10047 Atherton Mill Final Letter Report 20171211

Correspondence:Amec Foster Wheeler Environment & Infrastructure, Inc.2801 Yorkmont Road, Suite 100Charlotte, North Carolina 28208Tel[phone]Fax[phone]Licensures: NC Engineering F-1253, Geology C-247
www.amecfw.com
December 11, 2017
Mr.Jim Saloka,Senior Construction Manager
Atherton Mill (E&A), LLCCare of EDENS Limited Partnership
1221 Main Street, Suite 1000
Columbia, South Carolina 29201
Subject:Report of Phase II of Soil Screening/Sampling
Atherton Mill Mixed Use DevelopmentSouth BoulevardCharlotte, North Carolina
Brownfields Project Number:10047-06-60Amec Foster Wheeler Project:6228-12-0051
Dear Mr.Saloka:
Amec Foster Wheeler is pleased to submit this Report of Phase II of Soil Screening/Sampling
performed for the proposed redevelopment in Charlotte, North Carolina.This work was performed
in accordance with the Environmental Management Plan (EMP)and EMP Addendum (dated
March 15, 2017). Approval of these documents was received from the North Carolina Department
of Environmental Quality (NCDEQ), Division of Waste Management (DWM), Brownfields Program
(BP) on December 12, 2016 and May 4, 2017, respectively.This Report covers testing performed
on the site between July 25, 2017 and November 20, 2017. See Report prepared by Amec Foster
Wheeler (dated July 13, 2017)for prior testing performed on the site as part of the EMP.
Soil Screening/Sampling Activities
Prior to advancement of borings described below, Amec Foster Wheeler personnel marked the
proposed boring locations in the field using a survey-grade GPS unit. Amec Foster Wheeler also
contacted the North Carolina underground utility location service (One-Call) and performed
underground utility location using ground-penetrating radar (GPR) and other instrumentation to
mark buried objects such as pipes, tanks or underground utility lines. The purpose of this effort
was to minimize the potential for probing into underground utilities, tanks or lines buried at the
subject property.
Phase II of the soil screening involved Amec Foster Wheeler and subcontract personnel
attempting to advance a total of 32 soil borings, including 20 outdoor soil borings and 12 indoor
soil borings at the locations shown on the attached drawing (revision dated 12/11/2017).The table
Report of Phase II of Soil Screening/Sampling December 11, 2017Atherton MillCharlotte, North Carolina
Amec Foster Wheeler Project:6228-12-0051
2
below summarizes which borings were performed inside or outside the existing vacant buildings
(now demolished)addressed 2100 and 2104 South Boulevard:
Interior Borings SB-62, SB-63, SB-64, SB-65, SB-68, SB-69, SB-72, SB-73, SB-85, SB-86, SB-87 and SB-90
Exterior Borings SB-59, SB-60, SB-61, SB-66, SB-67, SB-70, SB-71, SB-74, SB-75, SB-76, SB-77, SB-78, SB-79, SB-80, SB-81, SB-82, SB-83, SB-84, SB-88
and SB-89
Interior Borings
On July 25, 2017,Amec Foster Wheeler personnel and our subcontract coring crew, Contract
Core Drilling & Sawing Co., cut 12 four-inch diameter holes through concrete floor slab inside the
vacant buildings. On July 26 and 27, 2017, Amec Foster Wheeler personnel used a stainless
hand auger to advance soil borings through the 12 core holes inside the buildings.
As the borings were advanced, soil cores from the subsurface were removed from the the
stainless steel hand auger bucket. Soil samples were retained from each boring at one-foot
intervals, placed in re-sealable plastic bags and screened in the field with an Organic Vapor
Analyzer equipped with a Flame Ionization Detector (FID), Model TVA-1000. Visual and olfactory
observations relative to the soil samples were recorded by field personnel. Following the
completion of the soil sampling activities, the borings were backfilled with bentonite pellets to the
ground surface and a patch of pavement was applied as needed.
