WI0500180_Geothermal Well Sampling Report_20240116

North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200

January 16, 2024 Amy Rogers NP Loden Durham, LLC c/o York Properties Incorporated 2108 Clark Avenue Raleigh, NC 27605 Sent Via Email Subject: Laboratory Analytical Results for Geothermal Well Sampling Permit WI0500180 102 City Hall Plaza/200 North Mangum Street Durham, NC 27701 – Durham County Ms. Rogers:
On August 8, 2023, Michael Hall, Blake Butcher, Timothy Clark, Elaine Wild, and Kristina Morales of the
Division of Water Resources (DWR), Raleigh (RRO) visited the above-referenced site to evaluate
compliance with regard to above-referenced geothermal well permit and to collect water samples from
the geothermal well system. A follow-up site visit including Michael Hall, Timothy Clark, and Elaine Wild
was required on October 27, 2023 to complete sampling. We greatly appreciate the assistance of Chris
Loyd from Trademasters, who met the team on site for both site visits, and provided them with access
to the wells and equipment.

This compliance evaluation was in support of renewal of the geothermal well permit, which was granted
December 12, 2023. The system includes three, open-loop, geothermal wells (Figure 1) used for heating
and cooling of the two buildings on the property. The evaluation included:

• Inspection of the well completions for well W1, W2, and W3.
• Inspection of the piping and sample ports associated with the geothermal wells.
• Sampling of water from the influent and effluent pipes associated with the geothermal system
associated with each well.
• Review of the laboratory analytical data for the sampling.
During the initial site visit on August 8, only wells identified as W2 and W3 (Figure 1) could be located.
Furthermore, samples could only be collected from the geothermal system identified as “1”
(photographs), located in basement of the Southern building. The geothermal system identified as “2”
was also located in this building, but was not operational during the initial site visit, and could not be
sampled. The third geothermal system is located in the basement of the Northern building, which was
not accessible during the initial site inspection. The follow-up site visit was performed following
location of the well identified as W1 (Figure 1), and repair of the geothermal system identified as “2”.
The team was also able to access the basement of the Northern building, and obtained a sample from
the system located there, presumably associated with well W3.

The following observations were made during this evaluation:
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200

1. The well completions for W1 and W3 (Figure 1, photographs) were in good condition, with no
obvious damage to the well seal or piping. The completion for W2 is located in a planter, and
was filled with water during the initial site visit, presumably from the condensate pipe which
discharged into the completion. This discharge was removed before the follow-up site visit, and
the well completion was dry. The team observed extensive rust and corrosion of the metal
vault, as well as obvious rust and pitting of the well cap (photographs).
2. The geothermal well systems in the southern building were labeled “1” and “2” (photographs)
and were assumed to correspond with the wells labeled W1 and W2 (Figure 1). The system in
the Northern building was not labeled at all, but was assumed to be associated with well W3.
The influent and effluent ports were not identified on any of the three systems. With assistance
from Mr. Loyd, the team made the assumption that the influent was the upper-most port, and
the effluent the lower-most port for each system.
3. The geothermal piping seemed to be in reasonably good condition, with no obvious signs of
leaking.

Groundwater Sampling and Analysis
Groundwater samples were collected directly from the taps for the geothermal systems (photographs).
Prior to sampling, the taps were disinfected by spraying them with isopropyl alcohol to avoid
contamination of the total and fecal coliform samples. Samples were collected directly from the tap into
laboratory sample bottles which were pre-preserved, when necessary.

Following sampling, water quality measurements were collected using an InSitu SmarTroll©. For these
measurements, water was allowed to discharge to a container, which overflowed into a floor drain. The
water quality probe was placed in the container to obtain a measurement from the free-flowing water.
Water quality measurements were recorded, along with other relevant information, on Water Sample
Collection and Submittal Forms (attached). Samples were labeled, placed in a cooler with ice, and hand
delivered to the North Carolina Department of Environmental Quality Laboratory for analysis.

