Cost Estimate

Fairfield at Marlborough Marlborough, Massachusetts Preliminary Sitework Estimate 360-Unit Layout dated 8/23/04 Description ON-SITE Sitework Clear & Grub & Destump Cut Onsite (but reused) Fill from On-site (from cut) Fill (from off-site) Rock Excavation Rough Grade Erosion Control

Rizzo Associates, Inc. Page 1 of 3 Quantity

Unit

Unit price

Amount

20 ac cy cy cy cy sy 2,486 lf

$6,000 $3 $4 $10 $50 $2 $4

$118,200 $0 $0 $0 $0 $0 $9,944

cy ea 51 ea 45 ea 5 ea 2,109 ft 961 ft 362 ft ft 388 ft 623 ft 1,255 ft 2 ea

$100 $2,200 $1,350 $1,350 $10,000 $20 $22 $25 $28 $30 $35 $15 $2,500

$0 $0 $68,850 $60,750 $50,000 $42,180 $21,142 $9,050 $0 $11,640 $21,805 $18,825 $5,000

Hydrant 4" water services 8" CLDI 8" Valves

8 ea 804 ft 3,874 ft 23 ea

$1,250 $20 $40 $80

$10,000 $16,080 $154,960 $1,840

Sewer Manhole 6" PVC sewer pipe 8" PVC sewer pipe

24 ea 834 ft 2,800 ft

$1,500 $20 $35

$36,000 $16,680 $98,000

6" Gas Main (Negotiate with NSTAR) Gas services

3,268 ft 473 ft

$40 $40

$130,720 $18,920

Tel/Elec/Ca. Ducts Utility manholes Transformers

3,499 lf 8 ea 10 ea

$75 $4,000 $2,000

$262,425 $32,000 $20,000

ea

$2,800

$0

11,101 ft 36,442 sf 28,357 sy

$16 $4 $14

$177,616 $145,768 $396,998

$6

$3,972

$200,000 $22 $10

$200,000 $0 $24,560

Utilities Trench Rock Excavation Double Catch-Basin Regular Catch-Basin Drainage Manhole Stormceptor 12" CPP 15" CPP 18" CPP 21" CPP 24" CPP 30" CPP Basin fencing Basin Outlet Structures

Site Lighting Paving and Curbing Concrete curb Concrete Sidewalk Pavement (31/2" bit conc, 12" Gravel) Striping Miscellaneous Landscaping Ret. Wall (modular) Guardrail Subtotal - On Site Contingency (15%) Total

662 spaces

1 allow sf 2,456 lf

$2,183,925 $327,589 $2,511,514

P/8000/8852/17528028.xls

Fairfield at Marlborough Marlborough, Massachusetts Preliminary Sitework Estimate 360-Unit Layout dated 8/23/04 OFF-SITE (Main Access) Off-Site work (Access Road) Clear & Grub & Destump Cut Onsite (but reused) Fill from Off-site Rough Grade Erosion Control

Rizzo Associates, Inc. Page 2 of 3

1 ac 0 cy 1,800 cy 3,000 sy 1,050 lf

$6,000 $3 $8 $3 $4

$6,000 $0 $14,400 $9,000 $4,200

2 ea 2 ea 2 ea 1 ea 650 ft 3 ea

$2,200 $1,350 $1,350 $10,000 $30 $50

$4,400 $2,700 $2,700 $10,000 $19,500 $150

8" CLDI 8" Valves

500 ft 2 ea

$40 $80

$20,000 $160

6" Gas Main

500 ft

$40

$20,000

Tel/Elec/Ca. Ducts

500 lf

$75

$37,500

1,050 ft 1,600 sy

$5 $14

$5,250 $22,400

$20,000 $300,000 $59,000 $2,500 $5,000 $8

$20,000 $300,000 $59,000 $2,500 $5,000 $430,848

Utilities Double Catch-Basin Regular Catch-Basin Drainage Manhole Stormceptor 12" RCP R&R Structures

Paving and Curbing (24' Road) Bit Berm Curb Pavement (31/2" bit conc, 12" Gravel) Miscellaneous Landscaping Steel Arch Bridge Wetlands Replication R&R Lightpole Replace Basin Outlet Structure Sewer Capcity Mitigation Fee

1 allow 1 ls 1 ls 1 ea 1 ea 53,856 gl

Subtotal - Off-Site Contingency Total

$995,708 $149,356 $1,145,064

Total, On and Off Site

$3,656,578 Say

$5,800,000

Not Included: Buildings Pool The on-site retaining wall number is for fill retaining walls only. Ledge retaining walls is accounted for in the ledge excavation numbers. This estimate reflects the layout shown on the Grading Plan by Rizzo Assoc. dated July 12, 2002, revised October 21, 2002.

P/8000/8852/17528028.xls

Trench Trench Trench Area, Depth Width SF Drainage 5 4 20.00 Water 6 2 12.00 Sewer 6 3 18.00 Gas 3 2.5 7.50 T/E/C 3 3.5 10.50

Area 1 2 3 4 5 6 7 8 9 10 11 12 Lengths TOTAL

Ledge Depth 20 0 8 1 14 4 8 0 0 2 17 26

Drain Drain Ledge, Water Water Ledge, Sewer Sewer Ledge, Gas Gas Ledge, Length CY Length CY Length CY Length CY 40 170 350 230 160 430 290 210 340 535 290 675 3720

0.00 125.93 0.00 136.30 0.00 63.70 0.00 155.56 251.85 237.78 0.00 0.00

225 235 0 230 0 275 295 250 290 530 390 750

0.00 104.44 0.00 85.19 0.00 40.74 0.00 111.11 128.89 157.04 0.00 0.00

3470 971.11 CY

627.41

0 265 0 210 0 352 270 209 270 400 98 0

0.00 176.67 0.00 116.67 0.00 78.22 0.00 139.33 180.00 177.78 0.00 0.00

2074

145 22 0 175 0 235 235 205 315 295 70 0

0.00 6.11 0.00 32.41 0.00 0.00 0.00 56.94 87.50 27.31 0.00 0.00

1697 868.67

T/E/C Length 130 250 0 270 0 280 265 200 250 410 140 0

T/E/C Ledge, CY 0.00 97.22 0.00 70.00 0.00 0.00 0.00 77.78 97.22 53.15 0.00 0.00

Total 0.00 510.37 0.00 440.56 0.00 182.67 0.00 540.72 745.46 653.06 0.00 0.00

2195 210.28

395.37

3072.83 CY