NC0089702_Application_20170606

Water Resources
ENVIRONMENTAL QUALITY
June 06, 2017
Mr. Brandon Yancey
Terwilliger Pappas
510 Glenwood Avenue, Suite 317
Raleigh, NC 27603
Subject: NPDES Permit Application
Permit#: NCO089702
Soils Brightleaf
Durham County
Dear Mr. Yancey:
ROY COOPER
MICHAEL S. REGAN
S. JAY ZIMMERMAN
The Water Quality Permitting Section acknowledges receipt of your NPDES permit
application and supporting documentation received on June 01, 2017. Your application has been
assigned the number listed above, and the primary reviewer is John Hennessy.
Central and Regional Office staff will perform a detailed review of the provided application
and may contact you with a request for additional information if necessary. To ensure the
maximum efficiency in processing permit applications, the Division of Water Resources requests
your assistant in providing a timely and complete response to any additional information requested.
Please note that processing standard review permit applications may take as long as 60 to 90
days after receipt of a complete application. Please refer to the above application number when
making inquiries on this project. If you have any questions, please contact Julie at 919-807-6377,
or via e-mail at [e-mail].
cc: Raleigh Regional Office
Permit File NCO089702
Sincerely,
W Ire*v TGA-20fOw&
Wren Thedford
Wastewater Branch
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-807-6300

4�+
i Atlantic
log,ro.;�r,ng & Environmentai, Sciutjon-s
May 31, 2017
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: MINOR NPDES PERMIT APPLICATION
SOLIS BRIGHTLEAF APARTMENTS
DURHAM, NORTH CAROLINA
MID -ATLANTIC JOB NUMBER: OOOR2807.01
To Whom It May Concern:
409
NC 27610
.office 919.250.9918
919.250.9950
Please find attached three copies of an NPDES Permit Application — Short Form C —
GW and associated supporting documentation. This submittal also includes a check for
the permit fee ($860.00). This project pertains to a dewatering system required to
complete construction activities as well as in support of long term operation of the
apartment building. The groundwater at the subject site is known to be contaminated
with chlorinated solvents and petroleum hydrocarbons.
We appreciate this opportunity to submit this application on behalf of Terwilliger Pappas
Multi -Family Partners. If you have any questions concerning this submittal, please do
not hesitate to call us at 919-250-9918.
Sincerely,
MID -ATLANTIC ASSOCIATES, INC.
aA�_A_
Daniel H. Nielsen, PE
Principal Engineer
CC: Brandon Yancey
RECEIVEDINCDE01DWR
JUN 0 1.2017
Water a a"%)fn
Permitting

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number INC00 -
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
Terwilliger Pappas (c/o Brandon Yancey)
Solis Brightleaf
510 Glenwood Avenue, Suite 317
Raleigh
NC / 27603
[phone]
[e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road
City
State / Zip Code
County
1001 West Main Street
Durham
NC / 27701
Durham
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name Mid -Atlantic Associates
Mailing Address 409 Rogers View Ct RECEIVEDUDENWR
City Raleigh _ 111 N 0 y ?W
State / Zip Code NC / 27610
Telephone Number [phone] Permitting Section
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ® Public ❑
Page 1 of 3 C -GW 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
5. Products recovered:
Gasoline ❑ Diesel fuel ❑ Solvents ® Other Heating Oil
6. Number of separate discharge points: 1
Outfall Identification number(s) 001
7. Frequency of discharge: Continuous ❑ Intermittent
If intermittent:
Days per week discharge occurs: 7 Duration: Batch discharge.
approximateL 3 30 -minute discharges per day at maximum antica ated flow of 600 gpd
8. Treatment System Design flow 0.014 MGD
9. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Discharge is to City storm sewer adjacent to site (Outfall 001). The City storm sewer
discharges to an unnamed tributary of Ellerbee Creek at 36°00'20.9"N, 78°54120.0"W
10. Please list all additives to the treatment system, including chemicals or nutrients, that have
the potential to be discharged.
No additives will be used in the treatment. Treatment will be conducted using GAC
11. Is this facility located on Indian country? (check one)
Yes ❑ No
12. Additional Information
All applicants (including renewals):
A USGS topographical map (or copy of the relevant portion) which shows all outfalls
A summary of the most recent analytical results (effluent data, if available) containing the
maximum values for each chemical detected
NEW Applicants only:
Engineering Alternative Analysis
Description of remediation treatment system components, capacities, and removal efficiency
for detected compounds.
If the treatment system will discharge to a storm sewer, written approval from the
municipality responsible for the sewer.
A list of any chemicals found in detectable amounts at the site, with the maximum observed
concentration reported for each chemical (the most recent sample must be collected less
than one year prior to the date of this application)
For petroleum -contaminated sites - Analyses for Volatile Organic Compounds (VOC) should
be performed. Analyses for any fuel additives likely to be present at the site and for phenol
and lead should also be performed.
For sites contaminated with solvents or other contaminants - EPA Method 624/625
analysis should be performed.
Page 2 of 3 C -GW 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
13. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
1 CAna(o n ti-] an c.
Printed name of Person
of Applicant
,J 1 rcc�� oT l.�rtT7r�'s.�
Title
5"/30//
North Carolina General Statute 143--21-5,-6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 3 of 3 C -GW 03105

