But it could also reduce house prices in the short term, strip recreational facilities and affect the health of patients at a respite centre.

And there is not enough information on water use or the risk of gas explosions.

These are the findings of the two reports into the data centre published yesterday: the draft environmental impact statement, commissioned by the project's backers, and the health impact assessment produced for ACT Health.

The environmental impact statement examined the project's environmental, socioeconomic and infrastructure impact on the site at Mugga Lane and the surrounding Tuggeranong district.

It found noise levels and air pollutants, such as nitrogen dioxide, would fall within accepted planning criteria and the project would have ''negligible'' impact on vegetation and health.

The statement acknowledged house prices could fall in the short term but no ''noticeable impact'' on property values in the Tuggeranong district was expected.

The statement also considered greenhouse gas emissions and found the data centre and power station would produce about 170,000t of carbon dioxide equivalent every year. Potential light pollution resulting from the centre's 24-hour, seven-day operation was found to be ''negligible''.

The statement said the project would bring more than 400 jobs to the ACT and boost industry turnover by $60million. Consumer spending would boost living standards by $26million, but horse agistment land, walking and equestrian trails would have to be moved.

The health impact report, compiled for the Government by consultants Golder Associates, found more research was needed. Gaps in data also limited the findings of the health impact assessment.

There was insufficient information available on water management, cumulative noise impacts, and the risk of gas explosions or terrorist attacks.