A recommendation was proposed for the installation of two groundwater monitoring wells in bedrock adjacent to the CV.

In 1994, two gas-actuated monitoring wells devices were installed into the bedrock near the CV as reported in GEO Engineering's, Summary of Field Work, 1994. These two devices were installed into the bedrock to a depth similar to the base of the CV. The devices were installed west and northwest of the CV, at approximately 25 degree angles, to facilitate the interception of groundwater flowing in the bedrock.

trn During this field activity a 50-foot observation well (GEO-9) was installed in bedrock making 0 -0 it possible to obtain water level elevation data from the bedrock unit. As part of this field

_ *activity, monitoring wells GEO-1 to GEO-8 were retrofitted with gas actuated samplers.

0cIn The Report of Field Work by Haley & Aldrich (1998) two additional gas actuated groundwater monitoring devices were installed adjacent to the RWDF (to the depth of the

< sump) to investigate the potential presence of tritium in groundwater. Also, GEO-10 was installed at the bedrock /soil interface to supplement the existing monitoring wells. It was situated downgradient of GEO-5 to evaluate trace amounts of tritium detected in the

< groundwater at GEO-5.

CD Section II - Summary of Descriptions and Justifications for Individual Parameters C

0 R013 Cover depth (m) - Physical Parameter Based on information provided by GPU Nuclear, cover will not be placed over the area for which the modeling applies, and therefore, the cover depth was input as 0.0 meters.

0

-. R013 Density of cover material (g/cm 3) - Physical Parameter a) Since the above-described parameter (cover depth) is input as 0.0, density of the cover

= C* material is not applicable and therefore not input into the RESRAD model.

.=Z RI'R013 Cover depth erosion rate (m/vr) - Physical Parameter Since the above-described parameter (cover depth) is input as 0.0, density of the cover a C material is not applicable and therefore not input into the RESRAD model.

8R013 Density of contaminated zone (g/cm 3) - Physical Parameter Based on information provided by GPU Nuclear regarding le-ations and depths of sampling CM points with radionuclide concentrations above background, the contaminated zone is located

0. between approximately 0 and 1.0 meters, as shown on Figure 1. Based on subsurface "investigations as described in Section 1, the geologic stratigraphy at this depth is described as CD mixed soils, sandy or silty clay to well graded sand and gravel with rock fragments. Based on the May 1982 Department of Navy Naval Facilities Engineering Command (NAVFAC) i;ý DM-7.1 Manual, dry weight density for this type of material is in the range of 80 to 120 R lb./ft3 (or 1.28 to 1.92 g/cm'). The range for dry weight as opposed to wet, or submerged ATTACHMENT,,

A23 2, 10/18101

weight, was used as the depth of soil contamination is unsaturated. The value input into the RESRAD model was 1.60 g/cm 3, the average of the above-stated range.

R013 Contaminated zone erosion rate (m/yr) - Physical Parameter Based on the Data Collection Handbook to Support Modeling Impacts of Radioactive Material in Soil (C. Yu, C. Loureiro, J. J. Cheng, L.G. Jones, Y.Y Wang, Y.P Chia, and E. Faillace, Environmental Assessment Division Argonne National Laboratory - www.ead.anl.gov) and assuming future use scenario as row-crop agriculture with an approximate 2% slope, the range of 9x10 5 to 6x14 to m/yr was used. The value input into the RESRAD model was 3.45x1O4 m/yr, the average of the above-stated range.

RO 13 Contaminated zone total porosity - Physical Parameter Based on subsurface investigations as described in Section I, the geologic stratigraphy of the contaminated zone is described as mixed soils, sandy or silty clay to well graded sand and gravel with rock fragments. Referencing Maidment, Handbook of Hydrology (pp. 5.14),

1993, these soil types correspond to total porosity ranges of between 0.35 and 0.56. Total CD oporosity is defined as the part of the soil volume that is void space. The recommended value mO m input into the RESRAD model is 0.46, the average of the above-stated range.

Q. R013 Contaminated zone effective porosity - Physical Parameter The effective porosity range for the site was based on the soil types. Referencing Maidment, 0

tHandbook of Hydrology (pp. 5.14), 1993 expressed the effective porosity range of 0.28 to r-- .0.54 based on the soil types found at the site. Effective porosity is defined as the percentage

• < of inter-connected void space, and is applied to characterize soil. The recommended value input into the RESRAD model is 0.41, the average of the above-stated range. This value is not used by RESRAD 6.0.

0 RR013 Contaminated zone hydraulic conductivity (m/yr) - Physical Parameter Hydraulic conductivity values are based on the results of field tests, soil characterization, empirical relationships, published values and the experience of our expert consultant. Packer 0

0 tests (rock pressure tests) were performed during the 1981 Preliminary Hydrogeologic Investigation in order to estimate the range in values for hydraulic conductivity of the bedrock 5" below the site. The packer test involves pumping water under pressure into selected sections 0- of an open borehole isolated using pneumatic packers. Packer tests indicated hydraulic 0

" ~conductivity of the bedrock to range between lx10-3 cm/s to negligible flow.

0* In addition to packer testing for the 1981 report, sieve analyses were conducted on samples of

-, 0 the silty sand fill and ash fill. Initial estimates of hydraulic conductivity suggested a high of r 1xl0 6 cm/s for the fill.

to0 c' Based on recent analyses for the purpose of the RESRAD modeling, data from the grain size C) distributions of the fill collected from the 1981 investigation were entered into several C empirical relationships in order to refine the estimates of hydraulic conductivity. These 9D empirical relationships relate median effective grain diameter (typically, the grain diameter CD- which represents the 10% finer by weight on a grain size distribution) as well as other 0 properties including sorting and porosity to hydraulic conductivity. The empirical

'0 relationships used have been shown to correspond well with field measured hydraulic CD conductivity (Vukovic, Milan and Soro, Andjelko. Determination of Hydraulic Conductivity 13L. of Porous Media from Grain-Size Composition, 1992).

0 4

t-7,I'TCHMEN- 2 - ,10/18/01

The following presents one of the empirical equations as taken from Vukovic, Milan and Soro, Andjelko, Determination of Hydraulic Conductivity of Porous Media from Grain-Size Composition, 1992:

Slichter:

S3.287 dt2 Where: K = hydraulic conductivity (cm/sec) 2 g = acceleration due to gravity: 980 cm/sec 2

v = kinematic viscosity of water [at 20 deg C]: 1.125x10 2

Cs = constant: 1.0x10-n = porosity dio = effective grain diameter tE M Hydraulic grain conductivity values for the fill generated through the empirical relationships using size data were somewhat higher than the estimates initially suggested in the 1981

-(." Preliminary Hydrogeologic Investigation report. Specifically, the original report suggested

52. hydraulic conductivity values ranging from lx106 to lx10s to cm/s (0.315 to 3.15 m/yr).

However, recent evaluations of grain size data (soil samples S-I, S-2 from the 1981 0

• Ground/Water Technology investigation and TB-1, similar to TB-3 from the Haley&Aldrich r-- geotechnical investigation 1999) suggest hydraulic conductivity values ranging from lx106 to

< 8x 1072 cm/s (3.62 x 10' to 2.54 x 104 to m/yr), which is the range used in the RESRAD

• modeling. The recommended value input into the RESRAD model is 32.3 m/yr (1 x 10-4 CA cm/sec), the geometric mean of the above-stated range.

In addition to methods described above, hydraulic conductivity was qualitatively assessed

_ given the experience of our expert consultant and based on their visual observation during o installation of the soil borings and soil sample characterization. The values given above also correspond with published values for silts, sandy silts, and clayey sands (Applied Hydrogeology, Fetter, C.W., 1988).

- R013 Contaminated zone b parameter - Physical Parameter

? As described in the Data Collection Handbook to Support Modeling Impacts of Radioactive

• Material

) in Soil (C. Yu, C. Loureiro, J.-J. Cheng, L.G. Jones, Y.Y Wang, Y.P Chia, and E.

• =-Faillace, Environmental Assessment Division Argonne National Laboratory W 0. www.ead.anl.gov) the soil-specific exponential b parameter is an empirical and dimensionless

.Z parameter that is used to evaluate the saturation ratio (or the volumetric water saturation) of 2 e*the soil. Published data based on laboratory testing indicate a range of the exponential b C

• parameter is between 4.05 and 7.12. The RESRAD input for this parameter was based on the 6 values corresponding from sand to loam in Table 13.1 of the Data Collection Handbook. The CD recommended value input into the RESRAD model is 5.6, the average of the above-stated range.

<D

-,-.o R013 Average annual wind speed (m/sec) - Physical Parameter

-'° The input value for this parameter were based on data provided from the National Climatic Data Center (1999 Annual Summary Local Climatological Data for Pittsburgh, Pennsylvania). The RESRAD input reflects the minimum monthly mean wind speed (3.13 nm/sec or 7.0 mph) and maximum monthly mean wind speed (4.83 m/sec or 10.8 mph) over a

/T -MEIN 2 10/18/015

42 year span. The value input into the RESRAD model is the annual mean wind speed based on 42 years of data of 4.07 m/sec (9.1 mph).

R013 Humidity in air (g/m 3) - Physical Parameter The default value of 8.0 g/m 3 was used in the RESRAD model.

R013 Evapotranspiration coefficient - Physical Parameter The value range for this input parameter was based primarily on guidance in the Data Collection Handbook to Support Modeling Impacts of Radioactive Material in Soil, and was estimated through an iterative solution with other parameter values including precipitation, irrigation and runoff coefficient. The range was based on a runoff coefficient (Cr) range of 0.3 to 0.4; a precipitation range (Pr) of 0.688 to 1.327 m/yr; and an irrigation value (IR,) of 0.2 (refer to individual parameter justifications, as described below). Using these values, an evapotranspiration rate (ETr) was estimated (this value is not used implicitly in RESRAD, but is an intermediate step in calculating the evapotranspiration coefficient). Based on the Evaporation Atlas of the United States (NOAA, 1982), evaporation is estimated to be approximately half of the total (annual) precipitation for the Saxton, PA area. Given this, the M evapotranspiration coefficient was estimated as follows:

0 m

_* o.ET,

-- ( C, ) P, +*IR ,

0 r'

< Calculated Range of Ce = 0.50 to 0.67 m/yr "a~ The value input into the RESRAD model was 0.59, the average of the above-stated range.

0 0_ R013 Precipitation (m/yr) - Physical Parameter The input values for this parameter were based on data provided from the National Weather "0 Service (1999 Annual Summary Local Climatological Data for Pittsburgh, Pennsylvania).

0 0 The RESRAD input range reflects the 30 year minimum (0.688 m/yr or 27.09 inches/yr) and maximum (1.327 m/yr or 52.24 inches/yr) annual precipitation amounts. The value input into the RESRAD model was 0.936 m/yr (36.85 inches/yr), which is the 30 year annual 0 precipitation average.

0' R013 Irrigation (m/yr) - Physical Parameter

_ Based on the agricultural use scenario, the default value for irrigation (0.2 m/yr) was input "0-into the RESRAD model.

"0 R013 Irrigation mode - Physical Parameter o, tIt was assumed that the irrigation would be distributed overhead.

N' R013 Runoff coefficient - Physical Parameter The input values for this parameter were based on data provided from two sources: U.S.

XD Geological Survey Hydrologic Investigation Atlas HA-710 - Average Annual Runoff in the 0United ~ States, 1951-1980; and Table 10.1 of the Data Collection Handbook to Support 7 -" Modeling Impacts of Radioactive Material in Soil. The RESRAD input range represents (a coefficient values corresponding to an agricultural environment comprised of flat to rolling

[1 land (slopes of 0.3 to 6.1 m/mi). The corresponding range for runoff coefficient is 0.3 to 0.4. The value input into the RESRAD model was 0.35, the average of the above-stated 0 range.

- . -O 6

R013 Watershed area for nearby stream or pond (m2 ) - Physical Parameter Based on the topographic quadrangles for Saxton, PA and Hopewell, PA, the watershed area surrounding the facility was estimated as the total area of land bounded by the Juniata River and surrounding topographic high areas. The value input in the RESRAD model was 5x10 6 M2 .

R014 Density of saturated zone (g/cm 3) - Physical Parameter Based on information provided by GPU Nuclear regarding water levels in the vicinity of the site, the saturated zone begins at between 0.7 and 2.3 meters below ground surface. Based on subsurface investigations as described in Section I, the geologic stratigraphy at this depth and below, is described as mixed soils and bedrock. Based on the May 1982 Department of Navy Naval Facilities Engineering Command (NAVFAC) DM-7.1 Manual, density for this type of material is in the range of 80 to 120 lb./fte (or 1.28 to 1.92 g/cm 3). The range for wet weight was used as this pertains to saturated soil/rock. The value input into the RESRAD model was 1.60 g/cm3 , the average of the above-stated range.

mZ R014 Saturated zone total porosity - Physical Parameter 0 -° Based on subsurface investigations as described in Section I, the geologic stratigraphy of the

_C?. saturated zone is described as mixed soils and bedrock. As denoted in Figure 1, units B, B/C X:

-and C are considered saturated and only units B/C and C subject to any appreciable flow of 0 groundwater. Further, based on the thicker saturated thickness of unit C in relationship to G) unit B/C and other pertinent information we recommended combining the interface and

< bedrock units (B/C and C) and using values for the siltstone bedrock for the RESRAD inputs.

Referencing Domenico and Schwartz, Physical and Chemical Hydrogeology (1990, p. 29) the siltstone bedrock's total porosity ranges between 0.31 and 0.41. Total porosity in bedrock is related to fracture porosity, which for this rock type, provides the majority of the void space.

3* The recommended value input into the RESRAD model is 0.36, the average of the above o stated range.

0 R014 Saturated zone effective porosity - Physical Parameter The effective porosity range is based on bedrock. Referencing Domenico and Schwartz, Physical and Chemical Hydrogeology (1990, p.29) expressed the effective porosity range of

-? 0.005 to 0.05 based on shale bedrock. The recommended value input into the RESRAD a) model is 0.028, the average of the above-stated range.

oc

=0 W0 R014 Saturated zone hydraulic conductivity (m/yr) - Physical Parameter o 0 The hydraulic conductivity for the bedrock based on testing of bedrock wells OW-3R, OW j5 a4R, OW-5R and OW-7R is 67.91 m/yr, the geometric mean of these four test results, (value C reported in Haley & Aldrich's August 2001 report) in the saturated zone. The recommended value input into the RESRAD model is 67.91 m/yr.