Mid Atlantic
Engineering & tnvironmenta Solutions

IZ\
I N
ORANGE
DURHAM
WAKE
LA SHOWN WITHIN
RHAM COUNTY
�[ SUS
r' 70
BURCFif AVE 1 _EXU44
S
W. CFIAPE(�HILL ST
DISCHARGE FROM CITY
STORM SEWER SYSTEM
TO UNNAMED TRIBUTARY
TO ELERBEE CREEK
(3600'20.9" N, 78°54'20" W) R
DATE:
BY:
MAY 2017
DRAFT
0
CHECK:
rr�'
ENG.
1
SITE
CHECK:
r'
APPROVAL:
DWG NO: 1
S-
INTO CITY STORM
CONTOUR INTERVAL = 10 FEET =
DISCHARGE FROM CITY
STORM SEWER SYSTEM
TO UNNAMED TRIBUTARY
TO ELERBEE CREEK
(3600'20.9" N, 78°54'20" W) R
REFERENCES:
1. SOUTHWEST DURHAM AND NORTHWEST DURHAM, NC DIGITAL RASTER GRAPHICS,
USGS. SCANNED FROM 1:24,000 -SCALE SOUTHWEST DURHAM AND NORTHWEST DURHAM, NC
TOPOGRAPHIC MAP, PUBLISHED 2013, USGS.
2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS,
BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C.
3. PROPERTY BOUNDARY DATA FROM DURHAM COUNTY GIS.
Atlantic
SCALE: 1:12,000
Feet
0 1,000 2,000
TOPOGRAPHIC SITE MAP
WITH DISCHARGE POINTS
SOLIS BRIGHTLEAF APARTMENTS
1001-1005 W. MAIN STREET
1006-1016 W. PEABODY STREET
DURHAM, NORTH CAROLINA
DRAWN
DATE:
BY:
MAY 2017
DRAFT
0
CHECK:
rr�'
ENG.
GIS NO:
CHECK:
04G-00OR2807.01-1.2
APPROVAL:
DWG NO: 1
DISCHARGE POINT
INTO CITY STORM
SEWER SYSTEM
(OUTFALL 001)
REFERENCES:
1. SOUTHWEST DURHAM AND NORTHWEST DURHAM, NC DIGITAL RASTER GRAPHICS,
USGS. SCANNED FROM 1:24,000 -SCALE SOUTHWEST DURHAM AND NORTHWEST DURHAM, NC
TOPOGRAPHIC MAP, PUBLISHED 2013, USGS.
2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS,
BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C.
3. PROPERTY BOUNDARY DATA FROM DURHAM COUNTY GIS.
Atlantic
SCALE: 1:12,000
Feet
0 1,000 2,000
TOPOGRAPHIC SITE MAP
WITH DISCHARGE POINTS
SOLIS BRIGHTLEAF APARTMENTS
1001-1005 W. MAIN STREET
1006-1016 W. PEABODY STREET
DURHAM, NORTH CAROLINA
DRAWN
DATE:
BY:
MAY 2017
DRAFT
JOB NO:
CHECK:
00OR2807.01
ENG.
GIS NO:
CHECK:
04G-00OR2807.01-1.2
APPROVAL:
DWG NO: 1

ANALYTICAL DATA SUMMARY
MidAtlantic
'engineering & nvironmenta; Solutions

TABLE 1
SUMMARY OF VOLATILE ORGANIC COMPOUNDS DETECTED IN
GROUNDWATER (UG(L)
FORMER HOWERTON BRYAN FUNERAL HOME
DURHAM, NORTH CAROLINA
MID-ATLANTIC PROJECT NO.: R2807.01
WEILID
TMW-1 TMW-2 I TMW-3 TMW-4
MElHOD8260B
DALE SPM PED
2n12017
2/N2017
2ni2017
2/72017
EIHYIENE DIBR]MIDE
<0.51
<0.051
<0.51
<0.051
1,2-DIGA0R)E1HAAE
<0.66
7.5
<0.66
6.5
1'1'2
<0.66
<0.066
<0.66
<0.066
TRCHIOR7EIHANE
BENZENE
42
<0.48
<0.48
0.61
BR]MODICHU ME]HANE
<0.62
<0.062
<0.62
<0.062
1,1
<0.83
<0.083
<0.83
0.66
DICHIOR)EHENE
ISOPR)PYLEIHER
<0.50
7.2
<0.50
<0.050
VINYL
<0.97
<0.097
<0.97
<0.097
CHLCIRDE
as-1,2-
82
1.5
<0.56
20
DICH10R)ElHENE
1R1NS-1, 2-DICHLOWMENE
<0.94
<0.094
<0.94
.4.1
NA01HAIME
5.2 J
<0.19
<1.9
4.0
TEIFPCHLOR)ETIENE
2,000
62
1,200
540
TINE
28
3.3
<0.78
110
MEIHYLIERFBUIM_EHER
<0.42
14
<0.42
<0.042
(MTBE)
1 NOTES:
Bold = Hight detected concentration or highest detection limit
I
i

TABLE 2
SUMMARY OF ADDITIONAL PARAMTERS DETECTED
IN
GROUNDWATER (UGfL)
FORMER HOWERTON BRYAN FUNERAL HOME
DURHAM, NORTH CAROLINA
MID-ATLANTIC PROJECT NO.: R2807.01
WELLID
ADDITIONAL
TMW-1 TMW-2 TMW-3
TMW-4
PARAMETERS
DAlE SAMPLED
TESTED
2/7/2017 2/7/2017 2/7/2017
2/7/2017
BOD -- NA --
--
TSS 15,000,000 NA 21,000,000
3,000,000
TKN 940 NA 1,500
610
Ammonia -- NA --
--
Cyanide -- NA --
--
Arsenic 6.5 2.3 19
3.9
Selenium 2.1 1.0 150
1.2
Cadmium -- -- --
--
Chromium 130 46 1,400
21
Copper 71 BH 64 BH 4,000 BH
26
Lead 40 36 --
22
Mercury -- -- --
--
Molybdenum -- 2.1 --
--
Nickel 120 BH 56 2,200 BH
25
Silver -- -- --
--
Zinc 280 BH 170 BH 6,600 BH
76
Fluoride 120 120 --
--
Chloride 100,000 16,000 31,000
37,000
Notes:
-- - Not detected at or above laboratory method detection limits
BOD - Biological Oxygen Demand
TSS - Total Suspended Solids
TKN -Total Kjeldahl Nitrogen
FVCGQS - North Carolina Groundwater Quality Standard
Bold - Highest detected concentration
NE - Not established
BH-Method Blank (MB) greater than one half of the reporting limit,
but the sample concentrations are greater than 10x the MB
NA - Not analyzed due to poor groundwater recharge in well

ENGINEERING ALTERNATIVES ANALYSIS
INCLUDES:
TREATMENT EQUIPMENT INFORMATION
STORM SEWER DISCHARGE APPROVAL
SUMMARY OF CHEMICAL DETECTED
At I a n t'l c

ENGINEERING ALTERNATIVES ANALYSIS
SOLIS BRIGHTLEAF APARTMENTS
1005 WEST MAIN STREET
DURHAM, DURHAM COUNTY, NORTH CAROLINA
Prepared For:
Terwilliger Pappas Multi -Family Partners, LLC
510 Glenwood Ave, Suite 317
Raleigh, NC 27603
[phone]
Prepared By:
Mid -Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, North Carolina 27610
[phone]
May 19, 2017
.,�� Atlantic

Atlantic
Engineering & Environmental Solutions
ENGINEERING ALTERNATIVES ANALYSIS
SOLIS BRIGHTLEAF APARTMENTS
1005 WEST MAIN STREET
DURHAM, DURHAM COUNTY, NORTH CAROLINA
Mid -Atlantic Associates Job No. OOOR2807.01
Prepared For:
Mr. Brandon Yancey
Terwilliger Pappas
510 Glenwood Ave, Suite 317
Raleigh, NC 27603
May 19, 2017
Prepared By:
MID -ATLANTIC ASSOCIATES, INC.
Ethan J. Caldwell, P.E.,L.G
Senior Project Manager
Daniel H. Nielsen, P.E.
Principal Engineer
NC t
4 so 9

