No Yes 0.02 % of CWSs 91 2000 GROSS BETA YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 Not Vulnerable Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 0 0 0 Systems 50,996 50,996 50,996 50,996 50,996 50,996 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 Vulnerable SW > 100,000 Sites per System 9.2 9.2 9.2 9.2 9.2 9.2 Samples per Site 0 0 0 0 0 0 Systems 11 11 11 11 11 11 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 60 153 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ o known contam., GB < 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 6 6 6 Systems 2,114 2,114 2,114 2,114 2,114 2,114 Total Samples 0 0 0 21182.28 21182.28 21182.28 Cost per Sample 65.5 65.5 65.5 65.5 65.5 65.5 Total Cost 0 0 0 1387439 1387439 1387439 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 1127999 1059114 991028.1 Vulnerable w/ o known contam., GB > 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 20 20 20 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 69.5 69.5 69.5 69.5 69.5 69.5 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ known contam. Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 10 10 10 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 91.7 91.7 91.7 91.7 91.7 91.7 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 92 2000 GROSS BETA YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 Not Vulnerable Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 0 0 0 Systems 50,996 50,996 50,996 50,996 50,996 50,996 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 Vulnerable SW > 100,000 Sites per System 9.2 9.2 9.2 9.2 9.2 9.2 Samples per Site 0 0 0 0 0 0 Systems 11 11 11 11 11 11 Total Samples 0 0 0 0 0 0 Cost per Sample 60 153 45 45 60 153 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ o known contam., GB < 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 6 6 6 6 6 6 Systems 2,114 2,114 2,114 2,114 2,114 2,114 Total Samples 21182.28 21182.28 21182.28 21182.28 21182.28 21182.28 Cost per Sample 65.5 65.5 65.5 65.5 65.5 65.5 Total Cost 1387439 1387439 1387439 1387439 1387439 1387439 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 924959.6 861763.6 806650.8 754043.1 704283.9 660685.4 Vulnerable w/ o known contam., GB > 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 20 20 20 20 20 20 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 69.5 69.5 69.5 69.5 69.5 69.5 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ known contam. Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 10 10 10 10 10 10 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 91.7 91.7 91.7 91.7 91.7 91.7 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 93 2000 GROSS BETA YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 Not Vulnerable Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 0 0 0 Systems 50,996 50,996 50,996 50,996 50,996 50,996 Total Samples 0 0 0 0 0 0 Cost per Sample 45 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 Vulnerable SW > 100,000 Sites per System 9.2 9.2 9.2 9.2 9.2 9.2 Samples per Site 0 0 0 0 0 0 Systems 11 11 11 11 11 11 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 60 153 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ o known contam., GB < 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 6 6 6 6 6 6 Systems 2,114 2,114 2,114 2,114 2,114 2,114 Total Samples 21182.28 21182.28 21182.28 21182.28 21182.28 21182.28 Cost per Sample 65.5 65.5 65.5 65.5 65.5 65.5 Total Cost 1387439 1387439 1387439 1387439 1387439 1387439 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 616639.7 575701 537767.2 502695.4 470318.4 439063.1 Vulnerable w/ o known contam., GB > 4 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 20 20 20 20 20 20 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 69.5 69.5 69.5 69.5 69.5 69.5 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 Vulnerable w/ known contam. Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Samples per Site 10 10 10 10 10 10 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 91.7 91.7 91.7 91.7 91.7 91.7 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 94 2000 GROSS BETA YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 Not Vulnerable Sites per System 1.67 1.67 1.67 1.67 1.67 Samples per Site 0 0 0 0 0 Systems 50,996 50,996 50,996 50,996 50,996 Total Samples 0 0 0 0 0 Cost per Sample 45 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 Vulnerable SW > 100,000 Sites per System 9.2 9.2 9.2 9.2 9.2 Samples per Site 0 0 0 0 0 Systems 11 11 11 11 11 Total Samples 0 0 0 0 0 Cost per Sample 60 153 45 45 60 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 Vulnerable w/ o known contam., GB < 4 Sites per System 1.67 1.67 1.67 1.67 1.67 Samples per Site 6 6 6 6 6 Systems 2,114 2,114 2,114 2,114 2,114 Total Samples 21182.28 21182.28 21182.28 21182.28 21182.28 Cost per Sample 65.5 65.5 65.5 65.5 65.5 Total Cost 1387439 1387439 1387439 1387439 1387439 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 410485 383270.5 358511.5 335130.3 313191.7 Vulnerable w/ o known contam., GB > 4 Sites per System 1.67 1.67 1.67 1.67 1.67 Samples per Site 20 20 20 20 20 Systems 0 0 0 0 0 Total Samples 0 0 0 0 0 Cost per Sample 69.5 69.5 69.5 69.5 69.5 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 Vulnerable w/ known contam. Sites per System 1.67 1.67 1.67 1.67 1.67 Samples per Site 10 10 10 10 10 Systems 0 0 0 0 0 Total Samples 0 0 0 0 0 Cost per Sample 91.7 91.7 91.7 91.7 91.7 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 95 2000 GROSS BETA TOTAL TOTAL Not Vulnerable Sites per System Samples per Site Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 Vulnerable SW > 100,000 Sites per System Samples per Site Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 Vulnerable w/ o known contam., GB < 4 Sites per System Samples per Site Systems Total Samples 423645.6 Cost per Sample Total Cost Discount Rate Present Value Cost 12833301.7 Vulnerable w/ o known contam., GB > 4 Sites per System Samples per Site Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 Vulnerable w/ known contam. Sites per System Samples per Site Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 96 2000 GROSS BETA TOTAL TOTAL TOTAL PRESENT VALUE 12833301.7 YEARS COVERED 23 INTEREST RATE 7% ANNUALIZED PRESENT VALUE ($ 1,138,492.58)

TOTAL SAMPLES 423645.6 BURDEN PER SAMPLE ( HRS.) 0.5 TOTAL BURDEN ( HRS.) 211822.8 YEARS COVERED 23 AVERAGE ANNUAL BURDEN ( HRS.) 9209.686957 THREE YEAR TOTAL COST 0 THREE YEAR ANNUALIZED COST $ 0.00 97 BASELINE COMBINED RADIUMS 98 Based on Gross Alpha Screen  is the GA > 5 pCi/ L or < 5 pCi/ L ? Gross Alpha > 5. Determine radium 226. Is it > 3 or < or = to 3 pCi/ L?

Combined Radiums  1976 Baseline Monitoring Gross Alpha < or = 5 pCi/ L

Substitute GA value for combined radiums  in compliance for combined radiums  Go to 1 every 4 years for GA* Radium 226 > 3 pCi/ L. Determine radium 228.

Radium 226 < or = 3 pCi/ L. In compliance for combined radiums.

Monitor 1 every 4 years for Radium 226 Combined radium 226 +

228 < or = 5 pCi/ L Monitor 1 every 4 yrs.

for Radium 226/ 228 Combined radium 226 + 228 > 5 p Ci/ L  Out of compliance 1 per yr. for Radium 226/ 228 97.1 % of Large CWSs 90.6 % of Small CWSs 0 % of CWSs * Gross Alpha not counted under this scenario;

