BAC BacTech Environmental Corporation

BacTech Environmental Corporation ("BacTech" or the "Company"),
(CNSX:BAC)(WKN:A1H4TY) announces that it has obtained approval from Corporacion
Minera de Bolivia, the state-owned mining company for Bolivia ("COMIBOL") and
has begun sampling tailings from the Telamayu mill site in Bolivia.


At this stage there is no agreement in place between BacTech and COMIBOL but if
the sampling results prove positive BacTech will endeavour to create a Joint
Venture with COMIBOL or with a company familiar with doing business in Bolivia
to reprocess the tails at Telamayu.


A total of approximately 200 kg of material will be collected and shipped to
Lima, Peru where it will undergo a) sample characterization, b) assaying, c)
size analysis, d) mineralogy, and e) concentration by flotation. The final
flotation concentrates will be shipped to Inspectorate Labs in Vancouver, Canada
for bioleach test work. The assay results will be released upon receipt prior to
the commencement of the bioleach test work. The sampling program is being
supervised by SGS Laboratories.


COMIBOL has identified 26 different historic mining liability sites that need to
be addressed for various environmental reasons. Of the 26 sites only one has had
a systematic sampling program to date, that being Telamayu in the Department of
Potosi. Representatives of BacTech visited Telamayu in February to investigate
the tailings and the possibility of using bioleaching as a means to clean up the
historic tailings.


Telamayu is a former mill town near the town of Atocha. The Telamayu Mill
processed ore from two mines, Animas and Seven Suyos, that are each situated
approximately 8km from the mill and flotation plant. The mined minerals included
copper, zinc, silver, tin and lead. The mill contained two separate flotation
circuits that produced a lead/zinc concentrate and a zinc/silver concentrate
which were shipped to smelters for metal recovery. Both concentrates were also
passed over shaker tables for course tin recovery. Of concern to COMIBOL is the
mineralogy of the tailings containing arsenic (As), sulphides and other
deleterious metals. Combined with oxidizing sulphides that create sulphuric
acid, the potential for heavy metal contamination is very high. There is ample
evidence on the surface of the stockpile of soluble copper in acidic water as
well as visible sulphide mineralization.


There are two separate tailings stockpiles at Telamayu that sit on either side
of the Allita River. The stockpile next to the mill underwent an extensive
sampling program in 2005. This sampling program, conducted by COMIBOL, included
five 2-meter by 2-meter wells that were hand dug from surface to depths ranging
from 8 to 10 meters. COMIBOL has reported the following average assay results
from the 5 holes:




Silver (Ag)     258 g/t (7.5 oz/ton)                                        
Copper (Cu)     1.05%                                                       
Tin (Sn)        1.18%                                                       



The sample material obtained by COMIBOL was bagged at 1-meter intervals and
stored in the old flotation building. The samples that will be tested by BacTech
will be taken from each sack for assaying. Should BacTech be able to confirm the
abovementioned grades, a similar program would be conducted on the larger pile
across the river.


There is considerable infrastructure at Telamayu. Some of the positive
attributes with regard to building a bioleach facility in Telamayu include an
operating power substation, an operating railway, a large camp and a reliable
water source. There are also two additional tailings sites within 40-60 km that
were not visited on this trip but will be in the near future.


BacTech profile

BacTech Environmental holds the perpetual, exclusive, royalty-free rights to use
the patented BACOX bioleaching technology for the reclamation of tailings and
mining waste materials. In November, BacTech signed a contract with the Mines
Branch of the Manitoba Department of Innovation, Energy and Mines, to remediate
an arsenopyrite gold stockpile situated at the Snow Lake Mine in Snow Lake,
Manitoba. The Company continues to field enquiries globally with respect to
additional opportunities for remediation.


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