C04a RFI QA 1240LT26Q0109 102026.docx

FOR OFFICIAL USE ONLY

REQUEST FOR INFORMATION (RFI) FORM

1240LT26Q0109

GAOA Flaming Gorge Water System Buckboard Ashley National Forest

RFI #1 – Utility versus contractor electrical responsibility

Issue: C.6.0 assigns design/installation of overhead power to RMP and identifies poles and the meter pedestal/transformer as furnished and installed by RMP. The payment descriptions include transformer/phase converter, poles, overhead service, and customer-side service work. Some payment text expressly starts at the end of RMP responsibility, but a complete supply/install/payment boundary is not identified.

Requested clarification: Please issue a responsibility matrix identifying who designs, furnishes, installs, connects, and pays for each component under Items 2.06-2.09. Identify the utility/customer demarcation, utility extension and connection fees, and the contractor work to price under each item. Confirm whether utility-performed work is paid directly by the Owner or carried in the contractor bid.

Response: (Consolidated for RFI #1, #26, #35, #42, #47, and # 61)

1) Design – RMP will design overhead power, poles, and transformers to the demarcation point. Contractors shall provide all electrical design from the demarcation to end points.

2) Construction – It is at the contractor’s discretion whether the contractor pays RMP to construct the work up to the demarcation, or the contractor constructs the work to RMP standards. Payment will be as described in the Schedule of Items and “Section 01 02 51 - Measurement and Payment Supplement,” with allowance for more or less payment should the actual quantity (per RMP design) vary from the design quantity. Construction staking for power lines is also the Contractor’s responsibility.

3) Demarcation – Is located at the commonly understood weatherhead for overhead power or line-side lugs of the meter socket for underground power. Contractor is to install the meter panel unless otherwise required by RMP.

4) Extension/Connection Fees – Fees required by RMP are to be borne by the contractor and included in payment for Item 1.16 “Design-Build Electrical Operating System.”

5) Transformer Schedule Revision: The transformer line item is now stand-alone without phase converter and is to include only those transformers to be installed as part of the utility extension. If phase conversion or a transformer is required on the customer-side of the demarcation, that will be included in payment for Item 1.16 “Design-Build Electrical Operating System” or pump line items as appropriate.

6) Electrical load sheet required by RMP: The Government has not obtained a cost proposal from RMP, nor completed a load sheet. The load sheet can only be determined after a complete design of the electrical system. The load sheet and any other coordination with RMP will be included in payment for Item 1.16 “Design-Build Electrical Operating System.”

RFI #2 – Overlapping phase converter, VFD, wiring, and SCADA payment

Issue: The pump items include VFDs and related electrical work. Item 2.06 includes the phase converter, while Item 2.10 again includes the phase converter and pump VFDs. Meter-to-building service appears in multiple descriptions. Item 2.10 includes SCADA, Item 3.01 includes tank water-level communication, and Item 6.01 includes treatment SCADA not included elsewhere.

Requested clarification: Please allocate the phase converter, each pump VFD, feeders, service wiring, controls, tank instrumentation, SCADA hardware, integration, programming, and commissioning to specific bid items. Confirm that each component is paid once and identify the limits between Items 2.10, 3.01, and 6.01.

Response: See RFI #1 for additional related information.

1) Phase Conversion – The electrical design must establish the most economical location to place phase conversion. Phase conversion will be allocated to 1.16 “Design-Build Electrical Operating System,” unless incorporated into a VFD, in which case it will be allocated to a pump line item.

2) VFD – Will be allocated to the individual pumps.

3) Feeders, service wiring , and controls: – Unless specifically allocated, include in related work items.

4) Tank instrumentation: Include in 1.16 “Design-Build Electrical Operating System.”

5) SCADA hardware, integration, programming, and commissioning: Include all such work for Base Bid and Option 1 in 1.16 “Design-Build Electrical Operating System.” Include all such additional work for Option 4 in 5.01 “Design Build Replacement Treatment System.”

RFI #3 – Communication line description refers to power equipment

Issue: Item 2.09 describes service from a power pole/transformer to a meter and building panels, and works beyond RMP responsibility, rather than defining a communication installation. Plans identify Union Wireless as the communication designer. Treatment controls call for hard-wired phone, cellular, and internet access, while the operating paragraph uses phone hard line or cellular.

Requested clarification: Please replace the electrical wording in Item 2.09 with the intended communication scope. Confirm Union Wireless versus contractor furnishing/installation responsibilities, cable/media type, pole attachments, drops, terminations, equipment, and fees. Identify which remote-access methods must be provided and demonstrated and who pays ongoing service charges.

Response: (Consolidated for RFI #3, #35, #48, #53, and # 62)

1) Item Scope – The scope of the line item has been revised in Section 01 02 50 “Measurement and Payment.”

2) Design – Union Wireless (UW) has been contacted, but no design nor proposal has been initiated with UW. UW will design underground fiber-optic and associate utility boxes to the demarcation point. Contractors shall provide all communications design from the demarcation to end points.

3) Construction – It is at the contractor’s and UW’s discretion whether the contractor pays UW to construct the work up to the demarcation, or the contractor constructs the work to UW standards.

