ALTERNATIVE NO. 1A - Shallow Wells with Greensand Filtration Pretreatment A. Construction and Non-Construction Costs CONSTRUCTION COSTS 1. Mobilization & General Conditions (5%) $205,000 2. W ork at W ellfield a. Dem olition $25,000 b. Sitework $125,000 c. New W ell and W ell Pumps $225,000 d. Building $50,000 e. Yard Piping $25,000 f. Electrical/Instrum entation $120,000 g. Miscellaneous $5,000 3. Treatment Plant W ork a. Selective Dem olition - Existing W TP $50,000 b. Greensand Filters $425,000 c. Nanofiltration Equipm ent $800,000 d. Chem ical Feed System s $200,000 e. Ground Storage Tank $200,000 f. High Service Pumps $125,000 g. Concentrate Disposal $400,000 h. Modifications to Existing RIB $50,000 I. Building $500,000 j. Yard Piping $200,000 k. Sitework $250,000 l. Electrical/Instrum entation $350,000 m. Miscellaneous $50,000 CONSTRUCTION TOTAL $4,380,000 NON-CONSTRUCTION COSTS 1. Construction Contingency (10%) $438,000 2. Engineering a. SRF Pre-Construction Adm inistration $12,000 b. SRF W ater Facilities Plan $78,000 Page 1

NON-CONSTRUCTION COSTS (cont.) c. RD Preliminary Engineering Report $45,000 d. RD Environm ental Report $20,000 e. RD Design and Construction Adm inistration (6.85% x$4,818,000) $330,000 f. RD Resident Observation $135,200 g. Topo Surveying $4,000 h. Perm itting (FDEP, SRW MD, FDOT) $31,500 I. Geotechnical Investigation $12,000 j. SRF Post Allowance Administration $22,900 k. Startup Services $6,000 l. O&M Manual $10,000 3. Legal Fees $65,000 4. Interim Financing $125,000 NON-CONSTRUCTION TOTAL $1,334,600 * Does not include Davis Bacon Buy American TOTAL PROJECT COST $5,714,600 B. Annual Operation & Maintenance Costs: The estimated annual O&M costs for Alternative No. 1A are as follows. Category Cost Personnel (Salary, Benefits, Payroll Tax, Insurance, Training) $173,000 Administrative Costs (Office Supplies, Postage, Printing) $5,500 Insurance $25,000 Energy Cost (Electrical & Fuel) $35,000 Chemicals $25,000 Monitoring & Testing $13,000 Short-Lived Asset Maintenance/Replacem ent $10,000 Professional Services $37,000 Repair & Maintenance $66,000 Miscellaneous $17,000 TOTAL $406,500 Page 2

C. Present Worth of Alternative 1A The present worth converts all costs to present-day dollars using the following equation: NPV = C + (USPW) (O&M) - (SPPW) (S) where NPV = Net Present Worth C = Capital Cost (Construction Costs plus Non-Construction Costs) USPW = Uniform Series Present Worth Factor = where i% = 4.375% = 0.04375 N = 20 years 13.15 O&M = Annual O&M Costs SPPW = Single Payment Present Worth Factor = = 0.425 S = Salvage Value = where X = years of unused life L = years of total life K = initial value NPV = C + (USPW) (O&M) - (SPPW) (S) NPV = 5,714,600 + (13.5) (406,500) - (0.425) (S) NPV = 11,202,000 - (0.425) (S) For S, Equipment (E) has L = 20 Structures, Piping, and Buildings (SPB) have L = 40 For E, K = 425,000 + 800,000 + 200,000 + 125,000 $1,550,000 Page 3

For SPB, K = 50,000 + 25,000 + 200,000 + 500,000 + 200,000 $975,000 For E at end of 20 years, X = 0, L = 20, and S = (1,550,000) = 0 For SPB at end of 20 years, X = 20, L = 40, and S = (975,000) = 488,000 Thence, NPV = 11,202,000 - (0.425) (0 + 488,000) NPV = $10,995,000 Page 4

ALTERNATIVE NO. 1B - Shallow Wells with Ultrafiltration Pretreatment A. Construction and Non-Construction Costs: CONSTRUCTION COSTS 1. Mobilization & General Conditions (5%) $235,000 2. W ork at W ellfield a. Dem olition $25,000 b. Sitework $125,000 c. W ell and W ell Pumps $225,000 d. Building $50,000 e. Yard Piping $25,000 f. Electrical/Instrum entation $120,000 g. Miscellaneous $5,000 3. Treatment Plant W ork a. Selective Dem olition - Existing W TP $50,000 b. Ultrafiltration Equipm ent $900,000 c. Nanofiltration Equipm ent $800,000 d. Chem ical Feed System s $250,000 e. Ground Storage Tank $200,000 f. High Service Pumps $125,000 g. Concentrate Disposal $400,000 h. Modifications to Existing RIB $50,000 I. Building $500,000 j. Piping $200,000 k. Sitework $250,000 l. Electrical/Instrum entation $400,000 m. Miscellaneous $50,000 CONSTRUCTION TOTAL $4,985,000 NON-CONSTRUCTION COSTS 1. Construction Contingency (10%) $498,500 2. Engineering a. SRF Pre-Construction Adm inistration $12,000 b. SRF W ater Facilities Plan $78,000 Page 5

