Underground Fuel Tank Q and A 11.02.26.pdf

Underground Diesel Fuel Storage Tank Cleaning, Inspection, Testing and Re-Fueling | Solicitation 593-27-1-577-0002

1. Statement of Work: During the site visit, Dwight referenced a specific scope of work. Could you please provide the latest complete statement of work, including any updated technical specifications?

• VA Response: The complete SOW and applicable technical specifications are included in the solicitation. The solicitation and any formally issued amendments contain the applicable scope. (PWS Section C.1.)

2. Waste Disposal: Does the facility have an EPA hazardous waste generator identification number? What waste handling, disposal, and manifest documentation will be required?

• VA Response: The EPA hazardous-waste generator identification number is not identified in the SOW. Sections C.7.9 through C.7.9.5 require characterization, proper containment, labeling, transportation and disposal of waste in accordance with applicable regulations. Waste manifests, transportation records, disposal receipts and applicable recycling certificates are required within five business days following disposal. The contractor is responsible for associated disposal costs.

3. Tank Quantity: Should contractors quote the complete scope for all nine 20,000-gallon underground diesel tanks, or is the work intended to be priced individually?

• VA Response: The contract scope covers all nine underground diesel fuel storage tanks, each with a nominal capacity of 20,000 gallons, as a complete turnkey requirement (Sections C.1 and C.3). The SOW does not establish a separate per-tank pricing schedule.

4. Work Sequence: Will the nine tanks be serviced consecutively, one at a time, or can multiple tanks be serviced simultaneously?

• VA Response: Work shall proceed one tank at a time. Only one underground tank may be removed from service at any time unless the CO or COR provides written authorization otherwise. The contractor shall preserve emergency power capability and return each tank to operational status by the end of the scheduled workday except where a written exception is approved. (Sections C.1 and C.7.10.)

5. Prevailing Wage: Are Service Contract Labor Standards or Davis-Bacon prevailing wage requirements applicable to this solicitation? If applicable, could you please identify the relevant wage determination?

• VA Response: The Contracting Officer has identified Service Contract Labor Standards as applicable. Wage Determination WD 2015-5593, Revision 33, dated August 27, 2026, is attached to the SAM.gov solicitation. Bidders shall review the solicitation and applicable wage determination.

6. Fuel Testing: Are specific ASTM, API, or other testing standards required for the existing diesel fuel before and after polishing?

• VA Response: Yes. Section C.6 requires representative pre-removal and final acceptance sampling, additional temporary-storage sampling when applicable, an independent ISO/IEC 17025-accredited petroleum laboratory, and compliance with the listed ASTM methods and acceptance parameters. Section C.6.6 identifies the test matrix, including ASTM D975 fuel compliance, water/sediment, water content, microbial contamination, sulfur, cetane, lubricity, viscosity, flash point and other listed characteristics. Sections C.6.3, C.6.4 and C.6.7 govern reuse and final acceptance; unacceptable fuel shall not be returned without written CO authorization. Bidders shall follow the complete testing table in the SOW rather than treating this summary as exhaustive.

7. Performance Schedule: What is the anticipated contract award date, project start date, and required completion period?

• VA Response: The anticipated award and period-of-performance dates are provided in the solicitation, as stated by the Contracting Officer. Section C.5 requires the contractor to submit a detailed project schedule within ten calendar days after award and to coordinate mobilization and work with the COR. No specific award date or completion duration is established in the SOW text.

8. Additionally, could you please provide or confirm the availability of the following technical information?

• VA Response: Available tank and fuel-system technical information is identified in the responses below.

9. Tank specifications, including dimensions, manufacturer information, and available drawings or as-built plans for the nine underground fuel storage tanks.

