SOW_Effluent_Tank_Inspection.pdf

1 | P a g e

STATEMENT OF WORK

Project Title: Inspect Exterior of Two Effluent Wastewater Storage Tanks Impacted from the Carr Fire

Background / Introduction

The National Park Service, Whiskeytown National Recreation Area, Shasta County, CA, has the requirement for exterior inspection of two waste water effluent tanks within the park.

The prospective contractor shall inspect the exteriors of two Wastewater Effluent Storage Tanks located at two separate locations:

The first location is Brandy Creek Wastewater Treatment Compound, which has a 812,977 gallon carbon steel tank.

The second is at the Oak Bottom Wastewater Treatment Compound, which has a 1,012,630 gallon carbon steel tank.

The exterior tank walls will require a visual external, ultra-sonic thickness and hardness testing. These tests will then be evaluated to in accordance with the codes and standards developed by: Steel Tank Institute (STI), American Society for Nondestructive Testing (ASNT), American Society of Mechanical engineers (AMSE) and American Petroleum Institute (API) API 653 is the standard for tanks over 50 feet tall or having diameter greater than 30 feet.

The contractor will provide the following inspection documentation:

• Visual and Non-destructive testing (NDT) inspection results

• Ultrasonic thickness data on the accessible roof, shell courses and nozzles.

• Inspection pictures

2 | P a g e

Scope

Whiskeytown National Recreation Area is seeking a certified Carbon Steel tank Inspector to test and evaluate two above ground effluent wastewater tanks.

utilizing trained personnel meeting the requirements of SNT-TC-1A.

An NDT Level II: An individual that is qualified to set up and calibrate equipment and to interpret and evaluate results with respect to applicable codes, standards and specifications. The NDT Level II should be thoroughly familiar with the scope and limitations of the methods for which he is qualified. The NDT Level II should be able to organize and report the results of NDT tests.

Tasks & Details

Scope of Work Carbon Steel tank Visual Inspection:

• Inspect and evaluate tank walls and weldments, accessible roof and weldments, shell courses and exterior appurtenances on two effluent wastewater tanks.

• Perform Ultrasonic thickness data on the accessible roof, shell courses and nozzles.

• Provide an official certification document detailing the structural integrity and or deficiencies that need attention to maintain the structural integrity, so that the park can provide this report to the state and federal agencies that would require this information.

• Provide recommendations to correct identified deficiencies (if present).

Requirements

• Prospective contractor will be required to provide proof of training of employee(s) that will be performing the inspection. Include any supporting documents, recent letters of certification, your company letterhead and contact person for this cost proposal sheet. Please do not include taxes within your quote.

3 | P a g e

• Contractor must provide written schedule of obtainable completion dates upon being awarded the contract which will be accepted and agreed upon by both NPS and contractor prior to beginning work.

Government Furnished Property (GFP)

No government furnished property will be provided to the contractor for this project. It is recommended that the contractor provide or rent the following items to; Man lift, Scissor lifts, Ladders, Scaffolding, etc. Equipment that will allow the contractor to perform testing and inspections at heights above six feet for sustained periods of time necessary to achieve accurate testing results. (A list of local equipment rental companies can/will be provided if requested).

Security & Use of Premises

Contractor is not allowed to advertise or post company signs anywhere around or within the worksite area.

Work shall be performed during business hours. Contractor will be issued park pass for the duration of the project. After hour and or weekend work must be pre-approved by the NPS and access keys may be issued if needed.

Contractor is not allowed to establish or set up a construction camp with in the park. Contractor will stage in a designated area close to the worksite to be determined by the NPS.

All equipment working in the park will be weed free and inspected by the park NPS and or designated resource management staff. Contractor will pressure wash undercarriage of all equipment prior to entering the park.

Electricity will be provided to the contractor from the building. Generators and air compressors may be used after 7:00 am at each treatment plant on a daily basis as needed.

4 | P a g e

Contractor shall at all times conduct his operations to ensure the least inconvenience to the public and staff. If necessary, temporary fencing, flagging and barricades will be required to safely secure the worksite. The contractor shall maintain a clean and safe worksite at all times.

Confine materials/supplies within the worksite and parking spaces provided.

Additional storage areas will be designated by the NPS if needed.

Contractor must protect all natural resources including trees and plants within the construction site. If natural resource damage occurs, the contractor is responsible to restore, repair or replace any damaged resources 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.

Existing Utilities:

• Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs repair utility at no additional expense to the Government.

Hauling restrictions:

• Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the State load restrictions with such additional regulations may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park road ways may be obtained for the office of the Park Superintendent.

• A Special permit will not relieve the contractor of liability for damage, which may result from moving equipment.

5 | P a g e

Time of Performance, and Stipulation for Award

The contractor may not begin acquisition or obtainment of travel documents like plane tickets, rental vehicles, equipment or lodging arrangements until notice of awarded contract is received. Contractor may not begin any inspection proceedings of the Wastewater tanks until notice of awarded contract is received and will not be allowed to begin until after approximately June 25th 2019 and be completed by approximately September 30th 2019.

Any and all prospective contract awardees must be registered and in be in good standing within the Federal Governments System for Awards Management System aka (SAM).