Gastem/St-Hyacinthe Program: La Presentation Horizontal Well Spudded

Gastem (TSX VENTURE:GMR) is pleased to announce that the La Presentation HZ1A
well on the 37,247 hectare Canbriam Energy/Gastem St-Hyacinthe Property was
spudded Saturday, May 15, 2010. Planned total depth is 3,020 m, with a
horizontal leg of 1,200 m, and should be reached in approximately 33 days. 


The La Presentation HZ1A is the first of three horizontal wells planned for this
exploration block targeting the Ordovician Utica shale. The horizontal leg of
the well is to be frac stimulated using multi-stage technology. Results are
expected in early fall. Pipeline infrastructure is present on the property. 


"With the horizontal program for La Presentation now underway, it is believed
that we will be able to confirm our economic expectations for the area this
year," commented Mr. Raymond Savoie, President and CEO. "All indications are
very positive and all involved are highly motivated."


Gastem is an independent oil and gas exploration and development company based
in Montreal. The company holds exploration and storage permits and rights in the
St. Lawrence Lowlands, the Gaspe Peninsula and the Magdalen Islands in Quebec as
well as rights and interests in New York State and Virginia.