Appendix F

Building 29 Data Package Molycorp Washington, PA Building 29 Data Package

This data package contains final status survey information for Building 29, Molycorp, Washington, PA site.

Field data collection forms, survey report forms, statistical test results, and comparisons to release limits are provided.

Summary

During the final status survey of Building 29, elevated radioactivity was identified in multiple localized areas on the concrete floor and on several structural support components of the building (purlins). The building's classification was changed from unaffected to affected, and an affected final status survey was performed.

It was determined that the activity identified on the floor was fixed into the concrete, and required surface removal of the concrete in the identified areas. The activity identified on the purlins was also determined to be fixed contamination. The structural integrity of the building was evaluated without the affected purlins (removed due to fixed contamination). It was concluded that the purlins needed to remain in place until building demolition.

The areas on the purlins, identified as contaminated, have been marked with a bright florescent paint and recorded as being contaminated in a log controlled by the project manager. These contaminated purlins will remain in place until just prior to building demolition.

Remediation of the concrete was performed. All post-remedial surveys indicated that remediation activities were successful, and that all the affected concrete was removed.

Elevated levels of background radiation, from soil radioactivity, continued to be a presence during survey activities of Building 29.

Results from the final status survey of Building 29 provides evidence that release criteria have been met, demonstrates that residual radioactivity is below the unrestricted use criteria, and confirms that Building 29 is suitable for unrestricted use, excluding the contaminated purlins that will be removed just prior to building demolition. Results of Surface Scans Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

F1 1500 30 10 3.6 F2 1500 30 11 4.6 F3 1550 80 9 2.6 F4 1600 130 12 5.6 F5 1600 130 12 5.6 F6 1600 130 8 1.6 F7 1800 330 14 7.6 F8 1700 230 12 5.6 F9 1450 -20 13 6.6 F10 1650 180 10 3.6 F1l 1600 130 11 4.6 F12 1500 30 8 1.6 F13 1600 130 14 7.6 F14 1550 80 12 5.6 F15 1600 130 12 5.6 F16 1700 230 16 9.6 F17 1700 230 14 7.6 F18 12500 11030 26 19.6 F19 15000 13530 60 53.6 F20 1600 130 12 5.6 F21 1300 -170 12 5.6 F22 1700 230 10 3.6 F23 1750 280 15 8.6 F24 1700 230 12 5.6 F25 4000 2530 20 13.6 F26 12000 10530 16 9.6 F27 1800 330 14 7.6 F28 1800 330 11 4.6 F29 1700 230 12 5.6 F30 1650 180 8 1.6 F31 1600 130 13 6.6 F32 1900 430 15 8.6 F33 13000 11530 84 77.6 F34 5000 3530 22 15.6 F35 3600 2130 30 23.6 F36 2300 830 12 5.6 F37 1700 230 9 2.6 F38 1470 0 10 3.6 F39 1600 130 16 9.6 F40 1800 330 14 7.6 F41 1780 310 12 5.6 F42 1600 130 10 3.6 F43 1600 130 13 6.6 F44 1450 -20 8 1.6 F45 1600 130 11 4.6 F46 1700 230 12 5.6 Page 1 of 2 F47 1700 230 12 5.6 F48 2100 630 14 7.6 F49 1900 430 10 3.6 F50 20000 18530 100 93.6 F51 1820 350 14 7.6 F52 1700 230 10 3.6 F53 1550 80 12 5.6 F54 2000 530 14 7.6 F55 1600 130 12 5.6 F56 1600 130 11 4.6 F57 10000 8530 100 93.6 F58 3600 2130 26 19.6 F59 1830 360 12 5.6 F60 1600 130 12 5.6 F61 1600 130 15 8.6 F62 2400 930 14 7.6 F63 1950 480 10 3.6 F64 1800 330 11 4.6 F65 1600 130 12 5.6 F66 1700 230 14 7.6 F67 1600 130 12 5.6 F68 1600 130 12 5.6 F69 1800 330 10 3.6 F70 1700 230 13 6.6 F71 1500 30 14 7.6 F72 1700 230 12 5.6 F73 1800 330 14 7.6 F74 1600 130 15 8.6 F75 13000 11530 20 13.6 F76 6000 4530 15 8.6 F77 1980 510 12 5.6 F78 2000 530 13 6.6 F79 1650 180 11 4.6 F80 1700 230 15 8.6 F81 1620 150 12 5.6 F82 1900 430 10 3.6 F83 2000 530 12 5.6 F84 3200 1730 18 11.6 F85 2300 830 12 5.6 F86 2300 830 14 7.6 F87 1800 330 10 3.6

All floor scans performed with Ludlum 239-1 F (2350-1 No.95359) with 43-37 No. 92503

Floor Monitor Info: Scan MDA Beta - 188 dpm/detector area Scan MDA Alpha - 16 dpm/detector area Scan background Beta - 1470 cpm Scan background Alpha - 6.4 cpm ')etector Eff. Beta - .27 Oetector Eff. Alpha - .207

Page 2 of 2 Results of Surface Scans Molycorp - Building 29 Survey Unit (Affected Area)

Building Walls (Interior)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

W1 300 36 0.6 -0.4 W2 265 1 0.6 -0.4 W3 225 -39 1 0 W4 265 1 1 0 W5 245 -19 0.2 -0.8 W6 250 -14 0.5 -0.5 W7 300 36 1.2 0.2 W8 260 -4 0.4 -0.6 W9 280 16 1 0 W10 300 36 1 0 WI1 220 -44 0.4 -0.6 W12 340 76 1.4 0.4 W13 290 26 1 0 W14 360 96 1.8 0.8 W15 360 96 1 0 W16 330 66 0.5 -0.5 W17 280 16 1 0 W18 290 26 0.4 -0.6 W19 300 36 1 0 W20 310 46 1.8 0.8 W21 320 56 1 0 W22 300 36 1.4 0.4 W23 280 16 0.8 -0.2 W24 300 36 1 0 W25 300 36 1 0 W26 330 66 1.8 0.8 W27 260 -4 1 0 W28 290 26 1 0 W29 270 6 2 1 W30 290 26 1.2 0.2 W31 340 76 1 0 W32 320 56 2 1 W33 300 36 1 0 W34 260 -4 1 0 W35 280 16 2 1 W36 280 16 2 1 W37 270 6 1.6 0.6 W38 260 -4 1.2 0.2 W39 240 -24 1 0 W40 260 -4 1 0 W41 280 16 1.4 0.4 W42 260 -4 2 1 W43 260 -4 1 0 W44 270 6 1 0 W45 280 16 0 -1 Page 1 of 2 W46 300 36 1.2 0.2 W47 310 46 2 1 W48 300 36 3 2 W49 290 26 0 -1 W50 280 16 1 0 W51 280 16 2 1 W52 270 6 1 0 W53 280 16 2 1 W54 260 -4 1 0 W55 260 -4 2 1 W56 240 -24 1 0 W57 250 -14 1 0 W58 240 -24 1 0 W59 200 -64 0 -1 W60 220 -44 0.6 -0.4 W61 220 -44 0.6 -0.4 W62 250 -14 0 -1

All interior wall scans performed with Ludlum 2350-1 No.117014 with 43-106 No. 133866:

Scan MDA Beta - 620 dpm/detector area Scan MDA Alpha - 45 dpm/detector area Scan background Beta - 264 cpm Scan background Alpha - I cpm Detector Eff. Beta - .248 Detector Eff. Alpha - .211

Page 2 of 2 Results of Surface Scans Molycorp - Building 29 Survey Unit (Affected Area)

Building Interior Bathroom

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

WI 300 36 2 W2 280 16 2 1 01 W3 340 76 2 W4 320 56 1 0 F1 350 86 2 C1 300 36 1 0 C2 280 16 1 0

All bathroom scans performed with Ludlum 2350-1 No.117014 with 43-106 No. 133866:

Scan MDA Beta - 620 dpm/detector area Scan MDA Alpha - 45 dpm/detector area Scan background Beta - 264 cpm Scan background Alpha - I cpm Detector Eff. Beta - .248 Detector Eff. Alpha - .211

Page 1 of 1 Results of Surface Scans Molycorp - Building 29 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

C1 260 -4 0 -1 C2 260 -4 0 -1 1 C3 280 16 0 C4 280 16 1 0 C5 280 16 0 C6 260 -4 0 -1 C7 290 26 0 -1 C8 270 6 1.4 0.4 C9 280 16 1 0 C10 270 6 1.2 0.2 C11 280 16 1 0 C12 260 -4 0 -1 C13 280 16 1.4 0.4 C14 290 26 1.6 0.6 C15 290 26 0 -1 C16 290 26 1 0 C17 280 16 2 1 C18 270 6 1 0 C19 270 6 1 0 C20 280 16 2.2 1.2 C21 270 6 1.2 0.2 C22 280 16 2 1 C23 280 16 2 1 C24 290 26 1 0

All ceiling scans performed with Ludlum 2350-1 No.117014 with 43 106 No. 133866:

Scan MDA Beta - 620 dpm/detector area Scan MDA Alpha - 45 dpm/detector area Scan background Beta - 264 cpm Scan background Alpha - 1 cpm Detector Eff. Beta - .248 Detector Eff. Alpha - .211

Page 1 of I Results of Surface Scans Molycorp - Building 29 Survey Unit (Affected Area)

Building Exterior (Walls)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

WI W2 340 76 1 0 W3 W4 W5 W6 340 76 1.5 0.5 W7 W8 W9 300 36 4 3 WI0 Wil W12 W13 380 116 3 2 W14 W15 280 16 4 3 W16 W17 W18 W19 W20 W21 290 26 1 0 W22 W23 W24 W25 W26 W27 W28 W29 W30

All exterior wall scans performed with Ludlum 2350-1 No.117014 with 43-106 No. 133866:

Scan MDA Beta - 620 dpm/detector area Scan MDA Alpha - 45 dpm/detector area Scan background Beta - 264 cpm Scan background Alpha - 1 cpm Detector Eff. Beta - .248 Detector Eff. Alpha - .211

Page 1 of I Elevated Scan Readings Molycorp - Building 29 Survey Unit (Affected Area)

Location Beta Scan Alpha Scan (net cpm) (net cpm)

F18 11030 19.6 F19 13530 53.6 F25 13.6 F26 10530 F33 11530 77.6 F34 3530 15.6 F35 23.6 F50 18530 93.6 F57 8530 93.6 F58 19.6 F75 11530 13.6 F76 4530 W9 (E) 3 W15 (E) 3

Locations F18, 19, 25, 26, 33, 34, 50, 57, 58, 75 and 76 have been remediated.

Page 1 of I Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor (Interior)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) 2 2 2 cpm cpm cpm cpm cpm (dpml/00cm ) 95% CL (dpm/lOOcm ) (dprn/lOOcm )

Fl 364 299 65 78 -13 -115 207 387 -230 F2 370 293 77 78 -1 -9 216 387 -18 F3 372 292 80 78 2 18 218 387 35 F4 350 260 90 78 12 106 225 387 212 F5 373 299 74 78 -4 -35 214 387 -71 F6 320 262 58 78 -20 -177 202 387 -354 F7 378 279 99 78 21 186 231 387 372 F8 377 299 78 78 0 0 217 387 0 F9 352 272 80 78 2 18 218 387 35 Fl0 370 289 81 78 3 27 219 387 53 Fll 333 260 73 78 -5 -44 213 387 -88 F12 335 270 65 78 -13 -115 207 387 -230 F13 333 289 44 78 -34 -301 192 387 -602 F14 324 262 62 78 -16 -142 205 387 -283 F15 392 278 114 78 36 319 240 387 637 F16 348 242 106 78 28 318 302 497 636 F17 392 271 121 78 43 489 314 497 977 F18 742 333 409 78 331 3761 492 497 7523 F19 2711 464 2247 78 2169 24648 1074 497 49295 F20 269 209 60 78 -18 -205 262 497 -409 F21 327 269 58 78 -20 -227 260 497 -455 F22 335 285 50 78 -28 -318 252 497 -636 F23 357 265 92 78 14 159 290 497 318 F24 376 243 133 78 55 625 324 497 1250 F25 489 260 229 78 151 1716 390 497 3432 F26 2098 432 1666 78 1588 18045 930 497 36091 F27 337 259 78 78 0 0 278 497 0 F28 374 295 79 78 1 11 279 497 23 F29 384 238 146 78 68 773 333 497 1545 F30 392 298 94 78 16 182 292 497 364 F31 369 304 65 78 -13 -148 266 497 -295 F32 379 349 30 78 -48 -545 231 497 -1091 F33 8396 1061 7335 78 7257 82466 1918 497 164932 F34 609 272 337 78 259 2943 454 497 5886 F35 383 305 78 78 0 0 278 497 0 F36 402 298 104 78 26 295 300 497 591 F37 345 267 78 78 0 0 278 497 0 F38 435 308 127 78 49 557 319 497 1114 F39 404 359 45 78 -33 -375 247 497 -750 F40 388 231 157 78 79 898 341 497 1795 F41 389 239 150 78 72 818 336 497 1636 F42 315 252 63 78 -15 -170 264 497 -341 F43 370 272 98 78 20 227 295 497 455 F44 323 259 64 78 -14 -159 265 497 -318 F45 369 255 114 78 36 409 309 497 818 F46 353 239 114 78 36 409 309 497 818 F47 373 302 71 78 -7 -80 272 497 -159 F48 356 267 89 78 11 125 288 497 250 F49 378 270 108 78 30 341 304 497 682 F50 6194 595 5599 78 5521 62739 1678 497 125477 F51 330 234 96 78 18 205 294 497 409 F52 343 288 55 78 -23 -261 257 497 -523

Page I of 2 F53 409 319 90 78 12 136 289 497 273 F54 413 326 87 78 9 102 286 497 205 F55 395 314 81 78 3 34 281 497 68 F56 363 295 68 78 -10 -114 269 497 -227 F57 1941 321 1620 78 1542 17523 918 497 35045 F58 729 359 370 78 292 3318 471 497 6636 F59 333 305 28 78 -50 -568 229 497 -1136 F60 337 270 67 78 -11 -125 268 497 -250 F61 365 248 117 78 39 443 311 497 886 F62 509 295 214 78 136 1545 381 497 3091 F63 413 300 113 78 35 398 308 497 795 F64 328 300 28 78 -50 -568 229 497 -1136 F65 317 291 26 78 -52 -591 227 497 -1182 F66 388 299 89 78 11 125 288 497 250 F67 318 273 45 78 -33 -375 247 497 -750 F68 378 280 98 78 20 227 295 497 455 F69 339 274 65 78 -13 -148 266 497 -295 F70 400 253 147 78 69 784 334 497 1568 F71 413 308 105 78 27 307 301 497 614 F72 361 288 73 78 -5 -57 274 497 -114 F73 431 315 116 78 38 432 310 497 864 F74 335 286 49 78 -29 -330 251 497 -659 F75 12621 754 11867 78 11789 133966 2434 497 267932 F76 6981 670 6311 78 6233 70830 1780 497 141659 F77 341 274 67 78 -11 -125 268 497 -250 F78 338 259 79 78 1 11 279 497 23 F79 318 268 50 78 -28 -318 252 497 -636 F80 331 273 58 78 -20 -227 260 497 -455 F81 341 265 76 78 -2 -23 276 497 -45 F82 406 284 122 78 44 500 315 497 1000 F83 414 305 109 78 31 352 305 497 705 F84 715 399 316 78 238 2705 442 497 5409 F85 453 311 142 78 64 727 330 497 1455 F86 435 310 125 78 47 534 317 497 1068 F87 319 282 37 78 -41 -466 239 497 -932

All other building interior floor direct measurements were performed with 2360 No. 156371and 43-89 No. 164832 Beta Alpha Floor Efficiency 0.088 0.153 Floor Background (cpm) 78 2.4 Floor MDA (dpm/1 00 cm2) 497 65

F1-15 direct measurements were performed with 2360 No. 164680 and 43-89 No. 118544 Beta Alpha Floor Efficiency 0.113 0.164 Floor Background (cpm) 78 2.4 Floor MDA (dpm/100 cm2) 387 60

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 2 of 2 Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Walls (Interior)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha ( 2 2 2 cpm cpm cpm cpm cpm (dpmll 00cm ) 95% CL (dpm/lOOcm ) (dpm/lOOcm )

WI 328 310 18 8 10 88 88 140 177 W2 240 204 36 8 28 248 115 140 496 W3 212 191 21 8 13 115 93 140 230 W4 186 213 -27 8 -35 -310 76 140 -619 W5 227 202 25 8 17 150 100 140 301 W6 237 229 8 8 0 0 69 140 0 W7 195 214 -19 8 -27 -239 58 140 -478 W8 255 242 13 8 5 44 79 140 88 W9 243 239 4 8 -4 -35 60 140 -71 Wi0 282 244 38 8 30 265 118 140 531 Wil 240 311 -71 8 -79 -699 138 140 -1398 W12 239 219 20 8 12 106 92 140 212 W13 291 301 -10 8 -18 -159 25 140 -319 W14 264 263 1 8 -7 -62 52 140 -124 W15 265 240 25 8 17 150 100 140 301 W16 284 231 53 8 45 398 135 140 796 W17 332 295 37 8 29 257 116 140 513 W18 261 243 18 8 10 88 88 140 177 W19 268 242 26 8 18 159 101 140 319 W20 208 191 17 8 9 80 87 140 159 W21 278 234 44 8 36 319 125 140 637 W22 230 232 -2 8 -10 -88 42 140 -177 W23 230 247 -17 8 -25 -221 52 140 -442 W24 385 300 85 8 77 681 167 140 1363 W25 641 326 315 8 307 2717 312 140 5434 W26 1400 729 671 8 663 5867 462 140 11735 W27 244 247 -3 8 -11 -97 39 140 -195 W28 229 205 24 8 16 142 98 140 283 W29 260 256 4 8 -4 -35 60 140 -71 W30 260 251 9 8 1 9 72 140 18 W31 226 206 20 8 12 106 92 140 212 W32 222 208 14 8 6 53 81 140 106 W33 255 234 21 8 13 115 93 140 230 W34 212 175 37 8 29 257 116 140 513 W35 286 253 33 8 25 221 111 140 442 W36 300 251 49 8 41 363 131 140 726 W37 215 202 13 8 5 44 79 140 88 W38 234 222 12 8 4 35 78 140 71 W39 182 181 1 8 -7 -62 52 140 -124 W40 187 160 27 8 19 168 103 140 336 W41 226 180 46 8 38 336 127 140 673 W42 254 208 46 8 38 336 127 140 673 W43 212 171 41 8 33 292 121 140 584 W44 212 184 28 8 20 177 104 140 354 W45 220 192 28 8 20 177 104 140 354 W46 199 212 -13 8 -21 -186 39 140 -372 W47 220 216 4 8 -4 -35 60 140 -71 W48 219 239 -20 8 -28 -248 60 140 -496 W49 251 228 23 8 15 133 97 140 265 W50 220 211 9 8 1 9 72 140 18 W51 270 233 37 8 29 257 116 140 513 W52 240 196 44 8 36 319 125 140 637

Page 1 of 2 W53 215 225 -10 8 -18 -159 25 140 -319 W54 218 211 7 8 -1 -9 67 140 -18 W55 209 200 9 8 1 9 72 140 18 W56 199 163 36 8 28 248 115 140 496 W57 163 185 -22 8 -30 -265 65 140 -531 W58 181 174 7 8 -1 -9 67 140 -18 W59 221 235 -14 8 -22 -195 42 140 -389 W60 196 209 -13 8 -21 -186 39 140 -372 W61 216 220 -4 8 -12 -106 35 140 -212 W62 208 247 -39 8 -47 -416 97 140 -832

All building interior wall direct measurements were performed with 2360 No. 164680 and 43-89 No. 118544 Beta Alpha Wall Efficiency 0.113 0.164 Wall Background (cpm) 8 3.7 Wall MDA (dpm/100 cm2) 140 71

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 2 of 2 Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/1 00cm2 ) 95% CL (dpmll 00cm2) (dpm/1 00cm 2 )

C1 251 220 31 23 204 108 140 407 C2 246 211 35 27 239 114 140 478 C3 201 262 -61 -69 -611 126 140 -1221 C4 254 266 -12 -20 -177 35 140 -354 C5 217 225 -8 -16 -142 0 140 -283 C6 228 253 -25 -33 -292 72 140 -584 C7 213 229 -16 -24 -212 49 140 -425 C8 241 216 25 17 150 100 140 301 C9 232 221 11 3 27 76 140 53 C10 230 206 24 16 142 98 140 283 Cl1 213 235 -22 -30 -265 65 140 -531 C12 219 240 -21 -29 -257 63 140 -513 C13 237 217 20 12 106 92 140 212 C14 233 251 -18 -26 -230 55 140 -460 C15 266 248 18 10 88 88 140 177 C16 239 270 -31 -39 -345 83 140 -690 C17 252 237 15 7 62 83 140 124 C18 267 246 21 13 115 93 140 230 C19 265 234 31 23 204 108 140 407 C20 246 229 17 9 80 87 140 159 C21 260 244 16 8 71 85 140 142 C22 285 249 36 28 248 115 140 496 C23 267 271 -4 -12 -106 35 140 -212 C24 260 266 -6 -14 -124 25 140 -248

All ceiling direct measurements were performed with 2360 No. 156371 and 43-89 No. 164832 Beta Alpha Ceiling Efficiency 0.113 0.164 Ceiling Background (cpm) 8 3.7 Ceiling MDA (dpmnl00 cm 2) 140 71

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page I of 1 Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Interior Bathroom

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/100cm2) 95% CL (dpmll00cm) (dpm/1 00cm2)

W1 181 182 -1 8 -9 -80 46 140 -159 W2 258 243 15 8 7 62 83 140 124 W3 297 270 27 8 19 168 103 140 336 W4 221 201 20 8 12 106 92 140 212 C1 272 242 30 8 22 195 107 140 389 C2 223 210 13 8 5 44 79 140 88 F1 404 287 117 78 39 345 242 387 690

All bathroom wall and ceiling direct measurements were performed with 2360 No. 164680 and 43-89 No. 118544 Beta Alpha Efficiency 0.113 0.164 Background (cpm) 8 3.7 MDA (dpm/100 cm2) 140 71

F1 direct measurement was performed with 2360 No. 164680 and 43 89 No. 118544 Beta Alpha Floor Efficiency 0.113 0.164 Floor Background (cpm) 78 2.4 Floor MDA (dpm/100 cm2) 387 60

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 1 of I Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Exterior (Walls and Vents)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/1 00cm2) 95% CL (dpndl 00cm) (dpm/1 0Ocm2)

Wi 228 198 30 8 22 195 107 140 389 W2 214 225 -11 8 -19 -168 30 140 -336 W3 240 205 35 8 27 239 114 140 478 W4 319 299 20 8 12 106 92 140 212 W5 286 284 2 8 -6 -53 55 140 -106 W6 277 265 12 8 4 35 78 140 71 W7 286 259 27 8 19 168 103 140 336 W8 328 274 54 8 46 407 137 140 814 W9 258 260 -2 8 -10 -88 42 140 -177 Wl0 269 237 32 8 24 212 110 140 425 Wil 262 249 13 8 5 44 79 140 88 W12 256 253 3 8 -5 -44 58 140 -88 W13 293 300 -7 8 -15 -133 17 140 -265 W14 265 256 9 8 1 9 72 140 18 W15 228 234 -6 8 -14 -124 25 140 -248 W16 231 200 31 8 23 204 108 140 407 W17 233 209 24 8 16 142 98 140 283 W18 243 224 19 8 11 97 90 140 195 W19 195 196 -1 8 -9 -80 46 140 -159 W20 244 220 24 8 16 142 98 140 283 W21 227 220 7 8 -1 -9 67 140 -18 W22 183 180 3 8 -5 -44 58 140 -88 W23 198 163 35 8 27 239 114 140 478 W24 195 197 -2 8 -10 -88 42 140 -177 W25 193 186 7 8 -1 -9 67 140 -18 W26 210 181 29 8 21 186 106 140 372 W27 250 253 -3 8 -11 -97 39 140 -195 W28 227 181 46 8 38 336 127 140 673 W29 184 185 -1 8 -9 -80 46 140 -159 W30 152 191 -39 8 -47 -416 97 140 -832 V1 238 230 8 8 0 0 69 140 0

All building exterior direct measurements were performed with 2360 No. 156371 and 43-89 No. 164832 Beta Alpha Efficiency 0.113 0.164 Background (cpm) 8 3.7 MDA (dpml1 00 cm2) 140 71

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling-

Page 1 of I Direct Measurements (Total Activity) Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor (Interior) After Remeldal Activities

MDA Direct Alpha (I) Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty 2 95% CL (dpm/100cm 2) (dpm/1OOcm2) cpm cpm cpm cpm cpm (dpm/1 00cm )

F18 330 229 101 78 23 250 285 476 500 338 476 2087 F18 425 251 174 78 96 1043 476 -978 F19 313 280 33 78 -45 -489 224 476 370 F19 368 273 95 78 17 185 280 476 -826 F24 330 290 40 78 -38 -413 231 476 -87 F25 332 258 74 78 -4 -43 263 476 -674 F26 338 291 47 78 -31 -337 238 290 476 630 F26 360 253 107 78 29 315 476 -370 F29 354 293 61 78 -17 -185 251 476 -43 F33 347 271 76 78 -2 -22 264 476 -522 F33 289 235 54 78 -24 -261 245 476 -696 F34 340 294 46 78 -32 -348 237 476 630 F38 366 259 107 78 29 315 290 476 22 F40 358 279 79 78 1 11 267 476 -870 F41 312 274 38 78 -40 -435 229 476 -565 F50 361 309 52 78 -26 -283 243 476 -304 FS0 372 308 64 78 -14 -152 254 476 804 F57 421 306 115 78 37 402 296 476 -1000 F57 355 323 32 78 -46 -500 223 476 391 F58 380 284 96 78 18 196 281 476 22 F62 388 309 79 78 1 11 267 413 F70 391 294 97 78 207 282 476 -500 F71 392 337 55 78 -23 -250 246 476 476 -1043 F75 323 293 30 78 -48 -522 221 -978 F76 336 303 33 78 -45 -489 224 476 -609 F83 311 261 50 78 -28 -304 241 476 -130 F84 328 256 72 78 -6 -65 261 476 -152 F85 319 248 71 78 -7 -76 260 476 -522 F86 354 300 54 78 -24 -261 245 476

After remediation, building interior floor direct measurements were performed with 2224-1 No. 129463 and 43-89 No. 169230 Beta Alpha Floor Efficiency 0.092 0.154 Floor Background (cpm) 78 2.4 2 Floor MDA (dpm/Ioo cm ) 476 66

Page 1 of I Elevated Direct Measurements (Total Activity) and Averaging Results Molycorp - Building 29 Survey Unit (Affected Area)

Location Direct Beta Alpha (1) Direct Over Area Exceeds Limits Average Value Within Limits? 2 2 (dpm/1 00cm ) (dpm/1 (cm2) 2 00cm ) Maximum Average (over I M ) Yes/No F18 3761 7523 F19 24648 49295 F24 1250 F25 1716 3432 F26 18045 36091 F29 1545 F33 82466 164932 F34 2943 5886 F38 1114 F40 1795 F41 1636 F50 62739 125477 F57 17523 35045 F58 3318 6636 F62 1545 3091 F70 1568 F75 133966 267932 F76 70830 141659 F84 2705 5409 F85 1455 F86 1068 W24 (I) 1363 W25 (I) 2717 5434 W26 (I) 5867 11735

F18* 1043 2086 100 No Yes -325 Yes

All elevated direct readings located on the floor have been remediated. *F1 8 averaged after remediation.