TABLE OF CONTENTS
1.0 INTRODUCTION.....................................................................................................1
2.0 SURFACE WATER DISCHAGE APPLICABILITY.................................................1
2.1 Project Descril2tion.......................................................................................... 2
2.2 Aipclicant/Facility Information..........................................................................3
2.3 Engineering Alternative Analysis Prepare Information .................................... 3
3.0 DISCHARGE FLOW PROJECTIONS AND DISCHARGE WATER QUALITY ....... 3
4.0 TECHNOLOGICALLY FEASIBLE ALTERNATIVES.............................................4
4.1 Alternative A. Connection to Existing Wastewater Treatment System ............ 4
4.2 Alternative B. Land Application ....................................................................... 5
4.3 Alternative C. Wastewater Reuse................................................................... 6
4.4 Alternative D. Direct Discharge to Surface Waters .......................................... 6
5.0 TECHNOLOGICALLY FEASIBLE ALTERNATIVES ............................................. 8
DRAWINGS
Drawing 1.1 Site Map
Drawing C5.10 Foundation Dewatering Plan
Drawing 3.1 Estimated Groundwater Water Table Contour Map — February 7, 2017
TABLES
Table 3.1
Monitoring Well and Groundwater Elevation Data
Table 3.2
Summary of Volatile Organic Compounds Detected in Groundwater
Table 3.3
Summary of Additional Parameters Detected in Groundwater
APPENDICES
Appendix A
City of Durham Correspondence
Appendix B
Direct Discharge to Surface Waters Documentation
46 Mid Atlantic
Engineering; & Environmental Solutions

