HomeMy WebLinkAbout20161268 Ver 1_R-3300 Geotech Surveys_20171205Carpenter,Kristi
From: Shaver, Brad E CIV USARMY CESAW (US)
<Brad.E.Shaver@usace.army.mil>
Sent: Tuesday, December 05, 2017 1:04 PM
To: Herndon, T. Mason; Steenhuis, Joanne
Subject: [External] RE: R-3300 Geotech Surveys
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Mason,
I'm heading in the filed in a few minutes so I thought I better respond before I leave.
Below is language taken from the Falcon proposal:
" We anticipate truck, ATV, or rubber track mounted drill rigs equipped with hollow
stem augers and an automatic hammer will be able to access the majority of boring
locations. However, many portions of the site are wooded and will require extensive
clearing for access. Selective clearing will be performed with a rotating drum hydraulic
mulcher ("hydroaxe") and/or by hand with chain saws. Clearing will generally be
performed along the path of easiest access, attempting to roughly follow proposed
alignments, and will be limited to the minimum extent necessary to afford safe passage
and working areas for our drill crews. However, where existing trails come within close
proximity to the proposed boring locations, clearing may be performed from the
pathway to the boring approximately perpendicular to the alignment.
Borings in wetland areas are anticipated to be accessed using a non-amphibious (i.e. not
floating) track mounted rig that can operate in approximately 2-3 feet of water. If an
amphibious "marsh buggy" type rig is required for any borings, additional fees will be
required. Upon obtaining actual bridge envelopes and performing field stake-outs, we
will notify you if any borings are likely to require a marsh buggy rig. '
The only think here that makes me nervous is when they state extensive clearing will
take place to drill test auger holes. Now the very next sentence states selective clearing
which I believe is the intent of the nationwide. Lastly, it says that tracked vehicles (not
floating) would be used in wetlands with up to 2-3 feet of waters. The intent of this
permit is to have pre-existing conditions upon completion and I question how this could
happen without having to possibly fill in ruts using such heavy equipment in soft soils.
Mats would resolve this issue but it seems like they may charge you more money for any
modifications. Original elevations should be restored at the end of the project. This
permit is not intended to have permanent impacts. Understanding our expectations of
how this permit works I do agree it fits the need and would not require prior notice.
Brad
P.S. A heads up reminder I am planning on going through the Wilmington ByPass
tomorrow with a crowd of folks from my office. Please advise if I need to alert anyone
else. Also will I be able to drive all the way through the project or not?
-----Original Message-----
From: Herndon, T. Mason [mailto:tmherndon@ncdot.gov]
Sent: Monday, December 4, 2017 9:26 AM
To: Shaver, Brad E CIV USARMY CESAW (US) <Brad.E.Shaver@usace.army.mil>;
Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Subject: [EXTERNAL] R-3300 Geotech Surveys
The Division's consultant for R-3300 (Stantec) is setting up contracts with Falcon
Engineering and Catlin Engineering to begin boring and soundings at proposed
structures and along the -L- of R-3300 A and B. Attached is the proposals/estimates for
the Structure Borings on A& B and borings/soundings along the -L- of the A section.
The borings/soundings on the B alignment will be done a little later so we do not have
an estimate or numbers for this section yet, but the proposed locations are shown on
the maps that I'm sending to you separately via FTS. We are proposing to proceed with
this work under Nationwide 6 and WQC 4085 and the permits and their conditions will
be included in the contract package.
Please review the attached information and confirm that this work can be completed
under the conditions of these permits and does not require written approval from you
agency.
If you have any questions or require any additional information please do not hesitate
to contact me.
Mason Herndon
Environmental Program Supervisor
Division 3
NCDOT- Division of Highways
910-341-2036 office
910-604-0050 mobile
tmherndon@ncdot.gov
5501 Barbados Blvd
Castle Hayne, NC 28429
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