All elevated direct readings located on the interior wall structures (purloins) have been marked and identified for removal prior to building demolition.

Page 1 of 1 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/100cm2) 95% CL (dpm/1 00cm2) 95% CL #

F1 -42 32.9 153 -0.2 1.5 12 2 F2 0 10.3 153 2.7 5.5 12 2 F3 12 19.6 153 -0.2 1.5 12 2 F4 -30 28.4 153 -0.2 1.5 12 2 F5 0 10.3 153 2.7 5.5 12 2 F6 48 35.0 153 -0.2 1.5 12 2 F7 -6 15.7 153 -0.2 1.5 12 2 F8 6 15.7 153 -0.2 1.5 12 2 F9 -48 35.0 153 -0.2 1.5 12 2 F1O -24 25.8 153 -0.2 1.5 12 2 F11 -6 15.7 153 -0.2 1.5 12 2 F12 -48 35.0 153 -0.2 1.5 12 2 F13 6 15.7 153 -0.2 1.5 12 2 F14 -272 80.2 153 -0.2 1.5 12 2 F15 -48 35.0 153 -0.2 1.5 12 2 F16 54 36.9 153 2.7 5.5 12 2 F17 12 19.6 153 -0.2 1.5 12 2 F18 30 28.4 153 -0.2 1.5 12 2 F19 -48 35.0 153 -0.2 1.5 12 2 F20 0 10.3 153 -0.2 1.5 12 2 F21 18 22.9 153 2.7 5.5 12 2 F22 -18 22.9 153 2.7 5.5 12 2 F23 48 35.0 153 2.7 5.5 12 2 F24 -42 32.9 153 -0.2 1.5 12 2 F25 -18 22.9 153 2.7 5.5 12 2 F26 0 10.3 153 -0.2 1.5 12 2 F27 6 15.7 153 -0.2 1.5 12 2 F28 -36 30.7 153 -0.2 1.5 12 2 F29 -272 80.2 153 -0.2 1.5 12 2 F30 12 19.6 153 -0.2 1.5 12 2 F31 42 32.9 153 -0.2 1.5 12 2 F32 -72 42.2 153 -0.2 1.5 12 2 F33 90 46.9 153 2.7 5.5 12 2 F34 -54 36.9 153 -0.2 1.5 12 2 F35 12 19.6 153 -0.2 1.5 12 2 F36 18 22.9 153 -0.2 1.5 12 2 F37 -18 22.9 153 -0.2 1.5 12 2 F38 36 30.7 153 -0.2 1.5 12 2 F39 -12 19.6 153 -0.2 1.5 12 2 F40 48 35.0 153 2.7 5.5 12 2 F41 12 19.6 153 2.7 5.5 12 2 F42 -36 30.7 153 -0.2 1.5 12 2 F43 -18 22.9 153 -0.2 1.5 12 2 F44 6 15.7 153 -0.2 1.5 12 2 F45 -24 25.8 153 -0.2 1.5 12 2 F46 42 32.9 153 -0.2 1.5 12 2 F47 30 28.4 153 -0.2 1.5 12 2 F48 -272 80.2 153 -0.2 1.5 12 2 F49 -36 30.7 153 -0.2 1.5 12 2 F50 -60 38.8 153 2.7 5.5 12 2 F51 -272 80.2 153 -0.2 1.5 12 2 F52 24 25.8 153 -0.2 1.5 12 2 Page 1 of 2 F53 48 35.0 153 -0.2 1.5 12 F54 -272 80.2 153 -0.2 1.5 12 F55 30 28.4 153 2.7 5.5 12 F56 24 25.8 153 2.7 5.5 12 F57 18 22.9 153 -0.2 1.5 12 F58 -272 80.2 153 -0.2 1.5 12 F59 24 25.8 153 -0.2 1.5 12 F60 -272 80.2 153 -0.2 1.5 12 F61 36 30.7 153 -0.2 1.5 12 F62 -272 80.2 153 -0.2 1.5 12 F63 24 25.8 153 -0.2 1.5 12 F64 48 35.0 153 2.7 5.5 12 F65 -272 80.2 153 -0.2 1.5 12 F66 6 15.7 153 -0.2 1.5 12 F67 -272 80.2 153 -0.2 1.5 12 F68 18 22.9 153 -0.2 1.5 12 F69 30 28.4 153 -0.2 1.5 12 F70 54 36.9 153 2.7 5.5 12 F71 24 25.8 153 -0.2 1.5 12 F72 -272 80.2 153 -0.2 1.5 12 F73 -272 80.2 153 -0.2 1.5 12 F74 -272 80.2 153 -0.2 1.5 12 F75 0 10.3 153 -0.2 1.5 12 F76 6 15.7 153 2.7 5.5 12 F77 -272 80.2 153 -0.2 1.5 12 F78 0 10.3 153 -0.2 1.5 12 F79 0 10.3 153 -0.2 1.5 12 F80 0 10.3 153 -0.2 1.5 12 F81 78 43.8 153 -0.2 1.5 12 F82 24 25.8 153 2.7 5.5 12 F83 -84 45.4 153 -0.2 1.5 12 F84 -272 80.2 153 -0.2 1.5 12 F85 -90 46.9 153 -0.2 1.5 12 F86 -272 80.2 153 -0.2 1.5 12 F87 -272 80.2 153 -0.2 1.5 12

#2 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (3-26: Beta Alpha Background (cpm) 45 0.07 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 153 12.0

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Walls (Interior)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/1 00cm2) 95% CL

Wi -6 15.5 150 -1.0 3.4 12 W2 0 10.1 150 -1.0 3.4 12 W3 30 28.3 150 -1.0 3.4 12 W4 48 34.9 150 -1.0 3.4 12 W5 12 19.5 150 -1.0 3.4 12 W6 0 10.1 150 -1.0 3.4 12 W7 61 39.0 150 -1.0 3.4 12 W8 -12 19.5 150 1.9 4.6 12 W9 0 10.1 150 -1.0 3.4 12 Wl0 -6 15.5 150 -1.0 3.4 12 Wil 24 25.7 150 -1.0 3.4 12 W12 18 22.8 150 -1.0 3.4 12 W13 -42 32.8 150 -1.0 3.4 12 W14 -24 25.7 150 1.9 4.6 12 W15 -55 37.2 150 -1.0 3.4 12 W16 79 44.1 150 -1.0 3.4 12 W17 85 45.6 150 -1.0 3.4 12 W18 0 10.1 150 -1.0 3.4 12 W19 18 22.8 150 -1.0 3.4 12 W20 -60 38.7 150 -1.0 3.4 12 W21 18 22.8 150 -1.0 3.4 12 W22 -18 22.8 150 1.9 4.6 12 W23 36 30.6 150 -1.0 3.4 12 W24 18 22.8 150 4.8 7.3 12 W25 36 30.6 150 -1.0 3.4 12 W26 67 40.8 150 -1.0 3.4 12 W27 -54 36.9 150 -1.0 3.4 12 W28 -24 25.7 150 -1.0 3.4 12 W29 0 10.1 150 -1.0 3.4 12 W30 -18 22.8 150 -1.0 3.4 12 W31 24 25.7 150 1.9 4.6 12 W32 -49 35.2 150 1.9 4.6 12 W33 97 48.6 150 -1.0 3.4 12 W34 -18 22.8 150 -1.0 3.4 12 W35 60 38.7 150 -1.0 3.4 12 W36 0 10.1 150 1.9 4.6 12 W37 -18 22.8 150 -1.0 3.4 12 W38 6 15.5 150 1.9 4.6 12 W39 -30 28.4 153 -0.17 1.4 14.5 W40 -48 35.0 153 2.7 5.5 14.5 W41 -36 30.8 153 2.7 5.5 14.5 W42 -6 15.7 153 2.7 5.5 14.5 W43 48 35.0 153 -0.17 1.4 14.5 W44 18 23.0 153 -0.17 1.4 14.5 W45 72 42.2 153 -0.17 1.4 14.5 W46 24 25.8 153 -0.17 1.4 14.5

Page 1 of 2 W47 30 28.4 153 2.7 5.5 14.5 2 W48 -24 25.8 153 -0.17 1.4 14.5 2 W49 -36 30.8 153 2.7 5.5 14.5 2 W50 18 23.0 153 2.7 5.5 14.5 2 W51 -6 15.7 153 -0.17 1.4 14.5 2 W52 -24 25.8 153 -0.17 1.4 14.5 2 W53 18 23.0 153 -0.17 1.4 14.5 2 W54 -24 25.8 153 -0.17 1.4 14.5 2 W55 18 23.0 153 -0.17 1.4 14.5 2 W56 -6 15.7 153 -0.17 1.4 14.5 2 W57 -24 25.8 153 -0.17 1.4 14.5 2 W58 -36 30.8 153 2.7 5.5 14.5 2 W59 42 33.0 153 -0.17 1.4 14.5 2 W60 30 28.4 153 -0.17 1.4 14.5 2 W61 0 10.4 153 2.7 5.5 14.5 2 W62 -6 15.7 153 -0.17 1.4 14.5 2

#1 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (3-25): Beta Alpha Background (cpm) 43 0.36 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 150 14.5

#2 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (3-26): Beta Alpha Background (cpm) 46 0.07 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 153 12.0

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/100cm2) 95% CL

F1 -42 32.9 153 -0.2 1.5 12 F2 0 10.3 153 2.7 5.5 12 F3 12 19.6 153 -0.2 1.5 12 F4 -30 28.4 153 -0.2 1.5 12 F5 0 10.3 153 2.7 5.5 12 F6 48 35.0 153 -0.2 1.5 12 F7 -6 15.7 153 -0.2 1.5 12 F8 6 15.7 153 -0.2 1.5 12 F9 -48 35.0 153 -0.2 1.5 12 F10 -24 25.8 153 -0.2 1.5 12 Fl1 -6 15.7 153 -0.2 1.5 12 F12 -48 35.0 153 -0.2 1.5 12 F13 6 15.7 153 -0.2 1.5 12 F14 -272 80.2 153 -0.2 1.5 12 F15 -48 35.0 153 -0.2 1.5 12 F16 54 36.9 153 2.7 5.5 12 F17 12 19.6 153 -0.2 1.5 12 F18 30 28.4 153 -0.2 1.5 12 F19 -48 35.0 153 -0.2 1.5 12 F20 0 10.3 153 -0.2 1.5 12 F21 18 22.9 153 2.7 5.5 12 F22 -18 22.9 153 2.7 5.5 12 F23 48 35.0 153 2.7 5.5 12 F24 -42 32.9 153 -0.2 1.5 12 F25 -18 22.9 153 2.7 5.5 12 F26 0 10.3 153 -0.2 1.5 12 F27 6 15.7 153 -0.2 1.5 12 F28 -36 30.7 153 -0.2 1.5 12 F29 -272 80.2 153 -0.2 1.5 12 F30 12 19.6 153 -0.2 1.5 12 F31 42 32.9 153 -0.2 1.5 12 F32 -72 42.2 153 -0.2 1.5 12 F33 90 46.9 153 2.7 5.5 12 F34 -54 36.9 153 -0.2 1.5 12 F35 12 19.6 153 -0.2 1.5 12 F36 18 22.9 153 -0.2 1.5 12 F37 -18 22.9 153 -0.2 1.5 12 F38 36 30.7 153 -0.2 1.5 12 F39 -12 19.6 153 -0.2 1.5 12 F40 48 35.0 153 2.7 5.5 12 F41 12 19.6 153 2.7 5.5 12 F42 -36 30.7 153 -0.2 1.5 12 F43 -18 22.9 153 -0.2 1.5 12 F44 6 15.7 153 -0.2 1.5 12 F45 -24 25.8 153 -0.2 1.5 12 F46 42 32.9 153 -0.2 1.5 12

Page 1 of 2 F47 30 28.4 153 -0.2 1.5 12 F48 -272 80.2 153 -0.2 1.5 12 F49 -36 30.7 153 -0.2 1.5 12 F50 -60 38.8 153 2.7 5.5 12 F51 -272 80.2 153 -0.2 1.5 12 F52 24 25.8 153 -0.2 1.5 12 F53 48 35.0 153 -0.2 1.5 12 F54 -272 80.2 153 -0.2 1.5 12 F55 30 28.4 153 2.7 5.5 12 F56 24 25.8 153 2.7 5.5 12 F57 18 22.9 153 -0.2 1.5 12 F58 -272 80.2 153 -0.2 1.5 12 F59 24 25.8 153 -0.2 1.5 12 F60 -272 80.2 153 -0.2 1.5 12 F61 36 30.7 153 -0.2 1.5 12 F62 -272 80.2 153 -0.2 1.5 12 F63 24 25.8 153 -0.2 1.5 12 F64 48 35.0 153 2.7 5.5 12 F65 -272 80.2 153 -0.2 1.5 12 F66 6 15.7 153 -0.2 1.5 12 F67 -272 80.2 153 -0.2 1.5 12 F68 18 22.9 153 -0.2 1.5 12 F69 30 28.4 153 -0.2 1.5 12 F70 54 36.9 153 2.7 5.5 12 F71 24 25.8 153 -0.2 1.5 12 F72 -272 80.2 153 -0.2 1.5 12 F73 -272 80.2 153 -0.2 1.5 12 F74 -272 80.2 153 -0.2 1.5 12 F75 0 10.3 153 -0.2 1.5 12 F76 6 15.7 153 2.7 5.5 12 F77 -272 80.2 153 -0.2 1.5 12 F78 0 10.3 153 -0.2 1.5 12 F79 0 10.3 153 -0.2 1.5 12 F80 0 10.3 153 -0.2 1.5 12 F81 78 43.8 153 -0.2 1.5 12 F82 24 25.8 153 2.7 5.5 12 F83 -84 45.4 153 -0.2 1.5 12 F84 -272 80.2 153 -0.2 1.5 12 F85 -90 46.9 153 -0.2 1.5 12 F86 -272 80.2 153 -0.2 1.5 12 F87 -272 80.2 153 -0.2 1.5 12

#2 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (3-26) Beta Alpha Background (cpm) 45 0.07 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 153 12.0

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Bathroom

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/100cm2) 95% CL

WI -12 19.7 154 2.5 5.3 12.2 3 W2 -12 19.7 154 -0.4 2.1 12.2 3 W3 12 19.7 154 -0.4 2.1 12.2 3 W4 12 19.7 154 2.5 5.3 12.2 3 F1 100 49.4 154 5.4 7.8 12.2 3 C1 38 31.5 154 -0.5 2.4 12.2 3 C2 12 19.7 154 2.5 5.3 12.2 3

#3 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info: Beta Alpha Background (cpm) 46 0.13 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 154 12.2

Page 1 of 1 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/100cm2) 95% CL

C1 -6 15.7 153 -0.17 1.4 12 C2 24 25.8 153 2.7 5.5 12 C3 -78 43.9 153 2.7 5.5 12 C4 -36 30.8 153 2.7 5.5 12 C5 -24 25.8 153 -0.17 1.4 12 C6 18 23.0 153 -0.17 1.4 12 C7 -6 15.7 153 -0.17 1.4 12 C8 18 23.0 153 -0.17 1.4 12 C9 -24 25.8 153 -0.17 1.4 12 C10 18 23.0 153 -0.17 1.4 12 C11 -36 30.8 153 -0.17 1.4 12 C12 -42 33.0 153 2.7 5.5 12 C13 -6 15.7 153 -0.17 1.4 12 C14 -48 35.0 153 -0.17 1.4 12 C15 -18 23.0 153 -0.17 1.4 12 C16 -6 15.7 153 2.7 5.5 12 C17 6 15.7 153 2.7 5.5 12 C18 18 23.0 153 -0.17 1.4 12 C19 30 28.4 153 -0.17 1.4 12 C20 12 19.7 153 2.7 5.5 12 C21 -36 30.8 153 2.7 5.5 12 C22 -24 25.8 153 -0.17 1.4 12 C23 12 19.7 153 2.7 5.5 12 C24 6 15.7 153 -0.17 1.4 12

#2 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (4-1): Beta Alpha Background (cpm) 46 0.07 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 153 12.0

Page 1 of 1 Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Exterior (Walls and Vents)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/100cm2) 95% CL (dpm/100cm2) 95% CL

WI -54 37.0 154 -0.4 2.1 12 W2 48 35.0 154 -0.4 2.1 12 W3 30 28.4 154 -0.4 2.1 12 W4 18 23.0 154 -0.4 2.1 12 W5 54 37.0 154 -0.4 2.1 12 W6 -66 40.6 154 2.5 5.3 12 W7 -60 38.8 154 -0.4 2.1 12 W8 24 25.8 154 2.5 5.3 12 W9 -54 37.0 154 -0.4 2.1 12 WI0 60 38.8 154 -0.4 2.1 12 Wl 1 -18 23.0 154 -0.4 2.1 12 W12 -85 45.7 154 -0.4 2.1 12 W13 18 23.0 154 -0.4 2.1 12 W14 30 28.4 154 2.5 5.3 12 W1 5 18 23.0 154 2.5 5.3 12 W16 -24 25.8 154 -0.4 2.1 12 W17 -42 33.0 154 2.5 5.3 12 W18 0 10.4 154 -0.4 2.1 12 W19 18 23.0 154 -0.4 2.1 12 W20 -18 23.0 154 -0.4 2.1 12 W21 60 38.8 154 -0.4 2.1 12 W22 -60 38.8 154 -0.4 2.1 12 W23 30 28.4 154 -0.4 2.1 12 W24 18 23.0 154 -0.4 2.1 12 W25 -66 40.6 154 -0.4 2.1 12 W26 -54 37.0 154 -0.4 2.1 12 W27 -18 23.0 154 -0.4 2.1 12 W28 30 28.4 154 -0.4 2.1 12 W29 -42 33.0 154 -0.4 2.1 12 W30 -18 23.0 154 -0.4 2.1 12 V1 -12 19.7 154 -0.4 2.1 12

#3 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info: Beta Alpha Background (cpm) 46 0.13 Bkgd ct. time 60 60 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 154 12.2

Page I of 1 Elevated Removable Surface Activity Measurements Molycorp - Building 29 Survey Unit (Affected Area)

No elevated removable surface activity was reported above limits.

Page 1 of 1 Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Floor

Location Exposure Rate Net Exp Rate Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr) (uR/hr) (uR/hr)

F1 8 F45 10 F2 12 F46 10 F3 10 F47 10 F4 10 F48 11 F5 10 F49 10 F6 10 F50 10 F7 12 F51 11 F8 12 F52 10 F9 12 F53 10 F1O 10 F54 10 F11 10 F55 10 F12 10 F56 11 F13 10 F57 10 F14 10 F58 10 F15 10 F59 10 F16 10 F60 11 F17 10 F61 10 F18 10 F62 11 F19 10 F63 11 F20 10 F64 10 F21 11 F65 10 F22 11 F66 10 F23 12 F67 10 F24 11 F68 10 F25 10 F69 10 F26 10 F70 10 F27 10 F71 11 F28 10 F72 11 F29 10 F73 10 F30 10 F74 10 F31 9 F75 11 F32 10 F76 10 F33 10 F77 10 F34 10 F78 12 F35 10 F79 10 F36 10 F80 10 F37 10 F81 12 F38 10 F82 12 F39 9 F83 12 F40 11 F84 14 F41 10 F85 12 F42 10 F86 12 F43 10 F87 10 F44 10

Background dose rate: 10 uRPhr with Model 19, No.115870

Page 1 of I Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Walls (Interior)

Location Exposure Rate Net Exp Rate Location Exposure Rate Net Exp Rate (uRlhr) (uR/hr) (uR/hr) (uR/hr)

WI 8 W32 10 W2 12 W33 10 W3 10 W34 10 W4 10 W35 10 W5 12 W36 10 W6 12 W37 10 W7 10 W38 10 W8 10 W39 5 W9 10 W40 6 WI0 10 W41 7 Will 10 W42 7 W12 10 W43 7 W13 10 W44 7 W14 10 W45 7 W15 10 W46 7 W16 10 W47 7 W17 10 W48 8 W18 10 W49 8 W19 10 W50 8 W20 12 W51 8 W21 10 W52 8 W22 12 W53 8 W23 12 W54 7 W24 14 W55 8 W25 14 W56 8 W26 12 W57 7 W27 10 W58 7 W28 10 W59 10 W29 10 W60 10 W30 10 W61 10 W31 10 W62 10

Background dose rate: 10 uRPhr with Model 19, No.115870

Page 1 of 1 Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Bathroom

Location Exposure Rate Net Exp Rate (uR/hr) (uRlhr)

W1 10 0 W2 10 0 W3 10 0 W4 10 0 F1 10 0 Cl 10 0 C2 10 0

Background dose rate: 10 uR/hr with Model 19, No.115870

Pagb I of I Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Exposure Rate Net Exp Rate Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr) (uR/hr) (uR/hr)

C1 5 -1 C13 7 1 C2 6 0 C14 7 I C3 7 1 C15 7 1 C4 7 1 C16 7 I C5 7 1 C17 6 0 C6 7 1 C18 8 2 C7 7 1 C19 8 2 C8 7 1 C20 7 1 C9 7 1 C21 7 I C10 7 1 C22 7 Cll 7 1 C23 8 2 C12 7 1 C24 8 2

Background dose rate: 5-7 uR/hr with Model 19, No.115870

Page 1 of I Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Exterior (Walls)

Location Exposure Rate Net Exp Rate Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr) (uR/hr) (uR/hr)

WI 8 -4 W17 9 -3 W2 9 -3 W18 10 -2 W3 9 -3 W19 10 -2 W4 15 3 W20 10 -2 W5 15 3 W21 10 -2 W6 16 4 W22 8 -4 W7 17 5 W23 9 -3 W8 15 3 W24 9 -3 W9 11 -1 W25 9 -3 WI0 12 0 W26 10 -2 Will 14 2 W27 8 -4 W12 15 3 W28 9 -3 W13 14 2 W29 9 -3 W14 11 -1 W30 10 -2 W15 10 -2 VI 10 -2 W16 10 -2

Background dose rate: 9-12 uR/hr with Model 19, No.115870

Page 1 of 1 Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Building Exterior (Roof)

Location Exposure Rate Net Exp Rate Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr) (uR/hr) (uR/hr)

9 -3 see map 11 -1 see map 10 -2 see map 9 -3 see map 10 -2 see map 10 -2 see map 9 -3 see map 9 -3 see map 12 0 see map 11 -1 see map 11 -1 see map 9 -3 see map 10 -2 see map 10 -2 see map 9 -3 see map 9 -3 see map 12 0 see map 11 -1 see map 11 -1 see map 9 -3 see map 11 -1 see map 10 -2 see map 10 -2 see map 9 -3 see map 12 0 see map 11 -1 see map 12 0 see map 10 -2 see map 12 0 see map 10 -2 see map 11 -1 see map 9 -3 see map

Background dose rate: 9-12 uR/hr with Model 19, No.115870

Page 1 of 1 Summary of Building Surface Direct Reading (Total Activity) Results Molycorp - Building 29 Survey Unit (Affected Area)

