Notice to Members
Notice No. 188
04/09/2008
Outright (SCAN) Margin Rate Changes for the Existing Natural Gas Basis, Index Swap Contracts and Synthetic Underlying Futures for Options on Natural Gas Delivery Points ("Pipe Option")
EFFECTIVE DATE:     Thursday, April 10, 2008 (close of business)

FUTURES CONTRACTS:
Contract Name Symbol
CIG Basis Swap CI
Northwest Pipeline, Rockies Basis Swap NR
Texas Eastern Zone M-3 Basis Swap NX
Transco Zone 6 Basis Swap NZ
Tetco South Texas Basis Swap TX
Synthetic Underlying for PG&E Citygate "Pipe" Option XQ
Synthetic Underlying for Alberta "Pipe" Option XI
Synthetic Underlying for Northern Rockies "Pipe" Option XR
Synthetic Underlying for Transco Zone 6 "Pipe" Option XZ
Synthetic Underlying for Chicago Citygate "Pipe" Option XO
Synthetic Underlying for Houston Ship Channel "Pipe" Option XJ
Synthetic Underlying for San Juan "Pipe" Option XX
Synthetic Underlying for SOCAL  "Pipe" Option XN
Synthetic Underlying for Panhandle "Pipe" Option XH
CONTRACT MONTHS: All Months

NOTE: The revised margin rates are in bold

NYMEX Division Outright (Scan) Margins for Existing Natural Gas Basis Swaps
 
 
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
 
New
Old
New
Old
New
Old
CIG Rockies  Swap (CI)            
Tier 1 $1,000 $1,200 $1,100 $1,320 $1,350 $1,620
Tier 2 $1,000 $1,200 $1,100 $1,320 $1,350 $1,620
Tier 3 $600 $600 $660 $660 $810 $810
Tier 4 $500 $500 $550 $550 $675 $675
Tier 5 $500 $500 $550 $550 $675 $675
Northwest Pipeline, Rockies  Swap (NR)            
Tier 1 $1,000 $1,000 $1,100 $1,100 $1,350 $1,350
Tier 2 $800 $800 $880 $880 $1,080 $1,080
Tier 3 $600 $600 $660 $660 $810 $810
Tier 4 $400 $300 $440 $330 $540 $405
Tier 5 $400 $300 $440 $330 $540 $405
Texas Eastern Zone M-3 Swap (NX)            
Tier 1 $750 $1,000 $825 $1,100 $1,013 $1,350
Tier 2 $600 $900 $660 $990 $810 $1,215
Tier 3 $500 $400 $550 $440 $675 $540
Tier 4 $300 $200 $330 $220 $405 $270
Tier 5 $200 $200 $220 $220 $270 $270
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com