it is counted in Gross Alpha scenario 1.8 % of Large CWSs 2.6 % of Small CWSs 1.1 % of Large CWSs 0.9 % of Small CWSs 99 100 BASELINE COMBINED RADIUMS ( CR) YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA< 5 SM Samples per System 0 0 0 0 0 0 Systems 30,491 30,491 30,491 30,491 30,491 30,491 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA< 5 LG Samples per System 0 0 0 0 0 0 Systems 20,981 20,981 20,981 20,981 20,981 20,981 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226< 3 SM Samples per System 0 0 0 1 0 0 Systems 565 565 565 565 565 565 Total Samples 0 0 0 565 0 0 Cost per Sample 90 90 90 90 90 90 Total Cost 0 0 0 50850 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 41341.46 0 0 GA> 5 AND RA226< 3 LG Samples per System 0 0 0 1 0 0 Systems 565 565 565 565 565 565 Total Samples 0 0 0 565 0 0 Cost per Sample 90 90 90 90 90 90 Total Cost 0 0 0 50850 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 41341.46 0 0 GA> 5 AND RA226> 3 AND CR< 5 SM Samples per System 0 0 0 2 0 0 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 101 BASELINE COMBINED RADIUMS ( CR) YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA< 5 SM Samples per System 0 0 0 0 0 0 Systems 30,491 30,491 30,491 30,491 30,491 30,491 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 GA< 5 LG Samples per System 0 0 0 0 0 0 Systems 20,981 20,981 20,981 20,981 20,981 20,981 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226< 3 SM Samples per System 0 1 0 0 0 1 Systems 565 565 565 565 565 565 Total Samples 0 565 0 0 0 565 Cost per Sample 90 90 90 90 90 90 Total Cost 0 50850 0 0 0 50850 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 31583.85 0 0 024214.29 GA> 5 AND RA226< 3 LG Samples per System 0 1 0 0 0 1 Systems 565 565 565 565 565 565 Total Samples 0 565 0 0 0 565 Cost per Sample 90 90 90 90 90 90 Total Cost 0 50850 0 0 0 50850 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 31583.85 0 0 024214.29 GA> 5 AND RA226> 3 AND CR< 5 SM Samples per System 0 2 0 0 0 2 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 102 BASELINE COMBINED RADIUMS ( CR) YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA< 5 SM Samples per System 0 0 0 0 0 0 Systems 30,491 30,491 30,491 30,491 30,491 30,491 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 GA< 5 LG Samples per System 0 0 0 0 0 0 Systems 20,981 20,981 20,981 20,981 20,981 20,981 Total Samples 0 0 0 0 0 0 Cost per Sample 45 45 45 45 45 45 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226< 3 SM Samples per System 0 0 0 1 0 0 Systems 565 565 565 565 565 565 Total Samples 0 0 0 565 0 0 Cost per Sample 90 90 90 90 90 90 Total Cost 0 0 0 50850 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 18423.91 0 0 GA> 5 AND RA226< 3 LG Samples per System 0 0 0 1 0 0 Systems 565 565 565 565 565 565 Total Samples 0 0 0 565 0 0 Cost per Sample 90 90 90 90 90 90 Total Cost 0 0 0 50850 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 18423.91 0 0 GA> 5 AND RA226> 3 AND CR< 5 SM Samples per System 0 0 0 2 0 0 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 103 BASELINE COMBINED RADIUMS ( CR) YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA< 5 SM Samples per System 0 0 0 0 0 Systems 30,491 30,491 30,491 30,491 30,491 Total Samples 0 0 0 0 0 Cost per Sample 45 45 45 45 45 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA< 5 LG Samples per System 0 0 0 0 0 Systems 20,981 20,981 20,981 20,981 20,981 Total Samples 0 0 0 0 0 Cost per Sample 45 45 45 45 45 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA> 5 AND RA226< 3 SM Samples per System 0 1 0 0 0 Systems 565 565 565 565 565 Total Samples 0 565 0 0 0 Cost per Sample 90 90 90 90 90 Total Cost 0 50850 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 14046.96 0 0 0 GA> 5 AND RA226< 3 LG Samples per System 0 1 0 0 0 Systems 565 565 565 565 565 Total Samples 0 565 0 0 0 Cost per Sample 90 90 90 90 90 Total Cost 0 50850 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 14046.96 0 0 0 GA> 5 AND RA226> 3 AND CR< 5 SM Samples per System 0 2 0 0 0 Systems 0 0 0 0 0 Total Samples 0 0 0 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 104 BASELINE COMBINED RADIUMS ( CR) TOTAL TOTAL GA< 5 SM Samples per System Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 GA< 5 LG Samples per System Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 GA> 5 AND RA226< 3 SM Samples per System Systems Total Samples 2825 Cost per Sample Total Cost Discount Rate Present Value Cost 129610.4744 GA> 5 AND RA226< 3 LG Samples per System Systems Total Samples 2825 Cost per Sample Total Cost Discount Rate Present Value Cost 129610.4744 GA> 5 AND RA226> 3 AND CR< 5 SM Samples per System Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 105 BASELINE COMBINED RADIUMS ( CR) YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA> 5 AND RA226> 3 AND CR< 5 LG Samples per System 0 0 0 2 0 0 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226> 3 AND CR> 5 SM Samples per System 2 2 2 2 2 2 Systems 345 345 345 345 345 345 Total Samples 690 690 690 690 690 690 Cost per Sample 100 100 100 100 100 100 Total Cost 69000 69000 69000 69000 69000 69000 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 69000 64485.98 60526.32 56097.56 52671.76 49285.71 GA> 5 AND RA226> 3 AND CR> 5 LG Samples per System 2 2 2 2 2 2 Systems 195 195 195 195 195 195 Total Samples 390 390 390 390 390 390 Cost per Sample 100 100 100 100 100 100 Total Cost 39000 39000 39000 39000 39000 39000 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 39000 36448.6 34210.53 31707.32 29770.99 27857.14 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COSTS THREE YEAR ANNUALIZED COSTS 106 BASELINE COMBINED RADIUMS ( CR) YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA> 5 AND RA226> 3 AND CR< 5 LG Samples per System 0 2 0 0 0 2 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226> 3 AND CR> 5 SM Samples per System 2 2 2 2 2 2 Systems 345 345 345 345 345 345 Total Samples 690 690 690 690 690 690 Cost per Sample 100 100 100 100 100 100 Total Cost 69000 69000 69000 69000 69000 69000 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 46000 42857.14 40116.28 37500 35025.38 32857.14 GA> 5 AND RA226> 3 AND CR> 5 LG Samples per System 2 2 2 2 2 2 Systems 195 195 195 195 195 195 Total Samples 390 390 390 390 390 390 Cost per Sample 100 100 100 100 100 100 Total Cost 39000 39000 39000 39000 39000 39000 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 26000 24223.6 22674.42 21195.65 19796.95 18571.43 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COSTS THREE YEAR ANNUALIZED COSTS 107 BASELINE COMBINED RADIUMS ( CR) YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA> 5 AND RA226> 3 AND CR< 5 LG Samples per System 0 0 0 2 0 0 Systems 0 0 0 0 0 0 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 0 0 GA> 5 AND RA226> 3 AND CR> 5 SM Samples per System 2 2 2 2 2 2 Systems 345 345 345 345 345 345 Total Samples 690 690 690 690 690 690 Cost per Sample 100 100 100 100 100 100 Total Cost 69000 69000 69000 69000 69000 69000 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 30666.67 28630.71 26744.19 25000 23389.83 21835.44 GA> 5 AND RA226> 3 AND CR> 5 LG Samples per System 2 2 2 2 2 2 Systems 195 195 195 195 195 195 Total Samples 390 390 390 390 390 390 Cost per Sample 100 100 100 100 100 100 Total Cost 39000 39000 39000 39000 39000 39000 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 17333.33 16182.57 15116.28 14130.43 13220.34 12341.77 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COSTS THREE YEAR ANNUALIZED COSTS 108 BASELINE COMBINED RADIUMS ( CR) YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA> 5 AND RA226> 3 AND CR< 5 LG Samples per System 0 2 0 0 0 Systems 0 0 0 0 0 Total Samples 0 0 0 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA> 5 AND RA226> 3 AND CR> 5 SM Samples per System 2 2 2 2 2 Systems 345 345 345 345 345 Total Samples 690 690 690 690 690 Cost per Sample 100 100 100 100 100 Total Cost 69000 69000 69000 69000 69000 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 20414.2 19060.77 17829.46 16666.67 15575.62 GA> 5 AND RA226> 3 AND CR> 5 LG Samples per System 2 2 2 2 2 Systems 195 195 195 195 195 Total Samples 390 390 390 390 390 Cost per Sample 100 100 100 100 100 Total Cost 39000 39000 39000 39000 39000 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 11538.46 10773.48 10077.52 9420.29 8803.612 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COSTS THREE YEAR ANNUALIZED COSTS 109 BASELINE COMBINED RADIUMS ( CR) TOTAL TOTAL GA> 5 AND RA226> 3 AND CR< 5 LG Samples per System Systems Total Samples 0 Cost per Sample Total Cost Discount Rate Present Value Cost 0 GA> 5 AND RA226> 3 AND CR> 5 SM Samples per System Systems Total Samples 15870 Cost per Sample Total Cost Discount Rate Present Value Cost 832236.8247 GA> 5 AND RA226> 3 AND CR> 5 LG Samples per System Systems Total Samples 8970 Cost per Sample Total Cost Discount Rate Present Value Cost 470394.727 TOTAL PRESENT VALUE 1091457.774 YEARS COVERED 23 INTEREST RATE 7% ANNUALIZED PRESENT VALUE ($ 96,827.50)

TOTAL SAMPLES 30490 BURDEN PER SAMPLE ( HRS.) 0.5 TOTAL BURDEN ( HRS.) 15245 YEARS COVERED 23 AVERAGE ANNUAL BURDEN ( HRS.) 662.826087 THREE YEAR TOTAL COSTS 194012.2971 THREE YEAR ANNUALIZED COSTS ($ 73,928.71) 110 2000 COMBINED RADIUMS 111 Based on Gross Alpha Screen  is the GA > 5 pCi/ L or < 5 pCi/ L ? ** These systems have GA > 5 . Under 1976 rules, would have checked for radium 226, so they should have the data to GF. Some of these would have possibly have 226 > 3 and checked for 228. For simplicity, assume everyone checked for 228 and will GF their data.

Then they can combine their GF data to determine monitoring schedule, ie., reduced monitoring or out of compliance. Analysis cost would be for both radium 226 and 228 and is a total of $ 200.

Combined Radiums  2000 Monitoring Scenario 2a ( Initial monitoring in Yrs. 4 7, SMF 3 yr. cycles thereafter) Approx. 3 % of CWSs will have radium 228 data to GF and also will have radium 226 data to GF**

Approx. 97 % of CWSs will not have radium 228 data  so will have to monitor for it * Rad 226 analysis = $ 90 Rad 228 analysis = $ 110 < 5 pCi/ L > 5 pCi/ L For CWSs < 2.5 pCi/ L of 228, collect 2 Q, or if >

2.5 collect 4Q, then after adding to GA to get CR,

go to reduced monitoring. CR < 1 so 1 in 9 yrs CR > 1 but <

2.5 pCi/ L so 1 in 6 yrs CR > 2.5 but < 5 so 1 in 3 yrs CR > 5 Out of compliance.

Assume 4 Q first year then 1 per yr.

* These systems had GA < 5. Under 1976 rules, would not have checked for radium 226.

Since GA is less than 5, they can sub this for radium 226 value when they add for combined radiums. Only analysis cost is for radium 228  $ 110. For those out of compliance, assume they will go back and check their radium 226 so $ 200 total for both.

radium 228 < 2.5 radium 228 > 2.5 77.5%, 18.5%, 3.2%, 0.8% have CR < 1,< 2.5,< 5,> 5, respectively.

First three do reduced monitoring per SMF. For the 0.8%, assume these will also check radium 226 and do 4 Qs initially then 1 per yr. 77.5%, 18.5%, 3.2%, 0.8% have CR< 1,< 2.5,< 5,> 5, respectively.