4) Demarcation – Is located at the communications junction box to be located on the exterior of the treatment plant building. Length of fiber optic extension is anticipated to be from the intersection of FR 009 and FR 010 to the treatment plant – about 900 linear-feet.

5) Extension/Connection Fees – Fees required by UW are to be borne by the contractor and included in payment for Item 1.15 “Communication Line Extension.”

6) Work by Contractor – Cable/media type, pole attachments, drops, terminations, and related equipment on the customer-side of the demarcation are to be designed, staked, and constructed by the contractor and included in payment for Item 1.16 “Design-Build Electrical Operating System.”

7) Remote Access – See specification 22 11 03 paragraph 2.4.A.2.n for required remote access requirements.

8) Service Charges – Upon acceptance of the work, all ongoing service charges will be paid by the government.

RFI #4a – Two pump quantities versus included backup pumps

Issue: The SOI lists 2 EA for each of the four pump items, but each payment description already includes a backup pump. The treatment specification explicitly describes an additional backup pump kept on the shelf for each pump supplied; it does not clearly resolve the other pump pay-item quantities.

Requested clarification: For each pump location, please state the number to install and the number to deliver as shelf spares. Confirm whether each 2 EA quantity means one installed pump plus one spare, or two complete pump assemblies each including another backup. Identify whether spare motors, VFDs, bases, and accessories are included and how the EA items are priced/measured.

Response: (Consolidated for RFI #4 and # 58)

1) Quantity Clarification: Schedule of items has been revised to indicate a unit quantity of 1 includes one installed pump plus a spare (which is not to be installed). This has been corrected for all pump items.

2) Correction to Measurement and Payment: Specification 01 02 50 paragraphs 1.5 C.1.a and 1.5 E.1.a (pumps now found under 1.5 B.6 and C.1) have been removed. Manholes for pumps will be under separate payment.

RFI #4b – Irrigation booster pump lacks a clear bid-item assignment

Issue: The storage site separately shows a Tiger Flow CD10-7 irrigation booster, a Grundfos UPS 32-160F treatment feed pump, and a Tiger Flow CD10-6 culinary booster. The SOI names treatment, pumphouse, intake, and culinary pumps but has no separately named irrigation booster. The treatment pump payment text describes culinary distribution service rather than feeding treatment.

Requested clarification: Please identify the bid item carrying the irrigation booster, VFD, controls, manhole, and any spare pump. Provide a location-to-pay-item pump schedule and correct the treatment pump service description so that all three storage-site pumps have an unambiguous scope and quantity.

Response: Schedule of Items and Specification 01 02 50 have been corrected to reflect the additional pump and its associated work.

RFI #5 – Pump manhole diameter, depth, top, and payment disagree

Issue: Item 2.18 calls for 48-inch manholes and a four-foot base/eccentric cone. Detail 3/C.8.5 shows a five-foot-diameter manhole, four-foot depth, and flat lid. Profiles show pump pipe inverts about 11.50 feet below rim at S783 and 9.97 feet below rim at S727. The treatment and culinary pump payment descriptions also include their manholes.

Requested clarification: Please issue a schedule for the three pump manholes with governing inside diameter, rim, pipe inverts, bottom elevation, access opening, lid type, and pump/VFD arrangement. Reconcile the four-foot depth detail with the profiles. Confirm whether these structures are paid under Item 2.18 or included in the pump items, without duplicate payment.

Response:

1) Diameter clarification: Schedule of Items and Specification 01 02 50 paragraphs 1.5 B.25 and 1.5 C.4 (old paragraph 1.5 C.18) have been corrected to reflect a 60” diameter manhole as shown on Sheet C.8.5 Detail 3. Where height is available, an eccentric cone is optional.

2) Depth clarification: Some pumps will not fit in a 48” high manhole. Actual schedule of manhole dimensions is not warranted. However, the detail 3 shall be revised to reflect a 6-foot minimum height of 60” barrel and a maximum 30” height of rim above the flat top. Irrigation pump manhole lid may sit slightly above ground, but that is OK.

3) Payment: Manholes will be paid for separately from pumps. See RFI #4a.

RFI #6 – Cofferdam design water elevation and construction conditions

Issue: The payment clause requires a cofferdam capable of holding back 20 feet of lake water. The plans show a steep alignment and a bulkhead surface elevation of 5972, but the 20-foot criterion is not tied to a specified construction water-surface elevation. The permit section says the Forest Service initiated Section 404 permit and the contractor must comply.

Requested clarification: Please provide the governing construction/design lake elevations, required freeboard and overtopping criteria, permitted in-water work window, applicable permit conditions, and available geotechnical data. Confirm what surface the 20-foot depth is measured from and how changed lake conditions affecting the required cofferdam will be addressed.

Response: (Consolidated for RFI #6, #24, #45, and #64)

1) Cofferdam water depth: The 20-foot depth refers to a maximum above the intake on the lakebed. Note that profile sheet C.3.15 has the pipeline surfacing and bulkhead being installed approximately 20’ in elevation above the intake. This assumes pipe and equipment placed on the lakebed surface can be lowered into place without dewatering. No additional payment will be made to place end of cofferdam to additional depth.