CD R014 Saturated zone hydraulic 2radient - Physical Parameter

-o The hydraulic gradient in the bedrock based on water level information recorded on January "11, 2001 ranges between 0.02 and 0.03 (gradient between the tunnel and the river and the site to the discharge tunnel respectively). A review of water level information on June 13, 2001 indicated a decrease in the hydraulic gradient from the tunnel to the river (0.013) while the R value from the site to the tunnel remained the same as that calculated for the January water M - 1r - 101,18/01 18

level information. The recommended value input into the RESRAD model is 0.02, the average of the lower value of the tunnel to the river and the value of the site to the tunnel.

R014 Saturated zone b parameter - Physical Parameter Refer to the discussion of the zone b parameter for the contaminated zone, presented above.

The recommended value input in the RESRAD model is 5.6.

R014 Water table drop rate (m/yr) - Physical Parameter Annual variation of the groundwater elevation at the SNEC facility is approximately 0.5 meters in the fill deposits and approximately 1.6 meters in the bedrock unit. This information is based on water level measurements collected over the period March 1999 to April 2001 by GPU Nuclear personnel. Although seasonal variation is up to approximately 1.6 meters, and possibly could be higher, a decline in long term groundwater elevations is expected to be significantly less, if any, since water table conditions are moderated by the strong hydrogeologic influence of the Juniata River, including existing river elevation controls. In addition, there is no unusually high consumptive use of groundwater locally. Based on this, a value of 0 m was input into the RESRAD model.

0 0c) R014 Well pump intake depth (m below water table) - Physical Parameter Based on recommended well pump intake depths (Driscoll, Fletcher, Groundwater and Wells, Second Edition, 1986) and the subsurface conditions as described in Section I, the range for the well pump intake depth was input as 10 to 50 meters below the water table. Actual pump G) intake depths may vary based on the actual depth of the well, in addition to actual well yield

< and usage requirements. The value input into the RESRAD model was 30 m, the average of the above-stated range.

R014 Model: nondispersion (ND) or Mass-balance (MB) - Physical Parameter

< Guidelines from Appendix C - Rev 0 of the NMSS Decommissioning SRP indicate that the nondispersion approach should be acceptable when the area of contamination is known to be 0 larger than the assumed capture area of a hypothetical well. The guidance provides a O calculation to estimate the capture area of a hypothetical well, however the calculation 0

assumes a flat water table, which, based on subsurface investigations decried in Section I, is "3 not the case at the SNEC facility. The gradient based on data from monitoring wells collected as part of the 18 November 1992 report entitled Phase I Report of Findings Groundwater Investigation, ranges from 0.02 to 0.04. Given static hydraulic gradient,

_) hydraulic conductivity, and saturated thickness of the geologic strata, potential capture zone 0 C_ of a hypothetical well can be estimated as follows:

=" 0 *Downgradientflow boundary (nullpoint):

-0

,*(2

• K* b

• i) x(2*67.91 *50*02) X 0.670

• Transverse boundary (width of capture):

< 0 y 286. 4.2 ]m (Y *b'i) 0 767.91*50*0.02)

(

CO 111 8 101O/18/01 WE

Where, Q = averagepumping rate of RESRAD input range (m3/yr)

K = average hydraulic conductivity of RESRAD input range (m/yr) b = saturatedthickness of the aquifer (m) i = average hydraulic gradient of RESRAD input range (m/in)

"* Equation taken from Wellhead Protection Strategies, US Geological Society, 1991.

"* Since the transverse boundary is equivalent to a linear distance (width of capture zone), to extrapolate to a total capture area, the transverse boundary is multiplied times pi.

A, = Y

• 7r Ac = 13.23m-2 Based on information provided by GPU Nuclear, the area of contamination ranges from 182.4 to 1,161 m2 . Based on the above equations, an estimate of capture zone for a hypothetical well at the SNEC facility is approximately 13.23 M2 . Based on this, the area of the contamination is greater than the capture area of a hypothetical well, and therefore the Z

mnon-dispersion mode was applied for the RESRAD modeling.

0 o

_. R014 Well pumping rate (m 3 /yr) - Physical Parameter Based on data collected in the American Water Works Association Research Foundation's

" t0 Residential End Use Study, 1998, the typical usage volume for a single domestic well varies

-- from approximately 207.3 M3/yr to 365 m3/yr. The value input into the RESRAD model was

< 286.2 m 3/yr, the average of the above-stated range.

g* R015 Number of unsaturated zone strata - Physical Parameter

< As noted earlier, the contaminated zone is present to 1.0 m below ground surface for the 0

modeled area (Figure 1). The saturated zone begins at approximately 1.5 m below ground surface, and given the seasonal variation of the water table, the unsaturated zone exists (and varies) from 1 to 1.5 m below ground surface. During a period of one to two months in the 0) o spring water levels may be higher than throughout most of the hydrologic year resulting in a period of transient saturation. Therefore, 1 was input for the number of unsaturated zone strata.

0 R015 Unsaturated zone 1, thickness (m) - Physical Parameter As noted above, the unsaturated zone exists (and varies) from 1 to 1.5 m below ground Therefore, the unsaturated zone thickness ranges from 0 to 0.5 m (see Figure 1).

) -0 The value input into the RESRAD model was 0.25 m, the average of the above-stated range.

F. . Z 0

R015 Unsaturated zone 1, soil density (g/cm3) - Physical Parameter C) Based on subsurface investigations as described in Section I, the geologic stratigraphy at this C depth is described as mixed soils, sandy or silty clay to well graded sand and gravel with rock 6 fragments. Based on the May 1982 Department of Navy Naval Facilities Engineering Command (NAVFAC) DM-7.1 Manual, dry weight density for this type of material is in the range of 80 to 120 lb./ft3 (or 1.28 to 1.92 g/cm-). The range for dry weight as opposed to o wet, or submerged weight, was used as the depth of soil contamination is unsaturated. The

-o'° value input into the RESRAD model was 1.60 g/cm 3, the average of the above-stated range.

Unsaturated zone 1, total porosity - Physical Param eter The total porosity range for the site in the unsaturated zone is based in three soil types (fill oq materials). Specifically, soil samples S-I and S-2 from the 1981 Ground/Water Technology S'2 . 10/18/01

investigation and TB-i, similar to TB-3 from the Haley & Aldrich geotechnical investigation 1999 were selected. Referencing Maidment, Handbook of Hydrology (pp. 5.14), 1993, the on-site soil types correspond to a range in total porosity between 0.35 and 0.56. Total porosity is defined as the part of the soil volume that is void space. The recommended value input into the RESRAD model is 0.46, the average of the above-stated range.

R015 Unsaturated zone 1. effective porosity - Physical Parameter The effective porosity range for the site was based on the soil types. Referencing Maidment, Handbook of Hydrology (pp. 5.14), 1993, the range of 0.28 to 0.54'for effective porosity is the recommended as the appropriate parameter input based on the soil types found at the site.

The recommended value input into the RESRAD model is 0.41, the average of the above stated range.

R015 Unsaturated zone 1, soil-specific b parameter - Physical Parameter Refer to the discussion of the zone b parameter for the contaminated zone, presented above.

The recommended value input into the RESRAD model is 5.6.

R015 Unsaturated zone 1, hydraulic conductivity (m/yr) - Physical Parameter MM Refer to the discussion of hydraulic conductivity for the contaminated zone, presented above. wn' As the geologic profile does not change significantly with regard to hydraulic conductivity, S1 the input range for the contaminated zone hydraulic conductivity was used again as the range a for the unsaturated zone hydraulic conductivity. The recommended value input into the RESRAD model is 32.3 m/yr (1 x 1O0cm/sec), the geometric mean of three site soil types. C C:

"* Contaminated Zone Thickness (in) - Physical Parameter Mr Based on information provided by GPU Nuclear and for the specific application of the <

RESRAD modeling, the contaminated zone is considered to be the upper 1 meter C throughout the modeled area (Figure 1). The value input into the RESRAD model was therefore 1 meter. 0 0

"* Field Capacity - Physical Parameter (All Zones)

Based on information provided by GPU Nuclear and RESRAD developers at Argonne o National Laboratory, field capacity, a value included in the RESRAD 6.0 code, refers 0 to specific retention as it applies to unsaturated soil. Based on published values for a field capacity for soil materials classified as similar to on-site soil (Brady, The Nature 05

& Property of Soils, 1974) field capacity ranges from 0.079 to 0.192. The =° recommended value input into the RESRAD model is 0.136, the average of the 5D 0z minimum and maximum estimated values. O)

Endnote: CD 0

Anthony Bonasera originally compiled the list of RESRAD input parametersand references supporting the values. 0 The equationspresented in the text were hand checked by Daniel G. Eurch of Haley & Aldrich, Inc in March 2001. 77Te June 2001 updated version includes revisionsto the evapotranspirationand model parameterequations <

due to changes in the input parameters. The 12 June 2001 version includes edits to the evapotranspiration,.0 precipitationvalues (increasedprecipitationdecimal places,field capacitr, hydraulic conductivity, effective porosity and model parameterequations. Nancy van Dvke & Charlie Butts of Haley & Aldrich, Inc checked the c June 2001 equation revisions. As you requested, Haley & Aldrich, Inc. created afile of citationsfor this document, this file is being maintainedand updatedfor GPU'sfuture reference.

G.\documenis\74\74683\74683m06.doc 0

] 10 OZ

... - 1018/01

SKETCH OF UNDERGROUND MATERIALS HYDROGEOLOGIC GEOLOGIC RESRAD 4RESR6 UNSATURATED CONTAMINATED I (TRANSIENT SATURATION)

IGH GROUNDWATER LEVEL *07MTR UNSATURATED (TRANSIENT "1.0METER BELOW G.S. SATURATION) II Jg SATURATED BUT OVERBURDEN PRACTICALLY LOW GROUNDWATER LEVEL (BOULDER LAYER WIT IMPERMEABLE 2.3 METERS S IL& CLAY IN*.QID SPACE)

III N OVERBURDEN (BOULDER LAYER)

FLOW

--- (B/C) "__= BELO**OW .S.

FLOW SATURATED III HAEY

__-__ ____ . -, -,. , /

SAXTON NUCLEAR EXPERIMENTAL FACILITY SAXTON, PENNSYLVANIA

____o_ ___ '0a"e Z009IZ 'a!NJeuuol ed oOig0 AledsojNa FIGURE 1 c;. jo IK 9 6ed'O AOJ 9OO-ZO-OO69 ON uoileIfolzJe 3 u0!)eu!weIuoo o!jIWlIOA JOJ sanflEj' i:0a REVISION I 1IIPS2I 3gNS

_.._ a r0 l ^elg00009 'ONuoeuuOQl 'd yo.u.-unloA sane 7o r 1oi 'Asoe_ 'a 10 ~-ZZ e-6ed '0 A8J '9OO-ZO-OO69 'ON uoQifenleoIBuoileuiweIUO3 oulowfl~O/ JOJ ~l9f so1030E)C AlII!oLed 03NS SNEC SAMPLES ASSAYED FOR Kd VALUES AT ANL Sample I Sample 2 Smple 3 Sample 4 smple S Sample S Sample 7 Sample S River (composite) Sediment Sooth of Warehouse CVArea, Near Sample SSGSSESum by OldAccess Road CVArea Sv.4tchyard CV Area CV Area CVArea Location Urrecthered Maated*aType sedment Construction Debris FlyAsh & Cinders Back-Fil Mstariala FillSoil Clay Matarial Weathered Badrock Bedrock (crushed)

Reference Grid No.&L Bark Above Bridge &OffTip AZ-129.14' W by 10- AZ-129, 15-N by 12 Cogosnaa Of Island AV-133 AJ-131,21' N by 2'W N BA-129.lN BA.129, Nby2W AZ-128,13' N to WS'E Depth (Grad#811' El) 0' - 1'BelOwSedinront Surface -787'El -811, -795 -8100' -809. 12' -800' -800' LoweatValue HigheslValue H-1 -1 -1 -1 -1 -1 -1 -1 1 1 1 0 0.0%

C 1 -t ~I -1 -I -I "1 -I I I 1 0 0.0% c NI 10000 10000 4000 10000 10000 10000 1300 1500 1300 10000 7100 4082 57.5% NI Nb

_i 600 80 500 500 500 500 500 500 80 600 460 157 34.2% E,,Nb Tt 8.1 54 54 8.6 1.4 1.6 1.3 1.3 1.3 64 16 23 144.1% To u 37 16 5200 17 34 106 5200 226 16 5200 1355 2375 175.3% u Pu 600 160 600 400 400 400 600 400 160 600 445 152 34.1% Pu CSoEu 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 0 0.0% Ce, Eu Co 1000 1000 200 1000 1000 1000 1000 1000 200 1000 900 283 31.4% co Ce 2340 2433 2131 14149 13618 2864 9746 28341 2131 28341 9453 9205 97.4% Cs Fe 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 0 0.0% Fe ArrCm 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 0 0.0% !aCm

&1 s0 26 476 28 11 24 114 60 11 475 100 155 155 7% Sr Sb 1100 163 6200 2070 1100 1800 5000 1900 163 6200 2291 1838 80.2% Sb Pb 46000 1.60E+05 58000 81000 31000 98000 9700 26000 9700 160000 63713 48553 75.2% Pb ATTACHMEN? 3 -. I

AfIhIflIWIAI aIE@ EAD DDAAI ITIE ANAl YIR wlrQr-E*M lIr% i u " I V/wlADll.V I*W l.r. _ _ ___nL______v__

Basic Range of Values Evaluated Assigned Menu Class PARAMETERS RESRAD Input Min. Max. Distribution I*I Ed~ Ul I

