HomeMy WebLinkAbout10036_South End Transit_Camden Southline Two-Geotechnical Drilling Work Plan-FINAL-Revised-OCR
Professional Service Industries, Inc. ● 5021 West W.T. Harris Boulevard, Charlotte, NC 28269 ● Phone 704.598.2234 ● Fax 704.598.2236
May 17, 2012
Revised May 23, 2012
VIA EMAIL ONLY
Mr. Tony Duque
NC Brownfields Program
1646 Mail Service Center, Room 3409-K
Raleigh NC 27699-1646
RE: Preliminary Geotechnical Subsurface Drilling and Sampling Work Plan
Proposed Multi-Family Residential Projects
Camden Southline One and Camden Southline Two
Tracts 5 and 14, associated with the Brownfields Project Number # 10036-06-60,
Charlotte, North Carolina
PSI Geotechnical Project Numbers: 0511434 and 0511435
Tony:
PSI has been retained by a client (Camden Development, Inc.) who is starting a 60-day due
diligence period associated with the potential purchase of Tracts 2, 5, 10, and 14 of the
property associated with the Brownfields Project Number # 10036-06-60. The client has
divided the tracts into two sites Camden Southline One (Tracts 2 and 10) and Camden
Southline Two (Tracts 5 and 14). A Brownfields survey plat showing the approximate
boundaries of the two sites is attached. Our client is proposing to redevelop these sites for
multi-family residence with a portion of the sites developed as a multi-story parking deck.
Drilling and soil sampling operations will be directed by a PSI field supervisor, and all field
personnel will be OSHA trained in accordance with 29 CFR 1910.120. Equipment
decontamination, sample collection, field documentation, will be in general accordance with
methods prescribed by the EPA and North Carolina Department of Environment and Natural
Resources (NCDENR) Brownfield Program Guidelines. Soil test borings will be advanced
utilizing an all-terrain vehicle mounted drill rig and continuous-flight hollow stem augers. Soil
samples will be collected for lithologic logging and geotechnical laboratory analysis.
Investigation derived waste (IDW) from the drilling activities will be drummed. At the
completion of the drilling activities, samples of the IDW will be collected for chemical analysis
by a North Carolina certified laboratory. Once laboratory analysis of the soil is completed (7 to
10 days) the drums will be disposed of off-site per NCDENR regulations. If the laboratory
analytical results indicate that the IDW meets the NCDENR Inactive Hazardous Site Branch
criteria for clean soil the soil will be removed from the drums and spread on site.
Camden Development, Inc
Geotechnical Assessment Work Plan,-Charlotte NC
PSI Project No: 0511434 & 0511435
May 17, 2012 Revised May 23, 2012
Page 2 of 3
The drilling rig and tooling will be decontaminated using a hot water/steam pressure washer
prior to starting drilling activities at each of the sites and prior to the final demobilization.
Proposed boring location plans are provided as attachments.
The specific scope of the preliminary geotechnical assessments are described below:
Camden Southline One
To evaluate subsurface conditions at the Camden Southline One site, a total of fourteen soil
test borings will be performed, including six within the proposed parking deck building
footprint and eight within the proposed apartment building areas. The parking deck area
borings will be advanced to a depth of approximately 40 feet below the existing ground
surface, four of the higher elevation apartment area borings to a depth of approximately 25
feet, and four of the lower elevation apartment area borings to a depth of approximately 20
feet. If auger refusal is encountered above the prescribed depths the borings will be
terminated upon refusal. Each soil test boring will be abandoned using bentonite-grout slurry.
During drilling, Standard Penetration Tests (SPT) will be performed in general accordance
with ASTM D1586; and soil sampling will be performed at 2.5-foot intervals in the upper 10
feet and 5-foot intervals thereafter to the termination depths to evaluate the strength and
relative density of the soils encountered. Split-spoon samples will be collected at each
interval during the Standard Penetration Testing.
Camden Southline Two
To evaluate subsurface conditions at the Camden Southline Two site, a total of fourteen soil
test borings will be performed, including six within the proposed parking deck building
footprint and eight within the proposed apartment building areas. The parking deck area
borings will be advanced to a depth of approximately 40 feet below the existing ground
surface, four of the higher elevation apartment area borings to a depth of approximately 25
feet, and four of the lower elevation apartment area borings to a depth of approximately 20
feet. If auger refusal is encountered above the prescribed depths the borings will be
terminated upon refusal. Each soil test boring will be abandoned using bentonite-grout slurry.
During drilling, Standard Penetration Tests (SPT) will be performed in general accordance
with ASTM D1586; and soil sampling will be performed at 2.5-foot intervals in the upper 10
feet and 5-foot intervals thereafter to the termination depths to evaluate the strength and
relative density of the soils encountered. Split-spoon samples will be collected at each
interval during the Standard Penetration Testing.
Camden Development, Inc, hereby requests approval from the Brownfields Program for
conducting these geotechnical activities pursuant to this plan. Time is of the essence with
Camden Development, Inc
Geotechnical Assessment Work Plan,-Charlotte NC
PSI Project No: 0511434 & 0511435
May 17, 2012 Revised May 23, 2012
Page 3 of 3
respect to this approval since the contract only allows sixty (60) days for such matters to be
assessed.
If you have any questions regarding this correspondence please feel free to contact me.
Respectfully submitted,
PROFESSIONAL SERVICE INDUSTRIES, INC.
Bryan M. Lucas .
Senior Project Manager
Enclosures
Cc: Mr. Jay Johnson (via email only, w/encls)
Ms. Carol Jones Van Buren, Esq. (via email only, w/encls)
Base drawing, “Camden South Blvd Study Option 8”, provided by Camden Development, Inc. and undated.
Approximate Scale
North
Project Name:
PROPOSED BORING LOCATION PLAN Camden Southline One
2300 and 2316 South Boulevard
Charlotte, North Carolina
Project No.: Date:
0511-434 May, 2012
B-1
B-2
B-3
B-4 B-5
B-6
B-7
Approximate Proposed Soil Test Boring Location 0 75 feet
B-8
B-9
B-10
B-11
B-12 B-13
B-14
Base drawing, “Camden South & Remount Study Option 1”, provided by Camden Development, Inc. and undated.
Approximate Scale
North
Project Name:
PROPOSED BORING LOCATION PLAN Camden Southline Two
2500, 2508 and 2522 South Boulevard
Charlotte, North Carolina
Project No.: Date:
0511-435 May, 2012
B-1B-2
B-3
B-4
B-5 B-6
B-7
Approximate Proposed Soil Test Boring Location 0 75 feet
B-8
B-9
B-10
B-11
B-12
B-13B-14