B08 Attachment 1_SOW Well Testing and Eval.docx

United States Department of the Interior

U. S. GEOLOGICAL SURVEY

Columbia Environmental Research Center 4200 New Haven Road Columbia, Missouri 65201

Well Water Holding Tank #2 Inspection and Testing Statement of Work

1. General Information

a. Introduction. The Columbia Environmental Research Center (CERC) has a requirement for inspection and testing services of a 75,000 gallon water tower located at the CERC campus located at 4200 New Haven Road, Columbia, Missouri.

b. Background. The existing CERC water tower is a 75,000 gallon glass-fused, steel bolted, code compliant water storage tank which was constructed in 2015. It has a diameter of 19’ (5.79 meters) and a height of 40’ (12.19 meters). The tower is used to provide aerated water to buildings and research ponds.

c. Scope. The intent of this contract is to inspect and test the 75,000 gallon well water tank. The contractor shall provide all necessary equipment, labor, and tools to perform the work as identified in this Statement of Work (SOW).

2. Requirements.

a. On the tower’s roof there is one Infilco Multicone aerator serving the incoming supply water line. The aerator is located inside a penthouse on top of the tank. On the east side of the tower there are two vertical supply pipes each supplying water from separate deep wells. Pipe #1 is an 8” (20.3 cm) steel line coming from deep well #1 which is located approximately 25’ (6.09 meter) South East of the tower. Pipe #2 is an 8” (20.3 cm) vertical steel line that comes from a second deep well located approximately 870’ (265 meters) North East of the tower. On the West side of the tower at a height of approximately 20’ (6.1 meters) there is a 12” (30.48 cm) steel water line that serves 33 ponds on the campus. Below that there are a 12” (30.48 cm) and a 6” (15.24 cm) steel supply pipe that supply water to campus buildings. At the base of the tower there is a 2” (5.08 cm) outlet line that provides water for lubricating the line shaft of the well #1 pump. Water fed from the tower to both pond distribution system and buildings is gravity fed. Just to the South of the tank there is another 150,000-gallon tank that is not part of the scope of work. The limits of work for the inspection portion of this project are from the base of the tower to the top, above ground only, to include water pipe to the well head (approximately 26’ linear (7.92 meter) and all pipe above ground attached to the tower. Inspection shall include the louvered penthouse, the enclosed aerator and the concrete foundation.

b. References.

i. ASTM D4541 - Pull-off Strength of Coatings Using a Portable Adhesion Tester.

ii. AWWA D100 Potable Water Storage Tank Specification; Welded Steel Construction

iii. ASTM D2584 - Volatile Matter Content.

iv. ASTM D2240 - Durometer Hardness, Type D.

v. ASTM - the published standards of the American Society for Testing and Materials

vi. ANSI/NSF Standard 61- Drinking Water System Components.

vii. NACE - the published standards of National Association of Corrosion Engineers (NACE International), Houston, TX.

viii. SSPC - the published standards of the Society of Protective Coatings, Pittsburgh, PA.

ix. API Publications

1. API Recommended Practice 571, Damage Mechanisms Affecting Equipment in Refining Industry

2. API Recommended Practice 577, Welding Inspection and Metallurgy

3. API Recommended Practice 575, Inspection of Atmospheric and Low-Pressure Storage Tanks

4. API Standard 650, Welded Steel Tanks for Oil Storage

5. API Recommended Practice 651, Cathodic Protection of Aboveground Petroleum Storage tanks

6. API Recommended Practice 652, Lining of Aboveground Petroleum Storage Tank Bottoms

7. API Standard 653, Tank Inspection, Repair, Alteration, and Reconstruction

x. ASME Publications

1. American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code:

a. Section V, Nondestructive Examination

b. Section IX, Welding and Brazing Qualifications

c. The Contractor shall perform all work necessary to evaluate the condition of the tower and associated appurtenances.

d. The Contractor shall have a tank inspector with a valid API 653 certificate.

e. Work shall be governed by the references listed above and include the following work details:

i. Inspection for safety and reliability:

1. The contractor shall inspect the water tower thoroughly in accordance with API 653 (latest edition) protocols. Inspection shall include all longitudinal seams, horizontal seams, girth welds, inner radius, nozzle welds, tank walls, floors and roof.

2. Non-destructive testing may include ultrasound and/or phased array to access the external thickness and density of the steel. Radiography (RT) x-ray or an equivalent method shall be used to determine the condition of welds. Magnetic particle testing or an equivalent method shall be used to test for flaws that may signal potential leaks or weld defects.

3. The contractor shall thoroughly inspect and evaluate roof rafters, structural beams, support structure, hatches, access hatch, ladder, all penetrations and welds, and all other appurtenances including penthouse and aerators.

4. Testing shall conform to API 653. Inspection report shall detail efficiency of welds, acceptable bottom thickness, minimum wall thicknesses, metal loss, and corrosion rates.

f. At a minimum, the following items shall be inspected and addressed in the final report:

i. Structural conditions:

1. Is there any indication of foundations settlement?

2. Do areas exist where water pools or erosion has occurred around the foundations?

3. Do the foundations extend far enough above ground level to protect the tower base from excessive moisture and corrosion?

