APPENDIX L. BCE Details. Chambers Creek Regional Wastewater Treatment Plant Facilities Plan. L November 2010

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1 Chambers Creek Regional Wastewater Treatment Plant Facilities Plan APPENDIX L BCE Details L November 2010 Use of contents on this sheet is subject to the limitations specified at the end of this document. O:\ Pierce County DPWU Wastewater\ Active Projects\ Chambers Creek WWTP Facilities Plan\014 Prepare Facilities Plan\FP Appendices\Final Facility Plan Appendices\F Appendix Flysheets.doc BROWN AND CALDWELL and Associated Firms

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3 Pierce County Department of Public Works and Utilities CCRWWTP Facilities Plan Alternatives Net Present Value Analysis Agency: Pierce County Department of Public Works and Utilities Sensitivity Adjustments (%) Results ($000s) Project/Problem: CCRWWTP Facilities Plan Risk Premium Benefits Capital Costs Other Costs Capital Cost 30-year NPV Benefit over Status Quo Alternative 1 Level of Service Alternative - 1 $183,701 ($898,654) ($898,654) Alternative 2 Level of Service Alternative - 2 $377,562 ($846,872) ($846,872) Alternative 3 Level of Service Alternative - 3 $419,182 ($798,621) ($798,621) Alternative 4 Level of Service Alternative - 4 $1,055,868 ($1,346,458) ($1,346,458) Year of analysis: 2009 Escalation rate: 5.00% Discount rate: 4.00% Select one All entries in dollars All entries in thousands of dollars

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5 From Summary Sheet: Risk adjustments (+/- percent): Pierce County Department of Public Works and Utilities Year of analysis 2009 Benefits CCRWWTP Facilities Plan Escalation rate 5.00% Capital costs Life Cycle Alternative Cost Analysis ($000s) Discount rate 4.00% Running costs Alternative 2 - LOS 1 Year Expressed in 2009 dollars, unescalated -- thousands of dollars Phase 1 24,510 24,510 24,510 24,510 24,510 24,510 Phase 2 6,962 6,962 6,962 6,962 6,962 Phase Phase 4 Total capital outlays 24,510 24,510 24,510 24,510 24,510 24,510 6,962 6,962 6,962 6,962 6, Puget Sound Conv Loading Benefit 2 Total benefits Energy Labor 1,082 1,082 1,082 1,082 1,082 1,082 1,201 1,220 1,240 1,260 1,279 1,299 1,319 1,339 1,358 1,378 1,398 1,418 1,437 1,457 1,477 1,496 1,516 1,536 1,556 1,575 1,595 1,615 1,634 1,654 1,674 Maint Equipment Chemical Total running costs 1,739 1,739 1,739 1,739 1,739 1,739 2,050 2,095 2,141 2,186 2,231 2,276 2,321 2,366 2,411 2,456 2,501 2,547 2,592 2,637 2,682 2,727 2,772 2,817 2,862 2,907 2,953 2,998 3,043 3,088 3,133 Conventional Effluent 6,023 6,023 6,023 6,023 6,023 6,023 6,023 6,023 6,023 6,023 6,023 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 16,456 PEC Discharge ,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 4,112 Reliability and Redundancy Change in Operating Costs 1,025 1,025 1,025 1,025 1,025 1,025 1,025 1,025 1,025 1,025 1,025 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 3,400 Odor Compliance Total risk costs 8,201 8,201 8,201 8,201 8,201 8,201 8,201 8,201 8,201 8,201 8,201 