2) Reservoir elevation: Reservoir is anticipated to be held to 5990 or lower in Spring of 2027 and continue to be stable or drop throughout the summer and fall 2027. Bids should be based on that elevation and to be done during 2027. Design of cofferdam shall assume an elevation of 6010 as a precaution in case water levels rise unexpectedly and additional wall height must be added through contract modification.

3) USACE permitting: Permits are still in process. If permits are obtained prior to bid closure, they will be shared. Bids shall be based on reasonably expected conditions (erosion control, dewatering sediment capture, materials and equipment cleaned and free noxious aquatic species, turbidity testing, etc.). If unusual construction practices are required by the USACE, modifications will be considered.

4) Bathymetric Data: Underwater contours are from a bathymetric survey performed by the Bureau of Reclamation in 2024. These only reflect reasonably current surface elevations, and no data is available for depth of sediment, nor has any subsurface investigation been performed.

RFI #7 – Bid Date

Issue: With this being a design build project. We need more time to put together the bid.

Requested Clarification: Would the bid date be able to be pushed back?

Please see amendment 0003 for the revised quote due date.

RFI #8 – Backup power required without a defined bid basis

Issue: The design-build electrical item explicitly requires backup power for the distribution system pump per WYDEQ standards. The specifications include transfer switches, but the reviewed package does not define a project-specific backup-power configuration, fuel, autonomy, or equipment/site arrangement. Electrical design is deferred to the contractor.

Requested clarification: Please define the Owner's required backup-power performance and physical scope for bidding: loads to serve, installed versus portable source, fuel/source type, required operating duration, transfer arrangement, location, pad/enclosure, and testing. Confirm which design choices are delegated and whether all related civil work is included in Item 2.10.

Response: (Consolidated for RFI #8 and a portion of #63) Section 01 02 50, paragraph 1.5 B.16 is corrected to provide additional information. A permanent on-site propane-fueled generator will be required, and it must operate a minimum of 24 hours without refueling. All other parameters shall be included in the design of the electrical system.

RFI #9 – Concrete Bulkhead

Issue: Drawing C.3.14 shows keynote 15 to install the concrete bulkhead per detail 1/C.8.2 at roughly station 64+10 and another one at station 64+50. Sheet C.3.15 shows keynote 15 for the concrete bulkhead at roughly station 64+60 which would be outside of the coffer dam.

Requested Clarification: Please clarify whether one or two concrete bulkheads are needed and whether the concrete bulkhead will be located within the coffer dam.

Response: Only one bulkhead is required. Sheet C.3.14 contains errors in placement along the centerline. Use Sheet C.3.15 for a general location of the bulkhead at 64+60. The cofferdam must extend a reasonable working distance out from the bulkhead such that the concrete may be placed on dewatered ground. Because of a lower reservoir level, extending the cofferdam to meet this requirement should not exceed the bid quantity.

RFI #10 - It looks like the plans have submittals for a lot of items and the measurement and payment mentions installing but does not mention furnishing the material. Will pipe, fittings, pumps, etc. be supplied by contractor or furnished by owner?

Response: Contractor must furnish and install all materials. Specification Section 01 02 50, Paragraph 1.4.A states: "Payment for each Bid item includes full compensation for all required labor, materials, products, tools, equipment, manufacturing, transportation, services and incidentals; application or installation..." No owner-furnished materials are provided unless specifically indicated as such.

RFI #11 - Section 22 11 03, Water Treatment System Rehabilitation, requires rehabilitation and upgrade of the existing packaged water treatment plant to a 40 GPM system. The specification states that the final system shall continue to treat water using coagulation, flocculation, clarification, filtration, and disinfection, and specifically identifies alum/polymer chemical feed and post-chlorination.

During development of the design-build treatment system, our treatment equipment supplier has requested clarification regarding the required treatment process and available source-water quality information.

Please clarify the following:

1. Please provide the most recent available raw-water analysis for the Flaming Gorge Reservoir source, including, if available, turbidity, TDS, hardness, alkalinity, pH, nitrates/nitrites, iron, manganese, metals, microbiological data, and other regulated constituents used in establishing the treatment requirements.

Response 1: A recent representative sample from the current intake is attached to this document. However, raw water TDS varies greatly and one purpose for this project is to draw from a more consistent source above the sediment and below the influence of algal growth. Some other constituents may change after the intake relocation. Test results are provided for reference only and not to be used for final treatment plant design.

2. Is the treatment process specifically required to retain coagulation, flocculation, clarification, filtration, and chemical feed using alum/polymer, as stated in Section 22 11 03, or may the design-build treatment-system supplier propose an alternate treatment process provided the system demonstrates compliance with all Wyoming DEQ, EPA, capacity, turbidity, pathogenremoval/inactivation, monitoring, and finished-water requirements?

Response 2: For bidding purposes, treatment process must remain as specified. Alternatives may be discussed with the successful bidder and considered if there is shared cost savings.

3. Would an alternate treatment train utilizing self-cleaning prefiltration, high-efficiency cartridge filtration, UV disinfection, and final chlorine disinfection/residual be acceptable for consideration if the treatment-system designer demonstrates that it meets all applicable performance and regulatory requirements?