• VA Response: The facility has nine underground diesel fuel storage tanks, each identified in the SOW as having a nominal capacity of 20,000 gallons (C.7.11.1). The as-built tank arrangement (page 3) shows all nine tanks and their associated piping; the typical tank detail (page 1) shows double-wall leak detection and access components. Engineering has additionally reported a tank diameter of 119 inches (9 feet 11 inches). This measurement is consistent with the nominal 10-foot-diameter configuration in the supplied 2014 Xerxes fiberglass underground storage tank brochure (page 11). For that catalog configuration, the manufacturer lists an overall tank length of 37 feet 8¾ inches and actual capacity of 19,782 gallons. These are catalog specifications for a matching configuration, not independently verified installed tank length, model number, or calibrated capacity. The manufacturer brochure also lists a nominal 12-foot-diameter 20,000-gallon variant, which is inconsistent with the reported 119-inch diameter. The specific installed model/serial numbers and final dimensions should be verified against tank labels, original shop drawings, or installation records. The SOW currently specifies a maximum post-delivery inventory of 17,000 gallons per tank (C.7.11.1–C.7.11.2); the contractor shall independently verify available capacity and comply with the SOW operating limit and monitoring requirements.

The supplemental as-built screenshots and manufacturer brochure may be provided to all bidders through the CO.

10. Current approximate fuel levels in each tank and estimated quantities requiring polishing or replenishment.

• VA Response: Section C.7.11.2 lists estimated inventories (gallons) for Tanks 1–9 respectively:

16,467; 16,449; 16,365; 16,576; 14,523; 15,020; 15,094; 15,137; and 14,771. The corresponding estimated new-fuel additions to reach 17,000 gallons per tank are 533; 551; 635; 424; 2,477;

1,980; 1,906; 1,863; and 2,229 gallons, totaling 12,598 gallons. These are estimates, not verified current readings. Existing fuel is subject to sampling, testing and polishing/filtration as required;

the actual amount to be treated or replaced depends on field verification and test results. The contractor must verify inventories before transfer/delivery and shall not exceed 85% (17,000 gallons) per tank.

11. Tank access details, including manhole locations, opening sizes, and any site-specific access restrictions.

• VA Response: The typical as-built detail (page 1) identifies a 42-inch-diameter watertight manway enclosure and a 22-inch-diameter tank manway, as well as a ladder, manhole cover, sounding access, leak detector sensor and overfill-prevention components. The Xerxes brochure (page 10) also describes a standard 22-inch inside-diameter flanged manway. The as-built tank arrangement (page 3) indicates typical access manholes and fuel-fill connections for the nine-tank installation. All access dimensions and current obstructions shall be field-verified before mobilization. Contractor staging and access are subject to COR approval (C.4), and confined-space entry, atmospheric monitoring, and daily tank restoration are governed by C.7.3–C.7.10.

12. Available fuel system diagrams, piping layouts, and equipment specifications.

• VA Response: Supplemental as-built screenshots are available showing a typical tank assembly (page 1), the Building 3 fuel oil equipment-room layout (page 2), and the nine-tank arrangement with associated piping routes (page 3). The Building 3 drawing identifies filtration pumps, generator fuel oil transfer pumps, boiler fuel oil transfer pumps, and a level-control/leak-detection panel, with certain piping labels and sizes. The tank arrangement references additional detail drawing MH-501, which is not included in the supplied screenshots. These drawings provide layout context but do not constitute a complete verified current piping diagram, equipment schedule, or manufacturer specification. C.7.8 and C.7.11.7 establish the applicable work requirements.

13. Any existing fuel testing reports, inspection records, or known tank conditions that may assist with accurate pricing.

• VA Response: The SOW does not attach historical fuel-analysis reports, tank inspection records, or a definitive list of known tank deficiencies. Sections C.6 and C.7 require the contractor to conduct new sampling, cleaning, interior inspections and documentation, and report discovered deficiencies. Engineering should review its records and provide any releasable existing reports through the CO; bidders should not assume undocumented conditions are established facts.

14. Could local Engineering personnel provide the following, if available?

• VA Response: The supplied as-built drawings provide equipment arrangement information;

current equipment photographs and additional maintenance records are not included in the supplied documents.

15. Overall photographs of the Building 3 filtration assemblies, housings, strainers, and associated piping.

• VA Response: The Building 3 as-built screenshot (page 2) depicts the general locations of filtration pumps and associated fuel piping; however, it is a plan drawing, not a current photograph of the installed filtration assemblies, housings, strainers, or piping. Engineering should confirm whether current photographs can be provided. C.7.8 establishes the required inspection, cleaning, filter replacement, and operational verification.