1.0 INTRODUCTION
The subject site is the proposed Solis Brightleaf Apartment Complex located at 1005 W
Main Street in Durham, North Carolina (Drawing 1.1). The proposed design of the project
will involve excavation of site soils to support a subgrade parking garage. Due to the shallow
nature of the groundwater continuous dewatering efforts will be required. The purpose of
this Engineering Alternative Analysis (EAA) is to provide justification for discharge
dewatered groundwater to the City of Durham's storm sewer.
2.0 SURFACE WATER DISCHAGE APPLICABILITY
This EAA will consider the feasibility of dewatering discharges by disposal into a Public
Owner Treatment Works (POTW), land application, reuse and discharge to a surface
water. Prior to considering discharge to a surface water, the EAA Guidance suggest that
the regulatory feasibility of this option is first considered. The EAA has outlined five
potential restrictions to consider.
1. Zero Flow Stream Restrictions [15A NCAC 26.0206(d)(2)
Dewatered groundwater will be discharge in to City of Durham storm sewer. The nearest
storm sewer drop inlet is located on Main Street adjacent to the northern corner of the
property. The storm drain interconnects with several other storm drains. Ultimate
discharge of the storm drain is to the South Ellerbe Creek Tributary located approximately
2,500 feet northeast of the project (36°00'20.9"N, 7854'20.0"W).
Due to discharge to the storm sewer the North Carolina Department of Environmental
Quality (NCDEQ) Division of Water Quality (DWQ) was contacted for clarification on Zero
Flow Stream Restrictions. According to Joe Corporon, due to connection to the existing
storm drain the discharge is considered a zero -flow under regulation 213 .0206. As stated
in the NCDEQ Zero -Flow Policy dated 5/12/99 effluent limits are set on a "case-by-case
basis." Case 1 requires an alternative analysis with summer limits of BODS = 5 mg/I and
NH3-N — 2mg/l and winter limits for BODS =10 mg/I and NH3-N —1.8 mg/I. Case 2 requires
alternative analysis to meet the limits, but renew the permit without a change in limits.
Case 3 requires an alternative analysis with summer limits of BODS = 5 mg/I and NH3-N
— 2mg/I and winter limits for BODS = 10 mg/I and NH3-N — 4 mg/I.
2. Receiving Stream Classification Restrictions [15A NCAC 213.0200]
The South Ellerbe Creek Tributary is not identified in the Surface Water Classification on
the NCDEQ website. South Ellerbe Creek Tributary flows in to South Ellerbe Creek, which
merges with, Ellerbe Creek. The point from where the storm drainage daylights at South
Ellerbe Creek Tributary is approximately 1.25 miles from the merge point of Ellerbe Creek.
Ellerbe Creek is listed as a WS -IV -NSW class water. The list indicates special restrictions
apply to the tributary as waters used as sources of water supply for drinking, culinary or
for processing purposes.
Mid Atlantic
Engineering & Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
3. Basin Wide Water Quality Plans
May 19, 2017
Page 2
Review of the Basin Wide Water Quality Plan for the Neuse River Basin did not identify
the tributary as waters requiring special consideration. The Plan identified Ellerbe Creek
as impaired waters for biological integrity with potential stressors listed as fecal coliform
bacteria, habitat degradation, nutrient impacts and turbidity. Impaired waters are further
discussed in the next section. Impaired biological community is typical of streams that run
through urban areas. Much of the Ellerbe Creek restoration focuses to decrease storm
flow velocity to reduce suspended sediment load and reducing stream bank erosion. It
appears that dewatering discharge will not add to the potential stressors observed in
Ellerbe Creek.
4. Impaired Waters
In accordance with the Clean Water Act, NCDEQ maintains a list of impaired waters: the
303(d) list. Review of the Draft 2016 list Ellerbe Creek as impaired waters for biological
integrity with potential stressors listed as fecal coliform bacteria, habitat degradation,
nutrient impacts and turbidity. Identified impacts in the groundwater, which will be treated
with prior to discharge to the storm drain, do not appear to be a potential stressor.
Identified impacts are discussed in Section 3.0.
5. Endangered Species
Due to the plan to discharge to the storm sewer, the presence of endangered or
threatened species are not anticipated at the proposed discharged location.
2.1 Project Description
The project proposes redevelopment of several parcels into an apartment complex. The
redeveloped parcels will encompass 1.45 acres and consist of an approximately 300,000
square foot, five level apartment complex consisting of 194 units and associated
amenities. The complex will sit on a 254 space, two level parking garage. The lower
portion of the parking garage will be subgrade and will require continuous groundwater
dewatering.
A foundation dewatering plan was developed by Stewart. (Drawing C5.10). The
foundation dewatering plan proposes to drain groundwater to a wet well located in the
northeast portion of the property. There is a documented release from a former heating
oil UST system and groundwater contamination from several off site sources, including
dry cleaners. Water is pumped from the wet well to an effluent tank. From this tank the
water will be pumped through a bag filter and two activated carbon vessels plumbed in
series. The treated water will be discharged into the City of Durham storm sewer system.
Atlantic
Engineering & Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
2.2 Applicant/Facility Applicant/FacilityInformation
Terwilliger Pappas
510 Glenwood Avenue, Suite 317
Raleigh, NC 27603
Attn: Brandon Yancey
Phone: [phone]
Email: tbyanceyC>terwiliaerpappas.com
2.3 Engineering Alternative Analysis Prepare Information
Mid -Atlantic Associated, Inc
409 Rogers View Court
Raleigh, NC 27610
Attn: Daniel H. Nielsen. PE
Phone: [phone]
Email: dnielsenPmaaonline.com
May 19, 2017
Page 3
3.0 DISCHARGE FLOW PROJECTIONS AND DISCHARGE WATER QUALITY
The rates at which discharges from the wet well will be variable and dependent on
groundwater elevations. Groundwater elevations were measured from four temporary
wells install February 7, 2017. A summary of the groundwater elevations are in Table 3.1.
Based on the measurements, collected the groundwater flow direction was estimated to
be generally toward the northeast with a hydraulic gradient (dh/dl) of approximately 0.026
ft/ft. An estimated water table contour map is provided as Drawing 3.1
Groundwater elevations were used to estimate seepage discharge rate. Seepage
discharge rate was calculated by applying Darcy's Law.
_ dh
Q dl K A
The discharge rate was calculated assuming the estimated dewatering length of pipe of
approximately 1600 feet. A conservative estimate on the average depth of pipe below
groundwater elevation is approximately four feet. The conservative dewatered cross
sectional area is 6400 ft2. Two values of K were obtained from the Corrective Action Plan
prepared for Tops Texaco Mart located at 1016 W. Main Street in Durham, North Carolina.
The K values were determined with bail down tests and calculated at 1.69 ft/day and
0.472 ft/day. Two additional values of K were obtained from the Comprehensive Site
Assessment for the Brightleaf Square Lots 3-8, located at the intersection of Gregson and
Main Street in Durham, North Carolina. The K values were determined with 0.06 ft/day
and 0.07 ft/day.
46 M Id Atlantic
Engineering & Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
May 19, 2017
Page 4
Applying these values and assuming the effective porosity of the site is 0.3, the seepage
discharge rate varies from 24 gal/day (with a K of 0.06 ft/day) to 631 gal/day (with a K of
1.69 ft/day). Other factors influencing the discharge rate include season fluctuation of
groundwater elevations and influences from storm water. A reasonable high estimate of
the discharge is 650 gallons per day or 0.237 million gallons per year.
In February 2017, ground water samples were collected from four temporary monitoring
wells. The samples were tested VOCs including 1,2-Dibromoethane (EDB). Additionally,
samples collected from TMW-1, TMW-3 and TMW-4 were tested for BOD, TSS (total
suspended solids), NH3 (ammonia), TKN (Total Kjeldahl Nitrogen), As, Cd, Cn, Cr, Cu,
Pb, Hg, Mo, Ni, Ag, Se, Zn, Fluoride, and Chloride. Due to low volume recovery from
TMW-2, BOD, TSS, TKN, ammonia and cyanide were not analyzed from this well.
Samples were also field tested for DO (Dissolved Oxygen), pH, conductivity, temperature
and ORP (Oxidation -Reduction Potential). A summary of parameters detected in the
groundwater are shown on Tables 3.2 and 3.3.
4.0 TECHNOLOGICALLY FEASIBLE ALTERNATIVES
In accordance with the EAA Guidance, four alternatives for disposal of dewatering
discharges are evaluated in the below discussion. These alternatives included disposal
into the City of Durham's POTW, disposal by land application alternatives, waste water
reuse and discharge to surface water through the National Pollutant Discharge
Elimination System (NPDES) program.
Prior to evaluating the alternatives Mid -Atlantic conferred with Terwilliger Pappas, Cline
Design (Project Architects) and Stewart (Project Geotechnical and Civil Engineers) on
alternative designs to reduce or eliminate the amount of discharge to surface waters. Site
redevelopment eliminating the lower parking deck was evaluated. Elimination of lower
parking deck would reduce the number of space available for residence use and create
an undue burden on the already stress on -street public parking. Erecting two parking deck
above the groundwater would require the elimination of one floor of the residential
apartments. Elimination of one floor of the residential unit would make redevelopment of
the site economically undesirable.
Since each alternatives discussed below requires dewatering to a wet well location, and
pumping to the discharge point, cost associated with dewatering and pumping were not
included in the alternative analysis.
4.1 Alternative A. Connection to Existing Wastewater Treatment System
Mid -Atlantic contacted the City of Durham POTW representative Gerald (Tyrone) Battle
to discuss the potential for discharge into the City's wastewater treatment system. Per the
City of Durham Sewer Use Ordinance Division 2 Section 70-216 (b) Specific prohibitions:
�4 Atlantic
JN Engineering & Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
May 19, 2017
Page 5
"No user shall contribute or cause to be contributed into the POTW the following
pollutants, substances, or wastewater:
(13) Storm water, surface water, ground water........, unless specifically authorized
by the director."
The City of Durham POTW has agreed to receive discharge water on a short term basis
until a long term solution is implemented. Correspondence with the City of Durham is
attached as Appendix A.
4.2 Alternative B. Land Application
Land application, spray irrigation and drip irrigation are not feasible alternatives due to
projects location in a dense urban setting. The Soil Survey of Durham County, North
Carolina was reviewed to help determine hydraulic loading to the groundwater for
evaluation of a subsurface infiltration gallery. Soils under and adjoining the site are listed
as White Store Urban Land Complex, subsurface outflow quality lists a very limited
absorption field as "Severe: peres slowly." Utilizing the mass balance approach flow in =
flow out, the cross sectional area of the infiltration gallery should match the conservative
drainage area of 6400 ft2 (0.15 acres).
Since the objective is dewatering the groundwater, any subsurface infiltration gallery
needs to be located hydrologically downgradient of the building. The building footprint
covers the entire lot hydrologically down gradient, locating a suitable infiltration gallery
would require acquiring additional property. Review of City of Durham GIS identified one
possible lot located down gradient. Parcel ID 103158 located at 908 W. Main Street
consists of a 0.166 acre parcel. Economic analysis includes the acquisition of the land. It
is assumed that current property owner would be willing to sell at or near appraised value.
According to Durham County Tax records the January 1, 2016 appraised value of the
parcel is $105,159.
Estimated Construction Cost:
Land acquisition $ 105,000
Asphalt removal and disposal (7,230 ft2 acres @ $3.50/ft2) $ 25,500
Infiltration gallery (3615 ft w/ 2 ft wide trench @ $20.00/ft) $ 72,500
Asphalt replacement (7,230 ft2 acres @ $2.00/ft2) $ 14,500
Connection of wet well to infiltration gallery $ 20,000
Directional bore under road $ 1,500
Legal fee (15% of land acquisition) $ 16,000
Engineering fee (12.5% construction cost) $ 17.000
Total Construction Cost $ 272,000
Ift M i d Atlantic
Engineering & Environmental S,21utions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
Estimated Annual Recurring Cost:
Labor to monitor system ($1,000/month)
Repair fund ($500/month)
Non -Discharge Permit Fee ($1,000/year)
Total Annual Cost
Present value for 20 year period and EPA discount rate of 5.875%
PV = 272,000 + 19,000[1(1 +0.05875)20-1 ]/{0.05875(1 +0.05875)201]
PV $492,000
4.3 Alternative C. Wastewater Reuse
May 19, 2017
Page 6
$ 12,000
$ 6,000
$ 1,000
$ $19,000
Reuse of wastewater for irrigation was determined unfeasible due to the dense urban
setting. Reuse of water for non -potable purposes in a residential setting is limited to urinal
and toilet flushing. Due to the variable rates of discharge from the wet well a stable water
source would be required to blend with the recovered water. The only stable water source
for the site is limited to raw potable water supply. In accordance with 15A NCAC 02U
.0403 (f) (1) "there shall be no direct cross -connections between the reclaimed water and
potable water systems." Based on these restraints wastewater reuse in not a viable
option.
4.4 Alternative D. Direct Discharge to Surface Waters
Under this alternative dewatered groundwater will be discharged into the City of Durham
storm sewer. Written approval from the City of Durham has been obtained and is included
in Appendix A. The City of Durham concluded we "may only discharge the groundwater
to the storm sewer if the water meets the standards listed for "Freshwater — Aquatic Life"
on the current North Carolina Department of Environmental Quality's 15A NCAC 02B
Surface Water Standards table." Monthly monitoring will be required to ensure the
discharge is not exceeding the standards. Upon demonstration of compliance for one
year the City will be petitioned to reduce sampling to semi-annual.
The City's primary concern with discharge is in regards to metals identified in the
groundwater samples. Groundwater samples were collected from the temporary
monitoring wells within two days of installation and the samples were not filtered prior to
collection. Based on these circumstances, the groundwater samples collected are not a
true indication of the dissolved metals. Once the dewatered groundwater wet well is
installed, during the temporary discharge to the POTW, confirmation samples can be
collected. In the event that metals are identified above discharge levels a filter system
can be added in-line to the treatment system prior to discharge to the storm sewer.
I (�. 1: Atlantic
ngineering & Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
May 19, 2017
Page 7
The water quality parameters of greatest concern are VOC's. The most common
treatment methods to reduce VOC's from recovered water are air stripping and carbon
adsorption. Air stripping was eliminated as a potential alternative due the unit requiring
an enclosed structure and the possibility of discharging impacted vapors near residential
units.
Carbon adsorption can effectively remove VOC contaminants. Carbon adsorption usage
based on the highest concentration of VOC's for the contaminates of concern (PCE and
Benzene) at an estimated flow rate of 0.55 gallons per minute is calculated to be 0.334
Ib/day. Calculation of carbon adsorption provided by the manufacture is included in
Appendix B. Utilizing a 200 Ib carbon vessel (55 -gallon) the carbon break out will occur
in approximately 20 months. Two 200 lb carbon vessel are proposed to be installed in
series. The carbon vessels will be housed in an enclosure with heater tracing to prevent
freeze damage to the equipment.
Estimated Construction Cost:
(Carbon Adsorption)
PRM GAC System $ 25,000
Connection of wet well to treatment system $ 10.000
Total Construction Cost
$
35,000
Estimated First Year Annual Cost
Monthly sampling first year ($1,250 / month)
$
15,000
System Maintenance ($1,200/year)
$
1,200
NPDES Permit Fee ($1,000/year)
1.000
Total Construction Cost
$
17,200
Estimated Subsequent Annual Recurring Cost:
Semi Annual Sampling subsequent years
$
2,500
Carbon Change out ($1,000/2 years)
$
500
System Maintenance ($1,200/year)
$
1,200
NPDES Permit Fee ($1,000/year)
$ 1,000
Total Annual Cost
$
$5,200
Present value for 20 year period and EPA discount rate of 5.875%
PV = 35,000 + 17,200 + 5,200[1(1+0.05875)20-1 )/10.05875(1 +0.05875)201]
PV = $112,500
f-%dantic
Engineering ,& Environmental Solutions