Response 3: For bidding purposes, treatment process must remain as specified. Alternatives may be discussed with the successful bidder and considered if there is shared cost savings.

4. Is reverse osmosis (RO) required or anticipated as part of the treatment system? If so, please identify the source-water constituent(s) or finished-water criteria requiring RO treatment.

Response 4: For bidding purposes, treatment process must remain as specified. Reverse Osmosis may be discussed with the successful bidder and considered if there is shared cost savings.

5. Please confirm whether post-chlorination and maintenance of a chlorine residual in the storage and distribution system remain mandatory regardless of the upstream treatment/disinfection technology proposed.

Response 5: Section 22 11 03, Paragraph 2.4 A.2.b.(ii) states post-chlorination is required to maintain disinfectant residual in the distribution system.

RFI #12 - What is involved with the removal of the existing pump barge? Capping pipes, etc.

Response: Sheet C.0.2 provides general “Removal and Disposal Notes” governing abandoned utility lines. Specification Section 02 41 00, Paragraph 3.6 provides additional details. A clarifying section has been added to that specification covering electrical demolition which includes pulling out all conductors within abandoned conduit. In the case of the barge, removal will include all utilities laid on the ground up to and including from daylight back to a point 12” below grade. Also, any associated bulkheads shall be removed per Section 02 41 00, Paragraph 3.5.F. Sheet C.1.4 (Keynote 04) states "Remove Ex. Intake Pump Barge." It will not be salvaged.

RFI #13 - Clearing and grubbing. Can it stay on-site, or does it need to be hauled off?

Response: Sheet C.0.2 General Note 3 states, “All material designated by the CO/COR as unsuitable for future use on site shall be disposed of off-site." Generally, this will be the case. However, small woody debris may be suitable for use on site as erosion control and protective cover to help with natural reseeding. The Contractor has options to chip or cut larger woody debris to make it suitable. The CO approves alternative on-site disposal plans. Large debris such as logs and root balls must be removed in accordance Section 02 41 00, Paragraph 3.8.B and C.

RFI #14 - Native access road requirements. Is it assumed that it will be a balance cut/fill? What about culverts needed at drainage/gulch crossings?

Response: Sheet C.8.1 (Detail 1) and Specification Section 01 02 50 paragraph 1.5 B.32 “Waterline Service Road” cover this work. While “installation of culverts,” is stated in the work description, those will only be needed if no other option is available to control drainage and vertical curvature across a drainage. The Contractor is given great latitude to field-fit a road that controls drainage while minimizing cut and fill. A rule-of-thumb will be that If the Contractor builds it suitable to get construction trucks in, it will be suitable to remain as a maintenance road.

RFI #15 - Can we use reservoir water for construction operations/dust control?

Response: Use of reservoir water will be permitted subject to state water rights/permits. Specification Section 01 41 26, Paragraph 1.3 A.1 and 2 requires Contractor to apply for and pay for any required permits. Therefore, the Contractor must coordinate any reservoir water use with the Bureau of Reclamation, the Wyoming State Engineer’s Office, and any other agencies as may be necessary.

RFI #16 - Is there a geotechnical report available?

Response: A Geotechnical Report has not been made for this site. Bidders must rely on surface observations and local knowledge.

RFI #17 - When constructing the coffer dam, what if we hit bedrock before the design depth?

Response: Specification Section 01 02 50, Paragraph 1.5 B.17.c states payment includes "All excavation, backfill, compaction, rock excavation, … to install the cofferdam." No additional payment will be made on the cofferdam if rock is encountered Contractor should work with a geotechnical consultant to address possible shallow bedrock refusal.

RFI #18 - Is the coffer dam temporary, and does it need to be removed after construction?

Response: Yes, it is temporary and must be removed. Specification Section 01 02 50, Paragraph C.17.f expressly mandates, "Removal of the cofferdam components at the end of the construction activities within the cofferdam well." Also see Sheet C.6.0, keynote 06.

RFI #19 - What Is the material import/export item intended for? Trench backfill, etc. Are we to assume native backfill for most of the project?

Response: Native excavated material meeting specifications is intended for general trench backfill per Specifications Section 31 23 00, Paragraph 2.4 A.3. Additionally, Specification Section 01 02 50, paragraph 1.5 B.5 states, "This item shall be used only for material the Contracting Officer deems unsuitable for use in excavation and grading work on the site (emphasis added)." Therefore, Import/Export material is a contingency item to be used to replace any native earthwork or trenching fills, and only with Contracting Officer approval.

RFI #20 - Any other requirements in the sensitive area other than a silt fence?

Response: Though silt fence is called out by the designers, any highly visible barrier is acceptable. The purpose of the fence is not to protect from sediment, but rather to prevent accidental encroachment of construction traffic or personnel into the area. Alternative fencing may be proposed to the Contracting Officer such as orange safety netting and it must fully encircle the area. USFS personnel will mark this boundary, and it does not have to be surveyed in. Coordinate marking with the CO and local Forest staff.

RFI #21 - Can 2-inch poly be used in place of 2-inch galvanized pipe?

Response: No. Galvanized steel pipe is required where noted for purposes of rigidity and ease of ongoing maintenance.

RFI #22 - What is to be done with the abandonment of the existing water tower?

