google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjl7dGvt_2EAxW4mIkEHZ9KB4oQroIHegUI8AIQBw&url=https%3A%2F%2Fwww.cdph.ca.gov%2FPrograms%2FCCDPHP%2FDEODC%2FOHB%2FHESIS%2FCDPH%2520Document%2520Library%2Fglycols.pdf&usg=AOvVaw1Ts0e6El3qe1AIyPVneVD8&opi=89978449