Several borings (SB-62, SB-63, SB-64 and SB-65)advanced near the former produce market
building encountered hand auger refusal due to a buried concrete slab in this area.Following
building demolition and removal,Summit Contracting Group, Inc. (General Contractor) removed
the buried slab in September 2017 which allowed for soil screening to the proposed depths.On
October 3, 2017, Amec Foster Wheeler personnel visited the subject property and worked with
the General Contractor and grading contractor to advance test pit excavations at the locations of
borings SB-62 through SB-65. Amec Foster Wheeler personnel instructed the excavator operator
to advance the test pits in approximately one foot increments. Amec Foster Wheeler personnel
collected soil samples from each test pit at one-foot intervals, placed the samples in re-sealable
plastic bags and screened them in the field with and Organic Vapor Analyzer equipped with FID,
Model TVA-1000. Visual and olfactory observations relative to the soil samples were recorded by
field personnel. Following the completion of the soil screening activities, the excavator operator
backfilled the test pits to grade with the native soil.
Report of Phase II of Soil Screening/Sampling December 11, 2017Atherton MillCharlotte, North Carolina
Amec Foster Wheeler Project:6228-12-0051
3
Exterior Borings
On July 28, 2017,Amec Foster Wheeler personnel and our subcontract probing crew, Innovative
Environmental Technologies (IET), mobilized to the property to advance the exterior soil borings
on the asphalt parking lot and grassy areas at the subject property. The locations of the soil
borings are shown on the attached EMP Screening Work Plan drawing.
The soil borings were advanced to the appropriate depths as shown on the Work Plan drawing
using direct-push methodology. The direct-push rig was used to penetrate asphalt or concrete
pavement, where present. As the borings were advanced, soil cores from the subsurface were
removed from the MacroCore®sampler. Soil samples were retained from each boring at one-foot
intervals, placed in re-sealable plastic bags and screened in the field with an Organic Vapor
Analyzer equipped with a Flame Ionization Detector (FID), Model TVA-1000. Visual and olfactory
observations relative to the soil samples were recorded by field personnel. Following the
completion of the soil sampling activities, the borings were backfilled with bentonite pellets to the
ground surface and a patch of pavement was applied as needed.
Due to poor soil sample recovery with the MacroCore®tubes in the depth intervals from
approximately two to five feet below ground surface (bgs) of borings SB-76, SB-82, SB-83 and
SB-84, Amec Foster Wheeler revisited these boring locations on August 11, 2017 and advanced
hand auger borings to the planned depth of five feet bgs. Sufficient soil recovery was achieved in
the hand auger borings for screening.
On November 20, 2017, Amec Foster Wheeler personnel visited the subject property and worked
with the General Contractor and grading contractor to advance a test pit excavation at the location
of boring SB-70. Amec Foster Wheeler personnel instructed the excavator operator to advance
the test pit in approximately one foot increments. Amec Foster Wheeler personnel collected soil
samples from the test pit at one-foot intervals, placed the samples in re-sealable plastic bags and
screened them in the field with and Organic Vapor Analyzer equipped with FID, Model TVA-1000.
Visual and olfactory observations relative to the soil samples were recorded by field personnel.
Following the completion of the soil screening activities, the excavator operator backfilled the test
pits to grade with the native soil.
Results
The field screening results did not identify field screening readings equal to or greater than 10
parts per million (ppm) in the soil samples collected from the 32 soil borings.Therefore, no
samples were retained for laboratory analysis.