First three do reduced monitoring per SMF. For the 0.8%, assume these will also check radium 226 and do 4 Qs initially then 1 per yr. 1.4% of Small CWSs 0.9% of Large CWSs 0.3% of Small CWSs 0.4% of Large CWSs 0.5% of Small CWSs 0.9% of Large CWSs 0.8% of Small CWSs 1.3% of Large CWSs 96.2% of Small CWSs 95.3% of Large CWSs 0.9% of Small CWSs 1.3% of Large CWSs 112 2000 COMBINED RADIUMS SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA< 5 and RA228< 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 2 0 0 Systems 23,412 23,412 23,412 23,412 23,412 23,412 Total Samples 0 0 0 58530 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 6438300 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 5234390 0 0 GA< 5 and RA228< 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 2 0 0 Systems 16,041 16,041 16,041 16,041 16,041 16,041 Total Samples 0 0 0 73146.96 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 8046166 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 6541598 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 2 0 Systems 5,589 5,589 5,589 5,589 5,589 5,589 Total Samples 0 0 0 0 13972.5 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 01536975 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 01173263 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 2 0 Systems 3,829 3,829 3,829 3,829 3,829 3,829 Total Samples 0 0 0 017460.24 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 01920626 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 01466127 0 GA< 5 and RA228< 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 2 Systems 967 967 967 967 967 967 Total Samples 0 0 0 0 0 2417.5 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 0 265925 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0189946.4 113 2000 COMBINED RADIUMS SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA< 5 and RA228< 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 1 0 0 0 0 Systems 23,412 23,412 23,412 23,412 23,412 23,412 Total Samples 0 29265 0 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 3219150 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 1999472 0 0 0 0 GA< 5 and RA228< 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 1 0 0 0 0 Systems 16,041 16,041 16,041 16,041 16,041 16,041 Total Samples 0 36573.48 0 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 4023083 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 2498809 0 0 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 0 Systems 5,589 5,589 5,589 5,589 5,589 5,589 Total Samples 0 0 6986.25 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 768487.5 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 446795.1 0 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 0 Systems 3,829 3,829 3,829 3,829 3,829 3,829 Total Samples 0 0 8730.12 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 960313.2 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 558321.6 0 0 0 GA< 5 and RA228< 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 1 0 0 Systems 967 967 967 967 967 967 Total Samples 0 0 0 1208.75 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 132962.5 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 72262.23 0 0 114 2000 COMBINED RADIUMS SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA< 5 and RA228< 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 1 0 Systems 23,412 23,412 23,412 23,412 23,412 23,412 Total Samples 0 0 0 0 29265 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 3219150 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 1091237 0 GA< 5 and RA228< 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 1 0 Systems 16,041 16,041 16,041 16,041 16,041 16,041 Total Samples 0 0 0 0 36573.48 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 4023083 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 1363757 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 0 Systems 5,589 5,589 5,589 5,589 5,589 5,589 Total Samples 0 0 6986.25 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 768487.5 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 297863.4 0 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 0 Systems 3,829 3,829 3,829 3,829 3,829 3,829 Total Samples 0 0 8730.12 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 960313.2 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 372214.4 0 0 0 GA< 5 and RA228< 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 1 0 0 1 0 0 Systems 967 967 967 967 967 967 Total Samples 1208.75 0 0 1208.75 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 132962.5 0 0 132962.5 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 59094.44 0 0 48174.82 0 0 115 2000 COMBINED RADIUMS SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA< 5 and RA228< 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 Systems 23,412 23,412 23,412 23,412 23,412 Total Samples 0 0 0 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA< 5 and RA228< 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 Systems 16,041 16,041 16,041 16,041 16,041 Total Samples 0 0 0 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 Systems 5,589 5,589 5,589 5,589 5,589 Total Samples 0 0 6986.25 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 768487.5 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 198575.6 0 0 GA< 5 and RA228< 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 Systems 3,829 3,829 3,829 3,829 3,829 Total Samples 0 0 8730.12 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 960313.2 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 248142.9 0 0 GA< 5 and RA228< 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 1 0 0 1 0 Systems 967 967 967 967 967 Total Samples 1208.75 0 0 1208.75 0 Cost per Sample 110 110 110 110 110 Total Cost 132962.5 0 0 132962.5 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 39338.02 0 0 32116.55 0 116 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL GA< 5 and RA228< 2.5 and CR< 1 SM Sites per System Sampling Frequency per Site Systems Total Samples 117060 Cost per Sample Total Cost Discount Rate Present Value Cost 8325099.582 GA< 5 and RA228< 2.5 and CR< 1 LG Sites per System Sampling Frequency per Site Systems Total Samples 146293.92 Cost per Sample Total Cost Discount Rate Present Value Cost 10404164.12 GA< 5 and RA228< 2.5 and 1< CR< 2.5 SM Sites per System Sampling Frequency per Site Systems Total Samples 34931.25 Cost per Sample Total Cost Discount Rate Present Value Cost 2116497.37 GA< 5 and RA228< 2.5 and 1< CR< 2.5 LG Sites per System Sampling Frequency per Site Systems Total Samples 43650.6 Cost per Sample Total Cost Discount Rate Present Value Cost 2644806.015 GA< 5 and RA228< 2.5 and 2.5< CR< 5 SM Sites per System Sampling Frequency per Site Systems Total Samples 8461.25 Cost per Sample Total Cost Discount Rate Present Value Cost 440932.4838 117 2000 COMBINED RADIUMS SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA< 5 and RA228< 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 2 Systems 662 662 662 662 662 662 Total Samples 0 0 0 0 0 3018.72 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 0332059.2 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0237185.1 GA< 5 and RA228< 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 8 2 2 Systems 242 242 242 242 242 242 Total Samples 0 0 0 2420 605 605 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 242000 60500 60500 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 196748 46183.21 43214.29 GA< 5 and RA228< 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 8 2 2 Systems 166 166 166 166 166 166 Total Samples 0 0 0 3027.84 756.96 756.96 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 302784 75696 75696 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 246165.9 57783.21 54068.57 GA< 5 and RA228> 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 2 0 0 Systems 219 219 219 219 219 219 Total Samples 0 0 0 547.5 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 60225 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 48963.41 0 0 GA< 5 and RA228> 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 2 0 0 Systems 219 219 219 219 219 219 Total Samples 0 0 0 998.64 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 109850.4 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 89309.27 0 0 118 2000 COMBINED RADIUMS SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA< 5 and RA228< 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 1 0 0 Systems 662 662 662 662 662 662 Total Samples 0 0 0 1509.36 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 166029.6 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 90233.48 0 0 GA< 5 and RA228< 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 242 242 242 242 242 242 Total Samples 605 605 605 605 605 605 Cost per Sample 100 100 100 100 100 100 Total Cost 60500 60500 60500 60500 60500 60500 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 40333.33 37577.64 35174.42 32880.43 30710.66 28809.52 GA< 5 and RA228< 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 166 166 166 166 166 166 Total Samples 756.96 756.96 756.96 756.96 756.96 756.96 Cost per Sample 100 100 100 100 100 100 Total Cost 75696 75696 75696 75696 75696 75696 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 50464 47016.15 44009.3 41139.13 38424.37 36045.71 GA< 5 and RA228> 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 1 0 0 0 0 Systems 219 219 219 219 219 219 Total Samples 0 273.75 0 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 30112.5 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 18703.42 0 0 0 0 GA< 5 and RA228> 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 1 0 0 0 0 Systems 219 219 219 219 219 219 Total Samples 0 499.32 0 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 54925.2 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 34115.03 0 0 0 0 119 2000 COMBINED RADIUMS SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA< 5 and RA228< 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 1 0 0 1 0 0 Systems 662 662 662 662 662 662 Total Samples 1509.36 0 0 1509.36 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 166029.6 0 0 166029.6 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 73790.93 0 0 60155.65 0 0 GA< 5 and RA228< 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 242 242 242 242 242 242 Total Samples 605 605 605 605 605 605 Cost per Sample 100 100 100 100 100 100 Total Cost 60500 60500 60500 60500 60500 60500 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 26888.89 25103.73 23449.61 21920.29 20508.47 19145.57 GA< 5 and RA228< 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 166 166 166 166 166 166 Total Samples 756.96 756.96 756.96 756.96 756.96 756.96 Cost per Sample 100 100 100 100 100 100 Total Cost 75696 75696 75696 75696 75696 75696 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 33642.67 31409.13 29339.53 27426.09 25659.66 23954.43 GA< 5 and RA228> 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 1 0 Systems 219 219 219 219 219 219 Total Samples 0 0 0 0 273.75 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 30112.5 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 10207.63 0 GA< 5 and RA228> 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 1 0 Systems 219 219 219 219 219 219 Total Samples 0 0 0 0 499.32 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 54925.2 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 0 18618.71 0 120 2000 COMBINED RADIUMS SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA< 5 and RA228< 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 1 0 0 1 0 Systems 662 662 662 662 662 Total Samples 1509.36 0 0 1509.36 0 Cost per Sample 110 110 110 110 110 Total Cost 166029.6 0 0 166029.6 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 49121.18 0 0 40103.77 0 GA< 5 and RA228< 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 Systems 242 242 242 242 242 Total Samples 605 605 605 605 605 Cost per Sample 100 100 100 100 100 Total Cost 60500 60500 60500 60500 60500 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 17899.41 16712.71 15633.07 14613.53 13656.88 GA< 5 and RA228< 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 Systems 166 166 166 166 166 Total Samples 756.96 756.96 756.96 756.96 756.96 Cost per Sample 100 100 100 100 100 Total Cost 75696 75696 75696 75696 75696 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 22395.27 20910.5 19559.69 18284.06 17087.13 GA< 5 and RA228> 2.5 and CR< 1 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 Systems 219 219 219 219 219 Total Samples 0 0 0 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA< 5 and RA228> 2.5 and CR< 1 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 Systems 219 219 219 219 219 Total Samples 0 0 0 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 121 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL GA< 5 and RA228< 2.5 and 2.5< CR< 5 LG Sites per System Sampling Frequency per Site Systems Total Samples 10565.52 Cost per Sample Total Cost Discount Rate Present Value Cost 550590.1582 GA< 5 and RA228< 2.5 and CR> 5 SM Sites per System Sampling Frequency per Site Systems Total Samples 13915 Cost per Sample Total Cost Discount Rate Present Value Cost 707163.6411 GA< 5 and RA228< 2.5 and CR> 5 LG Sites per System Sampling Frequency per Site Systems Total Samples 17410.08 Cost per Sample Total Cost Discount Rate Present Value Cost 884784.4459 GA< 5 and RA228> 2.5 and CR< 1 SM Sites per System Sampling Frequency per Site Systems Total Samples 1095 Cost per Sample Total Cost Discount Rate Present Value Cost 77874.4579 GA< 5 and RA228> 2.5 and CR< 1 LG Sites per System Sampling Frequency per Site Systems Total Samples 1997.28 Cost per Sample Total Cost Discount Rate Present Value Cost 142043.0112 122 2000 COMBINED RADIUMS SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA< 5 and RA228> 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 2 0 Systems 52 52 52 52 52 52 Total Samples 0 0 0 0 130 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 14300 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 010916.03 0 GA< 5 and RA228> 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 2 0 Systems 52 52 52 52 52 52 Total Samples 0 0 0 0 237.12 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 26083.2 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 019910.84 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 2 Systems 9 9 9 9 9 9 Total Samples 0 0 0 0 0 22.5 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 0 2475 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 01767.857 GA< 5 and RA228> 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 2 Systems 9 9 9 9 9 9 Total Samples 0 0 0 0 0 41.04 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 0 0 4514.4 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 03224.571 GA< 5 and RA228> 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 8 2 2 Systems 2 2 2 2 2 2 Total Samples 0 0 0 20 5 5 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 2000 500 500 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 1626.016 381.6794 357.1429 123 2000 COMBINED RADIUMS SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA< 5 and RA228> 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 0 Systems 52 52 52 52 52 52 Total Samples 0 0 65 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 7150 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 4156.977 0 0 0 GA< 5 and RA228> 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 0 Systems 52 52 52 52 52 52 Total Samples 0 0 118.56 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 13041.6 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 7582.326 0 0 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 1 0 0 Systems 9 9 9 9 9 9 Total Samples 0 0 0 11.25 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 1237.5 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 672.5543 0 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 