Atch_2_SOW.pdf

Replace Heating Pumps and Associated Hardware and Maintain Boilers at Kozlowski Trading Post at Pecos National Historical Park

PART 1 – GENERAL

1.1 Background:

The project involves the removal and replacement of four pumps for heating system at Kozlowski Trading Post at Pecos National Historical Park. Pumps requiring replacement are:

(1) x Grundfos MAGNA3 40-180 F 216, (2) x Grundfos Type UPML 25-104, and (1) x Bell & Gossett PL-30B.

Flush and descale entire heating system and condition water in heating system with manufacture recommended percentage of glycol to ensure proper lubrication, corrosion prevention and freeze protection. Descaling to be performed with manufacturer recommended descaling solution and may require the installation of a bypass/shut-off valve on each boiler.

Install one high auto bleed into the system to ensure excess air escapes. Location of auto bleed to be determined onsite with National Park Service representative.

Annual maintenance to be performed on two Lochinvar Boilers model WHB155N. Annual maintenance to follow manufacturers recommendations. Annual maintenance has not been completed in five years and to include replacement of heat exchangers, flame sensors, ignition igniters and new gaskets. Replacement of temperature/pressure relief valves on each boiler.

1.2 Work Covered by the Contract Documents:

• Project Location: Pecos National Historical Park, 1 Peach Drive, Pecos, NM 87552

• Scope of Work:

1. Conduct an initial assessment of the existing pumps to ensure compatibility of replacement pumps and identify location for auto bleed to be installed.

2. Submit recommended plan to representative from Pecos National Historical Park for replacement of pumps, installation of auto bleed, and annual maintenance to be performed for approval.

3. Descale and flush boilers and entire heating system to remove debris and impurities that may damage new pumps and other components.

4. Install high auto bleed(s) in system to ensure excess air escapes.

5. Safely disconnect electrical supply to pumps and isolate the system to limit water escaping from system and ensure no damage to surrounding infrastructure.

6. Remove existing pumps and evaluate plumbing connections for suitability in re-use.

7. Install new pumps to manufacturer recommendations and ensuring all connections are tight and leak free.

8. Replace conditioned water in heating system with manufacturers recommended percentage of glycol.

9. Perform manufacturers recommended annual maintenance on boilers and

10. Verify that heating system operates as intended and meets design specifications of the system.

11. Remove all debris and old equipment from jobsite.

• See Appendix A photograph of existing pumps and boilers

• Period of Performance:

Work must be completed within 60 calendar days after contract award.

ITEM 2 - EXISTING UTILITIES

• Coordinate with utility providers and NPS staff to locate existing underground services before excavation,

• Repair any damage to utilities caused by contractor operations at no cost to the Government.

ITEM 3 - CONTRACTOR’S USE OF PREMISES

• Contractor must contact Park representative upon arrival to jobsite and prior to commencing work for pre-construction meeting to discuss project compliance and mitigations.

• Work hours are limited to 8 a.m. to 4 p.m., Monday through Friday, excluding federal holidays, unless otherwise approved.

• List of Federal Holidays o New Year’s Day (January 1) o Birthday of Martin Luther King, Jr. (Third Monday in January) o Washington’s Birthday (Third Monday in February) o Memorial Day (Last Monday in May) o Juneteenth National Independence Day (June 19) o Independence Day (July 4) o Labor Day (First Monday in September) o Columbus Day (Second Monday in October) o Veterans Day (November 11) o Thanksgiving (Last Thursday in November) o Christmas Day (December 25)

• Maintain public safety and minimize inconvenience during construction.

• Storage of Materials: Confine storage of materials to the immediate vicinity of the project site unless arranged by NPS representative.

• Use of Site: Limit use of premises to work areas and do not disturb portions of site beyond areas defined by NPS representative.

• Prevent Damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants at no additional expense to the Government

• Provide temporary barriers to protect existing trees, plants and root zones.

• Do not remove, injure, or destroy trees or other plants without prior approval.

• Do not fasten ropes, cables, or guys to existing trees.

• Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

• Driveways and Entrances: Keep Driveways and entrances serving premises clear and available to Government, Government’s employees, and emergency vehicles at all times.

• Cleaning of Equipment: Contractor shall ensure that prior to work, all equipment is free of soil, seeds, vegetative matter, or other debris that could hold or contain seeds.

• Contractor may use restrooms located nearby.

ITEM 4 - EXAMINATION OF THE SITE

• Contractors are encouraged to visit the site to understand project conditions. Site visits can be arranged with Facilities Manager, Jim Huck at jim_huck@nps.gov or 505-470- 2886.

ITEM 5 - ACCIDENT PREVENTION

• Develop and submit an Accident Prevention Plan – The plan shall be written to comply with OSHA and project requirements including but not limited to the following:

o Name of responsible supervisor to carry out program o Outline the work and associated hazards and methods proposed to ensure property protection, safety to the public, National Park Service personnel and contractor’s employees.

o Planning for emergency situations o Fire Protection.

• Ensure proper PPE usage, including ANSI-compliant safety gear is available to all contactor’s employees.

• Qualifications of Employees: Ensure that employees are physically qualified to perform assigned duties in a safe manner.

• Do not allow employees to work whose ability or alertness is impaired because of drugs, fatigue, illness, intoxication, or other conditions that may expose themselves or other to injury.

ITEM 6 - SUBMITTALS

• Provide product data for replacement unit.

• Submit a detailed construction schedule and accident prevention plan before the preconstruction conference.

ITEM 7 - PROJECT CLOSEOUT

• Submit as-built drawings and warranty information for installed components.

mailto:jim_huck@nps.gov

• Complete a final inspection, addressing any punch-list items within the specified time frame.

Appendix A:

Grundfos MAGNA3 40-180 F 216 Circulating Pumps

Grunfos Type UPML 24-104 Circulating Pumps

Bell & Gossett PL-30 B located in the mechanical room on west side of building.

Boilers