Fiberglass

Underground

Wastewater Tanks

Xerxes Fiberglass Wastewater Tanks

Fiberglass Tanks for Long-Term Storage of Wastewater

As communities, businesses and industries become increasingly

hoods and communities of America, Xerxes underground tanks

accountable to meet environmental requirements for liquids that

are in place, simultaneously storing products and protecting the

require safe, design-proven storage, Xerxes is in the forefront with

environment.

innovative answers. When considering the options in customized

Today Xerxes is taking its place in those same neighborhoods and

systems to process and store wastewater, facility designers and

communities as a major supplier of storage tanks for wastewater

owners look for a long-term, structurally strong, watertight and

applications -- including septic, recirculation, dosing and hold-

cost-effective option. That is exactly what the Xerxes fiberglass

ing tanks -- as well as other liquids, such as leachate, chemicals,

tank is.

potable water, fire-protection water, irrigation water, gray water,

For decades, Xerxes has been well-known as a major tank suppli-

rain water, stormwater and emergency-supply water. Each time a

er to the petroleum industry, with more than 150,000 tanks

Xerxes fiberglass underground tank is delivered to a customer, the

installed. Many of the world's largest oil companies rely on Xerxes

same performance standard has been met -- a vessel for safe

underground storage of liquid and careful protection of the envi-

to supply environmentally safe underground tanks for storage of

ronment.

gasoline at their retail service stations. Throughout the neighbor-

Tanks Designed & Manufactured by a Long-Time Industry Leader

Xerxes is a leader in the design and manufacture of high-qual-

At Xerxes, excellence in service is as highly valued as excellence

ity, cost-effective products that help protect the fragile rela-

in product design and manufacturing. Xerxes' four strategically

tionship between humans and their environment. Each Xerxes

located manufacturing facilities in the United States provide

wastewater tank represents decades of innovation and proven

customers with prompt, economical delivery and quality serv-

experience developing and fabricating fiberglass storage tanks

ice. That gives Xerxes tanks one more advantage -- they are

for underground storage of liquids.

readily available to customers throughout the country.

Watertight Tanks Featuring the Many Benefits of Fiberglass

A fiberglass wastewater tank, by virtue of its materials and design,

is inherently the superior choice for safe, long-term storage and

treatment of wastewater for a wide range of applications. The best

storage system for wastewater is structurally strong, corrosion-

resistant, watertight, easily installed and cost-effective. All these

elements come together in the design and manufacture of a

Xerxes fiberglass wastewater tank.

Xerxes uses only high-quality resin and glass in the manufacture

of its fiberglass tanks. For added structural strength, Xerxes tanks

are designed with integral ribs. Because the integral ribs and tank

are made of the same materials and are manufactured simultane-

ously, the Xerxes tank is a very robust tank. It is designed to

accommodate heavy traffic loads and high water-table conditions

when properly installed. Fiberglass tanks available from smaller

fabricators may also utilize ribs, but they may not be designed for

ceptible to leaking, causing either groundwater contamination or

traffic environments and do not have the same robust design fea-

groundwater infiltrating into the tank, requiring the system to

tures of a Xerxes tank. While concrete tanks are widely viewed as

processes groundwater along with septage. A structurally strong,

structurally strong, many are not designed for the heavy loading

watertight fiberglass tank eliminates both of these problems.

conditions that vehicle traffic and groundwater can present.

Quality manufacturing is key to producing a strong, watertight

Since water by nature can create a corrosive environment, rust can

tank. When it comes to the environment, Xerxes knows that too

be a major weakness in some underground wastewater storage sys-

much is at stake to manufacture anything less than a superior

tems. The materials used to construct Xerxes fiberglass tanks are

underground storage tank. Xerxes maintains high standards of

inherently rustproof and corrosion-resistant. Concrete tanks,

quality in the manufacture of each tank. The quality control steps

whether precast or poured-in-place, are susceptible to rust if the

are applied in a tightly controlled manufacturing environment.

steel reinforcement is exposed through cracks in the concrete.