NON-CONSTRUCTION COSTS (cont.) c. RD Preliminary Engineering Report $45,000 d. RD Environm ental Report $20,000 e. RD Design and Construction Adm inistration (6.76% x$5,385,000) $364,000 f. RD Resident Observation $135,200 g. Topo Surveying $4,000 h. Perm itting (FDEP, SRW MD, FDOT) $31,500 I. Geotechnical Investigation $12,000 j. SRF Post Allowance Administration $22,900 k. Startup Services $6,000 l. O&M Manual $10,000 3. Legal Fees $65,000 4. Interim Financing $125,000 * Does not include Davis Bacon Buy American NON-CONSTRUCTION TOTAL $1,429,100 TOTAL PROJECT COST $6,414,100 B. Annual Operation & Maintenance Costs: The estimated annual O&M costs for Alternative No. 1B are as follows. Category Cost Personnel (Salary, Benefits, Payroll Tax, Insurance, Training) $173,000 Administrative Costs (Office Supplies, Postage, Printing) $5,500 Insurance $25,000 Energy Cost (Electrical & Fuel) $37,000 Chemicals $40,000 Monitoring & Testing $13,000 Short-Lived Asset Maintenance/Replacement $20,000 Professional Services $37,000 Repair & Maintenance $72,000 Miscellaneous $17,000 TOTAL $439,500 Page 6

C. Present Worth of Alternative 1B The present worth converts all costs to present-day dollars using the following equation: NPV = C + (USPW) (O&M) - (SPPW) (S) NPV = 6,414,000 + (13.15) (439,500) - (0.427) (S) NPV = 12,193,000 - (0.425) (S) For S, Equipment (E) has L = 20 Structures, Piping, and Buildings (SPB) have L = 40 For E, K = 900,000 + 800,000 + 250,000 + 125,000 $2,075,000 For SPB, K = 50,000 + 25,000 + 200,000 + 500,000 + 200,000 $975,000 For E at end of 20 years, X = 0, L = 20, and S = (2,075,000) = 0 For SPB at end of 20 years, X = 20, L = 40, and S = (975,000) = 487,500 Thence, NPV = 12,193,000 - (0.425) (0 + 487,500) NPV = $11,986,000 Page 7

ALTERNATIVE NO. 2A - Deep Wells with Cartridge Filtration Pretreatment A. Construction and Non-Construction Costs: CONSTRUCTION COSTS 1. Mobilization & General Conditions (5%) $205,000 2. W ork at W ellfield a. Dem olition $25,000 b. Sitework $175,000 c. Two Deep W ells and W ell Pumps $400,000 d. Building $50,000 e. Yard Piping $25,000 f. Electrical/Instrum entation $140,000 g. Miscellaneous $5,000 3. Treatment Plant W ork a. Selective Dem olition - Existing W TP $50,000 b. Reverse Osmosis Equipment $680,000 c. Chem ical Feed System s $250,000 d. Packed Tower Degasifier and Odor Control $275,000 e. Ground Storage Tank $200,000 f. High Service Pumps $125,000 g. Concentrate Disposal $400,000 h. Building $500,000 I. Yard Piping $200,000 j. Sitework $250,000 k. Electrical/Instrum entation $350,000 l. Miscellaneous $50,000 CONSTRUCTION TOTAL $4,355,000 NON-CONSTRUCTION COSTS 1. Construction Contingency (10%) $435,500 2. Engineering a. SRF Pre-Construction Adm inistration $12,000 b. SRF W ater Facilities Plan $78,000 Page 8

NON-CONSTRUCTION COSTS (cont.) c. RD Preliminary Engineering Report $45,000 d. RD Environm ental Report $20,000 e. RD Design and Construction Adm inistration (6.86% x$4,791,000) $328,700 f. RD Resident Observation $135,200 g. Topo Surveying $4,000 h. Perm itting (FDEP, SRW MD, FDOT) $31,500 I. Geotechnical Investigation $12,000 j. SRF Post Allowance Administration $22,900 k. Startup Services $6,000 l. O&M Manual $10,000 3. Legal Fees $65,000 4. Interim Financing $125,000 * Does not include Davis Bacon Buy American NON-CONSTRUCTION TOTAL $1,330,800 TOTAL PROJECT COST $5,685,800 B. Annual Operation & Maintenance Costs: The estimated annual O&M costs for Alternative No. 2A are as follows. Category Cost Personnel (Salary, Benefits, Payroll Tax, Insurance, Training) $173,000 Administrative Costs (Office Supplies, Postage, Printing) $5,500 Insurance $25,000 Energy Cost (Electrical & Fuel) $54,000 Chemicals $20,000 Monitoring & Testing $13,000 Short-Lived Asset Maintenance/Replacem ent $10,000 Professional Services $37,000 Repair & Maintenance $65,000 Miscellaneous $17,000 TOTAL $419,500 Page 9