Response: Water tower is to be abandoned but not removed. Refer to Sheet C.1.1, Keynote 01, "Ex. water tower to be abandoned," and Specification Section 22 11 03, Paragraph 1.2 C.1 stating the 150,000-gallon elevated tower tank is being abandoned. An addendum is provided to clarify the disposition of all abandoned items.

RFI #23 - Removal of the existing 10,000-gallon underground fiberglass water tank. Where is it being salvaged to?

Response: It will be placed at a location within the work area at a location coordinated with the Contracting Officer. Removal from the work area will be carried out by the Forest Service.

RFI #24 - What is the intent of the coffer dam with the statement that it needs to hold back 20" of lake water? From what elevation? What is the expected elevation and time frame to install the coffer dam and intake structure. What is the lowest anticipated water level?

Response: See RFI #6.

RFI #25 - Due to the potential low water level, will the cofferdam need to be shifted further East into the lake?

Response: No. This intake has been designed to work even to the lowest possible depth as set forth by the Bureau of Reclamation operations planning.

RFI #26 - The contract drawings indicate that the overhead power service to the new pump house is to be designed and installed by Rocky Mountain Power (RMP), and that the new power poles, meter pedestal, and transformer are to be furnished and installed by RMP. The Schedule of Items includes 11 electrical power poles and approximately 2,856 LF of overhead electrical service. Guardian contacted the RMP representative identified on the drawings. RMP advised that they have not received the completed project load sheet necessary to determine the required transformer size, conductor size, service requirements, or final cost of the utility extension. RMP also advised that only 120/240V single-phase utility power is available at the site. Please provide the completed electrical load information/load sheet used for coordination with RMP and confirm whether the Government/Engineer has obtained an RMP design and cost proposal for the utility extension. Please also clarify whether bidders are required to include all RMP utility charges associated with the approximately 2,856 LF overhead extension, 11 power poles, transformer, and meter pedestal in their bid. If so, please provide the RMP design/budget or other bidding basis that all offerors are to use. Additionally, please identify the intended point of demarcation between RMP's scope and the Contractor's electrical scope.

Response: See RFI #1.

RFI #27 – C.3.13 mentions a Phase converter being needing to be designed. Can 1ph pumps be selected to mitigate the need for the converter? Looks like the largest one is 5.12hp which they do make in 1ph. RMP requires anything over 3hp to be reviewed before a service will be approved.

Response: No. Long-term benefits of VFD-controlled 3-phase pumps outweigh short-term savings.

RFI #28 – Is there an existing electrical service near by the raw water storage pump shown on E.5.18?

Response: Yes. See Sheet C.1.3, keynote 23, showing power poles and overhead power near the treatment plant.

RFI #29 – Is the Pump control box pulling 20 amps or needs a 20-amp circuit provided to it at locations 7 & 25 on sheet C.6.1

Response: The box and its components are rated to handle a minimum of 20 amps of motor current. This may need to sized up depending on the design prepared by the Contractor’s electrical engineer.

RFI #30 – Is there a preferred color for the CXT building?

Response: Color is to be selected by the Contracting Officer from standard colors provided per Section 03 41 43, Paragraph 1.3.C. Roof and wall colors will likely be same brown shades as existing toilet buildings located at the Marina parking lot and boat ramp.

RFI #31 - Can we use embankment material available on-site to build the temporary cofferdam instead of the material shown in the plans and specs? It would only be in place during the in-water work. Afterward, we would remove it completely and restore the area to its original condition. Using on-site material would cut down on hauling and cost. If this is allowed, please let us know if there are any specific material or design requirements we need to follow.

Response: Sheet pile construction per Detail 3/C.8.2 is mandatory unless an alternate method is submitted and approved by USFS and USACE. Sediment from native material fill would likely violate expectations of the USACE permit. Bid as is. If an alternate method saves money and can be approved, a modification would be considered that shares in the savings.

RFI #32 –What does RWC and RWC FL stand for as descriptions in the control table on Sheet C1.0?

Response: Both refer to “Rebar With Cap.” The FL may refer to being driven flush with the ground, but the meaning is uncertain.

RFI #33 –Does 15' Native Surface Service Road need staked?

Response: Yes. Specification Section 02 21 15, Paragraph 3.5 B requires survey staking for all alignments. However, because the road will largely be field fit to conform to the ground contours, the road may be staked at a proposed location for approval by the Contracting Officer rather than the design location. Note that the road between Station 46+00 and 58+00 is required to be in the position shown for purposes of pulling and installing the submersible pump.

RFI #34 –Will cad files be provided to successful bidder?

Response: Yes. Drawings including control points and proposed improvements will be provided to the successful Contractor – enough information to create a stakeout of new facilities. A full drawing set will not be provided due to file transfer size and inherent x-ref errors.

RFI #35 –Who is responsible for staking and constructing power and communication lines?

Response: Contractor. See RFIs #1 and #3.

RFI #36 - What plan sheets show items for Schedule G?

Response: Culinary 1 waterline from valve at station 19+55 to line stub and drain at 41+65. This is shown on Sheets C.3.3 through C.3.8. A supplemental plan sheet C.2.2 is attached providing more detail on options.

