LPG Refilling pump

Hi! this is soumya dutta a student (fresher)of business management would like to know some information to open a new reliance petrol with an LPG Refilling pump.
Kindly let me know the under-listed details .
1. Land requirement
2. Capital Investment (any optional)
3. Any other information pertaining to the project
4. Legal rules and regulations to petrol pump.
Well i’ve analysed and found some innovative ways in running this business. This project will be beside the Durgapur express highway(west bengal).
An early response in this regard shall be highly appreciated.
Thanking you
soumya dutta
Email i.d: soumyadutta_mba@yahoo.co.in