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COST ESTIMATES FOR THE TUTU WELLS SITE (SRA 2 - SRA 5 AND GRA 1 - GRA 4) PREPARED BY de maximis, Inc. Dated July 1996 (Revised Cost Estimates using 5% Discount Rate) TUT COS 0719 *65061* 65061 Table 5-4R. Cost Estimate - SRA 2 (Institutional Controls/Capp PAPJIAI, COSTS Table 5-4R, Page 1 of 2 no,), TuTu Wells Site, St. Thomas, U.S. Virgin Islands. Deed Restrictions 1 L.S. $10,000 910,000 Pavement Restoration & Capping Curriculum Center 27 S.Y. $20 5540 Texaco TuTu Service Station 25 S.Y. $20 0500 Esso TuTu Service Station 41 S.Y. $20 $820 Western Auto 117 S.Y. $20 «2,340 O'Henry Dry Cleaners 44 S.Y. $20 $880 Subtotal . . Administrati Engineering Constructor Contingency TOTAL CAP TOTAL CAPITAL COST - SRA 2 . . . . . . . . . . . . . . . . . . . . . . . . TOTAL CAPITAL COST • SCf AT ESSO (In-Situ $VE) . . . . . . . . . TOTAL CAPITAL COST- SCP AT TEXACO (In-SiW SVE) . . . . . . TOTAL CAPITAL COSTS - SKA 2 AND SCPs ............... O&M (ANNUAL) COSTS - SRA 2 .................................. $ 15,060 on & Legal Co$ts (20%) ................. $3,016 Design (10%) ........................ $ 1,508 » Supervision (15%) .................... $2.262 (25%) ............................. #3,770 ITAL COST 925,636 SAY $28,000 ................................. (26,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $150,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $135,000 ................................ $311,000 Pavement & Cap Maintenance (Sealing, Patching) Curriculum Center 27 S.Y. $3 881 Texaco TuTu Service Station 25 S.Y. $3 $75 Esso TuTu Service Station 41 S.Y. $3 4123 Western Auto 117 S.Y. $3 $351 O'Henry Dry Cleaners 44 S.Y. $3 $132 Subtotal Administrati Contingency TOTAL AN* O&M (ANNUAL) PRESENT WORTH - SRA 2, YEAR 30 (5% discour Pavement & Cap Replacement 1 L.S O&M PRESENT WORTH - SRA 2, YEAR 15 (5% discount rate) . . TOTAL O&M PRESENT WORTH • SKA 2 ................... $762 on & Legal Costs (15%) $114 >(25%) $191 IUAL O&M COSTS t 1.067 it rate) ............................. $1 6,405 $5,000 $5,000 ................................... $2,406 .................................. (18,810 SAY $19,000 Table 5-4R, Page 2 of 2 O&M (ANNUAL) pQSTS (TO YEAR 5) - SCPs (continued) SCPatEsso 1 L.S. $20,000 SCP at Texaco 1 L.S. $67,000 O&M (ANNUAL) PRESENT WORTH - SCPs, YEAR 5 (5% discount nt«) . . . . . . . . . . . . . TOTAL O&M PRESENT WORTH - SCPs (In-SItu SVE) TOTAL O&M PRESENT WORTH - SRA 2 AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . GRAND TOTAL • SRA 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GRAND TOTAL • SRA 2 AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAY $20,000 $67,000 $376,658 $377,000 $396,000 . $45,000 $707,000 L.S. Lump Sum. C.Y. Cubic Yard. S.Y. Square Yard, SRA Soil Remedial Alternative. SCP Source Control Plan. O&M Operation and Maintenance. Source (design and O&M assumptions) used for cost estimate is presented in Appendix C. Tutu Wellfield Site FS Addendum Revised 7/96 By de maxtmla. Inc. 0721 FILE: 30a»\TA8LK-4 Table 5-5R. Cost Estimate - SRA 3 (Institutional Controls/CappIno./ln-Sltu SVE (Soil Disposal), TuTu Wells Site, St. Thomas, U.S. V\tg\n Islands. Table 5-5R, Page 1 of 2 and Bedrockl/Excavatlon and Off-Site CAPTIAL COSTS Deed Resections 1 Pavement Restoration & Capping Curriculum Center 5 Excavation 5 Off-Site Disposal 5 Excavated coll sample analysis 1 Western Auto Excavation 1 8 1 Off-Site Disposal 146 Site Restoration 181 Excavated coll sample analysis 9 In-SItu SVE Systems Curriculum Center (in bedrock) 1 O'Honry Dry Cleaners (in soils) 1 O'Henry Dry Cleaners (in bedrock) 1 TOTAL CAPITAL COST - SKA 3 . . . . . . . . . . . . . . . TOTAL CAPITAL COST • SCPATESSO lin-Sliu SVE) TOTAL CAPITAL COST - SCPAT TE)(ACO {In-SHu