Laboratory analyses (attached) indicated that most of the target analytes were present at
concentrations below the North Carolina Groundwater Standard (15A NCAC 02L), with the exception of
total and fecal coliform, iron, and lead (Table 1). Specifically, the following results were noted:

• Fecal and Total Coliform - Concentrations were above the North Carolina Groundwater
Standard in all samples analyzed. While cross contamination is possible even with disinfection of
the sampling ports, it is also possible that there are coliform present in the wells and geothermal
system.
• Iron – Concentrations were above the North Carolina Groundwater Standard in all samples
analyzed. Iron has been detected consistently, at similar concentrations, in samples collected
during previous inspections, and is found at similar concentrations in both influent and effluent
samples. Iron is a naturally-occurring constituent, and given the historical trends as well as the
similarity of concentrations between influent and effluent samples, the elevated concentrations
do not appear to be indicative of impact.
• Lead – Lead was found at a concentration 15 micrograms per liter (ug/l) in the effluent sample
for Well 3. This concentration is equal to the Groundwater Standard, and almost four times the
concentration for the influent sample (4 ug/l). This constituent was detected at concentrations
near the Groundwater Standard during previous sampling events. Lead is a naturally-occurring
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200
constituent, and given the historical detections at similar concentrations, the elevated
concentration does not appear to be indicative of impact.

Required Response
As indicated in the permit renewal letter from Blake Butcher (December 13, 2023), you have been
requested to provide the following within 90 days (March 13, 2024) of the permit renewal letter date:

1. Contact the RRO and verify the correct nomenclature of the wells and their locations. The
attached map indicates our current understanding of the names and locations of these wells.
2. Identify and label all the wells and their sample ports and provide the RRO with proof
(photograph of the wells and sample ports, or additional inspection) that this has been done.
3. Have a licensed well driller inspect the vault and well seal for W2, make repairs as necessary,
and provide a written verification to the RRO summarizing these repairs and affirming that the
vault and well seal are sound. The DWR strongly recommends either removal of the planter
from this area, or reconstruction of the vault to prevent water from entering the vault.
4. Ensure that the vault for W1 is readily accessible.

In addition, based on the laboratory analytical results received, the RRO requires the following:

1. Take steps to verify the laboratory analytical results for coliform. If the wells and geothermal
systems are found to contain coliform, have a licensed well driller disinfect the wells and
geothermal systems, and verify that the seals for all of the wells are sound, and do not allow
infiltration of surface water.

If you have any questions regarding these results and requirements, please contact Michael Hall at (919)
791-4237 or via email at [e-mail].

Sincerely,

Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ

Enclosure: Figure 1
Table 1
Photographs
Water Sample Collection and Submittal Forms
Laboratory Analytical Reports

Ec: Blake Butcher, North Carolina Department of Environmental Quality
Durham County Health Department
Laserfiche
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Summary of Constituents Exceeding the North Carolina Groundwater Standard
Geothermal Well System WI0500189
North Carolina 
Groundwater 
Standard
P1 (W1) P2 (W2) P3 (W3)
Constituent Unit  15A NCAC 02L  Influent  Effluent  Influent  Effluent  Influent Effluent
Total Coliform CFU/100 ml CFU/100 ml 1 1 45 12 25 24
Fecal Coliform CFU/100 ml CFU/100 ml 1381111
Iron ug/l ug/l 600 580 600 370 350 370
Lead ug/l ug/l <2.0 <2.0 <2.0 3.1 4 15
Notes:
Bold Constituent was detected.
Highlight Constituent exceeds Groundwater Standard.
  CFU/100 ml Colony forming unit per 100 milliliters.
  ug/l Micrograms per liter.
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
Photograph 1
View of compleƟon for W3 (08/30/2023).

Photograph 2
View of compleƟon for W1 following locaƟon and excavaƟon
(10/27/2023).