C14 P Thickness of Soil Evasion Layer of C-14 in Soil (m) UJb V QV Wll*mg! Ul*l NIA P Contaminated Zone Effective Porosity Not Used by RESRAD N/A N/A N/A ROll P Area of Contaminated Zone (mA2) 10000 N/A NIA Not Included In Proballstic Analysis ROll NRC Basic Radiation Dose Limit (mrem/y) (NRC) 25 NIA N/A Not Included In Proballstic Analysis ROll P Length Parallel to Aquifer Flow (m) 112.8 NIA N/A Not Included in Probalistic Analysis ROll P Thickness of Contaminated Zone 1 (m) 1 0.5 1.5 Uniform ROll P Time Since Placement of Materials (yr) 0 NIA NIA Not Included In Proballstic Analysis ROll P Times for Calculations (yr) 1 NIA NIA Not Included In Proballstlc Analysis ROll P Times for Calculations (yr) 3 N/A NIA Not Included In Proballstic Analysls Roll P Times for Calculations (yr) 10 NIA NIA Not Included In Proballstlo Analysis ROll P Times for Calculations (yr) 30 NIA N/A Not Included In Proballstic Analysis R*O11 P Times for Calculations (yr) 150 N/A N/A Not Included in Probalistic Analysis R*Oll P Times for Calculations (yr) 350 N/A N/A Not Included In Proballstic Analysis ROll P Times for Calculations (yr) 1000 NIA NIA Not Included In Proballstlo Analysls Roll P Times for Calculations (yr) 10000 N/A NIA Not Included in Proballstic Analysis R013 P Average Annual Wind Speed (m/sec) 4.07 3.13 4.83 Not Included in Probalistic Analysis R013 P Contaiminated Zone Field Capacity 0.136 0.079 0.192 Not Included in Probalastic Analysis R013 P Contaminated Zone b Parameter 6.6 4.07 7.12 Not Included in Proballstic Analysis R013 P Contaminated Zone Erosion Rate (m/yr) 0.000346 0.00009 0.0006 Logunlform C) R013 P Contaminated Zone Hydraulic Conductivity (m/yr) 32.3 0.362 25400 Loguniform R013 P Contaminated Zone Total Porosity 0.46 0.35 0.56 Uniform R013 P Cover Depth (m) 0 NIA NIA NIA R013 P. a Cover Depth Erosion Rate (m/yr) Not Used by RESRAD NIA N/A NIA R013 P Density of Contaminated Zone (g/cc) 1.6 1.28 1.92 Uniform R013 P Density of Cover Material (g/cc) Not Used NIA NIA NIA R013 P Evapotranspiration Coefficient (m/yr) 0.59 0.5 0.67 Uniform R013 P Humidity in Air (Default Value Used) (g/mA3) 8 Default Value Default Value Truncated Lo normaI-N R013 B Irrigation (m/yr) (Default Value Used) 0.2 0.1 0.4 Uniform RO13 B Irrigation Mode (Overhead) Overhead N/A NIA NIA Ro13 P Precipitation (m/y) 0.936 0.688 1.327 Uniform R013 P Runoff Coefficient 0.35 0.3 0.4 Uniform R013 P Watershed Area for Nearby Stream or Pond (mA2) 5.OOE+06 2.500E+06 7.500E+06 Uniform R014 P Density of Saturated Zone (g/cc) 1.6 1.28 1.92 Uniform R014 P Model: Non-dispersion (ND) or Mass-Balance (MB) Non.DIsperslon NIA NIA NIA R014 P Saturated Zone b Parameter Not Used by RESRAD N/A NIA N/A R014 P Saturated Zone Effective Porosity 0.028 0.005 0.05 Loguniform R014 P Saturated Zone Hydraulic Conductivity (m/yr) 67.91 15.59 909.53 Uniform R014 P Saturated Zone Hydraulic Gradient 0.02 0.013 0.03 Uniform R014 P Saturated Zone Total Porosity 0.36 0.31 0.41 Uniform R014 P Water Table Drop Rate (mlyr) 0 N/A NIA N/A R014 P Well Pump Intake Depth (m) 30 10 50 Uniform R014 B,P Well Pumping Rate (mA3/yr) 286.2 207.3 365 Not Included in Probalistic Analysis R014 P Saturated Zone Field Capacity 0.136 0.079 0.192 Not Included In Probalistic Analysis ROIS P Density of Unsaturated Zone 1 (g/cc) 1.6 1.28 1.92 Uniform RO15 P Effective Porosity of Unsaturated Zone 1 0.41 0.28 0.54 Uniform ROIS P Hydraulic Conductivity of Unsaturated Zone 1 (m/yr) 32.3 0.362 25400 Loguniform R011 P Number of Unsaturated Zone Strata 1I... NJIA NIa NIA

__I I w nIl I

SNEC Facility DCGL Values for Volumertdc Contamination, Calculation No. 8900-02-008, Rev 0, Page.?2 of .___B

- Brosey 2/5102 P Donnachie 2/5/02

____________________ 1__ 0 5~1fl Uniform R~B P hickness of Unsaturated Zone 1 (m) S'

• Uniform 0.35 0.56 Uniform RO15 P Total porosity of Unsaturated Zone 1 046A -

• V Not Included in P'robanist~c Analmysis J Ifl*

• I!

RO15 P Unsaturated Zone 1 b Parameter 0.136 0.079 0.192 Not Included in Probalistic Analysis RO17 P Unsaturated Zone Field Capacity 0.7 0.044 1 Bounded Lognormai,-N R017 P External Gamma Shielding Factor Uniform 0.4 0.15 0.95 RO17 P Indoor Dust Filtration Factor Continuous Linear 0.5 0 1 R017 M, B Indoor Time Fraction Triangular 8400 4380 13100 R017 M. B Inhalation Rate (mA3/yr) 0.0001 0 0.0001 Continuous Linear R017 P Mass Loading for Inhalation (g/mA3) 0.5 0 1 Triangular R018 B, P Contaminated Fraction of Aquatic Food B, P I NIA NIA Not Included In Proballstlo Analysis RO18 Contaminated Fraction of Drinking Water Not Used N/A NIA N/A R018 B, P Contaminated Fraction of Household Water 0.75 0.5 1 Uniform ROI8 a, P Contaminated Fraction of Irrigation Water 0.75 0.5 1 Uniform R018 B, P Contaminated Fraction of Livestock Water 1 N/A N/A Not Included In Probalistic Analysis RO18 B, P Contaminated Fraction of Plant Food I N/A N/A Not Included in Probalistic Analysis RO18 B, P Contaminated Fraction of Meat I N/A NIA Not Included in Probalistic Analysis RO18 B, P Contaminated Fraction of Milk 478.5 *730 Uniform R018 M, B Drinking Water Intake (L/yr) 20.6

• 21 Uniform Roll M, B Fish Consumption (kglyr) 112 50 Uniform RO18 M. a Fruit, Vegetable, and Grain Consumption (kg/yr) 21.4 *64 Uniform ROle M, a Leafy Vegetable Consumption (kg/yr) 67 110 Uniform R018 M, a Meat and Poultry Consumption (kg/yr) 233 :310 Uniform 0 R018 M, B Milk Consumption 0.9 0.9 5 Uniform R018 M, 8 Other Seafood Consumption (kglyr)

ROI1 M.D 18.3 36.5 Uniform Soil Ingestion Rate (g/yr) 0.9 0.3 4 Uniform RO19 P Depth of Roots (m) 0.15 0 0.6 Triangular R019 P Depth of Soil Mixing Layer (m) 20 5.1 84 Triangular ROISB P Weathering Removal Constant of all Vegetation 1.1 0.55 2.2 Not Included In Proballstlc Analysis RO19B P Wet Crop Yield for Fodder (kg/mA2) 1.5 0.75 3 Uniform RO19B P Wet Crop Yield for Leafy (kg/mA2) 0.7 Default Value Default Value Truncated Lognormal-N RO19B P Wet Crop Yield for Non-Leafy (kg/m^2) rla.. uwr AIhlt ~I:li~ Inr~ntinn Fr~r~tinn nfl p fv VIent~b1s ,.25.. 00 ..

0.28 0.06 0.95 I rilangullar I.

DistributionCoefficient for Americium &Curium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 1000 1000 5000 Not Included in Probalistic Analysis RI P 2. Unsaturated Zone (cm^31g) 1000 1000 5000 Not Included in Probalistic Analysis RUS P 3. Saturated Zone (cmA3/g) 1000 1000 5000 Not Included in Probalistic Analysis DistributionCoefficient for Carbon Value Used (ANL) GPU Min. GPU Max. DistributionType RiG P 1. Contaminated Zone (cmA3/g) 1 0 5 Uniform RIG P 2. Unsaturated Zone (cmA3/g) 1 0 5 Uniform RIG P 3. Saturated Zone (cm^3/g) 1 0 5 Uniform Distribution Coefficient for Cobalt Value Used ANL Min. ANL Max. DistributionType RIG p 1. Contaminated Zone (cmA3/g) 200 200 1000 Not Included in Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3ig) 200 200 1000 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 200 200 1000 Not Included In Probalistic Analysis DistributionCoefficient for Cesium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 2131 2131 28341 Not Included in Probalistic Analysis R16 P 2. Unsaturated Zone (cmA3/g) 2131 2131 28341 Not Included in Probalistic Analysis R16 P 3. Saturated Zone (cmA3/g) 2131 2131 28341 Not Included in Probalistic Analysis

/

DistributionCoefficient for Europium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 1000 1000 5000 Not Included In Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 1000 1000 5000 Not Included In Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 1000 1000 5000 Not Included In Probalistic Analysis DistributionCoefficient for Iron Value Used ANL Min. ANL Max. Distribution Type RIG P 1, Contaminated Zone (cmA3/g) 10000 10000 50000 Not Included In Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 10000 10000 50000 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 10000 10000 50000 Not Included in Probalistic Analysis DistributionCoefficient for Hydrogen Value Used (ANL) GPU Min. GPUMax. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 1 0 5 Uniform RIG P 2. Unsaturated Zone (cmA3/g) 1 0 5 Uniform RIG P 3. Saturated Zone (CmA3/Ig) 1 0 5 Uniform DistributionCoefficient for Niobium Value Used ANL Min. ANL Max. Distribution Type RIG P 1. Contaminated Zone (cmA3/g) 80 80 600 Not Included in Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 80 80 600 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 80 80 600 Not Included In Probalistic Analysis DistributionCoefficient for Nickel Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 1300 1300 10000 Not Included In Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 1300 1300 10000 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 1300 1300 10000 Not Included In Probalistic Analysis DistributionCoefficient for Plutonium Value Used ANL Min. ANL Max. DistributionType C4 RIG P 1. Contaminated Zone (cmA3Ig) 160 160 600 Not Included in Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 160 160 600 Not Included In Probalistic Analysis Dm RIG P 3. Saturated Zone (cmA3/g) 160 160 600 Not Included In Probalistic Analysis 0

DistributionCoefficient for Antimony Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 153 153 5200 Not Included In Probalistic Analysis R16 P 2. Unsaturated Zone (cMA3/g) 153 153 5200 Not Included In Probalistic Analysis R16 P 3. Saturated Zone (cmA3/g) 153 153 5200 Not Included In Probalistic Analysis SDistribution Coefficient for Strontium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3Ig) 11 11 475 Not Included in Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 11 11 475 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (CmA3/1g) 11 11 475 Not Included in Probalistic Analysis DistributionCoefficient for Technetium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 1.3 1.3 54 Not Included in Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3/g) 1.3 1.3 54 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3*g) 1.3 1.3 54 Not Included In Probalistic Analysis SDistribution Coefficient for Uranium Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3ig) 16 16 5200 Not Included In Probalistic Analysis RIG P 2. Unsaturated Zone (cmA3ig) 16 16 5200 Not Included in Probalistic Analysis RIG P 3. Saturated Zone (cmA3/g) 16 16 5200 Not Included In Probalistic Analysis DistributionCoefficient for Lead Value Used ANL Min. ANL Max. DistributionType RIG P 1. Contaminated Zone (cmA3/g) 9700 9700 160000 Not Included in Probalistic Analysis R16 P 2. Unsaturated Zone (cmA3/g) 9700 9700 160000 Not Included In Probalistic Analysis R16 P 3. Saturated Zone (cmA3/g) 9700 9700 160000 Not Included in Probalistic Analysis RO 1.109 Values are highlighted In GREEN SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 8900-02-008, Rev 0, Page2ý'of A* Brosey 2/5/02 '-f ,D.t C;P* onnachie 2/5/02 f/1 ,

NOTE: Additional RAI Information Requested But Not Shown In Above Table D34 P Food Transfer Factors: Values Used DistributionType Plantlsoil concentration ratios, dimensionless RESRAD 6.1 Defaults LOGNORMAL - N Beef/livestock-intake ratios, (pCilkg/(pCild) RESRAD 6.1 Defaults LOGNORMAL - N Milk/livestock-intake ratios, (pCi/L)/(pCi/d) RESRAD 6.1 Defaults LOGNORMAL- N D5 P Bloaccumulatlon factors, fresh water, Ukg:

I Fish RESRAD 6.1 Defaults LOGNORMAL - N Crustacee and mollusks RESRAD 6.1 Defaults I Not Included in Probalistic Analysis

(.

m:

M SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page____ of _ B_ _Brosey_2/5102

__3"-  ; P Donnachie 2/5/02 IV/9

Table 5-1 Site-Wide DCGL Summary (pCi/g)

OVERBURDEN RIVER BEDROCK LAYER LAYER SEDIMENTS near CV, near FROM below CV, Steam Plant, and Spray Steam Plant, and RECREATION Pond below Spray Pond SCENARIO DCGL based on DCGL based on 4 NUCLIDES MINIMUM DCGL based on 25 mrem/yr all- mrem/yr DCGL based on SITE 25 mremYyr all OF pathway drinking-water 25 mrem/yr all- SUBSURFACE pathway CONCERN standard standard pathway standard DCGL standard Am-241 2.8E+02 4.5E+01 1.8E÷01 1.80E+0] 5.3E+06 C-14 1.9E+02 3.IE+01 8.9E+01 3.10E+01 5.3E+04

. Cm-243 6.1 E+03 9.7E+02 1.2E+02 I .20E+02 1.2E+05 W m Cm-244 3.5E+03 5.6E+02 C) 1.8E+02 1.80E+02 8.9E+

-n Co-60 2.5E+05 4.1E+04 2.1E+O1

-2. Cs-134 2.]1 E+OI 1.8E+03 3.5E+16 5.6E+ 15 2.9E+01 2.90E+01 4.OE+03 6"i j Cs-137 5.9E+06 9.4E+05 5.IE+01 5.1OE+O 1.. 1E+04 F. 0 Eu-152 G)5.0E0 2.5E+07 3.9E+06 5.4E+OI 5.40E+01 4.7E+03 r- Eu-154 6.1E+07 9.8E+06 5.OE+01 5.OOE+01 3.7E+03 a Eu-155 4.8E+09 7.7E+08 2.1E+03 2.1 OE+03 6.4E+05

" Fe-55 7.6E+22 . 7.6E+22 11.7E+05 1.70E+05 4.5E+1 I 6' H-3 8.6E+03 1.4E+03 8.9E+03 .40E+03 6.9E+1 0 0< Nb-94 2.3E+03 3.7E+02 3.8E+01 3.80E+01 3.7E+03 1.3E+06 2.1 E+05 1.7E+04 1.70E+04 3.4E+I I.6E+07 2.5E+06 6.3E+03 SNi-63 6.30E+03

" Pu-238 4.2E+01 1.2E+I 6.7E+00 1.1E+02 6.70E+00 9.0E+06 0 Pu-239 9.4E+00 1.5E+00 I.0E+02 1.50E+00 8.IE+06 9.7E+00 1.6E+00 1.0E+02 SPu-240 1.60E+00 .2E+06 9i" "Pu-24 7.OE+03 1.1E+03 'A4E+03 1.EE+03.

