How much has the City of Los Angeles spent fighting dust pollution from Owens Lake?

Once a lake bed is exposed, winds kick up ferocious dust storms. Those windblown sediments contribute to air pollution and can contribute to asthma, lung cancer and cardiopulmonary disease, among other health issues. Owens Lake has been among the largest sources of dust pollution in the nation. The City of Los Angeles has spent more than $2.5 billion mitigating the dust through projects at the lake bed such as shallow flooding, seeding and planting vegetation, spreading gravel or tilling the ground.
system
los angeles shahar ne ovence lake se dhul pradooshan se ladane main kitna kharch kiya he?

ek baar ek jhil kaa bistar ujagar hone ke baad, hawaaen krur dhul ke tufaanon ko maarthi hai.ve pavanchakki talachat vaayu pradooshan main yogadan karte hai or anya swasthya muddon ke bich asthma, fefde ke cancer or cardeopulmonary rog main yogadan kar sakate hai.ovence lake raashtra main dhul pradooshan ke sabase bade sroton main se ek rahaa he.los angeles shahar ne jhil ke bistar par pariyojnaon ke madhyam se dhul ko kam karne ke liye $ 2.5 billian se adhik kharch kiya he jaise ki uthle baadh, bone or vanaspati ko ropane, bajri failaane yaa jameen ko til karne ke liye.
user
los angeles shahar ne ovence lake se dhul pradooshan se ladate hue $ 2.5 billian se adhik kharch kiye hai.
assistant
<|system|>
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<|user|>
los angeles shahar ne ovence lake se dhul pradooshan se ladane main kitna kharch kiya he?

ek baar ek jhil kaa bistar ujagar hone ke baad, hawaaen krur dhul ke tufaanon ko maarthi hai.ve pavanchakki talachat vaayu pradooshan main yogadan karte hai or anya swasthya muddon ke bich asthma, fefde ke cancer or cardeopulmonary rog main yogadan kar sakate hai.ovence lake raashtra main dhul pradooshan ke sabase bade sroton main se ek rahaa he.los angeles shahar ne jhil ke bistar par pariyojnaon ke madhyam se dhul ko kam karne ke liye $ 2.5 billian se adhik kharch kiya he jaise ki uthle baadh, bone or vanaspati ko ropane, bajri failaane yaa jameen ko til karne ke liye.</s>
<|assistant|>
los angeles shahar ne ovence lake se dhul pradooshan se ladate hue $ 2.5 billian se adhik kharch kiye hai.</s>