Engineering Alternatives Analysis
Solis Brightleaf Apartments
Durham, North Carolina
5.0 TECHNOLOGICALLY FEASIBLE ALTERNATIVES
The following provides a summary of the preceding economic evaluation.
Alternative
Discharge to POTW
Discharge by Land Application
Reuse: Non Discharge
Discharge to Surface Water
May 19, 2017
Page 8
Capital Recurring present Value
Cost Cost Cost
(Annual)
The City of Durham will not accept discharge long term
$272,000 $19,000 $492,000
Site conditions present non-viable option
$17,200+
$35,000 $5,200 $112,500
The low construction and operational cost of discharge to surface water is the most viable
and favored economic -based alternative.
Mid Atlantic
Engineering & Environmental Solutions

DRAWINGS
Mid Atlantic
Engineering & Environmental Solutions

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ETAIL
STEWART
421 FAYETT W EST; STE 400 RRMUCENSER G1051
RALEIGH, NC 27601 vmw.alewatintwm
TERWILLIGER PAPPAS
510 GLENWOOD AVENUE
SUITE 317
RALEIGH, NC 27603
T: 919.565.5266
Project:
SOLIS
BRIGHTLEAF
Vicinity map:
Seal:
PRELIMINARY - DO NOT
USE FOR CONSTRUCTION
Issued for:
DESIGN DEVELOPMENT
(FOR PRICING ONLY)
No. Date Description
0 10 20 40
SCALE: V=20'
FOUNDATION
DEWATERING PLAN
Project number: C16054 Sheet:
Date: 01.13.2016
Drawn by: —T
W C5. 10
I, Approved by: Ta

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TABLES
Mid Atlantic
Engineering & Environmental SoiK:Bo-as

TABLE 3.1
MONITORING WELL AND GROUNDWATER ELEVATION
FORMER HOWERTON BRYAN FUNERAL HOME
DURHAM, NORTH CAROLINA
MID-ATLANTIC PROJECT NO.: 82807.01
DATA
WELL ID
TOC (FI)
DATE
DTW (Fij
SWLE (FT}
TMW-1
99.85
2/7/17
7.18
92.67
TMW-2
90.35
2/7/17
6.93
83.42
TMW-3
96.65
2/7/17
6.71
89.94
TMW-4
94.88
2/7/17
4.99
89.89
NOES:
TOC - TCP G CASKG
DTW - DEPTi-IDWAIR BEMTOC
SWLE - STITCWAIR EIEVATCN