1 0 0 Systems 9 9 9 9 9 9 Total Samples 0 0 0 20.52 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 0 2257.2 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 1226.739 0 0 GA< 5 and RA228> 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 2 2 2 2 2 2 Total Samples 5 5 5 5 5 5 Cost per Sample 100 100 100 100 100 100 Total Cost 500 500 500 500 500 500 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 333.3333 310.559 290.6977 271.7391 253.8071 238.0952 124 2000 COMBINED RADIUMS SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA< 5 and RA228> 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 0 Systems 52 52 52 52 52 52 Total Samples 0 0 65 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 7150 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 2771.318 0 0 0 GA< 5 and RA228> 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 0 Systems 52 52 52 52 52 52 Total Samples 0 0 118.56 0 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 0 0 13041.6 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 5054.884 0 0 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 1 0 0 1 0 0 Systems 9 9 9 9 9 9 Total Samples 11.25 0 0 11.25 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 1237.5 0 0 1237.5 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 550 0 0 448.3696 0 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 1 0 0 1 0 0 Systems 9 9 9 9 9 9 Total Samples 20.52 0 0 20.52 0 0 Cost per Sample 110 110 110 110 110 110 Total Cost 2257.2 0 0 2257.2 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 1003.2 0 0 817.8261 0 0 GA< 5 and RA228> 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 2 2 2 2 2 2 Total Samples 5 5 5 5 5 5 Cost per Sample 100 100 100 100 100 100 Total Cost 500 500 500 500 500 500 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 222.2222 207.4689 193.7984 181.1594 169.4915 158.2278 125 2000 COMBINED RADIUMS SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA< 5 and RA228> 2.5 and 1< CR< 2.5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 1 0 0 Systems 52 52 52 52 52 Total Samples 0 0 65 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 7150 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 1847.545 0 0 GA< 5 and RA228> 2.5 and 1< CR< 2.5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 1 0 0 Systems 52 52 52 52 52 Total Samples 0 0 118.56 0 0 Cost per Sample 110 110 110 110 110 Total Cost 0 0 13041.6 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 3369.922 0 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 1 0 0 1 0 Systems 9 9 9 9 9 Total Samples 11.25 0 0 11.25 0 Cost per Sample 110 110 110 110 110 Total Cost 1237.5 0 0 1237.5 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 366.1243 0 0 298.913 0 GA< 5 and RA228> 2.5 and 2.5< CR< 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 1 0 0 1 0 Systems 9 9 9 9 9 Total Samples 20.52 0 0 20.52 0 Cost per Sample 110 110 110 110 110 Total Cost 2257.2 0 0 2257.2 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 667.8107 0 0 545.2174 0 GA< 5 and RA228> 2.5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 Systems 2 2 2 2 2 Total Samples 5 5 5 5 5 Cost per Sample 100 100 100 100 100 Total Cost 500 500 500 500 500 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 147.929 138.1215 129.199 120.7729 112.8668 126 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL GA< 5 and RA228> 2.5 and 1< CR< 2.5 SM Sites per System Sampling Frequency per Site Systems Total Samples 325 Cost per Sample Total Cost Discount Rate Present Value Cost 19691.87033 GA< 5 and RA228> 2.5 and 1< CR< 2.5 LG Sites per System Sampling Frequency per Site Systems Total Samples 592.8 Cost per Sample Total Cost Discount Rate Present Value Cost 35917.97148 GA< 5 and RA228> 2.5 and 2.5< CR< 5 SM Sites per System Sampling Frequency per Site Systems Total Samples 78.75 Cost per Sample Total Cost Discount Rate Present Value Cost 4103.81836 GA< 5 and RA228> 2.5 and 2.5< CR< 5 LG Sites per System Sampling Frequency per Site Systems Total Samples 143.64 Cost per Sample Total Cost Discount Rate Present Value Cost 7485.364688 GA< 5 and RA228> 2.5 and CR> 5 SM Sites per System Sampling Frequency per Site Systems Total Samples 115 Cost per Sample Total Cost Discount Rate Present Value Cost 5844.327612 127 2000 COMBINED RADIUMS SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA< 5 and RA228> 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 8 2 2 Systems 2 2 2 2 2 2 Total Samples 0 0 0 36.48 9.12 9.12 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 3648 912 912 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 2965.854 696.1832 651.4286 GA> 5 and CR< 1 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 0 Systems 251 251 251 251 251 251 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 and CR< 1 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 0 Systems 282 282 282 282 282 282 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 0 Systems 157 157 157 157 157 157 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 0 Systems 195 195 195 195 195 195 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 128 2000 COMBINED RADIUMS SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA< 5 and RA228> 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 2 2 2 2 2 2 Total Samples 9.12 9.12 9.12 9.12 9.12 9.12 Cost per Sample 100 100 100 100 100 100 Total Cost 912 912 912 912 912 912 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 608 566.4596 530.2326 495.6522 462.9442 434.2857 GA> 5 and CR< 1 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 2 0 0 0 0 Systems 251 251 251 251 251 251 Total Samples 0 627.5 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 62750 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 38975.16 0 0 0 0 GA> 5 and CR< 1 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 2 0 0 0 0 Systems 282 282 282 282 282 282 Total Samples 0 1285.92 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 128592 0 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 79870.81 0 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 2 0 0 0 Systems 157 157 157 157 157 157 Total Samples 0 0 392.5 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 39250 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 22819.77 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 2 0 0 0 Systems 195 195 195 195 195 195 Total Samples 0 0 889.2 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 88920 0 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 51697.67 0 0 0 129 2000 COMBINED RADIUMS SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA< 5 and RA228> 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 2 2 2 2 2 2 Total Samples 9.12 9.12 9.12 9.12 9.12 9.12 Cost per Sample 100 100 100 100 100 100 Total Cost 912 912 912 912 912 912 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 405.3333 378.4232 353.4884 330.4348 309.1525 288.6076 GA> 5 and CR< 1 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 2 0 Systems 251 251 251 251 251 251 Total Samples 0 0 0 0 627.5 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 62750 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 021271.19 0 GA> 5 and CR< 1 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 2 0 Systems 282 282 282 282 282 282 Total Samples 0 0 0 0 1285.92 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 128592 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 0 043590.51 0 GA> 5 and 1< CR< 2.5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 2 0 0 0 Systems 157 157 157 157 157 157 Total Samples 0 0 392.5 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 39250 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 15213.18 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 2 0 0 0 Systems 195 195 195 195 195 195 Total Samples 0 0 889.2 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 88920 0 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 34465.12 0 0 0 130 2000 COMBINED RADIUMS SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA< 5 and RA228> 2.5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 Systems 2 2 2 2 2 Total Samples 9.12 9.12 9.12 9.12 9.12 Cost per Sample 100 100 100 100 100 Total Cost 912 912 912 912 912 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 269.8225 251.9337 235.6589 220.2899 205.8691 GA> 5 and CR< 1 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 Systems 251 251 251 251 251 Total Samples 0 0 0 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA> 5 and CR< 1 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 Systems 282 282 282 282 282 Total Samples 0 0 0 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 0 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 0 0 0 GA> 5 and 1< CR< 2.5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 2 0 0 Systems 157 157 157 157 157 Total Samples 0 0 392.5 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 39250 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 10142.12 0 0 GA> 5 and 1< CR< 2.5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 2 0 0 Systems 195 195 195 195 195 Total Samples 0 0 889.2 0 0 Cost per Sample 100 100 100 100 100 Total Cost 0 0 88920 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 22976.74 0 0 131 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL GA< 5 and RA228> 2.5 and CR> 5 LG Sites per System Sampling Frequency per Site Systems Total Samples 209.76 Cost per Sample Total Cost Discount Rate Present Value Cost 10660.05357 GA> 5 and CR< 1 w/ GF SM Sites per System Sampling Frequency per Site Systems Total Samples 1255 Cost per Sample Total Cost Discount Rate Present Value Cost 60246.34172 GA> 5 and CR< 1 w/ GF LG Sites per System Sampling Frequency per Site Systems Total Samples 2571.84 Cost per Sample Total Cost Discount Rate Present Value Cost 123461.3159 GA> 5 and 1< CR< 2.5 w/ GF SM Sites per System Sampling Frequency per Site Systems Total Samples 1177.5 Cost per Sample Total Cost Discount Rate Present Value Cost 48175.0646 GA> 5 and 1< CR< 2.5 w/ GF LG Sites per System Sampling Frequency per Site Systems Total Samples 2667.6 Cost per Sample Total Cost Discount Rate Present Value Cost 109139.5349 132 2000 COMBINED RADIUMS SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA> 5 and 2.5< CR< 5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 0 0 0 Systems 94 94 94 94 94 94 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 and 2.5< CR< 5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 0 0 0 Systems 87 87 87 87 87 87 Total Samples 0 0 0 0 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 8 2 2 Systems 440 440 440 440 440 440 Total Samples 0 0 0 4400 1100 1100 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 440000 110000 110000 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 357723.6 83969.47 78571.43 GA> 5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 8 2 2 Systems 195 195 195 195 195 195 Total Samples 0 0 0 3556.8 889.2 889.2 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 355680 88920 88920 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 289170.7 67877.86 63514.29 133 2000 COMBINED RADIUMS SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA> 5 and 2.5< CR< 5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 0 0 0 2 0 0 Systems 94 94 94 94 94 94 Total Samples 0 0 0 235 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 23500 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 12771.74 0 0 GA> 5 and 2.5< CR< 5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 0 0 0 2 0 0 Systems 87 87 87 87 87 87 Total Samples 0 0 0 396.72 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 0 0 0 39672 0 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 0 0 21560.87 0 0 GA> 5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 440 440 440 440 440 440 Total Samples 1100 1100 1100 1100 1100 1100 Cost per Sample 100 100 100 100 100 100 Total Cost 110000 110000 110000 110000 110000 110000 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 73333.33 68322.98 63953.49 59782.61 55837.56 52380.95 GA> 5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 195 195 195 195 195 195 Total Samples 889.2 889.2 889.2 889.2 889.2 889.2 Cost per Sample 100 100 100 100 100 100 Total Cost 88920 88920 88920 88920 88920 88920 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 59280 55229.81 51697.67 48326.09 45137.06 42342.86 134 2000 COMBINED RADIUMS SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA> 5 and 2.5< CR< 5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 0 0 2 0 0 Systems 94 94 94 94 94 94 Total Samples 235 0 0 235 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 23500 0 0 23500 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 10444.44 0 0 8514.493 0 0 GA> 5 and 2.5< CR< 5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 0 0 2 0 0 Systems 87 87 87 87 87 87 Total Samples 396.72 0 0 396.72 0 0 Cost per Sample 100 100 100 100 100 100 Total Cost 39672 0 0 39672 0 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 17632 0 0 14373.91 0 0 GA> 5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 2 Systems 440 440 440 440 440 440 Total Samples 1100 1100 1100 1100 1100 1100 Cost per Sample 100 100 100 100 100 100 Total Cost 110000 110000 110000 110000 110000 110000 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 48888.89 45643.15 42635.66 39855.07 37288.14 34810.13 GA> 5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 2 Systems 195 195 195 195 195 195 Total Samples 889.2 889.2 889.2 889.2 889.2 889.2 Cost per Sample 100 100 100 100 100 100 Total Cost 88920 88920 88920 88920 88920 88920 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 39520 36896.27 34465.12 32217.39 30142.37 28139.24 135 2000 COMBINED RADIUMS SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA> 5 and 2.5< CR< 5 w/ GF SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 0 0 2 0 Systems 94 94 94 94 94 Total Samples 235 0 0 235 0 Cost per Sample 100 100 100 100 100 Total Cost 23500 0 0 23500 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 6952.663 0 0 5676.329 0 GA> 5 and 2.5< CR< 5 w/ GF LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 0 0 2 0 Systems 87 87 87 87 87 Total Samples 396.72 0 0 396.72 0 Cost per Sample 100 100 100 100 100 Total Cost 39672 0 0 39672 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 11737.28 0 0 9582.609 0 GA> 5 and CR> 5 SM Sites per System 1.25 1.25 1.25 1.25 1.25 Sampling Frequency per Site 2 2 2 2 2 Systems 440 440 440 440 440 Total Samples 1100 1100 1100 1100 1100 Cost per Sample 100 100 100 100 100 Total Cost 110000 110000 110000 110000 110000 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 32544.38 30386.74 28423.77 26570.05 24830.7 GA> 5 and CR> 5 LG Sites per System 2.28 2.28 2.28 2.28 2.28 Sampling Frequency per Site 2 2 2 2 2 Systems 195 195 195 195 195 Total Samples 889.2 889.2 889.2 889.2 889.2 Cost per Sample 100 100 100 100 100 Total Cost 88920 88920 88920 88920 88920 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 26307.69 24563.54 22976.74 21478.26 20072.23 136 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL GA> 5 and 2.5< CR< 5 w/ GF SM Sites per System Sampling Frequency per Site Systems Total Samples 1175 Cost per Sample Total Cost Discount Rate Present Value Cost 44359.66755 GA> 5 and 2.5< CR< 5 w/ GF LG Sites per System Sampling Frequency per Site Systems Total Samples 1983.6 Cost per Sample Total Cost Discount Rate Present Value Cost 74886.66941 GA> 5 and CR> 5 SM Sites per System Sampling Frequency per Site Systems Total Samples 25300 Cost per Sample Total Cost Discount Rate Present Value Cost 1285752.075 GA> 5 and CR> 5 LG Sites per System Sampling Frequency per Site Systems Total Samples 20451.6 Cost per Sample Total Cost Discount Rate Present Value Cost 1039355.223 137 2000 COMBINED RADIUMS SCENARIO 2 TOTAL TOTAL TOTAL TOTAL PRESENT VALUE 29163034.59 YEARS COVERED 23 INTEREST RATE 7% ANNUALIZED PRESENT VALUE ($ 2,587,167.30)

