Rochester Resources Ltd. Reports on Exploration Program, 2010

VANCOUVER, 08/05/10 - Rochester Resources Ltd. (TSX VENTURE: RCT) (FRANKFURT: R5I) is pleased to announce that the previously announced diamond drilling program at its Mina Real property continues to return positive results.

Five diamond drill holes have been completed on the Florida NW Vein.

Significant intersections are as follows:

Hole             From          To   Interval    Gold        Silver
                    m           m          m     g/t           g/t
FLNW01-10       45.61       46.19       0.78    1.78          18.0
FLNW02-10  No Significant Assay
FLNW03-10      110.60      111.60       1.00    0.96          33.0
FLNW04-10       48.33       49.09       0.76    0.80  less than 10
FLNW05-10   No Significant Assay

These are downhole intersections and true widths have yet to be determined.

The Florida NW Vein is located approximately 1,000 metres to the north of the Tajos Cuates, and trends north-northwest, roughly parallel to the structure which hosts the Tajos Cuates Vein.

The Mina Real Project is underlain by a complex of Tertiary-age felsic volcanic and tuffs cut by intrusions of similar composition. Alteration varies from narrow zones adjacent to mineralized veins, to broad zones of moderate to intense clay alteration. The broad zones of clay alteration have drill intersections of at least 50 metres.

The mineralized veins trend northwest to north-northwest, with local northeast-southwest trending offsets. These offset structure/veins locally carry gold and silver values. The northwest trending veins are found in shear zones, which vary in width from 2 or 3 metres to broad zones of shearing that represent regional shear zones.

The veins vary in width from a few centimetres to maximum widths of approximately 2 metres and are generally composed of quartz. Individual veins may be single quartz veins or multistage quartz veins, often brecciated and/or sheared. The contact with the wallrock typically is intensely sheared and broken.

'The Florida NW Vein is one of at least six northwest to north-northwest trending vein systems identified on the Mina Real project,' states Eduardo Luna, President and CEO, 'which confirms our belief that the Mina Real property covers multiple, well mineralized vein systems. The current diamond drill program is designed to evaluate the priority vein systems and to continually develop resources for the ongoing mining. We are pleased with the results to date and look forward to continued success with the drilling.'

Additional drill results are being compiled and will be released as they become available.

Andrew Gourlay, P. Geol., is the Qualified Person who has reviewed the technical disclosure in this news release. All samples are prepared and analyzed by the SGS de Mexico, S.S., laboratory in Durango, Mexico, an ISO certified and independent laboratory. Standard reference materials, blanks and field duplicate samples are inserted prior to the shipment from site to monitor the quality control of analytical data.


ON BEHALF OF THE BOARD

Eduardo Luna
President and CEO



About Rochester Resources Ltd.

Rochester represents a pure-play in the exploration and development of high-grade gold and silver properties located in Nayarit, Mexico. The Company is a niche player in Mexico which has assembled an attractive portfolio of properties in the Sierra Madre Occidental Range. This is the largest epithermal precious metal region in the world, hosting the majority of Mexico's large tonnage gold and silver deposits. Current production helps generate cash flow and helps fund our ongoing exploration and development. Rochester is well positioned to advance its Projects and can very quickly become a significant player in Mexico. Rochester has a strong senior management team based in Mexico, a workforce in place to advance its projects through to mine development, and strong financial backing to implement and advance our work programs.


Forward Looking Statements: This Company Press Release contains certain 'forward-looking' statements and information relating to the Company that are based on the beliefs of the Company's management as well as assumptions made by and information currently available to the Company's management. Such statements reflect the current risks, uncertainties and assumptions related to certain factors including, without limitations, competitive factors, general economic conditions, customer relations, relationships with vendors and strategic partners, the interest rate environment, governmental regulation and supervision, seasonality, technological change, changes in industry practices, and one-time events. In addition, the Company has not conducted an independent feasibility study on the Mina Real project which may increase the risk that the planned operations are not economically viable. Should any one or more of these risks or uncertainties materialize, or should any underlying assumptions prove incorrect, actual results may vary materially from those described herein.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.



Contacts:

Rochester Resources Ltd.
Marc Cernovitch
(416) 619-9010
info@rochesterresources.com
www.rochesterresources.com