PERSISTENCY TIMES OF CHEM AGENTS ON CARC VEHICLES

File: 970612_sep96_decls11_0003.txt
Page: 0003
Total Pages: 4
Subject = PERSISTENCY TIMES OF CHEM AGENTS ON CARC VEHICLES               

Parent Organization = ARCENT      

Unit = XVIII CORPS 

Folder Title = NBC LOGS AND MESSAGES-1                                                                         

Document Number =         19

Box ID = BX000095






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     TEMPERATURE, WHICH WI.LL REDUCE THE PERSI ISTENCY TIMES. ALL THE
     PERSISTENCY TIMES LISTED ABOVE  ASSUME CONSTANT WEATHER CONDITIONS.
     CHANGES IN WEATHER WILL-AFFECT  THE PERSISTENCY TIMES.
     4. SURFACE CHARACTERISTICS ALSO AFFECT PERSISTENCY TIMES.
     CHARACTERISTICS SUCH AS WET OR DRY, COMPACT OR LOOSE SOIL, DRY OR
     CLEAN VEHICLES, ETC., ARE IMPORTANT. THE VEHICLE PERSIL-IT-QLY
     T                                 T. DRY, rARr.-PAIN'rED-METAL
     SURFACES. OTHER VEHICLE SURFACES, SUCH AS ALKYD PAINTED METAL OR
     RIJBBER7 WILL WEATHER'-DIFFERENTLY.




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     5. THE PERSISTENCY TIMES.FROM SAND ARE SIGNIFICANTLY LONGER THAN
     FROM THC VEHICLE. SOME AGENT UILL SORB INTO THE SAND AND COULD
     PRESENT A HAZARD WHEN THE TERRAIN IS CROSSED AND THE SOIL IS
     DISTURBED.
     6. EVEN AFTER A PREVIOUSLY CONTAMINATED SURFACE IS VISIBLY DRY,
     IT HAS NOT NECESSARILY WEATHERED TO A SAFE LEVEL FOR EITHER
     CONTACT OR VAPOR HAZARD DUE TO POSSIBLE DESORPTION, ESPECIALLY
     FOR AGENT HD.
     7. THE POINTS OF CONTACT ARE MR. MICHAEL M. MYIRSKI AND MR. JOHN
     D. WALTHER, SMCCR-OPA, DSN 5Ei4-3570/3933.
     BT
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