WI0500180 2023 InspecƟon Photographs
102 City Hall Plaza/ Durham County
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
Photograph 3
View of compleƟon for W2 during iniƟal inspecƟon (08/30/2023). Note
condensate pip and standing water in compleƟon.
Photograph 4
View of compleƟon for W2 following removal of condensate pipe and
draining of water (10/27/2023). Note extensive rust and corrosion on
vault and piƫng of the well seal.

WI0500180 2023 InspecƟon Photographs
102 City Hall Plaza/ Durham County
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
Photograph 5
Geothermal system piping labeled “1” and “2” in basement of southern
building, with assumed locaƟons of influent and effluent ports.

Photograph 6
Geothermal system piping in basement of northern building (assumed
to be for W3) with assumed locaƟon of influent and effluent ports.

WI0500180 2023 InspecƟon Photographs
102 City Hall Plaza/ Durham County
P2 Influent 
P2 Effluent 
P1 Influent 
P1 Effluent 
P2 Effluent 
P2 Influent 
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources Visit ID: Tag
Laboratory Water Sciences Section
Water Sample Collection&Submittal Form
IDrY( CD(optional)
IIIIIIIIIIIIIIIIIIIIIIIIIIIILocationDescription: City Hall Plaza Location Code: (P I
S IIIIIIIIIIIIIIIII1r
Priority: Water Matrix: Location Type: AD13637
County: Durham Collector: Michael Hall
Ambient Surface River/Stream Lake T Date Rec 8/30/2023 13:00
DWR Region:
Raleigh Raleigh Regional
DWR Office: Routine Ground Estuary Canal
based on county) or agency name) Compliance Waste Stormwater Influent
Received By:
River Basin: Neuse m/d/y): 30/2c)`S 9/-3n/2 3
COC Blank Monitoring Well Filter Blank
Emergency Solution Effluent Trip Blank State Courie
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Notes: Geothermal Injection Well W10500180
Time(24 hr):
Q
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begin/end) 09• 3 U l • 4-5 Method Development Other: Other:
Sampling Grab Chlorinated Filtered Dissolved analysis:Enter"DIS"in Sample Secchi Temperature on 7
Meehad:
Other ogin file: Jcomposi[ De-chlorinated in Field in Field check-boxes for parameters Depth: Depth: Arrival('CJ:
Lab Comments:
Lot fls/
Collector Fecal LN-20230126 Sulfuric LN -3031050 Nitric LN-3031130
Comments:
Field Parameters(optional): Dissolved Oxygen /
d /
Conductivity: i
Salinity
O
Water Temp(°C): -3 S-• 1& PH(s.u.):
Y S PPm): V t ! I(vmhos/cm)a' 1Preservative:Y O p ppt):
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X -oliform:Fecal MF l B-C COD:Chemical Oxygen Demand A-D r X--Alumihurn(AI)E- -) Thallium(TI) E
X Coliform:Total lAj B-C Cyanide,Total A-H-P Antimony(Sb)E Tin(Sn) E
TOC-TotalOrganicCarbon A-G Hexavalent Chromium(Cr6+)' A-I Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,HEM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be)E X`-Zinc(Zn) E
BOD:Biochemical Oxygen Demand,5-day A Sulfide A-J Cadmium(Cd)E Imercury 1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(Not Chemically Preserved) Preservative X Calcium(Ca) )E Boron(B)E
Specific Conductance,at25°C A Bromide A X Chiomium(Cr),Total' E X Hardness,Totala'sCSC03=6yt[[ratlon_? E
Turbidity A X Chloride } A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A X Copper(Cu) E Acid Herbicides A-C
pH Y Sulfate A X Iron(Fe) I E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A X Lead(Ph) E Organonitrogen Pesticides A-C
