Design Technical Memorandum.pdf

Rev. No. 1/April 1, 2021 1 McMillen Jacobs Associates

8/0Technical Memorandum

Technical Memorandum – No. 01

To: Mark Behrens, AIA. Project: Lahontan National Fish Hatchery Wells No. 4 and Well No 6.

Assessment and Rehabilitation

From: Jerry L. Otto, P.E. cc: File

Prepared by:

Jerry L. Otto, P.E.

Terry Scanlan, P.E., P.G.

Jake Woodbury, P.E.

Mitch Skelton, P.E.

Job No.: 21-007

Date: 04/01/2021

Subject: 35% Design Development for Well No 4 and Well No 6 Rehabilitation

Revision Log

Revision No. Date Revision Description

0 03/01/2021 Draft

1 04/01/2021 Final

Civil

This document was prepared under the supervision of registered Professional Engineers.

Lahontan National Fish Hatchery Well No. 4 and Well No. 6 - 35% Design Technical Memorandum

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1.0 Introduction

1.1 Purpose and Objective

U.S. Fish and Wildlife Service (USFWS) contracted McMillen Jacobs Associates (McMillen) to provide the 35% level design and cost estimate for the rehabilitation of Lahontan National Fish Hatchery’s

(Hatchery) Well No. 6 as well as upgrades to Well No. 4. The purpose of Technical Memorandum (TM)

No. 01 is to document the design process for the 35% level design of the Well No. 4 and Well No. 6

Rehabilitation Project (Project). TM No. 1 presents the Project background, applicable design criteria, a description of each major design component in the concept design, and the 35% level cost estimate.

1.2 Project Background

Lahontan National Fish Hatchery (Hatchery) is located near the town of Gardnerville in Douglas County, Nevada. The Hatchery receives its non-potable water from four groundwater wells (Well 3, 4, 6, and 7) located north of the Hatchery. Figure 1 presents the location of the four Hatchery production wells (potable water and fire suppression wells not shown). Groundwater is conveyed to the Hatchery headworks via two transmission lines (approximate alignment shown in Figure 10). Well No. 6 was originally developed in the 1960’s and is no longer producing at its original design capacity. USFWS is currently in the process of rehabilitating their groundwater wells in order to meet the Hatchery’s future production demand.

As shown in Figure 1, Well No. 4 is located on the west side of Allerman Canal approximately 1-mile north of the Hatchery. Well No. 4 was replaced in March of 2019 by Cascade Drilling. The backup power supply system was not upgraded as part of the Well No. 4 replacement effort. The backup generator consists of a Marathon Magna One 140kW generator with a 250-gallon diesel Con-Vault storage tank. As part of the rehabilitation of Well No. 4, USFWS seeks to replace the backup power supply system including: a new control building, fuel tank, generator, and electrical controls. The control building will serve to protect the electrical components of the backup power supply system as well as key mechanical components (i.e. pump air release valves, check valves, etc.) from the elements.

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Figure 1. Lahontan NFH Groundwater Supply Wells

Well No. 6 is located approximately 0.5-miles northwest of the hatchery in the SE ¼ of the NW ¼ of Section 23, Township 12 North, Range 20 East. The well site is accessed from U.S. Highway 395 north using private gravel roads. The well is located within a 100-foot x 100-foot well easement. Two 30-foot-wide pipeline easements extend from the well easement to the Hatchery.

Lahontan National Fish Hatchery Well No. 6 (Well No. 6) is authorized under water right certificate No.

7364 for “fish hatchery operation and maintenance” (Attachment A). The certificate authorizes a maximum diversion rate of 1.782 cfs (800 gpm) equivalent to an annual volume of up to 1290 acre-feet if pumped continuously for 365 days.

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What we believe to be the original well log for Well 6 indicates an incorrect quarter-section location, but the associated water well record with similar well detail indicated the correct location. The log describes a well drilled to 804 feet and constructed with 704 feet of 16-inch diameter, 0.250-inch wall thickness, well casing. The casing had 0.125-inch factory perforations from 100 to 700 feet with ¼-inch minus gravel filter pack filling the 16-inch by 24-inch borehole annulus. Production was reported to be 2,000 gpm from a depth of 380 feet. Static water level was reported to be 40 feet. Well completion date is September 8, 1965. The well log, well record, pump curve, and testing data for Well 6 are provided in Attachment B.

In 2017, Well 6 began producing large amounts of sand. A video survey was performed showing 16-inch casing partially collapsed at 455 feet. The 16-inch casing was subsequently swaged out and a 5-foot patch was installed from 452.9 to 457.9 feet. After repairing the 16-inch casing, a 12-inch by 0.250-inch wall liner casing was installed from surface to 700 feet. The 12-inch liner was perforated (factory quad row mill 0.080-inch slot) from 140 to 700 feet with 1/8 to 1/4-inch gravel filter pack filling the 16-inch by 12-inch annulus from 102 to 700 feet and a seal placed in the annulus from 102 feet to the surface. There was no test pumping recorded before or after the well repair performed in 2017.

Well 6 has three documented test pumping events used in this evaluation, including the initial test pumping performed in September 1965, a May 2010 test, and a November 2019 test. Tables of the test pumping data for Well 6 are provided in Attachment A.

The November 2019 test was performed at 650 gpm to match the flow of the 2010 test. The plumbing configuration did not allow the use of a portable flow meter. To obtain the approximate flow rate during the test, and to keep the flow rate constant, the discharge valve was used to keep total dynamic head at approximately 385 feet, which is approximately 650 gpm on the pump curve. The pump ran smooth and quiet with minor vibration. Upon start up, the well initially produced a mixture of sand (~20%) and encrustation (~80%) at approximate concentration 250 ppm. After ten minutes of pumping, the sand production decreased to minor amounts. A small amount of air was observed in the water after 30 minutes of pumping and continued throughout the test. The water quality field parameters taken during the test stabilized at a temperature of 13°C, a conductivity of 221 µS/cm, and a pH of 7.82 standard units.