Including all building interior and exterior measurements

Beta Alpha n x S P n x s Pa 214 -1 251.0 27.8 214 -1 501.9 55.7

ti_• 1.654

Guidelines/Conditions Satisfied? Beta Alpha Yes Yes Summary of Exposure Rate Measurements Molycorp - Building 29 Survey Unit (Affected Area)

Including all building interior and exterior measurements (uR/hr)

n x S P.La 243 -0.3 1.7 -0.1

tl_= 1.653

Guidelines/Conditions Satisfied? Yes i1&ý-, ,, Q ýIi-. Ili,-

DDO-138 Radiation Protection Survey Report -FSite: Moycorp / Washington. PA Section 1: Survey Info-mton 10C) C'70 5CU.-Vff reporj-FI Oate+ 7-Zo-"0 •-2, Time: L n: Survey Issue Log Number

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Interior Scale: 4m x4m Pot Radiological Survey Results - Survey Location Indicator

Survey Area Informatin:)31

Instrument Cal Probe Cal a Scan a 13 Due Model/SN Due MDA Static Static Model/SN MDA MDA MDA,. Instrument Data

Print Name Signature Date Performed MA-,K P L-A - A'< " __,-__ _ By:

Location Scan a Scan 13 Static 13 Smears 2 (cpm) (cpm) (unsh) (sh) (cpm) (grem/hr) (dpm/1 00 cm ) (cpm) (cpm) __

__-__ _ oo 3,;z3•8 3to /- 1Ž2- 0/ ____ 4'f

3 ____/0 30 -Ž5) ___19 •-H a(S / 1-66 d13 Y /0 - / 8 7 d.>_•_ ___ -/ 4J- ,_-aSO ,5371__ d •j o0 ___- ^ / 0 woŽ L 3o0 /.2- /1 . e; '-t/V_ __, _ _/ _ _ _ kk lS•(00d-,L29 3 /0~ LO - 2% 0 L 2-Z"..;? t 3- a 0 / _ -0 LA.-_1 _ 300 - - ,_- p9 LO- Io1I,-o 0, 3/00I10 _Y0/ w )-13 3.--o03___ I-/ 1I1 -3/

w -i Vý 0~4 I.) '-COi 30/ /0 k)-A , 3 t. o / 16, 1- ,9 LA)--1 3 G 0<,0 2a-( (, / .- -5-5 k,.- I 33o 15" 981 23/ ± J-LA)13 J9 b 0 / 13,3 9 /0 -( w2L1 d30 / 4,•,_Yk /0 - I 1 300 Cý4 3 /0 q/8 /z_12J- -- 60 •-a 0" 3,10 // "___ I ___-__ 3;o /i 078 ?23V 2Lio ij- I.•-/ ___-__ 300 IL ,.3o a23 /

-'L4-,;LI 300 / 385 300 3 /6/9,-. i--•_S'- o / ±LL 3ý JL / -l 3(

_ -__,, •330 1, //-Yoo 719- (. / -- 7 __ _ - -54/ __ -_-_ ___o i Qa'Y 9y7 p9 /

Page 3 of /I a

Radiological Survey Results - Survey Location Indicator 6Z -tW9• Survey Area Informlation, 9 Z f4/~-~

Instrument Cal Probe Cal cc Scan Satc Sai ModelISN Due Model/SN Due Scan MVDA SDati Mtati

Instrument______Data

Print Name Signature Date Performed AA" W Vl-o.-AA&,la(. _ ___ By:

StaticSmears Location pScan a Scan PushStaticSaic E (p/10 C (p (p (p (sh) (cpm) (pirem/hr) ccm100c 2 (cpm)(cpm)(cpm)(cpm)

w~2~ 2d0q 0 2O-0~ 510; -0j0 c7O2-2 3 (. -5 j - t /C0 / W__ _30__ 2(±,; 0c W~-301A 3j (f 0& 7-72, Df /0 -ý A

8 If /0__ _ w -3,?, 3,?Lo 22 2-? 0~

_ _ _ )O_ fiZ57S• ~ '; 3 L//0 2- /-Z- /7•, 3 /0 __/8_ tu-)3 5 2-:9 (.4 ';LS 3 (00 ___0

L7034i 0-~ 2/ 3o 'As // 4

___ 37iL__ C?7 //, /8I/8V

7-7? __ _ _ .2(,,o /872. 160b .290-'~~e.p V" .2 J /so_ 4,7, -36 Z,- . _ ;1__(0 0 12 )6 7

'ý/j- 7- -,/ 7 111 __ -f __ ?-& 0 i ?IW /- L~j-7' )o / 2JY-_I _ 7 - /7 I 1I 3oo I'' 1,? 3?/; d__ 7 -/

_ _ _- 7~o~ _ _ tv-97 31'o ___ 4 - - 3a0 J~ Z397 1 3- ,7 zL

7 _____ W-YI1_ -9-_0-~ 89L UY-_L- ako 3 R' /9 m// I?__ ~~3 __ 2286_ ý733 W'ra ~70 1/ '; /14 .~ -,/7 z• 3 -80 2~- ~ 57 -- S- 8/-t7 -

Page -Y-of /it Radiological Survey Results - Survey Location Indicator Survey Area Information: 5--

Cal Probe Cal Scaa 1ScanScan Static Static13 Instrument MDa SDati Model/SN Due Model/SN Due MDAMDa MDA MDA MDA , Instrument Data

Print Name Signature Date Performed S .uL--- kA.l By:

Location 13 Scan a Scan (3 Sti Static a Static ER Smears 2 (cpm) (cpm) (unsh) (sh) (cpm) (ltrem/hr) (dpm/100 cm ) (cpm) (cpm) __1

ŽLj-,$~-, 20 L •;/& •-/1 / "7 -,/7 - ,___ p U-5 2-902--,o.• Y / Imq J•/, '•2-/ -4& 4 7 2 50 S /-5 1 2 -,/7 7- w -S, " . O / i' /71/ 7

W-.0 7-v 0 1<(1 / 1 97 2 /0 -,/7 L- a( -20 1 >-d-0 /' a C' LA -~ 10 0o ~ i /0-A

Page 'of Building 29 North

1•kIJ

C--, r-- 7-

.. C 1 0 C-Il-

6-Is C(-lq 0 -15" 6-((

C-III •-C,

c-;;u ct

Ceiling Scale: 4m x 4m 4

Radiological Survey Results - Survey Location Indicator Survey Area Information: I •q T,J-t- e ,,

3Scan Instrument Cal Probe Cal Static Due Model/SN Due Scan MD Static Model/SN MDA MDA MDA,. Instrument Data

Print Name , Signature Date Performed RAk- 13LA•,JCAA1 N,&--Q...tu4LK ___ By:

S StaticS Smears Location 3Scan Scan (unsh) Static ac Static ER (dpm/100 cm2) (cpm) (cpm) (uns) (sh) (cpm) (jirem/hr) 0 (cpm) (cpm) _ _ a c.-I 3,o gs-/ S 5.- .-//7 ,c - ( 0 2q(, ,9t 3 (a 2,1 •C- 3-'0 -)D/ 3P-_7 -P1 -7

-I __ .>-_ 3 7 -,/7

C-/ 70 -,;Xs a z1o.•oG-,/? /• -/0 __ 07 ___ /

r( 0 0-11 13 - S- 3 - -_- _ c-/,2 2-0 o 29 . o 3 7 I7 "-/ -• -zL,•6 e-> -o ~ ,-73,7 ?7-•.9 4-9 12 - e-l_ . 'o0 10 -Lf 3 -,/7 -/9 C-4 , 0 1 3,3 ,4> ( 7 .-. 7

C- Ik :ý.7 0 .. ,3 p y (0 1 F -. /7 c-(• '70 ,.5- ,3 Y ;L -,/7 3,0 C0-d-O Y ad- 7 2-, I 227 1 2-- 1 G 0 > c-?7c- 60 0 >*t i av7 7 ~77/ -12

X0_ 25-/ ___x 3:0- ~ 7 -

Page ? of /4 Building 29 North a •--oo 95"

Interior oJLL¶ 4

Radiological Survey Results - Survey Location Indicator

Survey Area Information: )Ldf '729_ - ,-oioz (FA=e) '""

Instrument Cal Probe Cal a Scan 3 Static Model/SN Due Model/SN Due Scan MDA Static MDA MDA MDA. Instrument Data

Print Name Signature Date Performed "A'•K A1- _ kA_,,,'.••S By: __- ____- ___-___-_ _._

f3Static 13Smears -Location f3 Scan a (unsh) Static a Static ERm (cpm) (cpm) (sh) (cpm) (fgrem/hr) (dpm/100 cm2 ) (cpm) (cpm) ______f"-50 ••'A{ •q-~o1o q .2 9 , •-L- ISOO IQI 3-7o Qq.Ž A-l 12- , o21 ,c-5 15" LL 37aC & /0 /- _ 1 )2

)(f00 Ilaoo4- 350 oleo _5r, -36 (-( 0o - 3773 99 33, o 7 0 /-"-4 J •o Z 3ao •A / ,o -,- j y -Z7 18oO 1/ 378 •aaI . -8 'r%1 1[7o0 1 1A 377T ac2i 12- ___ C-4 I d±-/ 3-5'0, ar~ -6 /2 )4:_-iO !__50 /0 370o )?q 3 /-2 F-I/ 1,OO I 333 •o 4 // -. LIr z- 50s0 ly 3.35 -. 2- 41'8 _-13 Iwo0 CQ 333 1 .R- /0 -. 2- 4 fj-j/! C)il •2 3, 9x 3- -q -d2a __-___, IQ JkoI •2.____ • (- ___-._-- 1 -416 1L.(000 /J_ 3 3d ___ /0 17o6 0 fL.. 3Y'8 o7( __- /0 2,7 S__ ,

f-! 174oo IL/ 24 •,1&Q L l /o 2-,- 0,

_ -____ 1700 Vi 3 P L /0 I-! tef - 2- /7,0 0 335 ý) 3;ý ;!1,7 3S•P7 a (3/ - J117. _-___ •-•[ 17__/700 Id, 37 6 1qa43 I .2. --/ z• q ; a 4• B auo l o ,7 -7 i00-012 d 16 acl_ý 14&]ý .. /0 7-, f /g221o(, I1, 3,5-1- Jf-33 10 -,_.2- 1

Page q of J 4

Radiological Survey Results - Survey Location Indicator Survey Area Information: %_A-,3

a 13 Instrument Cal Probe Cal Saa 3ScanScan Static Static Due Model/SN Due MDA Model/SN MDA MDA MDA,. Instrument Data

Print Name Signature Date Performed AtA.k T0L,1•J ci A K By: ______

Static 13 Smears Scan a Scan Sttsh) Static a Static ER (dpm/100 cm2) Location (cpm) (cpm) (ush) (sh) (cpm) (grem/hr) m (cpm)_ (cpm) (cpm) (cpm) _ /900_ 11 aL&QQ -1± /0 -. /a- ____0 /.2 -69 Jj' 3o3 3 / -,3 A- 36 € s o i7 .2-, J;-)..'t-._/2

p - ?q 57o00 L0.2 C, a.id I, 30 ,,,2 p- _? 0 J.. 0 "5 33!5• _L1 -, 12 q 0 iýIo 5,-/6a 0,_. 1 /11 /0 A",2-. .F-F -3(. 33/3 /2 ? 0 •.320 00 a-F 3 JL/ -. -, .1 r- 10221Q,. 1- () 2 A)/q1. ~ _ 300a! _ 3// J2/ /

3 q F 3 cj /.00& . /6, __14_Y_ r-'YO0 j M a3l /-1 //'-2/1 _e__ F -- 14 / 2 9 0 12 3,g a9 3 ZZ,/ 2I 112 F-•P I6g 1s/0 / b.0,/ /0 .- ,2, -36 .L- 14i96 Z 3261 a., _ /0 -. 1 -/ 2R

JLý5 369f .I~2 -. 24 3523 ý4 60//? f -2Q J•L 3:> zID3 I-4,2 ~2 Fr - qq.•? 1400 1J( ;-2 g- t014-C /0' -, 2

______AZoeo3 /00 /..1 Aq 6C13-/6) F, I&~•Q~p 30 a__aq?O /q/2 ~2 2L FzŽ I_ / 01 9K .4 /0L L.ý41 1 F-9-3 J-1~-/9 62 jL lk /0 LL ~

Page LO of / 4

Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal Saa 13ScanScan Statica Static MDa SDati Model/SN Due Model/SN Due MDAMDa MDA MDA MDA ,, Instrument Data

Print Name Signature Date Performed By:

13 Static 13 Smears Scan a Scan Sttsh) Static a Static ER (dpm/100 cm2) Location (cpm) (cpm) (nsh) (sh) (cpm) (ýtrem/hr) d (cpm)() (cpm) _ _

6V DJC ZJj 333- 36q ID "-,

C--_0 1 L0c , -33J- -, a_,,

F-5 / SC.. /0 4.13 3c[ a- S/-, 3 (Ab /qc'o /2I\ -_ý 10-, /0 I. ,T

Xi::- I 6, CO l lo -- &Lýý /(,, 6! CO lac 41I2~

Fj•- - / q o o /-/0 •• F-14 /70C6 5 3 a0' I.I /0 -7- F--:0 !?o i, •& •• 4// z . a

•-'I4 L/. ,Q-Q 2Is A355 ,____.G -- , o.•7 £b~hLL a2L t~m/ 0 -d) X -/60 /s /.0

I- 2 06 0 _____c_3/_ ? 10 -,o,- 0

3- 16_/ 4\0 1 _o1152- 341 ,,,1 • .. //0- Z.- -1 778

Page_/jofŽ:/: Is

Radiological Survey Results - Survey Location Indicator e-7 - Survey Area Information:D 1 1

a Instrument Cal Probe Cal SaU 3ScanScan Static Static Mta SDati Model/SN Due Model/SN Due MDAMDa MDA MDA MDA .. Instrument Data

Print Name Signature Date Performed By:

Stti Smears Location P Scan a Scan Stc Static a(cpm) Static (ýtrem/hr)ERSme (dpm/100 cm2) (cpm) (cpm) (unsh)(cpm) (cpm)(sh) a P

F- JýQal /4 _____Q e4 & /- ?. 39V _-2 1-__3 AO 0l0_ _, 20 T 9- L 3 F-9V4 3,;0o0 Is '15 •tt .- - 7 2

F__ 133q1,W __-___._._-__ _ -. > 0 • -2L•, _oo __'/ ______1 _-_____l /SoO,q / •4°1 o9' JJoL, .- ~ _.2-7 X

Page I 2-.of ./ Indicator Radiological Survey Results - Survey Location

Date

Smears (dpm/100 cm2) a I p

Page_ .of/_ Building 29 -5a,/,-- v e y -/-/ North e z- -e,ý 7 S-

Bathroom Ceiling Bathroom Interior

Bathroom Exterior

Ceiling Scale: 4m x 4m 0

Radiological Survey Results - Survey Location Indicator

Survey Area Information: /1 Instrument Cal Probe Cal a 3 Scan a t MDa MDA Sta MDati Model/SN Due Model/SN Due MDA MVDA MDA .. Instrument Data

Date V-Z Print Name -ignatur .. . Performed 24]bJ6/,4,_' ! By:

StaticSa1Static ER Smears cm2) Location Scan a Scan (unsh) Static Staticm ER (dpm/100 f (cpm) (cpm) (cpm) (cpm) ______a

-1 /, W- -300 ,;L 181 . P,!2a L_;.2;.-VJo-3 17oý•J 7 01?7o271,3 1_too,)'10 / 2 0 / ,0 J/ -,2 F~~ 3;s • -( 1)-8'7 ";k- . s" /o0

300 7 a7c_ a' t o, 38 -___ 223 210 Al /0

Page d of /4 Building 29 North

- t . ______0'j.--21 w 7-3

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WckA44. ZL Exterior Scale: 4mx4m inciavoar rctmuI= -. 3urvey L.ocation rM3U10U9GMU OureVy

-. urvey Area Ifbf~flTta~fl an pcnstatic static Instrument Ca PrbcCl DA MDA MDA.. Modal/SN Du Model/SN Due MD Instrument Data

.Date Print Name Signature Performed MOA OL< t By. --- ERSmears pStatic cm 2) Static a Static (dpm/1l00 Location fSca (cp)a cpm ca (unsh)(m) (sh) (cpm) (prem/hr)

~r -- -. jL.'A-pm Alpm

iK- - 2

...... *eo

-A- Page J13 of I' T 00D-138 Radiation Protection Survey.Report Site: Molycorp / Washington, PA Soction 1: Survey Infonation I Date rime: I Location: Survey Issue Log Number

RWP Number P~urpose of Survey:Pr .. o C::3RWP 0 Routine Survey 3 Unconditional Release A Other. ! Smear Beta Alpha Survey Title: po, %> Number dpm/100cm't dpmlOcm-f

dmMOcr *Po$ &V 4 Ifzl44i Nmbr dm/00c

+I~ ~ ~o44..c f-1 3~6 3

r/ ^1 A I 7, 10,

Pit-W Z4______

% .. • 12I121

IIFrI~ DII (? 331(1- 13;

16,4`3 + -335 I 161 17 3,.5, Ve 19 j201

lii Ii !9 ,22 2" 24 I 25

Bkqo Readinos: C , ~7 26 Legend: gamma 00 C mRemrh gamma contact 0-) Smear Location - = Air Sample Location -X-X-X- Rope. 00 = mRemih Boundar,/ or Barrier 00 -I = mRemrh beta 00 !1C = mRemih beta contact -_D-- = Large Area Wipe = Bulk Materdai Sample I Section 2: Instuument Used Instrument Model/SN: Cal Due Probe Model/SN: Cal Due Detector Eff.: MDA: Other Date: J Date: °cpm/°dpm) q/3 V-- 1 ia ,1 6 6

14

Section 3: Review and Approval Survey Performed By (Sign): Area Posted and/or Barricaded: Date and Time: LI1Yes ONo P ot Required Radiation Saet Ofir(rn ae ?Signy: Date and Trime:. Radiological Survey Results - Calculational Sheet oZ52- lOCT

Page Z of .6 inuicavor F maulowgIGM ourvey me5ulm . ourvey L..ocavon o,;t- 'o to

page 3 of -f- Locamon incicavor magiologIGM ourvey mesul= -Qurvey

Page -ý. Of iz

13 flel 1-\ r*l 14ý CZ LL U,

zr Appendix G

Building 32 Data Package Molycorp Washington, PA Building 32 Data Package

This data package contains final status survey information for Building 32, Molycorp, Washington, PA site.

Field data collection forms, survey report forms, statistical test results, and comparisons to release limits are provided.

Summary

During the final status survey of Building 32, elevated radioactivity was identified in multiple localized areas on the concrete floor and on several structural support components of the building (purlins). The building's classification was changed from unaffected to affected, and an affected final status survey was performed.

It was determined that the activity identified on the floor was fixed into the concrete, and required surface removal of the concrete in the identified areas. The activity identified on the purlins was also determined to be fixed contamination. The structural integrity of the building was evaluated without the affected purlins (removed due to fixed contamination). It was concluded that the purlins needed to remain in place until building demolition.

The areas on the purlins, identified as contaminated, have been marked with a bright florescent paint and recorded as being contaminated in a log controlled by the project manager. These contaminated purlins will remain in place until just prior to building demolition.

Remediation of the concrete was performed. All post-remedial surveys indicated that remediation activities were successful, and that all the affected concrete was removed.

Elevated levels of background radiation, from soil radioactivity, continued to be a presence during survey activities of Building 32.

Results from the final status survey of Building 32 provides evidence that release criteria have been met, demonstrates that residual radioactivity is below the unrestricted use criteria, and confirms that Building 32 is suitable for unrestricted use, excluding the contaminated purlins that will be removed just prior to building demolition. Results of Surface Scans Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

F1 1600 -540 2 -16 F2 1800 -340 5 -13 F3 1800 -340 5 -13 F4 300 -1840 6 -12 F5 5500 3360 10 -8 F6 1600 -540 7 -11 F7 1600 -540 11 -7 F8 1800 -340 6 -12 F9 1500 -640 6 -12 F10 5000 2860 5 -13 Fl1 1500 -640 5 -13 F12 1700 -440 10 -8 F13 1600 -540 7 -11 F14 1700 -440 6 -12 F15 1800 -340 9 -9 F16 1700 -440 5 -13 F17 1600 -540 6 -12 F18 1700 -440 6 -12 F19 1800 -340 6 -12 F20 1800 -340 7 -11 F21 1700 -440 6 -12 F22 1800 -340 5 -13 F23 1600 -540 7 -11 F24 1700 -440 8 -10 F25 1600 -540 7 -11 F26 1700 -440 8 -10 F27 1600 -540 6 -12 F28 1500 -640 5 -13 F29 1800 -340 6 -12 F30 1700 -440 7 -11 F31 1800 -340 6 -12 F32 2000 -140 6 -12 F33 2200 60 5 -13 F34 2200 60 7 -11 F35 1800 -340 6 -12 F36 1800 -340 8 -10 F37 2000 -140 8 -10 F38 2800 660 5 -13 F39 2000 -140 7 -11 F40 1800 -340 10 -8 F41 3400 1260 10 -8 F42 1900 -240 5 -13 F43 2900 760 6 -12 F44 1600 -540 6 -12 F45 1500 -640 5 -13 F46 1700 -440 7 -11 F47 1800 -340 6 -12

Page 1 of 2 F48 2500 360 8 -10 F49 1700 -440 7 -11 F50 1700 -440 7 -11 F51 7000 4860 6 -12 F52 1800 -340 8 -10 F53 3200 1060 6 -12 F54 1700 -440 7 -11 F55 1600 -540 6 -12 F56 2700 560 7 -11 F57 1800 -340 5 -13 F58 2700 560 7 -11 F59 1900 -240 9 -9 F60 1400 -740 5 -13 F61 1700 -440 5 -13 F62 1800 -340 12 -6 F63 1800 -340 6 -12 F64 1900 -240 14 -4 F65 2100 -40 10 -8 F66 1700 -440 9 -9 F67 1600 -540 6 -12 F68 1600 -540 5 -13 F69 1800 -340 12 -6 F70 2400 260 11 -7 F71 2900 760 10 -8 F72 1600 -540 6 -12 F73 8500 6360 9 -9 F74 2400 260 6 -12 F75 1700 -440 7 -11 F76 1700 -440 5 -13 F77 1900 -240 4 -14 F78 6500 4360 19 1 F79 1600 -540 9 -9 F80 1800 -340 6 -12 F81 1600 -540 6 -12 F82 1700 -440 7 -11 F83 5500 3360 11 -7 F84 1700 -440 5 -13 F85 1900 -240 12 -6 F86 1700 -440 7 -11 F87 1700 -440 5 -13 F88 1700 -440 9 -9 F89 1900 -240 10 -8 F90 5800 3660 10 -8

All floor scans performed with Ludlum 239-1F (2350-1 No.95359) with 43-37 No. 92503

Floor Monitor Info: Scan MDA Beta - 227 dpm/detector area Scan MDA Alpha - 27 dpm/detector area Scan background Beta - 2140 cpm Scan background Alpha - 18 cpm Detector Eff. Beta - .27 Detector Eff. Alpha - .207

Page 2 of 2 Results of Surface Scans Molycorp - Building 32 Survey Unit (Affected Area)

Building Walls (Interior)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

WI 280 -49 2 1.8 W2 300 -29 2 1.8 W3 270 -59 1 0.8 W4 305 -24 2 1.8 W5 305 -24 1 0.8 W6 320 -9 1 0.8 W7 305 -24 1 0.8 W8 310 -19 1 0.8 W9 300 -29 2 1.8 W10 260 -69 2 1.8 WII 290 -39 2 1.8 W12 300 -29 1 0.8 W13 330 1 1 0.8 W14 280 -49 1 0.8 W15 290 -39 1 0.8 W16 290 -39 1 0.8 W17 280 -49 2 1.8 W18 300 -29 2 1.8 W19 290 -39 2 1.8 W20 310 -19 1 0.8 W21 340 11 1 0.8 W22 340 11 2 1.8 W23 320 -9 6 5.8 W24 300 -29 2 1.8 W25 280 -49 2 1.8 W26 315 -14 2 1.8 W27 300 -29 2 1.8 W28 280 -49 6 5.8 W29 290 -39 5 4.8 W30 290 -39 1 0.8 W31 270 -59 2 1.8 W32 280 -49 2 1.8 W33 350 21 1 0.8 W34 330 1 3 2.8 W35 260 -69 2 1.8 W36 350 21 2 1.8 W37 290 -39 1 0.8 W38 290 -39 2 1.8 W39 290 -39 1 0.8 W40 280 -49 1 0.8 W41 290 -39 1 0.8 W42 300 -29 2 1.8 W43 280 -49 1 0.8 W44 270 -59 2 1.8 W45 270 -59 1 0.8 W46 200 -129 3 2.8 W47 275 -54 1 0.8