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 24,403 R&R cost 1 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 Total refurbishments 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,471 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 1,819 Net Benefit/(cost) (26,249) (26,249) (26,249) (26,249) (26,249) (35,921) (11,722) (11,767) (11,812) (11,857) (11,903) (11,948) (11,993) (12,038) (12,083) (19,090) (35,685) (35,730) (35,775) (35,820) (28,903) (29,315) (29,360) (29,405) (29,450) (29,495) (29,174) (29,219) (29,264) (29,309) (29,354) Expressed in escalated dollars with sensitivity adjustments Phase 1 25,735 27,022 28,373 29,792 31,282 32,846 Phase 2 15,197 15,957 16,755 17,592 18,472 Phase 3 1,072 1,125 1,181 1,241 1,303 Phase 4 Total capital outlays 25,735 27,022 28,373 29,792 31,282 32,846 15,197 15,957 16,755 17,592 18,472 1,072 1,125 1,181 1,241 1,303 Puget Sound Conv Loading Benefit 2 Total benefits Energy ,043 1,124 1,210 1,302 1,401 1,506 1,618 1,738 1,865 2,001 2,145 2,300 2,464 2,639 2,825 3,023 3,234 Labor 1,136 1,193 1,253 1,315 1,381 1,450 1,689 1,803 1,924 2,052 2,188 2,333 2,487 2,650 2,824 3,008 3,204 3,411 3,632 3,866 4,114 4,377 4,657 4,953 5,268 5,601 5,955 6,330 6,728 7,149 7,596 Maint Equipment ,009 1,072 1,139 Chemical ,045 1,123 1,206 1,295 1,389 1,490 1,597 1,712 1,833 1,963 2,101 2,248 Total running costs 1,826 1,917 2,013 2,114 2,220 2,330 2,885 3,096 3,321 3,560 3,815 4,087 4,377 4,685 5,013 5,362 5,733 6,129 6,549 6,996 7,472 7,977 8,515 9,086 9,693 10,338 11,023 11,751 12,525 13,346 14,218 Conventional Effluent 8,071 8,474 8,898 9,343 9,810 10,301 10,816 11,356 11,924 12,520 13,147 37,717 39,603 41,583 43,663 45,846 48,138 50,545 53,072 55,726 58,512 61,438 64,510 67,735 71,122 74,678 PEC Discharge 1,252 1,314 1,380 1,449 1,522 1,598 1,678 1,761 1,849 1,942 2,039 9,426 9,897 10,392 10,911 11,457 12,030 12,631 13,263 13,926 14,622 15,353 16,121 16,927 17,773 18,662 Reliability and Redundancy Change in Operating Costs 1,373 1,442 1,514 1,590 1,669 1,753 1,840 1,932 2,029 2,130 2,237 7,792 8,182 8,591 9,020 9,471 9,945 10,442 10,964 11,512 12,088 12,692 13,327 13,993 14,693 15,428 Odor Compliance ,048 1,101 1,156 1,214 1,274 1,338 1,405 1,475 1,549 1,626 1,708 Total risk costs 10,990 11,540 12,117 12,723 13,359 14,027 14,728 15,465 16,238 17,050 17,902 55,931 58,728 61,664 64,747 67,985 71,384 74,953 78,701 82,636 86,767 91,106 95, , , ,740 R&R cost 1 1,971 2,069 2,173 2,281 2,395 2,515 2,641 2,773 2,912 3,057 3,210 4,168 4,377 4,596 4,826 5,067 5,320 5,586 5,865 6,159 6,467 6,790 7,130 7,486 7,860 8,253 Total refurbishments 1,971 2,069 2,173 2,281 2,395 2,515 2,641 2,773 2,912 3,057 3,210 4,168 4,377 4,596 4,826 5,067 5,320 5,586 5,865 6,159 6,467 6,790 7,130 7,486 7,860 8,253 Net escalated benefit/(cost) (27,561) (28,940) (30,386) (31,906) (33,501) (48,137) (16,494) (17,386) (18,325) (19,315) (20,357) (21,456) (22,614) (23,834) (25,120) (41,671) (81,790) (85,988) (90,401) (95,041) (80,523) (85,753) (90,179) (94,833) (99,728) (104,875) (108,919) (114,542) (120,455) (126,673) (133,211) Life cycle cost analysis PVs in 2009 (26,501) (26,756) (27,013) (27,273) (27,535) (38,044) (12,534) (12,703) (12,875) (13,048) (13,224) (13,402) (13,582) (13,764) (13,948) (22,249) (41,989) (42,446) (42,908) (43,375) (35,336) (36,184) (36,588) (36,997) (37,410) (37,827) (37,775) (38,197) (38,624) (39,055) (39,492) NPV as of 2009 (898,654) Appendix A, Page 1 of 1 Alt_2