A semi-logarithmic plot comparing the water level drawdown versus the logarithmic time in minutes of the tests is presented below as Figure 2.

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Figure 2. Well 6 Pump Tests Comparison Plot

The 2019 test shows Well No. 6 was performing similar to the unlined Well No. 6 tested in 2010. Both of those tests show the well is less productive than when initially constructed in 1965. This decrease in production could be caused by both a decrease in aquifer water level and encrusted perforations. It is improbable that a well rehabilitation effort at this time would increase the production of the well since the specific capacity is similar to that tested in 2010 after acidification. Also, the installation of the 12-inch liner in 2017 makes it more difficult to remove encrustation that may be plugging the perforations in the original 16-inch casing.

After the well rehabilitation in 2017, a new Goulds 9WAHC, 3 stage, 6.6875-inch trim submersible pump with 100-hp motor was installed on 520 feet of 6-inch pump column. A pump curve provided by Carson Pump is included in Appendix B. Electrical service to the pump is 3-phase 480V overhead power provided by NV Energy. Backup power is provided by a Cummins Onan 175 kW diesel generator. The generator, transfer switch, and electrical panels are located in a wood framed control building along with communication equipment. Fuel storage for the backup generator consists of a 250-gallon capacity concrete encased steel tank by Con-Vault. The external fuel tank is set on a concrete slab adjacent to the control building.

In order to meet USFWS’s desired 900-gpm production rate, it is recommended that Well No. 6 be replaced. Likewise, due to the age of the existing backup power supply system, it is recommended that the backup generator and associated electrical componentry be replaced. A new control building will also be required to meet generator and electrical equipment space requirements. It is also recommended that the

Rev. No. 1/April 1, 2021 6 McMillen Jacobs Associates generator fuel supply be upsized to a 500-gallon diesel storage tank to extend the backup power supply system run time.

2.0 Design Criteria

The following sections present a description of the proposed rehabilitation components and associated design criteria.

2.1 Control Building

Both Well No. 4 and Well No. 6 upgrades will have a new Control Buildings constructed to secure and protect mechanical and electrical equipment.

Each new control building will be a pre-engineered metal building (PEMB) set on a concrete foundation.

A PEMB structure is recommended over alternative building types due to the overall value (quality per cost), long-term performance, and advantages in the speed and ease of installation. The PEMB structure is manufactured with a customized design with respect the environmental loads at the building location.

The control building inside dimensions are based on electrical equipment dimensions and the

Occupational Safety and Health Administration’s (OSHA) spacing requirements.

The PEMB design will meet the following criteria and standards:

• American Institute of Steel Construction (AISC) o Specifications for the Design, Fabrication and Erection of Structural Steel Buildings o Specifications for the Design of Cold Formed Steel Structural members

• International Building Code 2018 (Adopted by Douglas County)

• American Society of Civil Engineers Minimum Design Loads and Associated Criteria for

Buildings and Other Structures (ASCE 7-16) o Risk Category: I o Soil Class: D (Code minimum for standard conditions) o Soil Bearing: 1,500 PSF maximum o Site Elevation: 4,874 ft (Well 4), 4,875 ft (Well 6); North American Vertical Datum of

1988 [NAVD 88])

o Seismic Zone: IBC = D/IRC = D2 & E for some site-specific areas o Wind Speed (Risk Category I): Minimum 110 MPH V ultimate – Exposure C o Snow Load: 40 PSF Ground snow load, with 31.0 PSF Roof snow load minimum

(Douglas County) o Frost Depth: 18-inches minimum (Douglas County)

• NFPA 101 Life Safety Code – Chapter 40 Industrial Occupancies

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2.2 Well 6 Target Well Yield

A minimum target yield of 900 gpm is desired for the Well 6 replacement. Operation of Well 6 for over

50-years has shown that aquifer conditions are unlikely to support sustained yields greater than or equal to the 900 gpm water right rate, but short-term yields of greater than 900 gpm might be possible. Drilling

Well No. 6 to a deeper depth might intersect additional water-bearing zones that might result in a sustainable yield of 900 gpm. If a yield of 900 gpm or more can be developed, the Hatchery water rights might be modified to allow for the higher production rate at Well 6.

2.3 Well Site

The Well 6 replacement will be located approximately 50 feet to the east of the existing well within the

100-foot x 100-foot well easement. Placement of the replacement well closer to the existing well is not advisable due to the potential for encountering voids, lost circulation zones, or well abandonment materials during the drilling process. These conditions can impact borehole stability during the drilling process and ultimately result in reduced well yield. In addition, pumping of Well 6 must be stopped during drilling and construction of the replacement well. The proposed location, relative to existing Well

6 is shown on Figure 3.

The well shall be designed to meet the following requirements:

• Chapter 534 of the Nevada Administrative Code (NAC);

• Nevada Division of Water Resources (NDWR) standards;

• Nevada Division of Environmental Protection (NDEP); and,

• Applicable American Water Works Association (AWWA) requirements.

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Figure 3. Proposed Location - Well 6 Replacement

2.4 Well Pump

For conceptual design purposes, the replacement well capacity is assumed to be 900 gpm at 450 feet TDH which will allow for a pumping water level of 325 feet and a discharge pressure of 50 psi. A 125-hp motor will be required. If pumping water levels are higher, or discharge pressures are lower, this pump will produce at higher rates. USFWS staff have indicated a preference for a vertical turbine pump in the completed well. Actual pump capacity will be determined based on the results of test pumping of the replacement well.