S TOTAL CAPITAL COSTS - SM 3 AND SCPs ...... O&M (ANNUAL) COSTS - S.RA 3 In-Situ SVE Systems Curriculum Center (in bedrock) 1 O'Henry Dry Cleaners (in soils) 1 O'Henry Dry Cleaners [in bedrock) 1 LS. si 0,000 * 10,000 C.Y. C.Y. C.Y. EA. C.Y. C.Y. C.Y. EA. $70 $350 $2,230 $11,150 $50 $250 $1,500 $1,500 $70 $12,670 $2,230 $325,580 $50 $9,050 $1,500 $13,500 L.S. $170,000 $170,000 L.S. $50,000 $50,000 L.S. $130,000 $130,000 Subtotal ................... Administration & Legal Costs (20% Engineering Design (fO%l . . . . . . Construction Supervision (15%) Contingency (25%) . . . . . . . . . . . TOTAL CAPITAL COST V£).. ...................... LS. L.S. L.S. . . . . . . . . . . . . . . . . $734,050 t . . . . . . . . . . . . . . . $146,810 . . . . . . . . . . . . . . . . . $73,405 . . . . . . . . . . . . . . . . 9110,108 . . . . . . . . . . . . . . . . $183.513 91,247,886 SAY $1.248.000 . . . . . . . . . . . . . . . $1,248,000 . . . . . . . . . . . . . . . . $150.000 . . . . . . . . . . . . . . . . $135,000 ............... $1.533.000 $35,000 $35,000 $14,500 $14,500 S35.OOO $35,000 Subtotal 984,500 Administration & Legal Costs (15%) $12,675 Contingency (25%l $21.125 TOTAL ANNUAL O&M COST 9118.300 TUT OO8 O722 Table 5-5R. Page 2 of 2 "rt T' -v "v I ~ ^*i'r~-'"-' O&M (ANNUAL) COSTS (TO YEAR 5) - SRA 3 (continued) O&M (ANNUAL) PRESENT WORTH - SRA 3, YEAR 1 TO 5 (5% discount rate) .................. $512,168 O&M [ANNUAL) COSTS (YEARS 6 TO 301 • SRA 3 hvSitu SVE Systems Curriculum Center (in bedrock) 1 L.S, $35,000 $35,000 O'Henry Dry Cleaners (in bedrock) 1 L.S. $35,000 $35,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $70.000 Administration & Legal Costs (15%l ................ 910,500 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 917,500 ________________________________TOTAL ANNUAL O&M COST______________ 998,000 O&M (ANNUAL) PRESENT WORTH - SRA 3, YEAR 6 TO 30 (5% discount r a t e ) . . . . . . . . . . . . . . . . $ f ,082,200 EQUIPMENT INSTALLATION AND MATERIAL REPLACEMENT - $F\A 3 Major Equipment 1 L.S. $160,000 $160,000 O&M PRESENT WORTH (YEAR 15) 5% discount rale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $76,960 Minor Equipment 1 L.S. $5,000 $5,000 O&M PRESENT WORTH (YEARS 5, 10, 15, 20, 25) 5% discount rate. ........................ $12.750 TOTAL O&M PRESENT WORTH - SRA 3 ............................................ $1,685,000 Q&M (ANNUAL! COSTS (TO YEAR 51 - SCP« SCPatEsso 1 L.S. $20,000 $20,000 SCP at Texaco 1 L.S. $67,000 $67,000 _____O&M (ANNUAL) PRESENT WORTH • SCPs, (YEAR 5) 5% discount rate ............ ... ........ $376,658 TOTAL O&M PRESENT WORTH - SCPs (In-Situ SVEJ SA Y 9377,000 TOTAL O&M PRESENT WORTH - SRA AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92,062,000 GRAND TOTAL - SRA 3 .............................................................. $2,933,000 GRAND TOTAL • SRA AND SCPs ....................................................... 93,696,000 L.S. Lump Sum. EA. Each. S.Y. Square Yard. C.Y. Cubic Yard. SVE Soil Vapor Extraction. O&M Operation and Maintenance. SRA Soil Remediation Alternative. SCP Source Control Plan. Source (design and O&M assumptions) used for cosi estimate is presented in Appendix C. IN CO Tutu Wellfiold Site FS Addendum Revised 7/96 By d« maxlmls. Inc. FILE: 30B9\TABLC6-5. Table 5-6R. Cost Estimate - SRA 4 (Institutional Controis/Capping/Ex-Situ SVE/ln-Situ SVE/Excavation Disposal), TuTu Wells Site. St. Thomas, U.S. Virgin Islands. Table 5-6R, Page 1 of 2 and On-Site ||f|f||ff!|l!jiTEMil CAPITAL COSTS T :;.• ; •;. : i' ¥? '!