B08_Att_01_140P8426Q0079_Specs.pdf

Oregon Caves National Monument & Preserve PMIS 244479 Replace Turbidity Meters at Lake Creek Water Treatment Plant

DIVISION 01 – GENERAL REQUIREMENTS

SECTION 01 10 00 – DIVISION 1 SHORT FORM GENERAL REQUIREMENTS

PART 1 – GENERAL

ITEM 1 – DESCRIPTION OF WORK

1.1 Background

The Lake Creek Raw Water Treatment Plant at Oregon Caves National Monument & Preserve (ORCA) provides potable water to critical park infrastructure including staff housing, the Visitor Center, and cave tour operations. The system is regulated under the EPA Safe Drinking Water Act and must comply with 40 CFR 141 Subpart H – Surface Water Treatment Rule (SWTR).

The existing Hach 1720D turbidity meters have exceeded their service life and present reliability risks. Turbidity monitoring is a critical control parameter used to verify filtration effectiveness and ensure safe drinking water. Failure of this instrumentation could result in undetected water quality issues and regulatory non-compliance.

This project replaces outdated turbidity monitoring equipment with modern, EPA-compliant instrumentation to ensure operational reliability, regulatory compliance, and protection of public health.

1.2 Work Covered by Contract Documents

Project Location:

Lake Creek Raw Water Treatment Plant, Oregon Caves National Monument & Preserve, Josephine County, Oregon. Refer to Appendix A – Site Logistics and Location Map.

CLIN Structure:

CLIN 1 – Mobilization/Demobilization CLIN 2 – Remove Meters & Valves CLIN 3 – Supply Meters & Components CLIN 4 – Install Meters & Components CLIN 5 – (Option) Year 1 Calibration & Certification CLIN 6 – (Option) Year 2 Calibration & Certification CLIN 7 – (Option) Year 3 Calibration & Certification

Scope of Work:

The Contractor shall furnish all labor, materials, tools, transportation, and supervision necessary to:

• Remove existing turbidity meters, valves, tubing, and fittings.

• Provide and install:

o Three (3) Hach TU5300sc turbidity meters:

One (1) with basic cleaning head Two (2) with self-cleaning head (one will not be installed and provided to park for backup part) o One (1) Hach SC4500 controller

• Provide electrical integration including:

o 120V power connection (verify field conditions) o 4–20 mA output and/or Modbus communication integration with existing system

• Install approximately twenty (20) linear feet of sample tubing, isolation valves, flow control valves, and fittings.

• Install isolation valves and a bypass/sample loop configuration to allow maintenance without system shutdown.

• Perform full system startup, calibration, and commissioning using NIST-traceable standards.

• Provide calibration documentation meeting EPA SWTR requirements.

• Provide O&M manuals, shop drawings, and training.

Optional Work:

Provide a 1- to 3-year Hach field service contract for quarterly calibration and certification in accordance with EPA SWTR requirements.

Period of Performance

Work shall be completed within 60 calendar days, inclusive of:

• Trail access limitations

• Manual transport of materials

• Shutdown coordination

ITEM 2 – EXISTING UTILITIES

2.1 Utility Coordination

Contractor shall coordinate with COR prior to any system interruption.

2.2 Protection

Contractor shall protect all existing piping, instrumentation, and controls.

2.3 Utility Interruptions

• Water shutdowns shall not exceed 2 hours.

• Submit a Water System Continuity Plan for contingency operations.

• Provide 48-hour notice prior to shutdown.

ITEM 3 – CONTRACTOR’S USE OF PREMISES

3.1 Conduct of Operations

Comply with all NPS regulations.

3.2 Site Access Constraints

• Site located approximately 0.2 miles via Big Tree Trail.

• All materials shall be transported by hand unless otherwise approved.

• No motorized or mechanized transport allowed without written approval.

3.3 Work Hours

8:00 AM – 5:00 PM unless approved otherwise.

3.4 Environmental Protection

• Protect vegetation and trails.

• Restore disturbed areas.

3.5 Storage and Staging

• Staging limited to COR-designated area shown on Appendix A.

ITEM 4 – COMMENCEMENT, PROSECUTION, AND COMPLETION

Contractor shall submit detailed schedule including:

• Mobilization

• Demolition

• Installation

• Shutdown coordination

• Commissioning

ITEM 5 – EXAMINATION OF THE SITE

Contractor responsible for understanding:

• Terrain

• Trail access

• System layout

ITEM 6 – ABBREVIATIONS AND STANDARDS

Work shall comply with:

• EPA 40 CFR 141 Subpart H (SWTR)

• OSHA 29 CFR 1926

• NFPA 70 (NEC)

• ANSI standards

• UL certification

• AWWA applicable standards

• Manufacturer requirements (Hach)

ITEM 7 – ACCIDENT PREVENTION

Contractor shall submit APP including:

• Trail hazards (slip/trip)

• Manual handling risks

• Remote emergency response planning

PPE shall comply with OSHA 1926 Subpart E.

ITEM 8 – PRECONSTRUCTION CONFERENCE

Mandatory meeting to address:

• Access logistics

• Shutdown sequencing

• Safety

ITEM 9 – SUBMITTALS

Submit:

• Product Data

• Shop Drawings

• Construction Schedule

• Schedule of Values

• APP

• Calibration certificates (NIST-traceable)

• O&M Manuals

ITEM 10 – TEMPORARY SERVICES

Contractor shall provide all required temporary utilities and equipment.

ITEM 11 – PROJECT CLOSEOUT

11.1 Deliverables

• Calibration certification

• As-built documentation

• O&M manuals

11.2 Final Inspection

Verify system operation and compliance.

11.3 Warranty

Minimum 1-year warranty.

PART 3 – EXECUTION

PHASE 1 – MOBILIZATION

• Transport materials via trail

• Protect environment

PHASE 2 – DEMOLITION

• Remove existing meters

• Dispose per EPA regulations

PHASE 3 – INSTALLATION

• Install meters and controller

• Install tubing, valves, bypass loop

• Ensure leak-free system

PHASE 4 – CALIBRATION

• Perform calibration using NIST standards

• Verify accuracy within acceptable NTU tolerance

PHASE 5 – TESTING

• Verify continuous readings

• Confirm system integration

PHASE 6 – TRAINING

• Provide hands-on training

• Deliver site-specific SOPs

PHASE 7 – CLOSEOUT

• Restore site

• Submit documentation

APPENDICES

Appendix A – Site Logistics and Location Map

END OF SECTION

Appendix A – Site Logistics and Location Map

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