6 - SOO - SBGNDRF Portable Media Filter for PFAS Removal_1.pdf

FOR OFFICIAL USE ONLY

Statement of Objectives (Supply Contract)

Brackish Groundwater National Desalination Research Facility Membrane Distillation Water

Treatment

Prepared by Zachary Stoll Research Scientist

Brackish Groundwater National Desalination Research Facility

October 30th, 2020

BGNDRF Portable Media Filtration System

SECTION 1 – GENERAL

1.01 PURPOSE

The Brackish Groundwater National Desalination Research Facility (BGNDRF) in Alamogordo, New Mexico (NM) has a need for a portable media filtration system. Per- and poly-fluorinated substances (PFAS) were discovered in two of the four brackish groundwater wells in the beginning of 2019 as part of a probing exercise initiated by the New Mexico Department of Health. PFAS are a class of persistent and toxic compounds used in many consumer and industrial products, and are now ubiquitous in the environment. Although there are no federal regulations on PFAS discharges, many states, such as NM, are imposing their own discharge limits.

At the same time PFAS was discovered at BGNDRF, the facility’s discharge permit was expiring and, the ultimate outcome as determined by the New Mexico Environment Department (NMED), was that the new permit would regulate PFAS discharges to the City of Alamogordo (the City).

Historically, BGNDRF was able to discharge water from the facility to the City as long as it met certain pH and salinity criteria. However, through various discussions with the City and NMED, it was determined that the new discharge permit will only allow discharges to the City with non-detectable levels of PFAS in the water.

The on-site brackish groundwater wells at BGNDRF provide water for research and development only: wells are not used for drinking water. Typically, clients at the facility will use the well water as the feed stream into their technology, treat the water, then recombine their flows and send their effluents to the City. However, with the new discharge regulations, this is no longer allowed if using wells that contain PFAS. This presents a challenge because, although the facility has on-site disposal options via evaporation ponds, the discharges to the ponds will far exceed their capacity.

BGNDRF’s solution to this is to obtain and maintain a portable filtration unit that can be used to pre-treat PFAS (waste) waters prior to a client using it. Once treated, the combined client effluents can be discharged to the City, who has agreed to take these discharges if there is no PFAS present. Our preliminary, longer term pilot testing has demonstrated this is feasible.

In accordance with U.S. Government standards, BGNDRF is soliciting Requests for Proposal (RFP) from qualified Contractors to design and deliver a portable, pilot-scale, media filter treatment unit that can be used to remove PFAS below the detection limit from brackish groundwater at BGNDRF.

BGNDRF’s internal R&D efforts suggest that a portable, point-of-use media filtration system is a time- and cost-effective method for addressing the above challenges and ensuring compliance with the facility’s new discharge permit. Breakthrough curves when using GAC show approximately 6,000 bed volumes until breakthrough and scanning electron microscopy (SEM) coupled with Electron Dispersive X-ray (EDX) have shown that the carbon does not scale under ambient conditions. See Section 4.1. However, it should be noted that carbon exposed to Well 2 water at elevated temperatures (> 140F) for prolonged periods of time (> 1 week) showed crystal grown on the GAC media.

1.02 GOALS

The media filtration system’s performance objectives are listed below:

1. Completely remove total PFAS concentrations below the analytical detection limit. As a rough measure, the detection limit is ~ 5 to 7 parts per trillion (ppt).

2. Treat a minimum flow rate of 10 gallons per minute (gpm) and a maximum of 30 gpm of permeate from a saline water source, such as brackish groundwater.

3. System configuration shall provide redundancy in case of premature breakthrough, such as a lead-lag configuration or something similar.

4. Media provided shall not suffer from chemical scaling (such as scaling from calcium sulfate and/or calcium carbonate) at the operational temperature ranges.

5. Utilize a media that can achieve at least an 7,000 bed volume (BV) treatment lifetime before breakthrough of any individual PFAS compound.

6. Utilize a media that does not alter the TDS of the feed water by more than 2%.

7. Footprint should be less than 6’ x 10’ and no part of the system shall be taller than 12’.

Smaller footprints and heights are favorable.

8. The system shall be portable via forklift or movable by one person. Individual components (for example, a contactor) to be moved with equipment/forklift shall be less than 3,400 lbs, when drained.

9. System shall be on casters so it can be moved easily within the indoor test bay.

10. Media replacement shall be easily accomplished and user friendly, which also minimizes spills of spent GAC.

11. Unit shall come with a minimum of a 1-year warranty for supplies and materials.

12. Materials (non-media) that are used shall be corrosion-resistant and/or appropriately coated.

13. Supporting structures shall be painted blue (exact shade to be pre-approved by

Reclamation).