6 From Summary Sheet: Risk adjustments (+/- percent): Pierce County Department of Public Works and Utilities Year of analysis 2009 Benefits CCRWWTP Facilities Plan Escalation rate 5.00% Capital costs Life Cycle Alternative Cost Analysis ($000s) Discount rate 4.00% Running costs Alternative 3 - LOS 2 Year Expressed in 2009 dollars, unescalated -- thousands of dollars Phase 1 37,629 37,629 37,629 37,629 37,629 37,629 Phase 2 22,393 22,393 22,393 22,393 22,393 Phase Phase 4 7,598 7,598 7,598 7,598 7,598 Total capital outlays 37,629 37,629 37,629 37,629 37,629 37,629 22,393 22,393 22,393 22,393 22, ,598 7,598 7,598 7,598 7,598 Puget Sound Conv Loading Benefit 2 Total benefits Energy ,098 1,125 1,153 1,180 1,207 1,234 1,261 1,288 1,316 1,343 1,370 1,397 1,424 1,451 1,478 1,506 1,533 1,560 1,587 1,614 1,641 1,669 1,696 1,723 1,750 Labor 1,082 1,082 1,082 1,082 1,082 1,082 1,201 1,220 1,240 1,260 1,279 1,299 1,319 1,339 1,358 1,378 1,398 1,418 1,437 1,457 1,477 1,496 1,516 1,536 1,556 1,575 1,595 1,615 1,634 1,654 1,674 Maint Equipment Chemical ,000 1,147 1,295 1,442 1,589 1,737 1,884 2,032 2,179 2,326 2,474 2,621 2,768 2,916 3,063 3,210 3,358 3,505 3,652 3,800 Total running costs 1,739 1,739 1,739 1,739 1,739 1,739 2,742 2,940 3,137 3,334 3,531 3,728 3,925 4,123 4,320 4,517 4,714 4,911 5,109 5,306 5,503 5,700 5,897 6,094 6,292 6,489 6,686 6,883 7,080 7,278 7,475 Conventional Effluent ,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 PEC Discharge ,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 3,178 Change in Operating Costs Odor Compliance Total risk costs ,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 9,133 R&R cost 1 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 Total refurbishments 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 2,258 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 3,377 Net Benefit/(cost) (39,368) (39,368) (39,368) (39,368) (39,368) (41,994) (5,368) (5,566) (5,763) (5,960) (6,157) (6,354) (6,551) (6,749) (6,946) (29,536) (39,205) (39,402) (39,600) (39,797) (17,601) (18,164) (18,361) (18,559) (18,756) (18,953) (26,382) (26,579) (26,776) (26,973) (27,170) Expressed in escalated dollars with sensitivity adjustments Phase 1 39,510 41,486 43,560 45,738 48,025 50,426 Phase 2 48,882 51,326 53,892 56,587 59,416 Phase 3 1,072 1,125 1,181 1,241 1,303 Phase 4 28,367 29,785 31,275 32,838 34,480 Total capital outlays 39,510 41,486 43,560 45,738 48,025 50,426 48,882 51,326 53,892 56,587 59,416 1,072 1,125 1,181 1,241 1,303 28,367 29,785 31,275 32,838 34,480 Puget Sound Conv Loading ,042 1,094 1,148 1,206 1,266 1,330 1,396 1,466 1,539 1,616 1,697 1,782 1,871 Benefit 2 Total benefits ,042 1,094 1,148 1,206 1,266 1,330 1,396 1,466 1,539 1,616 