Ammonia as N(NH3-N) A-C-D Color:ADM[ A Lithium(Li) E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+NO2-N)---I A-D Color:Platinum Cobalt A X Magnesium(Mg)., E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A J X' Manganese(Mn E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids) A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X Residue:_Suspended(Suspended Solids)_ A X Nickel(Ni)e E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated)IResidue:Volatile/Fixed,Suspended A X Potassium(K),; E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X I Residue:Total Dissolved(TDS)) A Selenium(Se) E Perfluorinated Compounds(PFAS) A-T
Cyanotoxins Preservative ISilica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin I X Sodium(Na)_ _I E Phytoplankton/Algae A-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool 566C,(B)cool<10°C,( C)0.008%Na2Sz03[when chlorine is present],(D)HzSO,to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>30< 31,(1)(NH4)2SO4 pH=9.3-9.7,(J)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources Visit ID: TagWaterSampleCollection&Submittal Form
Laboratory(Water Sciences Section) optional) `-ID
Laorabora
Samph IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIILocationDescription: City Hall Plaza Location Cade:r
MID/Y AD13638Priority: Water Matrix: Location Type:
County: Durham Collector: Michael Hall
Ambient Surface River/Stream Lake TimeR. Date Rec 8/30/2023 13:0
DWR Region:
Raleigh
DWR Office:
Raleigh Regional
Routine Ground Estuary Canal 24 hrf.
based on county) or agency name) Compliance Waste Stormwater Influent
More
COC Blank Monitoring Well Filter Blank
Received By:
River Basin: Neuse m/d/y): 36/2a- /-"0/ Z
Emergency Solution Effluent Trip Blank State Courier
MailTime(24 hr): Q C ) `•
CIA Foam Field Blank Water Supply Delivery Method: Hand Delivered
Notes: Geothermal Injection Well W10500180 (
begin/end) l `y I v ® Method Development Other: Other:
Sampling Grab Chlorinated Filtered Dissolved analysis:Enter"DIS"in Sample Secchi TT,-per,,ture on
memos:
Other ogin file: J
Composit De-chlorinated in Field in Field check-boxesforparameters Depth: Depth: L):
Lab Comments:
Lot#s/
Collector Fecal LN-20230126 Sulfuric LN -3031050 N itric LN-3031130
Comments:
Field Parameters(optional): Dissolved Oxygen Conductivity Salinity
Water Temp(°C):pH(s.u.): q
Preservative:Y O m l PPm): I V llimhas/cm): •J (ppt): D
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X Coliform:.Fecal MF B-C COD:Chemical Oxygen Demand A-D 5 Aluminum(AI) , E Thallium(TI) E
X Coliform:Total MF, B-C Cyanide,Total A-H-P Antimony(Sb)E Tin(Sri) E
TOC-Total Organic Carbon A-G Hexavalent Chromium(Cr6+). A-I Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,H EM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be)E j X Zinc(Zn)E
BOD:Biochemical Oxygen Demand,5-day A Sulfide A-J Cadmium(Cd)E Mercury 1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters'(N of Chemically Preserved) Preservative;X Glciuru(Ca)^j E IBoron(B) _ _ E
Specific Conductance,at 25°C A Bromide A X'Chromium(CF),Total' E f X Hardne_ss,Totai.as.Caco3 by titration,l E
Turbidity A X Chloride A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A X Camper(Cull E Acid Herbicides A-C
pH Y Sulfate A X Iron(Fe) 1 E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A r X Lead(Pb), E Organonitrogen Pesticides A-C
Ammonia as N(NH3-N) _ A-C- D Color:ADMI A Lithium(Li) E Organophosphorus Pesticides A-C
X
F
Nitrate-Nitrite as N(NO3+NO2-N)—/ A-D Color:Platinum Cobalt A X~Magnesium(Mg) E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn)rI E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids j A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X— Residue:Suspended(Suspended Solids) A X Nickel(Ni)," E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A X Potassium(K).) E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X^Residue:Total Dissolved(TDS)_ A Selenium(Se) E Perfluorinated Compounds(PFAS) A-T
