Source: Injin Labaran Injiniya - ENR.com
Kamar yadda John Kammeyer, PE, mataimakin shugaban hukumar Tennessee Valley Authority na kone kwal, ya hau zuwa tashar wutar lantarki ta kwal ta KingA a karfe 3:30 na safe a ranar 23 ga Disamba, 2008, “kuma ya ga duk abin da ke cikin dabbar” - ya zama takamaiman , 5.4 miliyan cu yd na tokar kwal daga kogin tsire-tsire - Kammeyer ya san nan take an sami gazawar injiniya.
"Ban taɓa ganin irin wannan ba a da," in ji shi game da rigar tokar kwal da ta zubo daga wani ƙyauren da ya gaza daren jiya, ya cika Kogin Emory da tafkunan da ke kusa, ya rufe hanyoyi da hanyoyin jirgin ƙasa, da lalata kadada 300 na ƙasar. shuka da ragowar toka.
Shekaru biyu da rabi bayan haka, har yanzu ba a sake dawo da yankin gaba daya ba daga abin da masana suka kira mafi munin bala'in muhalli irinsa. Amma ma'aikata sun sami damar haƙa duk wata muhimmiyar tokar - kusan miliyan 3.5 da rabi - daga kamfanin Emory, wanda tun daga nan aka sake buɗe shi kusa da inda kwararar tokar. TVA yanzu tana mai da hankali kan abin da ta kira "ba mai mahimmanci ba" cire ash a ƙasa. Tsabtace mai, wanda aka kiyasta ya kai dala biliyan 1 zuwa dala biliyan 1.2, ana sa ran kammala shi a shekarar 2014.
"Za mu iya ganin karshen a gani," in ji Bob Deacy, wani babban mataimakin shugaban TVA mai kula da tsabtace Kingston. Gwajin iska da ruwa ba su nuna wata babbar matsala ta dogon lokaci ba tare da ƙarfe masu nauyi ko wasu gurɓatattun abubuwa, kodayake ana ci gaba da gwaje-gwaje. Ana ganin haɗiya suna yawaita bakin kogi; ma'aikata a shafin sun ce kamun kifi bai taba kyau ba.
Amma tsabtace shine rabin labarin.
TVA tana kashe dala biliyan $ 2 don daidaitawa da kuma rufe danshi a dukkan tsire-tsirenta da kuma canza tokar kwalta zuwa busassun ajiya, wani babban buri wanda ya hada da gina wani bango mai zurfin zurfin kafa mai zurfin kafa 80 a kusa da kududdufin ash-ash na kogin don hana gazawar gaba. Kafin shekara ta 2008, ba a kula da tafkunan ruwan ash-TVA na yau da kullun ba, kuma sau da yawa gudanarwa ba ta kula da jan tutoci game da tafkunan, a cewar wani rahoton TVA na 2009.
Dogaro da sakamakon dokokin da ke gaban Hukumar Kula da Muhalli da za ta sanya zubar da kwal a ƙarƙashin kulawar tarayya, ƙoƙarin TVA na iya nuna abin da waɗancan sabbin ƙa'idodin ke buƙatar wasu abubuwan amfani da tsire-tsire. A halin yanzu, game da shuke-shuke 100 na Amurka suna da kusan rashin ruwa na 676 don ragowar kwal-ash, in ji EPA.
Koyaya, ba za a iya yin canje-canje a wasu abubuwan amfani ba ko dai a fitar da dokar EPA ko kuma Majalisa ta zartar da dokar da za ta ci-wuta.
Jim Roewer, babban darekta, Utility Solid Waste Activities Group, mai kula da masana'antar wutar lantarki ya ce "Ganin abin da ke kan gungumen azaba da kuma yawan kuɗi, masu amfani ba sa son a hukunta su saboda yin canje-canje waɗanda ba sa cikin ƙa'idodin EPA." rukuni
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