20111013 Ver 1_Staff Comments_20120126

Strickland, Bev
From: Mcmillan, Ian
Sent: Thursday, January 26, 2012 11:39 AM
To: Dennison, Laurie; Strickland, Bev
Subject: FW: Martin Marietta Questions
DWQ No. 11 -1013
E -mail correspondence to and from this address may be subject to the
North Carolina Public Records La-,v and may he disclosed to third parties.
From: Adams, Amy
Sent: Wednesday, January 25, 2012 11:03 AM
To: Mcmillan, Ian
Subject: Martin Marietta Questions
En
What is your comfort level with their assertion that there will be no adverse finfish impacts from the discharge. If they
sampled and found no adults during their sampling, shouldn't they still at least have an idea of the types of habitats
these anadromous fish generally utilize for spawning and compare that to the expected habitat available after the
discharge?
I do not see in the permit application package where anyone has made a definitive call as to impacts on the benthic
community. CZR did a characterization analysis, but I have not found any conclusions that the 9MGD discharge will
affect /not affect the community. It is my belief that there may be an increase in benthic community from the discharge
due to the increase in pH, which is a limiting factor in the current system. But I have seen no conclusions from K/H or
CZR. Should we have a benthic monitoring condition to address this?
I have not seen any flow data or anticipated flow rate increases. Has any flow data been presented or discussed. Will
the new flows be strong enough to move the saline /freshwater interface from its current designated location? What is
the zone of influence of this discharge? How far downstream will changes be reasonable expected before this discharge
disperses with the ambient water? Is there any predictive modeling that could be used to address the flow issues?
Should they have collected flow data and given us a projected impact in flow rate?
Amy Adams
Environmental Senior Specialist
401NVetlands Unit
NC Division of Water Quality
Surface Water Protection
Washington Regional Office
www.ncwatergualitV.org

252.946.6481
**E -mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. **