Page 1 of 2 W48 260 -69 1 0.8 W49 275 -54 1 0.8 W50 280 -49 1 0.8 W51 310 -19 1 0.8 W52 270 -59 1 0.8 W53 290 -39 1 0.8 W54 300 -29 1 0.8 W55 310 -19 0 -0.2 W56 340 11 1 0.8 W57 350 21 0 -0.2 W58 4000 3671 57 56.8 W59 380 51 2 1.8 W60 420 91 2 1.8 W61 290 -39 0 -0.2 W62 400 71 1 0.8 W63 360 31 1 0.8 W64 370 41 1 0.8 W65 330 1 1 0.8 W66 370 41 1 0.8 W67 380 51 1 0.8 W68 390 61 1 0.8 W69 350 21 1 0.8 W70 340 11 6 5.8 W71 380 51 1 0.8 W72 290 -39 1 0.8 W73 300 -29 1 0.8 W74 310 -19 1 0.8 W75 280 -49 1 0.8 W76 340 11 2 1.8 W77 280 -49 1 0.8 W78 300 -29 2 1.8 W79 280 -49 1 0.8 W80 280 -49 2 1.8 W81 290 -39 1 0.8 W82 280 -49 1 0.8 W83 290 -39 1 0.8 W84 280 -49 2 1.8 W85 280 -49 1 0.8 W86 260 -69 1 0.8

All interior wall scans performed with Ludlum 2350-1 No.117566 with 43-106 No. 128912

43-106 Info: Scan MDA Beta - 683 dpm/detector area Scan MDA Alpha - 20 dpm/detector area Scan background Beta - 329 cpm Scan background Alpha - .2 cpm Detector Eff. Beta - .251 Detector Eff. Alpha - .212

Page 2 of 2 Results of Surface Scans Molycorp - Building 32 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

C1 300 -10 0 -2 C2 320 10 2 0 C3 280 -30 1 -1 C4 320 10 0 -2 C5 350 40 -1 C6 340 30 0 -1 2 C7 300 -10 1 -1 C8 300 -10 2 0 C9 320 10 1 -1 C10 300 -10 1 -1 Cll 300 -10 2 0 C12 300 -10 0 -2 C13 360 50 1 -1 C14 240 -70 0 -2 C15 280 -30 2 0 C16 320 10 0 -2

Ceiling scans performed with Ludlum 2350-1 No.117566 with 43- 106 No. 128912

43-106 Info: Scan MDA Beta - 686 dpm/detector area Scan MDA Alpha - 63 dpm/detector area Scan background Beta - 310 cpm Scan background Alpha - 2 cpm Detector Eff. Beta - .251 Detector Eff. Alpha - .212

Page 1 of I Results of Surface Scans Molycorp - Building 32 Survey Unit (Affected Area)

Building Exterior (Walls and Roof)

Location Beta Scan Beta Scan Alpha Scan Alpha Scan (see map) gross cpm net cpm gross cpm net cpm

WI 285 5 W2 280 0 W3 310 30 W4 295 15 W5 305 25 W6 300 20 W7 300 20 W8 275 -5 W9 325 45 WI0 300 20 Wil 315 35 W12 340 60 W13 310 30 W14 295 15 W15 280 0 W16 315 35 W17 305 25 W18 310 30 W19 320 40 W20 295 15 W21 300 20 W22 325 45 W23 290 10 W24 315 35 R1 332 52 R2 372 92

All exterior scans performed with Ludlum 2350-1 No.117566 with 43-106 No. 128912

43-106 Info: Scan MDA Beta - 630 dpm/detector area Scan MDA Alpha - 45 dpm/detector area Scan background Beta - 280 cpm Scan background Alpha - I cpm Detector Eff. Beta - .251 Detector Eff. Alpha - .212

Page 1 of I Elevated Scan Readings Molycorp - Building 32 Survey Unit (Affected Area)

Location Beta Scan Alpha Scan (net cpm) (net cpm)

F51 4860 NA F73 6360 NA F78 4360 NA W58 (I) 3671 56.8

Page 1 of I Direct Measurements (Total Activity) Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor (Interior)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/100cm2) 95% CL (dpm/100cm2) (dpm/100cm2)

F1 300 286 14 78 -64 -566 166 387 -1133 F2 341 275 66 78 -12 -106 208 387 -212 F3 320 302 18 78 -60 -531 170 387 -1062 F4 444 396 48 78 -30 -265 195 387 -531 F5 1332 336 996 78 918 8124 568 387 16248 F6 353 321 32 78 -46 -407 182 387 -814 F7 325 299 26 78 -52 -460 177 387 -920 F8 359 282 77 78 -1 -9 216 387 -18 F9 320 302 18 78 -60 -531 170 387 -1062 F10 1775 318 1457 78 1379 12204 680 387 24407 Fl1 452 264 188 78 110 973 283 387 1947 F12 409 319 90 78 12 106 225 387 212 F13 471 384 87 78 9 80 223 387 159 F14 411 297 114 78 36 319 240 387 637 F15 385 277 108 78 30 265 237 387 531 F16 343 285 58 78 -20 -177 202 387 -354 F17 337 314 23 78 -55 -487 174 387 -973 F18 445 359 86 78 8 71 222 387 142 F19 374 284 90 78 12 106 225 387 212 F20 408 234 174 78 96 850 275 387 1699 F21 351 302 49 78 -29 -257 195 387 -513 F22 299 277 22 78 -56 -496 173 387 -991 F23 342 278 64 78 -14 -124 207 387 -248 F24 406 311 95 78 17 150 228 387 301 F25 352 290 62 78 -16 -142 205 387 -283 F26 365 293 72 78 -6 -53 212 387 -106 F27 336 294 42 78 -36 -319 190 387 -637 F28 355 288 67 78 -11 -97 209 387 -195 F29 373 338 35 78 -43 -381 184 387 -761 F30 457 325 132 78 54 478 251 387 956 F31 265 299 -34 78 -112 -991 115 387 -1982 F32 373 327 46 78 -32 -283 193 387 -566 Page 1 of 3 F33 395 356 39 78 -39 -345 188 387 -690 F34 461 373 88 78 10 88 223 387 177 F35 400 354 46 78 -32 -283 193 387 -566 F36 289 249 40 78 -38 -336 188 387 -673 F37 319 273 46 78 -32 -283 193 387 -566 F38 562 477 85 78 7 62 221 387 124 F39 414 332 82 78 4 35 219 387 71 F40 388 310 78 78 0 0 217 387 0 F41 710 291 419 78 341 3018 387 387 6035 F42 352 257 95 78 17 150 228 387 301 F43 705 605 100 78 22 195 231 387 389 F44 388 311 77 78 -1 -9 216 387 -18 F45 413 316 97 78 19 168 229 387 336 F46 387 319 68 78 -10 -88 210 387 -177 F47 409 303 106 78 28 248 235 387 496 F48 553 470 83 78 5 44 220 387 88 F49 406 350 56 78 -22 -195 201 387 -389 F50 451 349 102 78 24 212 233 387 425 F51 1216 325 891 78 813 7195 540 387 14389 F52 372 252 120 78 42 372 244 387 743 F53 668 566 102 78 24 212 233 387 425 F54 405 333 72 78 -6 -53 212 387 -106 F55 433 312 121 78 43 381 245 387 761 F56 565 311 254 78 176 1558 316 387 3115 F57 399 262 137 78 59 522 254 387 1044 F58 567 418 149 78 71 628 261 387 1257 F59 398 332 66 78 -12 -106 208 387 -212 F60 389 316 73 78 -5 -44 213 387 -88 F61 435 275 160 78 82 726 268 387 1451 F62 387 295 92 78 14 124 226 387 248 F63 460 370 90 78 12 106 225 387 212 F64 446 320 126 78 48 425 248 387 850 F65 470 295 175 78 97 858 276 387 1717 F66 533 328 205 78 127 1124 292 387 2248 F67 458 382 76 78 -2 -18 215 387 -35 F68 496 288 208 78 130 1150 293 387 2301 F69 396 327 69 78 -9 -80 210 387 -159 F70 458 274 184 78 106 938 281 387 1876 F71 631 307 324 78 246 2177 348 387 4354 F72 561 310 251 78 173 1531 315 387 3062 Page 2 of 3 F73 2303 1934 369 78 291 2575 367 387 5150 F74 478 293 185 78 107 947 281 387 1894 F75 479 340 139 78 61 540 256 387 1080 F76 809 249 560 78 482 4265 438 387 8531 F77 866 288 578 78 500 4425 444 387 8850 F78 1444 1371 73 78 -5 -44 213 387 -88 F79 462 326 136 78 58 513 254 387 1027 F80 427 295 132 78 54 478 251 387 956 F81 587 266 321 78 243 2150 346 387 4301 F82 460 304 156 78 78 690 265 387 1381 F83 1299 1206 93 78 15 133 227 387 265 F84 529 309 220 78 142 1257 299 387 2513 F85 485 319 166 78 88 779 271 387 1558 F86 771 299 472 78 394 3487 407 387 6973 F87 647 281 366 78 288 2549 365 387 5097 F88 551 294 257 78 179 1584 317 387 3168 F89 487 355 132 78 54 478 251 387 956 F90 1392 380 1012 78 934 8265 573 387 16531

All building interior floor direct measurements were performed with 2360 No. 164680 and 43-89 No. 118544 Beta Alpha Floor Efficiency 0.113 0.164 Floor Background (cpm) 78 2.4 Floor MDA (dpm/1 00 cm2) 387 60

Page 3 of 3 Direct Measurements (Total Activity) Molycorp - Building 32 Survey Unit (Affected Area)

Building Walls (Interior)

Location Unshield Beta Shield Beta Gr( ss Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) Instrument cpm cpm cpm cpm cpm (dpm/100cm2) 95% CL (dpm/100cm2) (dpm/100cm2) Number 17 173 115 162 347 I WI 200 175 25 1 5 -3 -31 72 162 -61 W2 191 186 1 -2 -10 -102 49 162 -204 W3 204 206 1 -5 -13 -133 35 162 -265 W4 253 258 1 W5 252 272 -20 -28 -286 69 162 -571 W6 287 270 17 9 92 100 162 184 W7 257 220 37 29 296 134 162 592 W8 280 276 4 -4 -41 69 162 -82 W9 266 265 1 -7 -71 60 162 -143 WI0 245 253 -8 -16 -163 0 162 -327 Wil 219 249 -30 -38 -388 94 162 -776 W12 286 281 5 -3 -31 72 162 -61 W13 272 242 30 22 224 123 162 449 W14 264 244 20 12 122 106 162 245 W15 271 234 37 29 296 134 162 592 W16 291 283 8 0 0 80 162 0 W17 262 282 -20 -28 -286 69 162 -571 W18 242 203 39 31 316 137 162 633 W19 252 248 4 -4 -41 69 162 -82 W20 253 219 34 26 265 130 162 531 W21 253 264 -11 -19 -194 35 162 -388 W22 288 280 8 0 0 80 162 0 W23 248 250 -2 -10 -102 49 162 -204 W24 269 274 -5 -13 -133 35 162 -265 W25 292 262 30 22 224 123 162 449 W26 266 214 52 44 449 155 162 898 W27 303 250 53 45 459 156 162 918 -9 W28 187 188 -1 -92 53 162 -184 W29 283 264 19 11 112 104 162 224 W30 228 217 11 3 31 87 162 61 W31 222 220 2 -6 -61 63 162 -122 W32 225 220 5 -3 -31 72 162 -61 W33 229 210 19 11 112 104 162 224 W34 233 210 23 15 153 111 162 306

Page 1 of 3 W35 234 222 12 8 4 41 89 162 82 W36 199 210 -11 8 -19 -194 35 162 -388 W37 235 234 1 8 -7 -71 60 162 -143 W38 273 286 -13 8 -21 -214 45 162 -429 W39 227 230 -3 8 -11 -112 45 162 -224 W40 236 200 36 8 28 286 133 162 571 W41 251 232 19 8 11 112 104 162 224 W42 282 286 -4 8 -12 -122 40 162 -245 W43 235 226 9 8 1 10 82 162 20 W44 277 238 39 8 31 316 137 162 633 W45 278 244 34 8 26 265 130 162 531 W46 284 240 44 8 36 367 144 162 735 W47 240 221 19 8 11 125 116 172 250 W48 231 210 21 8 13 148 120 172 295 W49 240 282 -42 8 -50 -568 130 172 -1136 W50 253 243 10 8 2 23 94 172 45 W51 256 230 26 8 18 205 130 172 409 W52 263 232 31 8 23 261 139 172 523 W53 280 265 15 8 7 80 107 172 159 W54 325 289 36 8 28 318 148 172 636 W55 293 315 -22 8 -30 -341 83 172 -682 W56 308 306 2 8 -6 -68 70 172 -136 W57 304 278 26 8 18 205 130 172 409 W58 1018 387 631 8 623 7080 563 172 14159 W59 275 309 -34 8 -42 -477 114 172 -955 W60 361 340 21 8 13 148 120 172 295 W61 311 294 17 8 9 102 111 172 205 W62 377 370 7 8 -1 -11 86 172 -23 W63 319 294 25 8 17 193 128 172 386 W64 325 282 43 8 35 398 159 172 795 W65 295 264 31 8 23 261 139 172 523 W66 273 291 -18 8 -26 -295 70 172 -591 W67 292 317 -25 8 -33 -375 92 172 -750 W68 314 299 15 8 7 80 107 172 159 W69 292 268 24 8 16 182 126 172 364 W70 300 276 24 8 16 182 126 172 364 W71 250 235 15 8 7 80 107 172 159 W72 256 256 0 8 -8 -91 63 172 -182 W73 253 249 4 8 -4 -45 77 172 -91 W74 263 258 5 8 -3 -34 80 172 -68 W75 260 270 -10 8 -18 -205 31 172 -409 W76 264 283 -19 8 -27 -307 74 172 -614 W77 245 261 -16 8 -24 -273 63 172 -545

Page 2 of 3 W78 256 271 -15 8 -23 -261 59 172 -523 2 W79 246 269 -23 8 -31 -352 86 172 -705 2 W80 272 234 38 8 30 341 151 172 682 2 W81 228 242 -14 8 -22 -250 55 172 -500 2 W82 236 280 -44 8 -52 -591 134 172 -1182 2 W83 246 273 -27 8 -35 -398 97 172 -795 2 W84 279 256 23 8 15 170 124 172 341 2 W85 253 245 8 8 0 0 89 172 0 2 W86 242 231 11 8 3 34 97 172 68 2

All building interior wall direct measurements were performed with either: #1 - 2360 No. 145469 and 43-89 No. 145391 Beta Alpha Wall Efficiency 0.098 0.155 Wall Background (cpm) 8 3.7 Wall MDA (dpm/100 cm2) 162 75

OR

#2- 2360 No. 156371 and 43-89 No. 164832 Beta Alpha Wall Efficiency 0.088 0.153 Wall Background (cpm) 8 3.7 Wall MDA (dpm/1 00 cm2) 172 76

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 3 of 3 Direct Measurements (Total Activity) Molycorp - Building 32 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/100cm2) 95% CL (dpm/100cm2) (dpm/100cm2)

Cl 257 246 11 8 3 34 97 180 68 C2 313 272 41 8 33 375 156 180 750 C3 265 289 -24 8 -32 -364 89 180 -727 C4 360 332 28 8 20 227 134 180 455 C5 357 336 21 8 13 148 120 180 295 C6 325 344 -19 8 -27 -307 74 180 -614 C7 300 303 -3 8 -11 -125 50 180 -250 C8 290 335 -45 8 -53 -602 135 180 -1205 C9 285 272 13 8 5 57 102 180 114 CIO0 309 306 3 8 -5 -57 74 180 -114 -795 C11 292 319 -27 8 -35 -398 97 180 C12 336 333 3 8 -5 -57 74 180 -114 932 C13 405 356 49 8 41 466 168 180 C14 360 365 -5 8 -13 -148 39 180 -295 -318 C15 337 343 -6 8 -14 -159 31 180 C16 339 368 -29 8 -37 -420 102 180 -841

All ceiling direct measurements were performed with 2360 No. 156371 and 43-89 No. 164832 Beta Alpha Ceiling Efficiency 0.088 0.153 Ceiling Background (cpm) 8 3.7 Ceiling MDA (dpm/100 cm2) 180 76

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 1 of I Direct Measurements (Total Activity) Molycorp - Building 32 Survey Unit (Affected Area)

Building Exterior (Walls and Roof)

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta LIincertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/100cm2) 95% CL (dpm/100cm2) (dpm/100cm2)

W1 245 237 8 8 0 0 85 172 0 W2 252 258 -6 8 -14 -152 30 172 -304 W3 263 266 -3 8 -11 -120 48 172 -239 W4 261 253 8 8 0 0 85 172 0 W5 266 266 0 8 -8 -87 60 172 -174 W6 277 274 3 8 -5 -54 71 172 -109 W7 271 266 5 8 -3 -33 77 172 -65 W8 246 295 -49 8 -57 -620 136 172 -1239 W9 265 264 1 8 -7 -76 64 172 -152 WI0 256 249 7 8 -1 -11 83 172 -22 Will 276 291 -15 8 -23 -250 56 172 -500 W12 255 277 -22 8 -30 -326 80 172 -652 W13 206 244 -38 8 -46 -500 117 172 -1000 W14 219 217 2 8 -6 -65 67 172 -130 W15 252 292 -40 8 -48 -522 121 172 -1043 W16 284 272 12 8 4 43 95 172 87 W17 296 320 -24 8 -32 -348 85 172 -696 W18 309 308 1 8 -7 -76 64 172 -152 W19 344 284 60 8 52 565 176 172 1130 W20 317 279 38 8 30 326 144 172 652 W21 284 282 2 8 -6 -65 67 172 -130 W22 270 265 5 8 -3 -33 77 172 -65 W23 298 343 -45 8 -53 -576 130 172 -1152 W24 300 327 -27 8 -35 -380 93 172 -761 R1 332 300 32 8 24 261 135 172 522 R2 372 376 -4 8 -12 -130 43 172 -261

All building exterior direct measurements were performe d with 2224 No. 129463 and 43-89 No. 169230 Beta Alpha Efficiency 0.092 0.154 Background (cpm) 8 3.7 MDA (dpm/100 cm2) 172 76

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 1 of 1 Direct Measurements (Total Activity) Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor (Interior) After Remeidal Activities

Location Unshield Beta Shield Beta Gross Beta Bkgd Net Direct Beta Uncertainty MDA Direct Alpha (1) cpm cpm cpm cpm cpm (dpm/1 00cm2) 95% CL (dpm/1 00cm2) (dpm/1 00cm2)

F5 399 292 107 78 29 330 303 497 659 F10 329 282 47 78 -31 -352 249 497 -705 F10 326 293 33 78 -45 -511 235 497 -1023 Fll 427 340 87 78 9 102 286 497 205 F20 334 253 81 78 3 34 281 497 68 F41 398 290 108 78 30 341 304 497 682 F46 377 304 73 78 -5 -57 274 497 -114 F51 384 308 76 78 -2 -23 276 497 -45 F56 700 630 70 78 -8 -91 271 497 -182 F57 396 340 56 78 -22 -250 258 497 -500 F58 379 303 76 78 -2 -23 276 497 -45 F61 1204 1123 81 78 3 34 281 497 68 F65 376 305 71 78 -7 -80 272 497 -159 F66 983 872 111 78 33 375 306 497 750 F68 336 312 24 78 -54 -614 225 497 -1227 F70 342 284 58 78 -20 -227 260 497 -455 F71 377 297 80 78 2 23 280 497 45 F72 373 297 76 78 -2 -23 276 497 -45 F73 365 359 6 78 -72 -818 204 497 -1636 F73 347 302 45 78 -33 -375 247 497 -750 F74 314 300 14 78 -64 -727 214 497 -1455 F75 373 304 69 78 -9 -102 270 497 -205 F76 362 276 86 78 8 91 285 497 182 F77 357 290 67 78 -11 -125 268 497 -250 F77 359 331 28 78 -50 -568 229 497 -1136 F79 385 308 77 78 -1 -11 277 497 -23 F81 365 300 65 78 -13 -148 266 497 -295 F82 419 340 79 78 1 11 279 497 23 F84 435 348 87 78 9 102 286 497 205 F85 440 347 93 78 15 170 291 497 341 F86 328 272 56 78 -22 -250 258 497 -500 Page 1 of 2 F87 394 310 84 78 6 68 283 497 136 F88 386 301 85 78 7 80 284 497 159 F90 416 318 98 78 20 227 295 497 455

All ceiling direct measurements were performed with 2360 No. 156371 and 43-89 No. 164832 Beta Alpha Ceiling Efficiency 0.088 0.153 Ceiling Background (cpm) 78 2.4 Ceiling MDA (dpm/100 cm2) 497 65

(1) - A beta to alpha ratio factoring (1:2, beta to alpha) was used to provide a more accurate alpha activity determination then sampling.

Page 2 of 2 Elevated Direct Measurements (Total Activity) and Averaging Results Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor (Interior)

Location Direct Beta Direct Alpha Over Area Exceeds Limits Averaged Value Within Limits? 2 (dpm/1OOcm 2) (dpm/1OOcm 2) (cm2) Maximum Average (over 1 m ) Yes/No

F5 8124 16248 Yes Yes Remediated NA F10 12204 24407 Yes Yes Remediated NA F11 974 1947 No Yes Remediated NA F20 850 1699 No Yes Remediated NA F41 3018 6035 Yes Yes Remediated NA F51 7195 14389 Yes Yes Remediated NA F56 1558 3115 Yes Yes Remediated NA F57 522 1044 No Yes Remediated NA F58 638 1275 No Yes Remediated NA F61 726 1451 No Yes Remediated NA F65 859 1717 No Yes Remediated NA F66 1124 2248 No Yes Remediated NA F68 1151 2301 No Yes Remediated NA F70 938 1876 No Yes Remediated NA F71 2177 4354 Yes Yes Remediated NA F72 1531 3062 Yes Yes Remediated NA F73 2575 5150 Yes Yes Remediated NA F74 947 1894 No Yes Remediated NA F75 540 1080 No Yes Remediated NA F76 4266 8531 Yes Yes Remediated NA F77 4425 8850 Yes Yes Remediated NA F79 514 1027 No Yes Remediated NA F81 2151 4301 Yes Yes Remediated NA F82 691 1381 No Yes Remediated NA F84 1257 2513 No Yes Remediated NA F85 779 1558 No Yes Remediated NA F86 3487 6973 Yes Yes Remediated NA F87 2549 5097 Yes Yes Remediated NA F88 1584 3168 Yes Yes Remediated NA F90 8266 16531 Yes Yes Remediated NA

Page 1 of 2 Building Walls (Interior)

Location Direct Beta Direct Alpha Over Area Exceeds Limits Averaged Value Within Limits? (dpm/1 00cm 2) (dpm/1 00cm 2) (cm2) Maximum Average (over 1 m2) Yes/No

W58 7080 14159 100 Yes Yes Marked for Removal NA

Building Exterior (Walls and Roof)

Location Direct Beta Direct Alpha Over Area Exceeds Limits Averaged Value Within Limits? 2 2 (dpm/1 00cm ) (dpm/1OOcm ) (cm1C2) Maximum Average (over I M2 ) Yes/No 100 W19 NA 1130 No Yes 456 Yes

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/1 00cm) 95% CL Number

F1 -6 16.2 152 -0.5 2.4 12.3 F2 -24 26.1 152 -0.5 2.4 12.3 F3 0 11.1 152 -0.5 2.4 12.3 F4 -67 41.0 152 -0.5 2.4 12.3 F5 18 23.3 152 -0.5 2.4 12.3 F6 -55 37.5 152 -0.5 2.4 12.3 F7 -6 16.2 152 -0.5 2.4 12.3 F8 91 47.4 152 2.4 5.2 12.3 F9 -6 16.2 152 -0.5 2.4 12.3 F10 -30 28.7 152 -0.5 2.4 12.3 Fl1 30 28.7 152 -0.5 2.4 12.3 F12 -109 51.6 152 5.3 7.7 12.3 F13 -61 39.3 152 2.4 5.2 12.3 F14 -24 26.1 152 2.4 5.2 12.3 F15 -91 47.4 152 -0.5 2.4 12.3 F16 -6 16.2 152 -0.5 2.4 12.3 F17 30 28.7 152 2.4 5.2 12.3 F18 12 20.1 152 -0.5 2.4 12.3 F19 42 33.2 152 -0.5 2.4 12.3 F20 61 39.3 152 -0.5 2.4 12.3 F21 24 26.1 152 2.4 5.2 12.3 F22 6 16.2 152 2.4 5.2 12.3 F23 -6 16.2 152 -0.5 2.4 12.3 F24 42 33.2 152 -0.5 2.4 12.3 F25 -42 33.2 152 -0.5 2.4 12.3 F26 -12 20.1 152 -0.5 2.4 12.3 F27 -48 35.2 152 2.4 5.2 12.3 F28 0 11.1 152 -0.5 2.4 12.3 F29 6 16.2 152 -0.5 2.4 12.3 F30 48 35.2 152 2.4 5.2 12.3 F31 30 28.7 152 -0.5 2.4 12.3 F32 -24 26.1 152 -0.5 2.4 12.3 F33 -42 33.2 152 -0.5 2.4 12.3 F34 -12 20.1 152 5.3 7.7 12.3 F35 -60 39.0 152 2.4 5.2 12.3 F36 0 11.1 152 -0.5 2.4 12.3 F37 -48 35.2 152 -0.5 2.4 12.3 F38 -18 23.3 152 2.4 5.2 12.3 F39 0 11.1 152 -0.5 2.4 12.3 F40 -30 28.7 152 -0.5 2.4 12.3 F41 -278 81.2 152 -0.5 2.4 12.3 F42 -278 81.2 152 -0.5 2.4 12.3 F43 -6 16.2 152 2.4 5.2 12.3 F44 12 20.1 152 -0.5 2.4 12.3 F45 0 11.1 152 2.4 5.2 12.3 F46 -42 33.2 152 -6 8.2 12.3 F47 -36 31.0 152 -0.5 2.4 12.3