16. Clear photographs of equipment nameplates and accessible filter-element markings, including manufacturer, model, part numbers, micron ratings, and quantities.

• VA Response: Section C.7.8.5 requires the awarded contractor to document manufacturers, models, filter part numbers, micron ratings and quantities for serviced assemblies; those existing details are not supplied in the SOW. Engineering should provide legible photographs or available equipment records through the CO if available. No unverified part numbers or quantities should be supplied.

17. Photographs of the installed Veeder-Root or other tank monitoring console, including its model identification, and available probe/sensor information.

• VA Response: The typical tank as-built (page 1) depicts a leak detector sensor, and the Building 3 plan (page 2) identifies a level-control/leak-detection panel. These drawings do not establish the installed Veeder-Root console model, current probe/sensor part numbers, or actual equipment condition, and are not substitutes for requested photographs. Engineering should confirm whether current console photographs and equipment details are available. C.7.11.7 requires inspection and verification of sensors, probes, alarms, and monitoring-system operation.

18. Existing equipment schedules, parts lists, or relevant maintenance records.

• VA Response: Existing equipment schedules, parts lists and historical maintenance records are not included in the supplied SOW, as-built screenshots or manufacturer brochure.

19.Regarding Solicitation 36C26127Q0089 for the VA Southern Nevada Medical Center fuel tank project, would the VA permit partial invoicing and payment upon satisfactory completion and acceptance of each group of three underground storage tanks?

Specifically, would invoices be authorized following completion and acceptance of tanks 1–3, tanks 4–6, and tanks 7–9?

If milestone invoicing is not permitted, could you please clarify the authorized invoicing schedule and payment procedures for this project?

• VA Response: No milestone invoicing permitted, One payment will be made once all work is completed.

Fiberglass Underground Storage Tanks for

Petroleum Applications www.xerxes.com

Xerxes® Corporation – A trusted brand for more than 30 years

Xerxes History Xerxes Corporation is widely viewed today as the leading manufacturer of underground storage tanks in the United

States. Established in 1979, Xerxes has forged strong brand loyalty built on a reputation for innovation and the highest quality products and services.

Like most market leaders, we have a long history of design innovation including development of the first UL-listed double-wall fiberglass tank. We followed that with the introduction of a second-generation double-wall design, which for the first time incorporated a factory-installed hydrostatic monitoring system. This method of leak detection has become the most popular form of monitoring fiberglass underground tanks. More recently, we further improved our tank design by incorporating Parabeam®, a unique and proprietary three-dimensional glass fabric. Parabeam bonds the primary and secondary walls of our double-wall tank together for greater structural integrity, while also allowing for a free-flowing, clearly defined interstice between the two walls. Industry-leading innovations such as these, plus many others, are why petroleum equipment distributors, fuel marketers and commercial accounts rely on Xerxes for safe underground storage tank products.

One Company – Two Trusted Brands Today, Xerxes is part of the ZCL® Composites group of companies manufacturing underground and aboveground fiberglass tanks for a wide range of applications, primarily petroleum products. ZCL Composites (ZCL) is a publicly traded company on the

Toronto Stock Exchange (TSX: ZCL). Established in 1987, ZCL began manufacturing fiberglass tanks in Canada. Like Xerxes in the United States, ZCL’s growth and the popularity of fiberglass tanks in Canada has been steady. Combined, the Xerxes brand in the United States and the ZCL brand in Canada make us North America’s largest manufacturer of underground storage tanks. We service our underground storage tank customers from six strategically located North American manufacturing plants, four in the United States and two in Canada. Our extensive geographic coverage gives us unmatched ability to cost-effectively deliver tanks anywhere in North America. With more than 200,000 tanks installed, our position as the industry’s leading manufacturer of underground storage tanks strengthens each year.

Benefits of Xerxes fiberglass underground storage tanks

Corrosion Resistance – External corrosion protection will always be a concern, but, with the widespread use of ethanol-blended gasoline (E10, E15, E85), biodiesel fuels and ultra-low sulfer diesel (ULSD), the focus has shifted to internal corrosion protection.

These new biofuels are creating increasing incidents of aggressive microbial-induced corrosion (MIC) of metal components in fueling systems. Fiberglass tanks are not vulnerable to internal corrosion caused by MIC. Neither do they rust externally due to corrosive soil environments.

