PITTSBURG -- The first step in a regulatory process that could eventually clear the way for a developer to build more than 1,000 houses at the site of a former petroleum tank farm got under way Tuesday night.

Discovery Builders, a Seeno company, wants permission to build Tuscany Meadows on 170 acres west of Somersville and south of Buchanan roads, on unincorporated land between Pittsburg and Antioch.

Leigha Schmidt, project planner with the city of Pittsburg, said the Tuscany Meadows application was submitted in May and preparation of a draft environmental impact report is under way.

The Tuscany Meadows project calls for building up to 917 single-family homes and up to 365 multifamily units. If approved, it would be Pittsburg's largest residential development since the 2,938-unit Seeno-owned San Marco project launched in 1993. To date, more than 900 of those homes have been built.

The purpose of Tuesday's meeting was to gather comment from residents and local agencies to help planners determine the scope of the draft environmental impact report. Written comments can also be submitted through Dec. 28 to the Pittsburg planning department. The draft report will be released next year for public comment.

It is a given that the report will look at things such as traffic, land use, and noise issues. The idea behind the scoping meeting was to gather more specifics about how the report can best address those issues or to suggest other issues that should be taken up

Only one person not associated with the Tuscany Meadows project, Nathanial Taylor, a consultant for the Local Agency Formation Commission, showed up for Tuesday's meeting.

The door was opened for Pittsburg to consider the proposed development as a result of voters approving Measure I in November 2011 by a 4-to-1 margin. The Seeno-backed measure called for extending the city's urban limit line to include the parcel in anticipation of its future development and annexation.

But before that can happen, a final environmental report for the project must be certified by the Pittsburg Planning Commission, and a development agreement would have to be approved by the City Council. Pittsburg would then apply to the Local Agency Formation Commission to annex the parcel.

Regulatory approvals would also be needed from the Contra Costa Water District and Delta Diablo Sanitation District.

Contact Eve Mitchell at 925-779-7189. Follow her on Twitter.com/eastcounty_girl.