Galaxy coach Bruce Arena Tuesday criticized a lack of a “policy” for adding stoppage time to MLS games in the wake of last weekend’s 1-0 loss to Colorado that saw the Rapids’ winner come deep into the five added minutes at the end of the second half.

“The game going five extra minutes was a glaring mistake by the referee and assistant referee,” he said Tuesday after Galaxy practice. “They don’t have a (stoppage time) policy, so there’s no consistency with that. What’s going to be required is they establish a policy so everyone is aware of what it is.

“I thought it was going to be two extra minutes, possibly three, then it got to five — it was way off,” he added. “Minutes at the end of the game can not be a freelance thing. There has to be an established criteria how you do that.”

Arena criticized the fourth official in particular for not paying enough attention to the game and being more concerned with players standing in the technical area than watching the clock.

But, he conceded, the Galaxy had to take a measure of blame for the road loss at altitude that came in just the second game of the season when conditioning remains an issue.

“We weren’t good, they weren’t good, it wasn’t a good game,” Arena said. “No one deserved to win that game to be honest with you. … We’ve got to take responsibility for conceding the goal and responsibility for how we played — we didn’t play well.”