RFI #37 - What is the depth of the asphalt that needs to be patched?

Response: Existing depth of asphalt to be patched varies. Rather than try to match depth, use the 3” depth shown on Sheet C.8.1 (Detail 2) and Sheet C.8.5 (Detail 1).

RFI #38 - What is the asphalt mix design for this project? The bid documents say to use PG 64-34 oil in one spot, but in the Asphalt section of the Specifications it says to use AC-20 oil. Which is correct?

Response: The intent is to use a commonly found asphalt mix in the area rather than create a new mix for such a small amount of patching. Therefore, a mix previously approved by the Wyoming DOT would be practical. WYDOT typically uses PG 64-34 binder in the environment found at Buckboard Marina. AC-20 is not suitable for the low temperatures to be encountered and so would not be approved. Other readily available ½” aggregate hot mixes approved for use by local governments may be used with approval of the Contracting Officer. An addendum is attached.

RFI #39 - In the Specifications attachment of the Bid Documents, In measurement and Payment, It states that the Asphalt Repair work will be measured in SY, but the Bid Schedule shows it as SF, which is correct?

Response: Measurement in square-feet is correct. An addendum is attached.

RFI #40 – Please provide a clarification of all design aspects of this project the contractor is to include and provide enough detail for each so that we can provide what is being expected from the design effort.

Response: Design aspects are most easily divided into 4 components. Components 1 and 2 are combined into one bid item.

1) Electrical Design: Design the complete electrical for base bid and option 1. With the exception of amendments associated with this RFI response package, Specification Section 01 02 50, paragraph 1.5 B.16 details the expectations for the design package. Additionally, the design shall coordinate with all Division 26 Chapters of the Specifications. The Electrical Design Engineer has latitude on most aspects of the design to produce the most cost-effective installation by managing power conductor size with common transformer and phase conversion locations versus independent locations at the pumps, as well as finding the most cost-effective solution for locating the electrical demarcation(s). However, the 3-phase pump selections are established and will not be modified. Materials specified in the design must meet the domestic manufacturing requirements of this project. Reference other RFIs regarding coordination with RMP design.

2) Communications/SCADA design: Design the complete Communications/SCADA for base bid and option 1. This portion does not include treatment plant SCADA. With the exception of amendments associated with this RFI response package, Specification Section 01 02 50, paragraph 1.5 B.16 details the expectations for the design package. The Communication Designer has latitude on most aspects of the design to produce the most cost-effective installation including best location for demarcation(s). The location of the main control system shall be located in the treatment plant but will remain isolated from the existing treatment plant systems unless or until Option 4 work “Upgrade Treatment Plant” is performed. Materials specified in the design must meet the domestic manufacturing requirements of this project. Reference other RFIs regarding coordination with Union Wireless design.

3) Cofferdam design: Design the complete cofferdam installation. Though specification require a geotechnical engineer, a structural engineer is also acceptable. In both cases, the engineer must have cross knowledge of both disciplines or design support from the other discipline. Except for amendments associated with this RFI response package, Specification Section 01 02 50, paragraph 1.5 B.17 details the expectations for the design package. The Cofferdam Design Engineer has latitude on most aspects of the design to produce the most cost-effective installation. A geotechnical study should be performed to assess seepage and required embedment depth to resist water forces. Materials specified in the design must meet the domestic manufacturing requirements of this project. Generally, the design shall assess, but not be limited to, the following geotechnical and structural factors:

a. Soil strength and stiffness

b. Sheet pile embedment depth

c. Groundwater and seepage conditions

d. Base heave and piping resistance

e. Stability against overturning and sliding

f. Scour and erosion effects

g. Designing sheet piles as structural members

h. Analyzing walers, struts, braces, and tie rods

i. Checking member stresses and deflections

j. Designing connections and temporary framing

k. Verifying structural capacity under construction loads

4) Water Treatment Plant Upgrade: This is recognized as a highly specialized design element that generally requires the manufacturer of a package treatment plant to also design it. Design the complete plant installation within the confines of the existing CMU building. With the exception of amendments associated with this RFI response package, Specification Section 01 02 50, paragraph 1.5 F.1, and the entirety of Specification Section 22 11 03 details the expectations for the design package. The Design Engineer has latitude on most aspects of the design to produce the most cost-effective installation. Electrical components will likely remain as currently exist, but any required changes should be included in these plans separate from base bid design work. Communications/SCADA specific to the plant shall be included in this design separate from the base bid design, however final treatment plant SCADA must work seamlessly with the intake and distribution SCADA. Materials specified in the design must meet the domestic manufacturing requirements of this project.

RFI #41 – Please provide a contact for Rocky Mountain Power with his/her contact information. This is a huge company, and we may not be able to find the right person who knows about this project.

Response: Contact information is provided on Sheet C.0.2 (Utility Contacts). Erin Boling has been confirmed as the correct contact as of this date.

RFI #42 - Please clarify that Rocky Mountain Power and Costs will be by Rocky Mountain Power and are not to be included in this proposal.

Response: See RFI #1.

RFI #43 – Please clarify who the communications provider is (company and contact information).

Response: Contact information is incorrect on Sheet C.0.2 (Utility Contacts). All West Communications is the correct provider. Prospective bidders will be notified of a contact and phone number when they comes available."