TABLE 3.2
SUMMARY OF VOLATILE ORGANIC COMPOUNDS DETECTED IN GROUNDWATER (L)GL)
FORMER HOWERTON BRYAN FUNERAL HOME
DURHAM, NORTH CAROLINA
MID -ATLANTIC PROJECT NO.: R2807.01
IHSB RESIDEN1AL
15A NCAC 02B SURADE
WEILID
ME4-IOD8260B
NCGQS (UG/L)
GR7UNDWAIERVI LEVELS
WAIERQUAlWSPAIDAMS
TMW-1
TMW-2
TMW-3
TMW-4
(UGL)
F11<91 WAIERAQUAIIC LIFE
DALE SAM PIED
(UG(L)
2/7/2017
2/7/2017
2/7/2017
2/7/2017
E1HYIENE DIBR MIDE
0.02
1.76
NE
<0.51
<0.051
<0.51
<0.051
1,2-DICHIDFCEIHANE
0.4
22
NE
<0.66
7.5
<0.66
6.5
TRCH11LDRCEIHANE
0.6
1,24
NE
<0.66
<0.066
<0.66
<0.066
BENZENE
1
15.9
NE
42
<0.48
<0.48
0.61
BF0MODICHLOR7VIET4ANE
0.6
8.76
NE
<0.62
<0.062
<0.62
<0.062
1LORJEIHENE
DICH
350
39.1
NE
<0.83
<0.083
<0.83
0.66
ISOPF0PYLE1HER
70
1,390
NE
<0.50
7.2
<0.50
<0.050
VINYL
CHLORIDE
0.03
1.47
NE
<0.97
<0.097
<0.97
<0.097
CJS -1,2
DICHLOR)E1HENE
70
NE
NE
82
1.5
<0.56
20
TV&1, 2-DICHLORJEHENE
100
NE
NE
<0.94
<0.094
<0.94
4.1
NAPIFIAIENE
6
34.8
NE
5.2 J
<0.19
<1.9
4.0
TEIFACHLOFDEHENE
0.7
11.5
11000
2,000
62
1,200
540
TRCHLOR]MENE
3
1.04
NE
28
3.3
<0.78
110
ME1HYL1ER1BU1YL ETHER
(MTBE)
20
4,500
NE
<0.42
14
<0.42
<0.042
NOIES- ug/L - microgram per liter
NCGQS - North Carolina Groundwater Quality Standard
IHSB - Inactive Hazardous Sites Branch
VI - Vapor Intrusion
NE - Not established
All Method Detection Limits (MDLs) below the Residential Groundwater VI Screening Leve
Bold - Detected concentration exceeds NCGQS or detection limit elevated above NCGQ!
Bold and Shaded - Exceeds NCGQS and Residential Groundwater VI Screening Leve

TABLE 3.3
SUMMARY OF ADDITIONAL PARAMETERS DETECTED IN GROUNDWATER (LeL)
FORMER HOWERTON BRYAN FUNERAL HOME
DURHAM, NORTH CAROLINA
MID -ATLANTIC PROJECT NO.: R2807.01
15A NCAC 02B
WFILID
ADDITIONAL
SUFE WATER TMW-1
TMW-2
TMW-3
TMW-4
PARAMETERS
NCGQS (UGL) QUAI11YS-IANDAFDS
DAIE SAMPLED
TESTED
FISH WAIERAQUAIIC
2/7/2017
LIFE (UGIL)
2/7/2017
2/7/2017
2/7/2017
BOD
NE 5,000 -
NA
--
--
TSS
NE NE 15,000,000
NA
21,000,000
3,000,000
TKN
10,000 NE 940
NA
1,500
610
Ammonia
NE NE --
NA
- L
--
Cyanide
70 5 --
NA
--
--
Arsenic
10 150 6.5
2.3
19
3.9
Selenium
NE 5 2.1
1.0
150
1.2
Cadmium
2 0.15 --
--
-
--
Chromium
5 11* 130
46
1,400
21
Copper
1,000 2.7 71 BH
64 BH
4,000 BH
26
Lead
15 0.54 40
36
--
22
Mercury
1 0.0012 --
--
--
--
Molybdenum
NE NE --
2.1
--
--
Nickel
100 16 120 BH
56
2,200 BH
25
Silver
20 0.06 --
--
--
--
Zinc
1,000 36 280 BH
170 BH
6,600 BH
76
Fluoride
2,000 1.8 120
120
--
--
Chloride
250,000 230,000 100,000
16,000
31,000
37,000
Field Measured Parameters
DO
NE >_4 3.13
4.69
4.14
4.22
pH
NE 6.0-9.0 5.33
6.32
5.53
6.04
Conductivity
NE NE 0.407
0.226
0.238
0.278
Temperature (°C)
NE NE 18.51
16.5
18.37
18.35
ORP
NE NE 80.8
60.7
12.3
121.4
Notes:
-- - Not detected at or above laboratory method detection limits
BOD - Biological Oxygen Demand
TSS - Total Suspended Solids
TKN - Total Kjeldahl Nitrogen
ORP - Oxidation -Reduction Potential
NCGQS - North Carolina Groundwater Quality Standard
Bold - Exceeds the NCGQS
Shaded - Exceeds Surface Water Quality Standards
NE - Not established
BH- Method Blank (MB) greater than one half of the reporting limit,
but the sample concentrations are greater than 10x the MB
NA - Not analyzed due to poor groundwater recharge in well
* Chromium VI

CITY OF DURHAM CORRESPONDENCE
Mid Atlantic
Engineering & Environmental Solutions

Ethan Caldwell
From: Battle, Gerald <[e-mail]>
Sent: Monday, April 03, 2017 8:37 AM
To: Ethan Caldwell
Subject: RE: Solis Brightleaf Development
Ethan,
I met with two of your associates onsite and shared with them the City would be willing to assist as a short term solution
for the discharge until issues are sorted and a permanent, long term solution is implemented. There is a bit of flexibility
in the short term timeframe but the expectation is that a solution is consistently being pursued and implemented within
a realistic timeframe. The City of Durham sanitary sewer should not be considered as a long term solution.
The City of Durham Sewer Use Ordinance Division 2 Section 70-216 reads:
(b)Specific prohibitions. No user shall contribute or cause to be contributed into the POTW the following
pollutants, substances, or wastewater:
(13) Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage,
swimming pool drainage, condensate, deionized water, noncontact cooling water and unpolluted
industrial wastewater, unless specifically authorized by the director.
8 will forward your stormwater question to the workgroup. One of them will contact you with the answer.
Gerald Tyrone Battle
Industrial Waste Control Administrator
Water Management, City of Durham
101 City Hall Plaza
Durham, NC 27701
(0) [phone] x. 35556
(C) [phone]
(F) [phone]
[e-mail]
http:ZZwww.durhamnc.gov/
From: Ethan Caldwell[mailto:[e-mail]]
Sent: Wednesday, March 29, 2017 5:09 PM
To: Battle, Gerald
Subject: Solis Brightleaf Development
Tyron,
I understand that Darin McClure and Dan Neilson have been in contact with you regarding discharge to the sanitary
sewer system for the Solis Brightleaf Development. I am in the process of preparing the NPDES permit Engineering