On the other hand, the same level of quality control may not be

Exposure to hydrogen sulfide gases, present in wastewater tanks,

maintained in situations where tanks are assembled, in part or in

can also cause corrosion damage to a concrete tank and steel rein-

whole, in the field and where weather conditions may not allow

forcement, thereby limiting the tank's useful life. Since waste-

careful quality control procedures.

water tanks can be exposed to highly corrosive conditions, select-

ing a Xerxes wastewater tank gives system owners and designers

the assurance that rust or corrosion will not cause a leak or struc-

tural failure.

Features of Xerxes Wastewater Tanks

Aside from being rustproof and corrosion-resistant, a Xerxes tank

Constructed of rustproof, long-lasting fiberglass

is also designed to be watertight. Easily equipped for on-site pres-

sure testing before and after installation, Xerxes wastewater tanks

Manufactured to meet customers' functional requirements

give owners the confidence that the tank is watertight from the

Designed with integral ribs for added strength

day it is installed. This feature is of growing importance with

today's stringent regulations, many requiring watertight systems.

Designed for H-20 load conditions

For more than 28 years Xerxes has been manufacturing thousands

Easy to ship and install

of underground tanks for use in the petroleum industry, where a

Can be purchased with accessories that allow for both

zero leak rate is the accepted industry standard. These fuel tanks

preinstallation and postinstallation pressure testing

must be leak-free, not only upon installation, but for decades, ver-

ified by periodic, precision-testing practices that are routine for

Manufactured to applicable requirements of Underwriters

gasoline tanks.

Laboratories (UL) 1316 and ANSI/AWWA D120

Leaking concrete tanks are one of the reasons that Xerxes tanks have

Able to be reinstalled after recertification

become such a popular choice for wastewater applications.

Available in single-wall, double-wall and triple-wall models

Concrete, by its nature, is vulnerable to cracking. In most cases,

precast concrete tanks rely on sealants or adhesives to seal the seams

Available in sizes from 600 gallons to sizes in excess of

designed into the tank. When the ground around the tank shifts or

60,000 gallons

settles, or when the tank is improperly installed, these seams are sus-

The Design of Xerxes Wastewater Tanks Offers Many Advantages

Many advantages of a Xerxes wastewater tank come from the

(Some typical applications are shown in these pages.) Xerxes tanks

geometry of the tank itself. The Xerxes tank has a cylindrical

can be manufactured in sizes from 600 gallons to in excess of

shape and is domed at both ends, which offers major benefits in

60,000 gallons, with multiple compartments, and in single-wall,

terms of both operation and maintenance. The shape of a Xerxes

double-wall and triple-wall models. Whatever the application and

tank maximizes the natural flow of liquids through a vessel, allow-

whatever the size, each Xerxes fiberglass wastewater tank offers the

ing for the smooth flow of liquids through the tank and maxi-

same benefits: It is watertight, rustproof, corrosion-resistant and

mum use of the tank's interior.

lightweight. A Xerxes tank is easy to install, easy to operate and

easy to maintain.

A domed, cylindrical tank minimizes pockets or "dead" spots in

which scum or sludge can accumulate. The smooth, rounded sur-

All in all, from delivery to operation, Xerxes offers customers a

faces of the tank's interior provide a significant advantage when

superior option for all their wastewater tank needs.

pumping out scum and sludge. Tanks designed with squared cor-

ners and sharp angles can have pockets and "dead" spots, creating

two major disadvantages -- diminished volume and spaces in

Typical Wastewater Applications

which scum and sludge settle.

Housing developments

When a Xerxes wastewater tank is delivered to an installation site,

Municipalities

all it needs to be ready for operation is connection of the piping

and installation of the risers, which allow for easy access to the tank

Public parks

for maintenance and cleaning from above grade. Septic systems

Rural developments

manufactured of other materials may be delivered in multiple

Sanitary stations

pieces and require field assembly. That not only makes installation

more difficult and time-consuming, it also increases the possibili-

Rest areas and truck stops

ty of leakage once the system is in operation. The installation and

Private RV parks

proper curing of cast-in-place tanks can be very time-consuming,

taking days or weeks, as opposed to the one-day installation typi-

Resorts

cal for a Xerxes fiberglass tank.