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2.5 Electrical Design

The primary electrical design components for both Well No. 4 and Well No. 6 include: a new electrical service connection, backup generator, transfer switch, variable frequency drive (VFD), and new SCADA control panel and communication equipment. The new electrical service connection and backup generator are sized based on the power requirements for the pumps, using 75 hp for the existing Well No. 4 pump and an assumed 125 hp for the new Well No. 6 pump. As stated above, the actual pump capacity and size for Well No. 6 is dependent upon final well productivity. As such, the electrical service connection and backup generator specifications may also change if the motor size changes. For the purpose of the conceptual level design and cost estimating, the assumption of 125 hp is reasonable. The electrical design for Wells No. 4 and 6 will meet the applicable codes of the following reference standards associations:

• National Electrical Contractors Association (NECA)

• National Electrical Manufacturers Association (NEMA)

• National Fire Protection Association (NFPA)

• Occupational Safety and Health Standards (OSHA)

3.0 Design

3.1 Site Plan

As shown in the 35% design drawings the Well No. 4 civil site plan extends the fenced perimeter to accommodate the new control building and fuel tank. The new perimeter fencing will include double leaf gates on the east and west sides of the site to allow for vehicle access. An additional pedestrian gate will be installed on the east perimeter fence. Site grading will be limited to leveling ground for the new PEMB control building and leveling ground disturbed by construction activities. The new PEMB control building finished floor will be set at elevation 4877.2 feet and located on the south side of the existing well head. A 10-foot-wide driveway and turn around will be installed between the two double leaf gates.

The driveway will consist of a 6-inch layer of ¾”-minus crushed rock.

As shown in the 35% design drawings the Well No. 6 civil site plan, the replacement well has been relocated approximately 60 feet east of the existing well. The new 18’-0” long by 17’-6” PEMB will be set at elevation 4879.2 ft on the west side of the proposed well location. The Well No. 6 right-of-way is located within the 100-year floodplain (elevation 4876.1 ft). The existing ground is approximately 3 feet higher than the 100-year recurrence interval flood level per Federal Emergency Management Agency

(FEMA) flood insurance study (FIS) No. 32005CV000B for Douglas County (FEMA, 2016). Due to the site being located within the 100-year floodplain, any fill such as pipe bedding, structural fill, or aggregate top course will need to be balanced with cut material to result in no net increase in imported fill. The contractor should be made aware that any net increase in imported material would result in additional permitting.

Finished grading of the Well 6 site will be limited to leveling disturbed ground to catch existing. Based on photos of the site, the existing surface material may be suitable for use in the driveway. The contractor

Rev. No. 1/April 1, 2021 10 McMillen Jacobs Associates shall field verify if the existing surface material will provide a well compacted drainable surface with limited fines and organic material.

3.2 Control Buildings

As shown in the 35% design drawings, the concept Well No. 4 PEMB control building is approximately

20’-0” wide by 12’-0” long by 10’-0” tall (eave height). The floor plan dimensions are based on providing adequate spacing for the backup generator, electrical and communications equipment, and overhead clearance for the backup generator exhaust. The building will include a metal double leaf door measuring

6’ wide by 8’ tall and single personnel access door. The double leaf door is required for installation of the backup generator. The building will be fitted with a mechanical louver for the backup generator air intake.

Both walls and roof will be uninsulated. The building will be located adjacent to the proposed well head location. The well head will be partially to fully enclosed by either a structural extension of the control building or a separate shed in order to protect the pump and mechanical equipment from the elements. An additional shed-like structure will be installed over the new pressure reduction valve located on the discharge piping in the southeast corner of the Well No. 4 site. The shed will be designed by others.

The concept Well No. 6 control building also consist of a PEMB measuring approximately 18’-0” wide by 17’-6” long by 10’-0” (eave height). In addition to a larger overall structure, the Well No. 6 control building will have 2’-0” tall by 0’-6” wide concrete stem walls. The purpose of the stem walls are to insure the building is structurally sound in the event that a flood event greater than the 100-year recurrence interval flood occurs.

Additional building features including: PEMB colors, lighting, interior finish, roof overhang, gutters, heaters, external power receptacles, windows, etc., will be confirmed and/or defined in future design efforts.

3.3 Well 6 Design

USFWS staff have requested that Well No. 6 be of similar design to the recently completed replacements of Wells 3 and 4 with a minimum depth of 800 feet. Well No. 4R was completed with 16-inch casing and

Well 3R was completed with 12-inch casing. In discussion with USFWS, a 14-inch casing has been selected to allow for installation of a well pump capable of yields in excess of 1000 gpm (125% of existing water right) in the event that Well 6 is more productive than anticipated.

Specifically, the Well No 6 replacement will include the following components.

• Conductor casing excavated or drilled through fill materials to a maximum depth of 20 feet.

• 24-inch diameter conductor casing sealed to 100 feet.

• Pilot borehole drilled to 1000 feet

• 23-inch borehole to a minimum of 800 feet

• 14-inch OD, 5/16-inch (0.3125-inch) wall thickness, high strength low alloy (HSLA) well casing and HSLA “Ful Flo” louvered well screen from +2 to a minimum of 800 feet. Well screens will be placed opposite water-bearing zones determined from drill cuttings and geophysical logging.

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Approximately 500 feet of well screen is contemplated. Well screens will begin at approximately

120 feet.

• SRI No. 6 gravel pack from 50 to a minimum of 800 feet.

• Sanitary seal from 50 feet to ground surface.

The 14-inch ID well casing has adequate diameter to fit a 1200-gpm vertical turbine pump (approximately

11-inch diameter), 8-inch column pipe, and 1.25-inch water level sounding tubes. If the actual yield from the well is less than 800-gpm, a smaller pump can be accommodated. If well yield is greater than 800-gpm, a larger pump (12-inch diameter, up to 1,500 gpm or more) can likewise be accommodated. The well depth will be 800 to 1000 feet. Well depth will be determined following pilot hole drilling, with final well depth determined based on the depth of the deepest water-bearing zone between 800 and 1000 feet.

Well construction will begin with the drilling of a pilot borehole to a depth of 1000 feet. Following pilot borehole drilling, and review of drill cuttings and geophysical logs, a final well design will be developed within 48 hours. To avoid construction delays and standby costs, adequate casing and screen for a well depth of 800 feet should be pre-ordered, with additional casing and screen, if needed, ordered and delivered while reaming of the pilot borehole.

