GS-1
The general service rate used for residential and commercial purposes such as space heating, air-conditioning, water heating, clothes drying and cooking. Annual load factor must be 15 percent or greater. Usage must not exceed 1,250 Dth in any one day during the winter season. Service is subject to a monthly meter-based customer charge. Service on this rate is subject to the Weather Normalization Adjustment.

GSS and GSE
The general service rate used for new service extension areas subject to the same requirements listed above for GS-1 customers.

F-1
Firm sales service for customers with an annual load factor of 40 percent or greater. Usage must not exceed 1,250 dth in any one day during the winter season, which is defined as November through March. Service is subject to a minimum monthly charge and a meter-based customer charge.

F-3
Service is used as a standby or supplement to the use of other fuels. Annual load factor is less than 15 percent. Service is subject to a meter-based customer charge and demand charge. Service is subject to approval by Questar Gas and will not be available in excess of 50 percent of a customer's interruptible load.

F-3 standby service is available to the customer's daily F-3 contract limit. If an F-3 customer uses more gas than its daily contract limit, any additional gas use will be unauthorized and subject to penalty charges. Customers may increase the daily contract limit if additional equipment is added or if operational changes necessitate firm service backup.

F-4
Annual load factor must be 80 percent or greater. Total usage during the previous 36 months must exceed 120,000 Dth per year and be 30 times the highest monthly usage from any December through March. Usage must not exceed 10,000 Dth in any one day during the winter season. Service is subject to a minimum yearly charge and a meter-based customer charge.