14. Inlet and Outlet ports shall be male 2” NPT fittings.

15. The system shall not leak or drip water.

1.03 WORK ENVIRONMENT

1.03.1 The unit will be operated inside of the BGNDRF facility test bay area as well as outside in the natural environment. The test bay area is a semi-conditioned space, with temperatures ranging from 60 to 85 F, while the ambient temperature outdoors can range from 10 to 115 F. The floor of the test bay is concrete while the ground outside is packed clay and can be uneven in places.

1.03.2 The unit should be capable of operating with feed water temperatures ranging from 40 F to 90 F.

1.04 SCOPE

The portable media filter unit will primarily be used to remove PFAS from saline brackish groundwater (well water) as a pre-treatment, point-of-use system prior to client use, and shall be used to treat the dead space in the bottom of a storage tank prior to discharging the effluent to the

City. Because the unit will be used for treating well waters with a range of salinities and compositions, as well as indoors and outdoors, the system shall be flexible so that it can accommodate a variety of feed water sources, compositions, and operate in various temperature ranges. The unit provided shall meet all applicable safety standards for electrical, structural, and plumbing components. The Contractor shall provide a fixed cost to perform the following:

1.04.1 Furnish and deliver a new media filtration system to the BGNDRF Facility in Alamogordo, NM. The system shall be portable such that a forklift can move either the entire system, or components of the system, over a variety of terrain outside.

The system shall be designed that allows any qualified entity to readily modify, operate, upgrade, and perform retrofits. The unit shall allow for process configuration modifications meaning that all fitting connections must be standard fittings available in the US.

The system shall be designed for the treatment of saline water with a total dissolved solids (TDS) concentration ranging from 800 mg/L to 6,500 mg/L and treat a flow of 10 to 30 gpm.

The test skid shall be configured to allow movement with a forklift that has a capacity of 3,400 lbs.

A complete system shall be delivered with an operations and maintenance (O&M) manual, which includes (but is not limited to) instructions for normal operation, backwash operation, and removing and replacing spent media. The O&M manual shall also include a list of at least three (3) vendors who can receive the spent PFAS media and comprehensive steps for disposal.

1.04.2 Deliver and commission the unit to Alamogordo, NM and ensure that the equipment is fully operational and provide training to facility staff on operation and routine maintenance.

1.04.3 Provide operating instructions and specification of process components.

1.05 SUBMITTALS

The contractor shall submit the following:

Submittal When Number of

Copies (Electronic)

Provide an updated schedule With Progress Payment Invoices 3

PFAS Removal unit specifications and design plans, shop drawings for unit for Reclamation review and comment

Prior to Start of Construction

Statement of Work To be included with submittal

1.06 PRICE SCHEDULE

Offeror(s) are subject to the terms and conditions of this solicitation.

Price Schedule Item No. Supplies or Services

Quantity and Unit Unit Price Amount

1.

Complete portable, skid-mounted 30 gpm (max flow rate) PFAS removal system (without media) including, but not limited to, all internal/external plumbing, valves, drains, inlet/outlet openings, structural supports, and casters. Pressure rated to appropriate psi. Operational configuration shall provide redundancy. 1.0 Each $ $

2.

Media capable of completely removing PFAS in brackish ground water with high scaling potential. 1.0 Each $ $

3. Packaging, Shipping, and Delivery to BGNDRF 1.0 Lump Sum $ $

4. Installation, startup, training, and shakedown 1.0 Lump Sum

Total for System, Media, Transportation and Startup = $

SECTION 2 – SITE WORK

Minor site work is required that mainly includes start up and/or shakedown to ensure proper functionality of the system.

SECTION 3 – EXECUTION

3.01 PROJECT SCHEDULE

Project shall start within 15 days from issuance of the Notice to Proceed. The contract shall provide a proposed schedule for completion and delivery of the unit within 120 days of issues of the award.

The Scope of Objectives allows for flexibility of the final product or service; however, it is up to the contractor to develop and submit a statement of work (SOW).

There are three components for the period of performance. The first is the design and construction of the PFAS system. The second is the initial startup and shakedown of the system, and the third is a complete O&M manual, which includes detailed instructions for disposal and replacement of spent media.

The completed system is delivered to and operated at BGNDRF, which at 500 LaVelle Road, Alamogordo, NM 88310.

3.02 PROTECTION OF EXISTING EQUIPMENT AND PROPERTY

The contractor is responsible for protecting all existing equipment and property from damage during delivering and commissioning of the unit. The contractor is responsible for any damage.

