When Pam Graham takes a walk around her Topaz Lake neighborhood, she makes sure she's wearing her "all-terrain" shoes, has plenty of daylight, and keeps her eyes on the ground.The translucent beauty of the lake and the mountains goes largely unnoticed as Graham navigates the rocky and uneven roads that fan out from her home on Mark Twain Avenue.She is careful not to stumble or twist an ankle.Graham, president of the Topaz Lake Homeowners Association, believes the roads present a safety hazard for the 300 residents in the community. Recently she brought her concerns to Douglas County commissioners."This is a …