Schools and recreation centers

Xerxes tanks fit a variety of wastewater applications. They can be

Business parks

used as septic tanks, recirculation tanks, dosing tanks, pump tanks,

holding tanks and tanks using prepackaged treatment systems.

Dual-Compartment Septic Tank Applications

When an application

calls for more than one

compartment in a pri-

mary treatment system,

Xerxes offers a dual-

compartment fiberglass

tank, which has two

compartments with a

baffle between them to

control the waste stream.

Xerxes also offers waste-

water tanks with more

than two compartments.

When an application

requires more than one

compartment, other sys-

tems may use a number

of separate tanks, which

increases the possibility

of failed connections.

requirements. Recent Xerxes installations of dual-compartment

This is an example of a definite advantage that customers have

septic tanks are residential septic systems in the desert, and septic

with Xerxes dual-compartment septic tanks. Compartment sizes

systems in small business parks and schools.

can be configured in a variety of arrangements to meet design

Large Commercial Septic Tank Applications

When a customer needs

a large commercial sep-

tic system, a Xerxes tank

can serve as the sole tank

in a septic system or as

the second tank in a

two-tank septic system.

This Xerxes tank has a

major advantage over

build-in-place or multi-

ple-tank systems, which

typically require several

smaller tanks to create a

large system. Xerxes

access-opening designs

can also accommodate

multiple pump cham-

bers that are often neces-

sary in large commer-

cial-size tanks.

The Xerxes large com-

mercial septic tank is a good fit for hotels and resorts where open

lon/day treatment system for a resort community in the moun-

green space is limited. Since Xerxes tanks are designed for H-20

tains and a 40,000-gallon/day treatment system for a conference

load conditions, they can be installed under parking space. Recent

center in the Midwest.

installations of this type of Xerxes tank include a 150,000-gal-

Recirculation Tank Applications

One way of treating the waste

stream is by recirculating the

effluent through a filter (gravel,

sand or peat, for instance). The

common denominator in such

secondary treatment systems is

a recirculation tank. A Xerxes

wastewater tank can be used in

any system that requires recir-

culation of the waste stream.

Whether a wastewater cus-

tomer is installing a new system

or is retrofitting an existing sys-

tem, a Xerxes recirculation

tank, in which all waste liquids

can be stored in one tank, is a

superior option. Installing a

Xerxes recirculation tank can

eliminate the need to install a

whole new septic system.

Recirculation tanks can be designed and manufactured to fit spe-

Xerxes also manufactures bottom sumps to meet this requirement.

cific requirements for splitter valves and pumping equipment.

A typical example of a Xerxes recirculation tank application is a

Whether the system has a hanging pump chamber or a submerged

recently installed 10-foot-diameter, 30,000-gallon recirculation

pump mounted on a pump platform, Xerxes can provide a recir-

tank at a trailer park that previously had a concrete septic system

culation tank and accessories to fit a customer's specific require-

that needed upgrading because of new regulations pertaining to

ments. If an application requires use of the entire tank capacity,

existing secondary treatment systems.

Dosing Tank Applications

Certain wastewater systems

require a dosing tank. A Xerxes

dosing tank is designed to

receive the wastewater from a

septic tank at two points in the

process -- after primary treat-

ment and/or after secondary

treatment -- and then dis-

pense of the effluent for final

dispersal and/or disinfection.

A Xerxes fiberglass dosing tank

allows for the storage of surge

capacity in the system and

periodic dispersal of doses of

effluent into the drain field in

one of two ways -- either elec-

trically with a pump or

mechanically with a siphon.

Each Xerxes tank is manufac-

tured with the same structural

integrity designed to handle

the pressures of continuous filling and emptying of the tank at

fiberglass tank is an excellent choice as a dosing tank in a waste-

specified burial depths. A watertight, corrosion-resistant Xerxes

water system.

Prepackaged Treatment System Applications

Many wastewater projects today are designed with an engineered

prepackaged treatment system. These systems have a variety of

designs, but all require a watertight, structurally strong, corro-

sion-resistant storage vessel. Xerxes offers all the options in tank

design needed to accommodate most treatment systems. Whether

the engineered system is a sequenced batch reactor (SBR), aerobic

treatment unit (ATU), membrane bio-reactor (MBR) or other

technology, Xerxes offers a range of advantages and flexible design

options. One of these advantages is providing the customer with

a product assembled in the plant and shipped to the project site

as a complete system.