Cyanotoxins Preservative Silica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin X Sodium(Na)._J) E Phy[oplankton/Algae. q-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool<_6°C,(B)cool<10°C,(C)0.008%Na2S203[when chlorine is present],(D)H2SO4 to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)H3PO4 tO pH<2,(H)6N NaOH to pH>10< 11,(1)(NHJ2SO4 pH=9. 3-9.7,(J)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources Visit ID: Tag
Water Sample Collection&Submittal FormCD1Laboratory(Water Sciences Section) optional) ID
Location Description: City Hall Plaza Location Code: II II IIII IIII IIII IIIII IIIII IIII III IIII
Priority: Water Matrix: Location Type: AD15.03-9
County: Durham Collector: Michael Hall
Ambient Surface River/Stream Lake Date ReC 10/27/2023 11:45
OWRRegion: Raleigh IDWRoffice: Routine Ground Estuary Canal
Raleigh Regional
based on county) for agency name) Compliance Waste Stormwater Influent
Received By: v-
1.4
COCBlank Monitoring Well Filter Blank
RiverBasin: Neuse m/d/y): 3 f(J f2-7/Z3 Emergency Solution Effluent Trip Blank
niStateurier7 o :
QA Foam ri Field Blank Water Supply Delivery Method:livered
Notes: Geothermal Injection Well WI0500180
MethodDevelopment Other:
s,mpnaa Grab Chlorinated Filtered Dissolved analysis:l nter"ols"in Sample Secchi Temperature on
m enaa:
Other o inle:
Camposit De-chlorinated in Field in Field check-boxes for parameters Depth: Depth: Arrival(°C):
Lab Comments:
Lot#s/
Collector Fecal LN-20230126 Sulfuric LN -3031050 N itric LN-3031130
Comments:
Field Parameters(optional): Y Dissolved Oxygen Conductivity Salinity
Water Temp(°C): 2, _q.1 pH(s.u.):
V m 9 PPt): •1Preservative:Y pp ): Nmhos/cm):
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X_Coliform_Fec_al MF B-C COD:Chemical Oxygen Demand A-D X Aluminum(AI)E Thallium(TI) E
X Coliform:Total MF B-C Cyanide,Total A-H-P Antimony(Sb)E Tin(Sri) E
TOC-Total Organic Carbon A-G Hexavalent Chromium(Cr6+) A-1 Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,H EM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be)E X_Zinc.(Zn) E
SOD:Biochemical Oxygen Demand,5-day A Sulfide A-J Cadmium(Cd)E Mercury1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(Not Chemically Preserved) Preservative;X Calcium(Ca)__J E I Boron(B)E
Specific Conductance,at 25°C A Bromide A X Chromium(Cr),_To tal J E X Hardness,_Total.as-cocoa=.by.titration`i E
Turbidity A X Chloride,L) A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A X Copper(Cu) 'j E Acid Herbicides A-C
pH Y Sulfate A X Iron(Fe) l E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A I X Lead-(Pb),i E Organonitrogen Pesticides A-C
Ammonia asN(NH3-N) A-C-D Color:ADMI A Lithium(Li) E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+NO2-N) A-D Color:Platinum Cobalt A X!Magnesium.(Mg) E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn)' E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids) A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X Residue:Suspended(Suspended Solids)A X Nickel.(Ni)—E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A i X—Potassium(K)=j E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X Residue:Total Dissolved(TDS) A ISelenium(Se) E Perfluorinated Compounds(PFAS) A-T
Cyanotoxins Preservative Silica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin X_Sodium-(Na)—_/I E Phytoplankton/Algae A-R
Strontium(Sr) I E I