4.3E+08 06 0 Pu-242 9.7E+00 1.6E+O0 LIE+02 1.60E+00 8.7E+06

-. - Sb-125 1.0E+02 1.6E+01 I.5E+02 1.60E+01 1.8E+04 2L. Sr-90 2.6E+01 4.2E+00 7.OE+O0 o = o)- Tc-99 4.20E+00 2.1E+02 3.3E+01 5.4E+O I 2.4E+08

03) 3.30E+01 U-234 1.2E+01 1.9E+00 4.6E+02 1.90E+00 5*o

r o2=28E+07 U-235 1.2E+-01 .E0219E0 1.9E+00 2.5E+02 ]90E+00 9.8E+04 U-238 1.2E+01 2.OE+Q0 I.4E÷03 2.OOE+00 3.1E+07 to1 3.1 +0 9

• Nuclide Specific Activity Limit 0

-0 6%

0)

Kfo 5-2

I~ - * , 0 / A esojj*

_ I0/9_i

_N eqoeuuo a('d !

<* JO --- 7'6ed '0 AOj '00-Z0-0069 ON UO!ielnoleo 'uoijeu!uweuoooIuWlIAnlo joj snleA -10a Al!llPe-t Z:NS I-File Names= W N jt.AAAAA.rK.U

• I OMCAAAAAAA.KA.U a

bM4~I.AAAAA5.IRU N

bNr-%,AAAAAL,.lRU NI'U.AAAAADIAU SNECXXXXXEAA.RAL AREA= > 2500 mA2 to 10000 mA2 >400mA2to2500mA2 > 100 mA2to400 mA2 >25 mA2 to 100mA2 > 1 mA2to 25mA2 <or= lmA2 Radionuclides DCGL AF DCGL EMC AF DCGL EMC AF DCGL EMC AF DCGL EMC AF DCGL 6MC AF 2 Am-241 C-14 -

21.4 27.4 1.0 1.0 40.5 137.3 1.9 5.0 97.6 81597 4.6 332.7 15.5 914-6 42.7 6388.4 298.5 2948 4954.4 180.8 2.36E+04 86168 5.12E+05 1.87E+04 3 Cm-243 25.0 1.0 41.2 1.6 70.9 2.8 116.7 4.7 170.4 6.8 1023.5 40.9 4 Cm-244 39.0 1.0 74.9 1.9 186.4 4.8 725.9 18.6 2662.7 68.3 2.31E+04 492.1 5 Co-20 3.9 1.0 4.7 1.2 5.2 1.3 5.8 1.5 7.5 68.9 46.3 1159 6 cs.134 5.1 1.0 .79 1.2 9.4 1.8 10.8 12. 14.0 2.7 84.7 116.6 7 Cs-13 5.1 1.0 7.9 1.5 96.4 1.8 10.8 2.9 33.1 3.8 201.5 23.2 8 Eu-152 10.8 1.0 11.2 1.0 11.8 1.1 12.9 1.2 16.6 1.8 100.6 9.3 9 Eu-154 10 1.0 10.3 1.0 10.9 1.1 11.9 1.2 15.3 1.5 94.6 9.3 10 Eu-155 415 1.0 434.6 1.0 454.6 1.1 492.2 1.2 618.1 1.5 3358.1 8.1 10 Fe-55 23205 1.0 1.20E+05 5.2 4.45E+05 19.2 1.78E+06 76.6 7. 1 E+06 305.9 1.69E+08 7295.7 12 H-3 2730 1.0 6362.4 2.3 1.57E+05 1.2 4.24E+04 76.6 1313E+05 41.4 1.39E+06 509.5 13 Nb.94 7.6 1.0 7.9 1.0 8.3 1.1 9.1 1.2 11.7 1.5 70.5 9.3 14 NI-59 3216 1.0 1.15E+04 3.6 3.42E+04 10.6 1.37E+05 42.5 5.47E+05 170.0 1.36E+07 4232.2 15 NI-63 1175 1.0 4203.8 3.6 1.25E+04 10.6 4.99E+04 42.5 2.OOE+05 170.0 4.97E+06 4234.7 16 Pu-238 24.1 1.0 46.3 1.9 115.3 4.8 372.7 15.5 932.7 38.7 9284.5 385.2 17 Pu-239 9.2 1.0 16.7 1.8 38.4 4.2 87.5 9.5 214.2 23.3 2312.7 251.4 18 Pu-240 9.5 1.0 17.2 1.8 39.4 4.2 89.8 9.5 219.9 23.2 2367.4 249.2 19 Pu-241 1021 1.0 1881.6 1.8 4433.1 4.3 13950.9 13.7 34525.6 33.8 218086.7 213.7 20 Pu-242 9.6 1.0 17.4 1.8 40.0 4.2 91.3 9.5 223.7 23.3 223.7 23.3 21 Sb-125 33.6 1.0 35.1 1.0 36.8 1.1 40.3 1.2 51.3 1.5 305.2 9.1 22 Sr-90 1.3 1.0 3.1 2.4 8.2 6.3 32.4 24.9 125.9 96.8 2661.4 2047.2 23 Tc-99 11.4 1.0 24.4 2.1 61.3 5.4 242.5 21.3 949.5 83.3 20990.8 1841.3 24 U-234 12.6 1.0 22.8 1.8 51.2 4.1 114.9 9.1 276.3 21.9 2979.5 236.5 25 U-235 12.0 1.0 21.4 1.8 42.3 3.5 72.8 6.1 124.1 10.3 815.4 67.9 26 U-238 13.0 1.0 24.1 1.9 54.0 4 108.5 8.3 237.0 18.2 2257.7 173.7 v v v - - - -- --.-.-.-.

VVwere AAAAA is mne radionuclide name, as an example "AM241".

NOTE: Base case values for 10,000 square meter area is for 25 mremly dose limit

-0 /9/O -d! 'uo!eUue*uuco no n 00/ Ae-a N8 10 -ýTe6ed'0 A8Oj 900-ZO0069'ON uo4Gilelole luo!18u!WBuoO oplowflOA jol soflIeA iO)cJ AppoeqB 03NS 7 r I I r T Average 26 mrom/y Average 25 mrem/y Average 26 mremly mram/, RI::III TR *KMl mA9 jAt mremlhloClla I Limit - nCIla /t DII*i)I II I'i* JAft A*I lIB*. mrmmlhln-l( I 11 l

-1 C-1)l AM-241 6.11E-01 6.20E-01 6.20E-01 0.62 jmr'm"T Kroul. 10-wMZo - 1,-Vu mrmemiv ES.ULTS 10u m'z2 (C) umramlInIPC.I/9 Limit - pC.1ii 40.50 2.54E-01 2.57E-01 2.57E-01 0.26 97.63 7.46E-02 7.55E-02 7.54E-02 0.08 332.67 C-14 1.83E-01 1.81E-01 1.82E-01 0.18 137.29 3.09E-02 3.04E-02 3.06E-02 0.03 Cm-243 6.28E-01 815.75 5.22E-03 4.96E-03 4.96E-03 0.01 4954.42 0.5975 0.596 0.61 41.17 0.361 0.3487 0.3484 0.35 70.88 0.2162 0.2131 0.2134 0.21 116.70 Cm-244 3.51E-01 3.26E-01 3.24E-01 0.33 74.94 1.41E-01 1.31E-01 1.30E-01 0.13 186.43 3.62E-02 3.37E-02 3.35E-02 0.03 725.90 Co-60 5.359 5.334 5.372 5.36 4.67 4.837 4.83 4.853 4.84 5.17 4.323 4.315 4.336 4.32 5.78 Cs-134 3.161 3.165 3.179 3.17 7.89 2.666 2.665 2.677 2.67 9.37 2.315 2.311 2.322 2.32 10.79 Cs-137 1.563 1.546 1.555 1.55 16.08 1.198 1.188 1.197 1.19 20.93 0.9922 0.986 0.9939 0.99 25.23 Eu-152 2.231 2.226 2.237 2.23 11.20 2.128 2.138 2.093 2.12 11.79 1.939 1.948 1.906 1.93 12.95 Eu-154 2.418 2.413 2.425 2.42 10.34 2.296 2.292 2.303 2.30 10.88 2.093 2.089 2.099 2.09 11.94 Eu-155 5.75E-02 5.74E-02 5.77E-02 5.75E-02 4.35E+02 5.50E-02 5.49E-02 5.51 E-02 5.50E-02 4.55E+02 5.08E-02 5.07E-02 5.09E-02 5.08E-02 4.92E+02 Fe-55 2.07E-04 2.06E-04 2.1OE-04 2.08E-04 1.20E+05 5.62E-05 5.56E-05 5.69E-05 5.62E-05 4.45E+05 1.41E-05 1.39E-05 1.42E-05 1.41E-05 1.78E+06 H-3 3.92E-03 3.93E-03 3.93E-03 3.93E-03 6.36E+03 1.60E-03 1.59E-03 1.60E-03 1.60E-03 1.57E+04 6.05E-04 5.94E-04 5.87E-04 5.95E-04 4.20E+04 Nb.94 3.153 3.136 3.161 3.15 7.94 2.997 2.981 3.006 2.99 8.35 2.735 2.72 2.743 2.73 9.15 NI-59 2.19E-03 2.18E-03 2.16E-03 2.17E-03 1.15E+04 7.41E-04 7.27E-04 7.27E-04 7.32E-04 3.42E+04 1.85E-04 1.822-04 1.822-04 1.83E-04 1.37E+05 NI-63 5.98E-03 5.96E-03 5.90E-03 5.95E-03 4.20E+03 2.03E-03 1.992-03 1.99E-03 2.00E-03 1.25E+04 5.07E-04 4.97E-04 4.981-04 5.01E-04 4.992+04 Pu-238 0.5498 0.5406 0.5305 0.54 46.27 0.2206 0.2169 0.2129 0.22 115.31 7.31 E-02 6.76E-02 6.04E-02 0.07 372.73 Pu-239 1.529 1.48 1.489 1.50 16.67 0.7024 0.6113 0.6416 0.65 38.36 0.2968 0.2735 0.287 0.29 87.48 Pu-240 1.486 1.439 1.447 1.46 17.15 0.683 0.5944 0.6238 0.63 39.45 0.29 0.2659 0.279 0.28 89.83 Pu-241 1.33E-02 1.33E-02 1.33E-02 0.01 1881.59 5.62E-03 5.67E-03 5.63E-03 0.01 4433.15 1.78E-03 1.82E-03 1.78E-03 0.00 13950.89 Pu-242 1.465 1.419 1.427 1.44 17.40 0.6733 0.5859 0.6149 0.62 40.02 0.2845 0.2622 0.275 0.27 91.27 Sb-125 7.14E-01 7.10E-01 7.16E-01 0.71 35.05 6.80E-01 6.76E-01 6.82E-01 0.68 36.81 6221E-01 6.18E-01 6.23E-01 0.62 40.27 Sr-90 8.127 7.834 7.887 7.95 3.14 3.132 3.013 3.036 3.06 8.17 0,7902 0.76 0.7661 0577 32.38 Tc-99 1.01 E+00 1.03 1.031 1.02 24.40 0.4033 0.4094 0.4103 0.41 61.32 1.02E-01 1.03E-01 1.04E-01 0. 10 242.48 U-234 1.097 1.081 1.107 1.10 22.83 0.5013 0.4975 0.465 0.49 51.24 0.2211 0.2272 0.2045 0.22 114.89 U-235 1.225 1.127 1.16 1.17 21.36 0.6076 0.5934 0.5726 0.59 42.29 0.345 0.3475 0.3381 0.34 72.77 U-238 1.046 1,022 1.041 1.04 24.12 4.98E-01 0.4311 0.4594 U.46 54.02 0.2384 0.2215 0.2316 0.23 108.T6

, O6 e6 0 ^e>J '00-0-0069 'ON uooulln31UO'!eu!We1u o oUw,w nlOA Jol senleA -IE)bo Al!lpej 03NS Average 25 mremly Average 25 mremly Limit - pCit9 mremlv RESULTS 1 mA2 (E) mrem/hlpCllg Limit - pCIlg mremlv RESULTS 25 M^2 (D) mremlhlpCllg 0.03 914.63 3.92E-03 3.92E-03 3.97E-03 0.00 6388.42 2.72E-02 2.74E-02 2.74E-02 0.00 23614.61 5.40E-05 4.53E-05 4.73E-05 0.00 511596.18 1.15E-03 1.01E-03 1.01E-03 0.1467 0.15 170.42 2.44E-02 2.44E-02 2.45E-02 0.02 1023.47 0.1471 0.1463 0.01 2662.69 1.11E-03 1.08E-03 1.06E-03 0.00 23091.13 9.83E-03 9.20E-03 9.14E-03 3.345 3.339 3.355 3.35 7.47 5.40E-01 5.39E-01 5.41 E-01 0.54 46.31 1.785 1.793 1.79 13.98 2.95E-01 2.95E-01 2.96E-01 0.30 84.70 1.788 0.7562 0.752 0.7581 0.76 33.09 0.1242 0.1235 0.1245 0.12 201.50 1.522 1.489 1.51 16,57 0.2495 0.2507 0.2453 0.25 100.60 1.515 1.629 1.626 1.633 1.63 15.34 0.2641 0.2636 0.2649 0.26 94.63 4.04E-02 6.18E+02 7.44E-03 7.43E-03 7.46E-03 7.44E-03 3.36E+03 4.04E-02 4.04E-02 4.06E-02 3.52E-06 3.48E-06 3.57E-06 3.52E-06 7.10E+06 1.48E-07 1.46E-07 1.49E-07 1.48E-07 1.69E+08 2.24E-04 2.18E-04 2.21E-04 2.21E-04 1.13E+05 1.81 E-05 1.78E-05 1.80E-05 1.80E-05 1.39E+06 2.141 2.129 2.147 2.14 11.69 3.55E-01 3.53E-01 3.56E-01 0.35 70.48 4.63E-05 4.54E-05 4.55E-05 4.57E-05 5.47E+05 1.86E-06 1.82E-06 1.83E-06 1.84E-06 1.36E+07 1.27E-04 1.24E-04 1.25E-04 1.25E-04 2.OOE+05 5.09E-06 4.99E-06 SO.E-06 5.03E-06 4.97E+06 2.96E-02 2.60E-02 2.49E-02 0.03 932.72 2.87E-03 2.62E-03 2.59E-03 0.00 9284.48 0.1176 0.1152 0.1173 0.12 214.22 1.07E-02 1.07E-02 1.11E-02 0.01 2312.67 0.1149 0.112 0.1141 0.11 219.94 1.04E-02 1.04E-02 1.08E-02 0.01 2367.42 7.21 E-04 7.29E-04 7.23E-04 0.00 34525.62 1.15E-04 1.14E-04 1.15E-04 0.00 218086.65 0.1125 0.1104 0.1124 0.11 223.68 1.13E-01 1.10E-01 1.12E-01 0.11 223.68 4.88E-01 4.85E-01 4.89E-01 0.49 51.28 8.20E-02 8.16E-02 8.22E-02 0.08 305.21 0.2032 0.1955 0.1971 0.20 125.88 9.56E-03 9.32E-03 9.31E-03 0.01 2661.37 2.61E-02 2.63E-02 2.66E-02 0.03 949.49 1.19E-03 1.19E-03 1.19E-03 0.00 20990.76 9.08E-02 9.07E-02 9.OOE-02 0.09 276.26 6.29E-03 8.60E-03 8.29E-03 0.01 2979.50 0.2031 0.1999 0.2015 0.20 124.07 3.08E-02 3.09E-02 3.03E-02 0.03 815.39 0.1057 0.1046 0.106 0.11 2 1.1OE-02 1.09E-02 1.13E-02 0 2257.68

'SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 13:59 Paqe 23

-obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: AM241.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 1.154E+00 2 0.000E+00 1.173E+00 3 0.OOOE+00 1.172E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page! of 32-4 B. Brosey, 2/5102 ' .? , P. Donnachie, 2/5/02 y/-.