Draft specifications for construction of Well No. 6 are provided as Attachment C. The specifications include abandonment of the existing well. A conceptual well design is shown in Figure 3. All pumping from Well No. 6 for Hatchery Supply should be suspended during the drilling and construction of Well

No. 6.

3.4 Pump Design

A water-lubricated vertical turbine pump is proposed. For conceptual design purposes, an 8-stage Goulds

11CMC with 7.9-inch trim will produce 900 gpm with a TDH of 450 feet and a power requirement of approximately 124 horsepower and 1000 gpm with a TDH of 400 feet and a power requirement of approximately 126 horsepower. Assumed setting depth will be 500 feet. Column pipe will be 8-inch diameter. Column and discharge head losses at 900 gpm will be approximately 15 feet. Two water-level sounding tubes (1.25-inch) will be provided.

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Figure 3. Conceptual Well Design – Well No. 6

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3.5 Mechanical Piping

As shown in the 35% design drawings, an 8-inch diameter pressure reducing valve will be installed on the existing Well No. 4 discharge pipe just upstream of the blow-off valve. The pressure reducing valve serves to protect the Well No. 4 transmission line from failure if the line were to experience a spike in pressure. No additional changes will be made to Well No. 4 mechanical componentry.

Well No. 6 mechanical discharge piping shall be 10-inch diameter and shall include a 2-inch air and vacuum relief valve, 10-inch check valve, 10-inch magnetic flow meter, 8-inch flush-to-waste valve and piping, 8-inch pressure relief valve, 1-inch air release valve, and 8-inch isolation valve. A mechanical piping schematic is provided as Figure 4. Based on the As-Builts, survey, and site investigations, the exact location and depth of the existing Well No. 6 transmission line is unknown. As noted in the 35% drawings, the Contractor shall expose the existing transmission line and identify the preferred tie-in location for the new transmission line piping. The Contractor shall notify the COR and receive the COR’s approval of the transmission line tie-in location prior to installation.

Figure 4. Well No. 6 Conceptual Mechanical Piping Schematic

The contractor shall coordinate with USFWS on any and all shutdowns (temporary or long-term) of Well

No. 4 or Well No. 6 required for the completion of the work. Well No. 6 must be shut down during the development of the replacement well.

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3.6 Electrical Design

The electrical rehabilitation design approach for both wells is similar, with the primary difference being the size of the new 125-hp pump at Well No. 6 requiring larger distribution equipment, backup power equipment, and conductors compared to the existing 75-hp pump at Well No. 4. The design accommodates reusing the existing electrical services at each site if sufficient capacity is available. Based on existing facility loads, no new service is anticipated to be necessary to accommodate the new facility loads. Preliminarily calculations require that the service be at least 150 kVA for the continuous facility full load amps (FLA) at 480V, three-phase at both sites.

At Well No. 4, both the existing well and an existing irrigation pump are served by an overhead 480V service spanning multiple poles before reaching the well site. It is anticipated that the bidding contractors will investigate this overhead service pre-bid for suitably for reuse with the new facility. If the existing overhead is not sufficient, the Contractor will need to replace it. The existing 50-hp irrigation pump located across the east bridge is assumed to be on the same service transformer as the existing well pump and control building. It is known to be metered separately, and it is assumed that backup power is not required for this pump. Design calculations assume that this pump can run continuously and simultaneously with the well pump and facility loads.

Using conventional across-the-line starting methods, the starting current for these well pumps would be approximately 7 times the FLA, which would increase the service size to over 400 kVA due to system voltage drop on motor start. Because of this, the recommended design will use a VFD for each well pump motor, which allows control of the starting current and the speed of the pumps. Using VFDs, the starting currents can be limited to the same value as the FLA. The VFDs will utilize electronic protection of the motor and power circuit, and the VFD control panels will have a digital power meter mounted on their doors with remote monitoring capability. Due to harmonics that the VFDs will generate on the line side, at a minimum a passive line reactor filter will need to be installed with the VFDs to reduce harmonics to

IEEE 519 distortion limits. See Appendix D for harmonic calculations of each system with the passive line filter. To match existing drives used at the fish hatchery, the design will use ABB Ultra Low

Harmonic drives that are equipped with active filtering equipment that exceeds IEEE 519 specifications for harmonic reduction. The drives will also be specified with load-side reactors to mitigate the effects of reflected wave voltage spikes on the motor and cable insulation. The drives and their components will be housed in an indoor, dust-tight enclosure with appropriate heating and ventilation equipment located inside the respective control buildings.

The system will include a diesel-engine standby generator set to provide power to the pump during outages. The generator was sized using assumed loads and Kohler’s generator sizing software. Using a

VFD for the well pumps, the software output a minimum size of 80 kW for Well No. 4 and 150 kW for

Well No. 6. See Appendix D for the generator sizing report. Each generator will be installed in the respective well control building, and will be equipped with the following electrical components, at a minimum: main circuit breaker, manufacturer’s standard control panel, block heater, battery heater, and battery charger, with all auxiliary components fed from the 208V panel.

Per USFWS request, the diesel fuel storage tank will be upsized to a 500-gallon capacity tank. The replacement tank is assumed to be a Con-Vault concrete lined steel tank set on a concrete pad (same as

Rev. No. 1/April 1, 2021 15 McMillen Jacobs Associates existing). Considering a 500-gallon storage tank and a backup generator with fuel consumption rates of

6.9 and 11.7 gallons-per-hour for the 80 kW and 150 kW generators at 100% load, respectively, a conservative estimate of the generator runtime, without refueling, is just over 72 hours for Well No. 4 and

42 hours for Well No. 6. USFWS will need to determine if this is adequate based on hatchery operations, staffing, and refueling time requirements.

