You can read all 349 pages (http://www.montgomeryparks.org/uploads/2016/08/2017PROS-PUBLIC.HEARING.DRAFTandAPPENDICES.pdf).
Make you own comments or submit something like the following in your own words to Planning Board Chair Anderson at email@example.com
"MNPS leads dozens of field trips every year in Montgomery County’s “Best Natural Areas” and other natural areas in the parks. Our members participate in these field trips to identify and enjoy the diversity of native plants. That diversity has significantly declined in recent years as natural areas are damaged by non-native invasive plants overrunning many areas, uncontrolled stormwater destroying steam valley habitats, and deer wiping out understory plants and causing unnatural alteration of native plant communities. MNPS advocates increased stewardship of existing natural areas and the acquisition of additional natural areas before they are lost to development."