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          regulations, wastewater 
was managed in treatment facilities and no longer 
dumped into streams. Thus, the cost of pollution was 
captured in the cost of oil production. indeed, clean 
water from these treatment facilities was sold to nearby 
farmers for irrigation. on the other hand, these new 
technologies spewed large amounts of pollutants into 
the air. That air pollution was viewed as a cost of doing 
business; its environmental costs were ignored.
oil prices collapsed in the 1980s. at the same time, 
air-quality regulations were becoming stiffer. operations 
at the Kern river oil field were again tenuous. yet 
once again, technological innovation provided a fix. 
oil companies built facilities to generate electricity that 
were fueled by natural gas, which burns cleaner than 
oil. This electricity was a source of revenue. The electric 
facilities also supplied steam that was used to increase 
production from the wells. in 2000, the Kern river oil 
field produced nearly 40 million barrels of oil. however, 
this level of production could not be sustained. since 
then, production has fallen to less than 30 million barrels 
each year (Figure 15.3).
since 1899, over 2 billion barrels of oil have been 
extracted from the Kern river oil field. scientists estimate 
that this field could yield another 475 million barrels. But 
actually producing that much oil will depend on continuing 
improvements in technology and high oil prices.
like many of the resources upon which we depend, 
oil is being consumed by humans at a rate that is 
thousands of times faster than the rate at which it is 
being produced. What are the factors that influence the 
total amounts of such resources? how do technology 
and economic factors affect the availability of those 
resources? What are the environmental consequences of 
their use? These questions are central to
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