Fuel Compatibility – In addition to creating corrosive conditions in tanks, new ethanol-blended fuels today also raise questions regarding compatibility of the stored fuel with tank materials. Xerxes double-wall fiberglass tanks are not only warranted for the full range of ethanol-blended gasoline, they are also UL-tested and UL-listed as compatible with 0-100 percent ethanol storage. This is a very clear and distinct difference from steel storage tanks.

Track Record – With hundreds of thousands of tanks installed thoughout North America during the last three decades, fiberglass tanks have an outstanding record of both protecting the environment and minimizing tank owners’ risk. The great majority of new underground tanks installed today for North America's largest fuel retailers and commercial fleet facilities are fiberglass tanks. After exploring their options and evaluating years of product performance, these tank owners overwhelmingly continue to choose fiberglass.

Why choose a fiberglass tank?

Since their introduction in the 1960s, fiberglass underground tanks have rapidly grown in popularity. It was becoming clear that rusting steel tanks were leaking and creating serious environmental damage. Therefore, the initial focus of fiberglass manufacturers was to design storage vessels that weren’t vulnerable to the effects of external corrosion.

Throughout the 1980s, major oil companies and other large fuel marketers quickly began to realize the benefits of fiberglass over steel underground tanks. Today the preference for fiberglass tanks reaches across all segments of the market and includes those who specify, install and own underground storage tanks. Further, the recognized benefits of fiberglass extend well beyond external corrosion protection. Today, with a greater industry-wide understanding of the increased regulatory burden and risks associated with storage tanks, tank buyers are much more educated and sophisticated in their product selection.

Consider the following features and benefits:

Why choose a Xerxes tank?

During the last three decades, Xerxes has gained a worldwide reputation as a leader in underground storage tank technology.

Since its inception in 1979, Xerxes has steadily grown from a tank manufacturer with a small market share to its role today as the market leader. This recognition can be attributed to the many experienced Xerxes employees who strive to not only meet but to exceed our customers’ requirements. Equally significant is the quality of the tanks and related products that we manufacture.

Underground storage tanks are not commodity products. Xerxes storage tanks offer customers a number of unique and significant design and performance differences superior to both competitive fiberglass tanks and steel tanks.

Consider the following:

Rib Design – Circumferential ribs are an important design element of any fiberglass underground vessel.

Therefore, the rib geometry and how it’s incorporated into the cylinder, or tank itself, is an important consideration for designers and customers as they compare products. In the Xerxes design, with its consistent, high-profile rib structure, ribs are fabricated directly into the tank cylinder – not as a secondary step in the process. This increases the overall strength of the tank and results in a structurally superior product.

Parabeam® Construction – As part of our history of continuous improvement, Xerxes introduced Parabeam, a unique and proprietary three-dimensional glass fabric, into its underground tank design. Parabeam enhances overall structural integrity by creating a bond between the primary and secondary cylinder walls, while providing a free-flowing interstitial space for monitoring capabilities. Another important benefit is the elimination of false alarms created by fluctuating reservoir levels that can be a recurring problem in other manufacturers’ hydrostatically monitored tanks.

Maintenance-Free – Many manufacturers of steel tanks have reduced their warranty duration from 30 years to 10 years, and have incorporated language that requires ongoing maintenance and removal of water bottoms as a condition of warranty coverage. The presence of water in the bottom of fuel tanks is a common condition. Maintenance to frequently remove it can be expensive over both the short-term and long-term life of a tank, and can also leave an owner vulnerable to denied warranty claims should a steel tank corrode internally. Xerxes offers a 30-year limited warranty with no restrictions regarding water-bottom monitoring and removal.

Company Stability – Over the last 30 years, tank manufacturers have gone out of business or filed for bankruptcy and no longer provide warranty coverage. Customers who purchase underground tanks do so with the expectation that their tank will provide many years of trouble-free service, and that the manufacturer will be around to suppport its products and its warranties. Xerxes has a three-decade record of doing just that.

How does TRUCHEK work?