Xerxes installation of treatment components in the plant reduces

or eliminates the requirement for tank entry in the field, thereby

saving considerable installation time and expense. A confined

space entry can be a costly step for the installer of the system.

Also, because Xerxes assembles these components in a factory-

controlled environment, the customer can receive a higher-quali-

ty finished product than with the many variables created by field

worked closely with many system suppliers to provide unique

assembly and installation. Additionally, the use of Xerxes tanks for

tank solutions for engineered prepackaged systems going to

collection and disposal along with Xerxes tanks for treatment pro-

national park sites, housing developments, manufacturing facili-

vides the designer and/or owner with an entire system that is

ties and schools.

watertight and corrosion-resistant. In recent years, Xerxes has

Other Wastewater Tank Applications

Lightweight, watertight and corrosion-resistant fiberglass tanks

Additional examples of recent Xerxes wastewater tank installa-

are ideally suited to a variety of wastewater projects, whether they

tions are: 1) a wastewater holding system for an amphitheater in

are in a rural community, a remote location or the middle of a

Washington state; 2) a recirculating, sand-filter wastewater treat-

city. Each Xerxes wastewater tank is designed and manufactured

ment system for a Minnesota housing development; 3) surge

to meet a customer's specific requirements. Today, many Xerxes

tanks, settling tanks and lift station/pump tanks for a city sewer

tanks are finding their way into neighborhoods as septic tanks for

system in Missouri; and 4) 62,000-gallon tanks for a wastewater

single-family homes. (See photo above.)

treatment system for a desert housing development in Arizona.

Optional Tank Accessories to Fit a Variety of Wastewater Applications

One of the ways Xerxes continues to meet the changing needs of

range of its wastewater tanks. Shown here are just a few of these

the marketplace is to meet the functional requirements of system

accessories, including access openings, piping connections, baf-

designers and owners. When it comes to the wastewater market,

fles/partition walls, sumps, risers and deadmen.

Xerxes has developed a line of accessories to complement the full

Access Openings

Internal Baffles/Partition Walls

Xerxes offers a

Xerxes' internal baffles

variety of fiberglass

and partition walls can

access openings for

improve

treatment

wastewater tanks.

performance in waste-

The access open-

water tanks by maxi-

ings serve a variety

mizing the retention

of purposes, includ-

time of waste. These

ing as inspection

fiberglass accessories

openings and as

are designed and man-

openings for efflu-

ufactured with the

ent filters (vaults).

appropriate penetra-

They are available

tions to fit the needs of

in a range of sizes, from 24 inches to 48 inches in diameter

specific applications.

and can include internal flanges to support pump platforms.

Other wastewater tank accessories

Piping Connections

To fit a variety of

wastewater applica-

tions, Xerxes provides

a wide range of acces-

sories. These include

access risers (photo to

right), large-diameter

bottom sumps (photo

below), reinforced-

concrete

deadmen,

fiberglass hold-down

Depending on the application, wastewater tanks require a variety

straps and fiberglass or

of accessories for piping connections. Xerxes offers, in either

aluminum ladders.

PVC or FRP, inlet and outlet piping, and influent or effluent san-

itary tees. These connections are manufactured to the size

required for each application.

Pump Platforms

Depending on the type

of system design, a Xerxes

wastewater tank may

require a submerged

pump. Among the acces-

sories Xerxes offers are

pump platforms designed

to support submerged

pumps located in the

bottom of the tank.

