7 World Trade Center legal correspondence, Apr 2002

NYC 9/11 Public Portal Document r.KJo .../ iMdinnjement hinal $ubmiual 6 M-4.01 • Please correct the cooling loads’ typograp deal errof for XC-I thru 3. ' ♦ Complete ventilation index. * the motor for the exhaust fan EF«S ry ed to be explosion proof? 7 Section Paragrq5h 1.4: Identify shut off valves VI thr 14 on the drawings. 'Where 15110 die butterfly and check valves are being used'. 8 Section Paragraph 1.4; The abbreviation of fusible link? dampers (FLD) do not 15120 correlate with drawings (ALP). ______ J 9 ScefiojQ • Verify paragraph 1.1 item F. ‘ ” 15150 • Edit paragraph 1.2 it era A.

______________________ Fire protection________ 1 FPLOl Please verify the need to provide fire protecdo] i. for the 6555] GalFncIOii T^nk in accordance with N YS code, Subci *B, Part 1002.7. 2 FP2.07 Verify the need to provide thermal detectors in the emergency diesel generators room to close off the Fresh Air Intak e and exhaust Id case of fire. 3 FP5.23 1. Is tihere a need for a prtacSon sprinkler systtun for the A/V room? 2. Verify the peed to provide sprinklers head i ;t the electrical closet adjaoent to elevator shaft P^18 and stairway. This ttx«n contains a 112.5KVA transformer. 3. Verify the distances between sprinklers in ti c Mechanical Room and the watch command areas, 4. Verify the need of the inspectors test connedtioa at the end of the sprinkler system. 5. Show the drain lines for the preactionsysten 4._______ _________ ■ • 4 “What measure of fireTprotStiog is provid«i foTdm radio room on the roof?

_______________________ PLUMBING______________________ I P2.07 & What provision Is made to minimize disoptiou o tenants when the cold P3.23 water riser will be installed or when the drain lines will be run below their suspended ceilings,______________________________ 2 P3.23 Indicate the location of the backflow preventgr ft r the two cooling towers. 3 Section Where do you use a submersible pump? If that h the sump pump for the 15445 tank room what rizc reservoir is req^ed.

____________________________ Electrical_____________________________ I General ♦ Indicate the motor horsepower for tach motof symbol, • Are meters required? • Complete the riser diagram: indicate the loads being served from each panel and the size of the breakers. • Indicate the transformers' type of connection erd voltages as well as their primaiy switches and fuses. • Can the oil fill pvrmp, the water tank fill pump tind the exhaust fan £F«5 on the 1st floor, be activated from the dual ci tie powersupply. « Show the automatic power transfer distribotit to the existing pneumatics controls and to the Air Handling unit serving the 23rd floor. « Show circuit breakers panel schedule._________________________

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