3.03 SYSTEM TESTING

Contractor shall commission the system on site and ensure that it is operational, produces effluent with non-detect concentrations of PFAS. Ensure that the system can operate safely and train onsite personnel to operate and maintain the system.

3.04 COORDINATION

The contract shall get concurrence from Reclamation on the system design and specifications prior to construction of the unit. The contractor shall notify Reclamation at least 7 days prior to delivery of the system.

3.05 CONTRACTOR USE AREA

Due to COVID-19, BGNDRF has implemented certain protocols to ensure the health and safety of staff and clients. Current protocols in place require a two-week quarantine period before entering the building and require individuals to wear face masks at all times. However, this is a moving target and it is the contractor’s responsibility to get updated information on changes to protocols. During commission of the unit, the contractor will have access to the BGNDRF indoor test bays, outdoor test pads, and restrooms.

SECTION 4 – CONTRACT INFORMATION

4.01 GUIDING RESOURCES

Figure 1: Breakthrough Curves of BGNDRF test columns. Media used was Calgon F400; 10 minute EBCT; 5 m/hr velocity; Q = 165 mL/min.

Figure 2: EDX of Virgin F400 carbon (left) and carbon after heating at 140F for 2 weeks in Well 2 water (right).

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000

[P

FA

S] (C

/C o)

Bed Volumes

PFAS Breakthrough Curve

PFOA (C_IN = 220 ppt) PFOS (C_IN = 21.6 ppt) PFHxS (C_IN = 10 ppt)

Figure 3: SEM images of virgin (left column) and scaled GAC under elevated temperatures (140 F) after two weeks (right column), which shows mineral precipitation.

BGNDRF Wells 2 and 4 Water Chemistry are provided at the end.

4.02 DRAWINGS

The Drawings are FOR OFFICIAL USE ONLY and shall not be used for any reason other than performing the work under this contract.

Well Water Data for the Brackish Groundwater National Desalination Research Facility

General Chemistry Collection Time hour 900 830 830 830 830 1000 900 1156 835 1045 1100 Water Temperature Degrees C 20.1 N 16.6 N 23.8 N 19.3 N 27.0 N 24.4 N 24.3 N 20.8 N 23.6 N 19.10 N 32.20 N Dissolved Oxygen 1 mg/l 8.14 6.67 6.42 N 7.53 N 7.31 N 6.55 N 6.85 N 1.92 N 7.80 N Alkalinity, Bicarbonate (as CaCO3) mg/L CaCO3 246 256 252 243 244 219 228 197 197 176 222 Alkalinity, Carbonate mg/L CaCO3 U U U U U U U U U U U Alkalinity, Hydroxide mg/L CaCO3 U U U U U U U U U U U Total Alkalinity (as CaCO3) mg/L CaCO3 246 256 252 243 244 219 228 197 197 176 222 P-Alkalinity (As CaCO3) mL of titrant mL pH – Aqueous pH units 6.5-8.5 6-9 7.20 7.26 7.17 7.31 7.17 7.19 7.31 7.39 7.60 7.44 7.86 Color Color Units 15 U 10.0 U U 5.00 U 5.00 5.00 U 15.0 C U Conductance, Specific µmhos/cm 5870 6130 6170 6200 6440 6370 6600 5790 4840 4990 6340 Bromide mg/L U 0.722 J U 2.08 0.507 J U 0.906 J 0.633 J 0.476 J 0.348 J U Chloride mg/L 250 250.0 576 494 537 534 521 532 574 527 674 669 627 Cyanide mg/L 0.2 0.2 U U U U U U 0.0102 J U U U U Fluoride mg/L 4.0/2.0 1.6 0.152 J 0.485 U 1.74 U U U 0.169 J 0.643 U 0.121 J Hardness, Total (as CaCO3) mg/L 2380 2560 2620 2530 2550 2460 2470 2470 2600 2230 2430 Langelier Saturation Index SI 0.45 N 0.49 N 0.51 N 0.56 N 0.55 N 0.48 N 0.59 N +0.19 N +0.51 N +0.2 N +0.86 N Nitrogen, Nitrate (as N) mg/L 10 10.0 6.68 7.50 7.82 8.41 8.24 8.41 7.79 5.91 3.69 C 5.73 8.78 Nitrate+Nitrite (as N) mg/L 6.68 7.50 7.82 8.41 8.24 8.41 7.79 5.91 3.69 5.73 8.78 Nitrogen, Nitrite (As N) mg/L 1 U U U U U U U U CU U U Nitrogen, Ammonia mg/L 0.472 U U U U U U U U U 0.702 Perchlorate mg/L NU 0.000118 JN NU 0.000153 JN NU NU 0.000204 JN NU U U U Phosphorus, Orthophosphate (as P) mg/L 0.0360 J U U U U 0.0310 J U U U U U Phosphorus, Total (as P) mg/L 0.0490 J U U 0.0460 J 0.281 0.0770 J 0.0650 J 0.0440 J 0.0490 J 0.0860 J 0.0540 J Solids, Filterable Total Dissolved Solid mg/L 500 1000.0 4950 5680 5490 5470 5850 5910 5760 5160 4030 4220 5600 Sulfate mg/L 250 600.0 3020 3100 3290 3250 3200 2940 3030 2640 1800 1700 2990 Turbidity NTU 1-57

