2nd Sienna Firestation at 3000 homes (in the DA contract with Missouri City)?

South Sienna Update (from the Houston Business Journal--click title link for full article):

Arizona investor buys land for southern plantation

Houston Business Journal - June 2, 2006
by Allison Wollam


..."With a total of 3,500 homes sold to date, it will take about eight more years to complete the 8,000-home community.

Says Goff: "It was just a timing issue for us."

The proposed Sienna Plantation South will cover four existing municipal utility districts previously approved to issue more than $660 million in bonds to fund infrastructure improvements."...

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Comment: Doesn't the developer's agreement with the city require a second firestation at 3000 homes (not 3500+)?