Columbia Gas plans will begin Wednesday a rotating shut-in of interrruptible production that will continue through the summer at the A05-Delmont aggregation point in the southern part of Market Area 36. This is due to excessive line pressure resulting from decreased market requirements, the pipeline said. Columbia’s field personnel will notify affected producers.

As much as 100,000 MMBtu/d at many meters could be affected by Wednesday-Thursday maintenance at the Earlville Compressor Station in Zone D, Northern Natural Gas said.

Dumas Station will be down Wednesday for annual Department of Transportation inspections, El Paso said. Capacity from Dumas east will be limited to 160 MMcf/d instead of 120 MMcf/d as stated in a previous bulletin board notice.

Florida Gas Transmission began a second week of having an Overage Alert Day notice in effect for its market area (see Daily GPI, May 7), but loosened the tolerance for negative daily imbalances Tuesday from 15% to 20%.

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