TRUCHEK®– State-of-the-art continuous monitoring

TRUCHEK® hydrostatic tank monitoring for double-wall tanks is an easy, precise and reliable method for continuous leak detection and for tank-tightness testing. For two decades, TRUCHEK has been successfully monitoring thousands of tanks in many different types of installations.

Continuous Monitoring When you order a Xerxes double-wall tank with the TRUCHEK option, the interstice between the two tank walls is filled at the factory with a calcium-chloride fluid that also partially fills a reservoir, creating hydrostatic pressure throughout the interstice.

An electronic probe placed in the tank’s reservoir alarms when the fluid level either falls below or rises above the acceptable level. This increasingly popular method of leak monitoring gives tank owners greater peace of mind than the alternative method of using a simple liquid sensor, which often never detects an outer-wall breach.

TRUCHEK has become the industry standard as a state-of-the-art technique for continuous monitoring.

Changing regulations in some markets now require that new double-wall tanks have continuous leak detection using a constant vacuum, air pressure or hydrostatic pressure in the interstice. TRUCHEK is the ideal solution to this growing regulatory requirement.

Tank Tightness TRUCHEK also provides a simple, precise and reliable method to perform a tank-tightness test. The 10-hour tightness-test procedure meets the strict NFPA329 criteria. A shorter 4-hour test (while product is dispensing) exceeds EPA’s criteria for a tank-tightness test.

Reservoir Level Down

Primary-Tank Leak in Wet Hole or Dry Hole

Reservoir Level Down

Secondary-Tank Leak in Dry Hole

Reservoir Level Up

Leak in Outer Wall

Secondary-Tank Leak in Wet Hole

Reservoir Level Down

Additional underground storage tank solutions

When a customer’s needs go beyond the standard double-wall tank, Xerxes offers products that address a wide range of requirements. With a full line of tank accessories, we offer customers the most comprehensive range of solutions found in the petroleum equipment industry today. Please visit www.xerxes.com for additional information on each of these products.

Multicompartment Tanks – These Xerxes tanks are a popular choice among retail gasoline marketers and fleet fueling owners. The ability to store two or three grades of fuel, or gasoline and diesel, in a single tank is particularly appealing when the amount of onsite space needed for multiple tanks is either not available or difficult to obtain. Customers may also find installation and insurance cost savings when using multicompartment tanks. The Xerxes double-wall multicompartment tank comes standard with a double-wall bulkhead, while other tank manufacturers require an upgrade to a double-wall bulkhead. Xerxes offers a wide range of capacity options in 6-, 8- and 10-foot-diameter models.

Triple-Wall Tanks – Some customers and regulatory agencies now require even more enhanced protection than double-wall tanks provide.

Conditions that lend themselves to considering a triple-wall tank are sensitive groundwater aquifers, or nearby lakes or streams. The Xerxes UL-listed triple-wall tank, with an additional Parabeam interstice, is the innovative and cost-effective answer when this level of containment is required.

The ZCL Phoenix System® – In some situations, single-wall tanks that need to be upgraded to double-wall tanks offer site challenges that make removal of existing tanks either cost-prohibitive or extremely difficult. For instance, tanks are sometimes covered or surrounded by buildings, roads or rail lines. In such cases, converting a single-wall tank

(either fiberglass or steel) into a double-wall tank might be done most efficiently with ZCL’s Phoenix System. This ULC-listed system consists of two corrosion-resistant laminates with the proprietary Parabeam glass fabric between the laminates creating an interstitial space. The interstice can be either dry or hydrostatically monitored. The Phoenix

System, applied onsite by trained installers, is biofuels compatible, including ethanol-blended fuels and biodiesels.

Additional underground storage tank solutions

Diesel Exhaust Fluid Tanks – Demand for diesel exhaust fluid (DEF) is growing significantly as increasing numbers of commercial, passenger, rail and marine diesel engines that require the use of DEF enter the market. A Xerxes underground tank is the ideal solution for the very unique storage requirements that DEF presents. Unlike carbon steel tanks, a Xerxes fiberglass tank does not require special coatings or linings to protect the purity of the DEF product. Extensive testing with third-party laboratories was conducted to verify the suitability of long-term storage while maintaining product quality.