Page 1 of 2 F48 30 28.7 152 2.4 5.2 12.3 F49 -60 39.0 152 -0.5 2.4 12.3 F50 24 26.1 152 2.4 5.2 12.3 F51 6 16.2 152 -0.5 2.4 12.3 F52 -12 20.1 152 -0.5 2.4 12.3 F53 -24 26.1 152 2.4 5.2 12.3 F54 -24 26.1 152 2.4 5.2 12.3 F55 -48 35.2 152 2.4 5.2 12.3 F56 -48 35.2 152 2.4 5.2 12.3 F57 66 40.8 152 -0.5 2.4 12.3 F58 30 28.7 152 -0.5 2.4 12.3 F59 -42 33.2 152 2.4 5.2 12.3 F60 54 37.2 152 -0.5 2.4 12.3 F61 -30 28.7 152 2.4 5.2 12.3 F62 -30 28.7 152 2.4 5.2 12.3 F63 -12 20.1 152 -0.5 2.4 12.3 F64 -54 37.2 152 -0.5 2.4 12.3 F65 24 26.1 152 -0.5 2.4 12.3 F66 54 37.2 152 -0.5 2.4 12.3 F67 -42 33.2 152 2.4 5.2 12.3 F68 6 16.2 152 2.4 5.2 12.3 F69 -18 23.3 152 -0.5 2.4 12.3 F70 12 20.1 152 -0.5 2.4 12.3 F71 30 28.7 152 -0.5 2.4 12.3 F72 -36 31.0 152 -0.5 2.4 12.3 F73 12 20.1 152 -0.5 2.4 12.3 F74 -36 31.0 152 2.4 5.2 12.3 F75 30 28.7 152 2.4 5.2 12.3 F76 -18 23.3 152 -0.5 2.4 12.3 F77 12 20.1 152 2.4 5.2 12.3 F78 12 20.1 152 2.4 5.2 12.3 F79 18 23.3 152 -0.5 2.4 12.3 F80 48 35.2 152 2.4 5.2 12.3 F81 -66 40.8 152 -0.5 2.4 12.3 F82 -24 26.1 152 2.4 5.2 12.3 F83 30 28.7 152 -0.5 2.4 12.3 F84 66 40.8 152 -0.5 2.4 12.3 F85 -42 33.2 152 -0.5 2.4 12.3 F86 -42 33.2 152 -0.5 2.4 12.3 F87 -66 40.8 152 -0.5 2.4 12.3 F88 48 35.2 152 2.4 5.2 12.3 F89 -12 20.1 152 2.4 5.2 12.3 F90 12 20.1 152 2.4 5.2 12.3

#1 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info: Beta Alpha Background (cpm) 44 0.14 Bkgd ct. time 50 50 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 152 12.3

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Walls (Interior)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/100cm) 95% CL (dpm/100cm) 95% CL Number

W1 -78 44.0 152 -0.4 2.1 12.3 W2 24 26.1 152 -0.4 2.1 12.3 W3 -18 23.3 152 -0.4 2.1 12.3 W4 -36 31.0 152 -0.4 2.1 12.3 W5 12 20.1 152 -0.4 2.1 12.3 W6 -66 40.8 152 2.4 5.2 12.3 W7 -42 33.2 152 -0.4 2.1 12.3 W8 6 16.2 152 -0.4 2.1 12.3 W9 36 31.0 152 2.4 5.2 12.3 WI0 -36 31.0 152 -0.4 2.1 12.3 Wil 1 -24 26.1 152 -0.4 2.1 12.3 W12 -42 33.2 152 -0.4 2.1 12.3 W13 6 16.2 152 -0.4 2.1 12.3 W14 -60 39.0 152 -0.4 2.1 12.3 W15 -66 40.8 152 -0.4 2.1 12.3 W16 48 35.2 152 2.4 5.2 12.3 W17 -66 40.8 152 -0.4 2.1 12.3 W18 6 16.2 152 -0.4 2.1 12.3 W19 -6 16.2 152 -0.4 2.1 12.3 W20 -109 51.6 152 -0.4 2.1 12.3 W21 -48 35.2 152 2.4 5.2 12.3 W22 -78 44.0 152 5.5 7.8 12.3 W23 -48 35.2 152 2.4 5.2 12.3 W24 -25 26.6 152 2.2 5.0 12.3 W25 79 44.3 152 2.2 5.0 12.3 W26 50 35.9 152 -0.6 2.6 12.3 W27 63 39.9 152 -0.6 2.6 12.3 W28 8 17.6 152 -0.6 2.6 12.3 W29 -46 34.6 152 -0.6 2.6 12.3 W30 -17 22.8 152 2.2 5.0 12.3 W31 -78 44.0 152 -0.4 2.1 12.3 W32 -24 26.1 152 -0.4 2.1 12.3 W33 0 11.1 152 -0.4 2.1 12.3 W34 30 28.7 152 -0.4 2.1 12.3 W35 -54 37.2 152 -0.4 2.1 12.3 W36 -60 39.0 152 -0.4 2.1 12.3 W37 48 35.2 152 -0.4 2.1 12.3 W38 -42 33.2 152 -0.4 2.1 12.3 W39 -42 33.2 152 2.4 5.2 12.3 W40 -54 37.2 152 2.4 5.2 12.3 W41 -24 26.1 152 -0.4 2.1 12.3 W42 24 26.1 152 2.4 5.2 12.3 W43 -12 20.1 152 2.4 5.2 12.3 W44 -6 16.2 152 -0.4 2.1 12.3 W45 -30 28.7 152 2.4 5.2 12.3 W46 6 16.2 152 -0.4 2.1 12.3

Page 1 of 2' W47 12 20.1 152 -0.5 2.4 12.3 W48 -12 20.1 152 -0.5 2.4 12.3 W49 18 23.3 152 5.3 7.7 12.3 W50 -24 26.1 152 2.4 5.2 12.3 W51 -48 35.2 152 -0.5 2.4 12.3 W52 -24 26.1 152 -0.5 2.4 12.3 W53 -48 35.2 152 2.4 5.2 12.3 W54 42 33.2 152 -0.5 2.4 12.3 W55 -6 16.2 152 2.4 5.2 12.3 W56 42 33.2 152 -0.5 2.4 12.3 W57 -42 33.2 152 2.4 5.2 12.3 W58 54 37.2 152 2.4 5.2 12.3 W59 -24 26.1 152 2.4 5.2 12.3 W60 78 44.0 152 -0.5 2.4 12.3 W61 -6 16.2 152 2.4 5.2 12.3 W62 -109 51.6 152 2.4 5.2 12.3 W63 36 31.0 152 26.0 17.0 12.3 W64 36 31.0 152 2.4 5.2 12.3 W65 12 20.1 152 2.4 5.2 12.3 W66 -6 16.2 152 2.4 5.2 12.3 W67 12 20.1 152 2.4 5.2 12.3 W68 -60 39.0 152 0.5 2.4 12.3 W69 0 11.1 152 -0.5 2.4 12.3 W70 -48 35.2 152 2.4 5.2 12.3 W71 -18 23.3 152 -0.5 2.4 12.3 W72 42 33.2 152 -0.5 2.4 12.3 W73 -30 28.7 152 -0.5 2.4 12.3 W74 -79 44.3 152 5.3 7.7 12.3 W75 30 28.7 152 -0.5 2.4 12.3 W76 -90 47.1 152 2.4 5.2 12.3 W77 0 11.1 152 -0.5 2.4 12.3 W78 25 26.6 152 2.4 5.2 12.3 W79 60 39.0 152 5.0 7.5 12.3 W80 30 28.7 152 -0.5 2.4 12.3 W81 36 31.0 152 -0.5 2.4 12.3 W82 -5.8 16.1 152 -0.5 2.4 12.3 W83 42 33.2 152 -0.5 2.4 12.3 W84 36 31.0 152 -0.5 2.4 12.3 W85 30 28.7 152 5.3 7.7 12.3 W86 -24 26.1 152 5.3 7.7 12.3

#1 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info: Beta Alpha Background (cpm) 44 0.14 Bkgd ct. time 50 50 Sample ct. time 1 I Efficiency 0.165 0.344 MDA 152 12.3

Page 2 of 2 Removable Surface Activity Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/1 00cm2) 95% CL (dpm/100cm2) 95% CL Number

C1 -66 40.8 155 2.1 4.9 12.6 I C2 12 20.1 155 2.1 4.9 12.6 1 C3 18 23.3 155 -0.7 2.8 12.6 1 C4 54 37.2 155 -0.7 2.8 12.6 1 C5 24 26.1 155 -0.7 2.8 12.6 1 C6 -36 31.0 155 -0.7 2.8 12.6 1 C7 -54 37.2 155 -0.7 2.8 12.6 1 C8 24 26.1 155 2.1 4.9 12.6 I C9 36 31.0 155 2.1 4.9 12.6 1 C10 -18 23.3 155 -0.7 2.8 12.6 1 C1l 18 23.3 155 -0.7 2.8 12.6 I C12 54 37.2 155 -0.7 2.8 12.6 1 C13 6 16.2 155 2.1 4.9 12.6 1 C14 -18 23.3 155 2.1 4.9 12.6 I C15 66 40.8 155 2.1 4.9 12.6 1 C16 -36 31.0 155 -0.7 2.8 12.6 1

#1 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info: Beta Alpha Background (cpm) 46 0.16 Bkgd ct. time 50 50 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 155 12.6

Page 1 of 1 Removable Surface Activity Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Exterior (Walls and Roof)

Location Removable Beta Uncertainty MDA Removable Alpha Uncertainty MDA Instrument (see map) (dpm/100cm2) 95% CL (dpm/100cm2) 95% CL Number

Wi 33 25 129 -0.4 2.1 12.1 W2 29 24 129 2.0 4.7 12.1 W3 0 10 129 2.0 4.7 12.1 W4 13 17 129 -0.4 2.1 12.1 W5 -59 32 129 -0.4 2.1 12.1 W6 17 19 129 5.0 7.4 12.1 W7 -67 34 129 -0.4 2.1 12.1 W8 29 24 129 2.0 4.7 12.1 W9 -25 22 129 2.0 4.7 12.1 WI0 4 13 129 -0.4 2.1 12.1 Will 29 24 129 2 4.7 12.1 W12 -21 21 129 -0.4 2.1 12.1 W13 -24 26 152 2.1 4.9 14 W14 24 26 152 0.7 2.8 14 W15 -36 31 152 5 7.5 14 W16 -30 29 152 -0.7 2.8 14 W17 109 52 152 -0.7 2.8 14 W18 96 49 152 -0.7 2.8 14 Wi9 12 20 152 2 4.7 14 W20 30 29 152 -0.3 1.9 14 W21 18 23 152 -0.7 2.8 14 W22 -30 29 152 0.5 2.4 14 W23 6 16 152 2 4.7 14 W24 18 23 152 -0.7 2.8 14 RI 18 23 152 2 4.7 14 R2 -24 26 152 0.7 2.8 14

#1 - Ludlum 2929 No. 115563 with 43-10 No. 127216 Info: Beta Alpha Background (cpm) 70 0.14 Bkgd ct. time 50 50 Sample ct. time 1 1 Efficiency 0.239 0.35 MDA 129 12.1

#2 - Ludlum 2929 No. 152202 with 43-10 No. 156519 Info (3-6): Beta Alpha Background (cpm) 44 0.26 Bkgd ct. time 50 50 Sample ct. time 1 1 Efficiency 0.165 0.344 MDA 152 14

Page 1 of 1 Elevated Removable Surface Activity Measurements Molycorp - Building 32 Survey Unit (Affected Area)

No elevated removable surface activity was reported above limits.

Page 1 of I Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Floor Exposure Rate After Remediation Activities* Location Exposure Rate Net Exp Rate Exposure Rate Net Exp Rate (uR/hr) (uR/hr) (uR/hr) (uRPhr)

F1 11 0 F2 11 0 F3 11 0 F4 17 6 F5 12 1 12 1 F6 12 1 F7 13 2 F8 13 2 F9 13 2 14 3 12 1 F10 1 F11 15 4 12 F12 12 1 F13 12 1 F14 13 2 F15 13 2 F16 15 4 F17 15 4 F18 15 4 F19 14 3 F20 13 2 12 1 F21 13 2 F22 13 2 F23 13 2 F24 13 2 F25 13 2 F26 14 3 F27 13 2 F28 15 4 F29 15 4 F30 15 4 F31 15 4 F32 14 3 F33 14 3 F34 15 4 F35 15 4 F36 14 3 F37 13 2 F38 16 5 F39 17 6 F40 16 5 F41 16 5 15 4 F42 15 4 F43 17 6 F44 18 7 F45 16 5

Page 1 of 2 F46 15 4 15 4 F47 15 4 F48 20 9 F49 18 7 F50 17 6 F51 16 5 15 4 F52 17 6 F53 23 12 F54 16 5 F55 17 6 F56 16 5 15 4 F57 14 3 22 11 F58 19 8 20 9 F59 17 6 F60 16 5 F61 16 5 14 3 F62 15 4 F63 18 7 F64 18 7 F65 18 7 15 4 F66 16 5 20 9 F67 15 4 F68 17 6 22 11 F69 18 7 F70 18 7 15 4 F71 15 4 20 9 F72 15 4 22 11 F73 38 27 22 11 F74 16 5 24 13 F75 15 4 24 13 F76 17 6 20 9 F77 18 7 22 11 F78 38 27 F79 16 5 16 5 F80 16 5 F81 14 3 20 9 F82 14 3 24 13 F83 38 27 F84 17 6 24 13 F85 17 6 16 5 F86 14 3 20 9 F87 15 4 16 5 F88 15 4 14 3 F89 15 4 F90 15 4 16 5

Background dose rate: 11 uR/hr with Model 19, No.22526

* Exposure rates taken in remediated sample locations only.

Page 2 of 2 Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Walls (Interior)

Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr)

Wi 15 4 W2 11 0 W3 11 0 W4 10 -1 W5 10 -1 W6 10 -1 W7 10 -1 W8 11 0 W9 11 0 WlO 14 3 Wil 14 3 W12 14 3 W13 15 4 W14 15 4 W15 15 4 W16 15 4 W17 16 5 W18 16 5 W19 16 5 W20 16 5 W21 16 5 W22 15 4 W23 15 4 W24 14 3 W25 14 3 W26 14 3 W27 14 3 W28 14 3 W29 13 2 W30 13 2 W31 13 2 W32 13 2 W33 13 2 W34 13 2 W35 13 2 W36 13 2 W37 13 2 W38 13 2 W39 13 2 W40 13 2 W41 13 2 W42 13 2 W43 13 2

Page 1 of 2 W44 13 2 W45 13 2 W46 13 2 W47 7 -4 W48 7 -4 W49 7 -4 W50 7 -4 W51 7 -4 W52 8 -3 W53 6 -5 W54 7 -4 W55 8 -3 W56 10 -1 W57 9 -2 W58 16 5 W59 9 -2 W60 13 2 W61 11 0 W62 14 3 W63 10 -1 W64 10 -1 W65 9 -2 W66 9 -2 W67 9 -2 W68 9 -2 W69 8 -3 W70 10 -1 W71 8 -3 W72 8 -3 W73 8 -3 W74 10 -1 W75 10 -1 W76 10 -1 W77 10 -1 W78 10 -1 W79 10 -1 W80 10 -1 W81 10 -1 W82 10 -1 W83 8 -3 W84 8 -3 W85 9 -2 W86 6 -5

Background dose rate: 11 uR/hr with Model 19, No.22526

Page 2 of 2 Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Ceiling (Interior)

Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr)

C1 5 -6 C2 9 -2 C3 9 -2 C4 12 1 C5 10 -1 C6 12 1 C7 10 -1 C8 10 -1 C9 9 -2 C10 9 -2 Cll 10 -1 C12 10 -1 C13 11 0 C14 12 I C15 10 -1 C16 11 0

Background dose rate: 11 uR/hr with Model 19, No.22526

Page 1 of I Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Exterior (Walls)

Location Exposure Rate Net Exp Rate (uR/hr) (uR/hr)

WI 12 0 W2 12 0 W3 12 0 W4 13 W5 13 2 2 W6 13 1 W7 14 2 W8 14 2 W9 13 I WI0 14 2 Wll 13 I W12 13 1 W13 9 -3 W14 9 -3 W1 5 9 -3 W16 10 -2 W17 11 -1 W18 12 0 W19 11 -1 W20 11 -1 W21 12 0 W22 11 -1 W23 11 -1 W24 13 1

Background dose rate: 11 uR/hr with Model 19, No.22526

Page I of I Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Building Exterior (Roof)

Location Exposure Rate Net Exp Rate (uR/hr) (uRlhr)

RI 11 0 R2 14 3 -1 see map 10 -1 see map 10 -1 see map 10 see map 12 12 1 see map 3 see map 12 3 see map 14 1 see map 14 23 see map 12 1 see map 13 2 see map 12 1 see map 14 3 1 see map 12 2 see map 13 1 see map 12 3 see map 14

Background dose rate: 11 uR/hr with Model 19, No.22526

Page 1 of I Summary of Building Surface Direct Reading (Total Activity) Results Molycorp - Building 32 Survey Unit (Affected Area)

Including all building interior and exterior measurements

Beta Alpha n x s 9a n x s 11a 220 -49 271.1 -19.1 220 -99 542.1 -38.2

ti-, 1.654

GuidelineslConditions Satisfied? Beta Alpha Yes Yes Summary of Exposure Rate Measurements Molycorp - Building 32 Survey Unit (Affected Area)

Including all building interior and exterior measurements (uR/hr)

n X S 234 2.3 4.3 2.7

tl- 1.654

GuidelineslConditions Satisfied? Yes RPP-OP-019

I DDO-138 Radiation Protection Survey Report I Site: Molycorp / Washington, PA

Section 1: Survey Information 3-1" 3IW- 3o• o3-"oc>5#. atime: Lo n: Survey Issue Log Number RWP Number Purpose of Survey: Page Of A fl RWP 0 Routine Survey C3Unconditional Release ; Other Alpha Smear Beta 2 I.J 4'C Number dpm/lOOcm dprrdl00cm2 1 2 3 4 5 6 "7 8 9 10

12 13 _ 14. 15 16 17 1_____ 18 19 20 21 22 23 24 25 Readnqs:26

= Rope, 00 = mRern/h gamma 00 C = mRemlh gamma contact (D)= Smear Location 7 = Air -Sample Location -X-X-X- 00 f = mRemlh beta 00 j3C= mRem/h beta contact -0- = Large Area Wipe =Bulk Material Sample Boundary. or Barrier Section 2: Instrument Used Instrument Model/SN: Cal Due Probe Model/SN: Cal Due Detector Eff.: MDA: Oher z~ahi/; e•,o. 7-,--o'qDate: ,I.PSWea,€ Date: C56,.6/,.,610 P-317-,,c.,q i•m/d5m)VIP7 '2R. 6 ý____012-4 'IV4P/It9I2 C~4 1'~

,/22-. 3 13-,,//L•,q t-6-o3 oc.3 ,, soel.2ac .-. 146 , .d ./ ,--I ,3oI q5'ý15q .6 - oo40 5 ~--3sI~-;, ~OAR .,?,0tx.2 7 P-.7,72 L< 1 aAV Section 3: Review and Approval Su Ly Pefre B Sg) Area Posted and/or Barricaded: =Date and Time-. Yes-- O- o Not Required 61

'* •_ tion\ S.afetyO ffifcei(P rin t, N.Namme &&SS W`_, Date and Time:,•"€•_ ••" -

I Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal a P Scan 1p Modl/Nue Modl/N ue Scan IDA Static Static Modl/SDu Moel/N De MA DA MDA MVDA

Instrument 236O//AI644O4 I--.41-?T ~s -ve7 AII A( A ______Data m~k li'eeZ~ Y--~~I/A

Print N me Si naw Date Performed &6&A4 4;iA/ 14 Iq By:

1Static S er Location S3can a Scan (us) Static a Static ER Sdmears M22 (cpm) (cpm) (unsh) (sh) (cpm) (ýirem/hr) (pl 0c (cpm) (cpm) a1

341• S I -~o r- - J-) 0 44 31A b . J4 -O £• £SQfl JC6 1331 33 1YA /l;L OkAT I !R ~~/ /400il-- 3S-3 3,21 3 014g -5

~~3 ?qbilKiL 132 -0. - (I. ~~rLL i•7~ ~ ~ ,5 Žsr~ A~ L • z p-iaI '5' 6LO /0 0 ____/6$7: I2Lf /001< qV-24ii 4 LII /2. 0 LL~l 176)0 /0 'hi 30~±z ~ P :!13- I400 471 3*1~ ~--,~ rp-M/ J)1. -• JSL. J;5L IQ -2, -'1 900Q 111 l~i5~~? 13Z3L -- 6 K ? 31l lilts A3 1•L -OA -(aL -2. I2& 0 (e ý31L 31Y 1l /5

~L ,~o 213 '

4 :V)( As~I't13 -± 1f X

2 /4 00 6 331o AqqL1 3 2~r -'

Page J1* f( ý .9

Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal Sca Scan SttcSai ModeIISN Due ModeIISN Due MVDVDA D MA Instrument Data J

Print Name Signature Date

Performed ______By:

* Static Smears Location f3Scan ax Scan (unh) Static cc Static ER dm10C2 (p (cpm) (cpm) (sh) (cpm) (pLrem/hr) (p~ 0c 2 (cpm)(cpm)a

,- .ýC0 0 sp 37.3 - 3iŽ 1

r-~ I iL l 2Z0. l 1-5 Yi2 3 IR

0.LQ0c 313 AXL221 -o

-0 30 /0 1! Ij T-3 0 -478 lip 0.?0~ Aa i L ii -11

%0 -3,20 ____ 0j~ 0

AL,.YO 0 0V1 1 441

___00 -3•4 4'C /L(#2

V# A214 /70 311.~i 16 ±

Page 3 of 19' 4

Radiological Survey Results - Survey Location Indicator

Survey Area Information:

p3 Instrument Cal Probe Cal ac p Scan (x Model/SN Due ScnMD Stictac ModeIISN Due MDA DA MDA MDA

Instrument______Data______

Print Name Signature Date

Performed ______By.

pStatic Smar Location 'Scan (x Scan (us) Static ac Static ER Sdmears M2 (cpm) (cpm) (unsh) (sh) (cpm) (pxremlhr) (dpX 0c 2 (cpm) (cpm) c' f- SS 1600 ilUi415 d3~ 0? 12., 1 < ,F-54;? ).90 0 ~$6x 3,1( -/0 i46 2.,y 41h?

F-5 2706 7 61 Attk. 1lL /3~ L -0,A- -30 f - 66i oq 9 12 14 -6,~ 513j Pr -4 r0 S i:30 2 l rA i

F-6), JIQ 6 1 .2 391 .7q5 J-3 15± P -30 -6ý 06- .3 7& /0 - /. 2-Ž/~L ,r-63c~ /?cO 7 A2 / Al'i -6 q

100/4,6 1 9 ~-03 __ ilLa' F~52 22-'01f ~•L4± ~i~

,,c- J(.66 - I() 3j f -3 C ,f -;> &sSO 6 1s3 ~~m31 i~/21,• F-?71Y 240 51 ~.2 13 16 )4 -3 /?06 7 ~ 3'(b iL 15 36 F___ 1260 ALZq'~ S? le,-11 E22 /90 ± g-46 Ij in1. ý l R

f_ 7Ž ______0 L //6 1 -1 16~06 CD 57 - ?tfo Page 4( of 1tý Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal Saa Scan1 Scan Statica Static MDA Model/SN Due Model/SN Due MDA MDA MDA Instrument Data _ _ At ffi

Print Name Signature Date Performed By:

Location 1 Scan x Scan 13Stt Static a Static ER Smears (cpm) (cpm) (unsh) (sh) (cpm) (jtrem/hr) (dpm/1O0 cm2) (cpm) (cpm) CL 13 F-/-,00 IQ 4, /9-- It :f2.,,x1• F -9r±3 T-Fo0 2!, /964 ILI- 3!1 -0. 36h

1?00),J2L ____R 364 IR rn6-6.