1,697 1,782 1,871 Energy ,545 1,663 1,788 1,922 2,064 2,216 2,378 2,551 2,735 2,931 3,140 3,362 3,599 3,851 4,119 4,404 4,708 5,031 5,374 5,740 6,128 6,541 6,980 7,446 7,942 Labor 1,136 1,193 1,253 1,315 1,381 1,450 1,689 1,803 1,924 2,052 2,188 2,333 2,487 2,650 2,824 3,008 3,204 3,411 3,632 3,866 4,114 4,377 4,657 4,953 5,268 5,601 5,955 6,330 6,728 7,149 7,596 Maint Equipment ,009 1,072 1,139 Chemical ,149 1,458 1,796 2,164 2,564 2,998 3,470 3,981 4,534 5,134 5,781 6,481 7,236 8,050 8,928 9,873 10,891 11,986 13,163 14,427 15,785 17,243 Total running costs 1,826 1,917 2,013 2,114 2,220 2,330 3,859 4,343 4,866 5,431 6,039 6,695 7,402 8,163 8,981 9,860 10,805 11,820 12,909 14,078 15,331 16,674 18,114 19,655 21,306 23,072 24,962 26,983 29,144 31,453 33,920 Conventional Effluent ,713 13,348 14,016 14,717 15,452 16,225 17,036 17,888 18,783 19,722 20,708 21,743 22,830 23,972 25,170 PEC Discharge ,284 7,648 8,031 8,432 8,854 9,297 9,761 10,249 10,762 11,300 11,865 12,458 13,081 13,735 14,422 Change in Operating Costs ,018 1,069 1,122 1,179 1,238 1,299 Odor Compliance Total risk costs ,037 1,089 1,144 1,201 1,261 1,324 20,932 21,979 23,078 24,231 25,443 26,715 28,051 29,453 30,926 32,472 34,096 35,801 37,591 39,471 41,444 R&R cost 1 3,026 3,177 3,336 3,502 3,678 3,861 4,055 4,257 4,470 4,694 4,928 7,741 8,128 8,535 8,961 9,409 9,880 10,374 10,892 11,437 12,009 12,609 13,240 13,902 14,597 15,327 Total refurbishments 3,026 3,177 3,336 3,502 3,678 3,861 4,055 4,257 4,470 4,694 4,928 7,741 8,128 8,535 8,961 9,409 9,880 10,374 10,892 11,437 12,009 12,609 13,240 13,902 14,597 15,327 Net escalated benefit/(cost) (41,336) (43,403) (45,573) (47,852) (50,245) (56,276) (7,554) (8,223) (8,940) (9,708) (10,531) (11,411) (12,354) (13,362) (14,440) (64,474) (89,859) (94,827) (100,066) (105,593) (49,035) (53,135) (56,397) (59,853) (63,513) (67,390) (98,495) (104,193) (110,214) (116,577) (123,301) Life cycle cost analysis PVs in 2009 (39,747) (40,129) (40,515) (40,904) (41,297) (44,476) (5,740) (6,008) (6,281) (6,558) (6,841) (7,128) (7,419) (7,716) (8,018) (34,423) (46,131) (46,809) (47,496) (48,191) (21,518) (22,421) (22,882) (23,350) (23,825) (24,307) (34,160) (34,746) (35,340) (35,943) (36,554) NPV as of 2009 (846,872) Appendix A, Page 1 of 1 Alt_3

7 From Summary Sheet: Risk adjustments (+/- percent): Pierce County Department of Public Works and Utilities Year of analysis 2009 Benefits CCRWWTP Facilities Plan Escalation rate 5.00% Capital costs Life Cycle Alternative Cost Analysis ($000s) Discount rate 4.00% Running costs Alternative 4 - LOS 3 Year Expressed in 2009 dollars, unescalated -- thousands of dollars Phase 1 39,367 39,367 39,367 39,367 39,367 39,367 Phase 2 28,632 28,632 28,632 28,632 28,632 Phase Phase 4 7,598 7,598 7,598 7,598 7,598 Total capital outlays 39,367 39,367 39,367 39,367 39,367 39,367 28,632 28,632 28,632 28,632 28, ,598 7,598 7,598 7,598 7,598 Puget Sound Conv Loading Renewable Water ,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 2,018 Total benefits 1,060 1,060 1,060 1,060 1,060 1,060 1,060 1,060 1,060 1,060 1,060 