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– UST Cost Comparison 1 Task Order No. 1010

– General Technical and Programmatic Support in Implementing the Energy Policy Act of 2005 Task 1010

- 04

– Technical Research/Analysis And Summarize Information Subject 4

– Secondary

Containment Subtask SC

- 03 E 2 

### Inc. asked seven UST in stallers to estimate the equipment and installation costs for various ty pes of UST s ys tems. Twelve types of UST systems were considered: six with single

-walled tanks and piping and six with double

-walled tanks and piping. Three types of tanks were considered: steel with corrosion protection (sti

- P3®), fiberglass, and clad steel (ACT 100®). Two ty pes of piping were considered: fiberglass and flexible plastic. E 2 

### Inc. selected installers to interview by consulting Robert Renkes, executive vice president of the Petroleum Equipment Institute (PEI), and Way ne Geyer, executive vice president of the Steel Tank Institute (STI). Mr. Renkes suggested searching for installers on PEI ’s searchable online directory

. 1 

### Mr. Geyer provided a list of installers, most o f whom were not STI members. E 2 

### Inc. narrowed down Mr. Geyer’s list by eliminating installers not listed in PEI’s directory . From this narrowed

- down list, E 2 

### Inc. selected installers with the goal of representing as many of the country’s regions as possible. In order to include an installer from Florida, E 2 

### Inc. selected the installer in PEI’s directory with the most Florida branch locations. E 2 

### Inc. also selected from PEI’s directory an installer with many

branches in the Southeast, to replace another, unresponsive Southeast installer. The purpose of selecting installers from various regions was to take into account regional differences in UST system costs, stemming from differences in labor costs (union versus non

-union), regulatory requirements, and the overall cost of doing business. In addition to the ty

pes of tanks and piping, the installers were given the following specifications. Each facility ’s equipment includes three USTs, 300 feet of piping, four dispensers, a point

- of

- sale (POS) system, a tank monitoring s ystem (if one is usually included), and an intercom (if one is usually included). The installers were asked to assume that the tanks are not compartmented or manifolded, there is no stage one or two vapor recovery, and the installation is at a virgin site (that is, there is no previous contamination to clean up). The cost of installation includes excavation, tank installation, piping installation, dispenser installation, ancillary equipment installation, and paving. Most of the install ers stated that they were given insufficient information about the UST system components and site

- specific conditions, rendering their cost estimates rough and inaccurate. Site

- specific conditions and the specific ty pes of equipment installed are both highl y variable, yi elding wide ranges of potential costs for each UST s ystem specified. Appendix A lists variables that the installers said would assist in cost estimation. Several installers stated that 300 feet of piping is either insufficient or unrealistic for the ty pes of facilities that are currently being built; they said that 500 to 1,000 feet of piping is ty pical for facilities with three tanks.

1 http://www.pei.org/search/advanced.asp

### July

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– UST Cost Comparison 2 Table 1 presents a summary of the installers’ cost estimates. Appendix B presents each installer’s co st estimates. Not all installers provided cost estimates for every ty pe of UST system. Because of the piecemeal nature of the responses and the small sample size, the figures in Table 1 should be interpreted cautiously. For example, the installers based in California and Florida did not estimate costs for steel tanks or for single

-walled systems, because they

do not install such systems. Because of these omissions, and the fact that the California and Florida installers reported much higher installation costs than did the other installers, the average installation cost for double

-walled fiberglass and clad steel systems is skewed upwards. The installation costs from installers who reported costs for a wider array

of UST systems indicate that there does not appear to be a large variation in total installation cost across UST system ty pes. A smaller skewing effect resulted from another installer who provided figures only for s ys tems with fiberglass piping, because he does not use flexible plastic piping. Because his cost estimates were higher than average, the average costs in the summary table for all of the systems with fiberglass piping are inflated relative to the flexible plastic systems. Most installers did report higher costs for systems with fiberglass piping, but the difference is not as large as the summary table implies. For those wishing to compare the costs of single

-walled UST systems with the costs of double

-walled UST s ystems, Table 2 provides such a comparison b y presenting means that exclude those installers who did not provide cost estimates for both types of s ystems. By excluding those installers, a more realistic cost comparison is possible. However, the small sample size is still a concern; the means are based on data from four to five installers. When respondents provided a numerical range as an answer, this report uses the midpoint of the range as representative of a ty pical value.