TOTAL SAMPLES 453426.99 BURDEN PER SAMPLE ( HRS.) 0.5 TOTAL BURDEN ( HRS.) 226713.495 YEARS COVERED 23 AVERAGE ANNUAL BURDEN ( HRS.) 9857.108478 THREE YEAR TOTAL COST 0 THREE YEAR ANNUALIZED COST $ 0.00 138 2000 URANIUM 139 Gross alpha > 15 p Ci/ L ? System w ill analyze for uranium.* U ranium > 30 pCi/ L Uranium  2000 M onitoring ( Scenario 2A: Initial monitoring in Y rs. 4 7, SMF 3 yr. Cycles thereafter)

Monitoring for uranium not required. Can assume all GA is uranium and substitute GA for uranium. Yes No Out of Compliance for U. Treat/ Monitor Q for one year..** Assume States w ill require systems to monitor 1 per year GA > 15 and U < 30 Monitor 1 every 3 years Uranium Std = 30 pCi/ L Cost of Analysis for GA is $ 45 Cost of Analysis for Uranium is $ 128 Samples taken from entry point to distribution system No Compositing Can grandfather GA but don't assume they will all grandfather uranium results. Yes No GA between 3 and 15 monitor 1 every 6 years GA < 3 then monitor 1 every 9 * Assume 50% of the GW systems will initially check for uranium  4 Q samples. Others will GF.

* Assume 25% of SW systems will actually m onitor for uranium and take 4 Q and the others will GF.

** One quarter per year covered by GA monitoring.

Assume all these w ill check initially for uranium  4 Q samples.

