WTC Phase I Indoor Clean Up Program Overview, June 2002

z f 'To'TAC' z -< o (O S o EPA INDOOR CLEAN UP & TESTING PROGRAM ■D I c o o PHASE I CT o o' CLEAN UP TJ o to Studio OneBR TwoBR Three BR FourBR TOTAL 3- 03 00 1 Number of calls 4200 O o 2 Distribution of apts - %_______________________ 5 20 50 20 5 o c 3 Distribution of apts__________________________ 210 840 2100 840 210 4200 3 CD Zi 4 Cost of cleaning / apt (Scope of work A)_________ $3,000 $3300 $4;33 $4300 $5,000 5 Total Cost of deeming for Scope A______________ $630,000 $2,940,000 $8,400,000 $3,780,000 $1,050,000 6 Number of calls - Scope A with AFP____________ 1800 5 20 50 20 5 7 Distribution of apts_____ 90 360 900 360 90 1^00 8 Cost of cleaning / apt (Scope of work A) with AFP $3,600 $4,100 $4,600 $5,100 $5,600 9 Total Cost of cleaning Scope A with AFP________ ^24® $1,476,000' $4,140,000 $1336,000 $504;33 10 Total Cost of cleaning________________________ $954,000 $4,416,000 $12340,000 $5,616,000 $1,554,000 $25,080, 33 11 Number of apt, that may require Scope of work B 500 12 Distribution of apts - %_______________________ 5 20 50 20 5 13 Distribution of apts__________________________ 25 100 250 100 25 500 14 Cost of cleaning / apt (Scope of work B)_________ $4,600 $5300 $6,000 $6,700 $7,000 15 Total Cost of cleaning________________________ $115,000 $530,000 $1300,000 $670,000 $175,000 $2,990;33 COMMON SPACES 16 Number of common spaces(floors) to be cleaned 33 17 Common spaces area /floor - sqft______________ 1200 18 Common space area(1200+1200+2(12*10+100*10)) 4640 19 No. of floors with debris(Scope B)______________ 400 20 Clean up cost of floors with no debris @) $0.75 $5368,000 $5,568® 21 Cost of clean up of common areas(Scope B) @$2.5 $4,640,000 $4,640,32 22 No. of elevator shafts to deaned (ScopeB)________ 23 Surface area (walls, ceiling & base) / Elevator - sq.ft 8,000 24 Cost of dean up of elevator shafts@$3.5 $5,600,000 $5,600;33 $10,208,000 HVAC 25 Number of apts that needs HVAC clean up 1,000 26 Cost of HVAC duct clean up @$1000 $1,000,000 $1,000;33

27 TOTAL CLEAN UP COST $44378,000 krish INDOOR APTS awM UPSJdS 8/9/02