•• ' ^IjOtjy ^:^0.!5ili ;|;1| :i|0til;|;p(s|l|| Deed Restrictions 1 L.S. $10,000 $10,000 Pavement Restoration & Capping Western Auto Excavation 181 C.Y. $70 $12,670 Off-Site Disposal 146 C.Y. $2,230 $325,580 Site Restoration 181 C.Y. $50 $9,050 Excavated soil sample analysis 9 EA. $1,500 $13,500 Ex-Situ SVE Systems Curriculum Center 1 L.S. $10,000 $10,000 O'Henry Dry Cleaners 1 L.S. $35,000 $35,000 In-Situ SVE Systems Curriculum Center (in bedrock) 1 L.S. $170,000 $170,000 O'Henry Dry Cleaners (in bedrock) 1 L.S. $130,000 $130,000 Subtotal . . Administrate Engineering L Construction Contingency TOTAL CAPi COST TOTAL CAPITAL COST - SRA 4 . . . . . . . . . . . . . . . . . . . . . . . . . TOTAL CAPITAL COST - SCPAT ESSO (In-Situ SVEI . . . . . . . . . . TOTAL CAPITAL COST - SCP AT TEXACO (In-Situ SVE). . . . . . . . TOTAL CAPITAL COSTS - SRA 4 AND SCPs . . . . . . . . . . . . . . . . O&M (ANNUAL) COSTS - SRA 4 Ex-Situ SVE Systems Curriculum Center 1 L.S. O'Henry Dry Cleaners 1 L.S. In-Situ SVE Systems Curriculum Center (in bedrock) 1 L.S. O'Henry Dry Cleaners (in bedrock) 1 L.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $715,800 in & Legal Costs (20%) . . . . . . . . . . . . . . $143, 160 design (10%) . . . . . . . . . . . . . . . . . . . . . . $71,580 Supervision (15%) . . . . . . . . . . . . . . . . . $107,370 (25%l . . . . . . . . . . . . . . . . . . . . . . . . . . $178,950 TAL $1,216,860 SAY $1,217,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,217,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $150,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $135,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,502,000 $12,000 $12,000 $12,000 $12,000 $35,000 $35,000 $35,000 $35,000 Subtotal $94,000 A dministration & Legal Costs (15%) $14,100 Contingency (25%) $23,500 TOTAL (ANNUAL) O&M COSTS (YEARS 1 AND 2) - SRA 4 $131,600 TIT OO8 O724 Table 5-6R, Page 2 of 2 QUANTITY! O&M (ANNUAL) COSTS (YEARS 1 AND 2) - SRA 4 (continued) O&M PRESENT WORTH (Years 1 and 2) (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $251,803 In-Situ SVE Systems SAY . . . . . . . . $250,000 Curriculum Center (in bedrock) 1 L.S. $35,000 $35,000 O'Henry Dry Cleaners (in bedrock)_____1__________L.S._____________$35,000_________$35,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $70,000 Administration & Legal Costs (15%) . . . . . . . . . . . . . . . . $ 10,500 Contingency (25%l . . . . . . . . . . . . . . . . . . . . . . . . . . . . $17,500 TOTAL (ANNUAL) O&M COSTS (YEARS 3 TO 30) - SRA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $98,000 O&M PRESENT WORTH (Years 3 to 30) (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,318,977 SAY ........ $1,319,000 EQUIPMENT INSTALLATION AND MATERIAL REPLACEMENT - SRA 4 Major Equipment 1 L.S. $160,000 $160,000 O&M PRESENT WORTH (YEAR 15) 5% discount rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $76,960 Minor Equipment 1 L.S. $5,000 $5,00.0 O&M PRESENT WORTH (YEARS 5, 10, 15, 20, 25) 5% discount rate. . . . . . . . . . . . . . . . . . . . . . . . . $12,750 TOTAL O&M PRESENT WORTH - SRA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 1,660,490 SAY ....... $1,661,000 O&M (ANNUAL) COSTS (TO YEAR 5) - SCPs SCPatEsso 1 L.S. $20,000 $20,000 SCP at Texaco 1 L.S. $67,000 $67,000 O&M (ANNUAL) PRESENT WORTH - SCPs, (YEAR 5) 5% discount rate . . . . . . . . . . . . . . . . . . . . . . . $376,658 TOTAL O&M PRESENT WORTH - SCPs (tn-S/tu SVE) SAY . . . . . . . . . $377,000 TOTAL O&M PRESENT WORTH - SRA 4 AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $2,038,000 GRAND TOTAL - SRA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $2,878,000 GRAND TOTAL - SRA AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $3,540,000 L.S. Lump Sum. EA. Each. S.Y. Square Yard. Tutu Wellfield Site C.Y. Cubic Yard. FS Addendum SVE Soil Vapor Extraction. Revised 7/96 by O&M Operation and Maintenance. de maximls, inc. SRA Soil Remediation Alternative. SCP Source Control Plan. Source (design and O&M assumptions) used for cost estimate is presented in Appendix C. FILE: 3089\TABLE 5-6. OS O725 Table 5-7R, Page 1 of 2 Table 5-7R. Cost Estimate - SRA 5 (Institutional Controls/Capping/ln-Situ SVE [BedrockJ/Excavation and Off-Site Disposal), TuTu Wells Site, St. Thomas, U.S. Virgin Islands.