U U CU U U U U 3.10 9.80 4.00 U

Metals and Major Cations Aluminum mg/L 0.05-0.2 5.0 0.0174 J 0.124 0.0108 J U 0.0100 J U U 0.0107 J 0.0138 J U 0.0261 J Arsenic mg/L 0.010 0.1 U U U U U U U U U U U Barium mg/L 2 1.0 0.0108 0.0101 0.0101 0.00939 J 0.00947 J 0.0110 0.0107 0.00982 J 0.00904 J 0.0131 0.0138 Boron mg/L 0.75 0.670 0.786 0.741 0.719 0.698 0.509 0.411 0.740 0.821 0.353 0.644 Cadmium mg/L 0.005 0.01 U U U U U U U U U U U Calcium mg/L 441 471 479 474 501 495 468 480 513 481 490 Chromium mg/L 0.1 0.05 U U U U U U U U U U U Cobalt mg/L 0.05 U U U U U U U U U U U Copper mg/L 1.3/1.0 1.0 0.00995 J 0.0137 0.0134 0.0143 0.00549 J 0.00747 J 0.0116 0.0199 0.0191 0.00480 J U Iron (Dissolved) mg/L 0.3 1.0 U 0.114 0.0693 J 0.130 0.0450 J U U 0.338 0.142 0.0980 J 0.0683 J Iron (Total) mg/L 0.3 1.0 U 0.168 0.0690 J 0.151 0.0880 J 0.0755 J U 0.357 0.0928 J 0.189 0.0711 J Lead mg/L 0.015 0.05 0.000481 J 0.000756 J 0.000986 J 0.000557 J 0.000686 J 0.000601 J 0.000330 J 0.000644 J 0.000719 J U U Magnesium mg/L 310 335 347 326 316 296 315 309 321 250 293 Manganese (Dissolved) mg/L 0.05 0.2 0.00332 J 0.0130 0.0153 0.0129 0.0156 U U 0.0219 0.0143 0.00843 J U Manganese (Total) mg/L 0.05 0.2 0.00379 J 0.0129 0.0157 0.0126 0.0155 U U 0.0272 0.0146 0.00932 J U Mercury mg/L 0.002 0.002 U U U U U U U U U U U Molybdenum mg/L 1.0 U U U U U U U U U U U Nickel mg/L 0.2 U U U U U U U U U U U Potassium mg/L 2.21 2.18 2.25 2.22 2.13 2.38 2.58 2.16 2.35 3.02 2.57 Selenium mg/L 0.05 0.05 0.00483 J 0.00418 J 0.00452 J 0.00534 0.00408 J 0.00473 J 0.00543 0.00235 J 0.00452 J 0.00456 J 0.00338 J Silicon Dioxide mg/L 17.9 N 23.9 N 19.6 N 8.28 N 20.8 N 21.8 N 22.9 N 24.5 N 17.4 N 21.4 N 24.0 CN Silver mg/L 0.1 0.05 U U U U U U U U U U U

19-Jun-17 4-Dec-17 4-Jun-18 3-Dec-18 25-Jun-19 17-Dec-19 29-Jun-20 Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 8-Jun-15 7-Dec-15 27-Jun-16 5-Dec-16

Well-2

19-Jun-17 4-Dec-17 4-Jun-18 3-Dec-18 25-Jun-19 17-Dec-19 29-Jun-20 Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 8-Jun-15 7-Dec-15 27-Jun-16 5-Dec-16

Well-2

Sodium mg/L 617 639 696 660 650 724 776 612 638 464 717 Strontium mg/L 7.97 8.37 8.67 8.83 8.13 7.98 8.41 8.21 7.78 8.69 8.87 Uranium mg/L 0.03 0.03 0.0138 N 0.0154 N 0.0155 N 0.0137 N 0.0141 N 0.0128 N 0.0126 N 0.0127 N 0.0134 N 0.00988 JN 0.0127 N Zinc mg/L 5 10.0 0.0159 0.0194 0.0303 0.0130 0.00775 0.0145 0.00972 0.0336 0.0342 0.0995 0.0475 Radiology Gross Alpha pCi/L 15 59.5 Gross Alpha precision (±) pCi/L 7.23

