Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Vicki Freese-supler

See continuation page

NPS, DSC Contracting Services Div 12795 W. Alameda Pkwy P.O. Box 25287 Denver CO 80225-0287

PDS

140P2025R0103

01/21/2026

09/30/2025

1 2

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140P2025R0103/0010

Yellowstone National Park - YELL 326133 -

Canyon WWTP

The purpose of this amendment is to provide for the final response to questions and to provide updated Construction Specifications and

Construction Drawings as follows:

1. Construction Specification 09 96 35B -

Chemical Resistant Coatings

2. Construction Specification 35 20 16.25B -

Fabricated Slide Gates and Stop Logs

3. Construction Specification 44 42 19.04B -

Rotary Positive Displacement Blower

4. Construction Specification 44 42 56.16B

Peristaltic Pump

5. Construction Drawing 460G050, Page 27 of

6. Construction Drawing 358E112, Page 220 of

7. Construction Drawing 358E113, Page 221 of

8. Construction Drawing 358E117, Page 226 of

9. Construction Drawing 358E301, Page 229 of

10. Construction Drawing 358E610, Page 236 of

11. Construction Drawing 358E612, Page 238 of

12. Construction Drawing 358E614, Page 240 of

13. Construction Drawing 358E622, Page 246 of

14. Construction Drawing 358E632, Page 255 of

15. Construction Drawing 358E633, Page 257 of

All other terms and conditions of the solicitation remain unchanged and are in full force and effect. The receipt of proposal date is not extended and remains as January 30, 2026.

11/11/2024

Date Received from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/19/2025

For preparation of Volume II, which version of Standard Form 1442 should be used — the three-page version included in Sol_140P2025R0103 or the two-page version included in B08_140P2025R0103 ?

The SF 1442 provided as part of the solicitation shall be utilized - 3 page version.

11/19/2025

The following documents have been provided as completed PDFs. Would the Government consider furnishing blank, fillable versions of these forms to facilitate completion and submittal?

• Project Experience Questionnaire

• Past Performance Questionnaire

• General References

• Small Business Participation Document

• Small Business Subcontracting Plan

The Word versions are attached.

11/19/2025

The NPS Small Business Subcontracting Goals include race- and gender-based classifications;

however, under the new DBE standards, those classifications have been removed.

Additionally, all Wyoming DBEs and SBEs have been decertified, leaving none currently available for solicitation. With the SBA website also offline, posting projects is not possible.

Given these circumstances, can you clarify how bidders can demonstrate a good faith effort to meet the current subcontracting goals?

The NPS has not been required to remove the requirements as of this date even though the requirements may changed with the new "FAR overhaul". Until such time, Offerors shall continue to recruit potential small businesses to meet the required socio-economic goals as presented. If the Offeror is a small business a subcontracting plan is not required.

11/19/2025

One of the specifications states a requirement for Gold Certification with Inductive Automation. Is this a solid requirement? We have familiarity with Ignition (Inductive’s SCADA platform) and have implemented it in the past, but we do not hold the Gold Certification. Gold Certification for Integrators will be a requirement for this project.

11/19/2025

Factor - Project Experience - the solicitation requires us to address several topic (teaming experience, remote work, key trades and previous wastewater plant construction experience)

- are we supposed to address each of the four topics for each project we include or provide a general response to each topic? Each topic needs to be addressed with each project.

11/19/2025 6 Factor 5 - Past Performance - can we use a previously completed PPQ or CPARS.

Only previous PPQ's will be accepted. The Government will pull CPARS records as part of the evaluation process.

11/19/2025

7 Is there a planholders list available for this projects?

Please refer to previous amendment issued for a list of site visit attendees otherwise no planholders list is maintained by the Government.

11/19/2025 8 Is there an online portal/website for accessing future addendums and other bid documents? Yes, SAM.gov

11/19/2025

Will product substitutions need to be provided during the solicitation phase or after contract award.

Per 52.211-6 Brand Name or Equal (AUG 1999) provides that "to be considered for award, offers of "equal" products, including "equal" products of the brand name manufacturer, must

(1) meet the salient physical, functional, or performance characteristics specified in the solicition; (2) clearly identify the item by i) brand name, if any; and ii) make or model number;

(3) include descriptive literature such as illustrations, drawings, or a clear reference to previously furnished descriptive data or information available to the Contracting Officer; and

(4) clearly describe any modifications the Offeror plans to make in a product to make it conform to the solicitation requirements. Mary any descriptive material to clearly show the modifications." This information must be supplied with the Offeror's proposal for consideration during the evaluation phase of the solicitation. The Contracting Officer will evaluate "equal" products on the basis of information furnished by the Offeror or identified in the offer and reasonably available to the Contracting Officer. The Contracting Officer is not responsible for locating or obtaining any inforamtion not identified in the offer.

11/19/2025

10 44 46 22

1.02.A: Please confirm if screw press manufacturer is responsible for supplying the following items in their equipment package:

- Dewatered cake conveyor (HUBER can provide their proprietary Ro8T shafter screw conveyor for this application.