Single-Wall Tank Data

Nominal Capacity

Actual Capacity

Nominal

Nominal Shipping

Number of Hold-Down

(gallons)

Tank Length

Weight (pounds)

Straps Required

4-Foot-Diameter Tanks

600

602

6'-11 7/8"

500

1,000

1,009

11'-3 7/8"

700

1,500

1,449

16'-0"

1,000

6-Foot-Diameter Tanks

1,500

1,779

10'-7 1/4"

800

2,000

2,376

13'-5 3/4"

1,000

3,000

2,973

16'-4 1/4"

1,200

4,000

4,131

21'-11 1/8"

1,600

5,000

5,064

26'-5"

1,900

6,000

5,960

30'-8 3/4"

2,200

8-Foot-Diameter Tanks

2,000

2,189

9'-1/2"

900

3,000

3,271

12'-3"

1,200

4,000

4,218

15'-1/2"

1,400

5,000

5,165

17'-8 1/2"

1,700

6,000

6,084

20'-6 1/2"

2,000

7,000

6,946

23'-1"

2,200

8,000

7,950

26'-1/2"

2,500

9,000

8,869

28'-9"

2,700

10,000

9,816

31'-6 1/2"

3,000

11,000

10,763

34'-4"

3,200

12,000

11,682

37'-1/2"

3,500

13,000

13,081

41'-2"

4,000

14,000

14,028

43'-11 1/2"

4,200

15,000

14,975

46'-9"

4,500

10-Foot-Diameter Tanks

10,000

10,563

21'-5 1/4"

3,200

11,000

11,364

22'-9 3/4"

3,400

12,000

12,068

24'-1/4"

3,600

13,000

12,966

25'-6 3/4"

3,800

14,000

13,767

26'-11 1/4"

4,000

15,000

15,248

29'-5 3/4"

4,500

20,000

20,055

37'-8 3/4"

5,700

22,000

22,580

42'-3/4"

6,600

25,000

25,783

47'-6 3/4"

7,900

30,000

30,590

55'-9 3/4"

9,400

35,000

35,397

64'-3/4"

10,500

40,000

41,004

73'-8 1/4"

12,100

12-Foot-Diameter Tanks

20,000

20,781

29'-4"

9,200

25,000

25,541

35'-7"

10,600

30,000

31,253

43'-1"

12,500

35,000

36,013

49'-4"

13,900

40,000

39,821

54'-4"

15,000

48,000

48,389

65'-7"

17,700

50,000

50,293

68'-1"

18,300

Guide Specifications Single -Wall FRP Tanks for Septic Use

Short Form:

2. Resin used in tank and accessories shall be premium

isophthalic polyester.

The contractor shall provide a single-wall fiberglass reinforced

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

plastic (FRP) underground storage tank as shown on the draw-

1. Tank shall have nominal capacity of _____ gallons.

ings. Sizes and fittings shall be as shown. The tank shall be a

2. Tank shall have nominal outside diameter of ______

fiberglass tank as manufactured by Xerxes Corporation.

feet.

2.02 Accessories

Tank shall be tested and installed according to the Xerxes

A. Piping:

Installation Manual and Operating Guidelines in effect at time

of installation.

1. Schedule 40 PVC or FRP pipe shall be used for inlet

and outlet piping.

Long Form:

2. When a PVC pipe is affixed to the tank, a fiberglass

lay-up is used.

Part I: General

3. All piping shall be factory-sealed to enable field tight-

1.01 Quality Assurance

ness testing with at least one pipe opening provided

A. Acceptable Manufacturer: Xerxes Corporation

with a threaded fitting for connecting a pressure-test

B. Governing Standards, as applicable:

manifold.

1. Tank manufacturer shall be in the business of manu-

B. Access Openings:

facturing tanks to Underwriters Laboratories, Inc.

1. All access openings 24 inches in diameter or larger

(UL) Standard 1316.

shall be manufactured of FRP.

2. Tank manufacturer shall be in the business of manu-

2. Location(s) shall be as shown on tank drawings.

facturing tanks conforming to the requirements of

3. Optional riser extensions shall be FRP or PVC.

ANSI/AWWA D120 Thermosetting Fiberglass-

4. With tanks designed for on-site tightness testing, all

Reinforced Plastic Tanks.

access openings shall be factory-sealed to enable field

Part II: Products

tightness testing.