___________________________________ ITEMS QUANTITY UNIT llJN'lT'COSTi CAPITAL COSTS Deed Restrictions Excavation Off-Site Disposal Site Restoration Excavated soil sample analysis In-Situ SVE Systems Curriculum Center O'Henry Dry Cleaners 1 305 270 305 16 L.S. C.Y. C.Y. C.Y. EA. L.S. L.S. $10,000 $70 $2,230 $50 $1,500 $170,000 $130,000 $10,000 $21,350 $602,100 $15,250 $24,000 $170,000 $130,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $972,700 Administration & Legal Costs (20%) . . . . . . . . . . . . . . $291,810 Engineering Design (10%l . . . . . . . . . . . . . . . . . . . . . . $97,270 Construction Supervision (15%) . . . . . . . . . . . . . . . . . $145,905 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . $243,175 TOTAL CAPITAL $1,750,860 ___________________________________COST_______________________SAY_____$1,750,000 TOTAL CAPITAL COST - SRA 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,750,000 TOTAL CAPITAL COST - SCP A T ESSO (In-Situ SVEI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $150,000 TOTAL CAPITAL COST - SCP AT TEXACO (In-Situ S V E ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 135,000 TOTAL CAPITAL COSTS - SRA 5 AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $2,035,000 O&M (ANNUAL) COSTS - SRA 5 In-Situ SVE Systems Curriculum Center (in bedrock) 1 L.S. $35,000 $35,000 O'Henry Dry Cleaners (in bedrock) 1 L.S. $35,000 $35,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $70,000 Administration & Legal Costs (15%) . . . . . . . . . . . . . . . . $10,500 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $17,500 TOTAL (ANNUAL) O&M COSTS _________________________________________________________________________$98,000 O&M PRESENT WORTH - SRA 5 {YEAR 30) 5% discount rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,319,000 EQUIPMENT INSTALLATION AND MATERIAL REPLACEMENT - SRA 4 Major Equipment 1 L.S. $160,000 $160,000 O&M PRESENT WORTH (YEAR 1 5) 5% discount rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $76,960 Minor Equipment 1 L.S. $5,000 $5,000 O&M PRESENT WORTH (YEARS 5, 10, 15, 20, 25) 5% discount rate. . . . . . . . . . . . . . . . . . . . . . . . . $12,750 TOTAL O&M PRESENT WORTH - SRA 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 1,408,710 SAY . . . . . . . $1,409,000 TUT OO8 O72& Table 5-7R, illlliillilllli;:;i:;i:;ill^^ ::;;:;:;;::;':: l!l::::i:|yK::; ^ttMlitM Illillliilft^ !lllllll;.P.!NK :•;;? ;:.; •,• iy;i*<.; : : *;.:: .:-,: •; ;; wiMx.; &x$.imiim; iMKimmittSwAV ;"««;•;*;: ; : jm*wm*m \mm&ft^fip?t£*m$m mmi&^^xfi&ywwx f&wtilyttX m^WjWSMtQwZwm ::;?;s:S5::s:*^^At;:CQSli;;;;;s;:j:i- O&M (ANNUAL) COSTS (TO YEAR 5) - SCPs (continued) SCPatEsso 1 L.S SCP at Texaco 1 L.S. O&M (ANNUAL) PRESENT WORTH - SCPs, (YEAR 5) 5% c TOTAL TOTAL GRAND GRAND O&M PRESENT WORTH - SCPs fin-Situ SVE) O&M PRESENT WORTH - SRA 5 AND SCPs . . . . . . . . . . . TOTAL • SRA 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOTAL - SRA AND SCPs . . . . . . . . . . . . . . . . . . . . . . . . $20,000 $20,000 $67,000 $67,000 iscount rate . . . . . . . . . . . . . . . . . . . . . . . $376,660 SAY $377,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,786,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $3, 159,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $3,821,000 LS. Lump Sum. EA. Each. S.Y. Square Yard. C.Y. Cubic Yard. SVE Soil Vapor Extraction. O&M Operation and Maintenance. SRA Soil Remediation Alternative. SCP Source Control Plan. Source (design and O&M