Preservative Legend(circle above as needed) :(A)cool<_6°C,(B)cool<10°C,( C)0.009%Na 2S203(when chlorine is present],(D)H2504 to pH<2,(E)HNO3 to pH<2,(F)HCl to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>10<31,(1)(NH4)2SO4 pH=9.3-9. 7,(1)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources Visit ID: Tag
Laboratory(Water Sciences Section)
Water Sample Collection&Submittal Form optional) ID
OOLL
IIIIIII IIIIIIIII III IIIIIIIII IIII IIIIIIILocationDescription: City Hall Plaza Location Code: _ -1 _ f
AD15038
Priority:—--Water Matrix. Location-Type:—_
County: Durham Collector: Michael Hall
i
Date Rec 10/27/2023 11:45
Ambient Surface River/Stream Lake
DWRRegion:
Raleigh
DWROJfice:
Raleigh Regional
Routine Ground Estuary Canal
based on county) or agency name) Compliance Waste Stormwater Influent
mare
Received By.,
COC Blank Monitoring Well Filter Blank
River Basin: Neuse m/d/yJ: a3 `Q /7/3 Emergency Solution Effluent Trip Blank State Courier
Notes: Geothermal Injection Well W10500180
Time(24 hr): /(-
J :
CIA Foam Field Blank Water Supply Delivery Method., Hand Delivered
beginlend) I ° 0 Method Development Other: Other:
sampr°z
Grab Chlorinated Filtered Dissolved analysis:Enter"DIs•'in sample Secchi Temperature on
method:
Other ogin file:
composit De-chlorinated in Field in Field check-boxes for parameters Depth: Depth: Arrival(°C):
Lab Comments:
Lot#s/
Collector Fecal LN-20230126 Sulfuric LN -3031050 N itric LN-3031130
Comments:
Field Parameters(optional): Dissolved Oxygen Conductivity r
sr,,
Salinity
Water Temp(°C): - e33 pH(s.u.): t
m
L-8 µmhos/cm:
3 ° 1 t °
Preservative:Y t v pP ) pp)•
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X COliform_Fecal MF) B-C COD:Chemical Oxygen Dem and A-D X Aluminurn(AI)-—J E Thallium(TI) E
X Coliform:Total MF B-C Cyanide,Total A-H-P Antimony(Sb)E Tin(Sri) E
TOC-TotalOrganicCarbon A-G Hexavalent Chromium(Cr6+) A-1 Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved)' Preservative Oil and Grease,H EM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be)E X Zinc(Zn) / E
BOD:Biochemical Oxygen Demand,5-day A I ISulficle A-J ICadmium(Cd)E Mercury1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(N of Chemically Preserved) Preservative X Calcium(Ca)
t
E Boron(B)E
Specific Conductance,at 25°C A Bromide A X Chromium(Cr),-Total E X Hardness,Total as Cacw-4y-titration`./ - E
Turbidity A j X Chloride J A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A (X Copper no J E Acid Herbicides A-C
pH Y Sulfate A Xl Iron(Fe) E Organochlorine Pesticides A'C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A X Lead(Pb)) E Organonitrogen Pesticides A-C
Ammonia as N(NH3-N) A-C-D Color:ADMI A Lithium(Li) E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+_NO2-N)j A-D Color:Platinum Cobalt A X Magnesium(Mg)
t
E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn) -- E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids) A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X Residue:Suspended(Suspended Solids)
t
A X Nickel(Ni)—/ E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A X Potassium(K)I E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z I X Residue:Total Dissolved(IDS)) A Selenium(Se) E Perfluorinated Compounds(PFAS) A-T
Cyanotoxins Preservative Silica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin X Sodium(Na)_J E LEoplan]kton/Algae I A-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool<_6°C,(B)cool<30°C,(C)0.008%NazS.03[when chlorine is present],(D)H2SO4 to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>10< 11,(1)(NH4)2SO4 pH=9.3-9.7,(J)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 in inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/ 3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources Visit ID: Tag