ATTACHMENT - J-

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 15:21 Paqe 23 cobabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: AM241 DW.RAD times Peak of the mean dose (averaqed over observations) at graphical

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 1.000E+03 2.112E-02 2 1.OOOE+03 1.991E-02 3 7.586E+02 2.020E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 32- of 3

B. Brosey, 2/5/02 Y .  ; P. Donnachie, 2/5/02 t*/,*

ATTACHMEN]

SRAD, Version 6.1 Ti Limit = 0.5 vear 01/26/2002 14:19 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: AM241A.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.112E-01 2 0.OOOE+00 6.204E-01 3 0.OOOE+00 6.201E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page*m of __._

B. Brosey, 2/5/02 -, , r'7,,.. . P. Donnachie, 2/5/02 t/l AT-ACGHMENT -"

SRAD, Version 6.1 Ti Limit = 0.5 year 01/26/2002 14:27 Paqe 23 obabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: AM241B.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.537E-01 2 0.OOOE+00 2.573E-01 3 0.OOOE+00 2.572E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page R of 32<

B. Brosey, 2/5/02 * ,= -*%--* P. Donnachie, 2/5/02 ATTACHMENT ,

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 14:44 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep AM241C.RAD Contam. Z ne File:

Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 7.456E-02 2 0.OOOE+00 7.545E-02 3 0.OOOE+00 7.544E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_ of ______

B. Brosey, 2/5/02 3  ; P. Donnachie, 2/5/02 ,Vi9 ATTACHMENT L?"- 6

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 14:56 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: AM241D.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/Vr 1 0.000E+00 2.719E-02 2 0.OOOE+00 2.740E-02 3 0.OOOE+00 2.741E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_,.? of 3 B. Brosey, 2/5/02 * . P. Donnachie, 2/5/02 ATTACHMEN-7 "2- 4

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 15:05 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: AM241E.RAD Peak of the mean dose (averaged over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 3.915E-03 2 0.OOOE+00 3.920E-03 3 0.000E+00 3.905E-03 6900-02-008, Rev 0,,fJ!z SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 2/5/02 Page of 32.

..I . P. Donnachie, B. Brosey, 2/5/02 ATTACHMEK.7 F .

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 15:31 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 9.139E-01 2 0.OOOE+00 9.080E-01 3 0.OOOE+00 9.148E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-- of 2 B. Brosey, 2/5/02 . - P. Donnachie, 2/5/02 f'LR A7TACHMENT,-

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 16:12 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak meaai dose Peak mean dose Years mrem/vr 1 1.OOOE+00 3.933E-03 2 1.445E+00 3.442E-03 3 3.OOOE+00 4.187E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_.f? of B. Brosey, 2/5/02 ' B N* ------ P. Donnachie, 2/5/02 ,/&

A, ACOHME N +/---

-SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 15:38 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14A.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.827E-01 2 0.OOOE+00 1.813E-01 3 0.OOOE+00 1.823E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page.__j& of . Z<

B. Brosey, 2/5/02 -LI. - P. Donnachie, 2/5/02 . .,/A' A7ACHMEWT .

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 15:43 Paqe 23 cobabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

.ie File: C14B.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 3.093E-02 2 0.OOOE+00 3.041E-02 3 0.OOOE+00 3.060E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej.L of ?2" B. Brosey, 2/5/02 " P. Donnachie, 2/5/02 ra..

PJ ACONHMENT}-2

ESRAD, Version 6.1 T*i Limit = 0.5 Vear 01/26/2002 15:50 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14C.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.223E-03 2 0.OOOE+00 4.960E-03 3 0.OOOE+00 4.955E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page Y 2- of "__.__

B. Brosey, 2/5/02 . - P. Donnachie, 2/5/02 CA p

AT AICHENIT :V /i.

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 15:56 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14D.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.151E-03 2 0.OOOE+00 1.013E-03 3 0.OOOE+00 1.012E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. ',. of __.___

B. Brosey, 2/5/02 a5 -  ; P. Donnachie, 2/5/02MI/

A~TAC~~.F 7 - ./3

ESRAD, version 6.1 T4 Limit = 0.5 year 01/26/2002 16:04 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C14E.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.403E-05 2 0.OOOE+00 4.532E-05 3 0.OOOE+00 4.725E-05 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page2_*ý of -3 2 B. Brosey, 2/5/02 * " P. Donnachie, 2/5/02 A-A, ME7 -

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 16:22 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: CM243.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/Vr 1 0.OOOE+00 1.012E+00 2 0.OOOE+00 9.804E-01 3 0.OOOE+00 1.010E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page "/ of .___,_

B. Brosey, 2/5/02 * - P. Donnachie, 2/5/02 /4/

,SRAD, Version 6.1 Ti Limit = 0.5 Vear 01/26/2002 16:41 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM243 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/yr 1 5.248E+02 2.036E-03 2 5.248E+02 2.087E-03 3 5.248E+02 2.035E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page L71 of B. Brosey, 2/5/02 * " P. Donnachie, 2/5/02 MR ATAOM-E- /6-

!SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 18:00 Page 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM243A.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.283E-01 2 0.OOOE+00 5.975E-01 3 0.OOOE+00 5.960E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ./'- of "

B. Brosey, 2/5/02 cZ ' "T-.-.- - P. Donnachie, 2/5/02

.A77 I7 'jý' - L -L ý

ISRAD, Version 6.1 T4 Limit = 0.5 vear 01/26/2002 18:28 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: CM243B.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 3.610E-01 2 0.OOOE+00 3.487E-01 3 0.OOOE+00 3.484E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej* of "

B. Brosey, 2/5/02 3. T*_*  ; P. Donnachie, 2/5/02 NIP.

A-JA.1MB\

'SRAD, Version 6.1 Tl Limit = 0.5 Vear 01/26/2002 18:38 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM243C.RAD Peak of the mean dose (averaqed over observations) at graphical times

)petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.162E-01 2 0.OOOE+00 2.131E-01 3 0.OOOE+00 2.134E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. of 32-.

B. Brosey, 2/5/02 7B

• P. Donnachie, 2/5/02

ISRAD, Version 6.1 Ti Limit = 0.5 year 01/26/2002 18:47 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM243D.RAD Peak of the mean dose (averaqed over observations) at graphical times mpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.471E-01 2 0.OOOE+00 1.463E-01 3 0.OCOE+00 1.467E-01 SNEC Facility DCGL Values for Volumetric Contamination, ;Calculation P. Donnachie,

-/P 0, Page 6900-02-008, Rev No. 2/5/02 *" of32 B. Brosey, 2/5/02 3 ,

SRAD, Version 6.1 T*i Limit = 0.5 year 01/26/2002 18:57 Paqe 23 "obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z te File: CM243E.RAD Peak of the mean dose (averaged over observations) at graphical times

!Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.444E-02 2 0.OOOE+00 2.439E-02 3 0.OOOE+00 2.445E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page.3"-/ of ____

B. Brosey, 2/5/02 * . - , P. Donnachie, 2/5/02 N.

A 7 AC(- rvrL..7 ad

-SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 19:13 Paqe 23

-obabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM244.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OCOE+00 6.308E-01 2 0.O0OE+00 6.195E-01 3 0.OOOE+00 6.752E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ý_-2 of B. Brosey, 2/5/02 . P. Donnachie, 2/5/02 n/*

--A(T7 MEN-

.,SRAD, Version 6.1 T11 Limit = 0.5 Vear 01/26/2002 19:26 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM244 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.248E+02 4.760E-03 2 5.248E+02 4.521E-03 3 5.248E+02 4.536E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ,43 of 32.,

B. Brosey, 2/5/02 - .- ýý

• P. Donnachie, 215/02_

A7Ai-UNENJ 7 - 23

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 19:38 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM244A.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 3.508E-01 2 0.OOOE+00 3.260E-01 3 0.OOOE+00 3.243E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page *-/ of .

B. Brosey, 2/5/02 . - *. P. Donnachie, 2/5/02 Cij Q AT~i~~7 7--2~+/-

SRAD, Version 6.1 Ti Limit = 0.5 year 01/26/2002 19:46 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CM244B.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of perx mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 1.409E-01 2 0.OOOE+00 1.311E-01 3 0.OOOE+00 1.303E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ._5 of 32* "

B. Brosey, 2/5/02 P. Donnachie, 2/5/02

SRAD, 'Version 6.1 T4 Limit = 0.5 vear 01/26/2002 19

53 Paqe 23 obabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z Le File: CM244C.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.616E-02 2 0.OOOE+00 3.368E-02 3 0.OOOE+00 3.348E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pageq-6 of B. Brosey, 2/5/02 3 . *21 *  ; P. Donnachie, 2/5/02 r/'

V ýý .LJAJI U.4 1-2 J~j.LLItLL, - VJ.J YecdL UI/~/h0 UU4 z; j V k'd(.e 4.3

obabilistic results sumary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CM244D.RAD Peak of the mean dose (averaqed over observations) at graphical times Bpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 9.828E-03 2 0.OOOE+00 9.201E-03 3 0.OOOE+00 9.138E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page _.7 of B. Brosey, 2/5/02 "* . .-  ; P. Donnachie, 2/5/02 ri/PZ khoh

.ESRAD," Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 20:05 Paqe 23

'robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: CM244E.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.109E-03 2 0.OOOE+00 1.077E-03 3 0.OOOE+00 1.062E-03 6

SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page e2 of B. Brosey, 2/5/02 ' . Ž 3---'---.- P. Donnachie, 2/5/02 H/Ay

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 20:24 Paqe 23 robabilistic results s,:mmarV : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C060.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.389E+00 2 0.OOOE+00 6.434E+00 3 0.OOOE+00 6.438E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 59* of -3_

B. Brosey, 2/5/02 -R .

• P. Donnachie, 2/5/02 Pli, NI~ ~ E- .2.9

'C

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 20:33 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C060 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 1.318E+01 5.111E-06 2 1.905E+01 3.677E-06 3 1.905E+01 3.924E-06 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page _. of 3c-S B. Brosey, 2/5/02 IB *2 - _;P. Donnachie, 2/5/02 N/P-P\570-1E'Na3

• SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 20:43 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CO60A.RAD Peak of the mean dose (averaged over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 5.359E+00 2 0.OOOE+00 5.334E+00 3 0.OOOE+00 5.372E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 6/ of 3 t.*

B. Brosey, 2/5/02 --. R P. Donnachie, 2/5/02 N/I-A ,:--I- ' 3- &

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 20:55 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: C060B.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.837E+00 2 0.OOOE+00 4.830E+00 3 0.OOOE+00 4.853E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page

• _. of-___-"_

B. Brosey, 2/5/02 , **Tu,-,-.,--

-:B-, -- P. Donnachie, 215/02 rj,° A7MCHMEW, 7--I!_--

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 20:57 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CO60C.RAD Peak of the mean dose (averaged over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.323E+00 2 0.OOOE+00 4.315E+00 3 0.OOOE+00 4.336E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 63' of 329-B. Brosey, 2/5/02 -R . Li% ;P. Donnachie, 2/5/02 N/(

I-,7t Iiýý r

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T -33

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 21:01 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: C060D.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/Vr 1 0.OOOE+00 3.345E+00 2 o.OOOE+00 3.339E+00 3 0.OOOE+00 3.355E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page* of__2-/

B. Brosey, 2/5/02 ýý - -- P. Donnachie, 2/5/02

_*.- MI T.AHC*., *'E 7E 3',

ESRAD, Version 6.1 TI Limit = 0.5 year 01/26/2002 21:04 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CO60E.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.397E-01 2 0.OOOE+00 5.386E-01 3 0.OOOE+00 5.412E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 6-5" of ____

B. Brosey, 2/5/02 * -. , P. Donnachie, 2/5/02 N1,2

ESRAD, Version 6.1 T4 Limit = 0.5 vear 01/26/2002 21:12 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: CS134.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.897E+00 2 0.OOOE+00 4.871E+00 3 0.OOOE+00 4.878E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 66 of __-___

B. Brosey, 2/5/02 - .: P. Donnachie, 2/5/02 IV/R pJ7..r~~ V 36

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 21:25 Paqe 23

obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CS134 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/yr 1 6.310E+00 4.651E-10 2 3.OOOE+00 3.222E-09 3 9.120E+00 2.940E-10 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page _._. of -`2 B. Brosey, 2/5/02 ."