Radium-226 pCi/L 5 30 (Radium 226 and 228) 0.130

Radium-226 ± pCi/L 0.174

Radium-228 pCi/L 5 30 (Radium 226 and 228) 0.433 J

Radium-228 ± pCi/L 0.403 Organics Organic Carbon, Total mg/L 1.21 1.24 1.48 1.64 1.38 1.29 1.31 1.48 1.26 0.871 J 0.995 J VOCs Benzene µg/L 5 10 U Bromodichloromethane µg/L Bromoform µg/L Bromomethane µg/L Carbon Tetrachloride µg/L 5 10 U Chlorobenzene µg/L 100 Chloroethane µg/L 2-Chloroethyl-vinyl ether µg/L Chloroform µg/L 100 U cis-1,2-DCE µg/L 70 cis-1,3-Dichloropropene µg/L Dibromochloromethane µg/L 1,2-Dichlorobenzene µg/L 600 1,3-Dichlorobenzene µg/L 1,4-Dichlorobenzene µg/L 75 1,1-dichloroethane µg/L 25 U 1,2-dichloroethane (EDC) µg/L 5 10 U 1,1-dichloroethylene (1,1-DCE) 2 µg/L 7 5 U 1,2-Dichloropropane µg/L 5 Ethylbenzene µg/L 700 750 U Methylene Chloride (DCM) µg/L 5 100 U 1,1,2,2-tetrachloroethane µg/L 10 U 1,1,2,2-tetrachloroethylene (PCE) 3 µg/L 20 U Toluene µg/L 1000 750 U Total Xylenes µg/L 10000 620 U trans-1,2-Dichloroethene µg/L 100 trans-1,3-Dichloropropene µg/L 1,1,1-trichloroethane µg/L 200 60 U 1,1,2-trichloroethane µg/L 5 10 U 1,1,2-trichloroethylene (TCE) 4 µg/L 5 100 U Trichlorofluoromethane µg/L Vinyl Chloride µg/L 2 1 U Acrolein µg/L Acrylonitrile µg/L Volatiles Ethylene Dibromide (EDB) 5 µg/L 0.05 0.1 U

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 8-Jun-15 7-Dec-15 27-Jun-16 5-Dec-16

Well-2

Phenolics Phenols, Total Recoverable µg/L 5 NU Parent Acetanilides PAHs: total naphthalene plus monomethylnaphthalenes µg/L 30

1‐Methylnaphthalene µg/L NU 2‐Methylnaphthalene µg/L U

Naphthalene µg/L U Benzo-a-pyrene µg/L 0.2 0.7 U Synthetic Organics Di(2-Ethylhexyl)adipate µg/L 400 Hexachlorocyclopentadiene µg/L 50 Atrazine µg/L 3 U Alachlor µg/L 2 Hexachlorobenzene µg/L 1 Di(2-ethylhexyl)phthalate µg/L 6 Simazine µg/L 4 Pesticides and PCBs 4,4´-DDD µg/L 4,4´-DDE µg/L 4,4´-DDT µg/L Aldrin µg/L alpha-BHC µg/L Polychlorinated biphenyls (PCBs) µg/L 0.5 1 NU

Aroclor 1016 µg/L U Aroclor 1221 µg/L U Aroclor 1232 µg/L U Aroclor 1242 µg/L U Aroclor 1248 µg/L U Aroclor 1254 µg/L U Aroclor 1260 µg/L U beta-BHC µg/L Chlordane µg/L 2 delta-BHC µg/L Dieldrin µg/L Endosulfan I µg/L Endosulfan II µg/L Endosulfan sulfate µg/L Endrin µg/L 2 Endrin aldehyde µg/L Endrin Ketone µg/L gamma-BHC µg/L 0.2 Heptachlor µg/L 0.4 Heptachlor epoxide µg/L 0.2 Methoxychlor µg/L 40 Toxaphene µg/L 3 Pefluorohexanoic Acid (PFHxA) µg/L Perfluoroheptanoic Acid (PFHpA) µg/L Perfluorooctanoic Acid (PFOA) µg/L 0.240 N 0.0410 N 0.210 N Perfluorononanoic Acid (PFNA) µg/L Perfluorodecanoic Acid (PFDA) µg/L Perfluoroundecanoic Acid (PFUnA) µg/L Perfluorododecanoic Acid (PFDoA) µg/L