F -a 4 1?0 0 67 I'•4L , !" ,q ,9 1 4 7 (3 0 •. 1, J 3S / S -o._f -,2 • 1900qo o qh7 3g ,,d3 /Z Al2 -42

F. 16

" ...... s IT

Page 5, of __f Radiological Survey Results - Calculational Sheet

Locsation( cs) J Static (sh) Grs Minus Bkgd Net p 2 L cto u s)(cpm) Grs (Net f) dpmf~l 00 cm2

I ___ 1f______/ /2

~~~~~1I 3.. 3__ _ _

F_ _ _ 32-0 36d___ le_ _ -60-5 O

F-- '21 3i5'-'1 9 __ _

iR,53___ 2;10? 30

F-/4S ______

/C 3~ 3,// 'IJg ~ '( L 6i.21i 2lC 3 -'1

F ,?O O ______

2 2~~ ~...... ~ -~

Instrum~ent Probe Model/SN: Detctorldpm) Material Bkgd Model/SN: ______

Page -6 of 19- Radiological Survey Results - Calculational Sheet

Locan) ( Static (sh) Gross Minus Bkgd Net P LctoStatic a ) (Net P3) dpm/100 cm2 Loaton(us)(cpm) (cpm) i

! Ia' *333• 5 ".- 3 :- 8P -Il 9 F• 3t Is- 3A- 1x•-3A q. i/• 7-7q

- "3 f-33 3 1-5 73-6S 4- 39 #.- . A t- 3-39, 9 /0 &o A*-0 0 -38 -3 b ,. 37S 9- 73 -*6 - -- Jc-3 59 477 : 7(0 r--39A 1-ii 3 AL S -78- 0 C F - !LL F 3-3/0.-J6 :;211 q1e/9• 3 // 33o-7 F-1? 36.. '7 9S J7 /6-0 -q765 -A4SLT /06 :Q 38' 3"l "77 W.6 3/9 -/0 387 -A16 T76 '1O0 3q 0 3" ofz 553g Y6 •/o (0 319 -4• F S,-6 AO•z /

Ay/O

Page -I of i•' Radiological Survey Results - Calculational Sheet

Locti (uStatic Static (sh) G ss Minus Bkgd Net f Lcto us)(cpm) Grs (Net ~) dpm/100 cm 2

- &;IT2Z2S /622'

______& : 1-_ _ ,) 2 .F-63 . ?~/() 170 /0,(0

Lrn44-S33 3,2~q0 ~? I

F - -6 415g <2?9IVj /06~ _ __ _

-JL1 611 36 3 2 / ______) 7______/?/ 3

F- 27 / ~ 6(1, 412/

f_-2 q "6 __ _ 3 1/ -31

0~~lL. 'Al . __ __ 9- _ 1-; 2 ?e

___5- 93Ž"21'3'I _

Material Bkgd

Page i' ofJL Radiological Survey Results - Calculational Sheet

Locatio (uStatic Static (sh) rs Minus Bkgd Net P~ Lcto us)(cpm) =rs:(Net f3) dpmlIOO cm 2

F - 13 i&1 a ~ 4 qq.. ? 13? F-A6,q -5.2 9L'i ~2~ / ;k S 9-5- JiL qI~ 2?;g 94 2'I 9 2 qn4t '~9?"V'/' F-~9•L -:?~ 1I 2•d

4~V2'~SýS /2 __

Id~L 35 //2 q.q ___

Instrument Probe ModeIISN: Detector Eff.: Material Bkgd Model/SN: ______(cpm/dem)

'Il ZZ4¶

Pagejq of Iý Building 32 North

Sc a~le: m x14m Interior ½-

9pjc•4 194'Q Radiological Survey Results - Survey Location Indicator Survey Area Information:

Probe Cal Scan13j3 ScancanStatic Static Instrument Cal MDA Due Model/SN Due Scan Model/SN MDA MDA MDA Instrument 7q2 . .- o2- • ,_ - - /•.- '06 Data 2zjao f Y Lzl(• 7-10-04.3. j q /- 7-l..o;- - I. L \, a II -xo43rIO(e/Iztojiz. T-ta-b2. ZO

______A1 YI-4 1_ 4 Print Name Signature Date Performed MARK 3BLA•.. eAK &NAQ __--_- _ By:

3 Static Smears (dpm/100 cm2) Location 3 Scan ccScan (unsh) Static a Static (.irem/hr)ER (cpm) (cpm) (uns)(cpm) (cpm)(sh) (cpm) o_ j3

Wo-! o 7 - - I 1j -0.9 -.- __ •o-- 3o2.00 7- •j-j I -,' . 2-70 il 2 - - 2 I~! -, U)J- ,. 30. - - 0 tA-S,- 30• / - oI -,1 -t,, .-- o L - 0 -, 14

LJ- 3oS L - - 3 (o-L il L-l . 3LP L. - - 13 LL/ -±±, _- _____ LA)- 0 2G - - 4 I -,L. - - t 5 Ž- - k Lq-LU-If I .O z2- - - 3o wI ,L/ 1 l 0 __,-_ _ 3oo - - 0 J. -.

-33q j -- " . -q

Wg- /L a o - - i -. ,

W_- d• 9 0 2 m- L- - 3100- - sI0 -,ý S-W- -3J41 - I0 1 __795 W 2-7-. 3j* 2- S1 w -- 3 3a 1101S 300 -79

~Z3 11& 2- ~ j9 50 1vZ300 2.. (03S__

-Page -)I of I•' Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal a p Scan a p Model/SN Due Mod el/SN Due Scan MVDA Static Static MVDA MVDA MVDA Instrument :?7, 1 la -:0-163 iI3Z_1l iz&q- 4 - - Data 2_%C)' / ý '- 5 I co 0-.1~i~-.

110*1 TH-& ______Print Name ISignature Date Performed MAIZK 13L-A"~CIAK ____ By:

Scnc Sa Static Smears Location 13Sa cn (unsh) Static a Static ER (dpmll 00 cm2) (cpm) (cpm) (cpm) (sh) (cpm) Qýtrem/hr) (cpm)

ua1 0__ L3 2. 3 to- 1L A 0 1 2- 13 ~ w-3 a OL 00 5, 1 W- D3Iý3 -- -3 J1 zfi U)-3f 330 3 3 iz-z 30 W-35 aG d- 0 1h±-5i/

w35? i0 - xz8 V.)_38 -2DL9 0 1 1 iL&

W- 31 A go ___- L 130 W-4f 'a so 4 3

4-'1Q 1)90 L~ -13 ~ r

ILA43 a- 0 1 13 df -30

Ž%zAL6 doOA 3+ 0 3 02

_1-4 01C 1?17 - - 1 L~ r4 ____ 4LCA - ~ lL ~ ~

(A.) 3f i - fi j~ 7

£4-SI fi 3i~ - -' i~ ~I j,4A

Page I - of Is, Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal ac Scan c 3 Model/SN Due MDA Static Static Model/SN Due MDA MDA MDA Instrument t-.",, /-,'l/6-•.$2 •'5-• 14011?"4 ^114 -76 /7 Data

Prnt Name Signature Date Performed maK MLAtjc-SAl . , -. By: /,IL•' €.;* J A. 3,-•-.-o.

Smears Location 1 Scan acScan { Sti Static a Static ER (cpm) (cpm) (unsh) (sh) (cpm) (pGrem/hr) (dpm/100 cm 2) (cpm) (cpm) S 3 ( 0 - - L 1 -. I -k, w--.655- 3- - -o JL 2 ,q -A6

o-3 ,o - - o 1L -, -1ASS 335-3ds -b 6 -- -- 4 4- '214#,'-/ - 9q~~ŽI '- . oo• 7 - - 3 5' /6 .2/4 .5"4 -32o3 .2 -- - .! ; #i •"6! ,q-tO 12 -1- I2q 7s,,

Q-k62• 4- - - loc (.,-63364o --- 12 '96Io .36

0 75-- 34,4 1/q -( ed- aa-•sL6" 3-7-? 31- .5-lI ------__ ,q••j71 _ 4( 3AL0odq3

C03-11 3.22go t - - o i , -,-/8 ,qW L - ---- 6 • I -. 412 tJ-73 3oo I - - 0 - -30 & - 7o L 3100-,3 0 /1 -7q W-15 - -0 /0 -,4 30 &J-76 3,10 z -7 -- o /o ZIY -90 4-.72 1 •o0/ / -- - / o 7i 3 o0 -- 2 /0 , 2-S -a8 /0 _-- (0 i-Žq _,80 / -

Page 13 of I k Radiological Survey Results - Survey Location Indicator

Print Name Signature Performed

By: • I • ww

Page i4 of i: Radiological Survey Results - Calculational Sheet

PStatic (sh) Minus Bkgd Location (unsh) pStatic Gross P~ Net 0 CM (cpm) = (Net P3) dpmflOO cm (Cpmn)

~LLi•L~ -- 5 -3ý xV•L 9155 c3 -o -133

Wd q L - 3T__ caa9

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to3 94So C;M - 6 \1 IL1 -30 31

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Instrument ProbetoMoelSNf..~dm Model/SN: Prob______d m Material Bkgd

Page .Liof_(S Radiological Survey Results - Calculational Sheet

Location (uStatic Static (sh) G ssf Minus Bkgd Net f (us)(cpm) Grs (Net 3) dpmflOO0 cm 2

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Instrument Probe Model/SN: :Detector Eff.:

ModeVSN: ______Material Bkgd

Ca~4A 434?1/-621 ______)

Page 16 of ig&- Radiological Survey Results - Calculational Sheet

f3 Static SttcIh rs Minus Bkgd Net P Lcto us)(cpm) =(Net 1) dpmfl 00 cm 2

0 AA lL7.. KIL -7. it. 0 6? C29 q3 99

t_ 6T 3__ I- '0 -

6i) 10 -14, 0774.1q/4__ __ _ 1 m-.. w~•3if53 2-;0 11 5 -7 o

w ~ 0 0~ IX ll -3 3

Instrument Probe Model/SN: Detctor/dpm)

Model/SN: L______

Page n of IS- Building 32 North

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Readinqs: Legend: ,7 = Air Sample Location -X-X-X- = Rope, 00= mRemlh gamma 00 C = mRemih gamma contact (D = Smear Location Boundary, or.Barrier WI-e = Bulk Material Sample 00 3 mRemrh beta 00 IOC= mRem/h beta contact -()- Large Area Section 2: Instrument Used Instrument Model/SN: Cal Due Date: I 2- Z- gYZ2D-i I-Z-tiO3 •3/40// ," 9-- a- 5j,2 k- 6-- al t

Section 3: Review and Approval Area Posted and/or Barricaded: Date and Time: Survey Performed By (Sign): 0 Yes ONo 9 Not Required .3- --46 a 3-06 SIDate and Time: Safety Radiation 3-/-ly-z 9:'5 Radiological Survey Results - Survey Location Indicator Survey Area Information:

Instrument Cal Probe Cal Sa(X [3ScanScan Staticcc Static Due Model/SN Due MDA Model/SN MDA MDA MDA Instrument 3-6 .SL 3 71 8- ,411-6!,t 3a.-f-- 2 11; .0 Data _

Print Name Signature Date

Performed MAAK 13OLA&OJtKcAA.,P,( _____-__ By:

Location 3 Scan a Scan 13 Static S c Static ER Smears 2 (cpm) (cpm) (unsh) (sh) (cpm) (rem/hr) (dpm/100 cm ) (cpm) (cm)

C, -o o.0 .5 V4-,6 , ? I to- Cý2T 3;k- 7.0 -1j4 fl 3 AL la~1f 9~-80 a.( 245 A7fm o C -02 1s 3-30;zo 39 ' -3.1133, /2 -,Q7 S* 354 - 19- 3L 336 .2 /6' A Y e___-47 ?q.0 /,0 -35 . Iq- - L70, -3, e-_7 3oo oi, =k3 1. /o t0.7 7 5g1 6-7 0- 340 o 0 /0 - ' /.x el 300 tOO :32~1r ; /0 a. L/_ dj 3 ;O ±~ a ,o A1s 3- 5 2T5 3 A -0 p.L, U f9 .-. 6 -1If ../.63o0 /z-o 0?1a a '10. /10 . /7- - Z/ 36o 0 3340 -333 /0 2, 0-13 236 Cl 0- a-t- 1L/ I•A 03, 240 ±ý 34 36.-3rJA~ ..- / a go0 33 1 - 1 !o -/

3 ~ ~ z Ai.~ L .. i--" 320 -A

Page a? of - Radiological Survey Results - Calculational Sheet

Location (unsh)tt Static (sh) Gross Minus Bkgd Net 13 2 (cpm) ______= (Net 13) dpm/100 cm 0--/ ,257 tel6 // 3/3 1/ / 3-3 37-" R;4e.-5 -31p e' - ,-/ 3(00 3 3,z ,. ,20o ,A3& . 17 0_-S . .357 336 ,2 ./13 141. .305 e-,-7 .9 o0 3'R5,03 ---3YYL39 ..- -/.9-.l -306 .5" 0,-7 06. 3•o ,339 -/9 .- 7 304 ±- 40" 3S-_ 3

el ~ 10 30 -3 ILLL 1A9 3 / q 12 397~~ q,4 L e_ .333 L L e-.. ,C!'/ .366433 . - 3S#5 -( -5 - ' ---fL13 -.- q-2 p_-/5" 313Z7 - 313 - 6 1J- 9

iLL4 i,9 :6"

Instrument Probe ModeVSN: DctrEff.: Model/SN: ProbMo____N _cpmldpm) Material Bkgd 23-40 15/"371 !..-3'9 1iY8'j a6 8e (53 A,,

Page j of 5 .3"42y AeOZ - .0a-r3 Building 32 North

c-4

C-6I

C-71

c-7c-1

Ceiling Scale: 4m x4m

P '5-aF'g RPP-OP-019 DDO-138 Radiation Protection Survey Report Site: Molycorp / Washington, PA Section 1: Survey Information Date: Ime: Location: Survey Issue Log Number

RWP Number Purpose of Survey: Page of 6 L,4 Cl RWP 0l Routine Survey 3 Unconditional Release .Other P

SurveySurveyTitmee Title:Alpha.3dpml/00cm2 dpm/lO0cm2

L43-74 %L 1 P~~~DA~ ~ GlO;5` q4.6 P 31 _

CAdaton SaeyOfcx PitNae&e•Dt n ie

00 = mRem/h gamma 00 C = mRem/h gamma contact 0) = Smear Location V Air Sample Location -X-X-X- = Rope, 00 13= mRerr/h beta 00 13C= mRem/h beta contact -(])- = Large Area Wipe . = Bulk Material Sample Boundary, or Barrier tSection2: Instrument Used Instrument Model/SN: Cal Due Probe Model/SN: Cal Due Detector Eft.: MDA: Other Date: Date: (cpmldpm) C-5 feZj ,4 r-(-a i0 §- -72i SL'-6- Ac p. ,

SetnR 3 S Area-Iq Posted 2 a rariaed Date a S"" 6 S~-6• o u - ,8 AYN

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Radiological Survey Results - Survey Location Indicator IFW Survey Area Information: AM't VOU

Instrument Cal Probe Cal P'~Scan a Model/SN Due Model/SN Due ScnMDAStic tac MDA MDA MDA Instrument /1 AL! 3 a I A(, q- 4'1.

Print Name _,Sigqature Date Performed ~I~/V9s~____ By:

P Static Smears Location f3Scan a Scan (unsh) Static a Static ER dm10C22 (cpm) (cpm) (Cpm) (sh) (cpm) (ptrem/hr) (p/ 0c (cpm)a

a- fro 0 d25,2 Aji•gk •2 A.q 3A~ MSL I-S 426.3 .26 (n1 -5 0 - 3 (___4 _ .Is; 5L 014I J13 A 1 (j - 3-,5 W.£2 61 f3 3± -59 .3zvLj 1 af3o17 ;w74 13AL -1 w -1 atC 161 .15 1 11± •*± 1 w4~-- 2124~~I- 'AdsI

Si343" M&21 1I 6 1s 1z 2 W - I; Y34 L'775:- -12T ~ -,L,21 (d -13 .3~ w'- .JL 24 'r d~-4

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w52 -. 3*A ~ 324 ~ r -1 3

(1 -01 -d30 - 5?h 11± 321L q 3a' 1 le~f

, 9A- t 39 11 31a2, 3-7f to I

Page .2, of <- Radiological Survey Results - Calculational Sheet

f3Static f3Static (sh) Gos Minus Bkgd Net f Location (unsh) (Cpm) Grs (Net ~) dpmn/lOO cm 2

Li - 1 q'2~ -631 0 Ca A-L 9!T3 -6-- -1- -- 59

- 264 2 44 0

91 Z61 T -. 3-3

411-9~± (a42~ &

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Instrument Prbe Model/SN: Detctor/dpm) Material Bkgd Model/SN: ______m)____ _

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9' DDO-138 Radiation Protection Survey Report Site: Molycorp /Washington. PA Section 1: Survey Inforrmtion Date: 1Trime I Date: e: Location: Survey Issue Log Number •-o • I 6o~to 0(e .32 ___- ______

RWP Number. Purpose of Survey: Page A of 1/4 0 RWP 0 Routine Survey 0 Unconditional Release 1,Other. I Smear Beta Alpha Survey Title: k" ed(,A4 nV S E i Number dpm/100cmz dpm/100cm

Y :3IIs

4 W41%U;$ W144__L

7

10 ______

1412 i

=2

I 25 26 ______fedrs Legend: 00 = mRemih gamma 00 C =mRemi/h gamma contact 1J)=Smear Location 7 =Air Sample Location -'-'X-X- =Rone, 00 (1= mRemih beta 00 jIC =mRemih beta t8contact =Large Area W~ipe =Bulk Matenial Samplet ~ o are Section 2: Instrument Used Instrument Model/SN: Cal Due Probe Model/SN: Cal Due Detector Elf.: MDA: IOther Date: (Pr Date: r(cxn______\N. q) z•"

Section 3: Review and Approval * e PeforedBySig~:Area Posted and/or Barricaded: Date and Time: C CýYesClNo INot Required ~ o adiatio~nSa~fety Officer (Print Nam &Sign): Date and Time: -I

ony 0r

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03 &Z - 61 0 1 Radiological. Survey Results -Survey Location Indicator Survey Area lnfomiation:

Instrument Cal Probe Cal SScan ModpISNue MdeVS Due Scan MDA Static IStatic ModVSNDu MoeVS De ~A DA MDA MDA*.

Instrument 9-,6 3"ýSt0 ~ j - -/~...~...

Data ______- __---

-i Sjtre~ Date Print Name 0 Performed -- ce r1 By: "' - c -a

~ A.Static tai SaicSmears Locaion(cpm) (cpm) (us) (sh) (cprn) (jiremflir) (p~O ii (Cpm) _ __m a_ _

--- q- U- ______

to1 ___ ~ ~ ~ i

- - ZL4L I2

A - - '- 4z• 1~ Z A;______14,1 _ 'IY~ 1

F______1 YO_ z99i;z

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__5_ __2.0_ _ p____ 34 - '36a 1'ý? 7 '90 _ __ _ _ EF L.i _ ___ A2

_ ___7_ .1 ~..1 R45 53/

-3 3 3Ii~aZ -13 4Z... 32j.ý ______

__6ý __7- 3~ 0 .

-__------____3__! ___ A__ 9__0 a3 O

,02 4 Page 3L of 4z

696 -Op- OA2.-O<0 1 Radiological Survey Results - Survey Location Indicator

Survey Area Information: - 3 I,,

Instrument Cal Probe Cal scn P Static Static Model/SN Due Model/SN Due MDA MDA MDA MtA.

Instrument Data - -.

-- Date Print Name - Signature Performed By:

ER (dpm/1Smears 00 cm2) Location J]Scan a= Scan (unStaiic SttStatic a• Static (cpm) (jprem/hr) 0 (cpm)La (cpm) (unsh)(cpm) (m)'(sh) a

re 4,-1.55-5- 3• .5- ,, r -3 4__1 ,/7 " , -FV1J 3o?-4 la

- 416 .31 6 /

-

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Page qt of_-Y- DDO-138 Radiation Protection Survey Report Site: Molycorp I Washington. PA ISection 1: Survey Inforraiml I Date r ime: Location: Survey Issue Log N mber

[ RWP Number. Purpose of Survey: Page of Z N0yd C3 RWP M Routine Survey 0 Unconditional Release 03 Other P Smear T Beta Alpha Survey Title: zlle s-.v e "y 17 Number dpm/1 ai0t, dprrml00cm

1 51ogi 14 J /

_ _2 vE -7 '

16 ______

03 1 m OC 7 iCO 1

[12

",S ֥.,=,a Ave., z20 i

00 ama~eih 0 C= memh gmm ,ontact ' = , ,SmearLoton 7 Ai Sapl Loaio -XXX = Ro Seciose 2 Istrmet S25 Bkqd Readinqs: j 26

I 7', 00 = mRen~h gamma 00 C =mRemr/h gamma contact 0) Smear Location -7 =Air Sample Location -XI-X-X- =Rope. 030 11 = mRenmJh beta 00 I)C = mRemn/h beta contact -1 D- = Large Area Wipe =Bulk Material Sample BonayorEme i Section 2: Inist'u'ment Used

Date: Date: (c~nido:m) T o•" • ,i••- 19K ._

Section 3: Review and Approval Survey Performed By (Sign): Area Posted and/or nicaded: Date and -rime Sadiatio Saey l Namo Yes CINo Not Required 0!73d-4e3A P adiation Saiety Officer (Pnn~t Nam ig .Date and Time:.

__t q-a/ -- z 9~ Radiological Survey Results - Calculational Sheet

f~static Location (us) Sai s)mnsBg f ttc(h rs iu kd Net O13 (us)(cpm) Grs (Net 1) dpm(/100cm (CLML-o 3'? 1 1+i0 B 39 34 (03

U 111 3 - a ~315

W4~- If 0 L. -337 a4rn I na .1o1~ Y-3 Lki -A I I - * a~3 /43 W-A I I -- S. 313 30 -- 3c;2,6 -2-2s? Ave-

--- Vj I I A,9 f7t 60 56 5

r __ __

Inlstrumlent Probe ModeVSN: Dtco Eff.: Mode VSN:" ______

~3~<3.7

Page Z of ;L- Appendix H

Background Assessment Data Molycorp Washington, PA Background Assessment

Material-specific background levels were established by RSI in late 2001 for each type of instrument used for total surface contamination measurements during their final status surveys of buildings 39 and 42. Similar instrumentation was selected for use by MACTEC to take advantage of this previously available information.

Background measurements were collected by RSI on surfaces of similar construction as the buildings at the site and having no possibility of being impacted by site operations. Measurements to establish background for a specific material were collected from multiple locations to provide an estimate of the variability or uncertainty. Background determination was performed using the same instrumentation that was used for final status survey data collection. An average background value was determined for each material surveyed. Background determinations were required and performed for concrete and a class of material designated a generic material.

The number of background measurements obtained per material type:

"• Concrete - minimum of 20 measurements "* Cinderblock - minimum of 20 measurements "* Generic Material - minimum of 10 measurements for each type of material surveyed (i.e., wood, insulation, corrugated steel, etc.)

MACTEC performed material-specific backgrounds for poured concrete with it's four large-area scintillator instruments. Results of the backgrounds matched those of RSI, and gave confidence that other material-specific background information established by RSI was valid for use. The most conservative backgrounds values were selected and used for all background subtracts for direct (static) type surveys performed.

Background measurements for poured concrete were calculated from surveys obtained at the Canton Volunteer Fire Department Station 52-1, Canton Township, PA on their poured concrete surfaces. A mean value for each instrument was calculated. The most conservative background value was selected and used by the Health Physics technicians for all instrument background subtractions.

Included in this appendix are the results of MACTEC's background assessment data. Concrete Background Assessment Molycorp Washington, PA

Poured Concrete Surfaces

Ludlum Model 2360 (145465) with 43-89 (145391)

Beta - Direct Measurements (cpm)

Unshield Shield Net 348 272 76 321 260 61 345 282 63 418 271 147 377 269 108 361 273 88 318 266 52 359 302 57 405 281 124 354 263 91 310 231 79 390 299 91 308 256 52 360 261 99 340 253 87 359 292 67 356 266 90 352 280 72 336 282 54 390 275 115

Mean (cpm) 84

Stand 25.8 Deviation

7

Readings taken at the Canton Volunteer Fire Department Station 52-1, Canton Township, PA on their poured concrete surfaces. Concrete Background Assessment Molycorp Washington, PA

Poured Concrete Surfaces

Ludlum Model 2360 (164680) with 43-89 (118544)

Beta - Direct Measurements (cpm)

Unshield Shield Net 308 255 53 309 264 45 349 239 110 356 254 102 360 281 79 370 245 125 343 242 101 354 243 111 354 256 98 345 252 93 329 254 75 345 232 113 363 232 131 330 241 89 319 236 83 310 230 80 343 262 81 338 255 83 322 260 62 358 263 95

Mean (cpm) 90

Stand 22.3 Deviation

5

Readings taken at the Canton Volunteer Fire Department Station 52-1, Canton Township, PA on their poured concrete surfaces. Concrete Background Assessment Molycorp Washington, PA

Poured Concrete Surfaces

Ludlum Model 2360 (156371) with 43-89 (164832)

Beta - Direct Measurements (cpm)

Unshield Shield Net 349 273 76 329 268 61 368 248 120 326 293 33 338 289 49 289 257 32 324 254 70 345 310 35 353 281 72 369 261 108 418 269 149 364 280 84 377 266 111 317 249 68 350 294 56 366 273 93 343 251 92 368 260 108 362 294 68 356 267 89

Mean (cpm) 79

Stand 30.9 Deviation

11

Readings taken at the Canton Volunteer Fire Department Station 52-1, Canton Township, PA on their poured concrete surfaces. Concrete Background Assessment Molycorp Washington, PA

Poured Concrete Surfaces

Ludlum Model 2224-1 (129463) with 43-89 (169230)

Beta - Direct Measurements (cpm)

Unshield Shield Net 360 301 59 318 267 51 379 287 92 344 269 75 342 290 52 396 266 130 336 273 63 328 272 56 358 314 44 351 256 95 347 272 75 405 276 129 350 284 66 388 299 89 354 292 62 349 257 92 395 277 118 359 302 57 326 287 39 393 270 123

Mean (cpm) 78

Stand 28.8 Deviation

10

Readings taken at the Canton Volunteer Fire Department Station 52-1, Canton Township, PA on their poured concrete surfaces. Appendix I

Instrumentation Data Molycorp Washington, PA Instrumentation Data

This data package contains instrumentation information (background, QC, and source response data forms) for the instruments used during the final status survey of Buildings 25, 29, 32, 33, 35, 36 and the Soil Sample Storage Room. Daily Instrumentation Operational Check Sheet Fe-ee~" Cf ;

Instrument: 2 a2 q- I 12A qt,. Probe: 'v3- Tq• /0 230

Cal Due: ~-4~o Cal Due: 6-0,2

Source ID: Mean +2 a [ Mean -2 a SILid-q 3q_• MeanCount Source Rate: Value: /L -.. Value: 766I

Radiation L I_ ]Sigma Value: Mean +3 a Mean -3 a[ Type: Value: Value: /I7 •-

Background., Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 o W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

odO,l e2..C -I, .29-c -o

*-(-o,,. t-O - -" --- _...,_ _ --

t,.. L l,, 7,-,,, .... . , , 3' 1I

Daily Instrumentation Operational Check Sheet 4fjeý . .:ý4 Instrument: 1, q* Probe: -- ,,

Cal Due: Cal Due: ," c"-O,2

Source ID: Mean Source Count Rate: "7Off- MeanValue: +2o I MeanValue: -2 Y ýj- J Radiation aelil Sigma Value: Mean +3 a Mean-3 a Type: 23 Value: ?Value:

_...... Background, Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

uL4L-L )-7.. - -0 14~ Z2 ...)7Oo -- L 1709 . "" a ~ ilL~ 2 i~± 41f__•.•..., __ ,s,__ A

'( - - .. . . .('. .. .. , , , ,, , , . ., ,, ," ,,, ,,, ,,,,, Instrumentation Operational Check Sheet e Daily

Instrument: g,2 2"-,( -2I I /??'l,' 3 Probe: e13- Yr w- / S 73 3o

Cal Due: ?- 6 - 0.7 . Cal Due:

Source ID: 4 Mean Source Mean +2 a 77 Mean -2 a S3.5- Count Rate: 1L/I'6 ZZ- Value: LL • z' Value: ./'766

Radiation _ Sigma Value: Mean +3 c0 Mean -3 o Type: P q" Value: A ov 6 Value: 17? 1/ I

Background Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 a W/I 3 a LLD SATI Time (min) Counts CPM Time (min) Counts Value Value UNSAT La,2,.{-z VzOD '--- " ------I 1t'%-g ______

-2oO 1'70115D~,?I ______

______,=• cr616 L II~S,• k 2 L L. ______,1 •a.• ___&4 L_ _ I1344 4 f

1-0 - I3t.,34•. 21 .t I ______" " s'

A/.-,,2 t a , _,------, _ _ _

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VI _'6 _ j±4•4-(0-A 2 J24 0• e" 133/1I4-7 (q_ ,,5q_1(.2__-0;e__4 1,21 "" - 02 - ._"_.1_ ..... Zl, _ Daily Instrumentation Operational Check Sheet 10014.

Instrument: .2,224- 1 /P q -(6.3I Probe: .1"3 - '?q r-" /6ct23o

Cal Due: Cal Due: gý- 6 -,o2

Source ID: [;7 !Mean Source Mean +2 a Mean -2 a j 0. Count Rate: 70s, Value: • fJ Value:

Radiation Sigma Value: Mean +3 a Mean :3 a Type: S.3 Value: Value: 6-3

Background Sourfce Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/l 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

• .-z=6-62 II 000J-o/ ,a; .- _ 7V ,___ ."F____ ~

29- 11/ 34 L vI .

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A-l-4 - 2,,f - -L ,, - l _4_a 61 ( _ __

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Instrument: Probe: q3/3- '9f "7-/ a.y...,a

Cal Due: Cal Due:

Source ID: Mean Source Mean +2 a Mean -2 a . . ~-iLq Count Rate: LIZZIE Value: Value: /766 Radiation Sigma Value: Mean +3 a Mean -3 a Type: I ;a Value: Value: -7f1?1

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT 3-7-o0 /7L0710 "-_"-_-- I.... "

"(,a - &.2.e 6 1 lei1, A u"". ' ....

S- - "- .. __ _- -

," i9-/o , 2 JA P.9o. "-- ..."- .5_ _? ---.---.. __:• .. p•--t oS-o.,&4 l t'• •I• ,,, .iC ;3ag ,2?3.aL,5- 1iI__.,000_ 1,,j, , ,,44i' f,

3 A661 1. 11 21. 2 6U 1•_..._, 7 7 ___-_ 3 -(t6, 0, \.esh t4±,$r- - I a, • ___'__ ( . '7. ,_ _ Daily Instrumentation Operational Check Sheet . is 4(

Instrument: .2 t426-3 Probe: *.-.,&"q.,, e

I hal Due: - 0.2 Cal Due:

Source ID: Mean +2 a Mean -2 ay •Meanm CountSource Rate: -7 1"Value: 1 7.5"-1 Value: 6 Mean +3 a Mean -3Vu 6 Radiation Sigma Value: ,:z3 Value: 6364 Type: O( Value: "lt

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT 3- 7-,d'A 7Ai09

-/1 7ad !C.-- .- " /- I" '4•,•s-. ,A-, _,< " j ,J - ... C.3•4. , ,___/ i/..

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_ 00_. ___,, _ ,"7 _ ....- •1 S-Zt.2,.-XS-O - , 1•_....CýC02- e-o " ...... _ ..--iv.,ez•• 1 •," / : ... 4• -' Daily Instrumentation Operational Check Sheet

Instrument: 253go <-"0( ,0 -11;/Z/-T Probe: V.3-?•e':.: % 37,

Cal Due: 7-^ (0 -cst Cal Due:

Source ID: [ ] Mean Source Mean +2Va 9 ,3. Count Rate: . Mea n -2 a Value: t q x, /alue: Radiation 7Tp7 Sigma Value: +3ar Meai Type: ZMean n -3 a 7 2 Value: 7,,2 3 q lalue: Background, Source Check Results 1jW I ime '~ount Gross BKGD Count Gross W/I 2 a WII 3a Time (min) Counts CPM rn* nfa= LLD SAT/ 1 .e.. .a.. . .•~ .... 4u=T!me•....\....- 'min' VOI~Ut• vatue UNSAT I.I '-LY.J% £ 1-I I AL t-• 13. I -4 , -- - - ..... -1J 1. - - 9 ( lers " ,1 0o, ,. ' r=

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t I

I ______± ______I Daily Instrumentation Operational Check Sheet

Instrument: -- 4,3 (4 4t Iqlqq Probe: ' 3-'/ "

Cal Due: C a l Du e : _ _ _-__ _ _

Source ID: Mean Source 7 Mean +2 a F Mean -2 a Count Rate: 6A7 i Value: Value: Radiation Sigma Value: i Mean +3a Mean -3 a SType: Eli" Value: 7/7" Value- Background.. Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) •-.• c.j- ' Counts•' CPM Time (min) Counts Value Value UNSAT 1, 4 .L 1-€ ______,_ ___,,_...

g ...... _ _ _ _, .... _ _ 0 , 1. _ _ _ S ..l . ,K, ,4,,, , - .• ~ ,, ~, , , ~-,, 3 , , j~~i . ....000. _ __Z.., 412-._V7.. .

. , .,,, ,, ,[ ,.,u , , ,,., Daily Instrumentation Operational Check Sheet

Instrument: 23 4 0 " Probe: i'/3--vq I -ý,iý53 q/

Cal Due: Cal Due: ,q 0 0

Source ID: Mean Source Mean +2 a Mean -2 a •q 333" Count Rate: 07// 7 Value:• I 9,5r Value: •2o '

Radiation 7 ~ 7Sigma Value: Mean +3 a 77 Mean -3 a Type: 1 3 q Value: ,7a.3 ' Value: ;'-

Background Sou'rce Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 ar LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT ....-.. ____ ~ A...... L ......

S _U -o0* C 1,- 5 ------P-- .., " " .- ~- ,. 4.. 5- 1A,7 ( l 7 __.___

_ ', ;i- 4., e'4 -2 JI ±i~r, 4' t ...... ±, 4. __-____ ...... _____ S.-2,-c. O6••s :•z" .# • 3 I•. o •l~ -_,,______. ______..a4 _____._", ilpI1I,')q e aL'. 4Lli10- 4000__ g,.-.o~:,. • t ,5" 1i,3_4 ,2./ il •- •V - ,:, ___ 4- *1 f--~ 0t;)A 0_ -7__ -a q: _ _ _ _ ~ ~4 ~ L _____ V ~____ " c2- o6 2 . f .73 . 1 02__. . "j.. Daily Instrumentation Operational Check Sheet ,•bt /•5

Instrument: 1-36 6 " / '6 I Probe: e.3,- 8c /

Cal Due: Cal Due:

+2 Y . Mean -2a Source ID: Mean Source MeanValue: z o /7, Count Rate: I 'l/Iz L.2-7 3 i Value: Radiation 7Sigma Value: Mean +3m Mean -3a . Type: W ~ ~Value:K hL Value: Background Source Check Results Date Time Count Gross BKGD Count Gross W/1 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT •-iM -c• .oz.f, __,__.._...._....t.• '' /,. __-__ ., V ... "•.e__. ~ ~ I ~ j- -7 If__ 47 1

A- ffl-02- ka( .3_-&,.,. i I'&e.3z "______• .... .______L*ý,-. . . L I. $-IZ ,I. " ... 1

3t-•&- .•.- .A C4 Jq, ..•, . " .u•... .. "f •

0~& 0 ______.

44--10 && 11FrŽ 2,.I ___ Pff

4- fj "' 57 '1 1 1 A4 oz .. , ,4 -,,..0- 0'L 0• , _ _,_-1- _- _ -"_ - _ _ ,,,, 1,- ea 1 I ,______._ _ _ .-- _ ...._ _._ _ .,_- DETERMINATION OF SOURCE QC LIMITS

Instrument: •23 60 ID: //Jgq~q Date: 3 g'-9og . Detector -43- 9g ID: /41,6ý39 1 Operating Voltage: 6 75

20 Source-Count Alpha 20 Source-Count Beta Source ID:343-Z .-?3 Source ID: T7. Aq.393-S' 2 Count Gross Cts (x) (x),-(E) [(x)-(Y if Count Gross Cts(x)(A )-(i•.) ((x')]

2 __-" ______.... - ;

7 .:-. ••: ,, 4 - - " " :---- _32, 6 .... 3 .-- £.=...~ " ;¢ -'.-- 8 - 14 " 21'•"--• ¢ 9 __-- __- ___::--- • •2 "'A'/ 10 - . 10 i j j

13 31 Q4 12 ~ a ' 13 2211.. 'tot, 14 -3 "'0 3. 14 ______.V-t1 15 16 ...... 17j~ 17 I 18 3 3:t~W 18 19 .. ___ -._ -, _ _ _ _ 19__ _ _ _ 20

=1r 6144 1 2cr3, /1

Chi-squared Mean I Sigma 7 -l =•x i -. 1-('•)

X2 20(-) I Where: Where: a = standard deviation n = data for indrividual counts I x= mean count I x= each individual measurement n = average of the twenty data points n = number of measurements

Date: -I -O'Z- Daily Instrumentation Operatiohal Check Sheet

Instrument: .7 Probe: " 1 011 1/-,

Cal Due: OQ Cal Due: "--

Source ID: Mean Source Mean +2 a Mean -2 a Count Rate: Value: Value: 120

Radiation 3- Sigma Value: Mean +3,a Mean -3 cr Type: Value: L JValue: q

Background Soutce Check Results Date Time Count Gross BKGD Count Gross W/, 2 ! W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

2,-... 200 -ý -- " I __ -- ,2,

#..--- 4.S•_ .. - - __ _ _ 1 2Ji, ... --- -- "••'"

'•• .• ______--; 1• ., L/ .... '1/,- ,,ie• -o€, ~tL~o~g 61 O&'1 4zýi C.___ A -eux atW1o ___~All,__ S&-., . 4c 1. 1x - - -5ý 'A2l' , 3

.-Ip- 2J.4~-•,,• ,•• U! -q• ,Lt. •2Hc' a -L,. ______Daily Instrumentation Operational Check Sheet 6/53

Instrument: . ?S(()- 1- /--5 93 1 / Probe: /7/3 8--. fj . 4-1 .. 2 A

.Cal Due: ý9 - 1-5' O Cal Due: S".-- cA

Mean -2a So urce ID: SIMean cD/ourceuuIIL CountSource Rate: Mean +2 a w..,_ Value: L ' J Value: Radiation Sigma Value: Mean*+3 a Mean -3 a Type: LI-I' Value: ;>g,9 Value: gd8 I

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 o W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

9. O...... ,. , , . .. -_

z---, - / ?AS-• - __ --- __ • 2,- __ --"_ _,_t--

,= 6,.-c. "___,_ .... 4. _,(_,, -" __...,

_, _- S.. .. /-0--S4-s-o. __ ~t~4___ t~o ~ "- j , ______--"-_-___.Z "

- '•;-. 1 7 , . d...... _._...

±f--~P-•' oI2J? • _-__ t Wt "Q7(•,7 ___ ..

. I Daily Instrumentation Operational Check Sheet

Instrument: Probe: /,'/. - 91 /,•/. Y- So:•

Cal Due: Cal Due: .--_5-6 ;t

Source ID: Mean Source Mean +2 a Mean -2 a S99 •9•5 Count Rate: 2l Value: , / Value: 1 .?03 1 I

Sigma Value: Mean -3 ar Radiation U0, Type: MeanValue: +3 a c2,0 , I Value: L I

Background Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT S...... ' u 2 < -- - " ,

t -vs - • ,

_ _ . . • .-I1o4w •--. 1 ---I _ I 6w4,?3"Z'c, /I7-Z " I--- ~ -v- ZtO V - V ,

5 , ,2_ , . i- - - -2.

3- a 2- eU ~Z- _ _ _ _ 2__0.. ____2_

3 &a_ J-dI&64__4 .5 I 1 1'1--A -,;, e#c. Daily Instrumentation Operational Check Sheet

Instrument: ,.-6 -6 357 / - Probe: ' .- ,

Cal Due: 11 - -- Cal Due: •"S "-6•.

Source ID: ean Source Mean +2 a Mean -2 a Count Rate: Value: 2 Value:

Radiation Sigma Value: I7 Mean +3 c Mean -3 ar Type: 6 Value: 1ý,,2, Value: 0

Background Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 c W/I 3 c LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

$3Z-Z 42Qo - t ~~

____,_,.a• . •" 5• q 1 .. 9,/ ____.... _. ..

3,./,-s . "-i.<.--- 'v--- L - _... - "-_--.._..._ ..

S-,. , -'~ 4L-~-_a, . .'_.. - -1••,. v il 3 . ••~Q.• .•. • " ___.___.__.1(•...... ____/__, __ /•

• . Z,. . ,• . Z L, .•L 7 3.< I ., , - - ...... v , *

k ,€,• <,a,.o _____ " !4•• . ,• r ... . - <," . ' .... _._÷ . Daily Instrumentation Operational Check Sheet

Probe: e,.--q . /;-1/P.-C/4 Instrument: , a2?3 ,60 /6 I m

Cal Due: -~C3 Cal Due:

Mean Source Mean +2 a Me' an -2 •a Source ID: L L Count Rate: "73,1Value: Value: 61'75

Radiation Sigma Value: Mean +3 a Me;an -3 11 6 Type: 117 o Value: Value:

Background Source .Check Results Date Time Count Gross BKGD Count Gross W/l 2 c W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

~.7-cJ,7 a

S--• ' • z/ •Io o . " "- . 2 /,i.__---.. .. ----- _ _ _,, 3- o:-. ;.s , i I. T. L

.?-'''42 . ,,oC) .... i,_____l... i l2 L lf -,•