The electrical distribution system will consist of a meter and service disconnect, a 480V panel, a 208V panel, a low-voltage transformer, and a transfer switch for the generator. Lights and receptacles will be provided for the building with standard switching and electrical materials. All raceway and conductors will be sized according to NFPA 70: National Electrical Code (NEC). The electrical installation will be tested to International Electrical Testing Association (NETA) standards, where applicable. Due to the control building being uninsulated and without HVAC, electrical equipment will be a minimum of

NEMA 250 type 12, with heating and ventilation added to keep internal components at an operating temperature between 40 and 104 degrees F. The Contractor will need to develop the design to ensure all components are maintained within acceptable operating conditions.

LED light fixtures will be provided in and around the control buildings, with switched fixtures on the interior and a photocell-controlled fixture above each exterior door frame. Battery backup will be provided in the exterior fixtures to provide emergency egress lighting. Interior fixtures will provide between 40 and 50 foot-candles at 2-1/2 feet above the floor. Convenience receptacles will be provided inside the building, inside the pump enclosure, and on the building exterior.

The installation will use industry-standard grounding practices that will meet NEC requirements. All metal surfaces will be grounded. Each power and control circuit will include a dedicated grounding conductor. Signal circuits will be twisted and shielded to protect them from electromagnetic interference

(EMI) per standard practice. The VFD power circuits will use shielded VFD cable to protect equipment in the vicinity from nuisance electrical phenomena that often occur on the line and load sides of VFDs.

Communication and signal circuits connecting to the VFD panels, such as the Ethernet cable, will also be shielded to further mitigate this common nuisance.

To match anticipated additions to the Well No. 3 site, heat trace will be added to all new and existing pressure relief valves and air release valves. This is assumed to keep the valves from freezing and not allowing normal operation. Heat trace will be self-regulating, low temperature type, preliminarily expected to be sized to maintain a pipe temperature of 40 degrees F. All heat trace will be fed from the new 208V panels.

3.7 Controls and Communication Design

The existing supervisory control and data acquisition (SCADA) control panels for each site shall be replaced with new SCADA control panels to provide monitoring, control, alarm reporting, and communication for new equipment at each well facility. New equipment and functionality will be identical to that being provided at Well No. 3. This will include an Allen Bradley programmable logic controller (PLC) and required analog and discrete input/output (I/O) cards, operator interface terminal

(OIT) accessible by remote mobile device, uninterruptible power supply (UPS) for power outage ride-over, industrial managed Ethernet switch, cellular-based SCADA link and antenna, 24V power supply, Rev. No. 1/April 1, 2021 16 McMillen Jacobs Associates surge protection, and all wiring, duct, terminations, terminal blocks, relays, grounding, and fuses required for a complete and operable system. The PLCs in each SCADA system will include at least 25% of spare

I/O capacity for both discrete and analog signals. A convenience outlet will be provided in each SCADA control panel.

The SCADA control panels will have password-protected, programmable setpoints for control items through the OIT based on monitoring, alarm, and communication requirements (as determined by

USFWS). At a minimum, these setpoints will include pump start/stop and speed modulation for pressure and flow.

The standby generators at each facility will be calibrated to provide backup power to the whole facility within 60 seconds of loss of utility power, which will provide at least 24 hours of backup to the SCADA control panels (see above section for estimated generator runtimes). The UPS in each control panel will provide backup to the control system during the ride-over period between utility outage and backup power. It is assumed that this meets USFWS requirements for control system backup.

Standard communication protocol at each facility will be Ethernet/IP transmitted over Category-6 cable.

This includes connections to the generator, ATS, and VFD for monitoring, alarm, and control from

SCADA. The cellular antenna and associated equipment are assumed to use a proprietary cable for communication with SCADA.

The SCADA panels will receive signals from instrumentation around the facility as well, including a

Government-provided magnetic flowmeter (new at Well No. 6, existing at Well No. 4), two level sensors in each pump well, level sensing for the diesel tank, a pump pre-lube solenoid valve, and intrusion switches at each door. The existing transceivers and antennas will be replaced with new cellular antenna equipment to provide remote monitoring and control capabilities for each site. At the option of USFWS, the existing SCADA control panels and communications equipment can be salvaged to USFWS for use elsewhere.

4.0 Cost Estimate

A class 3 cost estimate for the 35% level design was prepared for budgetary purposes. The estimated cost for rehabilitation of Well No. 4 is $509,000 with a +/- 30% accuracy range ($356,000 - $662,000). The estimated cost for rehabilitation of Well No. 6 is 2,052,000 with a +/- 30% accuracy range ($1,436,000 -

$2,668,000). The cost estimate is presented in 2021 dollars and includes mobilization, overhead and profit, bond rate, contingency, and sales tax. The project total cost estimate was rounded to the nearest

$1,000. Any significant changes to the concept design or assumptions presented in TM No. 1 and the 35% design drawings will alter the accuracy of the cost estimate.

Unit costs for development of Well No. 6 are based on Well No. 4 and Well No. 3 final negotiated bid prices (February 5, 2019 and December 30, 2020, respectively) Note that Well No. 4 bid prices include markups. Final costs including markups are shown in the attached cost estimate.

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The costs of the backup generators and associated electrical equipment were conservatively estimated based on an assumed 125-hp pump motor for Well No. 6. Although the final pump size will not be determined until the replacement well has been tested, any changes to the final pump and backup power design are more likely to result in a cost savings rather than a cost increase. Electrical costs assumed installation of a new SCADA panel, however, the existing panel may be salvaged per USFWS request

(cost of salvaged SCADA panel not reflected in attached pricing).

The costs of the PEMB and fuel storage tank were also based on Well No. 3 replacement bid pricing.

Earthwork, mechanical components, exterior improvements, concrete placement, demolition, and erosion and sediment control measures were based on standard unit costs.