assumptions) used for cost estimate is presented in Appendix C. Tutu Wellfield Site FS Addendum Revised 7/96 By de maximis, inc. FILE: 3089UABIE 5-7. TUT OOS O727 Table 5-8R, Page 1 of 1 Table 5-8R. Cost Estimate - GRA 1 (No Action/Institutional Controls), TuTu Wells Site, St. Thomas, U.S. Virgin Islands. CAPITAL COSTS Deed Restrictions 1 LS. $10,000 $10,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 10,000 Administration & Legal Costs (20%} . . . . . . . . . . . . . . . . $2,000 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $2,500 TOTAL CAPITAL COST - TREATMENT $14,500 TOTAL CAPITAL COST - GRA 1 SAY . . . . . . . . . $15,000 O&M (ANNUAL! COSTS Groundwater Monitoring 2 Sample rounds/year $32,000 $64,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $64,000 Administration & Legal Costs (15%) . . . . . . . . . . . . . . . . . $9,600 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 16,000 TOTAL (ANNUAL) O&M COSTS____________________________________________________$89,600 ___ O&M PRESENT WORTH, YEAR 30 (5% discount rate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,377,372 SAY . . . . . . . $1,377,000 TOTAL O&M PRESENT WORTH - GRA 1 $1,377,000 GRAND TOTAL -GRA 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,392,000 GRA Groundwater Remedial Alternative. L.S. Lump Sum. O&M Operation and Maintenance. Source (design and O&M assumptions) used for cost estimates are presented in Appendix C. Tutu Wellfield Site FS Addendum Revised 7/96 by de maximis. inc. 3089\TABLE 5-8.wpd TUT OOS O72I Table 5-9R, Page 1 of 2 Table 5-9R. Cost Estimate - GRA 2 (Institutional Controls/Source Containment/POET Systems/Treatment/Discharge), TuTu .Wells Site, St, Thomas, U.S. Virgin Islands. CAPITAL COSTS Deed Restrictions Site Preparation/Mobilization 1 Well Decommissioning 1 Site Acquisition nfrm^mmmm^\j^nm^&m:mrmm^ ^^'^^^••^•^M^^i§^^ '£'^':-:t;*A\-- ;^:0!'::'-;;:::::.:^:::::-:::-:::::::::::'::::':'!:;':v;;.::-:::::;:::;;;::::v:::;:':':::::-: O f^:. i'i' vi'i-'- .'"''^i^'.-X''^"''^;-'^'^;^'^:^':^^'^'-'''^'-1 ''.'!• -"' :':': :: ::- '•'/.'.' • L.S. $10,000 $10,000 L.S. $40,000 $40,000 2 EA. $1,000 $12,000 Groundwater Extraction System Recovery Well Installation Submersible Pumps (installed) 2 EA. $38,000 $76,000 • 4"-6" Double-Walled PVC Pipe 2 EA. $6,000 $12,000 (installed, with leak detection) 2,300 L.F. $65 $149,500 Pre-Treatment (P04) 1 Low Profile Air Stripper (installed) Thermal Oxidizer (installed, if required) Liquid Phase Carbon Treatment System (installed, if required) L.S. $1 5,000 $15,000 L.S. $25,000 $25,000 L.S. $185,000 $185,000 L.S. $35,000 $35,000 Process Pumps Piping (installed) 4 EA. $5,000 $20,000 200 L.F. $10 $2,000 Discharge Pumps Piping (installed) 2 EA. $10,000 $20,000 50 L.F. $30 $1,500 Treatment Building (installed) 600 S.F. $60 $36,000 Electric Electric Panel and Plant Wiring 1 L.S. $50,000 $50,000 Conduit to Wells 2,300 L.F. $2 $4,600 POET Systems (includes new well pump) GAC Unit (1-10 gpm) 5 EA. $5,000 $25,000 General Contractor TOTAL CAPITAL COST - GRA 2 TOTAL CAPITAL COST - SCP AT ESSO TOTAL CAPITAL COST - SCP AT TEXACO TOTAL CAPITAL COST - GRA 2 AND SCPs L.S. $80,000 $80,000 Subtotal . . . . . . . . . . . . . . . . . . . . Administration & Legal Costs (20%) Engineering Design (10%) . . . . . . . Construction Supervision (15%) . . . Contingency (25%) . . . . . . . . . . . . TOTAL CAPITAL COST - TREA TMENT . . . . . . . . . . . . . . $823,600 . . . . . . . . . . . . . . $164,720 . . . . . . . . . . . . . . . . $82,360 . . . . . . . . . . . . . . $123,450 . . . . . . . . . . . . . . $205,900 $1,400,120 $1,401,000 $100,000 $865,000 $2,366,000 TUT OOS 0729 Table 5-9R, Page 2 of 2 O&M (ANNUAL) COSTS Groundwater Monitoring 2 Electricity (Avg) 240,000 Chemical Usage (P04) 1 Supplemental Fuel (Propane) 1 Carbon Replacement 2,000 Carbon Replacement (POET) 1,000 System Operation (one person - full time) 1 POET System Monitoring (Avg) 60 Treatment System Monitoring (Avg) 12 Sample rounds/year Kilowatt-hour L.S. L.S. Pounds of carbon Pounds of carbon L.S. EA. EA. $32,000 $0.10 $10,000 $25,000 $6 $6 $35,000 $1,000 $1,000 $64,000 $24,000 $10,000 $25,000 $12,000 $6,000 $35,000 $60,000 $12,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $248,000 Administration & Legal Costs 115%} . . . . . . . . . . . . . . . . $37,200 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $62,000 TOTAL (ANNUAL) O&M COSTS $347,200 _____O&M PRESENT WORTH - GRA 2, YEAR 30 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $5,377,000 EQUIPMENT REPLACEMENT - GRA 2 Major Equipment Replacement 1 L.S. $260,000 $260,000 _____O&M PRESENT WORTH, YEAR 15 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $125,060 Minor Equipment Replacement 1 L.S. $25,000 $25,000 _____O&M PRESENT WORTH, YEARS 5. 10. 15, 20, 25 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . $63,765 TOTAL O&M PRESENT WORTH GRA 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $5,526,000 O&M (ANNUAL) COSTS (TO YEAR 51 - SCPs SCPatEsso 1 L.S. $60,000 $60,000 SCP at Texaco__________________1 ______L.S._____________$101,000________$101,000 TOTAL ANNUAL O&M COST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $161,000 O&M PRESENT WORTH - SCPs, YEAR 5 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $697.000 O&M PRESENT WORTH - GRA 2 and SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $6,223,000 GRAND TOTAL - GRA 2 GRAND TOTAL - GRA 2 AND SCPs $6,927,000 $8,589,000 L.F. Linear Feet. S.F. Square Feet. L.S. Lump Sum. EA. Each. gpm Gallons Per Minute. POET Point-of-Entry Treatment. GAC Granular Activated Carbon. P04 Orthophosphates. O&M Operation and Maintenance. PVC Polyvinyl Chloride. SCP Source Control Plan. GRA Groundwater Remedial Alternative. Source (design and O&M assumptions) for cost estimates is presented in Appendix C. Tutu Wellfield Site FS Addendum Revised 7/96 by de maximis, inc. TUT 008 0730 Table 5-10, Page 1 of 2 Table 5-1 OR. Cost Estimate - GRA 3 (Institutional Controls/Plume Containment/Treatment/Discharge), TuTu Wells Site, St. Thomas, U.S. Virgin Islands. CAPJIALCjOSIS. Deed Restrictions 1 Site Preparation/Mobilization 1 ITITV/i • SSffSiiii-'W? f'¥.i'. I IMIT :xiyi?J;:.::<:i:i:H:H :i?3™::i:f |:i 1. 1 .W'Y g?. fm-M iWv ;: is* VlMU ••• wmWW^m^ SisssifUA :;:: W'Miif J:ixv.': ;::'l:;i;;; :• :-; ?•:?' •' • • '•••• : 'i' '• '•''-:'. tiMtiS&:8*:. :$Smfipf] ;¥;•?• stiis is. M -mM WMi •& i '- •• - : i: •••K !^:M!--'MSS msmfvx L.S. $10,000 $10,000 L.S. $40,000 $40,000 Well Decommissioning 17 EA. $1,000 $17,000 Site Acquisition 1 L.S. $25,000 $25,000 Groundwater Extraction System Recovery Well Installation Submersible Pumps (installed) 3 EA. $38,000 $114,000 4"-6" Double-Walled PVC Pipe 3 EA. $6,000 $18,000 (installed, with leak detection) 3,300 L.F. $65 $214,500 Pre-Treatment (P04) 1 Low Profile Air Svipper (installed) Thermal Oxidizer (installed, if required) 1 Liquid Phase Carbon Treatment System (installed, if required) 1 L.S. $1 5,000 $15,000 L.S. $25,000 $25,000 L.S. $185,000 $185,000 L.S. $35,000 $35,000 Process Pumps Piping (installed) 4 EA. $5,000 $20,000 200 L.F. $10 $2,000 Discharge Pumps Piping (installed) 2 EA. $1 50 L.F. Treatment Building (installed) 600 S.F. 0,000 $20,000 $30 $1,500 $60 $36,000 Electric Electric Panel and Plant Wiring 1 L.S. $50,000 $50,000 Conduit to Wells 3,300 L.F. $2 $6,600 General Contractor 1 TOTAL CAPITAL COST - GRA 3 TOTAL CAPITAL COST - SCP A T ESSO TOTAL CAPITAL COST - SCP AT TEXACO TOTAL CAPITAL COST - GRA 3 AND SCPs L.S. $90,000 $90,000 Subtotal . . . . . . . . . . . . . . . . . . . . Administration & Legal Costs (20%) Engineering Design (10%) . . . . . . . Construction Supervision (1 5%) . Contingency (25%) . . . . . . . . . . . . TOTAL CAPITAL COST - TREA TMENT . . . . . . . . . . . . . . $924,600 . . . . . . . . . . . . . . $184,920 . . . . . . . . . . . . . . . $92,460 . . . . . . . . . . . . . . $138,690 . . . . . . . . . . . . . . $231,150 $1,571,820 $1,572,000 $100,000 $865,000 $2,537,000 TUT OOS O731 Table 5-10, Page 2 of 2 O&M (ANNUAL) COSTS - GRA 3 Groundwater Monitoring 2 Electricity (Avg) 270,000 Chemical Usage (P04) 1 Supplemental Fuel (Propane) 1 Carbon Replacement 2,000 System Operation 1 (one person - full time) Treatment System Monitoring (Avg) 1 2 Sample rounds/year Kilowatt-hour L.S. L.S. Pounds of carbon L.S. EA. $32,000 $0.10 $10,000 $25,000 $6 $35,000 $1,000 $64,000 $24,000 $10,000 $25,000 $12,000 $35,000 $12,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 185,000 Administration & Legal Costs (15%) . . . . . . . . . . . . . . . . $27,750 Contingency (25%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $46,250 TOTAL (ANNUAL) O&M COSTS___________________________________________________$259,000 O&M PRESENT WORTH - GRA 3, YEAR 30 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $3,982,000 EQUIPMENT REPLACEMENT - GRA 3 Major Equipment Replacement 1 L.S. $260,000 $260,000 _____O&M PRESENT WORTH, YEAR 15 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $125,000 Minor Equipment Replacement 1 L.S. $49,035 $49,035 _____O&M PRESENT WORTH, YEARS 5, 10, 15, 20, 25 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . $125,000 TOTAL O&M PRESENT WORTH GRA 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $4.232,000 O&M (ANNUAL) COSTS (TO YEAR 5) - SCPs SCPatEsso 1 L.S. $60,000 $60,000 SCP at Texaco__________________1__________L.S._____________$101,000________$101,000 ___________________________TOTAL ANNUAL O&M COST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $161,000 O&M PRESENT WORTH - SCPs, YEAR 5 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $697.000 O&M PRESENT WORTH - GRA 3 and SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $4,929,000 GRAND TOTAL - GRA 3 $5,804,000 GRAND TOTAL - GRA 3 and SCPs $7,466,000 L.F. Linear Feet. S.F. Square Feet. L.S. Lump Sum. EA. Each. PVC Polyvinyl Chloride. P04 Orthophosphates. O&M Operation and Maintenance. SCP Source Control Plan. GRA Groundwater Remedial Alternative. Source (design and O&M assumptions) for cost estimates is presented in Appendix C. Tutu Wellfield Site FS Addendum Revised 7/96 by de maximis, inc. 008 0732 Table 5-11R, Page 1 of 2 Table 5-11R. Cost Estimate - GRA 4 (Institutional Controls/Source and Plume Containment/Treatment/Discharge), TuTu Wells Site, St. Thomas, U.S. Virgin Islands. iii: iilf J 0:lfj : ITEMS::. ^M Mi ' - li • ;.'. J " ::: QU Af1 ^^M^^^:^^^!^^>L^-.':-^f CAPITAL COSTS Deed Restrictions Site Preparation/Mobilization Well Decommissioning 1 Site Acquisition Groundwater Extraction System Recovery Well Installation Submersible Pumps (installed) E 4"-6" Double-Walled PVC Pipe E (installed, with leak detection) 5,2 Pre-Treatment (P04) 1 Low Profile Air Stripper (installed) Thermal Oxidizsr (installed, if required) Liquid Phase Carbon Treatment System (installed, if required) 1 Process Pumps Piping (installed) ^ 2C Discharge Pumps Piping (installed) E 2 Treatment Building (installed) 6C Electric Electric Panel and Plant Wiring Conduit to Wells 5,2 General Contractor TOTAL CAPITAL COST - GRA 4 TOTAL CAPITAL COST - SCP A T ESSO TOTAL CAPITAL COST - SCP AT TEXACO TOTAL CAPITAL COST - GRA 4 AND SCPs JtiTY &'fi&x; UNIT • :;?;f 11, 111$!* ;Pf:lf . ••£ '":•• ;;.•"... ^."'^4^ 'f ?