- Emulsion polymer preparation system

- Dewatering system feed pump

- Mechanical equipment platform and stairs shown on Drawing 101 Sub Sheet 375A301

Screw press manufacturer is responsible for providing equipment outlined in specification 44 46 22. All other equipment is outlined in other specifications.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/19/2025

11 44 46 22

2.03.C.2.b.1: Please confirm required performance values as those listed in this paragraph (50 gpm @ 1.7%) conflict with the flow values listed on plan drawing 101 sub sheet 350G045 (85 gpm @ 0.9%).

Performance should meet specifications of 50 gpm at 1.7% solids, sheet 350G045 will be updated accordingly.

11/19/2025 12 44 46 22

2.03.D.1.g: Please change minimum drain line diameter to 6-inches to match the dimensions of the named manufacturer’s machine.

The spec calls out a minimum of a 4" drain line. A 6" drain line is permitted as written.

11/19/2025

13 44 46 22 2.03.D.3.b: Please confirm the available water pressure to the Canyon facility.

Per 2.03.D.3.b the washwater supplied to screw press is supplied from the non-potable water pumps at the process building. These are designed to deliver 100 psi to the screw press as required for cleaning.

11/19/2025

14 44 46 22

2.04.B.1.b: This paragraph outlines a NEMA 12, 304 stainless steel enclosure for the screw press control panel and section 2.04.C.1.b outlines a NEMA 4X 304 stainless steel local control station. On drawing 36, dewatering building room that control panel and local control station are mounted in, is outlined to have NEMA 4X, 316 stainless steel control panel. Please confirm that screw press control panel and local control station shall include NEMA 4X, 316 stainless steel enclosures.

NEMA 4X, 316 SS will be required per the Site Area Classification and Materials Selection table 450G074. Specification 44 46 22 will be updated to match.

11/19/2025

15 44 46 22

2.04.D: This paragraph outlines the PLC, OIU, managed ethernet switch, and UPS as specified in specification section 40 99 90. Section 40 99 90 does not appear to outline specific make and models for these components. Please confirm that the manufacturer standard Allen- Bradley CompactLogix PLC, PanelView Plus 7 7” OIU, Phoenix Ethernet switch, and a Phoenix UPS are acceptable for the screw press control panel. If not, please confirm the make and models that are acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

16 44 46 22

2.04.D.8.c.1: This paragraph outlines the VFD shall comply with section 26 29 23. Section 26 29 23 does not appear to outline a specific make or model for the VFD. Please confirm if the manufacturer standard Allen-Bradley PowerFlex 525 VFD is acceptable. If not, please confirm the make and model that is acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

SCREW PRESS INDUCTION MOTOR DATA SHEET: Additional motor requirements listed in referenced section 26 24 19 and the motor grounding mentioned on this data sheet would require the screw press manufacturer to provide a non-standard, custom motor as HUBER’s standard Nord motor does not utilize these special features. A custom motor like this has the potential to significantly increase machine cost and lead time as well as availability problems should it need to be replaced in the future.

Manufacturer may take exception to motor grounding and requirements in specification 26 24 19 that are not standard with a provided explanation.

11/19/2025

18 350G042

Please clarify if the intention in utilizing a DS storage tank upstream of the screw press is to feed the unit in batches. This is not recommended and may have a negative impact on performance, as optimal dewatering system operation requires that the system has adequate time to reach steady state.

Digested sludge is pumped from the aerobic digesters to the Screw Press Feed Tank and then the Screw Press Feed Pump will convey sludge at a higher head condition to the screw press.

This dual-pumping arrangement will be continuous and not a batch operation. This arrangement is due to the relative locations of the aerobic digesters and the screw press.

11/19/2025

19 359N025

Please note that PSH 375-212 is shown in the drawings as a pressure switch. HUBER will supply a pressure transmitter instead that sends an analog 4-20mA signal to the screw press main control panel.

Note that 375-SV-223 and 375-PSL-224 will be located in the screw press manufacturer supplied pneumatic control panel. The tubing between the pneumatic panel and cylinders to be installed by the contractor.

This is acceptable.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/19/2025

20 359025

Ball and butterfly valves boxed in red below are to be provided by others. This drawings shows the inclined screw conveyor powered and controlled by 375-MCC--001 and outside of the screw press scope. The drawing also appears to show some control devices for the inclined screw conveyor connected to the screw press control panel 375-LCP-200.

Specification section 44 46 22 does nto appear to outline any connections between the screw press control panel and control devices for the conveyor. Please confirm that all control devices for the inclined screw conveyor and connections to these devices shall be provided by others.

This is acceptable.

11/19/2025

21 375D101

Please note that the screw press, when empty, has a weight of 8,200 lbs. Is the intention to use the monorail shown in this drawing to lift the entire machine during installation? Please confirm how screw press will be brought into the sludge dewatering building during installation

Contractor will coordinate installation of screw press. The monorail is for removing pieces for maintenance and primarly used for moving totes. The whole screw press does not need to be lifted by the monorail.