### July

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– UST Cost Comparison 3 Ta ble 1: Mean UST Equipment and Installation Costs. Ty pe Of Ta nks Ty pe of

Piping Cost of

Equipment Cost of

Installation Total Cost
Fiberglass 129,328 87,259 216,587 Flexible Plastic 124,219 79,625 203,844 Fiberglass 132,007 92,386 224,393 Flexible Plastic 127,344 80,875 208,219 Fiberglass 122,710 91,074 213,784 Flexible Plastic 112,292 81,833 194,125
Fiberglass 154,153 91,458 245,611 Flexible Plastic 147,619 82,500 230,119 Fiberglass 145,499 126,215 271,715 Flexible Plastic 135,979 124,550 260,529 Fiberglass 137,067 122,941 260,008 Flexible Plastic 130,063 122,217 252,279 Notes: 1) The costs of different UST system types should not be compared without consulting the individual installers' data provided in Appendix B. Because of the small sample siz e and piecemeal nature of the responses, the mean costs of some UST system types are skewed upward relative to other system types. 2) Each of these mean values does not include installers who did not provide cost estimates for that UST system type. 3) Equipment cost includes: three USTs, 300 feet of piping, four dispensers, and a POS system. Most installers also included a tank monitoring system and intercom. 4) Installation cost includes: excavation; tank, piping, dispenser, and ancillary equipment installation; and paving. Single-Walled Tanks & Piping

Fiberglass

Clad Steel (ACT 100) Steel w /CP (sti-P3) Steel w /CP (sti-P3)

Fiberglass

Clad Steel (ACT 100) Double-Walled Tanks & Piping

### July

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– UST Cost Comparison 4

Singlewalled Doublewalled %

Difference Singlewalled Doublewalled %

Difference Singlewalled Doublewalled %

Difference Fiberglass 129,328 154,153 19% 87,259 91,458 5% 216,587 245,611 13% Flexible Plastic 124,219 147,619 19% 79,625 82,500 4% 203,844 230,119 13% Fiberglass 132,007 160,299 21% 92,386 94,041 2% 224,393 254,341 13% Flexible Plastic 127,344 149,719 18% 80,875 83,500 3% 208,219 233,219 12% Fiberglass 122,710 141,117 15% 91,074 95,447 5% 213,784 236,564 11% Flexible Plastic 112,292 128,792 15% 81,833 85,167 4% 194,125 213,958 10% Notes: 1) "Single-walled" denotes single-walled tanks and piping. "Double-walled" denotes double-walled tanks and piping. 2) Equipment cost includes: three USTs, 300 feet of piping, four dispensers, and a POS system. Most installers also included a tank monitoring system and intercom. 3) Installation cost includes: excavation; tank, piping, dispenser, and ancillary equipment installation; and paving. Cost of Equipment Cost of Installation Total Cost Ty pe Of Ta nks Ty pe of

Piping Ta ble 2: Mean Costs and Comparisons Between Single- and Double-Walled UST Systems, Excluding Installers Who Did Not Provide Cost Estimates for Both Single-Walled and Double-Walled Systems.

Steel w /CP (sti-P3)

Fiberglass

Clad Steel (ACT 100)

### July

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– UST Cost Comparison 5 Installers Interviewed:

 Bruce Brown of Adams Tank and Lift, Inc. based in Florida
 Duane Grippe of O’Day Equipment, Inc. based in North Dakota
 Ken Korneychuk, Denver division manager of Eaton Sales and Service Co. based in Colorado
 Bruce Larson, president of Oscar W. Larson Co. based in Michigan
 Archie Muckenfus, operations manager of Southern Pump and Tank Co. based in North Carolina
 Jerry Thomas, president of C.E. Thomas Co. based in California
 Bill White, president of White’s Pump Service and Supply, Inc. based in Texas All interviews were conducted in June 2006.
Note: In a May 31, 2006 telephone call with E 2 

### Inc., OUST’s subject matter expert for secondary containment, Paul Miller, instructed E 2 

### Inc. to include the cost of equipment in the estimate. Paul also clarified that, by “secondarily contained UST system,” the task order means double-walled tanks and double

