...Chevron is the largest private oil company in the country thanks to its investments in the Karachaganak and Tengiz fields...For nine years the residents of the village of Berezovka...located...five kilometers from the Karachaganak Oil and Gas Condensate Field, have been fighting for relocation to an environmentally clean and safe location...[T]he health of the 1300 residents...radically worsened...The residents feel the impacts of hydrogen sulfide and other toxic chemicals that are connected with oil extraction and refining...[T]he data from the state air monitors and the Karachaganak Petroleum Operating BV Consortium(KPO)...state that air pollution does not exceed the acceptable norm...At the end of 2010, sinkholes began to appear in the earth around Berezovka and in the village itself. The residents are concerned that this could be connected with the expansion of operations at Karachaganak...Chevron states that it is only one of the members in the KPO consortium and not its operator...Tengizchevoril (TCO), where Chevron has a fifty percent share, has a long history of inflicting harm on the environment...The other problem is the conditions for workers employed by contractors who work at TCO...In January...local workers of the Turkish company Senimdi Kurylys held a strike, demanding that their monthly salaries be increased...Salary discrimination and discrimination in working conditions is not unusual among contracting companies working for TCO. TCO...states that the company does not have the right to interfere in the internal affairs of its contracting companies. [The Business & Human Rights Resource Centre invited Chevron and Karachaganak Petroleum Operating BV Consortium (KPO) to respond but they did not do so.]