11/19/2025

22 375D901

Flushing T-connection (4027-182) at screw press inlet is discouraged. Utilization of an elbow in this fitting’s place will decrease the probability of floc shear, and optimize system performance.

Sludge feed piping to the screw press that is elevated above the screw press inlet is not recommended. Piping configurations such as this can exert extra pressure on the screw press inlet and create siphoning issues when air becomes entrained in the elevated segments.

Flushing tee connection at inlet will be removed and replaced with elbow per manufacturer's recommendation. An air release valve will be added on the elevated piping to reduce siphoning, additional pressure is not expected to cause issues on screw press operations.

Engineer has elevated piping prior to screw press on previous projects and has not observed issues.

11/19/2025

23 375D301

The screw press is shown with end covers. These covers are aesthetic only, and not necessary for proper machine operation. Please confirm if these covers are desired.

Please confirm reasoning for use of eccentric reducers shown on each end of the flocculation pipe. HUBER recommends the use of concentric reducers to increase each reducer's ease of manufacture.

No end covers are required. Eccentric reducers will be used to prevent air trapping and allow smoother flow of sludge.

11/19/2025

24 40 90 00

Specification section 40 90 00 is not referenced to in any of the equipment sections (44 42 30, 44 42 31, and 44 46 22). Theis section outlines coordination meetings, spare parts, control requirements, etc. Please confirm that requirements outlined in this section do not apply to sections 44 42 30, 44 42 31, 44 46 22.

No, the referenced sections do not need to comply with 40 90 00. However, per the specification language packaged systems must comply with specification 40 99 90 Packaged Control Systems.

11/19/2025

25 40 96 00

Specification section 40 96 00 is not referenced to in any of the equipment sections (44 42 30, 44 42 31, and 44 46 22). This section outlines software programming requirements. Please confirm that requirements outlined in this section do not apply to sections 44 42 30, 44 42 31, 44 46 22.

No, the referenced sections do not need to comply with 40 96 00.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/19/2025

26 44 42 30

2.01.B.1: HUBER requires the Rotomat RPPS Size 1000 in lieu of the Size 780. The specified flow rate and TSS loading exceed the operational limits of the Size 780, consistent with previous HUBER proposals. All technical requirements and ancillary equipment associated with the Size 1000 shall be incorporated into the project design. (agreed with engineer)

Jacobs anticipates the design conditions below which are well within the capacity of the model 780 unit:

Peak Month: Flow = 0.5 MGD; TSS < 350 mg/L Peak Hour: Flow = 1.37 MGD; TSS< 50 mg/L Peak flows typically occur in spring during snowmelt. If 1.37 MGD ever occurs, it is expected to be at least 80% clearwater from snowmelt/rain infiltration/inflow which will greatly reduce solids concentration and load on the screens.

12/3/25 Correspondence from Huber to Jacobs states "Below is the max wastewater flow capacity for the RPPS 780 2mm perf at different TSS levels:

Based on this, the RPPS 780 should be sufficient, and there’s no need to size up to the RPPS 1000."

11/19/2025

27 44 42 30 2.01.C.2: The nominal diameter shall be revised to 1000 mm to correspond with the selected screen size. See comment 26.

11/19/2025

28 44 42 30

2.01.C.4: The drawings indicate a channel width of 2 ft 8 in, whereas the specifications list 2 ft 6 in. The HUBER RPPS requires a minimum channel width of 40 inches; therefore, the channel width shown in the contract documents must be updated accordingly. See comment 26.

11/19/2025 29 44 42 30 2.01.E.9: The maximum upstream water level for proper RPPS operation is 26.18 inches. See comment 26.

11/19/2025

30 44 42 30

2.02.E.2.b: The specification requires a minimum motor size of 2 hp. HUBER standard design for this equipment utilizes a 1.5 hp motor, which is fully adequate for the intended duty and should be accepted as a compliant alternative.

A 1.5 hp motor is acceptable. Specification will be updated.

11/19/2025

31 44 42 30

2.05.B.1: This paragraph outlines NEMA 4X FRP control panels. On drawing 36, the electrical room that the control panels are mounted in, is outlined to have NEMA 1, painted steel control panels. Can you confirm fine screen control panels shall include a NEMA 1, painted steel enclosure.

NEMA 1 painted steel is acceptable if installed in the electrical room. Specification 44 42 30B will be updated to match Material Selection Table on sheet 350G074.

11/19/2025

32 44 42 30

2.05.C.2: This paragraph outlines utilizing an ultrasonic level sensor but does not specify a make or model. Please confirm if the manufacturer standard Siemens STH ultrasonic sensor and HydroRanger LT500 are acceptable. If not, please confirm the make and model that is acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

33 44 42 30

2.05.C.4.a.3: This paragraph outlines a PLC but does not specify a make or model.

Additionally, specification section 40 99 90 does not appear to outline a specific PLC or OIU that is required. Please confirm if the manufacturer standard Allen-Bradley Micro850 PLC and a 4” PanelView 800 are acceptable for the fine screen control panels. If not, please confirm the make and models that are acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

34 44 42 30

2.05.C.4.a.13: This paragraph outlines a screen motor starter. Huber standard for the RPPS is to use a VFD for motor controls. Please confirm the motor controller type that is to be included.