Water Sample Collection&Submittal Form
Laboratory(Water Sciences Section) optional) ID
IIIIIIIIIIIIIIIIIIIIIIIIIIISt
Location Description: City Hall Plaza Location Code: IIIIIIIIIIIIIIIII I3LDa
County: Durham Collector: Michael Hall
Priority.:_ _Water Matrix:__ Location-Type: M, AD15040
Ambient Surface River/Stream Lake Tit Date Rec 10/27/2023 11:4
DWRRegion: DWROffice: Routine Ground Estuary Canal 2,
Raleigh Raleigh Regional
based on county)
Raleigh
agency name) Compliance Waste Stormwater Influent
COC Blank Monitoring Well Filter Blank
Received By:
River Basin: Neuse m/d/yJ: Z7/ )Q /Z'? /(J Emergency Solution Effluent Trip Blank Ci tote Courier
Time(24 hr): 1
CIA Foam Field Blank Water Supply Delivery Method: and Delivered
Notes: Geothermal Injection Well WI0500180 1 b . Method Development Other: Other:beginlend)
Sampling
Grab Chlorinated Filtered Dissolved analysis:Enter"DIS"in Sample Secchi Temperature an
Method: M° od:
Other login file:
composit De-chlorinated in Field in Field check-boxes for parameters Depth: Depth: Arrival('C):
Lab Comments:
Lot#s/
Collector Fecal LN-20230126 Sulfuric LN -3031050 N itric LN-3031230
Comments:
Field Parameters(optional): Dissolved Oxygen Conductivity Salinity
Water Temp(°C)= /
r
PH(s.u.): X ,
1 O 3 C 1Preservative:Y C`a cUr ppm): b µmhos/cm): ppt): L/
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
v X Coliform_Fecal-MF B-C COD:Chemical Oxygen Demand A-D J X Aluminum(AI)E Thallium(TI) E
X ComMF e-C Total Antimony(Sb)rTa E Tin(Sn) E
TOC-TotalOrganicCarbon A-G Hexavalent Chromium(Cr6+) A-I Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,H EM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be)E X 'Zinc(Zn)__ E
BOD:Biochemical Oxygen Demand,5-day A Sulfide A-J lCadmium(Cd)E Mercury1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(Not Chemically Preserved) Preservative X Calcium(Ca)) E Boron(B)E
Specific Conductance,at 25°C A Bromide A j X _ Chromium(Cr),Total) E X Hardness,Total as CaCO3-by titration E
Turbidity A X Chloride 7 A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A X Copper(Cu) f E Acid Herbicides A-C
pH Y Sulfate A X Iron(Fe) E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A X Lead(Pb)-f E Organonitrogen Pesticides A-C
Ammonia asN(NH3-N) A-C-D Color:ADMI A Lithium(Li)_ E Organophosphorus Pesticides A-C
X
F
Nitrate-Nitrite as N(NO3+ NO2;N} A-D Color:Platinum Cobalt A X Magnesium(Mg)
r
E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn)) E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids) A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X—Residue:Suspended(Suspended Solids)A (X Nickel(Ni) E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A X Potassium(K);E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X Residue:Total Dissolved(TDS) J A Selenium(Se) E Perfluorinated Compounds(PFAS) A-T
Cyanotoxins Preservative Silica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin X Sodium(NaJ_ E Phytoplankton/Algae A-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool 56"C,(B)cool<30"C,(C)0.008%N32S203[when chlorine is present],(D)H2SO4 to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>30<31,(1)(NH4)2SO4 pH=9.3- 9.7,(1)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/ 3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
North Carolina Division of Water Resources
Water Sample Collection&Submittal Form
Visit ID: Tag
Laboratory(Water Sciences Section) optional) ID
