Welfare check: possibly suicidal 18-year-old reportedly near river behind home in Spring Valley

As discussed during the dispatch call, request for county units to check welfare of an 18-year-old who made suicidal statements and is not answering calls; caller reports he is possibly in/near the river behind his grandmother’s house near W Walnut St in Spring Valley. Family is en route, dispatch approves pinging the phone, and a mental health counselor may be contacted for background if needed.