2.01 Single-Wall Fiberglass Reinforced Plastic (FRP)

C. Optional Anchor Straps:

Underground Storage Tanks:

1. Straps shall be FRP anchor straps as supplied by tank

A. Loading Conditions -- Standard tank design shall meet

manufacturer.

the following criteria:

2. Number and location of straps shall be specified in

1. Internal Load -- Tank shall be designed to withstand

current literature by tank manufacturer.

a 5-psig air-pressure test (3 psig for a 12'-diameter

D. Optional Ladders:

tank) with a 5:1 safety factor. When tank is designed

for on-site testing, contractor shall individually test

1. Ladders shall be the standard ladder as supplied by

tank for leakage prior to installation. Maximum test

tank manufacturer.

pressure is 5 psig (3 psig for a 12'-diameter tank).

E. Optional Fittings:

2. Surface Loads -- Tank shall withstand surface H-20

1. All threaded fittings shall be constructed of carbon

axle loads when properly installed according to tank

steel or FRP.

manufacturer's current Installation Manual and

2. All standard threaded fittings shall be half-couplings

Operating Guidelines.

and shall be 2", 4" or 6" in diameter. Reducers are to

3. External Hydrostatic Pressure -- Tank shall be capa-

be used for smaller sizes where shown and provided

ble of being buried in ground with 7' of overburden

by contractor.

over the top of the tank, the hole fully flooded and a

3. All FRP and PVC nozzles shall be flat-faced and

safety factor of 5:1 against general buckling.

flanged, and shall conform to ANSI B16.5 150#

4. Tank shall support accessory equipment -- such as

bolting pattern.

inlet and outlet piping, effluent filter chamber, lad-

F. Optional Internal Pump Platforms:

ders and baffles -- when installed according to tank

1. Pump platforms shall be FRP.

manufacturer's current Installation Manual and

Operating Guidelines.

2. Contact tank manufacturer with pump details, such

as dimensions and weight

B. Product Storage:

Part III: Testing and Installation

1. Tank shall be capable of storing wastewater products

limited to the collection and storage of human solid

3.01 Testing

or liquid organic sewage.

A. Testing--Tank shall be tested according to the Xerxes

2. Tank shall be vented to atmospheric pressure.

Installation Manual and Operating Guidelines in effect

at time of installation.

3. Tank shall be capable of storing products identified in

the manufacturer's current standard limited warranty.

B. Optional Testing--Prior to installation, a tank-tightness

C. Materials:

test consisting of a 5 psig air pressure/soap test shall be

1. Tank shall be manufactured with 100% resin and

performed (3 psig for 12-foot-diameter tanks) per the

glass-fiber reinforcement. No sand fillers.

tank testing procedures outlined in the Xerxes

Guide Specifications Single -Wall FRP Tanks for Septic Use

Installation Manual and Operating Guidelines in effect

B. Tank shall be installed according to the Xerxes

at time of installation.

Installation Manual and Operating Guidelines in effect

at time of installation.

3.02 Installation

Part IV: Warranty

A. Contractor shall be trained in proper installation proce-

4.01 Warranty

dures by the tank manufacturer, the state or other

approved agency.

A. Warranty shall be manufacturer's standard limited warranty

for underground septic tanks in effect at time of purchase.

Limited Warranty

Underground Septic Tanks

Xerxes Corporation ("Xerxes") warrants to ("Owner") that our underground septic tanks, and all Xerxes manufactured septic tank

accessories, if installed, used and maintained in the United States in accordance with Xerxes' published specifications, installation

instructions and operating guidelines, all applicable laws and regulations, and the limited septic applications defined herein, will be

free from material defects in materials and workmanship for a period of one (1) year from date of original delivery by Xerxes. Septic

applications for purposes of this warranty are limited to the collection and storage of solid or liquid organic sewage and wastewater at

temperatures not to exceed 140º F.

If any tank is to be removed from an installation, moved to Owner's new location and is intended for active service at the new loca-

tion, the tank must be recertified by Xerxes in order to maintain the warranty as originally extended. The foregoing warranty does not

extend to tanks or accessories (collectively "Goods") damaged due to acts of God, war, terrorism, or failure of Goods caused, in whole

or in part, by misuse, improper installation, storage, servicing, maintenance, or operation in excess of their rated capacity, contrary to

their recommended use, or contrary to the septic applications defined above, whether intentional or otherwise, or any other cause or

damage of any kind not the fault of Xerxes. Xerxes only warrants repairs or alterations performed by Xerxes or its authorized contrac-

tors. Xerxes does not warrant any product, components or parts manufactured by others.