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 8-Jun-15 7-Dec-15 27-Jun-16 5-Dec-16

Well-2

Perfluorotridecanoic Acid (PFTrDA) µg/L Perfluorotetradecanoic Acid (PFTA) µg/L

Perfluorobutanesulfonic Acid (PFBS) µg/L Perfluorohexanesulfonic Acid (PFHxS) µg/L NU 0.00940 N

Perfluorooctanesulfonic Acid (PFOS) µg/L 0.0160 N 0.00760 N 0.0180 N

N-methyl perfluorooctane-sulfonamidoacetic Acid (NMeFOSAA) µg/L

N-ethyl perfluorooctane-sulfonamidoacetic Acid (NEtFOSAA) µg/L 1,4-dioxane1 µg/L Thallium mg/L U U Radon pCi/L 512 Radon ± pCi/L 17.0

Well Water Data for the Brackish Groundwater National Desalination Research Facility

General Chemistry Collection Time hour 1100 930 930 930 930 1200 900 1141 930 1140 1128 Water Temperature Degrees C 19.7 N 17.1 N 21.8 N 18.9 N 24.8 N 28.7 N 23.8 N 17.6 N 22.7 N 15.10 N 28.70 N Dissolved Oxygen 1 mg/l 7.33 7.06 6.51 N 6.67 N 7.05 N 7.95 N 3.20 N 7.79 N Alkalinity, Bicarbonate (as CaCO3) mg/L CaCO3 212 214 206 198 201 194 205 201 199 193 194 Alkalinity, Carbonate mg/L CaCO3 U U U U U U U U U U U Alkalinity, Hydroxide mg/L CaCO3 U U U U U U U U U U U Total Alkalinity (as CaCO3) mg/L CaCO3 212 214 206 198 201 194 205 201 199 193 194 P-Alkalinity (As CaCO3) mL of titrant mL pH – Aqueous pH units 6.5-8.5 6-9 7.24 7.37 7.22 7.35 7.11 7.07 7.18 7.31 7.90 7.44 7.28 Color Color Units 15 20.0 20.0 20.0 15.0 20.0 75.0 5.00 10.0 10.0 10.0 C 40.0 Conductance, Specific µmhos/cm 4790 4800 4760 4780 4890 4840 4940 4820 4790 5110 4800 Bromide mg/L U 0.639 J U U 0.301 J U U U 0.464 J 0.372 J U Chloride mg/L 250 250.0 664 588 631 653 633 626 666 630 647 673 724 Cyanide mg/L 0.2 0.2 U U U U U U U U U U U Fluoride mg/L 4.0/2.0 1.6 U 0.231 J U U U U U U 0.536 U U Hardness, Total (as CaCO3) mg/L 1880 1950 1930 1920 1960 2060 2030 2020 2180 2120 2040 Langelier Saturation Index SI 0.43 N 0.54 N 0.42 N 0.52 N 0.4 N 0.41 N 0.46 N +0.1 N +0.79 N +0.19 N +0.22 N Nitrogen, Nitrate (as N) mg/L 10 10.0 3.40 3.85 3.58 3.81 3.77 4.09 3.85 3.60 3.29 C 3.55 3.65 Nitrate+Nitrite (as N) mg/L 3.40 3.85 3.58 3.81 3.77 4.09 3.85 3.60 3.29 3.55 3.65 Nitrogen, Nitrite (As N) mg/L 1 U U U U U U U U CU U U Nitrogen, Ammonia mg/L U U U U U U U U U U 0.302 Perchlorate mg/L 0.000203 JN 0.000217 JN 0.000280 JN 0.000286 JN 0.000153 JN 0.000232 JN 0.000432 N NU U U U Phosphorus, Orthophosphate (as P) mg/L U 0.0480 J U U U 0.0460 J U U U U U Phosphorus, Total (as P) mg/L U 0.0810 J U 0.0460 J 0.0590 J U 0.0730 J U 0.0560 J 0.0700 J 0.136 Solids, Filterable Total Dissolved Solid mg/L 500 1000.0 3880 4000 4220 3930 3800 4040 3940 3890 4010 3930 3980 Sulfate mg/L 250 600.0 1930 1850 1890 1860 1850 1720 1910 1730 1790 1720 1830 Turbidity NTU 1-57

