Storm water is not a friend to Coast Walk Trail. Luckily, Brenda Fake is. The La Jollan, who lives adjacent to the trail, is attempting to raise $18,000 to $20,000 to repair major erosion that has occurred due to rains and pedestrian use. So far, she's got $4,500. Friends of Coast Walk Trail — which Fake founded in 2011 with Paul Teirstein and residents north of Coast Walk Bridge — wants to resurface the trail, level the walking path and remove invasive vegetation along the trail, which runs west of Torrey Pines Road between Coast Walk and Cave Street.