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 2,438 Energy ,108 1,136 1,164 1,192 1,219 1,247 1,275 1,303 1,331 1,358 1,386 1,414 1,442 1,469 1,497 1,525 1,553 1,581 1,608 1,636 1,664 1,692 1,719 1,747 1,775 Labor 1,082 1,082 1,082 1,082 1,082 1,082 1,236 1,257 1,278 1,300 1,321 1,342 1,364 1,385 1,407 1,428 1,449 1,471 1,492 1,513 1,535 1,556 1,578 1,599 1,620 1,642 1,663 1,684 1,706 1,727 1,749 Maint Equipment Chemical ,040 1,189 1,338 1,488 1,637 1,786 1,935 2,085 2,234 2,383 2,532 2,682 2,831 2,980 3,129 3,279 3,428 3,577 3,726 3,876 Total running costs 1,739 1,739 1,739 1,739 1,739 1,739 2,823 3,025 3,226 3,428 3,629 3,831 4,033 4,234 4,436 4,637 4,839 5,041 5,242 5,444 5,645 5,847 6,049 6,250 6,452 6,653 6,855 7,057 7,258 7,460 7,662 Conventional Effluent ,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 2,955 PEC Discharge ,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 2,887 Change in Operating Costs Odor Compliance Total risk costs ,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 6,133 R&R cost 1 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 Total refurbishments 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 2,362 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 3,794 Net Benefit/(cost) (41,106) (41,106) (41,106) (41,106) (41,106) (42,659) (4,376) (4,578) (4,779) (4,981) (5,182) (5,384) (5,586) (5,787) (5,989) (34,822) (40,959) (41,161) (41,362) (41,564) (13,134) (13,702) (13,904) (14,105) (14,307) (14,508) (21,942) (22,143) (22,345) (22,547) (22,748) Expressed in escalated dollars with sensitivity adjustments Phase 1 41,335 43,402 45,572 47,851 50,244 52,756 Phase 2 62,499 65,624 68,905 72,350 75,968 Phase 3 1,072 1,125 1,181 1,241 1,303 Phase 4 28,367 29,785 31,275 32,838 34,480 Total capital outlays 41,335 43,402 45,572 47,851 50,244 52,756 62,499 65,624 68,905 72,350 75,968 1,072 1,125 1,181 1,241 1,303 28,367 29,785 31,275 32,838 34,480 Puget Sound Conv Loading ,011 1,062 1,115 1,171 1,229 1,291 1,355 1,423 1,494 1,569 1,647 1,730 1,816 1,907 Renewable Water 1,082 1,136 1,192 1,252 1,315 1,380 1,449 1,522 1,598 1,678 1,762 4,625 4,856 5,099 5,354 5,621 5,902 6,198 6,507 6,833 7,174 7,533 7,910 8,305 8,721 9,157 Total benefits 1,421 1,492 1,567 1,645 1,727 1,813 1,904 1,999 2,099 2,204 2,314 5,588 5,867 6,161 6,469 6,792 7,132 7,488 7,863 8,256 8,669 9,102 9,557 10,035 10,537 11,064 Energy ,560 1,679 1,806 1,941 2,086 2,240 2,404 2,579 2,766 2,965 3,177 3,403 3,643 3,899 4,171 4,461 4,769 5,097 5,446 5,817 6,212 6,631 7,077 7,551 8,055 Labor 1,136 1,193 1,253 1,315 1,381 1,450 1,739 1,857 1,983 2,117 2,259 2,411 2,572 2,743 2,924 3,117 3,322 3,539 3,770 4,016 4,276 4,552 4,846 5,157 5,487 5,837 6,209 6,603 7,022 7,465 7,935 Maint Equipment ,053 1,120 1,190 Chemical ,208 1,523 1,868 2,242 2,650 3,093 3,573 4,094 4,658 5,268 5,927 6,639 7,408 8,237 9,130 10,092 11,127 12,241 13,438 14,724 16,105 17,588 Total running costs 1,826 1,917 2,013 2,114 2,220 2,330 3,972 4,469 5,005 5,583 6,207 6,880 7,604 8,383 9,222 10,123 11,091 12,131 13,247 14,444 15,728 17,104 18,579 20,158 21,848 