20210740 Ver 1_WRC Comments_20211008

Homewood, Sue
From: Munzer, Olivia
Sent: Friday, October 8, 2021 7:50 AM
To: Homewood, Sue
Subject: RE: project list
Follow Up Flag: Follow up
Flag Status: Flagged
Good morning Sue,
I hope you are doing well and that you are doing something fun while on leave.
I looked over the Austin Landfill. Its hard to see what is happening with the intermittent stream on the updated
engineering drawing. I also can't tell if the sediment basin is dumping right into a stream, but I am glad they updated the
plans not to have the sediment basin in the wetland. There are species nearby along the Haw but since it is an
intermittent stream, there isn't a concern except for sediment and erosion control issues. Here are my two
recommendations.
• All stormwater outlets should drain through a vegetated upland area prior to reaching any stream or wetland area.
Sufficient retention designs should be implemented to allow for the slow discharge of storm water, attenuating the
potential adverse effects of storm -water surges; thermal spikes; and sediment, nutrient, and chemical discharges
• Erosion and sediment control measures should conform to the High Quality Water Zones standards stipulated in the
NC Department of Environmental Quality Erosion and Sediment Control Plan
(https://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/erosion-
sediment-control-planning-design-manual). Sediment and erosion control measures should use advanced methods
and installed prior to any land -disturbing activity. The use of biodegradable and wildlife -friendly sediment and
erosion control devices is strongly recommended. Silt fencing, fiber rolls and/or other products should have loose -
weave netting that is made of natural fiber materials with movable joints between the vertical and horizontal
twines. Silt fencing that has been reinforced with plastic or metal mesh should be avoided as it impedes the
movement of terrestrial wildlife species. Excessive silt and sediment loads can have detrimental effects on aquatic
resources including destruction of spawning habitat, suffocation of eggs, and clogging of gills.
Olivia Munzer
Western Piedmont Habitat Conservation Coordinator
NC Wildlife Resources Commission
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