§ 591.216 How does OPM combine survey data for the DC area and for COLA areas with multiple survey areas?

5 CFR 591.216(a)(a) Washington, DC, area. For each survey item except shelter, OPM averages separately the prices collected in each of the DC survey areas identified in § 591.215(a) and then averages these average prices together using equal weights to compute an overall average by item for the DC area.

5 CFR 591.216(b)(b) COLA areas with multiple survey areas. OPM computes weighted average indexes at the item, PEG, MEG, and/or overall level by using the corresponding indexes and Federal employment weights from each survey area within the COLA area.