23,658 25,593 27,663 29,876 32,241 34,768 Conventional Effluent ,773 7,112 7,468 7,841 8,233 8,645 9,077 9,531 10,007 10,508 11,033 11,585 12,164 12,772 13,411 PEC Discharge ,616 6,947 7,295 7,659 8,042 8,444 8,867 9,310 9,775 10,264 10,777 11,316 11,882 12,476 13,100 Change in Operating Costs Odor Compliance Total risk costs ,057 14,760 15,498 16,273 17,086 17,941 18,838 19,780 20,769 21,807 22,897 24,042 25,244 26,507 27,832 R&R cost 1 3,165 3,324 3,490 3,664 3,847 4,040 4,242 4,454 4,677 4,910 5,156 8,695 9,130 9,586 10,066 10,569 11,097 11,652 12,235 12,846 13,489 14,163 14,871 15,615 16,396 17,216 Total refurbishments 3,165 3,324 3,490 3,664 3,847 4,040 4,242 4,454 4,677 4,910 5,156 8,695 9,130 9,586 10,066 10,569 11,097 11,652 12,235 12,846 13,489 14,163 14,871 15,615 16,396 17,216 Net escalated benefit/(cost) (43,161) (45,320) (47,586) (49,965) (52,463) (57,168) (6,157) (6,763) (7,414) (8,113) (8,864) (9,669) (10,533) (11,458) (12,450) (76,012) (93,879) (99,058) (104,521) (110,282) (36,591) (40,082) (42,705) (45,491) (48,448) (51,587) (81,919) (86,805) (91,975) (97,445) (103,232) Life cycle cost analysis PVs in 2009 (41,501) (41,900) (42,303) (42,710) (43,121) (45,180) (4,679) (4,942) (5,209) (5,481) (5,758) (6,039) (6,326) (6,617) (6,913) (40,583) (48,195) (48,898) (49,610) (50,331) (16,057) (16,913) (17,327) (17,747) (18,174) (18,607) (28,411) (28,947) (29,492) (30,044) (30,604) NPV as of 2009 (798,621) Appendix A, Page 1 of 1 Alt_4

8 From Summary Sheet: Risk adjustments (+/- percent): Pierce County Department of Public Works and Utilities Year of analysis 2009 Benefits CCRWWTP Facilities Plan Escalation rate 5.00% Capital costs Life Cycle Alternative Cost Analysis ($000s) Discount rate 4.00% Running costs Alternative 5 - LOS 4 Year Expressed in 2009 dollars, unescalated -- thousands of dollars Phase 1 51,169 51,169 51,169 51,169 51,169 51,169 Phase 2 149, , , , ,405 Phase Phase 4 Total capital outlays 51,169 51,169 51,169 51,169 51,169 51, , , , , , Puget Sound Conv Loading Renewable Water ,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 14,810 Total benefits 1,086 1,086 1,086 1,086 1,086 1,086 1,086 1,086 1,086 1,086 1,086 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 15,291 Energy ,108 1,136 1,164 1,192 1,219 1,247 1,275 1,303 1,331 1,358 1,386 1,414 1,442 1,469 1,703 1,936 2,170 2,403 2,637 2,870 3,104 3,337 3,571 3,804 4,038 Labor 1,082 1,082 1,082 1,082 1,082 1,082 1,236 1,257 1,278 1,300 1,321 1,342 1,364 1,385 1,407 1,428 1,449 1,471 1,492 1,513 1,610 1,707 1,804 1,901 1,998 2,095 2,192 2,289 2,386 2,483 2,580 Maint Equipment Chemical ,040 1,189 1,338 1,488 1,637 1,786 1,935 2,085 2,234 2,476 2,717 2,959 3,201 3,443 3,685 3,926 4,168 4,410 4,652 4,893 Total running costs 1,739 1,739 1,739 1,739 1,739 1,739 2,823 3,025 3,226 3,428 3,629 3,831 4,033 4,234 4,436 4,637 4,839 5,041 5,242 5,444 6,031 6,617 7,204 7,791 8,378 8,964 9,551 10,138 10,724 11,311 11,898 Conventional Effluent Risk cost 2 Risk cost 4 Risk cost 5 Total risk costs R&R cost 1 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 Total