Sar,IIIIIII(IIIIIII IIIIIIIIIIIIIIIIIII IIIIIIILocationDescription: City Hall Plaza Location Code:
s
Dal
Priority: - aterMatriz: -----Location Type: M/ AD15041
County: Durham Collector. Michael Hall
Ambient er/Stre----ce F--------------am------ -- --------------
Date Rec 10/27/2023 11:45ivLakeTim
DWRRegion:
Raleigh
DWROffice:
Raleigh Regional
Routine Ground Estuary Canal 24-
based on county) or agency name) Compliance Waste Stormwater Influent
Received By:
COC Blank Monitoring Well Filter Blank
River Basin: Neuse m/d/yJ: D /Z/z( ' /2/23 -Emergency Solution Effluent Trip Blank State Courier
Time(24 hr): QA Foam Field Blank Water Supply Delivery Method: Hand Delivered
Notes: Geothermal Injection Well W10500180 D C
begin/end) Method Development Other: Other:
sampraz"
Grpal Chlorinated Filtered Dissolved analysis:Enter"DIS"in Sample Fecchi Temperature on
m.enaa:
Other ogin file:
De-chlorinated in Field in Field check-boxes for parameters Depth: epth: Arrival
Lab Comments:
Lot#s/
Collector Fecal LN-20230126 Sulfuric LN -3031050 Nitric LN-3031130
Comments:
Field Parameters(optional): Dissolved Oxygen Conductivity ry Salinity
Water Temp(°C): / Zq 1pH(s.u.):
m 7 r 1 4}— µmhos/cm: r r -3 Z V' I
Preservative:Y Pp m): PPt)
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X Coliform:Fecal MF B-C COD:Chemical Oxygen Demand A-D X Aluminum(AI)_' E Thallium(TI) E
X Coliform:Total MF / B-C Cyanide,Total A-H-P Antimony(Sb)E Tin(Sn) E
TOC-Total Organic Carbon A-G Hexavalent Chromium(Cr6+) A,-I Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,HEM,Total Recoverable A-D Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M Beryllium(Be) E X Zinc(Zn) j E
BOD:Biochemical Oxygen Demand,5-day A Sulfide A-J Cadmium(Cd)E Mercury 1631,low-level
CBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(N of Chemically Preserved) Preservative IX Calcium(Ca) E Boron(B)E
Specific Conductance,at 25 oC A Bromide A I X Chromium_(Cr),Total-/ E X Hirdness,T6tel as Cico3-bytitiatic n -' E
Turbidity A
r
X Chloride_ A Cobalt(Co) E Organics Parameters Preservative
Other Parameters Preservative Fluoride A X Copper(Cu)) E Acid Herbicides A-C
pH Y Sulfate A X Iron(Fe)1 E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A (X Lead(Ph) J E Organonitrogen Pesticides A-C
Ammonia as N(NH 3-N) A-C-D Color:ADMI A Lithium(Li) E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+NO2--N) )A-D Color:Platinum Cobalt A 'X Magnesium(Mg) J E PCBs(polychlorinated biphenyls) A-C
Total Kjeldahl Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn) E Semi-Volatile Organics(BNAs) A-C
Total Phosphorus as P(TP) A-D Residue:Total(Total Solids) A Mercury(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A X Residue:Suspended(Suspended Solids-)-- A X_ Nickel(Ni)_ _ E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A X Potassium(K)_ f E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X Residue:Total Dissolved(TDS)J A Selenium(Se) E Perfluorinated Compounds(PEAS) A-T
Cyanotoxins Preservative Silica A Silver(Ag) E Biological Preservative
Microcystin A Tannin&Lignin X _Sodium_(Na)
i
E Phytoplankton/Algae A-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool<6°C,(B)cool<10*C,( C)0.008%NazSz03[when chlorine is present],(D)HzSOa to pH<2,(E)HNO3 to PH<2,(F)HCI to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>10<11,(1)(NH4)2SO4 pH=9.3-9.7,(1)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid(when chlorine is present),(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inures using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1
DocuSign Envelope ID: DD0B2216-8344-4E35-B90E-3C0E018F9CE1