Attachment_8_Kalaloch_Site_Visit_Q&A.pdf

RFP #140P8319R0001: Rehabilitate water plant, Kalaloch Olympic NP Attachment 8: Site Visit Notes

Site visit at Kalaloch water plant, April 3, 2019 The meeting was convened by Contract Specialist Sarah Welch at 10:00 am; she made brief introductory remarks noted below before Engineer Kerri Cook provided background information and led the group around the site. The site visit concluded at 11:15 am.

The list of attendees is appended to these notes.

• Nothing said today changes the terms, conditions, requirements, or specifications of the solicitation and eventual contract. All changes will be formalized and incorporated by formal written amendment(s) to the RFP and posted at FBO.

• Rod Roberson is the Contracting Officer for this project but is unable to participate today.

He is the source selection authority and signatory on the contract. He will be the primary point of contact April 16-30 while Sarah is on vacation.

• If you have questions after you leave, e-mail them to Sarah_Welch@nps.gov as soon as possible, but no later than FIVE calendar days prior to the due date. For efficiency, copy Kerri_Cook@nps.gov and Rod_Roberson@nps.gov.

• Remember to review the information in solicitation Sections L (Instructions to Offerors) and M (Evaluation) before submitting the proposal.

• Due date is May 3 at 10:00 am unless extended by amendment.

• We encourage you to e-mail the electronic Parts I and II of your proposal well in advance of the time it is due, since timeliness will be judged based on the time documents arrive in the designated government in-box (details are in Section L.2 5 and L.4). Part III must be submitted as an original paper document that is due prior to the solicitation closing date and exact time.

Background on Kalaloch Water Treatment Plant project

• Kalaloch Creek (surface water) is the current source for potable water throughout the Kalaloch developed area; NPS has no control over the watershed, which is actively logged under private ownership.

• In 2014, two groundwater wells were drilled and tested to provide a more reliable source.

Water quality met EPA’s primary but not secondary drinking water standards for iron and manganese.

• In 2015, NPS attempted a pilot test of the park’s preferred treatment alternative (two-stage water treatment process). This process could not meet regulatory Maximum Contaminant Levels (MCLs).

• In 2016, NPS conducted a second pilot test of coagulation/sedimentation/filtration technology using a unitized water treatment system marketed by Tonka Water that (after two attempts) was able to demonstrate successful removal of iron and manganese to consistently meet MCLs.

• In 2017, upgrades to the water distribution system and pump replacement were completed under a separate contract.

• The intent of this project is to complete Kalaloch water system upgrades by converting from a surface water to a groundwater treatment system and bring the entire operation of this year-round water system into compliance with Washington State Department of Health regulatory requirements.

Items of note for Kalaloch Water Treatment Plant project

• Nearby residential areas (NPS & Concession) were identified for the purpose of noise and acoustics management, and work conducted during the marbled murrelet nesting season (April 1 – September 23) creating above-ambient noise is restricted to occurring between the hours of 2 hours after sunrise to 2 hours before sunset.

• Note that the location of Kalaloch is approximately 50 miles from Aberdeen and will require additional zone pay for some labor classifications.

• Recycled asphalt pavement (RAP) is located at the NPS Sol Duc pit and may be used for structural fill except directly underneath the new building.

• Appendix A Submittal List is incomplete and does not contain all submittals identified in individual sections.

• Contractors are encouraged to check the availability of seasonal concrete pumping facilities based in Forks, WA when planning and scheduling work.

• The Packaged Water Treatment System (PWTS), specifically the Unitized Treatment System (UTS) manufactured by Tonka Water, was pilot tested by the NPS and accepted/approved by the Washington State Department of Health for use at Kalaloch;

any contractor wishing to pre-qualify manufacturers as alternate suppliers for this component needs to follow requirements in Section 44 41 13.

• Contractor is responsible for all bacteriological water testing associated with water system shutdowns that result in a loss of distribution system pressure below 20 psi. The nearest laboratory may be located in Port Angeles, WA (contractor to verify).

• Contractor is responsible for commissioning of Division 44 (Pollution Control Equipment) items and providing a commissioning authority (expected to be PWTS manufacturer’s trained representative).

Questions, Answers, Clarification

1. Will NPS housing be available?

NPS housing in Kalaloch may be available for rent during the off-season (October 1 – April 1). However, contractors should price their proposals as if no NPS housing is available for the duration of the project. If housing becomes available, an equitable adjustment will be negotiated at the time of availability.

