Although results are still out on government tests seeking reasons for a massive fish kill in the Ogeechee River, local citizens conducting tests on their own found “high levels of sodium hydroxide” in water samples, said Ogeechee Riverkeeper Dianna Wedincamp. Also known as lye, sodium hydroxide is used in several industries, including the processing of cotton and production of rayon. Wednesday, dead fish were found as far south in the Ogeechee River as Morgan’s Bridge on Ga. 204.