I cannot tell you how much "the labor unions are using environmental groups as muscle to shut down the good work the energy industry is doing" sounds like propaganda.
This site has an extensive archive of such DEIR comments and subsequent lawsuits for hundreds of projects around the state. It's just how labor negotiations are done in California, now. All the letters and motions are the same, all the front groups have the same name except with different cities or counties, and they are all drafted by the same law firm. A typical example is at [1].
https://phonyuniontreehuggers.com/
1: https://phonyuniontreehuggers.com/wp-content/uploads/2016/01...