20141310 Ver 1_USACE Inspection Notes_20160223

Homewood, Sue
From: Bailey, David E SAW <[e-mail]>
Sent: Tuesday, February 23, 2016 12:27 PM
To: Homewood, Sue
Subject: RE: McConnell Center road crossing compliance visit; SAW -2013-02235
Attachments: 20160219_124352_resizedjpg; 20160219_124402_resizedjpg; 20160219_124524
_resizedjpg; 20160219_124547_resizedjpg; 20160219_124733_resizedjpg; 20160219_
124908_resizedjpg; 20160219_124952_resizedjpg; 20160219_125014_resizedjpg;
20160219_125020_resizedjpg; 20160219_130936_resizedjpg
-----Original Message -----
From: Bailey, David E SAW[mailto:[e-mail]]
Sent: Monday, February 22, 2016 8:23 AM
To: Homewood, Sue <[e-mail]>
Subject: McConnell Center road crossing compliance visit; SAW -2013-02235
Hi Sue. Hope you had a good weekend. Just an update to let you know that I did visit the above project on the way back
to the office on Friday. The pipe is installed including the upstream headwall. The downstream headwall is present, but
not installed yet. The pipe itself looks to be the appropriate length and appears to be buried —V. The rip rap pad may be
up to 10' too long (based on pacing, didn't have a tape with me) and is not keyed in flush with the stream bed. My permit
doesn't specifically address the above but the plans do show the rip rap extending no higher than the top of the stream
bed elevation. Basically, the top layer of rip rap appears to be sitting on top of the stream bed.
The water upstream of the crossing was fairly clear whereas the water coming out of the pipe was turbid. However, upon
further investigation the turbid water was entering the stream from the east side of the crossing via a rip rap lined ditch
approximately 5-10' upstream of the pipe inlet. This water was coming from a stormwater pipe that seemed to be
discharge from a stormwater pond related to the construction ongoing on the parcel east of our subject crossing. The
water in the stormwater pond was extremely turbid, though I couldn't immediately identify any turbid water entering the
stormwater pond.
I have pictures of all of this and will forward them soon.
Also, I noticed that there is a crossing over our subject stream at the far upstream end of our parcel just south of 1-40.
The surface of the crossing is muddy and very recently used; I originally thought that this might be a violation. However,
upon further inspection this crossing had mature vegetation on the side slopes and large roots visible in the fill, so it must
have been there for several years. I appears that the equipment used to clear our site, as well as the property to the
west, used this existing crossing. Also, the pipe under this crossing is very old and mangled at the inlet, resulting in severe
active erosion around the inlet. Nothing for the Corps to do here, just a heads up.
Lastly, I walked the boundary of the parcel and found either silt fence or vegetated diversion berms in place along the
entire perimeter. Buffers of at least 30' are present throughout. There appears to be no ongoing work on the parcel to
the west, other than the clearing which finished up weeks ago. However, there is an existing pond basin on this tract that
was drained several years ago and has grown up in cattails and wetland trees (green ash?/red maple?). I couldn't see
much into the tract, but it appears that they may have converted some of this old pond basin into a sediment basin, as
there were several rows of silt fence lined across this area. We may want to look at a little more closely soon.
Let me know if you have any questions. I'd like to discuss with you before pursuing the rip rap pad issue. Thanks.

-Dave Bailey
David E. Bailey, PWS
Regulatory Project Manager
US Army Corps of Engineers
CE -SAW -RG -R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Phone: [phone], Ext. 30.
Fax: [phone]
Email: [e-mail]
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we
continue to do so, please complete the Customer Satisfaction Survey located at
Blockedhttp://corpsmapu.usace.army.miI/cm_apex/f?p=136:4:0.

;r
� i �'-
,.;

h ";

a �'" . ^�.