SUBSCRIBER NOTE: Platts changes timing basis for ethylene FD USG

Effective September 2, 2014, Platts will change the timing basis reflected in its daily US spot ethylene assessment to current delivery month (M1) and next month (M2) from the current 3- to 30-day basis.

Platts will roll the current delivery month into next delivery month three (3) calendar days prior to the end of the month.

If this day falls on a weekend or holiday, Platts will roll its US spot ethylene assessments to the next month on the next business day.

All other assessment parameters will remain in effect.

Spot ethylene will remain assessed on a free-delivered (FD) basis into the US Gulf Coast pipeline system in Texas, with standard cargo size of 5 million-10 million lb and minimum purity of 99.9%.

Platts has also amended the description for its current ethylene FD USG assessment to reflect the assessment of FD USG ethylene in Month 1.

The assessment codes will change as follows:

AAOSR00 will change its description from LB Ethylene FD USG cts/lb to LB Ethylene FD USG Mo01 AAOSR03 will change its description from LB Ethylene FD USG cts/lb MAvg to LB Ethylene FD USG Mo01 MAvg AAOSR05 will change its description from LB Ethylene FD USG cts/lb WAvg to LB Ethylene FD USG Mo01 WAvg

Platts will further add new assessments to reflect assessments for delivery in Month 2 as follows:

AAOSS00 LB Ethylene FD USG Mo02 AAOSS03 LB Ethylene FD USG Mo02 MAvg (monthly average) AAOSS05 LB Ethylene FD USG Mo02 WAvg (weekly average)

The daily assessment will appear on PCA 870 and the weekly average will appear on PCA 301.

Please direct any questions or comments to petchems@platts.com with a copy to pricegroup@platts.com.

Please provide a clear indication if comments are intended for publication by Platts for public viewing.

Platts will consider all comments received and will make these comments available on request.