•; ffcb L.S. $1 L.S. $4 7 EA. $ L.S. $2 5 EA. $3 5 EA. $ 00 L.F. L.S. $2 L.S, $4 L.S. $25 L.S. $5 ; EA. $ )0 L.F. 5 EA. $1 0 L.F. )0 S.F. L.S. $7 00 L.F. L.S. $12 Subtotal . . . . . . . . . . . . . . . . . . . . Administration & Legal Costs (20%) Engineering Design (10%) . . . . . . . Construction Supervision (15%) . . . Contingency (25%) . . . . . . . . . . . . TOTAL CAPITAL COST - TREA TMENT |||;|||^ 0,000 $10,000 0,000 $40,000 1,000 $17,000 5,000 $25,000 8,000 $190,000 6,000 $30,000 $65 $338,500 5,000 $25,000 0,000 $40,000 0,000 $250,000 0,000 $50,000 5,000 $20,000 $10 $2,000 0,000 $20,000 $30 $1,500 $60 $36,000 0,000 $70,000 $2 $10,400 5,000 $125,000 . . . . . . . . . . . . $1,2992,900 . . . . . . . . . . . . . . $259,980 . . . . . . . . . . . . . . $129,990 . . . . . . . . . . . . . . $194,985 . . . . . . . . . . . . . . $324,975 $2,209,830 $2,270,000 $100,000 $865,000 $3,175,000 TUT 008 073: Table 5-11R, Page 2 of 2 Q&M (ANNUAL) COSTS - GRA 4 Groundwater Monitoring 2 Electricity (Avg) 270,000 Supplemental Fuel (Propane) 1 Chemical Usage (P04) 1 Carbon Replacement 3,000 System Operation 1 (one person - full time) Treatment System Monitoring (Avg) 12 Sample rounds/year Kilowatt-hour L.S. L.S. Pounds of carbon L.S. EA. $32,000 $0.10 $38,000 $10,000 $6 $35,000 $1,000 $64,000 $24,000 $38,000 $10,000 $18,000 $35,000 $12,000 Subtotal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $224,000 Administration & Legal Costs (15%) . . . . . . . . . . . . . . . . $33,600 Contingency (25%l . . . . . . . . . . . . . . . . . . . . . . . . . . . . $56,000 TOTAL (ANNUAL) O&M COSTS $313,600 ^O&M PRESENT WORTH - GRA £, YEAR 30 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . $4,821,000 EQUIPMENT REPLACEMENT - GRA 4_______________________________________________________ Major Equipment Replacement 1 L.S. $365,000 $365,000 _____O&M PRESENT WORTH, YEAR 15 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $176,000 Minor Equipment Replacement 1 L.S. $63,490 $63,490 _____O&M PRESENT WORTH, YEARS 5, 10, 15, 20, 25 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . $162,000 TOTAL O&M PRESENT WORTH GRA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $5.159.000 O&M (ANNUAL) COSTS (TO YEAR 5) - SCPs SCPatEsso 1 L.S. $60,000 $60,000 SCP at Texaco__________________1__________L.S._____________$101,000________$101,000 TOTAL ANNUAL O&M COST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 161,000 O&M PRESENT WORTH - SCPs, YEAR 5 (5% discount rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $697,000 O&M PRESENT WORTH - GRA 4 and SCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $5,856,000 GRAND TOTAL - GRA 4 $7,369,000 GRAND TOTAL - GRA 4 and SCPs $9,031,000 L.F. Linear Feet. S.F. Square Feet. L.S. Lump Sum. EA. Each. PVC Polyvinyl Chloride. GRA Groundwater Remedial Alternative. P04 Orthophosphates. O&M Operation and Maintenance. SCP Source Control Plan. Source (design and O&M assumptions) for cost estimates is presented in Appendix C. TUT' Tutu Wellfield Site FS Addendum Revised 7/96 by de maximis, inc. 0734 Table 5-12R. Cost Comparison of Remedial Alternatives, TuTu Wells Site, St. Thomas, U.S. Virgin Islands. SRA 1 SRA 2 and SCPs SRA 3 and SCPs SRA 4 and SCPs SRA 5 and SCPs GRA 1 GRA 2 and SCPs GRA 3 and SCPs GRA 4 and SCPs i|||||i||:|^^;;i?||li|||||!|s $15,000 $311,000 $1,533,000 $1,502,000 $2,035,000 $15,000 $2,366,000 $2,537,000 $3,175,000 lll::|l;l:i^Iil:viillllllllil lillllPiii^iPililllli NA $396,000 $2,062,000 $2,038,000 $1,786,000 $1,377,000 $6,223,000 $4,929,000 $5,856,000 $15,000 $707,000 $3,595,000 $3,540,000 $3,821,000 $1,392,000 $8,589,000 $7,466,000 $9,031,000 SRA Soil Remedial Alternative. SCPs Source Control Plans for the Texaco and Esso properties. GRA Groundwater Remedial Alternative. O&M Operations and Maintenance. FILE: 3089YTABLE512 r Tutu Wellfield Site FS Addendum Revised 7/96 By de max/mis, inc. TUT OOS O735