XERXES' OBLIGATIONS UNDER THIS LIMITED WARRANTY ARE NULL AND VOID IF A TANK HAS BEEN USED FOR PRODUCTS CONTAIN-

ING A "HAZARDOUS SUBSTANCE" AS DEFINED BY THE COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION AND LIABILI-

TY ACT OF 1980 (CERCLA OR "SUPERFUND") WHICH DESIGNATES CERTAIN CHEMICALS AS "HAZARDOUS SUBSTANCES." SEE 42

UNITED STATES CODE, SECTION § 9601 (14).

Owner's sole and exclusive remedy for breach of warranty is limited at Xerxes' option to: (a) repair of the defective tank or accessory,

(b) delivery of replacement tank or accessory to the point of original delivery, or (c) refund of the original purchase price. A claimant

must give Xerxes the opportunity to observe and inspect the tank and/or accessory prior to removal from the ground or the claim will

be forever barred. All claims must be made in writing within one (1) year after tank and/or accessory failure or be forever barred. THE

FOREGOING LIMITED WARRANTY CONSTITUTES XERXES' EXCLUSIVE OBLIGATION AND XERXES MAKES NO OTHER WARRANTY OR

REPRESENTATION, EXPRESS OR IMPLIED, WITH RESPECT TO THE TANK OR ANY SERVICE, ADVICE, OR CONSULTATION, IF ANY, FUR-

NISHED TO OWNER BY XERXES OR ITS REPRESENTATIVES, WHETHER AS TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PUR-

POSE, OR OTHERWISE. THE SELLER (XERXES) UNDERTAKES NO RESPONSIBILITY FOR THE QUALITY OF THE GOODS, EXCEPT AS OTH-

ERWISE PROVIDED IN THIS CONTRACT. THE SELLER (XERXES) ASSUMES NO RESPONSIBILITY THAT THE GOODS WILL BE FIT FOR ANY

PARTICULAR PURPOSE FOR WHICH YOU (OWNER) MAY BE BUYING THESE GOODS, EXCEPT AS OTHERWISE PROVIDED IN THE CON-

TRACT. THE REMEDIES SET FORTH IN THE ABOVE LIMITED WARRANTY ARE THE ONLY REMEDIES AVAILABLE TO ANY PERSON OR

ENTITY FOR BREACH OF WARRANTY OR FOR BREACH OF ANY OTHER COVENANT, DUTY, OR OBLIGATION ON THE PART OF XERXES.

XERXES SHALL HAVE NO LIABILITY OR OBLIGATION TO ANY PERSON OR ENTITY FOR BREACH OF ANY OTHER COVENANT, DUTY, OR

OBLIGATION UNDER THIS LIMITED WARRANTY EXCEPT AS EXPRESSLY SET FORTH HEREIN. IT IS EXPRESSLY AGREED THAT THIS LIMIT-

ED WARRANTY DOES NOT FAIL OF ITS ESSENTIAL PURPOSE. XERXES SHALL HAVE NO LIABILITY FOR COSTS OF INSTALLATION OR

REMOVAL OF GOODS, ENVIRONMENTAL CONTAMINATION, FIRES, EXPLOSIONS, OR ANY OTHER CONSEQUENCES ALLEGEDLY

ATTRIBUTABLE TO A BREACH OF WARRANTY, OR INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR OTHER DAMAGES OF ANY DESCRIP-

TION, WHETHER ANY SUCH CLAIM OR DAMAGES BE BASED UPON WARRANTY, CONTRACT, NEGLIGENCE, STRICT LIABILITY OR

OTHER TORT, OR OTHERWISE. IN NO EVENT SHALL XERXES' TOTAL LIABILITY HEREUNDER EXCEED THE ORIGINAL PURCHASE PRICE

OF THE GOODS WHICH GAVE RISE TO SUCH LIABILITY.

Consumer Notice: This Limited Warranty gives you (Owner) specific legal rights. You (Owner) may also have other rights which vary

from state to state.

Effective: 1/1/07