GAS PURCHASE AGREEMENT DATED MARCH 31, 1999 BETWEEN NORTHEAST OHIO GAS MARKETING, INC., AND ATLAS ENERGY GROUP, INC., ATLAS RESOURCES, INC., AND RESOURCE ENERGY, INC.

Exhibit 10.5

GAS PURCHASE AGREEMENT DATED MARCH 31, 0000

XXXXXXX XXXXXXXXX XXXX GAS MARKETING, INC., AND

ATLAS ENERGY GROUP, INC., ATLAS RESOURCES, INC., AND

RESOURCE ENERGY, INC.