5.0 Conclusion

USFWS seeks to upgrade the backup power supply system and controls for the Well No. 4 replacement well. Based on discussions with USFWS and evaluation of the existing system, the proposed upgrades to

Well No. 4 includes the following key features:

• A 75-hp VFD control panel, with kilowatt-hour meter, line filtering, and indoor enclosure;

• A PEMB Control Building;

• A new 150 kVA, 480V, 3-phase service connection, if required for loading;

• An 80-kW backup generator and transfer switch;

• A new 8-inch pressure reducing valve and protective covering (shed);

• A 500-gallon Con-Vault fuel storage tank; and,

• New SCADA and communication equipment;

Assessment of the existing well site by SPF and McMillen found that the Well No. 6 is not capable of meeting the existing and future demands of Lahontan NFH. In order to provide the Hatchery with a reliable well that meets Hatchery needs, development of a new well and installation of a new backup power system is recommended. The proposed 35% rehabilitation design for Well No. 6 includes the following key features:

• State of Nevada Permitting Requirements such as Well drilling and discharge permits.

• A new 900-foot-deep (assumed) well with a target production rate of 900 gpm. The replacement well will be located 50 feet east of the existing well;

• A 125-hp, 8-stage, Goulds 11CMC vertical turbine pump with a TDH of 450 feet at 900 gpm;

• A 125-hp VFD control panel, with kilowatt-hour meter, line filtering, and indoor enclosure;

• A PEMB Control Building;

• A new 150 kVA, 480V, 3-phase service connection, if required for loading;

Rev. No. 1/April 1, 2021 18 McMillen Jacobs Associates

• A 150-kW backup generator and transfer switch;

• A 500-gallon Con-Vault fuel storage tank;

• New SCADA and communication equipment;

• New 8-inch and 10-inch ductile iron piping, valves, meters, and tie-in to the existing watermain;

and,

• Abandonment of the existing well

A class 3 cost estimate was developed for the Well No. 4 and Well No. 6 Rehabilitation Project. The estimated cost for rehabilitation of Well No. 4 is $506,000 with a +/- 30% accuracy range ($354,000 -

$658,000). The Well No. 6 replacement has a total cost of 2,046,000 with a +/- 30% accuracy range

($1,432,000 - $2,660,000. The 35% draft cost estimate and draft design drawings are submitted as attachments to TM No. 1.

6.0 Appendices and Attachments

Appendix A – Well 6 Water Rights Documents

Appendix B – Well 6 Data

Appendix C – Draft Well Specifications

Appendix D – Electrical Calculations

Appendix E – Technical Specifications List

The following attachments are submitted with TM No. 1:

• Lahontan Well No. 4 and Well No. 6 – 35% Cost Estimate.pdf

• Lahontan Well No. 4 and Well No. 6 – 35% Design Drawings.pdf

7.0 References

Federal Emergency Management Agency (FEMA), Jun 15, 2016. Flood Insurance Study. Douglas

County, Nevada, and Incorporated Areas. Flood Insurance Study Number 32005CV000B.

Lahontan National Fish Hatchery Appendices

Rev. No. 2/April 1, 2021 McMillen Jacobs Associates

Appendix A

Attachment A Water Right Documents fwsnum divnum station priority appln no. per. no. cert no. claim no. source purpose rate (cfs) vol (AF) acressite name twp. rng. sec.

LAHONTAN NFH 11/20/1963 21650 7472 UNDERGROUND S FISH 1591 WELL NO. 2 72412N 20E 23

LAHONTAN NFH 11/20/1963 21651 7473 UNDERGROUND S FISH 0.05592 WELL NO. 1 3612N 20E 23

LAHONTAN NFH 6/22/1964 22065 7338 UNDERGROUND S FISH 1.147593 WELL NO. 3 828.5512N 20E 23

LAHONTAN NFH 2/22/1965 22448 7328 UNDERGROUND S FISH 3.966595 WELL NO. 4 2871.212N 30E 14

LAHONTAN NFH 7/29/1969 25180 7364 UNDERGROUND S FISH 1.782596 WELL NO. 6 129012N 20E 23

LAHONTAN NFH 2/22/1965 57986 57986 14547 UNDERGROUND (W FISH 1.961598 WELL NO. 7 828.72812N 20E 23

Friday, January 29, 2021 Page 1 of 1orgcode input report Verified: 2/7/2013

Lahontan National Fish Hatchery Appendices

Rev. No. 1/April 1, 2021 20 McMillen Jacobs Associates

Appendix B

Attachment B Well 6 Data

Company: CARSON PUMP

Name: DAN

Date: 5/23/2017

Pump:

Size: 9WAHC (3 stage)

Type: Submersible Synch speed: 3600 rpm

Curve: E6209WAPCO

Specific Speeds:

Dimensions:

Vertical Turbine:

Pump Limits:

Temperature:

Pressure: -- Sphere size: 0.4 7 in

Pum Data Sheet - Submersible 60 Hz

SUB PUMP END550 GPM @ 450' TDH GOULDS

Speed: 3450 rpm Dia: 6.6875 in

Impeller:

Ns: 1600 Nss: -

Suction: -- Discharge: ---

Bowl size: 9.25 in Max lateral: 0.56 in Thrust K factor: 3.75 lb/ft

Power: -- Eye area: ---

Search Criteria:

Flow: 550 US gpm

Fluid:

Water

SG: 1

Viscosity: 1.1 05 cP

NPSHa: ---

Motor:

WATER TECHNOLOGY

a xylem brand

Head: 450ft

Temperature: 60 "F Vapor pressure: 0.2563 psi a Atm pressure: 14.7 psi a

Standard: NEMA Size: 100 hp Enclosure: SUB Speed: 3600

Frame: 8 inch Sizing criteria: Max Power on Design Curve

Flow:

Head:

Eff:

Power:

NPSHr:

---- Data Point ----

550 USgpm

460ft

80.8%

79 hp

19.4 ft

---- Design Curve ----

Shutoff head: 598 ft

Shutoff dP: 259 psi

Min flow: 122 US gpm

BEP: 81.7%@ 490 US gpm

NOL power:

84.3 hp @ 700 US gpm

-- Max Curve -

Max power:

84.3 hp @ 700 US gpm

"C ctl Q)

J:

J:

CJ)

a..

z a.