88.8% of SM CWSs 88.4% of LG CWSs 9.1% of SM CWSs 9.4% of LG CWSs 0.6% of SM CWSs 1.7% of LG CWSs 1.5% of SM CWSs 0.4% of LG CWSs 140 141 2000 URANIUM SCENARIO 2 YEAR 1 YEAR 2 YEAR 3 YEAR 4 YEAR 5 YEAR 6 GA> 15 AND U< 30 with GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 0 0 0 0 0 Systems 305 305 305 305 305 305 Total Samples 0 0 0 0 0 0 Cost per Sample 128 128 128 128 128 128 Total Cost 0 0 0 0 0 0 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 0 0 0 GA> 15 AND U< 30, No GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 0 0 1 1 1 Systems 252 252 252 252 252 252 Total Samples 0 0 0 420.84 420.84 420.84 Cost per Sample 128 128 128 128 128 128 Total Cost 0 0 0 53867.52 53867.52 53867.52 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 43794.73 41120.24 38476.8 GA> 15 and U> 30 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 0 0 3 1 1 Systems 558 558 558 558 558 558 Total Samples 0 0 0 2795.58 931.86 931.86 Cost per Sample 128 128 128 128 128 128 Total Cost 0 0 0 357834.2 119278.1 119278.1 Discount Rate 1 1.07 1.14 1.23 1.31 1.4 Present Value Cost 0 0 0 290922.1 91051.97 85198.63 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COST THREE YEAR ANNUALIZED COST 142 2000 URANIUM SCENARIO 2 YEAR 7 YEAR 8 YEAR 9 YEAR 10 YEAR 11 YEAR 12 GA> 15 AND U< 30 with GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 1 0 0 1 0 Systems 305 305 305 305 305 305 Total Samples 0 509.35 0 0 509.35 0 Cost per Sample 128 128 128 128 128 128 Total Cost 0 65196.8 0 0 65196.8 0 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 0 40494.91 0 0 33094.82 0 GA> 15 AND U< 30, No GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 1 0 1 0 0 1 Systems 252 252 252 252 252 252 Total Samples 420.84 0 420.84 0 0 420.84 Cost per Sample 128 128 128 128 128 128 Total Cost 53867.52 0 53867.52 0 0 53867.52 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 35911.68 0 31318.33 0 0 25651.2 GA> 15 and U> 30 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 1 1 1 1 1 1 Systems 558 558 558 558 558 558 Total Samples 931.86 931.86 931.86 931.86 931.86 931.86 Cost per Sample 128 128 128 128 128 128 Total Cost 119278.1 119278.1 119278.1 119278.1 119278.1 119278.1 Discount Rate 1.5 1.61 1.72 1.84 1.97 2.1 Present Value Cost 79518.72 74085.76 69347.72 64825.04 60547.25 56799.09 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COST THREE YEAR ANNUALIZED COST 143 2000 URANIUM SCENARIO 2 YEAR 13 YEAR 14 YEAR 15 YEAR 16 YEAR 17 YEAR 18 GA> 15 AND U< 30 with GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 1 0 0 1 0 Systems 305 305 305 305 305 305 Total Samples 0 509.35 0 0 509.35 0 Cost per Sample 128 128 128 128 128 128 Total Cost 0 65196.8 0 0 65196.8 0 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 27052.61 0 0 22100.61 0 GA> 15 AND U< 30, No GF Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 0 1 0 0 1 Systems 252 252 252 252 252 252 Total Samples 0 0 420.84 0 0 420.84 Cost per Sample 128 128 128 128 128 128 Total Cost 0 0 53867.52 0 0 53867.52 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 0 0 20878.88 0 0 17046.68 GA> 15 and U> 30 Sites per System 1.67 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 1 1 1 1 1 1 Systems 558 558 558 558 558 558 Total Samples 931.86 931.86 931.86 931.86 931.86 931.86 Cost per Sample 128 128 128 128 128 128 Total Cost 119278.1 119278.1 119278.1 119278.1 119278.1 119278.1 Discount Rate 2.25 2.41 2.58 2.76 2.95 3.16 Present Value Cost 53012.48 49492.98 46231.81 43216.7 40433.25 37746.23 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COST THREE YEAR ANNUALIZED COST 144 2000 URANIUM SCENARIO 2 YEAR 19 YEAR 20 YEAR 21 YEAR 22 YEAR 23 GA> 15 AND U< 30 with GF Sites per System 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 1 0 0 1 Systems 305 305 305 305 305 Total Samples 0 509.35 0 0 509.35 Cost per Sample 128 128 128 128 128 Total Cost 0 65196.8 0 0 65196.8 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 18010.17 0 0 14717.11 GA> 15 AND U< 30, No GF Sites per System 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 0 0 1 0 0 Systems 252 252 252 252 252 Total Samples 0 0 420.84 0 0 Cost per Sample 128 128 128 128 128 Total Cost 0 0 53867.52 0 0 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 0 0 13919.26 0 0 GA> 15 and U> 30 Sites per System 1.67 1.67 1.67 1.67 1.67 Sampling Frequency per Site 1 1 1 1 1 Systems 558 558 558 558 558 Total Samples 931.86 931.86 931.86 931.86 931.86 Cost per Sample 128 128 128 128 128 Total Cost 119278.1 119278.1 119278.1 119278.1 119278.1 Discount Rate 3.38 3.62 3.87 4.14 4.43 Present Value Cost 35289.37 32949.75 30821.21 28811.13 26925.07 TOTAL PRESENT VALUE YEARS COVERED INTEREST RATE ANNUALIZED PRESENT VALUE TOTAL SAMPLES BURDEN PER SAMPLE ( HRS.) TOTAL BURDEN ( HRS.) YEARS COVERED AVERAGE ANNUAL BURDEN ( HRS.)

THREE YEAR TOTAL COST THREE YEAR ANNUALIZED COST 145 2000 URANIUM SCENARIO 2 TOTAL TOTAL TOTAL GA> 15 AND U< 30 with GF Sites per System Sampling Frequency per Site Systems Total Samples 3056.1 Cost per Sample Total Cost Discount Rate Present Value Cost 155470.2298 GA> 15 AND U< 30, No GF Sites per System Sampling Frequency per Site Systems Total Samples 3787.56 Cost per Sample Total Cost Discount Rate Present Value Cost 268117.8046 GA> 15 and U> 30 Sites per System Sampling Frequency per Site Systems Total Samples 20500.92 Cost per Sample Total Cost Discount Rate Present Value Cost 1297226.304 TOTAL PRESENT VALUE 1720814.339 YEARS COVERED 23 INTEREST RATE 7% ANNUALIZED PRESENT VALUE ($ 152,660.20)

TOTAL SAMPLES 27344.58 BURDEN PER SAMPLE ( HRS.) 0.5 TOTAL BURDEN ( HRS.) 13672.29 YEARS COVERED 23 AVERAGE ANNUAL BURDEN ( HRS.) 594.4473913 THREE YEAR TOTAL COST 0 THREE YEAR ANNUALIZED COST $ 0.00


[Federal Register Volume 83, Number 202 (Thursday, October 18, 2018)] [Rules and Regulations] [Pages 52756-52760] [FR Doc No: 2018-22137]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0161; Product Identifier 2017-NM-088-AD; Amendment

39-19450; AD 2018-20-16]

RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of

Transportation (DOT).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are superseding Airworthiness Directive (AD) 2013-11-12,

which applied to certain Bombardier, Inc., Model BD-100-1A10 airplanes.

AD 2013-11-12 required inspecting for the correct serial number of a

certain hydraulic system accumulator, and replacing affected hydraulic

system accumulators with new or serviceable accumulators. This AD

expands the applicability and requires modifying or replacing certain

hydraulic brake system accumulators. This AD also requires revising the

maintenance or inspection program to add life limits for the

accumulators. This AD was prompted by a determination that certain

other hydraulic system accumulators must be modified or replaced and

life limits must be added. We are issuing this AD to address the unsafe

condition on these products.

DATES: This AD is effective November 23, 2018.

    The Director of the Federal Register approved the incorporation by

reference of certain publications listed in this AD as of November 23,

2018.

    The Director of the Federal Register approved the incorporation by

reference of a certain other publication listed in this AD as of July

9, 2013 (78 FR 33206, June 4, 2013).

ADDRESSES: For service information identified in this final rule,

contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,

Qu[eacute]bec H4S 1Y9, Canada; telephone<PHONE_NUMBER>; fax 514-855-

7401; email [email protected]; internet http://www.bombardier.com. You may view this referenced service information at

the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines,

WA. For information on the availability of this material at the FAA,

call<PHONE_NUMBER>. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-

0161.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-

0161; or in person at Docket Operations between 9 a.m. and 5 p.m.,

Monday through Friday, except Federal holidays. The AD docket contains

this final rule, the regulatory evaluation, any comments received, and

other information. The address for Docket Operations (phone: 800-647-

5527) is U.S. Department of Transportation, Docket Operations, M-30,

West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE,

Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer,

Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600

Stewart Avenue, Suite 410, Westbury, NY 11590; telephone<PHONE_NUMBER>;

fax<PHONE_NUMBER>.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR

part 39 to supersede AD 2013-11-12, Amendment 39-17472 (78 FR 33206,

June 4, 2013) (``AD 2013-11-12''). AD 2013-11-12 applied to certain

Bombardier, Inc., Model BD-100-1A10 airplanes. The NPRM published in

the Federal Register on March 9, 2018 (83 FR 10415). The NPRM was

prompted by a determination that certain other hydraulic system

accumulators must be modified or replaced and life limits must be

added. The NPRM proposed to continue to require inspecting for the

correct serial number of a certain hydraulic system accumulator, and

replacing affected hydraulic system accumulators with new or

serviceable accumulators. The NPRM also proposed to expand the

applicability and require modifying or replacing certain hydraulic

brake system accumulators. The NPRM also proposed to require revising

the maintenance or inspection program to add life limits for the

accumulators. We are issuing this AD to prevent failure of a screw cap

or end cap and loss of the related hydraulic system, which could result

in damage to airplane structure and consequent reduced controllability

of the airplane.

    Transport Canada Civil Aviation (TCCA), which is the aviation

authority for Canada, has issued Canadian Airworthiness Directive CF-

2011-41R1, dated March 27, 2017 (referred to after this as the

Mandatory Continuing Airworthiness Information, or ``the MCAI''), to

correct an unsafe condition for certain Bombardier, Inc. Model BD-100-

1A10 airplanes. The MCAI states:

    Seven cases of on-ground hydraulic accumulator screw cap/end cap

failure have been experienced on CL-600-2B19 aeroplanes, resulting

in loss of the associated hydraulic system and high-energy impact

damage to adjacent systems and structure. To date, the lowest number

of flight cycles accumulated at the time of failure has been 6991.