• P. Donnachie, 2/5/02 olp-37

SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 21

30 Paqe 23

obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: CS134A.RAD Peak of the mean dose (averaqed over observations) at graphical times mpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.161E+00 2 0.OOOE+00 3.165E+00 3 0.000E+00 3.179E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_ of B. Brosey, 2/5/02 -_.___ "_"__----_-'- ;P. Donnachie, 2/5/02 V A7. ~~E7

SRAD, Version 6.1 Ti Limit = 0.5 Vear 01/26/2002 21:32 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CSI34B.RAD Peak of the mean dose (averaqed over observations) at graphical times

Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.666E+00 2 0.OOOE+00 2.665E+00 3 0.OOOE+00 2.677E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No, 6900-02-008, Rev 0, Page ? of _

B. Brosey, 2/5/02 '_-,3 - - x'-  ; P. Donnachie, 2/5/02 A//r, d

T4 Limit = 0.5 year 01/26/2002 21:36 Paqe 23

?SRAD, Version 6.1 & 1 m Deep Contam. Z

obabilistic results summary  : SNEC Soil DCGLs (10000 m2) ie File: CSI34C.RAD times Peak of the mean dose (averaqed over observations) at graphical

ýpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 2.315E+00 2 0.OOOE+00 2.311E+00 3 0.OOOE+00 2.322E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page - - of _-____

B. Brosey, 2/5/02 ,_ , p E-

• P. Donnachie, 2/5/02 (vr/

"* t*  :"

-" 7--*,

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 21:38 Paqe 23

-obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CSl34D.RAD Peak of the mean dose (averaqed over observations) at graphical times mpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 1.788E+00 2 0.OOOE+00 1.785E+00 3 0.OOOE+00 1.793E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 71 of _ '_

B. Brosey, 2/5/02 3 ."-.*,,'--" F P. Donnachie, 2/5/02 -x AT....... 7- '(

&SRAD, Version 6.1 T¶i Limit = 0.5 year 01/26/2002 21:40 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CS134E.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.951E-01 2 0.OOOE+00 2.945E-01 3 0.OOOE+00 2.959E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page - 2 of _2.

B. Brosey, 2/5/02 3 . -;*---- P. Donnachie, 2/5/02 Me f~r.2.C~

TW< - '2

ISRAD, Version 6.1 T4 Limit = 0.5 vear 01/26/2002 21:45 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: CS137. RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.873E+00 2 0.OOOE+00 2.857E+00 3 0.OOOE+00 2.854E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page *3 of ______

B. Brosey, 2/5/02 - "--- p- -  ; P. Donnachie, 2/5/02 1,,*

MAD, Version 6.1 TI Limit = 0.5 year 01/26/2002 21:51 Paqe 23 SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

)babilistic results summarvy File: CS137 DW.RAD the mean dose (averaqed over observations) at graphical times Peak of

)etition Time of peak mean dose Peak mean dose Years mrem/vr 1 8.318E+01 2.419E-07 2 8.318E+01 1.658E-07 3 8.318E+01 2.141E-07 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 7---'-of 3*

B. Brosey, 2/5/02 j ,i .)Ž- *--" 5 P. Donnachie, 2/5/02

[ f\GL  :' __'_' _..

SRAD, Version 6.1 T4 Limit = 0.5 vear 01/26/2002 21:55 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CS137A.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.563E+00 2 0.OOOE+00 1.546E+00 3 0.OOOE+00 1.555E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 7* of 32<

B. Brosey, 2/5/02 * . i-. -- P. Donnachie, 2/5/02 N/

SRAD, Version 6.1 Tl Limit = 0.5 year 01/26/2002 21:59 Paqe 23 obabilistic results summarv  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CSI37B.RAD times Peak of the mean dose (averaqed over observations) at graphical petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.198E+00 2 0.OOCE+00 1.188E+00 3 0.000E+00 1.197E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page - of B. Brosey, 2/5/02 7:B , -, .  ; P. Donnachie, 2/5/02 rjz 0

-j~

Lý11'

3RAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 22:03 Paqe 23 Dbabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z a File: CS137C.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 9.922E-01 2 0.000E+00 9.860E-01 3 0.OOOE+00 9.939E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-7 off B. Brosey, 2/5/02 "_ _._ _ _ _ 'P. Donnachie, 2/5/02 r.Lin

T4 Limit = 0.5 year 01/26/2002 22:07 Paqe 23 3RAD, Version 6.1 m2) & 1 m Deep Contam. Z SNEC Soil DCGLs (10000

)babilistic results summarv: File: CSI37D.RAD at graphical times Peak of the mean dose (averaqed over observations)

Detition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOE+00 7.562E-01 2 0.OOOE+00 7.520E-01 3 0.OO0E+00 7.581E-01 of SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej B. Brosey, 2/5/02 E  ; P. Donnachie, 2/5/02 Ni I I_ -________________

SRAD, Version 6.1 T4 Limit = 0.5 vear 01/26/2002 22:10 Paqe 23 obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: CS137E.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 1.242E-01 2 0.OOOE+00 1.235E-01 3 0.OOOE+00 1.245E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page___ of 31 B. Brosey, 2/5/02 . ;P. Donnachie, 2/5/02

[7 1 7

Paqe 23Z T* Limit = 0.5 year 01/26/2002 22:19 Contam.

EU152. RAD P 1AD, 1sion 6.1 i Deep at graphical times

)babil- .Lc results summary : SNEC Soil DCGLS (10000 m2) & 1 File:

observations)

Peak of the mean dose (averaqed over dose Time of peak mean dose Peak mean

)etition mrem/yr Years 1 0.OOOE+00 2.309E+00 2 0.OOOE+00 2.304E+00 3 0.000E+00 2.315E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 6S0O of __.._

P. Donnachie, 2/5/02 (1 -/P B. Brosey, 2/5/02 ..

• f .,i ', ... 7-

SRAD,*tersion 6.1 T4 Limit = 0.5 year 01/26/2002 22:31 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: EU152 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.754E+01 2.262E-08 2 5.754E+01 2.293E-08 3 3.500E+01 5.148E-08 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page*_ of 3zzý B. Brosey, 2/5/02 .

. P. Donnachie, 2/5/02

ie* - - -- 1-1Y - OL'......, 0-1+/- LJu.,ijs (iUUUU mZ) & I m Deep Contain. Z File:

Peak of the mean dose (averaqed over observations) EU152A.RAD at graphical times

petition Time of peak mean dose Peak mean dose Years mrem/yr 1 O.OOOE+00 2.231E+00 2 O.OOOE+00 2.226E+00 3 O.OOOE+00 2.237E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page o.'& of B. Brosey, 2/5/02 ;a P. Donnachie, 2/5/02 r1 r-

EýRAD., Version 6.1 T4 Limit = 0.5 year 01/26/2002 22:49 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: EU152B.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.128E+00 2 0.OOOE+00 2.138E+00 3 0.OOOE+00 2.093E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page____ of 3Z*

B. Brosey, 2/5/02 ... P. Donnachie, 2/5/02 r,/e r, '.*.j-*-. * '.6.**3

j+/-+/- u tjU.UUuu m/-) & i m Deep Contam. Z e File: EU152C.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 1.939E+00 2 O.000E+00 1.948E+00 3 O.OOOE+00 1.906E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page .* of 3*Z.

B. Brosey, 2/5/02 7 ' P. Donnachie, 2/5/02 N LiO',-

m

ie S........ w.

. . u k IVUUU mz) & +/- m Deep Contam. Z Peak of the mean dose (averaqed over observations) File: EU152D.RAD petition Time of peak mean dose at graphical times Peak mean dose Years mrem/vr 1 O.OOOE+00 2 1.515E+00 O.OOOE+00 1.522E+00 3 O.OOOE+00 1.489E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ,5 of B. Brosey, 2/5/02 "H P. Donnachie, 2/5/02,.

-[

/I if7# illr'.-

SRAD, 'Version 6.1 Tv Limit = 0.5 year 01/26/2002 23

09 Paqe 23

-obabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z te File: EU152E.RAD Peak of the mean dose (averaqed over observations) at graphical times mDetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.495E-01 2 0.OOOE+00 2.507E-01 3 0.OOOE+00 2.453E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 8 . of _ "

B. Brosey, 2/5/02 . " - - - P. Donnachie, 2/5/02 '/Jj r

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 23:18 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: EU154.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.504E+00 2 0.OOOE+00 2.500E+00 3 0.OOOE+00 2.511E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page &7 of _-____

B. Brosey, 2/5/02 .: P. Donnachie, 2/5/02 /V/.

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 23

25 Paqe 23 obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1File: m Deep Contam. Z

.e EU154 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.754E+01 1.411E-08 2 3.981E+01 9.013E-09 3 2.754E+01 3.414E-08 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page &b of ___

B. Brosey, 2/5/02 a u,_---

• P. Donnachie, 2/5/02

/77. -:s_

e .U-  %*VV

• I LU uontam. z ueeP EU154A.RAD File:

Peak of the mean dose (averaqed over observations) petition Time of peak mean dose at graphical times Peak mean dose Years mrem/vr 1 0.000E+00 2.418E+00 2 0.OOOE+00 2.413E+00 3 0.OOOE+00 2.425E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page co? of B. Brosey, 2/5/02 3, __ __ P. Donnachie, 2/5/02 Hi P

SRAD, Version 6.1 TI Limit = 0.5 year 01/26/2002 23

31 Paqe 23 7obabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z File: EU154B.RAD ie graphical times Peak of the mean dose (averaqed over observations) at

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.296E+00 2 0.OOOE+00 2.292E+00 3 0.OOOE+00 2.303E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page._.j of B. Brosey, 2/5/02 . : \"---,-..p , P. Donnachie, 2/5/02 .41 17 "-<- ...

.SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 23:34 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: EU154C.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 2.093E+00 2 0.OOOE+00 2.089E+00 3 0.OOOE+00 2.099E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageiLL of .

B. Brosey, 2/5/02 * . P. Donnachie, 2/5/02 N1

SRAD, Version 6.1 Ti Limit = 0.5 year 01/26/2002 23

36 Paqe 23 obabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

,e File: EU154D.RAD Peak of the mean dose (averaqed over observations) at graphical times

!Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 1.629E+00 2 0.000E+00 1.626E+00 3 0.OOOE+00 1.633E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page q._2 of __2.-

B. Brosey, 2/5/02 , -$ -- '-----.>-- P. Donnachie, 2/5/02 //

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 23:38 Paqe 23 obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: EU154E.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.641E-01 2 0.OOOE+00 2.636E-01 3 0.OOOE+00 2.649E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page *-3 of 3L, B. Brosey, 2/5/02 . r -- .- .. ;P. Donnachie, 2/5/02 r4I f I __

SRAD, Version 6.1 Ti Limit = 0.5 Vear 01/26/2002 23:41 Paqe 23 obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: EU155.RAD at graphical times Peak of the mean dose (averaqed over observations)

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.014E-02 2 0.OOOE+00 6.006E-02 3 0.OOOE+00 6.033E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-LL...of 325 B. Brosey, 2/5/02 S , Tk-.  ; P. Donnachie, 2/5/02 r'jP

ESRAD, Version 6.1 TI Limit = 0.5 vear 01/26/2002 23:44 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: EU155 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.905E+01 6.569E-10 32 2.754E+01 1.905E+01 2.541E-10 1.591E-09 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page______ of "r__-_

B. 8rosey, 2/5/02 3  ; P. Donnachie, 2/5/02 .J/Z..

P,7r-, TE -r 65-£

SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 23:48 Paqe 23 obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z File: EU155A.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.750E-02 2 0.000E+00 5.741E-02 3 0.OOOE+00 5.768E-02 No. 6900-02-008, Rev 0, Page___ of 322' SNEC Facility DCGL Values for Volumetric Contamination, Calculation B. Brosey, 2/5/02 * .!ýS )

• P. Donnachie, 2/5/02 ,-IuZ A - A . ,4M - T. - 4

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/26/2002 23:51 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: EU155B.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.000E+00 5.497E-02 2 0.OOOE+00 5.487E-02 3 0.OOOE+00 5.513E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_2t- of 2<

B. Brosey, 2/5/02 . P. Donnachie, 2/5/02 12/

A' 7--

ýSRAD, Version 6.1 T4 Limit = 0.5 Vear 01/26/2002 23:53 Paqe 23

obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: EUI55C.RAD Peak of the mean dose (averaqed over observations) at graphical times

,Petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 5.078E-02 2 0.000E+00 5.068E-02 3 0.OOOE+00 5.093E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_ ____ of ,__.._

B. Brosey, 2/5/02 * ." - . 'P. Donnachie, 2/5/02 &,/0 f7Tf-rO'-'rNr 6

ESRAD, Version 6.1 Ti Limit = 0.5 year 01/26/2002 23:56 Paqe 23 cobabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: EUI55D.RAD Peak of the mean dose (averaqed over observations) at graphical times 3petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.043E-02 2 0.OOOE+00 4.036E-02 3 0.OOOE+00 4.055E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 9'? of 3 Z.

B. Brosey, 2/5/02 , .- r  ; P. Donnachie, 2/5/02 ,v/2

SRAD, Version 6.1 T; Limit = 0.5 year 01/26/2002 23:59 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z File: EU155E.RAD e times Peak of the mean dose (averaqed over observations) at graphical petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 7.442E-03 2 0.OOOE+00 7.428E-03 3 0.OOOE+00 7.464E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page f.CZ) of __._

B. Brosey, 2/5/02 25 -.--. - _

• P. Donnachie, 2/5/02 AT~x~l~\, ~ -o

ESRAD, Version 6.1 TviLimit = 0.5 year 01/27/2002 13:23 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deed Contam. Z ie File: FE55.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.073E-03 2 0.OOOE+00 1.074E-03 3 0.OOOE+00 1.085E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. O.. of ___.._

B. Brosey, 2/5/02 Y-.r,-.-.---*....-  ; P. Donnachie, 2/5/02 IVA

'SRAD, Version 6.1 T' Limit = 0.5 year 01/27/2002 13:25 Paqe 23

ýobabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

'ie File: FE55 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.98!E+01 8.105E-17 2 1.318E+01 1.454E-13 3 3.931E+01 3.424E-16 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page -Cc2 of -,2s B. Brosey, 2/5/02 - - P. Donnachie, 2/5/02 tJ I

[\Hf~. 7e

SRAD, Version 6.1 Ti Limit = 0.5 Vear 01/27/2002 13

31 Paqe 23

• obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: FE55A.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 2.071E-04 2 0.OOOE+00 2.060E-04 3 0.OOOE+00 2.097E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page .1o, of B. Brosey, 2/5/02 .- P. Donnachie, 2/5/02 [v/i.