C. Present Worth of Alternative 2A The present worth converts all costs to present-day dollars using the following equation: NPV = C + (USPW) (O&M) - (SPPW) (S) NPV = 5,685,800 + (13.15) (419,500) - (0.427) (S) NPV = 11,202,000 - (0.425) (S) For S, Equipment (E) has L = 20 Structures, Piping, and Buildings (SPB) have L = 40 For E, K = 680,000 + 250,000 + 275,000 + 125,000 $1,330,000 For SPB, K = 50,000 + 25,000 + 200,000 + 500,000 + 200,000 $975,000 For E at end of 20 years, X = 0, L = 20, and S = (1,330,000) = 0 For SPB at end of 20 years, X = 20, L = 40, and S = (975,000) = 487,500 Thence, NPV = 11,202,000 - (0.425) (0 + 487,500) NPV = $10,995,000 Page 10

ALTERNATIVE NO. 2B - Deep Wells with Greensand Filtration Pretreatment A. Construction and Non-Construction Costs: CONSTRUCTION COSTS 1. Mobilization & General Conditions (5%) $225,000 2. W ork at W ellfield a. Dem olition $25,000 b. Sitework $175,000 c. W ell and W ell Pumps $400,000 d. Building $50,000 e. Yard Piping $25,000 f. Electrical/Instrum entation $140,000 g. Miscellaneous $5,000 3. Treatment Plant W ork a. Selective Dem olition - Existing W TP $50,000 b. Greensand Filtration $425,000 c. Reverse Osmosis Equipment $680,000 d. Chem ical Feed System s $250,000 e. Packed Tower Aeration and Odor Control $275,000 f. Ground Storage Tank $200,000 g. High Service Pumps $125,000 h. Concentrate Disposal $400,000 I. Building $500,000 j. Yard Piping $200,000 k. Sitework $250,000 l. Electrical/Instrum entation $350,000 m. Miscellaneous $50,000 CONSTRUCTION TOTAL $4,800,000 NON-CONSTRUCTION COSTS 1. Construction Contingency (10%) $480,000 2. Engineering a. SRF Pre-Construction Adm inistration $12,000 b. SRF W ater Facilities Plan $78,000 Page 11

NON-CONSTRUCTION COSTS (cont.) c. RD Prelim inary Engineering Report $45,000 d. RD Environm ental Report $20,000 e. RD Design and Construction Adm inistration (6.78%x$5,280,000) $358,200 f. RD Resident Observation $135,200 g. Topo Surveying $4,000 h. Perm itting (FDEP, SRW MD, FDOT) $31,500 I. Geotechnical Investigation $12,000 j. SRF Post Allowance Adm inistration $22,900 k. Startup Services $6,000 l. O&M Manual $10,000 3. Legal Fees $65,000 4. Interim Financing $125,000 * Does not include Davis Bacon Buy American NON-CONSTRUCTION TOTAL $1,404,800 TOTAL PROJECT COST $6,204,800 B. Annual Operation & Maintenance Costs: The estimated annual O&M costs for Alternative No. 2B are as follows. Category Cost Personnel (Salary, Benefits, Payroll Tax, Insurance, Training) $173,000 Administrative Costs (Office Supplies, Postage, Printing) $5,500 Insurance $25,000 Energy Cost (Electrical & Fuel) $61,000 Chemicals $20,000 Monitoring & Testing $13,000 Short-Lived Asset Maintenance/Replacem ent $10,000 Professional Services $37,000 Repair & Maintenance $69,000 Miscellaneous $17,000 TOTAL $430,500 Page 12

C. Present Worth of Alternative 2B The present worth converts all costs to present-day dollars using the following equation: NPV = C + (USPW) (O&M) - (SPPW) (S) NPV = 6,204,800 + (13.15) (430,500) - (0.425) (S) NPV = 11,866,000 - (0.425) (S) For S, Equipment (E) has L = 20 Structures, Piping, and Buildings (SPB) have L = 40 For E, K = 425,000 + 680,000 + 250,000 + 275,000 + 125,000 $1,755,000 For SPB, K = 50,000 + 25,000 + 200,000 + 500,000 + 200,000 $975,000 For E at end of 20 years, X = 0, L = 20, and S = (1,755,000) = 0 For SPB at end of 20 years, X = 20, L = 40, and S = (975,000) = 487,500 Thence, NPV = 11,866,000 - (0.425) (0 + 487,500) NPV = $11,659,000 Page 13