    Although there have been no failures to date on any BD-100-1A10

aeroplanes, accumulators similar to those installed on the CL-600-

2B19 are installed on the BD-100-1A10. The affected part numbers (P/

Ns) of the accumulators installed on BD-100-1A10 are 900095-1

(Auxiliary Hydraulic System accumulator), 33-155500 (Inboard Brake

accumulator), and 33-147500 (Outboard Brake accumulator).

    A detailed analysis of the calculated line of trajectory of a

failed screw cap/end cap for the accumulators has been conducted,

resulting in the identification of areas where systems and/or

structural components could potentially be damaged. Although all of

the failures on the CL-600-2B19 to date have occurred on the ground,

an in-flight failure affecting such components could potentially

have an adverse effect on the controllability of the aeroplane.

    Revision 1 of this [Canadian] AD is issued to mandate the

[inspection and] replacement [of] Brake System Hydraulic

accumulators that are not identified by the letter ``E'' or ``NAE''

after the serial number on the identification plate. Revision 1 also

mandates the re-orientation of the brake accumulators P/N 33-147500

and P/N 33-155500 and the insertion of three discard tasks in the

Challenger 300 Time Limits/Maintenance Checks (TLMC) Manual.

    You may examine the MCAI in the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-

0161.

Comments

    We gave the public the opportunity to participate in developing

this final rule. The following presents the comment received on the

NPRM and the FAA's response.

Request To Add Maintenance Manual

    NetJets Aviation stated that paragraph (n) of the proposed AD,

which requires revising the maintenance or inspection program to

incorporate certain life limit tasks, does not reference the Bombardier

Challenger 350 Time Limits/Maintenance Check (TLMC) Manual. NetJets

Aviation noted that only the Bombardier Challenger 300 TLMC Manual is

referenced.

    We infer that the commenter is asking that the Bombardier

Challenger 350 TLMC Manual be added as another source of service

information for accomplishing the actions required by paragraph (n) of

this AD. We agree with the commenter's request and have changed

paragraph (n) accordingly. Although the tasks identified in the

Bombardier Challenger 300 TLMC Manual also apply to Bombardier

Challenger 350 airplanes, we have included the Bombardier Challenger

350 TLMC in this AD for clarity.

Conclusion

    We reviewed the relevant data, considered the comment received, and

determined that air safety and the public interest require adopting

this final rule with the change described previously and minor

editorial changes. We have determined that these minor changes:

     Are consistent with the intent that was proposed in the

NPRM for addressing the unsafe condition; and

     Do not add any additional burden upon the public than was

already proposed in the NPRM.

    We also determined that this change will not increase the economic

burden on any operator or increase the scope of this final rule.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information:

     Service Bulletin 100-32-20, Revision 02, dated April 14,

2015, which describes procedures for modifying (e.g., re-orienting) the

installation of the hydraulic brake accumulators.

     Service Bulletin 100-32-21, dated May 24, 2012, which

describes procedures for replacing the hydraulic brake system

accumulators.

     Task 29-21-13-101 Discard the Auxiliary Hydraulic System

Accumulator, Part No. 900095-1, of Section 5-10-11 of Part 2,

``Airworthiness Limitations,'' of Bombardier Challenger 300 BD-100 Time

Limits/Maintenance Checks Manual, Revision 17, dated December 15, 2016;

and Bombardier Challenger 350, BD-100 Time Limits/Maintenance Checks

Manual, Revision 9, dated December 18, 2017, which describes procedures

for removal and installation of the hydraulic brake system

accumulators. These tasks are distinct since they apply to different

airplane models.

     Task 32-43-37-101 Discard the Brake Accumulator, Part No.

33-147500, of Section 5-10-11 of Part 2, ``Airworthiness Limitations,''

of Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks

Manual, Revision 17, dated December 15, 2016; and Bombardier Challenger

350, BD-100 Time Limits/Maintenance Checks Manual, Revision 9, dated

December 18, 2017, which describes procedures for removal and

installation of the brake accumulators. These tasks are distinct since

they apply to different airplane models.

     Task 32-44-05-101 Discard the Emergency/Parking Brake

Accumulator, Part No. 33-155500, of Section 5-10-11 of Part 2,

``Airworthiness Limitations,'' of Bombardier Challenger 300 BD-100 Time

Limits/Maintenance Checks Manual, Revision 17, dated December 15, 2016;

and Bombardier Challenger 350, BD-100 Time Limits/Maintenance Checks

Manual, Revision 9, dated December 18, 2017, which describes procedures

for removal and installation of the emergency parking brake

accumulators. These tasks are distinct since they apply to different

airplane models.

    This service information is reasonably available because the

interested parties have access to it through their normal course of

business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 187 airplanes of U.S. registry.

    We estimate the following costs to comply with this AD:

                                                                     Estimated Costs

--------------------------------------------------------------------------------------------------------------------------------------------------------

              Action                      Labor cost                 Parts cost                   Cost per product             Cost on U.S. operators

--------------------------------------------------------------------------------------------------------------------------------------------------------

Inspection to determine part        1 work-hour x $85 per  $0............................  $85...........................  $15,895.

 numbers (retained actions from AD   hour = $85.

 2013[dash]11[dash]12).

Modifying or replacing hydraulic    58 work-hours x $85    Up to $31,500.................  Up to $36,430.................  Up to $6,812,410.

 brake system accumulators (new      per hour = $4,930.

 actions).

--------------------------------------------------------------------------------------------------------------------------------------------------------

    We have determined that revising the maintenance or inspection

program takes an average of 90 work-hours per operator, although we

recognize that this number may vary from operator to operator. In the

past, we have estimated that this action takes 1 work-hour per

airplane. Since operators incorporate maintenance or inspection program

changes for their affected fleet(s), we have determined that a per-

operator estimate is more accurate than a per-airplane estimate.

Therefore, we estimate the total cost per operator to be $7,650 (90

work-hours x $85 per work-hour).

    We estimate the following costs to do any necessary replacements

that will be required based on the results of the inspection. We have

no way of determining the number of aircraft that might need these

replacements.

                                               On-Condition Costs

----------------------------------------------------------------------------------------------------------------

                                                                                Cost per

                   Action                                 Labor cost                Parts cost        product

----------------------------------------------------------------------------------------------------------------

Hydraulic accumulator replacement..........  5 work-hours x $85 per hour = $340.          $4,510          $4,850

----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to

issue rules on aviation safety. Subtitle I, section 106, describes the

authority of the FAA Administrator. Subtitle VII: Aviation Programs,

describes in more detail the scope of the Agency's authority.

    We are issuing this rulemaking under the authority described in

Subtitle VII, Part A, Subpart III, Section 44701: ``General

requirements.'' Under that section, Congress charges the FAA with

promoting safe flight of civil aircraft in air commerce by prescribing

regulations for practices, methods, and procedures the Administrator

finds necessary for safety in air commerce. This regulation is within

the scope of that authority because it addresses an unsafe condition

that is likely to exist or develop on products identified in this

rulemaking action.

    This AD is issued in accordance with authority delegated by the

Executive Director, Aircraft Certification Service, as authorized by

FAA Order 8000.51C. In accordance with that order, issuance of ADs is

normally a function of the Compliance and Airworthiness Division, but

during this transition period, the Executive Director has delegated the

authority to issue ADs applicable to transport category airplanes to

the Director of the System Oversight Division.

Regulatory Findings

    We determined that this AD will not have federalism implications

under Executive Order 13132. This AD will not have a substantial direct

effect on the States, on the relationship between the national

government and the States, or on the distribution of power and

responsibilities among the various levels of government.

    For the reasons discussed above, I certify that this AD:

    1. Is not a ``significant regulatory action'' under Executive Order

12866;

    2. Is not a ``significant rule'' under the DOT Regulatory Policies

and Procedures (44 FR 11034, February 26, 1979);

    3. Will not affect intrastate aviation in Alaska; and

    4. Will not have a significant economic impact, positive or

negative, on a substantial number of small entities under the criteria

of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by

reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the

Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0

1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13   [Amended]

0

2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD)

2013-11-12, Amendment 39-17472 (78

FR 33206, June 4, 2013), and adding the following new AD:

2018-20-16 Bombardier, Inc.: Amendment 39-19450; Docket No. FAA-

2018-0161; Product Identifier 2017-NM-088-AD.

(a) Effective Date

    This AD is effective November 23, 2018.

(b) Affected ADs

    This AD replaces AD 2013-11-12, Amendment 39-17472 (78 FR 33206,

June 4, 2013) (``AD 2013-11-12'').

(c) Applicability

    This AD applies to Bombardier, Inc., Model BD-100-1A10

airplanes, certificated in any category, having serial numbers 20003

through 20604 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 29, Hydraulic

Power.

(e) Reason

    This AD was prompted by reports of failure of a screw cap or end

cap of the hydraulic system accumulator while on the ground, which

resulted in loss of use of that hydraulic system and high-energy

impact damage to adjacent systems and structures. We are issuing

this AD to prevent failure of a screw cap or end cap and loss of the

related hydraulic system, which could result in damage to airplane

structure and consequent reduced controllability of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified,

unless already done.