Oil/Water Separators – With a fiberglass underground tank at the heart of the design, a Xerxes oil/water separator incorporates unique refinements within the vessel to create a separator that removes free-floating oils and settleable sands from oil/water mixtures. A properly sized polypropylene vertical-tube coalescer is designed to produce effluent quality of

10 ppm free-floating oil. A Xerxes oil/water separator is an excellent choice for managing water runoff from parking lots or equipment washdown stations. This product is also available with a UL 2215 listing.

Xerxes uses stainless steel fittings, manway covers and striker plates on all tanks designed for DEF storage. A UL label is attached to all tanks that meet listing criteria. Each tank interior is thoroughly cleaned and then sealed to prevent contamination during shipping and installation.

In the relatively brief period of time that DEF has been used in North America, Xerxes has established a leadership role in introducing fiberglass tanks as the bulk storage vessel of choice.

With more than 1,000 DEF tanks in service, customers are clearly putting their trust in Xerxes’ design innovation capabilities.

Storage tank accessories

Today’s retail and commercial fueling facilities are sophisticated systems that are installed in a highly regulated environment.

While the storage tank is the critical component in an underground fuel system, other important accessories are necessary in order to provide spill containment, tank anchoring, tank-top corrosion protection, leak detection and other important functions. Xerxes engineers have designed innovative, complimentary products that provide system designers and installers with cost-effective, easy-to-install accessories. Not all tank manufacturers provide the wide range of accessories that Xerxes offers. This is another example of how Xerxes’ innovative spirit benefits customers.

As with many products, Xerxes tanks and accessories require proper installation to ensure that the customer receives the long-lasting, trouble-free performance that its products are designed for. To that end, Xerxes provides a comprehensive

Installation Manual and Operating Guidelines document that outlines the easy, yet proper, steps necessary for a successful installation.

Storage tank accessories

Containment Sumps and Collars – Sumps and collars are common accessories found on virtually all double-wall tanks installed today. Xerxes supplies optional, factory-installed containment collars that provide secondary containment around tank fittings and manways. Designed to be a custom match to the collar, the Xerxes containment sump comes in a variety of models and sizes, all engineered to accommodate different customer preferences and needs. Xerxes sumps and collars are also available in double-wall models that can be monitored with the reliable TRUCHEK hydrostatic monitoring system.

Anchoring System – Site-specific installation conditions generally dictate whether a tank-anchoring system is necessary.

Some customers choose to anchor all their tanks. Xerxes offers a complete tank-anchoring system, including reinforced precast concrete deadman (designed to American Concrete Institute standards), fiberglass anchoring straps and galvanized turnbuckles. Each component is engineered to specific tank sizes and for ease of installation. In most cases concrete deadmen can be delivered on the same trailer as the tank. This both minimizes the shipping cost and assures that deadmen are ready for use when the tank is set.

Hydrostatic Monitoring – The image on page 8 illustrates the functional design of the highly effective TRUCHEK hydrostatic monitoring system. A “jacket” of calcium-chloride solution is factory-installed in the tank interstice and connected to a tank-top reservoir where the fluid level is monitored with a simple level sensor. The unique Parabeam construction of a Xerxes double-wall tank eliminates false leak alarms that can occur with other tank designs. In addition to its simple, yet highly effective, monitoring capabilities, TRUCHEK provides true continuous monitoring of both tank walls regardless of site conditions. This continuous-monitoring feature is increasingly attractive to state and federal regulators, and may become a requirement for all new double-wall tanks in the future.

Guide Specifications for Xerxes Underground Petroleum Storage Tanks

Short form:

The contractor shall provide a double-wall or triple-wall fiberglass reinforced plastic (FRP) UL-listed underground storage tank as shown on the drawings.

The tank size, fittings and accessories shall be as shown on the drawings.

The fiberglass tank shall be manufactured by Xerxes Corporation.

The tank shall be tested and installed according to the Xerxes Installation Manual and Operating Guidelines for Fiberglass Underground Storage Tanks in effect at time of installation.