If a VFD is used a motor starter is not required. Added "if VFD not used" to specification.

11/19/2025

35 44 42 30 2.08.C.1: The screen shall not be tested while in its operating (vertical) position due to the inherent safety risks. HUBER requests this requirement be removed or revised.

"in its operating position" will be removed from the specification. Manufacturer is still expected to comply with 3.02 Field Quality Control and test for 6 hours of continous operation when in place.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/19/2025

36 44 42 30

3.02.A: HUBER cannot operate the screen dry for six continuous hours, as such operation leads to premature wear and unnecessary mechanical stress. A modified commissioning procedure is requested.

The specification does not call out for testing the equipment dry, manufacturer may test the equipment with clean water or wastewater.

11/19/2025

Fine Screen 1 & 2 Induction Motor Data Sheet

HUBER will supply a Variable Frequency Drive (VFD) in place of a constant-speed drive. Use of a VFD provides significantly improved operational control and enhances long-term equipment performance.

A VFD is acceptable. Induction Motor Data sheet will be updated to remove constant speed requirement.

11/19/2025 38 360D301 Please confirm height of dumpster after RPPS A typical 2 CY dumpster will be provided. Height is expected to be 3' to 4'.

11/19/2025

39 350G074

This drawing appears to state that enclosures in the headworks room shall be NEMA 7, 316 stainless steel. Can you confirm if cast aluminum, NEMA 7 local control stations are acceptable in lieu of stainless steel.

NEMA 7 316 SST enclosures are required for electrical enclousres in the headworks room per 450G074.

11/19/2025 40 44 42 31

2.07.C.1: Please confirm whether the Ro3.1-specific information is required for the RotaShield, or can we remove it from the septage receiving section?

If these requirements are not relevant to the proposed RotaShield vendor may take exception.

11/19/2025

41 44 42 31

2.03.E.1: Section 44 42 31 specifies that a rock trap and flow meter are to be installed on the RotaShield inlet to ensure proper operation of the equipment. Please confirm where the rock trap and flow meter are shown in the plan drawings. Given the limited space between the inlet and the truck connection, how are these components intended to be applied and used in this layout?

Manufacturer to provide rock trap as specified and to fit into existing layout. The flow meter was assumed to be required based on manufacturer provided PIDs, if flow meter is not required for operation of the equipment it can be removed. Manufacturer is responsible for providing all necessary instrumentation to operate the Septage Recieving Equipment.

11/19/2025

42 44 42 31

2.08.B.1.c: Outlines a PLC but does not specify a make or model. Additionally, specification section 40 99 90 does not appear to outline a specific PLC or OIU that is required. Please confirm if Huber standard Allen-Bradley Micro850 PLC and a 4” PanelView 800 are acceptable for the septage receiving control panel. If not, please confirm the make and models that are acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

43 44 42 31

2.08.B.1.P: Outlines a NEMA 4X stainless steel enclosure. On drawing 36, the electrical room that the control panel is mounted in, is outlined to have NEMA 1, painted steel control panels. Can you confirm the septage receiving control panel shall include a NEMA 1, painted steel enclosure.

NEMA 1, painted steel enclosure can be used for control panels in the electrical room.

Specification wll be updated.

11/19/2025

44 44 42 31

2.08.B.5: Outlines a pressure transmitter in accordance with section 40 99 90. Section 40 99 90 does not appear to outline a specific make or model for the pressure sensor. Please confirm if Huber standard APG PT-500 pressure sensor is acceptable. If not, please confirm the make and model that is acceptable.

Manufacturer is responsible for selecting and providing the appropriate make and model in accordance with the requirements of the specifications and compatability with equipment.

11/19/2025

45 358E620

For the RotaShield, could you please clarify the intended purpose of instruments 460-FIT-002 and 460-PIT-003? Are these signals intended to be connected to or monitored by the RotaShield control panel?

460-FIT-002, and 460-PIT-003 are intended to transmit flow and pressure data from the flow and pressure meter to the control panel. These were included based on PIDs provided by Huber during the design phase. If transmitters are not required for operation of the equipment they can be removed. Manufacturer is responsible for providing all necessary instrumentation to operate the Septage Recieving Equipment.

11/19/2025 46 350G044

The Septage Receiving Station section lists the equipment at 400 GPM, but Spec Section 44 42 31 states we’re sizing for 700 GPM. Please confirm which flow rate is correct. Assume 700 gpm. 450G044 to be updated accordingly to match 44 42 31.

11/19/2025 47 360D301

Please confirm the dumpster height required for the Wash Press discharge in the septage receiving area. A typical 2 CY dumpster will be provided. Height is expected to be 3' to 4'.

11/19/2025

48 360D901

The wash water connection shown in the plans for the RotaShield is not in the standard location for this equipment. Could you please clarify the reasoning and responsibilities for why it is shown on top of the unit? We will provide our standard drawings to illustrate the correct connection location.

