If you are thinking of any kind of career advancement, you better be friends with or related to the right people at CH2M Hill... It can be one of the bigger clients or someone in the management, but it's definitely a prerequisite... That's the only way to progress here, no matter how good you are at your job...
If you are here on your own, the only thing that you can expect is negligible mentoring and non-existent career development...
Also, it's very easy to see that the company is in financial troubles... Some of the biggest projects have been mismanaged by current leadership... This most likely means more layoffs in near future...