RFI #44 – have these drawings and specification been given to Rocky Mountain Power for their review or when we provide it to them will it be the first time they get to see and know about this project?

Response: Drawings and specifications have not been provided as of this date. But we have made contact and provided the attached tentative load sheet. This load sheet is tentative and must be updated upon completing the electrical design.

RFI #45 – Please clarify the parameters for the design of the cofferdam so this can be priced and designed according to the provided parameters.

Response: See RFI #6 and #40.

RFI #46 – Please clarify asphalt paved roads that need to be repaired with asphalt and gravel roads that will need gravel repair.

Response: All road crossings identified on the plans as requiring repair are paved. No crossings are gravel. Some unidentified crossings are native surface and will remain as such.

RFI #47 – Note 2 on sheet C6.0 states Rocky Mountain Power will design and install overhead power. Please confirm.

Response: See RFI #1.

RFI #48 - Please confirm the Overhead communications line from the treatment plans to the pump house will be done by Union Wireless.

Response: See RFI #3.

RFI #49 – Will other manufactures for the concrete pump house be considered?

Response: Yes. The CXT model identified on Sheet C.6.1 (Keynote 8) is a product to be met when submitting for approval as an alternative equal unit. Specification Section 03 41 43, Paragraph 1.4 A provides quality assurance guidance for alternative manufacturers. Alternate precast products must also provide equivalent structural, architectural, and dimensional specifications.

RFI #50 - Who scope of work is the tracer/utility scope fall under?

Response: Tracer wire is under the same scope as the pipeline it is attached to. All plastic pipe is to include tracer wire attached to it including HDPE culinary water, raw water, and drain pipe. Access points are incidental to the work.

RFI #51 - C.8.5 shows a detail for a inline booster pump, where is this located and what is it size/rating?

Response: This is the irrigation pump shown on Sheets C.7.0 and C.7.1 (keynote 28), and on Sheet C.5.18 (keynote 33). Curve details are provided on Sheet C.8.7 Detail 2. See RFI #4b for additional information.

RFI #52 - Does the project have federal funding?

(b) The offeror ☐ has ☐ does not have current active Federal contracts and grants with total value greater than $10,000,000.

This question is referring to if the offeror has or does not have any Federal contracts or grants with a total value of Ten Million.

RFI #53 - What is the scope of work for the Comm?

Response: See RFI #3.

RFI #54 - Is there additional information such as vendor or specification on RTU panel for the new pumps?

Response: Section 01 02 50, Paragraph 1.5 B.16.e and 1.5 F.1.d and Section 22 11 03, Paragraph 2.4.A.2.n define SCADA requirements (full-color touchscreen, remote phone/cellular access, data logging). Though additional SCADA will need to be installed with Option 4 (Upgrade Treatment Plant), all SCADA will be controlled from the treatment plant, and therefore, must meet the requirements of 22 11 03. SCADA hardware vendor is open to the design-build contractor subject to owner review. SCADA must operate independent of the USDA/Forest Service network.

RFI #55 - Material Import/Export Units The pricing schedule lists 1,944 CY, while Section 01 02 50 specifies measurement and payment by the ton of imported soil. Please confirm the governing bid/payment unit and provide a corrected quantity if tons are intended.

Response: Measurement in cubic-yards is correct. An addendum is attached.

RFI #56 - Asphalt Restoration Units and Base The pricing schedule lists 3,015 SF, while Section 01 02 50 specifies measurement and payment by square yard. Please confirm the governing unit. Detail 2/C.8.1 shows 8 inches of untreated base beneath 3 inches of asphalt, while the payment description references up to 4 inches of base. Please reconcile this language and confirm which bid item includes the full required base.

Response: Measurement in square-feet is correct. Details show the correct 8-inches of base. An addendum is attached.

RFI #57 - Treatment Equipment and Existing Tanks Section 22 11 03 lists the aluminum treatment housing for removal in Paragraph 2.1.A.2.e but requires modifications to the existing housing in Paragraph 2.4.A.2.m. Please confirm replacement versus rehabilitation. Paragraph 1.2.C describes abandonment of the existing 150,000-gallon storage tower used for finished water and backwash, while Paragraph 2.2.A.2 calls for reuse of exterior storage/backwash components. Please identify which components must be reused and confirm the intended backwash-water source.

Response:

1) Aluminum Treatment Housing: The housing is to be removed. An addendum is attached.

2) Existing Backwash Tank: The 150,000-gallon tank will be removed from service upon completion of the new underground finish water tanks. Finish water and pressure required for backwash of the treatment system (existing or new) will be replaced by the new storage tanks and distribution pump (keynote item #37 on Sheet C.7.1). If Option 4 work “Upgrade Treatment Plant” is delayed or not awarded, the backflush supply line must remain connected to the distribution system as part of the Option 2 work “Underground Storage Tanks” and Option 3 work “Looped Water Distribution System.” An addendum is attached.

RFI #58 - Installed Pumps and Spares Schedules B and D list quantities of two for several pump types, while the payment descriptions also include backup pumps. Please confirm the installed and spare quantities for each pump type, whether spares are included in the scheduled quantities, and whether backups are installed standby units or shelf spares.