Sheet 360D301 Note 1 calls out to coordinate with manufacturer on wash water connections, connections can adjusted as required.

11/19/2025

49 359N001

We noticed a connection in the plans showing the RotaShield tied into a blower labeled as the “septage blower.” This configuration is not standard, as Huber does not require or utilize a blower for RotaShield operation. Could you please verify who will be supplying this equipment and how it is intended to be controlled?

Septage blower is provided to mix and aerate the septage holding tank and is tied into the plant control panel. This is not part of the septage receiving station package.

11/19/2025 50 350G044

The Septage Receiving Station section lists the equipment at 400 GPM, but Spec Section 44 42 31 states we’re sizing for 700 GPM. Please confirm which flow rate is correct. See response to number 46.

11/19/2025 51 359N001

Appears to show the septage blower as outside of the septage receiving scope. Please confirm that the septage blower shall be powered and controlled by others. See response to number 49.

11/25/2025

52 44 46 13.02

The Shaftless Screw Conveyor Induction Motor Data Sheet included in this section states:

Hazardous Location: Furnish motors for hazardous (classified) locations that conform to UL 674 and have an applied UL listing mark. This contradicts Section 44 46 22's data sheets for the screw press, air compressor, and booster pump which all require unclassified motors.

Please confirm that the area classification rating for the screw press dewatering room will be non-hazardous/unclassified. The motor will not be in a classified area.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/25/2025

53 360D301, Section D

In the Headworks building on .dwg 360D301 Section D it shows a 4" V137 valve on the 8" SEP line. Type V137 is not listed under the gate valve specification. Can you supply the V137 valve information and should it be a 4" or 8"? Valve should be V405 and should be 8". 360D301 marked up accordingly.

11/25/2025

54 46 66 20

Section 1.04.A.8 provides that fully documented ladder logic listings, I/O printouts and cross referenced printouts documenting programmable controller software program. Cannot provide as Trojan's system runs off of an embedded program, not a PLC in ladder. Please remove this requirement. Vendor may take exception to this requirement with the provided explanation.

11/25/2025

55 46 66 20

Section 1.04.A.17 provides that estimated power consumption (kWh), harmonics generation, and power factor for individual UV reactor at 50 percent, 75 percent, and 100 percent ballast power levels. Lowest power level for this chamber type is 60%. Please change the minimum estimated power consumption to 60% power. Updated specification to say "minimum percent" instead of 50%.

11/25/2025

56 46 66 20

Section 2.01.C.1 provides that the UV system shall be capable of operating indefinitely during a 30 percent voltage drop from nominal, without shutting down. PDC nomincal voltage 208v as per a later paragraph. The lamp drivers are designed to operate at 187v min. i.e. lamp drivers can only work at 10% voltage drop at the given nominal voltage. Please change this to a 10% drop. Vendor may take exception to this requirement with the provided explanation.

11/25/2025

57 46 66 20

Section 2.01.C.2.c provides that a maximum flow per reactor: 0.67 MGD. Our original design was 1.5 MGD per reactor which resulted in the 32 lamp reactor proposed. This new flow of

0.67 MGD per reactor results in a change from our 32 lamp reactors to our 18 lamp reactors.

If the flow is actually 0.67 MGD then the spec will need to be updated for our smaller reactor.

Note that Drawing #101, Sheet 21 shows a Peak flow per unit of 1.5 MGD. Please confirm the flow.

Peak flows will be 0.67 MGD. Spec has been updated to allow a lower number of lamps.

Vendor to provide appropriate number to treat 0.67 MGD. Drawing 350G044 updated accordingly.

11/25/2025 58 46.66 20

Section 2.02.I.1.c provides that PDC enclosure shall be wall-mounted. Our enclosure is floor mounted. Will this be acceptable? This is acceptable.

11/25/2025

59 46 66 20

Section 2.02.I.2.a provides that each PDC shall be designed to operate with the following electrical supply: 208v, single-phase, 2W+GWD, 50/60-Hz, 4.9 kVA. Our reactor is a 8.6kVA per PDC. Please change to 8.6 kVA. Vendor may take exception to this requirement with the provided explanation.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/25/2025

60 46 66 20

Section 2.02.I.2.f.3) provides that the operator interface shall be menu driven and shall display the following system information when prompted: reactor status, individual lamp status, lamp operating hours, RED (dose), UV intensity, power level, alarms, alarm. Individual lamp status is not provided on the CPP HMI. Lamp hours are tracked as a system and if an individual lamp fails this will be indicated by a specific lamp alarm. Please remove the requirement for individual lamp status shown on the OIT. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

61 46 66 20

Section 2.02.I.2..F.4) provides the most recent alarms shall be displayed on the operator interface when prompted, recorded by alarm type, date and time of occurrence, and date and time of correction. Date and time of correction for alarms not available. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025 62 46 66 20

Section 2.03.A.4 provides software documentation: Our system does not use a PLC;

therefore, we cannot supply. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

63 46 66 20

Section 2.03.B.2.a provides that communications between the UV system and Plant SCADA shall be via Ethernet. MenIPtion of Ethernet communications; please clarify which flavor of Ethernet is required, Allen Bradley EthernetIP, Modbus TCP, or Profinet?

