The county of Gwynedd is made up of three distinct areas of Arfon, Dwyfor and Meirionnydd.
But Arfon Access Group, which has campaigned for the changes, say they are a step in the right direction.
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Hywel Williams, Plaid Cymru MP for Arfon, hinted strongly that Plaid would consider working with Labour to form a government.
The Cilgwyn site at Carmel near Caernarfon, deals with waste from thousands of homes in the Arfon and Dwyfor areas.
BBC: NEWS | UK | Wales | North West Wales | Waste tip faces licence problem
"We have been told verbally that our two applications have been rejected, " said Medwyn Williams, from the operators Cwmni Gwastraff Mon-Arfon Cyf.
BBC: NEWS | UK | Wales | North West Wales | Waste tip faces licence problem
The disappearance of the seats of Ynys Mon and Arfon might raise eyebrows within Plaid Cymru, who are strong challengers in both.
Arfon is the most densely populated and the county council head offices are in Caernarfon in the shadow of the ancient castle.
Wrexham councillor Arfon Jones petitioned the assembly last year calling for an exclusion zone that would also stop takeaway vans trading near schools.
Plaid's Arfon MP, Hywel Williams, could find himself fighting for selection in the new Gwynedd seat against his colleague Elfyn Llwyd, the MP for Dwyfor Meirionnydd.
The Arfon Access Group's secretary, Vin West, said things had improved since the group complained in 2008 about a lack of consultation when the work on the square began.
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In his Early Day Motion (EDM), Mr Williams, who represents Arfon, says "the relationship between the BBC and the PRS raises questions about neo-monopolies in the music industry", and calls for an investigation.
Bu AC Arfon Alun Ffred Jones yn dadlau fod yn rhaid i Gymru ddarganfod ffyrdd gwell o godi arian ar gyfer prosiectau cyfalaf fel bo busnesau yn medru cyflogi staff a datblygu sgiliau pobl ifanc.
Er mwyn lliniaru ar y gost ychwanegol o gynnal arwerthiant o'r fath, mae pwyllgor lleol y Gymdeithas wedi penderfynu uno arwerthiannau'r ddwy sir, sef Dinbych ac Arfon (sy'n cwmpasu Sir Gonwy, rhan o Sir Ddinbych a rhan dwyreiniol o Wynedd) i gynnal un arwerthiant fawr.
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