A>:~

• SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 13:38 Paqe 23

-obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: FE55B.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 5.615E-05 2 0.OOOE+00 5.555E-05 3 0.OOOE+00 5.691E-05 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageLQ'* of 3 -"

B. Brosey, 2/5/02 '.Zý f.-.  ; P. Donnachie, 2/5/02 f/,r.

0

-. " n.-..-

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 13:42 Paqe 23 obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z Le File: FE55C.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.405E-05 2 0.OOOE+00 1.390E-05 3 0.OOOE+00 1.424E-05 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pageq.-'Sof 32 B. Brosey, 2/5/02 a . > . P. Donnachie, 2/5/02 /1Z

ESRAD, Version 6.1 T4 Limit = 0.5 vear 01/27/2002 13:50 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: FE55D.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.519E-06 2 0.OOOE+00 3.481E-06 3 0.OOOE+00 3.566E-06 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page ._10 of 3 2_

B. Brosey, 2/5/02 ýDI ,;z 3 P. Donnachie, 2/5/02 fV/9

,SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 13:52 Paqe 23

-obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: FE55E.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 1.476E-07 2 0.OOOE+00 1.460E-07 3 0.OOOE+00 1.494E-07 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PagelO__.-. of 3 Z<

B. Brosey, 2/5/02 a--- .* *  ; P. Donnachie, 2/5/02 (4

e --------. us summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep File:Contaim.

H3.RADZ Peak of the mean dose (averaqed over observations) apetition Time of Peak mean dose at graphical times Peak mean dose Years mrem/vr 1 0.000E+00 9.156E-03 2 0.OOOE+00 9.140E-03 3 0.OOOE+00 9.176E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel._ of B. Brosey, 2/5/02 * . P. Donnachie, 2/5/02 ,M/

/-.7

MSRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 14:16 Paqe 23

obabilistic results summarV  : SNEC Soil DCGLs (10000 m2) & I m Deep Contam. Z ie File: H3 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

?Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.089E+00 2.704E-03 2 2.089E+00 2.737E-03 3 2.089E+00 2.773E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-1C of _,_2__

B. Brosey, 2/5/02 2 *

• P. Donnachie, 2/5/02

/ 77

PSRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 14:24 Page 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: H3A.RAD Peak of the mean dose (averaged over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.923E-03 2 0.OOOE+00 3.932E-03 3 0.000E+00 3.933E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page Z 20 of _.

B. Brosey, 2/5/02 ` ,-ýS  ; P. Donnachie, 2/5/02 Njr-

":- ' -, "1 r'*- j' .

i*SRAD, Version 6.1 Ti Limit = 0.5 year 01/27/2002 14:33 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: H3B.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.600E-03 2 0.000E+00 1.586E-03 3 0.OOOE+00 1.604E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_._..- of _. *

• , -.- -- Ž -- P. Donnachie, 2/5/02 r Iof B. Brosey, 2/5/02 -

~I:

ISRAD, Version 6.1 Tk Limit = 0.5 year 01/27/2002 14:38 Paqe 23

obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: H3C.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 1.OOOE+00 6.047E-04 2 1.000E+00 5.938E-04 3 1.445E+00 5.869E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel-- 2 of ___.__

B. Brosey, 2/5/02

• B . - . - P. Donnachie, 2/5/02 ,j"1

/---.

SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 14

45 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z te File: H3D.RAD Peak of the mean dose (averaqed over observations) at graphical times mpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 1.OOOE+00 2.236E-04 2 1.OOOE+00 2.184E-04 3 1.445E+00 2.214E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 1 13 of 32-<*

B. Brosey, 2/5/02 * * - 1/0 P. Donnachie, 25/2

ýSRAD, Version 6.1 T;I Limit = 0.5 year 01/27/2002 14:50 Paqe 23

• obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: H3E.RAD Peak of the mean dose (averaqed over observations) at graphical times tDetition Time of peak mean dose Peak mean dose Years mrem/yr 1 1.445E+00 1.812E-05 2 1.445E+00 1.777E-05 3 1.445E+00 1.803E-05 Ii SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej of 32 B. Brosey, 2/5/02 . %5 Y P. Donnachie, 2/5/02 r'lZ

'SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 14:59 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: NB94.RAD Peak of the mean dose (averaqed over observations) at graphical times

?Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.279E+00 2 0.OOOE+00 3.261E+00 3 0.OOOE+00 3.288E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_____of B. Brosey, 2/5/02 .3. Xw -  ; P. Donnachie, 2/5/02 /If 7-Br

,SRAD, Version 6.1 Ti Limit = 0.5 year 01/27/2002 15:08 Paqe 23

.obabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1File: m Deep Contam. Z ie NB94 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times mDetition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.512E+02 7.416E-03 2 2.512E+02 7.603E-03 3 2.512E+02 7.659E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page i of B. Brosey, 2/5/02 3..- , -.----. ,- P. Donnachie, 2/5/02 N/g fTU.c-; 7K& ________ ..

-SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 15:13 Paqe 23 robabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: NB94A.RAD Peak of the mean dose (averaqed over observations) at graphical times 9petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 3.153E+00 2 0.OOOE+00 3.136E+00 3 0.OOOE+00 3.161E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page__i__- of 3 2.

B. Brosey, 2/5/02 35 . :1 P. Donnachie, 2/5/02 r4 I At71 Cr-:rEr-T 4 --

SRAD, Version 6.1 Ti Limit = 0.5 year 01/27/2002 15:23 Paqe 23 obabilistic results summary  : SNEC Soil DCGLs (10000 m2) & I m Deep Contam. Z e File: NB94B.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.997E+00 2 0.OOOE+00 2.981E+00 3 0.OOOE+00 3.006E+00 6900-02-008, Rev 0,0 Page SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 2/5/02 lf 1. _of Ls__

. Ž* T. - . P. Donnachie, B. Brosey, 2/5/02 r7

,j I[J  ;, ______,______-_

.SRAD, Version 6.1 T* Limit = 0.5 year 01/27/2002 15:34 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: NB94C.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.735E+00 2 0.OOOE+00 2.720E+00 3 0.OOOE+00 2.743E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagei- .9 of 3 2!;

B. Brosey, 2/5/02 --* -ý6  ; P. Donnachie, 2/5/02 J/Z

[7Y alt

&S.AD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 Paqe 23 15:40 Contam.

Deep Z

,obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m NB94D.RAD ie File:

at graphical times Peak of the mean dose (averaqed over observations)

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.141E+00 2 0.OOOE+00 2.129E+00 3 0.OO0E+00 2.147E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel 2C of 3 -

B. Brosey, 2/5/02 * . -L-- ..... . P. Donnachie, 2/5/02 /g/r, Alr7T1~' 7 -qO

Ti Limit = 0.5 year 01/27/2002 15:48 Paqe 23 SRAD, Version 6.1 Contam. Z obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep File: NB94E.RAD e at graphical times Peak of the mean dose (averaqed over observations) petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 3.550E-01 2 0.OOOE+00 3.531E-01 3 0.OOOE+00 3.560E-01 0, Page 6900-02-008, Rev /1J, SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 2/5/02 i*i oof

-B :T-'71--, ;P. Donnachie, B. Brosey, 2/5/02

PSRAD, Version 6.1 T4 Limit = 0.5 vear 01/27/2002 15:59 Paqe 23

obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: N159.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.000E+00 7.696E-03 2 0.OOOE+00 7.957E-03 3 0.OOOE+00 7.671E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel 22 of _,_--_

B. Brosey, 2/5/02 "- . Ti:* * ,  ; P. Donnachie, 2/5/02 r411

• SRAD, Version 6.1 T; Limit = 0.5 year 01/27/2002 16:06 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: N159 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/Vr 1 2.291E+03 8.250E-06 2 3.311E+03 8.621E-06 3 3.311E+03 8.460E-06 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page.-? 3 of. .32 B. Brosey, 2/5/02 5 - -  ; P. Donnachie, 2/5/02 rj ,-

fTi"C 9'I

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 16:14 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: NI59A.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.185E-03 2 0.OOOE+00 2.177E-03 3 0.OOOE+00 2.155E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_2 '/ of 327 B. Brosey, 2/5/02 ..- , ,  ; P. Donnachie, 2/5/02 pJ*

• J If\-ýt ,r,---7

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 16:29 Paqe 23

-obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: N159B.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 7.410E-04 2 0.OOOE+00 7.265E-04 3 0.OOOE+00 7.272E-04 12-of SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page] 32 C B. Brosey, 2/5/02 , M.-.-,--  ; P. Donnachie, 2/5/02 V

ESRAD, Version 6.1 T¶i Limit = 0.5 year 01/27/2002 16:34 Paqe 23 robabilistic results summary S:'NEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: N159C.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.853E-04 2 0.OOOE+00 1.816E-04 3 0.OOOE+00 1.818E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel Z. of ___-__

B. Brosey, 2/5/02 * . *;*.-.-.-----. P. Donnachie, 2/5/02 Mr,

PSRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 16:39 Page 23

obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: NI59D.RAD Peak of the mean dose (averaged over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.633E-05 2 0.OOOE+00 4.542E-05 3 0.OOOE+00 4.546E-05 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page- 727 of 32 B. Brosey, 2/5/02 . .  ; P. Donnachie, 2/5/02 0 i?-

SRAD, Version 6.1 T*i Limit = 0.5 Vear 01/27/2002 16:44 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z File: N159E.RAD e graphical times Peak of the mean dose (averaqed over observations) at petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.861E-06 2 O.000E+00 1.824E-06 3 0.OOOE+00 1.826E-06 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 1 of B. Brosey, 2/5/02 - .-

.*  ; P. Donnachie, 2/5/02 rif/

ESRAD, Version 6.1 T4 Limit = 0.5 vear 01/27/2002 16:51 Paqe 23 robabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: N163.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.107E-02 2 0.OOOE+00 2.178E-02 3 O.OOOE+00 2.100E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel *? of 3 2.

B. Brosey, 2/5/02 3 . *'*-,---- - P. Donnachie, 2/5/02

ISRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 16:58 Paqe 23

obabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: N163 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.512E+02 1.176E-07 2 3.OOOE+02 1.148E-07 3 2.512E+02 1.126E-07 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-ll30 of32" B. Brosey, 2/5/02 : , 7;- - ;P. Donnachie, 215/02 rIP

- v -

f,7~C tiK ~ /0

01/27/2002 17:03 Contam. Paqe 23 SRAD, Version 6.1 T4 Limit = 0.5 Vear Z obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 mFile: Deep N163A.RAD at graphical times Peak of the mean dose (averaqed over observations) petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.983E-03 2 0.OOOE+00 5.960E-03 3 0.OOOE+00 5.898E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-31 ofT B. Brosey, 2/5/02 3 . ._ - P. Donnachie, 2/5/02 tIz p /rnE\Yii 10 /

ISRAD, Version 6.1 Tl-Limit = 0.5 year 01/27/2002 17:13 Paqe 23

-obabilistic results summary : SNEC Soil DCGLs (10000 m2) & I m Deep Contam. Z ie File: NI63B.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 0.OOOE+00 2.029E-03 2 0.OOOE+00 1.989E-03 3 0.OOOE+00 1.991E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. 1 B. Brosey, 2/5/02 ,* * -- 'P. Donnachie, 2/5/02 riP,

.-of C:j - T. ig

'SRAD, Version 6.1 T* Limit = 0.5 year 01/27/2002 17:17 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z le File: NI63C.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak medn dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.072E-04 2 0.OOOE+00 4.973E-04 3 0.OOOE+00 4.977E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 133 of B. Brosey, 2/5/02 IZ , ..j- P Donnachie, 2/5/021 0

ýSRAD, Version 6.1 T-i Limit = 0.5 year 01/27/2002 17:21 Paqe 23 Contam. Z

.obabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep NI63D.RAD ie File:

times Peak of the mean dose (averaqed over observations) at graphical

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.268E-04 2 0.000E+00 1.243E-04 3 0.OOOE+00 1.245E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. 13 of 32*C*

B. Brosey, 2/5/02 - 1 .  ; P. Donnachie, 2/5/02 NIRZ A,2r,': ID

SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 17:26 Paqe 23 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: N163E.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.091E-06 2 0.OOOE+00 4.991E-06 3 0.OOOE+00 4.996E-06 SNEC Facility DCGL Values for Volumetrc Contamination, Calculation No. 6900-02-008, Rev 0, Pageq-1 3-of '

B. Brosey, 215102 3- .  ; P. Donnachie, 2/5/02 (1I A7-""

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 17:35 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU238.RAD times Peak of the mean dose (averaqed over observations) at graphical epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.058E+00 2 0.OOOE+00 1.040E+00 3 0.OOOE+00 1.019E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 136 of 32-,.,&

B. Brosey, 2/5/02 .*. , y-" - -; P. Donnachie, 2/5/02 rQ1 ,.

XT7AC1N~-_

,e *. .... .. -  %-tvvuu m4) & i in ueep Uontam. Z File: PU238 DW.RAD Peak of the mean dose (averaqed over observations) petition Time of peak mean dose at graphical times Peak mean dose Years mrem/vr 1 1.738E+02 1.805E-01 2 1.738E+02 1.897E-01 3 1.738E+02 1.874E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, B. Brosey, 2/5/02 Rev 0, Page .3J7 of 3 2,5 3 - *  ; P. Donnachie, 2/5/02 rJ F" A7Tf c-z;;- /o Z.

tPSRAD, Version 6.1 Tl Limit = 0.5 year 01/27/2002 17:44 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU238A.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 5.498E-01 2 0.OOOE+00 5.406E-01 3 0.OOOE+00 5.305E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page'i '. of ______

B. Brosey, 2/5/02 i ,- 7 ,,., --. P. Donnachie, 2/5/02 wl'

ESIRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 17:53 Paqe 23 cobabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU238B.RAD Peak of the mean dose (averaqed over observations) at graphical times Bpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 2.206E-01 2 0.OOOE+00 2.169E-01 3 0.OOOE+00 2.129E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej-_I__ of -____

B. Brosey, 2/5/02 . ?. -' , --  ; P. Donnachie, 2/5/02 rJ1'.

A7A,-'v-*,c;~ .._ .

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 18:04 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU238C.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 8.318E+01 7.314E-02 2 8.318E+01 6.764E-02 3 8.318E+01 6.044E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page JiO9of ?2*

B. Brosey, 2/5/02 a-*-  ; P. Donnachie, 2/5/02 *Ip 1- 7' ___ i.

]SRAD, Version 6.1 Tk Limit = 0.5 year 01/27/2002 18:10 Paqe 23

-obabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU238D.RAD Peak of the mean dose (averaqed over observations) at graphical times Bpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 8.318E+01 2.955E-02 2 8.318E+01 2.599E-02 3 1.202E+02 2.487E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagej't i of 32' B. Brosey, 2/5/02 - " P'-- .- - P. Donnachie, 2/5/02 ,'J1,.