refurbishments 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 3,070 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 10,540 Net Benefit/(cost) (52,908) (52,908) (52,908) (52,908) (52,908) (54,900) (4,815) (5,016) (5,218) (5,420) (5,621) (5,823) (6,024) (6,226) (6,428) (156,034) (149,493) (149,695) (149,896) (150,098) (1,280) (2,233) (2,820) (3,406) (3,993) (4,580) (4,800) (5,387) (5,974) (6,560) (7,147) Expressed in escalated dollars with sensitivity adjustments Phase 1 53,727 56,413 59,234 62,196 65,306 68,571 Phase 2 326, , , , ,416 Phase 3 1,072 1,125 1,181 1,241 1,303 Phase 4 Total capital outlays 53,727 56,413 59,234 62,196 65,306 68, , , , , ,416 1,072 1,125 1,181 1,241 1,303 Puget Sound Conv Loading ,102 1,157 1,215 1,276 1,340 1,407 1,477 1,551 1,629 1,710 1,796 1,885 1,980 2,079 2,183 Renewable Water 1,082 1,136 1,192 1,252 1,315 1,380 1,449 1,522 1,598 1,678 1,762 33,945 35,643 37,425 39,296 41,261 43,324 45,490 47,765 50,153 52,660 55,293 58,058 60,961 64,009 67,210 Total benefits 1,455 1,528 1,604 1,684 1,769 1,857 1,950 2,047 2,150 2,257 2,370 35,048 36,800 38,640 40,572 42,601 44,731 46,967 49,316 51,782 54,371 57,089 59,944 62,941 66,088 69,392 Energy ,560 1,679 1,806 1,941 2,086 2,240 2,404 2,579 2,766 2,965 3,177 3,403 3,643 3,899 4,744 5,665 6,665 7,751 8,930 10,206 11,588 13,083 14,699 16,443 18,324 Labor 1,136 1,193 1,253 1,315 1,381 1,450 1,739 1,857 1,983 2,117 2,259 2,411 2,572 2,743 2,924 3,117 3,322 3,539 3,770 4,016 4,486 4,994 5,542 6,131 6,766 7,449 8,183 8,972 9,820 10,730 11,706 Maint Equipment ,015 1,117 1,228 1,346 1,473 1,609 1,756 Chemical ,208 1,523 1,868 2,242 2,650 3,093 3,573 4,094 4,658 5,268 5,927 6,897 7,949 9,089 10,324 11,659 13,101 14,659 16,340 18,152 20,104 22,207 Total running costs 1,826 1,917 2,013 2,114 2,220 2,330 3,972 4,469 5,005 5,583 6,207 6,880 7,604 8,383 9,222 10,123 11,091 12,131 13,247 14,444 16,801 19,357 22,127 25,126 28,369 31,874 35,658 39,741 44,143 48,886 53,993 Conventional Effluent Risk cost 2 Risk cost 4 Risk cost 5 Total risk costs R&R cost 1 4,114 4,320 4,536 4,763 5,001 5,251 5,513 5,789 6,079 6,383 6,702 24,159 25,367 26,635 27,967 29,365 30,833 32,375 33,994 35,693 37,478 39,352 41,320 43,386 45,555 47,833 Total refurbishments 4,114 4,320 4,536 4,763 5,001 5,251 5,513 5,789 6,079 6,383 6,702 24,159 25,367 26,635 27,967 29,365 30,833 32,375 33,994 35,693 37,478 39,352 41,320 43,386 45,555 47,833 Net escalated benefit/(cost) (55,553) (58,331) (61,247) (64,310) (67,525) (73,571) (6,775) (7,411) (8,095) (8,828) (9,614) (10,457) (11,360) (12,327) (13,362) (340,603) (342,641) (360,258) (378,780) (398,254) (3,565) (6,531) (8,660) (10,985) (13,522) (16,284) (17,921) (21,117) (24,588) (28,353) (32,434) Life cycle cost analysis PVs in 2009 (53,416) (53,930) (54,449) (54,972) (55,501) (58,144) (5,148) (5,415) (5,687) (5,964) (6,245) (6,531) (6,822) (7,119) (7,420) (181,851) (175,903) (177,833) (179,785) (181,758) (1,565) (2,756) (3,514) (4,286) (5,072) (5,873) (6,215) (7,042) (7,884) (8,742) (9,615) NPV as of 2009 (1,346,458) Appendix A, Page 1 of 1 Alt_5