..c:

I a..

6.6BJ6 in

5.75 in

0 100 200

100 200

0 100 200

US gpm

600 700

600 700

600 700

Discharge Sizes-5",6",8". Curves are certified for water at 60"F only. Consult factory for performance with any other fluid.

Note: Contains unofficial Goulds Water Technology catalog content, not to be used for production .

Performance Evaluation:

Flow Speed Head Efficiency Power NPSHr USgpm rpm ft % hp ft

660 3450 374 74.8 83.3 24.8

550 3450 460 80.8 79 19.4

440 3450 523 81.1 71.5 15

330 3450 563 76.1 61.7 11.4

220 3450 584 63.3 51.2 10.3

Selected from catalog: goulds sub.60 Vers: 3.65

Date Time t

(min)

DTW

(ft btoc)

DTW

(ft bgs)

DD

Pressure

(psi)

TDH (need to be 385 feet)

Q (gpm) Specific

Capacity

Sand

(ml/5 gal) Remarks

11/14/19 11:14 68.22 67.92

11/14/19 13:00 0 68.20 67.90 0.00 78.20 11/14/19 13:02 3 110.15 109.85 41.95 100.00 351.15 11/14/19 13:04 4 115.55 115.25 47.35 104.00 365.79 5.00 11/14/19 13:06 6 119.80 119.50 51.60 104.00 370.04 11/14/19 13:08 8 124.10 123.80 55.90 104.00 374.34 1.00 11/14/19 13:10 10 127.00 126.70 58.80 103.00 374.93 11/14/19 13:12 12 130.11 129.81 61.91 102.00 375.73 11/14/19 13:14 14 131.75 131.45 63.55 102.00 377.37 11/14/19 13:16 17 134.10 133.80 65.90 102.00 379.72 11/14/19 13:18 18 135.30 135.00 67.10 101.50 379.77 11/14/19 13:20 20 137.05 136.75 68.85 101.50 381.52 11/14/19 13:24 24 139.54 139.24 71.34 101.50 384.01 650 9.11 <1 11/14/19 13:30 30 142.90 142.60 74.70 101.00 386.21 650 8.70 <0.25 11/14/19 13:35 35 145.34 145.04 77.14 100.50 387.50 650 8.43 11/14/19 13:41 41 147.95 147.65 79.75 100.00 388.95 650 8.15 11/14/19 13:50 50 150.30 150.00 82.10 104.00 400.54 650 7.92

11/14/19 13:52 52 151.50 151.20 83.30 100.00 392.50 650 7.80

11/14/19 13:57 57 153.41 153.11 85.21 100.00 394.41 650 7.63

11/14/19 13:59 59 154.40 154.10 86.20 98.00 390.78 650 7.54

11/14/19 14:02 62 155.82 155.52 87.62 96.00 387.58 650 7.42 <0.25 minor air

11/14/19 14:13 73 159.34 159.04 91.14 96.00 391.10 650 7.13

11/14/19 14:16 76 160.73 160.43 92.53 92.00 383.25 650 7.02

11/14/19 14:24 84 163.03 162.73 94.83 92.00 385.55 650 6.85

11/14/19 14:34 94 165.60 165.30 97.40 91.50 386.97 650 6.67

11/14/19 14:51 111 169.38 169.08 101.18 90.50 388.44 650 6.42

11/14/19 15:10 130 173.29 172.99 105.09 89.50 390.04 650 6.19

11/14/19 15:14 134 174.89 174.59 106.69 84.00 378.93 650 6.09

11/14/19 15:18 138 175.74 175.44 107.54 84.00 379.78 650 6.04

11/14/19 15:23 143 176.60 176.30 108.40 84.00 380.64 650 6.00 open valve all the way

11/14/19 15:26 146 183.05 182.75 114.85 42.00 290.07 <1

11/14/19 15:29 149 185.28 184.98 117.08 44.00 296.92 <1

11/14/19 15:31 151 186.34 186.04 118.14 42.00 293.36

11/14/19 15:34 154 192.03 191.73 123.83 5.00 213.58

11/14/19 15:38 158 195.08 194.78 126.88 5.00 216.63 1.00

11/14/19 15:42 162 196.80 196.50 128.60 5.00 218.35 1.00

11/14/19 15:46 166 198.30 198.00 130.10 5.00 219.85 <1

11/14/19 15:47 167 pump off

Lahontan Fish Hatchery Well #6

Measurement point top of casing = 0.3 feet above ground surface

Water level measured with non‐stretch Waterline electric sounder

Constant‐rate flow test, November 14th, 2019

Flow etimated using pump curve

Tested by SPF Water Engineering

10000

Fl o w R at e

W at e r Le ve l B e lo w S u rf ac e

Well 6 Water Level Well 6 gpm

Lahontan National Fish Hatchery Appendices

Rev. No. 1/April 1, 2021 21 McMillen Jacobs Associates

Appendix C

LAHONTAN NATIONAL FISH HATCHERY

PRODUCTION WELL 6R DRILLING AND CONSTRUCTION

Gardnerville, Nevada

SPF – McMillen Jacobs Associates 15002- 1

Technical Specifications

SECTION 15002 – TECHNICAL SPECIFICATIONS FOR

PART 1 GENERAL

1.01 THE REQUIREMENT

A. The Contractor shall furnish all materials, labor, plant, equipment, tools, supplies, transportation, and appurtenances for drilling, casing, developing, completing, and testing one (1) groundwater production (supply) well (named “6R”) for the US Fish and Wildlife Service (Owner) at the Lahontan National Fish Hatchery as specified herein and in accordance with the requirements of the Contract Documents.

B. The production well shall be constructed in accordance with Chapter 534 of the Nevada Administrative Code (NAC), Nevada Division of Water Resources (NDWR) standards, and Nevada Division of Environmental Protection (NDEP) standards.

