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Source: San Bernardino County Sun, Calif.迷你倉新蒲崗Sept. 04--HINKLEY -- Pacific Gas and Electric Co. is proposing changes to a whole house replacement water system here in the wake of a first-of-its-kind proposed drinking water standard for chromium-6.Last year PG&E voluntarily introduced what it calls "an unprecedented program" that offers a sophisticated treatment system to remove chromium-6 from the residential wells of town residents.Residents could participate if their homes were within a mile of the chromium-6 plume boundary and their wells had any detection of chromium-6.On Aug. 23, the state of California issued a proposed chromium-6 drinking water standard of 10 parts per billion.A lengthy public comment period has begun and it might be a year or more until that standard is adopted -- one which would be the first of its kind in the nation."PG&E believes future eligibility for the program should be modified pending the final drinking water standard," wrote Sheryl Bilbrey, PG&E's director of chromium remediation.The letter, directed to Patty Kouyoumdjian, executive officer of the Lahontan water control board, seeks to eliminate the one-mile buffer zone and require that future program participants live within the plume boundary and that their domestic well has a chromium-6 detection level above 3.1 parts per billion."Residents who currently are eligible for the program will remain i迷你倉出租 the program with no changes," she wrote Tuesday.PG&E's program guarantees that the level of chromium-6 in its replacement water is more than 800 times lower than the standards currently applied to other California residents.During the 1950s and early 1960s, PG&E used chromium-6 to protect the metal of its cooling towers used to keep natural gas flowing at its Hinkley compressor station.Periodically the cooling tower liquids, including chromium-6, were dumped into unlined ponds, where chromium-6 seeped through the dirt and entered the large underground water supply beneath Hinkley.The resulting plume is believed to be more than seven miles long and two miles wide."PG&E is committed to cleaning up the chromium-6 caused by its historical operations," Bilbrey wrote.Top executives with the Lahontan Regional Quality Control Board Water could not be reached for comment Tuesday."This is way too premature," said Lester White, a longtime Hinkley resident who is head of a community committee that represents residents at meetings with PG&E and the water board."They are trying to duck their responsibilities," said Daron Banks, who serves on the Community Advisory Commission, along with White.Copyright: ___ (c)2013 the San Bernardino County Sun (San Bernardino, Calif.) Visit the San Bernardino County Sun (San Bernardino, Calif.) at .sbsun.com Distributed by MCT Information Services迷你倉
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