4. What is the physical condition of the concrete foundations?

5. Is the riser straight and are the riser pipes properly secure?

6. Check the entire structure for water leaks including all manways, risers and tower legs.

7. Check all welds and seams for cracks.

8. Check all bolts and rivets for corrosion and leaks. Torque to proper specification.

9. Check to see that all cables, conduits, antennae and similar devices are properly secured to the storage structures.

10. All roof trusses, rafters and their connections must be checked for ice damage, corrosion and soundness. This must include the welds connecting the roof to the rim angles and trusses.

ii. Coating system conditions:

1. Determine the type and general condition of the interior and exterior paint systems.

2. If rusting is continuous, approximate the percent of rusted area and determine the character of the areas (loose paint, blotchy, general corrosion, no paint).

3. Determine the extent, nature and depth of pitting.

4. Determine total system film thickness and run adhesion tests.

5. Check the paint for chalking and blistering.

6. Determine surface profiles.

7. Concrete structures should be inspected for signs of concrete deterioration (spalling, cracking, leaking, etc.).

8. Glass coated structures should be inspected for cracking, corrosion and other signs of coating deterioration.

iii. Safety and security conditions:

1. Check ladder brackets to assure that enough are provided, that they are not damaged by corrosion and that they are secure to both the structure and the ladders.

2. Check all ladder rungs to assure that they are secure and not damaged by corrosion.

3. Inspect all cables, power conduits, antenna brackets or similar devices.

4. Check landings and catwalks, catwalk railings and posts to make sure they are securely attached.

5. Check all painters’ rings and brackets to assure they are sound, securely attached and not excessively corroded.

iv. Sanitary conditions:

1. The roof and side walls of all structures must be watertight with no openings except properly constructed vents, manways, overflows, cathodic protection equipment, risers, drains, pump mountings, control ports or piping for inflow and outflow. No unprotected opening between the walls and roof are permissible. Are protections in place and adequate.

2. Any openings in a roof must be curbed (four to six inches) or sleeved with proper additional shielding to prevent precipitation and surface or floor drainage water from getting into the structure.

3. Roof access hatches must have watertight covers that overlap the framed opening and extend down around the frame at least two inches. The covers must be hinged on one side and have a locking device. All hatches should be checked to assure proper operation and fit.

4. Water storage roofs must be well drained and not tend to hold water. Low spots or structures that hold water must be corrected.

g. Green Acquisition.

i. The USGS is committed to promoting the natural environment and protecting the health and well-being of people. In the performance of work under this contract, the Contractor shall exert its best efforts to provide services in a manner that will promote the natural environment and protect health and well-being. Green purchasing or environmentally preferable contracting includes the initiatives described below:

1. Alternative Fuels and Vehicles are described at http://www.afdc.energy.gov/afdc/

2. Biobased Products are described at http://www.biopreferred.gov/

3. Energy efficient products are described at http://energystar.gov/products for Energy Star products and at http://www.eere.energy.gov/femp/procurement for FEMP designated products.

4. Environmentally Preferable Computers are described at http://www.epeat.net

5. Significant New Alternatives Program (SNAP) are described at http://www.epa.gov/snap/overview-snap

6. The Comprehensive Procurement Guidelines promote the use of recovered and recycled products at https://www.epa.gov/smm/comprehensive-procurement-guideline-cpg-program

7. Water efficient products and services are described at https://www.epa.gov/watersense

3. Deliverables.

a. The contractor shall provide a detailed written report detailing condition discrepancies and provide detailed guidelines and instructions to include measures necessary to bring the tank into compliance with current day codes and regulations regarding water tank operations. The report shall be supplied in digital format as well as 3 hard copies.

b. The contractor shall include in the report material condition findings that can be used to determine if the tower is in a serviceable state.

c. The report shall:

i. Identify current tower conditions including all discovered performance discrepancies.

ii. Provide recommendations for continued use as determined through industry standardized exhaustive non-destructive testing procedures.

iii. Identify repairs and actions necessary to bring the tower into serviceable condition. If repairs and actions are necessary, provide at a minimum: Nature of the Repairs (Description), Parts and Materials (Description, Part Number, and Quantity), Estimated Number of Hours, Unit Price, Extended Price, and Total Cost.

4. Inspection and Acceptance.

a. All work performed under this contract shall be subject to the inspection by the CERC Facility Manger in the presence of the contractor personnel, prior to the contractor personnel leaving the facility. This inspection should ensure that all equipment is returned to full functioning condition. No invoices will be processed for payment prior to the completion of POC inspection.

b. All work performed under this contract shall be subject to the approval of the CERC Facility Manager. Work unsatisfactorily completed shall be corrected at no additional cost to the government.

c. CERC Facility Manager, *Contact information to be provided at time of award*

5. Place of Performance.

a. Columbia Environmental Research Center (CERC), 4200 New Haven Road, Columbia, Missouri.

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