~~~~~~~~~~~ __ ___"-V &6tA__ ___

, L i o-Z 1210~fi1 61e, 2 5~ .. ____ - ,'___ 4L- ___ . ~~I ,_/ Daily Instrumentation Operational Check Sheet 'eo 1 . 1(3

Instrument: 93-60 , 1" V R Probe: e-1.-p• .. __ "'Mc," q

Cal Due: Cal Due:

Source ID: Mean +2 a Mean -2 a' SMean0qq 3 3," CountSource Rate: 7 q Value: e2,5S35" Value: 0 23,$q

Mean -3 a Radiation Sigma Value: qe/ Mean +3 a Type: I S V 7 Value: .2S-71 Value: ,231S5-

, _Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 y W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT o-1337-•.• 2 7 / 1 Vol so,

-,- 0-6 7.6 -S- . 5,-- t __.__--,.(7___

-, /<6 -•26 1 ------

3- -oZ; .26-7 L7 97 44 / jOz 6L2Al 0 1

-. -41?j -/ C- I &

zlp•5Ž 02, f___1'WKI -4- --- Daily Instrumentation Ope.rational Check Sheet f/3r

Instrum ent: .....# -I ,/4 . O - Probe: - , ... ý /1/¢ý - , ....

Cal Due: 7 ?O Cal Due:

Source ID: Mean S6Urce . . Mean +2 a Mean -2 a Count Rite: 2•J Value: Value: ,"'

Radiation [ ] Sigma Value: I IMean +3ca Mean -3a Type: " J Value: o-45:2 Value: ,g/,3 "

Background Source Check Results Date Time Count Gross BKGD Count Gross W/1 2 C W/l 3 a LLD SAT/ Time (mln) Counts CPM Time (miin) Counts Value Value UNSAT

4 4-0 -4 ;L _;L 4 L e3 ___

r,•6(O

,,-~/.. o.o1. ./7 /s - " -/ ...... _..o _= ,/_ .. _"...... _ _.. _.

-4 ...... Daily Instrumentation Operational Check Sheet 7(

Instrument: o4 A?/(;a Z gc Probe: 4 ?- 11: & -11/1g .6..

Cal Due: Cal Due:

Source ID: Mean Source Mean +2 a V Mean -2a L~Z3LILI Count Rate: L lilli Value: Value: (4 23 Radiation Sigma Value: Ell...lli Mean +3 a 7 Mean -3 a 77 Type: Value: Value: eC41I

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 • W/1 3 • LLD SAT/ Time (min) Counts CPM Time (mln) Counts Value Value UNSAT - . .... -5,- ...... l o s . . ...

-q-.!! 1tlU - -- - - L Ze47 .. .- -Y

q/-, o- 0,. ' - - - ___ - _ / •,., I,- ,'- g•

• .. ~~ ~~......

S...... ,...... ------, , .1ý 11::ý110,z 5o, / Daily Instrumentation Operational Check Sheet

Instrument: z -> S'o - / 4wý / / ? 5-(!:; (ý, Probe: r -;) - /0 & / -Z-8 9 / ?-

Cal Due: Cal Due: e- 6f -4 2.-

Mean Source Source ID: Mean +2 a ] Mean -2 a Count Rate: -5-1/ el 7`eI - Value: 5" , Value: .51"0/0 Radiation Sigma Value: Mean +3 a L2iLI . Type: Mean -3 a Value: LŽZ5"2 Value:

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 • W/l 3 c LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

8 _z ...To ,... - . - 29% 1A, o0634 "14 _.g , .. _7 I- ? 1o5A 3±1I4 qt. (I o-o a ... o " lL.1l6o e3• IiL4 •;~ LLf ,5o-o ...____ I - 72e,,

'_•dz-i- . ) 3-- " --. - ," - -

J _.•_ f ' z V20L) ______... - P3• J Sj• & t,. ... __.._• ... .,_,, V.1 000- - - ' 3. , __ ," .. .

... .. , , ...... ,. 'I 2z,2- Daily Instrumentation Operational Check Sheet

Instrument: 21 03, <-0 - / el 11-215,66 Probe:

Cal Due: 6/7 - 62-- Cal Due:

Source ID: Mean Source Meean +2 a Mean -2 a 7 Count Rate: 7.II" Value: 7 z" Value: L 5J

Radiation Sigma Value: Meaan +3 a Meanu-3 a Type: w Value: Value, Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 o* W/I 3 o LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT q-t,*.. ,o-'•4 •" 4 It ?J2. " .I.-'4e'. 4. c-oza.0 .... i 1 i•L. ,K3 -z-L'. , _2 . ,,,

4 -. 1-o2. /-7... _-,_,T_ _ " _ _......

L ..-[-o-. j'7b5 - - S,,..

14-6 "4 "-a-~- - - ______

£4~ lw-6~L 4~{.. ~ p ,, ,____...._ 'g- , ,-ý , ;2 ) a Daily Instrumentation Operational Check Sheet

I + -7 r? 17 Probe: 4-3-0Io6 -/-- -EtA II IU Ul~r-mnehnf I I•I IL, I- - I '* -. -I

Cal Due: Cal Due:

Mean -2 cr Source ID: Mean Source Mean +2 o i, 3 .. 31,1_2j Count Rate: " -. Value: Value:

Sigma Value: Mean +3 a Mean -3a 660 Radiation Flo) Value: Type: Sigma-Value Value:

Background Source Check Results Date Time Count Gross BKGD Count Gross WI! 2 " W/I 3 o LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

13-11?6-o. 57-' - -794_ 1s

13 10-.'- . -- -P-- 2----- 1M•7 Y

I6 Z ~ "17 ~ -* -±- 12.3~ V___

,. . o - , . ' ...... 3,"( .,,, ......

'•,/-S -= e __ .4-- ... I7. .

r -.•., •, •, e =3"-4 5" __ ...__ _,_..__t 7,"..2 ,.* ... • y-o..•-. /4 0'o- _ .....-- .".- L -. - s- ...... '-• ... • • _-_ _ "__u4 5" _ _ _" I .2.... ._....-3 _.... " .... _ __- Daily Instrumentation Operational Check Sheet

Instrument: on,6- Probe: e 3 -- vo (, --"I /.9-," 1.2

Cal Due: Cal Due:

Mean -2 a Source ID: Mean Source Mean +2 a .s1ý51 91 z Value: " 1,22, Count Rate: 1 4 Value: Radiation Mean +3 a Mean -3 a Type: Sim Vaue Value: Value: 6c 32

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/l 3 7 LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

-'- e-.- . 3- t5 . ..

3-..../"--1" _ - -__- Sd17 3.-Z.z ..- _Y _ , . -a., esS &01 .,_a.,_--- .... N, Daily Instrumentation Operational Check Sheet i-

Instrument: Probe: . ..313-106 /..7-7a, & , Bo,6 - Cal Due: Cal Due:

source ID: Mean Source Mean +2 a Mean -2 a 3_q5Counts:!ý Rate: Value: .. 4, Value: IE Radiation [S7 sigma Value: Mean +3 Mean -3 a Type: 13 Lz Value: 121 9,le Value: Background Source Check Results'. Date Time Count Gross BKGD Count Gross WIl 2 c W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT Z4-1 t -,a. &S2. 572 1li _ Af' , -1.

0- -_ /6f _ __ _ _

.44nk 1.fcI _ cye _ . I I ,a, 0

,. , S..... _ - L_01 I___02- v7A~&&a-14~ f ___ ~A

,Av . 0,,,

N.N Daily Instrumentation Operational Check Sheet

Instrument: 9 -.sl -ý t... /F '6 Probe: 4-3- -o6 At/11266

Cal Due: Cal Due: -- c2

Source ID: Mean Source F • 1 I Mean +2 a Mean -2 c ,, "7"azzqt •IJCount Rate: L J Value:[ Value: L 6 7

Radiation Sigma Value: ;• I Mean +3a Mean -3 a7 Type: Value:[ Jj Value: LiiLJ

SBackground. Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

4-11-o ,2 a6 oý - _I-I "- . . -- . I 5U I-- .. _ _- -, . 4~-11 -02 I140o 1 -7 13G ___ __

Ito_-6, P71_ 07sa Vol_ Daily Instrumentation Operational Check Sheet

Instrument: a S5"o .- I I!Oejl -14Probe: AY3 --/c, fe,/3-364 ,

. Cal Due: w Cal Due: Mean Source 77 Source ID: UIU Mean Source Mean +2 a F . Mean -2 Count Rate: Value: Value: g / Radiation cC Sigma Value: Mean +3 cr Type: Mean -3 Value: Vol Value: 6'/"

. I /

4,,e¢ ,t Daily Instrumentation Operational Check Sheet

Instrument: 2 350 - t l7o 1 4 Probe: .71.3,- o W6 33 t?,6

Cal Due: Cal Due: 7- d-da

Source ID: Mean Source Mean +2 a Mean -2 a Count Rate: Value: 4,%32a Value: e'16a-F Racilation Sigma Value: Mean +3 a Mean -3 a Type: Value: ._. Value: '.'- ;. Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT 2 --2.o. ... ./6 ,. o ...... 3 -"...... •. V- -- .. • ... . • .

* 3,-2e .•o Jz o.. <... ____.._- - \L...... iL • 2...... - .- • .. "06T2 I '- ..... '.. .

- _ 16_ 3t3 1. ,,..