Alternative Analysis. Can you provide me a statement that long term discharge of groundwater to the sanitary sewer
system is not permitted by the City of Durham. If possible could you referenced the ordinance stating this.
Also, do you know who I would need to contact to obtain written approval to discharge to the storm sewer.
Thanks for your time.
; f M d Atlantic
4r,(-.ise+i -.� i Enr :.nenlr So7st+esnG
Ethan J. Caldwell, PE, LG
Senior Project Manager
MID -ATLANTIC ASSOCIATES, INC.
409 Rogers View Court I Raleigh, NC 27610
919-250-9918 1919-250-9950 (Facsimile) 1919-723-8231 (Mobile)
www.MAAONLINE.com I outstanding Service Since 1993
cawu`tai"alt l
To: em(; this sender from my allow list
From: [e-mail]
You received this message because the sender is on your allow list.
2
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DURHAM
CITY OF DURHAM
Public Works Department
Stormwater &GIS Services Division
101 CITY HALL PLAZA I DURHAM, NC 27701
919.560.43261 F 919.560.4316
1869
wuvw.DurhamNC.eov
CITY OF MEMCINE
April 13, 2017
Mr. Ethan Caldwell
Mid -Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, NC 27610
Mr. Caldwell,
The City of Durham Public Works Department (Stormwater & GIS Services Division) received your
request regarding an active NC Brownfields Project site located at 1005 W Main Street in Durham.
You stated that groundwater is expected to accumulate in a planned sub -surface parking structure
on the site and you requested permission to regularly discharge the accumulated groundwater to
the storm sewer system upon completion of the project. Water dis .-harged to the storm sewer from
this site would flow to South Ellerbe Creek via the proposed South Ellerbe Creek Wetland rear 506
W Trinity Avenue, You provided analytical results frorn several rnonitorinq wells on the site and
stated that any discharged groundwater would first be filtered through activated carbon.
After reviewing your proposed plan and the analtAJcal results, our office has decides; that you may
only discharge the groundwater to the storm sewer if the water meets, the standards fisted for
"Freshwater - Aquatic life" on the current forth Carolina Department of Environmental Quality's
15A NCAC 02B Surface Water Standards table. Several of the parameters in your analytical.
result: currently exceed these standards. You may need to consider changes to your proposed
treatment to ensure these standards are met. You .may access the Surface. Water Standard's table
at the f011owing website: https-//dein.nc.gov,s'about'divisionsiwater-resources/pianningiclassification-
standardsfsurface-water-star idard s.
Monthly Tnonitoring will be required to ensure the discharge is not exceeding these standards. This
office will request that this, requirement be included by the North Cardina Department of
Environmental Quality in the NPDES permit you will need for the site.
Prior to beginning the discharge, please provide us with updated analytical results showing the
concentrations of the same parameters after the groundwater has undergone the treatment you
deem necessary to meet these requirements.
If you have any questions, please feel free to contact our office (direct contact: Patrick Hogan, Sr.
Water Quality Technician, 919-560-4326 x30216, Patrick. Hogan@D urham NC.gov).
Sincerely,
Michelle Woolfolk
Water Quality Manager
City of Durham Public Works, Stormwater & GIS Services
Durham - Where Great Things Happen

1a��+�1'I,�I►�F7
DIRECT DISCHARGE TO SURFACE WATERS DOCUMENTATION
M ICS Atlantic
Engineering & Environmental Solutions

Mel Phillips
Phone: [phone]
Phone: [phone]
Email: mel.phillipsLaprm-net.com
pAOOUCT PECWFRY MANAQEAlII(T
Quote 321
Issue Date: 2017-05-10 Estimated Ship Date: 2017-05-10
— Sold To __�.....—
Mid-Atlantic Associates
409 Roger View Ct.
Raleigh, NC 27610
[phone]
Ship To
Mid -Atlantic Associates
Attn:
409 Rogers View Ct.
Raleigh, NC 27610
Sales Rep: Mel Phillips
Ln #
Quantity
Description
Unit Price Total
1
1
Custom Remediation System
PRM will manufacture and install a customized remediation
package for perched groundwater collected form the French Drain
System at the referenced facility.
The system will consists of.,
1/2HP sump pump with automated level control float. - 120VAC
300 gallon vertical equalization tank with HL switch and Pump
On/Off float switch
1 HP Centrifugal Transfer pump, 208-2301240V 3phase
(1) 304 SS - 2" 8x30 bag filter hsusing. - .
(2) LP55 RGAC low pressure carbon filtration vessels with
camlock connections and hose.
(1) System plumbing integration with Sch 80 PVC piping and PRV
i
valve for carbon pressure control
(1) High pressure alarm switch
(1) System Control panel - Nema 313, UL listed for 1201230V
3phase operatin
-Includes HOA switches for pumps
-includes Omni -beacon alarm telemetry monitor with 1 year of
service
-1S circuitry
Package is fully integrated, wired and tested on a common
process skid. Includes all required valves, gauges and sample
ports
Package is heat traced for unclassified zones.
Pagel / 2
Generated: 2017-05-1014:02:48
Continued on next page

