1st quote... "Cost estimates for the city’s 20-mile, 21-station rail project from East Kapolei to Ala Moana Center dra­matically escalated from $5.26 billion in late 2014 to nearly $10 billion now, INCLUDING FINANCING COSTS. The project is being funded mostly from the half-percent excise tax surcharge on Oahu, which generates about $250 million per year."

10 billion for construction costs of 8.2 billion. The 10 billion is the projected revenue so by definition it includes financing costs in its 1.8 billion contingency. 

2nd article says the same but includes a quote from the city about the contingency... "City officials say the House version isn’t going to provide enough money because it doesn’t factor in between $1.4 billion and $2 billion in debt service on bonds that are needed for the project to maintain cash flow in the next few years when the greatest costs are being incurred."

Your citations validate what I say while verifying your lies. At this point in the black - paid up.