Long form:

Part I: General

1.01 Quality Assurance

A. Acceptable Manufacturer: Xerxes Corporation B. Governing Standards, as applicable:

3. City of New York Department of Buildings M.E.A., #161-89-M.

4. American Concrete Institute (ACI) standard ACI 318-11, Building Code Requirements for Structural Concrete.

C. Submittals

Part II: Products

2.01 Double-Wall and Triple-Wall Fiberglass Reinforced Plastic (FRP) Underground Storage Tanks:

A. Loading Conditions – Tank shall meet these design criteria:

B. Product Storage:

C. Materials:

D. Tank Dimensions (Refer to Xerxes literature on gallonage):

2.02 Tank Monitoring System

A. General

B. Design

2.03 Accessories

A. Tank Anchoring

B. Manways

C. Threaded Fittings

D. Containment Collars & Sumps

Part III: Testing and Installation

3.01 Testing

A. Testing – Tank shall be tested according to the Xerxes Installation Manual and Operating Guidelines in effect at time of installation.

3.02 Installation

A. Installation – Tank shall be installed according to the Xerxes Installation Manual and Operating Guidelines in effect at time of installation.

Part IV: Limited Warranty

4.01 Limited Warranty

A. Limited Warranty – Warranty shall be manufacturer’s standard limited warranty in effect at time of purchase.

Xerxes Underground Double-Wall Tank Data

Nominal Capacity (gallons)

Actual Capacity (gallons)

Tank Length (feet/inches)

Nominal Shipping

Weights (lbs) (dry interstitial)

Nominal Shipping

Weights (lbs) (wet interstitial)

Number of Anchor

Straps Required

600 602 7’-3 1/2” 900 1,100 2

1,000 1,009 11’-7 1/2” 1,400 1,700 2

2,000 2,013 22’ -3 5/8” 2,800 3,400 2

4-foot-diameter

2,500 2,324 13’-5 3/4” 2,200 2,800 2

3,000 2,910 16’-4 1/4” 2,600 3,300 2

4,000 3,789 20’-8” 3,600 4,400 2

5,000 4,961 26’-5” 4,300 5,200 4

6,000 5,840 30’-8 3/4” 5,000 6,100 4

6-foot-diameter

4,000 4,190 15’- 1/2” 2,700 3,600 2

5,000 5,089 17’-8 1/2” 3,200 4,200 2

6,000 6,044 20’-6 1/2” 3,700 4,900 2

8,000 7,899 26’- 1/2” 4,800 6,200 4

10,000 9,753 31’-6 1/2” 5,900 7,500 4

12,000 11,608 37’- 1/2” 7,000 8,800 4

15,000 14,881 46’- 9” 9,100 11,200 6

8-foot-diameter

10,000 10,420 21’-5 1/4” 4,900 6,400 4

12,000 11,904 24’- 1/4” 5,600 7,200 4

15,000 15,041 29’-5 3/4” 7,000 8,900 4

20,000 19,782 37’-8 3/4” 9,000 11,300 6

25,000 25,431 47’-6 3/4” 11,800 14,600 8

30,000 30,172 55’-9 3/4” 14,000 17,200 10

35,000 34,912 64’- 3/4” 16,500 20,100 12

40,000 40,443 73’-8 1/4” 19,000 23,100 14

10-foot-diameter

Notes:

1. Tank data for single-wall and multicompartment tank models is available at www.xerxes.com.

2. Actual height of the tank may be greater than the actual diameter due to fittings and accessories. Load height during shipping may vary due to tank placement on the shipping trailer.

3. If an overfill-protection device is installed in the tank, the actual capacity will be reduced.

20,000 20,638 29’ -4” 14,000 16,700 6

25,000 25,381 35’ -7” 16,600 19,700 8

30,000 31,072 43’ -1” 19,900 23,500 10

35,000 35,815 49’ -4” 22,500 26,500 12

40,000 39,609 54’ -4” 24,600 28,900 12

45,000 44,352 60’ -7” 27,400 32,100 16

48,000 48,146 65’ -7” 29,500 34,500 18

50,000 50,044 68’ -1” 30,500 35,700 18

12-foot-diameter

(Xerxes O�ce)

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Xerxes Corporation 7901 Xerxes Avenue South Minneapolis, MN 55431 USA 952-887-1890 www.xerxes.com

ZCL®, Xerxes®, Parabeam®, ZCL Phoenix System®, and TRUCHEK® are registered trademarks of ZCL Composites Inc.Vi

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