Allen-Bradley Ethernet IP is preferred. However, PIC may propose a control system that uses Modbus TCP or Profinet.

11/25/2025

64 40 99 90

Entire Section. This entire section appears to be written for PLC's. We take exception as we are providing a pre-defined product that cannot be manipulated or changed from a programming perspective. The testing of I/O, etc. is good and having someone available and knowledgeable of the product to assist with integration is of no concern. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

65 40 99 90

Section 1.01.A.1 provides that the supplier package control system shall include all electrical system components and control system components required for a complete, fully functional and operable control system including panels, power supplies, programmable logic controllers (PLCs), input/out (I/O) systems, interconnect wiring, communication interfaces, networking devices and instruments. Our system does not use a PLC therefore we cannot supply. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

66 40 99 90

Section 1.01.E.1.a provide detail logic and controls to automatically operate all package system equipment. Provide a package system PLC and HMI that shall interface to and be integrated with, the PCS for supervisory control set points, command initiating points, monitoring and alarming as defined in the specific supplier equipment specification, and programming requirements of the Process Control Descriptions. Provide documentation of a completed FDT for the control panel and PLC software. Our system does not use PLC therefore, we cannot supply. Please remove the requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

67 40 99 90

Section 2.04.D provides that where a control panel is specified under this section, panels shall be UL 508A labeled and, unless noted otherwise, shall be rated for an available fault duty of 42,000 amps at 480 volts or 22,000 amps at 240 volts or less. Our reacting with Wiping, rated for 5kA. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

68 40 99 90

Section 2.04.E provides that where a control panel is specified under this section that include both power and controls components, where power components are defined as electrical components operating at above 120v as nominal line to ground or line to line, the panel shall be provided with physical separation between the power and controls components as specified in Division 26, Electrical. We cannot provide a physical separating barriers between high and low power components since this is not part of standard design. However, high and low voltage wiring are provided with separate wire ducts to prevent inference issues between them. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025 69 40 99 90

Section 2.05.B.1 provide a) PLC processors shall be sized with sufficient memory to process the package control system application control…. Our system does not use PLC. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025 70 40 99 90

Section 2.05.D.2 provides panel layout. Our panel is a standard design and is always supplied as a floor mount panel. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

71 40 99 90

Section 2.05.D.5.b provides that the nameplates shall be attached to the panel with a minimum of two self-tapping Type 316 stainless steel screws. Provide RTV sealant for nameplates for NEMA 4X stainless steel panels. We use adhesive panel nameplates as standard. Also CPP panel is not designed to have screw mounted nameplates since the microcontroller based PCB control board in mounted on the door inside the panel. Please allow adhesive nameplates. Vendor may take an exception to this requirement with an explanation provided.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/25/2025

72 40 99 90

Section 2.05.D.8.b provides that wiring shall be tagged at terminations with machine-printed plastic sleeves with three-part wire numbers for instrument and control panel internal conductors. Our system's wiring will not follow 3 part wire numbering scheme. We use wire identification scheme that is based on location of the wire on the panel wiring diagram. We will only follow the wire colors specified. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

73 40 99 90

Section 2.04.D.8.b provides that wiring shall be tagged at terminations with machine-printed plastic sleeves with three-part wire numbers for instrument and control panel internal conductors: Please clarify if customer wants heat shrink wire markers in the panel or will our standard wrap around (adhesive) wire markers be acceptable? Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

74 40 99 90

Section 2.05D.9.a provides that power and control wiring shall be carried in covered channels separate from low voltage signal circuits. An interior steel barrier shall be provided between AC control devices and the electronic equipment. We cannot provide a steel barrier with our system. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025 75 40 99 90

Section 2.05D.11 Fuse and Fuse Holders. Our CPP panels do not use fuses. All circuits are protected by ABB SU200M series breakers. Please allow for breakers. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

76 40 99 90

Section 2.05.D.12.A provides one 120v ac, UPS supplied circuit, for control power source:

dual, redundant with diode autioneered outputs and automatic switching between power sources, one for PLC and DC power and one for PLC output and input control Our CPP panels cannot accept multiple power sources. They are to be supplied with a single Non-UPS 208- 204v 1Ph power source. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

77 40 99 90

Section 2.05.D.14 Accessories: a) panels greater than 24 inches high by 24 inches wide shall include GFCI convenience receptacles and fluroescent utility lights. b) receptacles and utility lights shall not be powered by the UPS, where included. C)print pocket; d) Fold-up shelf of sufficient size, sufficient weight capacity, and the proper angle for supporting a laptop computer. Our CPP panel cannot be modified to accept these requirements: receptacle, panel light and print pocket. Please remove these requirements. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

78 40 99 90

Section 2.05D.18.c direct current power supplies: We use Phoenix contact Trio 3 5A power supply in the CPP panel. This cannot be changed as it is part of standard design and it cannot be monitored since the micro-processor based control PCB does not have an option to monitor it. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

