Salvo collected four birdies, three bogeys and 11 pars to finish tied for sixth with Whitney French of Dana Hills.
Salvo said she avoided making mistakes.
“I can’t complain because I was under par,” said Salvo, who won her fourth straight Mission League individual championship in October and makes her fourth trip to the WSCGA. “My pars were good, but my birdies were better.
“I was able to contain my mistakes. I didn’t blow up on any holes. My bogeys were covered by my birdies. I missed the greens a couple of times, but I was able to chip my shots closer to the hole.”
The Harvard University-bound Cho, who helped the Falcons win their second consecutive Pacific League championship, notched one birdie and 13 pars to advance with a hole to spare.
Cho finished in a five-way tie for 19th with Amelia Ek of Cypress, Grace Kummerfeld of Martin Luther King, Denyse Neville of Riverside Poly, St. Monica’s Taylor Yoshitake and Noelle Zavaleta of Long Beach Wilson.
“I hit the ball decent, but my driver could have been better,” Cho said. “I was a little nervous, but I wanted to make it to the next level.”
Crescenta Valley sophomore Katie Park, who captured her first league individual championship last month, saw her season conclude after she carded an 83. The cut was 77.
Burroughs’ Emily Tubert, a sophomore, was the other Pacific League athlete to move on to Murrieta. Tubert, who fired a 74 to finish in a three-way tie for 11th, recorded an eagle on the par-five, 412-yard No. 6 hole.
Tiffany Lua of Los Altos and Lee Lopez of La Serna each shot 69 to take first. However, Lopez edged Lua in a one-hole playoff to earn low-medalist honors.
The top six scores in Monday’s championship will qualify for the WSCGA-CIF State Championship, which will take place at 8 a.m. Thursday at Poppy Hills Country Club in Pebble Beach.