C. Approximate depths of drilling and lengths of well casings and screens are to be used for the purpose of price estimation only. Exact depths and lengths may be adjusted depending on subsurface conditions.

D. A summary of the Work requirements is given below. Each item is discussed in subsequent parts of the Specification.

1. Mobilize to and demobilize from the work site.

2. Obtain drilling permit from NDWR.

3. Install a temporary or permanent conductor casing through surficial fill materials to a depth of approximately 15 to 20 feet.

4. Drill minimum 29-inch diameter borehole, install permanent 24-inch O.D.

diameter steel surface casing from +1 to 100 feet, and furnish and install annular seal to 100 feet.

5. Drill pilot borehole from 100 to 1000 feet.

6. Conduct geophysical logging of pilot borehole.

7. Ream pilot borehole to 23-inch diameter from 100 feet to depth approved by the Owner; for purposes of bidding assume 900 feet.

8. Furnish and install 14.5-inch I.D. HSLA (high-strength, low-alloy) steel casing and louvered casing from +2 to 900 feet.

9. Furnish and install 4-inch schedule 40 steel gravel feed tube from +2 to 58 feet.

10. Furnish, install, settle, and disinfect rounded gravel filter pack from bottom of reamed borehole to 50 feet.

11. Furnish and install surface seal from 0 to 50 feet

12. Develop the well by mechanical and pump surging methods.

13. Furnish, install, operate, and remove a temporary test pump and related equipment and perform a well pumping test.

14. Disinfect the well.

Gardnerville, Nevada

SPF – McMillen Jacobs Associates 15002- 2

Technical Specifications

15. Abandon existing well #6.

E. All well construction work not specifically addressed in these specifications shall conform to NAC 534 standards.

1.02 BEGINNING AND COMPLETION OF WORK

A. The drill rig and required equipment shall be mobilized to the site within 60 calendar days of receipt of Notice-to-Proceed (NTP) from the Owner.

1.03 SUBMITTALS

A. The Contractor shall provide shop drawing submittals with material documentation for the following items:

1. A brief narrative written description of the planned drilling process to be used including equipment to be used on-site.

2. Temporary test pump and motor to be used for well development, testing, and sampling.

3. Well casing and factory screen.

4. Sieve gradation, properties, and source of gravel filter pack material.

5. Plan for well disinfection.

6. Plan for test pumping.

All submitted materials documentation shall be approved by the Owner prior to ordering material. The Contractor shall provide submittals a minimum of 10 working days prior to mobilization.

1.04 SERVICES FURNISHED BY THE OWNER

A. The Owner shall provide land and rights-of-way for the Work specified in this contract.

The Contractor shall not enter on or occupy with laborers, tools, equipment, or material any ground outside the property and rights-of-way provided by the Owner unless stated otherwise by the Owner. Other contractors, employees, or agents of the Owner may enter the work site and premises used by the Contractor for business purposes.

B. The Owner shall participate in borehole drilling oversight, evaluation of drilling characteristics, sample examination, geologic log interpretation, and surface seal observation.

1.05 WORK SITE

A. The Work site is located on land controlled by the US Fish and Wildlife Service at 710 Highway 395 North, approximately 4 miles southeast of Gardnerville, Nevada, in Section 23, T12N, R20E. The site is known as the Lahontan National Fish Hatchery.

Figure 2 shows the location of the proposed production well in the SE quarter of the NW quarter of Section 23.

B. The Contractor shall minimize disturbance to surrounding property.

1.06 DRILLING CONDITIONS

A. Fill material consisting of large angular rock, boulders, gravel, and sand is anticipated to extend to a depth of 10 to 20 feet below ground surface.

Gardnerville, Nevada

SPF – McMillen Jacobs Associates 15002- 3

Technical Specifications

B. It is anticipated that drilling below 20 feet depth shall be in unconsolidated deposits of sand, gravel, clay, and mixtures of sand, gravel, and clay. The static groundwater level is anticipated to be within 40 to 90 feet of the ground surface based on existing onsite water supply and monitoring wells. It is the Contractor's responsibility to make their own determination of subsurface conditions. Well completion logs for the existing onsite water supply and monitoring wells are provided as an attachment.

C. It is the Contractor’s responsibility to become informed about local conditions affecting this Work. Neither the information contained in these specifications, nor gleaned from the Owner, or their agents, shall act to relieve the Contractor from any responsibility set forth in the contract.

1.07 CONTRACTOR QUALIFICATION AND EQUIPMENT

A. The Contractor shall have at least five years of well drilling experience with the proposed drilling method to be utilized, and shall have constructed at least 5 wells of comparable type.

B. The Contractor is responsible for providing equipment capable of performing the Work specified. The Contractor shall submit a list of equipment to be used on the project for review by Owner. The list shall include: (1) manufacturer; (2) load capacities; (3) year of manufacture; and (4) year of purchase by owner, for each major piece of drilling equipment to be utilized.

C. Damages to the well or surrounding property by the Contractor’s equipment or Work efforts, leased or otherwise, shall be repaired or replaced at the Contractor’s expense.

1.08 CONTRACT DOCUMENTS

A. The form and detail of the various features of the Work are illustrated on the following drawings accompanying and made part of the Contract Documents:

1. Figure 1 – Lahontan National Fish Hatchery Site Map & New Production Well 6R Design

2. Figure 2 – USFWS Lahontan National Fish Hatchery Production Well 6R Location.

1.09 WATER, POWER, AND SITE IMPROVEMENTS

A. The Contractor can obtain water from an existing pipeline, only as directed by the Owner’s hatchery staff. All water used for well construction purposes shall be of potable quality and adequately disinfected to prevent the spread of bacteria. Up to 100 gpm on a continuous basis shall be available.

B. The Contractor shall provide, at their own expense, all necessary piping, tanks, and equipment to transfer the pipeline to the drill site, and discharged well water from the drill site to a suitable disposal site.