I&
'A�M_
PRWUCT RECOVIM MANAGEN IM
Quote 321
Mel Phillips
Phone: [phone]
Phone: [phone]
Email: [e-mail]
Ln #
Quantity
Description
Unit Price
Total
Upon placement of an order, an engineering submittal will be
generated for the project for system approval prior to the build.
2
1
Option 1
System Installation and electrical terminations including
permitting. Includes delivery of the packaged system
3
Option 2
Upgrade control system to include Web600 Telemetry monitor
with active pressure monitoring, fault to email and remote log in
capabilities. Also provides totalization from Effluent Totalizer. Unit
allows for remote start/remote stop and also provides data
logging for event based actions as well as analog data.
4
Option 3
Provide (1) HP2001X Filter precharged with Resin -Tech CG -8
universal ion exchange resin. Used typically for the removal of
iron and other inorganic minerals in the stream. this adder
includes backwash piping for the IX filter. For a low flow
application, this option may not be required. The unit will also be
provided with bypass piping in the event levels are found to be
safe and the unit can be easily bypassed.
5
Option 4
Provide a UL Certification of the entire packaged Treatment Skid.
6
Option 5
PRM will provide a 3 sided chain linkfence, 8' tall with black out
screens for security purposes.
7
1
SALES TAX
To be determined at time of order. Price is not included in the
I
base pricing above.
The below signed authorizes Product Recovery Management to procurelconstruct andlor rent the items as
listed. Terms for this job are payment due Net 30 days from receipt of invoice unless otherwise noted. Service
Charges of 1.5% per month will he charged on all overdue invoices. If legal action is required to collect debts,
client egress to pay PRM reasonable attorney fees. This agreement Shall he governed by and construed in
accordance with the laws of the State of North Carolina and venue shall be proper and personal jurisdiction
had In Durham County, North Carolina. Sales and Use Taxes are collected in the following States: FL, NO, and
NY unless exempted. Sales & Use Tax in all other states is the responsibility of the purchaser. PRM gives
notice that it may use the tradename of PRMFILTRATION and recipients are duly informed of such.
Authorized And Accepted By (Signature)
Subtotal:
Tax:
Shipping:
Total:
Date Of Acceptance Purchase Order # Or Project Reference
Page 212
Generated: 2017-05-10 14:02.48

SUMP
WATER
DISCHARGE
A
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MID ATLANTIC
DATE:
5/9/17
SCALE
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P&ID-2

PRM C Arbon SVste s� LP55
PRM offers LP -66 Carbon Systems for Groundwater
Remediation and Industrial Process Systems.
The LP Series Carbon units are used on remediation
systems where higher flow volumes are expected
with minimal discharge head. This snit is
specifically designed to operate at low pressures
without sacrificing efficiency. Typical applications
are groundwater remediation for VOCs or industrial
sites with similar applications.
APPLICATIONS
Remediation of contaminated water streams
Designed to operate at low preogures wIthoi
sacrificing efficiency
STANDARD SPECIFICATIONS:
24" Diameter, 0" height
Weight, 225 lb Ivry, 500 Ib Wet
2" inlet and outlet connections
Max pressure 10 psi
Open top drum for easy removal and refill of carbon
a a a r ia. a *a~
PRd DUM RECOVERY MANAGEMENT
Quali r is our GoA... Genuine Service is our Habit!

inlet and outiet clatusers
for even flaw with less
channeling
Contains 200 Ib of WO
mesh VGAG or RGAC
AVAILABILITY: Build
Item, allow 2 to 4 weeks
for manufacturing and
shipping
R x 30 L iq 110 G arba n Pra® ®urs Drop Ya. F loaw
24" Paametorl,F VoueO
Flow S9 pm"
Product I' ecavervManaciernent, Incorporated
Y •
88&873-2848 319-9574890 ww,prmn net -.coo [e-mail]
Butner, NC - Webster NY ■ Lakeland FL
* Actual equipment specifications may vary. Please contact product Recovery Management, Inc. for additional details. E-05

tetraS LV
F I L T R A T 1 0 N
Liquid Phase Consumption Calculatioi
WATER FLOW RATE (gpm) :
Carbon Bed size (Ibs)
Compound
0.55
50
Job
Rev 2
04/05/17
Inlet AdsorptionCarbon Usage Carbon Usage Carbon Usage
Concentration Capacity (lb GACi Corrected For Rate
1000 gal H201 TOC
(lb GAC! (Ib gac
(u m/I) % w/w 1000 gal H201 124 hrs
BENZENE 40.0 0.3871 0.0876 0.335 0.266
PCE 2000.0 5.0801 0.33351 0.624 0.494
Total GAC Usage 2040 0.4219 0.9589 0.76
Carbon Usage 0.334 Ib/day without TOC Background - Groundwater
0.759 Ib/day with TOC Background
Average Adsorption Capacity 4.04% w/w without TOC Background - Groundwater
1.77% wlw with TOC Background
Carbon Bed life (months) 4.9974 months without TOC Background - Groundwater
2.1945 months with TOC Background

BCTTOM OF TRENCH -
BOTTOMOFTRENCH
389.0
4 -
BOTTOM OF TRENCH --
399.0
•
2 "DE TRENCH DRAIN /
SEE DETAIL. THIS SHEET
i`
BOTTOM OF TRENCH
389-0
BOTTOM OF TRENCH -
BOTTOM OF TRENCH
383.5
Varies
(typ. 1.2 ft) .. .
`\ BOTTOM OF TRENCH
383.1
J
\\
= OUTLET TOTO
DRAM SYSTEMMTTO WET
` 1
WELL WITH PUMP.
BOTTOM ELEV. 378.0
�-
�� BOTTOM OF TRENCH ,
38"..2
-
1S' DIP FORCEMAIN TO
AIR SCRUBBER LOCATED
IN STAIRWELL
Concrete Slab
,•....,!?-..;.ms's..
#57 Washed Stone
N \ \
2.Oft LT \\\: ,\\
Mlrafi 180N, or approved equal
(18 in. overlap on top of stone
and along length of trench)
- I 4 -In. ID Sch. 40 pert. pipe
2.00 (holesdawn)(only required
where shown on plans)
TRENCH DRAIN DETAIL
1E7AJ
STEWART
Q1 WErTEVILLEST. STE 400 FIRM LICENSE k-051
RALEIGXi NC 21601 �waknucOm
T910. irr50 PROJECT 9: C16054
Client:
TERWILLIGER PAPPAS
510 GLENWOOD AVENUE
SUITE 317
RALEIGH, NC 27603
T: 919.585.5268
Project:
SOLIS
BRIGHTLEAF
Vicinity map:
Seal:
PRELIMINARY - DO NOT
USE FOR CONSTRUCTION
Issued for.
DESIGN DEVELOPMENT
(FOR PRICING ONLY)
II No. Data Description
[7.71
0 10 20 40
SCALE: 1
Title: — —
FOUNDATION
DEWATERING PLAN
Project number: C16054 Sheet:
Date: 01.13.2016 /� /� 1
Drawn ed AW 1 _ 5 . 1 O
Approved by: TS V V

.LON INFLUENT TANK
SUMP
TRANSFER PUMP
BAG FILTER
I
ION EXCHANGE RESIN
OPTIONAL
I
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I I
I I
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LIQUID PHASE CARBONS
LP -55
WATER
DISCHARGE
A
Ppm
..
PRODUCT RECOVERY MANAGEMENT
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CAD FILE
MID ATLANTIC
DATE.
5/9/17
SCALE:
NTS
DRAWING NO.
P&ID-2