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 18:16 Paqe 23

-obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU238E.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 8.318E+01 2.874E-03 2 5.754E+01 2.618E-03 3 5.754E+01 2.586E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-J- Z. of ,324'5 B. Brosey, 2/5/02 2 .- P. Donnachie, 2/5/02 N/0.

SRAD, Version 6.1 T4 Limit = 0.5 year l/2//ZUUZ .[ib:zL eaqe 43 obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: PU239.RAD Peak of the mean dose (averaqed over observations) at graphical times petition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.631E+02 2.757E+00 2 3.631E+02 2.702E+00 3 3.631E+02 2.690E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageJ 33 of 32.-..5 B. Brosey, 2/5/02 I,ý *.  ; P. Donnachie, 2/5/02 tI i~j '7* 13

'SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 18:33 Page 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU239 DW.RAD Peak of the mean dose (averaged over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.248E+02 1.791E+00 2 5.248E+02 1.758E+00 3 5.248E+02 1.833E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page!_ of.___"

B. Brosey, 2/5/02 S .- ',-- "- P. Donnachie, 2/5/02 NIl

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 18:38 Paqe 23

obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU239A.RAD Peak of the mean dose (averaqed over observations) at graphical times 3petition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.6?!E+02 1.529E+00 2 3.6 1E+02 1.480E+00 3 3.(31E+02 1.489E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_.$7offZ*'

B. Brosey, 215/02 "* , P. Donnachie, 2/5/02 t.I P

ESRAD, Version 6.1 TI Limit = 0.5 Vear 01/27/2002 18:44 Paqe 23 robabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU239B.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 7.024E-01 2 3.631E+02 6.113E-01 3 3.631E+02 6.416E-01

'I4ý SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-. of :RZ,5 B. Brosey, 2/5/02 *

• P. Donnachie, 2/5/02 ,vh(

A777--\2KM**-,"7L- I 41.

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 18:51 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU239C.RAD Peak or the mean dose (averaqed over observations) at graphical times epetition Time of pD-k mean dose Peak mean dose

".ears mrem/vr 1 3.631E+02 2.968E-01 2  ?.631E+02 2.735E-01 3 3.631E+02 2.870E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageJ-f of 3 24*

B. Brosey, 2/5/02 :3  ; P. Donnachie, 2/5/02 cliP..

ESRAD, Version 6.1 Tý2 Limit = 0.5 year 01/27/2002 19:04 Paqe 23 robabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU239D.RAD times Peak of the mean dose (averaqed over observations) at graphical epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 1.176E-01 2 3.631E+02 1.152E-01 3 3.631E+02 1.173E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page..iw of 3' B Broev 2/5/02 7 -ý * - .T P. Donnachie, 2/5/02 /'/ýZ

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 19:08 Paqe 23 robabilistic results sum arV : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU239E.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 1.069E-02 2 3.OOOE+02 1.069E-02 3 3.OOOE+02 1.105E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation P.

No. 6900-02-008, Rev Donnachie, 2/5/02 4yo0, Page i--l of ?

• B. Brosey, 2/5/02 .- P --...

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 19:17 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU240.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 2.681E+00 2 3.631E+02 2.627E+00 3 3.631E+02 2.616E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageI,5 f .3 2_.'o B. Brosey, 2/5/02 3 -*  ; P. Donnachie, 2/5/02 p1l z FPG-fE 120

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 19:50 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU240 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.248E+02 1.720E+00 2 5.248E+02 1.688E+00 3 5.248E+02 1.760E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page. 2- of -3Z5 B. Brosey, 2/5/02 * . T. 0

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ESRAD, Version 6.1 T4 Limit = 0.5 vear 01/27/2002 19:59 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU240A.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 1.486E+00 2 3.631E+02 1.439E+00 3 3.631E+02 1.447E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page16 Z of B. Brosey, 2/5/02 . z , P. Donnachie, 2/5/02 -'1?

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ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 20:12 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU240B.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 6.830E-01 2 3.631E+02 5.944E-01 3 3.631E+02 6.238E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel. 53 of 3,z5' B. Brosey, 2/5/02 ,'... -  ; P. Donnachie, 2/5/02 tI ,,2.

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• SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 20:18 Paqe 23 cobabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

'ie File: PU240C.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 2.900E-01 2 3.631E+02 2.659E-01 3 3.631E+02 2.790E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 11-5/ of "

B. Brosey, 2/5/02 * - P. Donnachie, 2/5/02 1-

PSRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 20:25 Paqe 23

,obabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU240D.RAD Peak of the mean dose (averaqed over observations) at graphical times

?petition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 1.149E-01 2 3.631E+02 1.120E-01 3 3.631E+02 1.141E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page____5_ of .32"_'g B. Brosey, 2/5/02 B - P. Donnachie, 2/5/02 r'i[

ESRAD, Version 6.1 Ti Limit = 0.5 Vear 01/27/2002 20:32 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU240E.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 1.044E-02 2 3.OOOE+02 1.044E-02 3 2.512E+02 1.080E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page . -:of -*Z*

B. Brosey, 2/5/02 . -* ' P. Donnachie, 2/5/02 til

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ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 20:42 Paqe 23 robabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU241.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.754E+01 2.449E-02 2 3.500E+01 2.446E-02 3 3.500E+01 2.453E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page of B. Brosey, 2/5/02 2 , .P. Donnachie, 2/5/02 tjI r,*,*c:** -- F - I

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ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 20:51 Page 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU241 DW.RAD Peak of the mean dose (averaged over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 7.586E+02 1.123E-03 2 7.586E+02 1.026E-03 3 1.000E+03 9.370E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageJ-5.' of B. Brosey, 2/5/02 "Z .-*;S aY-,-,,,, P. Donnachie, 2/5/02 i141 P 77- 12

ESRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 20:59 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU241A.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.500E+01 1.325E-02 2 3.981E+01 1.330E-02 3 3.981E+01 1.331E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageL of B. Brosey, 2/5/02 7* '- ---.- ,

• P. Donnachie, 2/5/02 ij V-

ýSRAD, Version 6.1 T'i Limit = 0.5 year 01/27/2002 21:08 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU241B.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.981E+01 5.622E-03 2 3.981E+01 5.667E-03 3 3.981E+01 5.629E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 2-- of *Z5 "

B. Brosey, 2/5/02 , T.----.-- _. P. Donnachie, 2/5/02 P'1o p

ZSRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 21:17 Paqe 23 cobabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

'ie File: PU241C.RAD times Peak of the mean dose (averaqed over observations) at graphical 2petition Time of Peak mean dose Peak mean dose Years mrem/vr 1 5.754E+01 1.778E-03 2 3.981E+01 1.821E-03 3 5.754E+01 1.777E-03 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 1-(a6-of 3 ZK B. Brosey, 2/5/02 -3 .7 - P. Donnachie, 2/5/02 tq ¢'t fF§-,Jffi /3/

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 21:26 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU241D.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.754E+01 7.207E-04 2 3.981E+01 7.287E-04 3 5.754E+01 7.229E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_. e- of 32.'4 B. Brosey, 2/5/02 , B ,---'-- '  ; P. Donnachie, 2/5/02 di M

PSRAD, Version 6.1 Ti Limit = 0.5 year 01/27/2002 21:37 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU241E.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.754E+01 1.147E-04 2 5.754E+01 1.141E-04 3 5.754E+01 1.151E-04 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page______-of _.__

B. Brosey, 2/5/02 . *;____3-______

P. Donnachie, 2/5/02 1-

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'SRAD, Version 6.1 T* Limit = 0.5 year 01/27/2002 22:01 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: PU242.RAD Peak of the mean dose (averaqed over observations) at graphical times

ýpetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.631E+02 2.642E+00 2 3.631E+02 2.589E+00 3 3.631E+02 2.578E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page__"_ of ____

B. Brosey, 2/5/02 > )!: ,- C)2  ; P. Donnachie, 2/5/02 WtlZ

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 22:10 Paqe 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU242 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 5.248E+02 1.724E+00 2 5.248E+02 1.692E+00 3 5.248E+02 1.764E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page______ of _2__

B. Brosey, 2/5/02 .5-- -" P. Donnachie, 2/5/02 111 C)

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ESRAD, Version 6.1 Ti Limit = 0.5 Vear 01/27/2002 22:17 Paqe 23 robabilistic results summarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU242A.RAD times Peak of the mean dose (averaqed over observations) at graphical apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 1.465E+00 2 3.631E+02 1.419E+00 3 3.631E+02 1.427E+00 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel-X, of B. Brosey, 2/5/02 c . P. Donnachie, 2/5/02 11.i S....... I 2t K-,2-. 117z,-"J3-.. . .

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 22:26 Page 23 robabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU242B.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 6.733E-01 2 3.631E+02 5.859E-01 3 3.631E+02 6.149E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page_-____ of 32-5__

B. Brosey, 2/5/02  !  ; P. Donnachie, 2/5/02 tJIl -

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ESRAD, Version 6.1 T'i Limit = 0.5 year 01/27/2002 22:35 Paqe 23 robabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU242C.RAD times Peak of the mean dose (averaqed over observations) at graphical epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.631E+02 2.845E-01 2 3.631E+02 2.622E-01 3 3.631E+02 2.750E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page____._ of 3 _

B. Brosey, 2/5/02 . *P. Donnachie, 2/5/02 JJP-

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 22:44 Paqe 23 robabilistic results summary  : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ae File: PU242D.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/yr 1 3.OOOE+02 1.125E-01 2 3.631E+02 1.104E-01 3 3.6 IE+02 1.124E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page of_-32 of 5 B. Brosey, 2/5/02 .1B P. Donnachie, 2/5/02 elJ11

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 22:52 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: PU242E.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 3.OOOE+02 1.023E-02 2 3.OOOE+02 1.023E-02 3 3.OOOE+02 1.058E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-A +O of 32 B. Brosey, 2/5/02 * . ,-.-- P. Donnachie, 2/5/02

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ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 23:03 Paqe 23 robabilistic results summarv: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: SB125.RAD Peak of the mean dose (averaqed over observations) at graphical times epetition Time of peak mean dose Peak mean dose YEirs mrem/vr 1 0.0 OE+00 7.451E-01 2 0.rJOE+00 7.409E-01 3 0.OOE+00 7.469E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page- 7? ilof . S;2 4" B. Brosey, 2/5/02 -,-;a . 7  !, -  ; P. Donnachie, 2/5/02 I/ g f.7

ESRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 23:07 Paqe 23 robabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ne File: SB125 DW.RAD times Peak of the mean dose (averaqed over observations) at graphical epetition Time of peak mean dose Peak mean dose Years mrem/vr 1 9.120E+00 4.196E-07 2 9.120E+00 2.769E-07 3 6.310E+00 3.437E-07 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page.I H?-of :_

B. Brosey, 2/5/02 < ,- ---  ; P. Donnachie, 2/5/02 t'l r-

7SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 23:10 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: SBI25A.RAD Peak o' the mean dose (averaqed over observations) at graphical times

ýpetition Time of pe.k mean dose Peak mean dose

• ears mrem/yr 1 0 OOOE+00 7.139E-01 2 0.OOOE+00 7.100E-01 3 0.OOOE+00 7.158E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page.-7"of30 B. Brosey, 2/5/02_ 3 .'--- ---

• P. Donnachie, 2/5/02 11/3

TI Limit = 0.5 vear 01/27/2002 23:15 Paqe 23

SRAD, Version 6.1 m2) & 1 m Deep Contam. Z

.obabilistic results summary : SNEC Soil DCGLs (10000 File: SB125B.RAD of the mean dose (averaqed over observations) at graphical times Peak

!Petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.797E-01 2 0.OOOE+00 6.761E-01 3 0.OOOE+00 6.816E-01 of SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, PageJ B. Brosey, 2/5/02 -. -:13 P. Donnachie, 215/02 141A S,. -... :' -' - 1,

SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 23:18 Paqe 23 obabilistic results summ:fv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z e File: SB125C.RAD times Peak o0 the mean dose (averaqed over observations) at graphical petition Time of oc-.ak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 6.212E-01 2 0.OOOE+00 6.180E-01 3 0.OOOE+00 6.230E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page 1 Of B. Brosey, 2/5/02 " , P. Donnachie, 215102 I/r

,SRAD, Version 6.1 T4 Limit = 0.5 year 01/27/2002 23:22 Page 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: SB125D.RAD Peak of the mean dose (averaqed over observations) at graphical times

!petition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 4.879E-01 2 0.OOOE+00 4.853E-01 3 0.OOOE+00 4.893E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel.-74 of B. Brosey, 2/5/02 . ..  ; P. Donnachie, 2/5/02 */i p-r't' L5 -

Version 6.1 f4 Limit = 0.5 Vear 01/27/2002 23:26 Page 23

ýSRAD, cobabilistic results sr.mnmarv : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

'ie File: SBI25E.RAD Peak of the mean dose (averaged over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 8.197E-02 2 0.OOOE+00 8.155E-02 3 0.OOOE+00 8.221E-02 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-f- " of B. Brosey, 2/5/02 -*  ; P. Donnachie, 2/5/02  !'eI l

BSRAD, Version 6.1 Ti Limit = 0.5 year 01/27/2002 23:32 Paqe 23 robabilistic results summary: SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z

.ie File: SR90.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 0.OOOE+00 1.936E+01 2 0.OOOE+00 1.883E+01 3 0.OOOE+00 1.887E+01 27 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Page-I of __-,__

B. Brosey, 2/5/02 3 ,S  ; P. Donnachie, 2/5/02 /N If - _

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?SRAD, Version 6.1 T4 Limit = 0.5 Vear 01/27/2002 23:36 Paqe 23

obabilistic results summary : SNEC Soil DCGLs (10000 m2) & 1 m Deep Contam. Z ie File: SR90 DW.RAD Peak of the mean dose (averaqed over observations) at graphical times apetition Time of peak mean dose Peak mean dose Years mrem/vr 1 2.754E+01 5.875E-01 2 2.754E+01 6.045E-01 3 2.754E+01 6.070E-01 SNEC Facility DCGL Values for Volumetric Contamination, Calculation No. 6900-02-008, Rev 0, Pagel-? q of B. Brosey, 2/5/02 3 .  ; P. Donnachie, 2/5/02 ,'-1/£

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