Response: See RFI #4.

RFI #59 - Submersible Pump Controls Section 22 11 23 requires a reduced-voltage soft starter, while the submersible-pump payment description includes a VFD. Please confirm which requirement governs.

Response: Variable frequency drives are desired for all pumps. An addendum is attached.

RFI #60a - Intake Carrier-Pipe Diameter The intake plans and schedule identify a 3-inch carrier pipe inside the 8-inch casing, while Detail 1/C.8.2 labels the carrier pipe as 1-1/2 inches. Please confirm the required diameter.

Response: Detail 1 is in error. The inside pipe is 3-inch as found elsewhere in the plans. An addendum is attached.

RFI #60b - Water Meter Model The plan keynotes specify a 2-inch Badger M170, while Detail C.8.8 and Section 33 11 15 specify M120. Please confirm the required model.

Response: Detail and Specification are in error. The meters are generally the same product, but the M120 is not available for a 2-inch application. The M170 or equal must be used. An addendum is attached.

RFI #61 - Rocky Mountain Power Scope and Charges The plans assign pole and meter pedestal/transformer installation to Rocky Mountain Power, while Schedule B includes related bid items. Please confirm which utility charges the contractor must include, the utility/contractor work boundary, and how those costs should be allocated among the bid items. Please provide any available utility proposal or service design.

Response: See RFI #1.

RFI #62 - Overhead Communications The plans assign route design to Union Wireless, but the communications payment description contains electrical-service language. Please clarify the contractor's communications installation scope, required communication medium, pole/support responsibility, and connection charges. Please provide any available Union Wireless proposal or design.

Response: See RFI #3.

RFI #63 - Controls and Backup Power Please identify any existing owner SCADA platform or mandatory equipment, software, or communication standards the new system must support. We understand backup power is required for the distribution-system pump under WYDEQ standards. Please identify any additional owner requirements for loads served, operating duration, fuel type, or permanent versus portable equipment.

1) SCADA hardware vendor is open to the design-build contractor subject to owner review. SCADA must operate independent of the USDA/Forest Service network. Question for CO: What requirements might we not be meeting in terms of IT purchasing requirements? So long as what we get operates independent of the network, are we in the clear? Or do we need additional review, or do additional specifications need to be added?

2) See RFI #8 for generator requirements.

Response: No additional requirements so long as the software does not interact with the USDA network.

RFI #64 - Cofferdam Information and Permit Conditions We understand the contractor must provide Wyoming-stamped cofferdam engineering for a 20-foot water depth. Please provide any available subsurface investigation and applicable reservoir operating-level information. Please also provide the status and conditions of the Forest Service-initiated USACE Section 404 permit, including any in-water work windows or dewatering-discharge restrictions.

Response: See RFI #6.

RFI #65 - Service Shutdowns and Remaining Bid Documents Please identify allowable water-service shutdown periods and any temporary-service requirements, including facilities and minimum demands to be served. Please forward the complete SF1442, current amendments, and issued RFI responses so we can verify the completion period and any additional seasonal, access, staging, or marina-operation restrictions.

Response: A supplemental specification section is provided detailing Project Conditions as requested. The complete solicitation package can be found at Sam.gov.

RFI #66 - We are currently coordinating with Union Wireless regarding communications between the existing water treatment plant and the proposed pump house.

Union Wireless has asked for clarification on the following items:

1. What specific communications requirements are needed to support the SCADA/RTU system and remote monitoring?

2. Can the SCADA equipment communicate over a standard Ethernet connection, or is a dedicated fiber connection required?

3. Are there any specific bandwidth, latency, network security, or connectivity requirements?

4. Would underground fiber be acceptable in place of the overhead communications line currently shown in the drawings?

5. Are there any specific communication protocols or equipment requirements Union Wireless needs to accommodate?

Please provide any available SCADA/RTU specifications or anticipated communications requirements so we can coordinate the appropriate service with Union Wireless.

Response: An amendment is attached for further clarification. Though communications infrastructure is required outside of Option 4 work “Upgrade Treatment Plant”, the communications/SCADA portion of Section 22 11 03 “Water Treatment System Rehabilitation” will apply to all communications/SCADA. General direction is:

1) Refer to Section 01 02 50, Paragraph 1.5 B.16.e and Section 22 11 03, Paragraphs 2.4 A.2.n.(x)–(xiii).

2) Section 26 29 23, Paragraph 2.8 A.7 describes the requirements for the several communications options to be supported in the pump VFD. Any of those options are available at the SCADA designer’s discretion.

3) Low latency and high availability is desired to support automatic shutdown on high tank levels, real-time alarm reporting, and remote access. For security reasons, the system shall operate entirely independent of the USDA/Forest Service intranet. Otherwise, standard commercial encryption/VPN security over IP should be provided for remote-facing internet/cellular connection.

4) The attached amendment describes a revision to use point-to-point wireless communication between the intake pumphouse and the treatment plant. Overhead ethernet is eliminated.

5) Section 26 29 23, Paragraph 2.8 A.7 describes the requirements for the several communications options to be supported in the pump VFD. Added Paragraph 2.10 provides additional requirements.