2. Is there a specified depth for excavation of the backwash pond?

The intent in excavating the existing backwash pond is to remove all settled sludge as well as any material forming the shell of the pond so that structural backfill will not include any compressible material, thereby minimizing future settlement. Sheet C2 (Site Grading Plan) calls for a finished floor elevation of 45.52 feet for the concrete building slab. The current backwash pond perimeter is at approximately 42 feet elevation and was constructed to provide approximately 4 feet of pond depth. It is unclear from the original as-built drawings what material was used to construct the pond. Material will need to be excavated until native soil is reached, or until all compressible (organic) settled solids are removed and only non-compressible materials remain.

3. Are there as-built drawings for the existing water treatment facilities?

Yes, as-constructed record drawings prepared in 1973 provide details for the existing water treatment system and are provided as Attachment 6.

4. Can you make the well testing and development data available? Is there a soils report?

An April 2014 report titled Construction and Testing of Two Wells at Kalaloch, Olympic National Park provides details on well construction, testing, and development and is provided as Attachment 7. No additional physical data is available.

5. Will there be any covered storage available onsite for laydown of materials?

Yes, two open but covered bays of the vehicle storage shed adjacent to the maintenance shop will be made available for contractor’s use during the period of performance. Each bay is approximately 20 feet square with a concrete slab floor and CMU walls approximately 8’ in height.

6. Will the NPS do any utility locates, or is the Contractor responsible for hiring a private utility locate company?

Existing utility information has been included in the construction drawings to the best of our knowledge. The NPS will not provide any utility locating services; contractors should arrange for private locates prior to digging.

7. Do you have any information on the location of the Naval Tower cable in the vicinity of the water treatment plant?

The Naval Tower located at the north end of the fenced Kalaloch water treatment area is actively used and includes a cable that extends from the tower out to the Pacific Ocean.

This cable is above-ground (not buried) and traverses the forested area outside the perimeter of the fence. The Naval Tower, cable, and associated equipment must be protected from damage during construction but should otherwise have no impact on the project.

8. On electrical sheets E5.0 & E6.0, the drawings call for new Trane (Model UHEC-03- 1-B-0-0) unit heater(s). Is the unit heater required to be a Trane?

New unit heaters located inside the existing water treatment building must comply with Section 23 82 29 Unit Heaters. Paragraph 2.1 C. (Basis of Design Product) directs contractors to provide the product indicated on the drawings or a comparable product.

Nine different manufacturers are listed as acceptable alternatives.

9. Is it acceptable to schedule water service shutdowns at any time, or are there limitations?

As noted in Section 01 11 00 Summary of Work, Paragraph 1.7 C. Existing Utility Interruptions, the existing utility systems may be non-operational, when required, for a maximum of (4) consecutive hours. Shutdowns should be scheduled to occur mid-day (e.g. 10 am – 2 pm) and mid-week (Monday – Thursday) if possible. There are no limitations on the time of the year when water service shutdowns are scheduled; however, impacts and risks will be lesser if those outages are scheduled outside the peak visitation season, i.e. fall through spring.

10. On sheet E4.0, why does the one-line diagram call for a new utility meter on the line coming from the existing distribution panel when there is an existing utility meter between the panel and the transformer?

The existing distribution panel (MDP) provides power for all of the NPS facilities located around the water treatment plant. The purpose of providing the new utility meter is so the NPS can monitor power consumption of the new water treatment plant building and associated infrastructure (e.g. new sewage lift station) separately from the existing water treatment building and infrastructure. This is in accordance with NPS policy that all buildings are individually metered.

11. For the demolition phase, do you want all of the concrete associated with the clarifier and sand filters to be removed as well?

The existing water treatment building, filters, and clarifier are all constructed on top of the 100,000 gallon clearwell reservoir, which was cast in place. The concrete floor of the clarifier and filters is actually the cover for the clearwell. Therefore, no concrete integral to the clearwell structure shall be removed as part of the demolition phase, and demolition of the clarifier, filters, and filter enclosure shall be completed carefully to ensure there is no damage to the concrete clearwell located underneath these components.

12. Clarification: “Bid Options” 1, 2, and 3 in drawings are called Options A, B, and C in price schedule and Attachment 1.