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Y CITY OF CHARLOTTE130' RAILROAD RIGHT-OF-WAYMB. 30, PG. 863CITY OF CHARLOTTE130' RAILROAD RIGHT-OF-WAYTTTTTWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWFWFWFWFWFWFWFWFWFWFWFWFWFWFWFWFWFWFWSSSSSSSSSSGGGGGGG G G G G G G GGGGGGGGGGGGGGGGGGGGSSSSSSSSSSWGGGGGGGGGGGGGGGGGGGGGGGGSSSSSSSS
SS SS SS SS SS SS SSSSSSSSWWWWWFWSOIL RESTRICTION ZONESOIL RESTRICTION ZONETD-03RIM: 751.12INV: 748.45MH-06RIM: 750.25INV: 746.20MH-02RIM: 749.80INV: 743.10CI-09RIM: 749.80INV: 746.55TD-04RIM: 749.35INV: 746.68DI-05RIM: 749.20INV: 745.48CI-07RIM: 749.08INV: 745.84MH-08RIM: 748.86INV: 746.36EX SSMH-08RIM: 759.40INV: 748.75SSMH-07RIM: 758.42INV: 748.62SSMH-06RIM: 755.80INV: 747.76SSMH-10RIM: 753.95INV: 746.28SSMH-11RIM: 753.92INV: 746.60SSMH-04RIM: 753.12INV: 745.10SSMH-02RIM: 752.55INV: 744.54SSMH-09RIM: 751.45INV: 747.32SSMH-05RIM: 751.00INV: 746.04SSMH-05ARIM: 750.60INV: 746.41REVISIONS:
223 N Graham Street Charlotte, NC 28202
V: 704.333.0325 F: 704.332.3246
www.LandDesign.com
ATHERTON MILL
MIXED USE DEVELOPMENT
EMP SCREENING WORK PLAN0'15'15'30'60'ABC123456789101112DEFGHIJKLMNOPQRNOTES1.BASED ON RESULTS OF SCREENING, SAMPLES WILL BETAKEN PER REQUIREMENTS OF ENVIRONMENTALMANAGEMENT PLAN.2.IN THE AREA OUTSIDE THE SOIL RESTRICTION ZONE, THECONTRACTOR SHALL FOLLOW THE ENVIRONMENTALCONTINGENCY PLAN.LEGENDGRID SCREENING: 0-5'GRID SCREENING: 0-5' AND 5-8'TRENCH SCREENING: 0-5'TRENCH SCREENING: 0-5' (AND 5'-DEPTH NOTED IF INDICATED ON PLAN)TRENCH SCREENING: 0-5' (AND 5-DEPTH NOTED IF INDICATED ON PLAN)GRID AND/OR TRENCH SCREENING SAMPLE < 10 PPMAREA WHERE AFFECTED SOIL RE-USED AT PROPERTYEX BUILDING TOBE DEMOLISHEDFFE: 754.8FFE: 755.33FFE: 754.00FFE: 752.75FFE: 751.50FFE: 750.50CRANEPADBOT: ±743BOT FTG:748.50BOT FTG:748.33BOT FTG:747.75BOT FTG:747.16BOT FTG:747.83BOT FTG:748.50BOT FTG:747.50BOT FTG:747.25BOT FTG:748.33BOT FTG:747.17BOT FTG:747.25BOT FTG:746.50BOT FTG:747.33BOT FTG:745.83BOT FTG:747.00BOT FTG:749.50BOT FTG:748.25BOT FTG:747.67BOT FTG:751.0BOT FTG:748.84BOT FTG:747.84BOT FTG:747.33BOT FTG:748.00BOT FTG:744.50BOT FTG:744.50BOT FTG:747.33BOT FTG:747.67BOT FTG:747.33BOT FTG:748.25BOT FTG:752.5BOT FTG:749.33BOT FTG:748.75BOT FTG:746.58BOT FTG:746.0BOT FTG:747.0BOT FTG:752.5BOT FTG:749.75BOT FTG:748.75BOT FTG:748.25BOT FTG:749.42BOT FTG:749.25BOT FTG:749.75BOT FTG:750.75BOT FTG:750.16BOT FTG:750.16BOT FTG:749.0BOT FTG:749.58BOT FTG:749.08BOT FTG:751.83BOT FTG:751.255'-8'5'-8'5'-8'5'-8'5'-6'5'-8'5'-10'5'-8'5'-8'EX. BUILDINGTO REMAINFFE: 752.00SB-29SB-28SB-32SB-35SB-42SB-41SB-43SB-45SB-52SB-55SB-54SB-51SB-53SB-46SB-48SB-56SB-57SB-58SB-34SB-37SB-40SB-47SB-19SB-18SB-14SB-22SB-20SB-36SB-26SB-17SB-15SB-13SB-11SB-38SB-44SB-49SB-25SB-21SB-23SB-24SB-27SB-19SB-30SB-31SB-33SB-39SB-16SB-12SB-9SB-7SB-2SB-1SB-4SB-3SB-10SB-8SB-6SB-5SB-50SB-59SB-60SB-62SB-63SB-90SB-76SB-77SB-78SB-79SB-80SB-81SB-82SB-83SB-84SB-61SB-64SB-65SB-66SB-67SB-68SB-69SB-70SB-71SB-73SB-74SB-75SB-85SB-86SB-87SB-89SB-88SB-72SB-91SB-92SB-93SB-94SB-95SB-96SB-97SB-98SB-99SB-100SB-104SB-105SB-106SB-103SB-102SB-101AREA BAREA A12/11/2017