6.31 3.40 4.81 C 4.60 5.90 26.0 1.10 8.50 16.0 3.60 32.0 Metals and Major Cations Aluminum mg/L 0.05-0.2 5.0 0.0221 J 0.207 0.0270 J 0.0167 J 0.0109 J 0.0198 J U U 0.383 U 0.151 Arsenic mg/L 0.010 0.1 U U U U U U U U U U U Barium mg/L 2 1.0 0.0120 0.0116 0.0113 0.0115 0.0114 0.0130 0.0114 0.0112 0.0133 0.0130 0.0139 Boron mg/L 0.75 0.275 0.276 0.266 0.216 0.263 0.260 0.222 0.232 0.254 0.263 0.319 Cadmium mg/L 0.005 0.01 U U U U U U U U U U U Calcium mg/L 410 428 420 431 458 488 461 466 502 479 481 Chromium mg/L 0.1 0.05 U U U U 0.00611 0.00217 J U U 0.00451 J U 0.00605 Cobalt mg/L 0.05 U U U U U U U U U U U Copper mg/L 1.3/1.0 1.0 0.0246 0.0117 0.0239 0.0406 0.0477 0.0598 0.0528 0.00656 J 0.0123 0.00231 J U Iron (Dissolved) mg/L 0.3 1.0 0.549 0.544 0.750 1.26 1.08 U U 0.520 2.38 0.622 4.12 Iron (Total) mg/L 0.3 1.0 0.548 0.533 0.732 1.71 1.05 3.08 0.158 0.543 3.37 0.546 4.71 Lead mg/L 0.015 0.05 0.000882 J 0.000407 J 0.000809 J 0.000855 J 0.00144 0.00189 0.00226 U 0.000357 J U U Magnesium mg/L 209 213 214 206 197 204 214 208 224 225 203 Manganese (Dissolved) mg/L 0.05 0.2 0.0193 0.0247 0.0314 0.0149 0.0286 0.0506 0.00560 J 0.00538 J 0.0445 0.0116 0.0730 Manganese (Total) mg/L 0.05 0.2 0.0209 0.0231 0.0307 0.0153 0.0294 0.0525 0.00517 J 0.00549 J 0.0430 0.0111 0.0790 Mercury mg/L 0.002 0.002 U U U U U U U U U U U Molybdenum mg/L 1.0 U U U U U U U U U U U Nickel mg/L 0.2 U U U U 0.00444 J U U U U 0.00414 J U Potassium mg/L 2.35 2.46 2.52 2.54 2.38 2.38 2.56 2.46 2.63 2.47 2.49 Selenium mg/L 0.05 0.05 0.00598 0.00549 0.00530 0.00638 0.00450 J 0.00539 0.00655 0.00403 J 0.00625 0.00611 0.00484 J Silicon Dioxide mg/L 16.2 N 18.8 N 15.5 N 7.28 N 18.2 N 19.0 N 19.2 N 18.7 N 17.1 N 18.1 N 17.3 CN Silver mg/L 0.1 0.05 U U U U U U U U U U U

Well-4

5-Dec-16 19-Jun-178-Jun-15 7-Dec-15 27-Jun-16 25-Jun-19 17-Dec-19 29-Jun-20 Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 4-Dec-17 4-Jun-18 3-Dec-18

Well-4

5-Dec-16 19-Jun-178-Jun-15 7-Dec-15 27-Jun-16 25-Jun-19 17-Dec-19 29-Jun-20 Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 4-Dec-17 4-Jun-18 3-Dec-18

Sodium mg/L 402 417 423 401 387 396 434 423 445 430 410 Strontium mg/L 6.96 6.95 7.09 7.45 6.76 6.68 7.22 7.09 6.75 7.59 7.46 Uranium mg/L 0.03 0.03 0.00754 JN 0.00750 JN 0.00722 JN 0.00662 JN 0.00687 JN 0.00664 JN 0.00695 JN 0.00679 JN 0.00664 JN 0.00649 JN 0.00664 JN Zinc mg/L 5 10.0 0.0300 0.0149 0.0310 0.0282 0.0626 0.0490 0.0624 0.0189 0.0229 0.00516 0.0252 Radiology Gross Alpha pCi/L 15 8.99 Gross Alpha precision (±) pCi/L 8.18