,q, -,$ - l ' , .. .. . - - - -o2. , . ... r.. ,, _ _ _ -. " ' ' -" a mi • .-~ (a o ...... _ _ __- -1 - da . ..- _-15,40 31,-- LE Le v - 44•.-- ....- .. ..-- -- ve 0- '~1coc,'~ ffi 4~ ~NL____ qZ eli... _ "va I _7-

Instrument: S234A"O-- I !X&/ /'71 0 t< Probe:

Cal Due: Cal Due: g, ,, - -- - ,,

ID: .. Mean Source Mean +2 a F 7MeanValue: -2 a 6 7 L Sdurce Sourc3ID: Count Rate: 1,93 Value: 2 Z7

Sigma Value: [ 7 Mean +3 a Mean -3 a ] Radiation Value:. L 6 ii-" Type: Value: L 'o Results BaCkground Source Check W/1 2 a W/I 3 d LLD SAT/ Date Time Count Gross BKGD Count Gross Time :(rn) Counts CPM Time (min) Counts Value Value .UNSAT 7- 7t . £, 7. -,

. '-,.•...... ,-t --o . .o • • ,.: .w-L..... A ~ .. L.'.'.. "?~J • , , f,' , / c...... _ - ...... ZL " :-- .... [."-x'. 1• 1 ....Z.5• • -L" ... "- -, t -2,z s 0

.3- •> -x . S.-• -.-

Instrument: Probe: ... - 16.',3-/6 ý /Jý3-"

Cal Due: Cal Due:

Source ID: Mean Source Mean +2,u Mean -2a F Count Rate: 'LIZ2o] Value: Value: 46 a Mean-3 a Radiation Sigma Value: Mean +3a 7 iii)6"• 41i55 Type: L3IIIJ Value: Value:, Background 'Source Check Results LLD SAT/ Date Time Count Gross BKGD Count Gross W/1t2 a 'W/A3 a Time (min) Counts CPM Time (min) Counts Value Value UNSAT

3 - -d J.A L 14 f

3-l•- •. o7- . _.-,.._

±,. olo-6'• 4 J4/. Z p •l . ,. _....._ ...... - ...... ,l

3.,,•"-•. 4(a,'' 'I 4"4 -'- L ...... Ac, .-_-._•e!- _ A-f,. ,• "A s" .. I(,7Z•c, i - ..... _ ... 4 ..

S,- -- _. - , ., Q_ " .. ] -. _.. Daily Instrumentation Operational Check Sheet

Instrument: 23Th-( %5-35-9 Probe: _--J-37 - 012,za.

Cal Due: ,,,- Mean Soure 7 Cal Due: 4$ - , .

Source ID: 7- -1 Mean Source Mean +2a [ Mean -2 cra Count Rate: ,. Value: 6 Value:,~•~

Radiation Sigma Value: Mean +3,aI Mean -3 a F Type: Value: x,'- Value: -$o.Z0 6

Background_. Source Check Results Date Time Count Gross BKGD Count Gross W1l 2 a W/I 3 a LLD SAT/ Time (mtn) Counts CPM Time (min) Counts- : Value Value _NSAT

L.... K , _, , •

44(6,02,4-W- J2 I.. - ..... ___ '1~ ~ ______- _ I 3ASAq~ "3z~ 4- Daily Instrumentation Operational Check Sheet

Instrument: .23X6~i -1

Cal Due: Cal Due: •- -- 0 •

Source ID: Mean Source Mean +2 a Mean -2 a Count Rate: Value: Value: L.•2- J LIZIZIq ; LIII Radiation Sigma Value: . Type: MeanValue: +3 a Mean -3 a [ LIII w2 Value: Background_. Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 W W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT q i-2 ~ k L ~ L L l v~C. "' ~ ,__...... - L !- LT- "i ______000

L aI Mi S~I AL .-lt• -o? LOO ____ - tL . t '- - - .. ""," t.__ S Daily Instrumentation Operational Check Sheet ZfF ?.

instrument: ?390- I q• S <-- Probe: 4',?'32 4.seL'

'?- L•9-- 6Z Cal Due: 15.- 6 - OAý Cal Due:

Mean Source a Mean -2 a F7 Mean +-2 Value: ,5"/.' Source ID: Count Rate: Value: , Mean -3 a Radiation Sigma Value: Mean +3 a Value: L . 2 L,, Type:. Value: .. '

Background Source Check Results SAT/ Date Time Count Gross BKGD Count Gross W/l 2 a W/1 3 a LLD Time (min) Counts CPM Time (min) Counts Value Value UNSAT '-.22,-o•-. 0i:-".r6!3 , • i •3 ..< ,•" .!-.--- . ' .,.

.. /a I -- -- - i 5tr7 -4

ý Y ~34o c2a~ 2- 1,3144 1______--o- / - -7

4-41-d-, i• --u --- ..

___ 13_ ;L - -~l~1 L4v544 Daily Instrumentation Operational Check Sheet ffF 26 Y

Instrument: - 1ý350-1 -- v",fs-3,rc? Probe: #?_-""3 7 e'1 2s42

Cal Due: Cal Due:

Source ID: 7 Mean Source 7 7 Mean +2 a Mean-2 a Count Rate: 7 Value: Value: "

Radiation Sigma Value: I Mean +3 a Mean -3 a Type: Value: f/6 Value: 17-/

Background Source Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

120 C. ..-. .)-... 3 ,

:/*634 -l- L.l__., . ,/ 7- ,.O 3'b,. -2.--I ..... L 2iA -- "- ""- " -r•

_ - -_ ._ #'-kc•.,..3.- 7Z J2I 7,,"-, 0t..______""______.__..._.--- ,- •z "2 Z.' -,,-- i ._.__.. •

±t"I -0.. !-"/ . . .. __ . ... - - I (•I- ____, __•_, _ -. . _ ,____' r- t .l,'. 6/ 5.6.K -n --- t ... ?,., " ___._.. _--_4 ...... • - - . .. .,.- _____ %'•,i ,______._ ,s Daily Instrumentation Operational Check Sheet ,xr,ýc . A 0 7

Instrument: o?3-' - ' t .. 9S.3,,-q Probe: /.5-37 "769?173

Cal Due: Cal Due:

Source ID: I7 Mean Source Mean +2 a ' Mean -2 a Count Rate: C2 Value: 1?3 Value: 61-"5""

Radiation Sigma Value: Mean +3 a Mean -3 a Type: S Value: I Value:

Background Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 a W/A 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

3 L-• J Z . -- _ .. ------•, •-, 2-a2. . 4 n . ,

3-i .-c,-• o&.S -- I ~ ""- -- "-- .. b-tg •l .$.. I" "±LL. 1 1j." . as _7 a f 14t'-

I&-* CP A o - -''O•I- ' _ ell-- --

-. I- 6-3-Vi-o Lo !?. T- 1 ,? ------. 3- -i&4•5~" z' ~ ? 6 J .. Js'o~j•• . " ll• .,, __ Cf 41 zv

-,A&-______ý ell, __ __ Daily Instrumentation Operational Check Sheet

Probe: #3 -3•37 - "Jg_"•d5 Instrument: cZ3,O- - iI 393.1- ..

Cal Due: Cal Due:

Source ID: Mean +2 a Mean -2 a Count Rate: Value: FeI -cc 7Mean i Source LILZI Value: --. ±Li Radiation Sigma Value: Mean +3 a Mean -3 a Type: ý Value: Value: -1?

Background Source Check Results Date Time Count Gross BKGD Count Gross WII 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) *Counts Value Value UNSAT ...... - . . . . L.. , .. . . . ,-.. .

___7_t_ 172A4

.'1- 1- /06k5' ,s. . .- ., . - ' ,

Ag--o-,27-0 ~ 5ZSZ -

- s.--..- *. .. ( .P /•- Lf- 5 2 -, 2 .. "6 ,- ...... 2s- -O• •/( ,.•_"_0 C• _ ..,- - ...... - .... 1,s, Ludlum Model 19 Micro-Rem Routine Performance and Background Data Form

Instrument ID #: q.S" 6 Cal. Due: ,- 6- o, I SourceID#: C.4 /.3"/ "g/614 Mean Source Value: 1 k Mean plus + 20% Value: Mean plus - 20% Value: /6 7

Meter Scale irnem 50 pRrem 250 pirem 500 p'rem Background Sat/Unsat Date Time 25 Reading (sat/unsat) (sat/unsat) +/-20% value +/-20% value

I•,I/,-yja a 6 1, A3,,/0' -4-6k c7)/•

L~

• k 3-'-t7,~• 'Cla 60 •.e4

___-_A ______434_ A_ 42-

Al -~2-- ?*______

s-o______

64,10-4 1z. 6&r3(0/ Ludlum Model 19 Micro-Rem Routine Performance and Background Data Form

InstrumentlD#: o42 S.2 6 Cal. Due: '*,, Source.DeC.5 13 -1 6/0 Mean Source Value: Mean plus + 20% Value: •?-O p Value: /,67

Meter Scale Time 25 ýtrem 50 grem 250 grem 500 ýtrem Background SatiUnsat Date ...... n sa t) + /- 2 0 % v a l u e + / -2 0 % v al ue _(s a t/ u n s a t ) ( s at / u

&&.. &. _11,0 cc~ (0 AL04

o051 01 _____

32 ______6.____ ~

. - ;_ 43 _...... 1o2, 13. < .- 4-,- t,. ....- o696 .90-0•

13-8-09. 06-"ýLS' 13. ' " Ludlum Model 19 Micro-Rem Routine Performance and Background Data Form

Instrument ID #: v.1Sý2 Cal. Due: - SourcelDl .#:C Mean Source Value: a Mean plus + 20% Value: Mean plus - 20% Value:.

S...... Meter Scale Background Date Time 25 Jtrem 50 gtrem 250 girem 500 gremt Reading Sat/Unsat ,, (sat/unsat) (sat/unsat) +/-20% value +/-20% value

A.t...... I . , ;.

'" J , ' , , ,, _1'

S. . . ., ......

S...... ", "," Ludlum Model 19 Micro-Rem, Routine Performance and Background Data Form

Instrument lD,#: Cal. Due: -- , SoureeID#: ," Mean Source Value: Mean plus + 20% Value: ,. Mean plus - 20% Value: / (•

Meter Scale ...... Background S... Sa Un t Date Time 25 ýirem 50 gremt 250 gremt 500 grem Reading Sat/Unsat (sat/unsat) (sat/unsat) +/-20% value +/-20% value t.5 a~2 ....go . . Jf312

•/.t ,, ,•. •..... Z, ... 2...... •,A Ludlum Model 19 Micro-Rem Routine Performance and Background Data Form

InstrumentD#:ID Cal. Due: SourcelD#: C% 3": Mean Source Value: , q Mean plus + 20% Value: .7,.S- Mean plus - 20% Value: /63

MeterS...... Scale .. Background Sa Un t Date Time 25 ýLrem 50 prem 250 prem 500 pirem ReadingrSat/Unsat (sat/unsat) (sat/unsat) +/-20% value +/-20% value i-A,--- a,;L&6 (4 .... 1;.a "&

3- C4- 061, 1%' , ,,.,

_6__•_o A,6, o A 4+ 3 .74, 6 C7..4, ;L -o /AI'S T44p

L.4840 13

_ _, _ __, _ _ __,_. _/ _'.. _ __._ _ 3..4,4 -

______A_____ 13 ,) Ludlum Model 19 Micro-Rem Routine Performance and Background Data Form

InstrumentID#: /5'9"-7 Cal. Due: S-_6- o; SourceID#: e-5 13"j *- AIfo Mean Source Value: . Mean plus + 20% Value: ,46- Mean plus - 20% Value: 163

Meter Scale Date Time 25 pirem 50 prem 250 prem 500 pgrem Background SatiUnsat Reading (sat/unsat) (sat/unsat) +/-20% value +/-20% value

,p-,x-•; o• /• . A~- 7o-,Oz ______

•,,,e-o~.. •, t /,;, , .

,A. . c,51 ,_ __ .5

,_,...... ;.

3&- ... (;i/ W; Daily Instrumentation Operational Check Sheet orroe. a 3 q % Instrument: C;21 a , Probe:

'/3-1 0 - 4t74/d Cal Due: 6 -/ ! - o4 Cal Du

Source ID: Mean Source' [j Mean +2 ty Mean'2°L Count Rate: Value: 3 q3tfj Value: '.o Radiation TyeVtM Sigma Value: anue+3 •-o..Y. Mean -3.a :Value: Value: Background,. Source Check Results Date Time Count Gross BKGD Count Gross WI1 2 a Time W/I 3 ILD SAT/ (min). Counts CPM Time (min) Counts Value Value UNSAT A4 ( p9 r , ,2 4 tI 6 " L6

, -- 4 d - ý .- . n o n||t In • r , . # .# .. • 't _._ . . .i .. all CnecK Sheet

Instrument: - 2 5 g e Probe: /3 -10

Cal Due: _--______--_ _ _ _ _ Cal Due: 1',-c,-, -.

Source ID: Mean Source Mean +2 a Mean 1931 Count Rate: /. i Value: Value: Radiation Sigma Value: Mean +3 0a Mean-3 Type: C .3 Value: L , Mean-Value: 3 O-O Background. Source Check Date Results Time Count Gross BKGD Count Gross W/I 2 a W/I 3 LLLD SAT/ Time (min) Counts CPM Time (min) Counts It- - -' -•6--• ' Value Value UNSAT "- ••- /_ 4 . _

S-- =d. ° = Daily Instrumentation Operational Check Sheet OtiF.. 3q

Instrument: Probe: e3S--td

Cal Due: Cal Due:

Source ID: Mean Source Mean +2 a Mean -2.a Z .'Count1 Rate: L.-3 E2, Value: I3 91 L... Value: 3 75b

Radiation Sigma Value: 6 Mean +3 a Mean -3 a Type: Value: Value: 3 d3ic

Background Source Check Results Date Time Count Gross BKGD Count Gross W/1 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

3~-M-.og. aS,'_4 f -. •o __ •o. _/" ___ "? •

3-25-02. AI

•/ 2- o1.. c..?4e -,• " • . "fr~ o J• ,. Y 7l .O "_. ._ .. _-...... _ _

02 &o-o-6~ _:79

,:,f a.....Y - . 0.. R. I . 1 - 1 3,'9 ,' -,

______6 Ult1 __ 66 -7o __1 S 6,60 66 __ 4 __ <4L7 2•,

1 6 (p•,0._ -- 1-•6, _ .. ' 3 £{•t~-O8 o I I"_V 1-t,., .00z J3

144- -os. v w~_ _ _ _ LfiI______Daily Instrumentation Operational Check Sheet

Instrument: Probe: Vs-- . ,

Cal Due: Cal Due:

Mean -2a•a Source ID: 7 Mean Source Mean +2 a Count Rate: Value: /9V• Value: LL ,LJ

Sigma Value: Mean +3 (a Mean -3 a Radiation Value: ,:€a' Type: .31 Value:

Background Source Check Results LLD SAT/ Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 c Time (min) Counts CPM Time (min) Counts Value Value UNSAT

3-01-n J 5,6 ~ J1 f A~jji'V___

t, •,.€,f"6,•-,•. ŽL.. ± _,_ P,-1•,,/,". X, Cfok .A.,1 J•, 3 3 -3..4,. ,

3.#.- z oe -O . ...A ŽL .. * _.___ _ ,____ " '5"..-e •,,.... ~b,-ý6-125 1______

•4..f-oZ •• ••• un ±3,I,• - __ , 75" "3 ,,v•"I' ______6 LC . ~L__Lk5L

44-t4-o 2. o_ __ _ _

.6. ow_, f.. • J ... / .... '" _ _, _ _ Daily Instrumentation Operational Check Sheet ,3.,-,.

- (?Z,6 Instrument: q 0 2g Probe:

Cal Due: F7 Mean Source 7] Cal Due: Mean +2 a Source ID: Iq 916" " ~MeanValue: -2aF7 t 3 37 I MeanCount Source Rate: 114( Value: Liii ,Mean -3 a 7 7 Sigma :,Mean +3 a I, Z" Radiation Value: Value: Value: I Type: 31 Results Background ______Source Check 3 a LLD SAT/ Date Time Count Gross BKGD Count Gross W/ 2 a Wi1 Time (mrin) Counts CPM Time (min) Counts Value Value UNSAT

~ ~ .g. ~ - Ji,,,A 2 -.. - • L..,

- - ,i ...... , ", 5z<•- a• .e: no •, -•...... - l'. .... J {.1• - i

-'"... .i.. ___ i, -• -..... ±•4 z 1' ... 3.-•-o,-= 503, -• .-,,•.. - ... . ',...... s,13 • ,,,, • .... o _• ., ...... ,./...... 4"-" __!S•... .,3- . .-.=.: .. O i.O __...... - ___g . LLM,?, 7-.! ..... -•...... lo.to . . . • l 4•v l . ._ , . . -, ...... • ...... _, , ...... , / ,_...... /i_ f( . i- 7..<, '• ..• • o . ( . ..--Oe.-.j,< . 6 'o ..... , • + ... • l~ . . .. '"- •3 -Yr - L .e • ".... .j } , q .I ....Ji,,.. _ _ • .. .. Daily Instrumentation Operational Check Sheet

Probe: 4.3-00 Instrument 9" Cal Due: Cal Due: Mean +2 a Mean -2 a7 Source ID: F 7 Mean SourceE1 Value: Value: , 7

, , I, I

0 DETERMINATION OF SOURCE QC LIMITS

Instrument: I;? qg q ID: f t•5",'6 'S Date: o?- o<3,2- Detector: - 3-10 ID: 14 1111 .:. Operating Voltage: 1o•,4"

20 Source-Count: Alpha 20 Source-Count: Beta Source ID: " 3qI3" Source ID: A qq Count Gross Cts (x)q (x)-(.) [(xq)-(3ý )f Count Gross Cts (xi) (.)-(4) y(() 1(

~-0 4 • • ,j" ?•" 5 0• -34'1 IL-L

.813 A 14 15 63 16 -••fi / 1217m • • 19 •- -• 15 • • -- 2 20 tie)

18 ' 0-7

10 q356-]) 19 •• • -. gr"

I Chi-squared 14• P., x"=15 , x= Mean count iWhere: / data4= for individual ounts

x1 each individual measurement n = average of the twenty data points n = number of measurements 2Alpha Values i: Beta Values Imean +2 a= f/•t'.f Imean -2a .3.3"/ ~mean +3a•= ',"05",,•" jmean -2c 375"0 1mean+3o= :.t• , imean-3o= /3o mrean+2a= 3gqgl Imean-3a= 3•'9'

Reviewed: Date: flo_ Daily Instrumentation Operational Check Sheet

Instrument: 0,2 _ 2_q_ ~ ,2. Probe: /03-/o Cal Due: Cal Due: 02-6-os

Source ID: Mean Source q -3,_ Count Rate: ?'63 Mean+2a Mean -2o I Value: [ 7 2. Value: la.,"c Radiation Sigma Value: Mean +3 a Type: Mean -3 cr Value: -x?,2•45J Value: L.7 -K9L Background. T__ Source Check Date linme Count Gross BKGD Count Gross WAI 2 o W/I 3 a LLD SAT/ Time (mmn) Counts CPM Counts Value ,, ,,, ,, ,, T!me_ _ (mIn)• . .. Value UNSAT 11 % A I C '0 -I

'&a-o2. ______I ______I -1----- I - I ______I 1-*

I ______- r-t-t I i-I------I I. I 4 I T I 4-I------l 1. 1______1

t I-.I-----. I t-l---.-----I ______I______

t I- I *I.* t I______I - ______I I I ______Daily Instrumentation Operational Check Sheet

Instrument: A•2IS ;z 0 Probe: 413.-1o "w I-•(&•11l

Cal Due: =2-" Cal Due:

Source ID: Mean Source Mean +2 a Mea Count Rate: /ago Value: Z , j Mea talue: fla/6 Radiation Sigma Value: [ Mean +3, ]Meai Type: L[j Value: C/ n -3ac (alue: L• q r

Background, Source Check Date Time Count Gross Results BKGD Count Gross W/I 2 a W/l 3 a Time (mln) LLD Counts CPM Time (min) Counts Value SAT/ Value UNSAT

rj.

...... Daily Instrumentation Operational Check Sheet

Instrument:. ,% 11ý ,a,, Ov. Probe: '-'/o

Cal Due: Cal Due:

Source ID: Mean Source . 7 Mean +2lm Mean -24a Count Rate: Value: 0?j2 Value: 2-rv

Radiation - 1Sigma Value: Mean +3 a 7 Mean -3 a Type: "v Value: L2•/ jj Value: L iI

Background Sou'rce Check Results Date Time Count Gross BKGD Count Gross W/I 2 a W/I 3 a LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

~~~ ______~ c3Zor r. 7~~ 34 .3. -o. e;t.•.to 10o A• RA= 0 .-/5' .• (,. ,e 3"

IS d4557, - ass t _Sd

$ -: .• ... ,1,A,. L..Io *7 ,2--

4 - &6 - r -1I 4

e4tey -0 9- ___5ý 110 AC~.-1 S- 41_ _ Alt ______

q_ -_el __0,1 __ ffi{ý __4__ __ (-__m 17_

-4(tc- ejtsi 46 _ _ _ I ______-4., Daily-Instrumentation Operational Check Sheet

Probe: 4--/o j!strument: a- t Lo- 1 f - -

Cal Due: ,2- e-o5 Cal Due:

-2 a Source ID: Mean +2oa I Mean Value: Value: 1136 L L 2-37 .CountMean SourceRate: /o1 Mean -3 ca Radiation Sigma Value: Mean +3 a 7 I Type: c

Background Source Check Results SAT/ Date Time Count Gross BKGD Count Gross W/I 2 a W/l 3 a LLD Time (min) Counts CPM Time (min) Counts Value Value UNSAT

_ •-•l~/ • __, _,_ _4,5-" - 6__, __

-44 40_ -1 1 SI4 -- foI. _. ._____ --o "~ i ____ 60 iL ., 3 -. 111_.3 ± .: .

- ' •-3-,:• ,1 ,,.- ...... ___. _ _4/j. ~ •••. 64 - . 6c 2f t ,-' q-• • -••-• e(, "/, •" • 1• *" 1,4o ' J-•...... 1, .__. _• __ o • "L.L. iti;

4-eh -00 -,1, -0___ 7 e4. toL~O-OI . 1fJ- __ __ 1140, 0e ______it'0t Daily Instrumentation Operational Check Sheet

Instrument: Probe: £?/3-/cI.

Cal Due: Cal Due:

Source ID: Mean Source Mean +2 a Mean -2 ca H2 5 Sq, SI" Count Rate: a 6,3 d Value: ,I-' Value: ,25•'V

Radiation - Sigma Value: Mean +3 a Mean -3 a Type: Value: Value:

Background Source Check Results Date Time Count Gross BKGD Count Gross W/l 2 a W/t 3 ar LLD SAT/ Time (min) Counts CPM Time (min) Counts Value Value UNSAT

.2-. 7 -,a __ 3 -!r±L- ,A-='.i•. .... _ •1 qŽoL/4 - ,A,-' •4...

,4-;•,4, ,• • ...... •5 ' A±L ,,,; , ' - , ",.• .

5 46 - f>4. 4 - -q ll3 -q______1'

c)000 V ~ -3414 S -(v-a, &•.0-o C J. ( 34r 1 __ys )011-1 41 ~ -lidf ~

•,-12•' ,.o e.e• • -' .• .. .o ... . ' ___...... ,___ ._ _" ,"' T§7 :3 Operational Check Sheet* ee4( Daily Instrumentation , :3

Probe: . -it q5", Instrument: ; c. /. 5,. a ,.

_ _ Cal Due: Cal Due: _'_-__"_

SMeanSource F Mean +2 y - Mean alue:-2 (•[. . . Count Rate: L7•J Value: /37/ V Mean Sigma Value: ... Mean +3 a alue:-,| /0 9• Radiation . . /• 46 V, Type: Value: Results Background Source Check LLD SAT/ Gross W/ 2 a W11 3 a UNSAT Date Time Count Gross BKGD Count Time (mt) CoUnts CPM Time (min) Counts Value Value __•• _.._•L• .._..•Cou--n-.t • •• ...

L o -----4 • . _.•_ _ _ _ (- - -- DETERMINATION OF SOURCE QC UMITS

Instrument: ID: t-G.72. <1 a Date: ?2-O2,2• 4

Detector '13-1 . ID: 1-56 5"T(I , Operating Voltage: ?.5o,

20 Source-Count Alpha 20 Source-Count: Beta Source 1D: 7T ,,?3 .3-3i Source ID: 7I q 9g 3'q3 5 Count Gross Cts (x) (-(i) [(x)-(i )J Count GrossCts (xj) 4YxjH)Y (')(•) 2 1 :+4: 3 B 1 -- 2 :•• • -tL I•t . . 2 _-______•; "'_____ Z•

5 -4+:+,ý •• .. 676g+ 7 4,.-3 TMi 8 -.:,6 .7+:.. -4 J ¶6 1366

. 12 ,.-. .f l .• .-: -, a, 12 ;-q

15 " g-s--- .-. :: - • u£/. •" 16 '-L

1 '26 ,, I a^= 4 q

S Mean Sigma Chi-squared

iWhere: S•=standard deviato Where: S Y=mean count n = data for individual counts xi = each individual measurement n =average of the twenty data points Sn = number of measurements Beta Values

Jmean +3 = ~,,2_, '- jmean -2ao= ,2-Vo fmeanxa= +2o•= =212" • lmean -3a(• 46,'i5"

Date: "5 - /fV"-0 Z_