(g) Retained Inspection With No Changes

    This paragraph restates the requirements of paragraph (g) of AD

2013-11-12 with no changes. For airplanes having serial numbers

20003 through 20335 inclusive: At the applicable time specified in

paragraph (g)(1), (g)(2), or (g)(3) of this AD: Inspect the

identification plate on the hydraulic system accumulator having part

number (P/N) 900095-1 to determine if an ``E'' is part of the suffix

of the serial number stamped on the identification plate, as listed

in paragraph 2.B. of the Accomplishment Instructions of Bombardier

Service Bulletin 100-29-14, dated December 16, 2010. A review of

airplane maintenance records is acceptable in lieu of this

inspection if the suffix of the serial number can be conclusively

determined from that review.

    (1) For an accumulator that has accumulated more than 3,150

total flight cycles as of July 9, 2013 (the effective date of AD

2013-11-12), inspect that accumulator within 350 flight cycles after

July 9, 2013.

    (2) For an accumulator that has accumulated 3,150 or fewer total

flight cycles as of July 9, 2013 (the effective date of AD 2013-11-

12), inspect that accumulator before it has accumulated 3,500 total

flight cycles.

    (3) For an accumulator on which it is not possible to determine

the total flight cycles accumulated as of July 9, 2013 (the

effective date of AD 2013-11-12), inspect that accumulator within

350 flight cycles after July 9, 2013.

(h) Retained Replacement With No Changes

    This paragraph restates the requirements of paragraph (h) of AD

2013-11-12 with no changes. If, during the inspection required by

paragraph (g) of this AD, any accumulator having P/N 900095-1 is

found on which the letter ``E'' is not part of the suffix of the

serial number on the identification plate: Before further flight,

replace the accumulator with a new or serviceable accumulator, in

accordance with paragraph 2.C. of the Accomplishment Instructions of

Bombardier Service Bulletin 100-29-14, dated December 16, 2010.

(i) Retained Parts Installation Prohibition With No Changes

    This paragraph restates the requirements of paragraph (i) of AD

2013-11-12 with no changes. For airplanes having serial numbers

20003 through 20335 inclusive: As of July 9, 2013 (the effective

date of AD 2013-11-12), no person may install on any airplane a

hydraulic system accumulator having P/N 900095-1, on which the

letter ``E'' is not part of the suffix of the serial number on the

identification plate.

(j) New Requirement of This AD: Replacement of Brake System Hydraulic

Accumulators

    For airplanes having serial numbers 20003 through 20347

inclusive: At the applicable time specified in paragraph (j)(1),

(j)(2), or (j)(3) of this AD, replace all brake system hydraulic

accumulators having P/N 33-147500 or P/N 33-155500 that are not

identified by the letter ``E'' or ``NAE'' after the serial number on

the identification plate with an accumulator of the same part number

that is identified by the letter ``E'' or ``NAE'' after the serial

number. Do the replacement in accordance with the Accomplishment

Instructions of Bombardier Service Bulletin 100-32-21, dated May 24,

2012.

    (1) For an accumulator that has accumulated more than 4,700

total flight cycles as of the effective date of this AD, inspect

that accumulator within 300 flight cycles after the effective date

of this AD.

    (2) For an accumulator that has accumulated 4,700 or fewer total

flight cycles as of the effective date of this AD, inspect that

accumulator before it has accumulated 5,000 total flight cycles.

    (3) For an accumulator on which it is not possible to determine

the total flight cycles accumulated as of the effective date of this

AD, inspect that accumulator within 300 flight cycles after the

effective date of this AD.

(k) New Requirement of This AD: Additional Parts Installation

Prohibition

    For airplanes having serial numbers 20003 through 20347

inclusive: As of the effective date of this AD, no person may

install on any airplane a hydraulic system accumulator having P/N

33-147500 or P/N 33-155500, on which the letter ``E'' or ``NAE'' is

not after the serial number on the identification plate.

(l) New Requirement of This AD: Modification of the Inboard and

Outboard Brake Accumulators

    For airplanes having serial numbers 20003 through 20395

inclusive: Within 1,600 flight hours or 14 months after the

effective date of this AD, whichever occurs first, modify (re-

orient) the installation of the inboard and outboard brake

accumulators, in accordance with the Accomplishment Instructions of

Bombardier Service Bulletin 100-32-20, Revision 02, dated April 14,

2015.

(m) Credit for Previous Actions

    This paragraph provides credit for the actions specified in

paragraph (l) of this AD, if those actions were performed before the

effective date of this AD using Bombardier Service Bulletin 100-32-

20, dated February 25, 2013; or Revision 01, dated March 5, 2015.

(n) New Requirement of This AD: Maintenance or Inspection Program

Revision

    For airplanes having serial numbers 20003 through 20604

inclusive: Within 30 days after the effective date of this AD,

revise the maintenance or inspection program, as applicable, to

incorporate life limit tasks 29-21-13-101, 32-43-37-101, and 32-44-

05-101 of Section 5-10-11 of Part 2, ``Airworthiness Limitations'',

of Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks

Manual, Revision 17, dated December 15, 2016; or Bombardier

Challenger 350 BD-100 Time Limits/Maintenance Checks Manual,

Revision 9, dated December 18, 2017, as applicable. The initial

compliance time for the tasks is within the applicable time

specified in that service information, or within 30 days after the

effective date of this AD, whichever occurs later.

(o) No Alternative Actions and Intervals

    After the maintenance or inspection program has been revised as

required by paragraph (n) of this AD, no alternative actions (e.g.,

inspections) or intervals may be used unless the actions or

intervals are approved as an alternative method of compliance (AMOC)

in accordance with the procedures specified in paragraph (p)(1) of

this AD.

(p) Other FAA AD Provisions

    (1) Alternative Methods of Compliance (AMOCs): The Manager, New

York ACO Branch, FAA, has the authority to approve AMOCs for this

AD, if requested using the procedures found in 14 CFR 39.19. In

accordance with 14 CFR 39.19, send your request to your principal

inspector or local Flight Standards District Office, as appropriate.

If sending information directly to the manager of the certification

office, send it to ATTN: Program Manager, Continuing Operational

Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,

Westbury, NY 11590; telephone:<PHONE_NUMBER>; fax:<PHONE_NUMBER>.

Before using any approved AMOC, notify your appropriate principal

inspector, or lacking a principal inspector, the manager of the

local flight standards district office/certificate holding district

office.

    (2) Contacting the Manufacturer: For any requirement in this AD

to obtain corrective actions from a manufacturer, the action must be

accomplished using a method approved by the Manager, New York ACO

Branch,

FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier,

Inc.'s TCCA Design Approval Organization (DAO). If approved by the

DAO, the approval must include the DAO-authorized signature.

(q) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information

(MCAI) Canadian Airworthiness Directive CF-2011-41R1, dated March

27, 2017, for related information. This MCAI may be found in the AD

docket on the internet at http://www.regulations.gov by searching

for and locating Docket No. FAA-2018-0161.

    (2) For more information about this AD, contact Cesar Gomez,

Aerospace Engineer, Airframe and Mechanical Systems Section, FAA,

New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY

11590; telephone:<PHONE_NUMBER>; fax:<PHONE_NUMBER>.

    (3) Service information identified in this AD that is not

incorporated by reference is available at the addresses specified in

paragraphs (r)(5) and (r)(6) of this AD.

(r) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the

incorporation by reference (IBR) of the service information listed

in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.

    (2) You must use this service information as applicable to do

the actions required by this AD, unless this AD specifies otherwise.

    (3) The following service information was approved for IBR on

November 23, 2018.

    (i) Bombardier Service Bulletin 100-32-20, Revision 02, dated

April 14, 2015.

    (ii) Bombardier Service Bulletin 100-32-21, dated May 24, 2012.

    (iii) Bombardier Challenger 300 BD-100 Time Limits/Maintenance

Checks Manual, Revision 17, dated December 15, 2016, Part 2,

Airworthiness Limitations, Section 5-10-11:

    (A) Task 29-21-13-101 Discard the Auxiliary Hydraulic System

Accumulator, Part No. 900095-1;

    (B) Task 32-43-37-101 Discard the Brake Accumulator, Part No.

33-147500;

    (C) Task 32-44-05-101 Discard the Emergency/Parking Brake

Accumulator, Part No. 33-155500.

    (iv) Bombardier Challenger 350 BD-100 Time Limits/Maintenance

Checks Manual, Revision 9, dated December 18, 2017, Part 2,

Airworthiness Limitations, Section 5-10-11:

    (A) Task 29-21-13-101 Discard the Auxiliary Hydraulic System

Accumulator, Part No. 900095-1;

    (B) Task 32-43-37-101 Discard the Brake Accumulator, Part No.

33-147500;

    (C) Task 32-44-05-101 Discard the Emergency/Parking Brake

Accumulator, Part No. 33-155500.

    (4) The following service information was approved for IBR on

July 9, 2013 (78 FR 33206, June 4, 2013).

    (i) Bombardier Service Bulletin 100-29-14, dated December 16,

2010.

    (ii) Reserved.

    (5) For service information identified in this AD, contact

Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,

Qu[eacute]bec H4S 1Y9, Canada; telephone<PHONE_NUMBER>; fax 514-855-

7401; email [email protected]; internet http://www.bombardier.com.

    (6) You may view this service information at the FAA, Transport

Standards Branch, 2200 South 216th St., Des Moines, WA. For

information on the availability of this material at the FAA, call

206-231-3195.

    (7) You may view this service information that is incorporated

by reference at the National Archives and Records Administration

(NARA). For information on the availability of this material at

NARA, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on September 25, 2018.

John P. Piccola,

Acting Director, System Oversight Division, Aircraft Certification

Service.

[FR Doc. 2018-22137 Filed 10-17-18; 8:45 am]

 BILLING CODE 4910-13-P