Radium-226 pCi/L 5 30 (Radium 226 and 228) 0.147

Radium-226 ± pCi/L 0.395

Radium-228 pCi/L 5 30 (Radium 226 and 228) 0.469

Radium-228 ± pCi/L 0.691 Organics Organic Carbon, Total mg/L 1.03 0.848 J 1.09 1.26 1.09 1.08 1.25 1.08 0.895 J 1.11 0.752 J VOCs Benzene µg/L 5 10 U Bromodichloromethane µg/L Bromoform µg/L Bromomethane µg/L Carbon Tetrachloride µg/L 5 10 U Chlorobenzene µg/L 100 Chloroethane µg/L 2-Chloroethyl-vinyl ether µg/L Chloroform µg/L 100 U cis-1,2-DCE µg/L 70 cis-1,3-Dichloropropene µg/L Dibromochloromethane µg/L 1,2-Dichlorobenzene µg/L 600 1,3-Dichlorobenzene µg/L 1,4-Dichlorobenzene µg/L 75 1,1-dichloroethane µg/L 25 U 1,2-dichloroethane (EDC) µg/L 5 10 U 1,1-dichloroethylene (1,1-DCE) 2 µg/L 7 5 U 1,2-Dichloropropane µg/L 5 Ethylbenzene µg/L 700 750 U Methylene Chloride (DCM) µg/L 5 100 U 1,1,2,2-tetrachloroethane µg/L 10 U 1,1,2,2-tetrachloroethylene (PCE) 3 µg/L 20 U Toluene µg/L 1000 750 U Total Xylenes µg/L 10000 620 U trans-1,2-Dichloroethene µg/L 100 trans-1,3-Dichloropropene µg/L 1,1,1-trichloroethane µg/L 200 60 U 1,1,2-trichloroethane µg/L 5 10 U 1,1,2-trichloroethylene (TCE) 4 µg/L 5 100 U Trichlorofluoromethane µg/L Vinyl Chloride µg/L 2 1 U Acrolein µg/L Acrylonitrile µg/L Volatiles Ethylene Dibromide (EDB) 5 µg/L 0.05 0.1 U

Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 4-Dec-17 4-Jun-18 3-Dec-18

Phenolics Phenols, Total Recoverable µg/L 5 NU Parent Acetanilides PAHs: total naphthalene plus monomethylnaphthalenes µg/L 30

1‐Methylnaphthalene µg/L NU 2‐Methylnaphthalene µg/L U

Naphthalene µg/L U Benzo-a-pyrene µg/L 0.2 0.7 U Synthetic Organics Di(2-Ethylhexyl)adipate µg/L 400 Hexachlorocyclopentadiene µg/L 50 Atrazine µg/L 3 U Alachlor µg/L 2 Hexachlorobenzene µg/L 1 Di(2-ethylhexyl)phthalate µg/L 6 Simazine µg/L 4 Pesticides and PCBs 4,4´-DDD µg/L 4,4´-DDE µg/L 4,4´-DDT µg/L Aldrin µg/L alpha-BHC µg/L Polychlorinated biphenyls (PCBs) µg/L 0.5 1 NU

Aroclor 1016 µg/L U Aroclor 1221 µg/L U Aroclor 1232 µg/L U Aroclor 1242 µg/L U Aroclor 1248 µg/L U Aroclor 1254 µg/L U Aroclor 1260 µg/L U beta-BHC µg/L Chlordane µg/L 2 delta-BHC µg/L Dieldrin µg/L Endosulfan I µg/L Endosulfan II µg/L Endosulfan sulfate µg/L Endrin µg/L 2 Endrin aldehyde µg/L Endrin Ketone µg/L gamma-BHC µg/L 0.2 Heptachlor µg/L 0.4 Heptachlor epoxide µg/L 0.2 Methoxychlor µg/L 40 Toxaphene µg/L 3 Pefluorohexanoic Acid (PFHxA) µg/L Perfluoroheptanoic Acid (PFHpA) µg/L Perfluorooctanoic Acid (PFOA) µg/L 0.140 N 0.0600 N 0.220 N Perfluorononanoic Acid (PFNA) µg/L Perfluorodecanoic Acid (PFDA) µg/L Perfluoroundecanoic Acid (PFUnA) µg/L Perfluorododecanoic Acid (PFDoA) µg/L

Parameter Name Reporting Units

Human Health

NPDWR/N

SDWR

MCL6

NMAC

20.6.2.3103 8 4-Dec-17 4-Jun-18 3-Dec-18

Perfluorotridecanoic Acid (PFTrDA) µg/L Perfluorotetradecanoic Acid (PFTA) µg/L

Perfluorobutanesulfonic Acid (PFBS) µg/L Perfluorohexanesulfonic Acid (PFHxS) µg/L NU 0.00860 N

Perfluorooctanesulfonic Acid (PFOS) µg/L 0.0150 N 0.00700 N 0.0440 N

N-methyl perfluorooctane-sulfonamidoacetic Acid (NMeFOSAA) µg/L

N-ethyl perfluorooctane-sulfonamidoacetic Acid (NEtFOSAA) µg/L 1,4-dioxane1 µg/L Thallium mg/L U U Radon pCi/L 840 Radon ± pCi/L 19.6