79 40 99 90

Section 2.04.D.19.a provide primary surge protectors, per NEC Article 800.90 on all signal conductors entering the panel. Surge protectors shall be multi-stage, plug-in type selected to protect the equipment, and listed per ANSI/UL 497. Surge protectors shall be removable without changing the impedance of the . Will not be able to provide analog SPDs due to space constraints in the CPP panel. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

80 40 99 90

Section 2.05.D.20 Panel grounding: Each panel shall be provided with two copper ground bars. We do not provide ground bars as standard. The equipment ground is landed on a ground lug mounted on the panel backplate. Please remove this requirement. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

81 40 99 90

Section 2.05.C.1.a Communications via communication module that plugs in to the main processor rack. 1) Modicon to/from PCS data communicated over network vai Modbus TCP/IP. 2) Rockwell Automation to/from PCSI PCS data communicated over network via EthernetIP for Rockwell Automation PLCs. We can do both Modbus TCP and Allen Bradley EthernetIP, please clarify preference for our microprocessor communications to SCADA. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

82 40 99 90

Section 2.05.C.1.d.2).a) the ControlLogiX PLC supports EIP user-defined datatypes (UDT). Our product does not have UDT support for communications (Produced/Consumed); instead is class 1 communications as it will show up within the I/O tree as a generic ethernet device;

Supplemental Manual for integration discusses this. Vendor may take an exception to this requirement with an explanation provided.

11/25/2025

83 40 99 90 Mentions UPS in various spots. We cannot supply a UPS for the CPP's. Please remove reference to this.

All control panels are specified to have their own UPS’s and that is written into the control panel specification (40 91 00B Instrumentation and Control Components; Section 2.03.D).

11/25/2025

84 Page 315 of 716 .dwg 359N102

Drawing shows 2 ethernet cat 6 connections from each CPP panel for 2 separate network switches (370-NTSW-01 and 370-NTSW-02). CPP panels do not have an ethernet switch as standard and uses a PCB addon board to provide ethernet connection. Connection shown will require an ethernet switch in the CPP panel. Need confirmation if customer will need a managed switch or an unmanaged switch. Considered option: Unmanaged: Phoenix contact 1085039; Managed: Phoenix Contact 2702323 Unmanaged Switch is acceptable.

from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

11/25/2025

85 Page 247 of 716 .dwg 358E612

Panel board 370-LP-01 powers the Trojan CPPs. But it shows 3 pole feeds to the CPP with 20A breakers. CPP Panels that work on 208V are 1Ph 2W+GND systems. Panelboard shows the CPP fed using 3 pole breakers. Use pole or single pole breaker to feed the CPP with 8.6 kVA load for the phase.

Drawing 358E612 and 358E629 have been marked up to allow pole or single pole breakers to feed the CPP.

11/25/2025

86 Page 237 of 716 .dwg 358E612

Panel board 370-LP-01 power the Trojan CPPs. But it shows 3 pole feeds to the CPP with 20A breakers. Our CPP internal main breakers is 50A. So the breaker feeding the CPPs should be rated greather than 50A. Drawing 358E612 and 358E629 have been marked up to increase the 20A breakers to 50A.

12/1/2025

Sheet 239 of 716, Drawing Sheet 358E601

Standby Generator 390-GEN-003 is shown as a 277/480v, 3-Phase, 4-Wire Unit but the Feeder between the Gen Set and Automatic Transfer Switch 370-ATS-100 is shown to be a 3-Phase, 3- Wire. Can you please clarify?

Generator is 4-wire with the Neutral-Ground bond at the generator as shown on the one-line diagram sheet 358E601, as such, a 3-wire feeder to the ATS is appropriate.

12/1/2025

Sheet 239 of 716, Drawing Sheet 358E601

Feeder between the Utility CT/Meter Cabinet and Service Entrance Switchgear CYN-SES-01 is shown to be 277/480V, 3-Phase, 4-Wire. The feeder between CYN-SES-01 and 370-ATS-100 is shown to be 3-Phase, 3-Wire. Is this correct? Is the Neutral stopping at the Service Entrance Switchboard CYN-SES-01? Can you please clarify?

Neutral-Ground bond is at the service entrance switch CYN-SES-01. The neutral does not need to continue any further into the distribution system. 3-wire feed from SES to ATS is appropriate.

12/1/2025

Sheet 239 of 716, Drawing Sheet 358E601 Is 370-ATS-100 to be a 3-Phase, 3-Wire?

ATS is to be three-pole unit. Any neutral, if provided, will not be used. The electrical distribution system is a 3-wire system. Neutrals end at the neutral-ground bonds at SES & Generator.

12/1/2025

90 385E102 (Sheet 563 of 716

Intraplant Pump Station - upper level shows (4) Type 3 Stanchion Mounted Light Fixtures around the perimeter of the Station but the Fixture Schedule on Drawing 358E606 (Sheet 244 of 716) lists this fixture as a 2' x 4' commercial grade troffer. Can you please provide correct manufactuer and part number for this fixture. See markedup drawings 385E102

12/1/2025

On Plan Sheet 355x112 Keynote 2 indicates demolition and removal of the lagoon 2 including liquids and solids. Can you please specify the volume of solids we are to bid for removal in this lagoon?

