Gasco
- ------
Energy

For Release at 9 AM EDT on Tuesday, July 5, 2005

                     GASCO ENERGY PROVIDES OPERATIONS UPDATE
     SECOND QUARTER NET PRODUCTION UP 92% OVER FIRST QUARTER OF 2005 AND UP
                        116% OVER FIRST QUARTER OF 2004

DENVER - (PR Newswire) - July 5, 2005 - Gasco  Energy,  Inc.  (AMEX:  GSX) today
provided an interim  operations  update on its Riverbend Project in Utah's Uinta
Basin.

Quarterly Production
Estimated  cumulative  net  production  for the quarter  ended June 30, 2005 was
281.9 million cubic feet equivalent  (MMcfe),  an increase of 92% over the first
quarter of 2005 production of 147.1 MMcfe,  and 116% above second quarter 2004's
production  of 130.3 MMcfe.  Net  production  increases  are  attributed  to the
completion  of new wells  during the  quarter  and to a higher  average  working
interest  in those  wells  partially  offset by normal  production  declines  in
existing wells.

Gross  production  from the second  quarter of 2005 increased 55% to 863.4 MMcfe
over gross production of 558.5 MMcfe for the first quarter of 2005.

Gasco Energy Net Production Detail



                                  Three months ended                 Three months ended                Six months ended
                                  ------------------                 ------------------                ----------------
                                 June 30,    March 31,              June 30,    June 30,             June 30,   June 30,
                                  2005        2005      % Change      2005        2004    % Change     2005      2004    % Change
                                  ----        ----        ------     -----        ----     -------     ----      ----      ------

                                                                                                  
Natural Gas / MMcf                269.3       137.8        95%       269.3      122.7       119%       407.1     249.5       63%
Oil / Bbls                        2,091       1,549        35%       2,091      1,265       65%        3,640     2,785       31%
Natural Gas Equivalents / MMcfe   281.9       147.1        92%       281.9      130.3       116%       429.0     266.2       61%

- ------------------------------------------------------------------------------------------------------------------------------------


Drilling Activity
During the second  quarter of 2005 Gasco  spudded  six gross wells (3.9 net) and
reached total depth on four gross wells (1.9 net). The Company  continues to run
three rigs,  which were in the process of drilling  three wells as of the end of
the quarter. Year-to-date Gasco has spudded 11 gross wells (6.8 net) and reached
total depth on nine gross wells (4.8 net)  keeping the Company on track to drill
and complete the previously  announced target of 20 gross wells (13 net) for the
full-year 2005.

Completion Activity
Gasco conducted initial completion operations on seven wells and re-entered four
wells to complete  behind-pipe  pay zones during the second  quarter of 2005. At
June 30, 2005, Gasco had 30 gross wells on production, and one well flowing back
frac fluids from recent  completion  operations.  During the first six months of
2005,  the  Company  conducted  initial  completion  operations  on 12 wells and
re-entered eight well bores to complete behind-pipe pay.

The Company's current drilling strategy entails the development of a well in two
mobilizations.  In the first  mobilization  a well is completed in the Blackhawk
and Lower  Mesaverde  formations  in five to six frac  stages.  The well is then
produced until flowing pressures have dropped  sufficiently to allow substantial
production  contribution  from the uphole zones.  This usually occurs six months
from initial production. The well is then re-entered and frac'ed in four to five
stages in the Upper Mesaverde and Wasatch formations.



Mike  Decker,  Chief  Operating  Officer  said,  "While  our  production  growth
validates our play concept,  equally  important  are  operational  improvements.
During 2004, the first frac crew  mobilization on wells drilled to the Blackhawk
only completed the Blackhawk  Formation in order to gather important  production
and  pressure  decline  data.  After  sufficient  data  was  gathered,  a second
mobilization  added the Lower  Mesaverde  and still  later a third  mobilization
added the Upper  Mesaverde  and  Wasatch.  Well data  gained from  drilling  and
completing these 2004 wells now allows Gasco to complete  Blackhawk wells in two
mobilizations,  thereby reducing capital costs. We expect to identify additional
operational efficiencies in the project to help further reduce drilling time and
completion costs while increasing estimated ultimate recoveries in our wells."

Second Quarter Financial Results
Gasco  expects to announce its second  quarter and year-to-date  results on or
before  August 9,  2005.  The  Company  will  schedule a  conference  call to be
announced at a later date to discuss quarterly and year-to-date  operational and
financial progress.

About Gasco Energy
Gasco  Energy,  Inc.  is a  Denver-based  natural gas and oil  exploitation  and
development  company  that  focuses on  natural-gas-rich  prospects in the Rocky
Mountain area of the United States. The Company currently is active in the Uinta
Basin in Utah and controls  acreage in the Greater Green River Basin of Wyoming.
To learn more, visit www.gascoenergy.com.

Forward-looking statements
Certain statements set forth in this press release relate to management's future
plans,  objectives and expectations.  Such statements are forward-looking within
the  meanings  of Section 27A of the  Securities  Act of 1933,  as amended,  and
Section 21E of the Securities  Exchange Act of 1934, as amended.  All statements
other than  statements  of  historical  facts  included  in this press  release,
including,  without  limitation,   statements  regarding  the  Company's  future
financial position,  potential resources,  business strategy, budgets, projected
costs and  plans  and  objectives  of  management  for  future  operations,  are
forward-looking  statements. In addition,  forward-looking  statements generally
can be  identified  by the use of  forward-looking  terminology  such as  "may,"
"will," "expect," "intend," "project," "estimate,"  "anticipate,"  "believe," or
"continue"  or  the  negative  thereof  or  similar  terminology.  Although  any
forward-looking  statements contained in this press release are to the knowledge
or in the judgment of the officers and directors of the Company,  believed to be
reasonable, there can be no assurances that any of these expectations will prove
correct  or  that  any  of  the  actions   that  are  planned   will  be  taken.
Forward-looking  statements  involve known and unknown  risks and  uncertainties
that may cause the Company's actual  performance and financial results in future
periods to differ materially from any projection, estimate or forecasted result.
Some of the key  factors  that may cause  actual  results to vary from those the
Company expects include inherent  uncertainties in interpreting  engineering and
reserve or  production  data;  operating  hazards;  delays or  cancellations  of
drilling  operations  because of weather and other natural and economic  forces;
fluctuations  in oil and  natural  gas prices in  response to changes in supply;
competition from other companies with greater resources; environmental and other
government  regulations;  defects  in  title  to  properties;  increases  in the
Company's cost of borrowing or inability or  unavailability of capital resources
to fund capital expenditures;  and other risks described under "Risk Factors" in
Item 1. of the Company's  2004 Form 10-K filed with the  Securities and Exchange
Commission on March 16, 2005.

Contact for Gasco Energy, Inc.: Investor Relations: 303-483-0044


                                     --30--