Published July 27, 2022 at 600 × 321 in A Bit of Boring Safety The L.A. Metrorail Purple Line is extending to the V.A. Hospital in Westwood, the subject of a Cal/OSHA variance for boring operations. The L.A. Metrorail Purple Line is extending to the V.A. Hospital in Westwood, the subject of a Cal/OSHA variance for boring operations.