Lagoon 2 can hold 1.1 MG. It should be assumed that contractors will need to dewater 1.1 MG of sludge at 1,500 mg/L TSS (0.15% solid).

12/1/2025

On Plan Sheet 355 x 113, Keynote 4 indicates demolition and removal of the lagoon 2 including liquids and solids. Can you please specify the volume of solids we are to bid for removal in this lagoon?

Lagoon 2 can hold 1.1 MG. It should be assumed that contractors will need to dewater 1.1 MG of sludge at 1,500 mg/L TSS (0.15% solid).

12/1/2025

93 358E601

"Electrical One-Line" - 465-ATS-100 is shown as 2500A rated. This is fed by a 2000A 100% RATED BREAKER and feeds a downstream 100% rated 2000A breaker. The ATS will be rated 100% as noted in Specification 26 36 23 2.01 B17. Please confirm that it is acceptable that the ATS can be rated at 2000 amps. 2000A, 100% rated ATS is acceptable.

12/1/2025

94 26 36 23

Section 2.04 requires a PQ meter on the load of the ATS although it is not shown on drawing 358E601 for 465-ATS-100. A PQ meter is shown on 358E601 "Electrical One-Line": 370-SWB- 100 is rated 3000A bussing and Main Breaker is 2000A 100% rated. Please confirm that it is acceptable that 370-SWB-100 bussing can be rated at 2000 amps.

Provide PQ meters as specified.

12/1/2025

95 358E601

"Electrial One-Line" 370-SWB-100 is rated 3000A bussing and the Main Breaker is 2000A 100% rated. Please confirm that it is acceptable that a 370-SWB-100 can be rated at 2000 amps. 2000A bus switchboard is acceptable.

12/1/2025

96 358E601

"Electrical One-Line: Feeder breakers with ERMS symbol are to have an Arc Reduction Switch. For the 225A breaker, the feature doesn’t offer benefit given the small ampacity. If still required, we would need to update the breakers to a 400AF to provide this feature which would be very costly. Is it acceptable to remove the ERMS feature and provide LSI trip only for the 225A breaker?

225AT/225AF breaker should be 225AT/400AF with ERMS. Provide ERMS where shown.

12/1/2025 97 358E602 Shows an AHF (Active Harmonic Filter) in 370-MCC-100. Please provide what size filter is required for this MCC. Also please confirm an AHF is not required for 375-MCC-100.

At 370-MCC-01, provide an active harmonic filter (AHF) with a nominal rating of 50A.

At 375-MCC-100, an AHF is not required.

12/1/2025

98 26 33 53 Although there is a UPS specification section in 26 33 53 we would like to confirm that there is not a UPS required.

Correct, no UPS is required per specification 26 33 53. However, all control panels are specified to have their own UPS’s and that is written into the control panel specification (40 91 00B Instrumentation and Control Components; Section 2.03.D).

12/5/2025

Drawing 358E603 (Sheet 241 of 716) One Line Diagram 3 of 5: Power Panelboard 370-DP-A is shown as a 100amp panel on Drawing 358E612 shows it as a 100 amp panel but the circuit breaker in 370-MCC-100 feeding this panel is a 225 amp frame with a 225 amp trip feeder.

Circuit P43 is a 2" conduit with (3) #4AWG GND which is rated for 225amps. Can you please clarify? Please provide a 225A Panelboard instead of the 100A panelboard shown on the drawings.

12/5/2025

Since the proposal due date has been extended to January 8, 2026 ma the final day for bidder questions be extended to December 19, 2025. The date remains unchanged.

12/5/2025

Please confirm and specify the required wind load, snow load and seismic design criteria for the steel buildings included in this project.

Refer to drawing 359S101 for the seismic condtions. Refer to 359S102 for wind and snow loading condtions.

12/5/2025 102 Does this project require a Project Labor Agreement (PLA)? No 12/5/2025

Has the WWTP project been designed for an earthwork balance or should the contractor anticipate import/export of material? Import/export material is expected. [EWN] from NPS

NPS Question No.

Sheet

Detail

Spec

Description (*) Response

12/5/2025

Is the contractor required to remove excess soil from the site? If so, where is the approved disposal location?

Excess material from the site should be disposed of within the Park, only in the approved location where coordinated with the Contracting Officer. Contaminated soils will need to disposed of properly and might not be within the Park and shall meet all federal, state, and local laws and regulations. [EWN]

12/5/2025

On 2.11 it talks about gear reducer. On 2.12 it says V-Belt. Can you find out what exactly they are looking for? The drawing on the septage metering pumps show V-Belt. Do not see a drawing for the screw pumps. Lastly on the screw pumps it calls out for one pump and one shelf pump. Does the shelf pump need to be complete package or pump only?

Either a V-belt or gear reducer can be used. The screw press feed pump is located in facility

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