This excerpt taken from the TGS 20-F filed Jun 27, 2006.
QUALITY AND DELIVERY CONDITIONS
All the Ethane produced at TGS plant in General Cerri and supplied to PBB shall meet the following specifications:
LIMIT VALUE (Maximum Daily Average)
Min. 95.5% weight (ASTM D-2505)
Max. 1,5 % weight (ASTM D-2505)
Propane and Superior
Max. 3% weight (ASTM D-2505)
Max. 100 PPM (parts per million) volume
Max. 60 PPM volume (ASTM D-2505/IR)
A) Max 200 PPM volume (the water content of the product is measured with an Ametex 3050 OLV hygrometer with detection by quartz crystal oscillator (for flows inferior to 1050 MT/day)
B) Max 240 PPM volume (the water content of the product is measured with an Ametex 3050 OLV hygrometer with detection by quartz crystal oscillator (for flows superior to 1050 MT/day)
Ethane delivery pressure shall range from 28.5 manometrical Kilograms per square meter, and the 35,4 manometrical Kilograms per square meter, and the delivery temperature shall not be in excess of forty-nine centigrades (49°C).
In the event that the product delivered by TGS, whatever the cause, should not meet the agreed specifications, PBB must notify TGS of such circumstance within six (6) hours of recording the Ethane off-specifications and shall be entitled to interrupt the reception of Ethane or restrict the daily quantity of the Ethane off-specifications to improve its quality by means of its mix with Ethane from other sources.