Douglas County commissioners will review the latest plans for mining at the Big Springs Quarry on the west edge of the county.

Commissioners will review the request when they meet at 6:35 p.m. Wednesday at the Douglas County Courthouse, 1100 Massachusetts St.

Mid-States Materials, LLC, which owns and operates the quarry that straddles the Douglas-Shawnee county line, is asking to revise the phasing schedule at the quarry. The company is currently operating in an area known as Phase 3, which is south of North 1700 Road and east of East 50 Road.

The company is asking to change the schedule in its conditional use permit to move directly west across East 50 Road, in an area currently marked as Phase 6, which abuts the county line.

Mid-States wants to begin quarrying that area at the same time it opens an adjacent area in Shawnee County. A letter from the company to the Lawrence-Douglas County planning department indicates it wants to service both tracts with a single haul road instead of building separate haul roads in both Douglas and Shawnee counties.

In other business, the commission will consider consent agenda items that include:

• Approval of 2012 township annual reports.

• A funding agreement for a project to upgrade Kansas University’s emergency radio system at a cost of $320,593, to be paid by the county and reimbursed by the university.

• A 10-year tower lease with TFM Comm Inc., for use of a tower and facilities at the Flair Tower site on

North 1100 Road.at a base rate of $850 per month.

• And the purchase of six 2013 Ford police interceptor utility vehicles for the Sheriff’s Office at a cost of $151,218.