Hello, the Beijing bus line 909 is yet available?

Oh, the public bus 909 still operates.
But from Sanlitun to Qinghe, there is no direct public transportation. And I don't find bus no.909 from the choices.
From Sanlitun, you can take bus no. Te16 to Huixindongqiao West (惠新东桥西) and transfer to bus no.407 to Qinghexiaoyingqiao North (清河小营桥北). After arriving, walk southwest around 900 meters to get to Qinghe Street.

Thanks a lot. I have seen also the option for going to Dongzhimen metro station and take the metro line 13 to Huoying station.

Best regards