Hey --- Kinda late , but this will be usefull. 

1: Turn off the gas at the meter.

2: Turn on all your gas appliances

3: Find a Union as close to the meter as possible.[ A union is where two pieces of pipe can be put together by a three piece device called a union]. Break a union as close to the meter as possible 

4: Give 1/2 hour for residual gas to air out. 

5: Cut a 4 inch section out of the pipe that is leaking , then unscrew the two pieces left over

6: You now have to measure to replace that pipe with 2 nipples and a union. The measurements will vary depending on size of pipe. 

7: Once you have proper measurements, reinstall piping with Teflon tape or pipe dope, double/triple check for leaks with the gas off. Double triple check for leaks with the gas on. 

Your good to go ....... #mce_temp_url#