2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)
11B-1008.2.6.2 Use zones.
Ground surfaces located within use zones shall comply with ASTM F 1292 (1999 edition or 2004 edition).
Ground surfaces located within use zones shall comply with ASTM F 1292 (1999 edition or 2004 edition).
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