-walled piping, not a single

-walled tank installed within an excavation liner

### July

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– UST Cost Comparison 7 Appendix A: Variables That Would Aid In Cost Estimation 1. Size of tanks 2. Area of paving (tank slab, canop y slab, parking area?) 3. Depth and type of pavement (asphalt or concrete) 4. Ty pe and number of dispensers 5. Ty pe of tank monitoring system 6. Ty pe of intercom 7. Ty pe and number of point

- of

- sale (POS) s ystems 8. Ty pe of excavation (rocky, sandy, high water table?) 9. Does the excavation necessitate shoring (sandy soil)? 10. Location of facility

relative to installer and tank manufacturer (transportation costs, per diem for workers)

### July

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– UST Cost Comparison 9 Appendix B: Installers’ Cost Estimates Note: Blank rows indicate that the installer did not provide cost estimates for that type of UST system. Blank columns indicate that the installer did not provide a separate cost estimate for that specific equipment or installation component. For all installers, the total equipment cost includes three USTs, 300 feet of piping, four dispensers, 2 

### and a POS s ystem. Most installers also included a tank monitoring system and intercom in the total equipment cost. For all installers, the total installation cost includes all elements of the installation.

2 Except for Eaton Sales and Service Co., whose total equipment cost is based on four to six dispensers.

### July

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– UST Cost Comparison 10 Ta ble B-1: Mean Itemized UST Equipment and Installation Costs.

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 27,000 1,650 42,000 12,500 12,000 2,188 129,328 22,575 11,474 11,419 8,698 11,197 24,136 87,259 216,587 Flexible Plastic 27,000 6,000 42,000 12,500 12,000 2,188 124,219 23,750 9,750 8,750 6,375 10,500 23,125 79,625 203,844Fibergl ass 33,000 1,650 42,000 12,500 12,000 2,188 132,007 23,985 15,026 11,419 8,698 11,197 24,300 92,386 224,393 Flexible Plastic 33,000 6,000 42,000 12,500 12,000 2,188 127,344 23,750 11,000 8,750 6,375 10,500 23,125 80,875 208,219Fibergl ass 33,000 1,650 42,000 12,500 12,000 2,188 122,710 23,219 12,843 12,523 9,873 11,596 23,920 91,074 213,784 Flexible Plastic 33,000 6,000 42,000 12,500 12,000 2,188 112,292 25,000 11,000 9,000 7,167 10,750 22,500 81,833 194,125
Fibergl ass 33,000 1,650 42,000 12,500 12,000 2,188 154,153 22,975 12,174 14,517 8,698 11,197 24,136 91,458 245,611 Flexible Plastic 33,000 6,000 42,000 12,500 12,000 2,188 147,619 24,250 10,625 10,250 6,375 10,500 23,125 82,500 230,119Fibergl ass 39,000 7,717 42,250 11,500 11,500 1,958 145,499 35,639 20,978 19,512 9,284 12,048 33,472 126,215 271,715 Flexible Plastic 39,000 9,167 42,250 11,500 11,500 1,958 135,979 37,417 21,300 17,500 7,833 11,800 34,217 124,550 260,529Fibergl ass 37,000 7,717 42,250 11,500 11,500 1,958 137,067 33,911 19,312 19,512 9,284 12,048 33,354 122,941 260,008 Flexible Plastic 37,000 9,167 42,250 11,500 11,500 1,958 130,063 36,583 19,500 17,500 7,833 11,800 34,217 122,217 252,279Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

### July

3, 2006 SC

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– UST Cost Comparison 11 Ta ble B-2: Adams T ank and Lift, Inc. (Florida).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass 37,500 10,500 48,000 10,000 11,000 1,500 118,500 70,000 60,000 35,000 5,000 10,000 52,800 232,800 351,300 Flexible Plastic 37,500 10,500 48,000 10,000 11,000 1,500 118,500 70,000 60,000 35,000 5,000 10,000 52,800 232,800 351,300Fibergl ass 40,500 10,500 48,000 10,000 11,000 1,500 121,500 65,000 55,000 35,000 5,000 10,000 52,800 222,800 344,300 Flexible Plastic 40,500 10,500 48,000 10,000 11,000 1,500 121,500 65,000 55,000 35,000 5,000 10,000 52,800 222,800 344,300 Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost

### July

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– UST Cost Comparison 12 Ta ble B-3: Eaton Sales and Service Co. (Colorado).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 13,500 1,375 123,875 40,000 13,000 14,000 12,500 11,500 25,000 116,000 239,875 Flexible Plastic 13,500 1,375 118,875 40,000 13,000 10,000 12,500 11,500 25,000 112,000 230,875Fibergl ass 13,500 1,375 139,875 40,000 18,000 14,000 12,500 11,500 25,000 121,000 260,875 Flexible Plastic 13,500 1,375 136,375 40,000 18,000 10,000 12,500 11,500 25,000 117,000 253,375Fibergl ass 13,500 1,375 123,875 40,000 13,000 14,000 12,500 11,500 25,000 116,000 239,875 Flexible Plastic 13,500 1,375 118,875 40,000 13,000 10,000 12,500 11,500 25,000 112,000 230,875
Fibergl ass 13,500 1,375 148,375 40,000 13,000 14,000 12,500 11,500 25,000 116,000 264,375 Flexible Plastic 13,500 1,375 143,475 40,000 13,000 10,000 12,500 11,500 25,000 112,000 255,475Fibergl ass 13,500 1,375 164,875 40,000 18,000 14,000 12,500 11,500 25,000 121,000 285,875 Flexible Plastic 13,500 1,375 159,875 40,000 18,000 10,000 12,500 11,500 25,000 117,000 276,875Fibergl ass 13,500 1,375 133,575 40,000 13,000 14,000 12,500 11,500 25,000 116,000 249,575 Flexible Plastic 13,500 1,375 130,375 40,000 13,000 10,000 12,500 11,500 25,000 112,000 242,375 Note: The total equipment cost for this installer includes four to six dispensers. Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

Fibergl ass

### July

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– UST Cost Comparison 13 Ta ble B-4: Oscar W. Larson Co. (Michigan).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 48,000 15,000 127,000 20,000 15,000 20,000 5,000 10,000 20,000 90,000 217,000 Flexible Plastic 48,000 15,000 122,000 20,000 15,000 15,000 5,000 10,000 20,000 85,000 207,000Fibergl ass 48,000 15,000 118,000 20,000 15,000 20,000 5,000 10,000 20,000 90,000 208,000 Flexible Plastic 48,000 15,000 113,000 20,000 15,000 15,000 5,000 10,000 20,000 85,000 198,000Fibergl ass 48,000 15,000 124,000 20,000 15,000 20,000 5,000 10,000 20,000 90,000 214,000 Flexible Plastic 48,000 15,000 119,000 20,000 15,000 15,000 5,000 10,000 20,000 85,000 204,000
Fibergl ass 48,000 15,000 167,000 22,000 18,000 25,000 5,000 10,000 20,000 100,000 267,000 Flexible Plastic 48,000 15,000 162,000 22,000 18,000 20,000 5,000 10,000 20,000 95,000 257,000Fibergl ass 48,000 15,000 159,000 22,000 17,000 25,000 5,000 10,000 20,000 99,000 258,000 Flexible Plastic 48,000 15,000 154,000 22,000 17,000 20,000 5,000 10,000 20,000 94,000 248,000Fibergl ass 48,000 15,000 162,000 22,000 18,000 25,000 5,000 10,000 20,000 100,000 262,000 Flexible Plastic 48,000 15,000 157,000 22,000 18,000 20,000 5,000 10,000 20,000 95,000 252,000 Cost Of Equipment Cost Of Installation

Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks

### July

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– UST Cost Comparison 14 Ta ble B-5: O'Day Equipment, Inc. (North Dakota).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 160,000 20,000 6,000 7,000 4,000 10,000 25,000 72,000 232,000 Flexible Plastic 163,000 20,000 6,000 8,000 4,000 10,000 25,000 73,000 236,000Fibergl ass 154,000 20,000 6,000 7,000 4,000 10,000 25,000 72,000 226,000 Flexible Plastic 161,000 20,000 6,000 8,000 4,000 10,000 25,000 73,000 234,000Fibergl ass Flexible PlasticFibergl ass 188,000 20,000 6,500 10,000 4,000 10,000 25,000 75,500 263,500 Flexible Plastic 186,000 20,000 6,500 9,000 4,000 10,000 25,000 74,500 260,500Fibergl ass 182,000 20,000 6,500 10,000 4,000 10,000 25,000 75,500 257,500 Flexible Plastic 180,000 20,000 6,500 9,000 4,000 10,000 25,000 74,500 254,500Fibergl ass 178,000 20,000 6,500 10,000 4,000 10,000 25,000 75,500 253,500 Flexible Plastic 177,000 20,000 6,500 9,000 4,000 10,000 25,000 74,500 251,500 Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping

### July

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– UST Cost Comparison 15 Ta ble B-6: Southern Pump and T ank Co. (North Carolina).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 27,000 1,650 36,000 9,000 12,000 3,000 88,650 15,000 5,000 10,000 4,000 22,500 56,500 145,150 Flexible Plastic 27,000 6,000 36,000 9,000 12,000 3,000 93,000 15,000 5,000 2,000 4,000 22,500 48,500 141,500Fibergl ass 33,000 1,650 36,000 9,000 12,000 3,000 94,650 15,000 5,000 10,000 4,000 22,500 56,500 151,150 Flexible Plastic 33,000 6,000 36,000 9,000 12,000 3,000 99,000 15,000 5,000 2,000 4,000 22,500 48,500 147,500Fibergl ass 33,000 1,650 36,000 9,000 12,000 3,000 94,650 15,000 5,000 10,000 4,000 22,500 56,500 151,150 Flexible Plastic 33,000 6,000 36,000 9,000 12,000 3,000 99,000 15,000 5,000 2,000 4,000 22,500 48,500 147,500
Fibergl ass 33,000 1,650 36,000 9,000 12,000 3,000 94,650 15,000 5,000 10,000 4,000 22,500 56,500 151,150 Flexible Plastic 33,000 6,000 36,000 9,000 12,000 3,000 99,000 15,000 5,000 2,000 4,000 22,500 48,500 147,500Fibergl ass 39,000 1,650 36,000 9,000 12,000 3,000 100,650 15,000 5,000 10,000 4,000 22,500 56,500 157,150 Flexible Plastic 39,000 6,000 36,000 9,000 12,000 3,000 105,000 15,000 5,000 2,000 4,000 22,500 48,500 153,500Fibergl ass 33,000 1,650 36,000 9,000 12,000 3,000 94,650 15,000 5,000 10,000 4,000 22,500 56,500 151,150 Flexible Plastic 33,000 6,000 36,000 9,000 12,000 3,000 99,000 15,000 5,000 2,000 4,000 22,500 48,500 147,500 Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping

### July

3, 2006 SC

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– UST Cost Comparison 16 Ta ble B-7: C. E. T homas Co. (California).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass Flexible PlasticFibergl ass 40,500 11,000 37,000 10,000 98,500 57,500 29,000 16,500 17,500 60,000 180,500 279,000 Flexible Plastic 40,500 11,000 37,000 10,000 98,500 57,500 29,000 16,500 17,500 60,000 180,500 279,000Fibergl ass 37,500 11,000 37,000 10,000 95,500 57,500 29,000 16,500 17,500 60,000 180,500 276,000 Flexible Plastic 37,500 11,000 37,000 10,000 95,500 57,500 29,000 16,500 17,500 60,000 180,500 276,000Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

### July

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– UST Cost Comparison 17 Ta ble B-8: White's Pump Service and Supply, Inc. (T exas).

3 USTs Piping

(300 Feet) 4 Dis pensers POS

System Tank

Mon. System Intercom Total Ex cav ation Tanks Piping Dis pensers Ancilla ry Pav in g TotalFibergl ass 147,114 17,875 18,370 6,093 17,991 13,288 28,180 101,797 248,911 Flexible PlasticFibergl ass 153,508 24,927 31,130 6,093 17,991 13,288 29,002 122,431 275,939 Flexible PlasticFibergl ass 148,314 17,875 18,370 6,093 17,991 13,288 28,180 101,797 250,111 Flexible PlasticFibergl ass 172,741 17,875 18,370 13,584 17,991 13,288 28,180 109,288 282,029 Flexible PlasticFibergl ass 194,971 24,972 19,370 13,584 17,991 13,288 29,002 118,207 313,178 Flexible PlasticFibergl ass 174,241 17,875 18,370 13,584 17,991 13,288 28,180 109,288 283,529 Flexible Plastic Ty pe Of Ta nks Cost Of Equipment Cost Of Installation

Fibergl ass Clad Steel (ACT 100) Ty pe of Piping

Steel w/ CP (sti-P3) Steel w/ CP (sti-P3)

Fibergl ass
Clad Steel (ACT 100) Double-Walled T ank & Piping Single-Walled T ank & Piping Total Cost