Development of Chemical Precipitation Purchased Equipment Costs:

Tanks

Purchased Equipment Costs are the sum of the following cost elements:

(1) Pump Costs

(2) Tank Costs

(3) Chemical Feed System Costs

(4) Mixer Costs

(5) Clarifier Costs

(6) Filter Press Costs

(7) Sand Filter Costs

This Excel workbook consists of the following worksheets:

FRP vs Steel

Shop-built steel tanks

Field-built steel tanks

Legend

Develops a relationship between tank volume and field-built tank and freight costs. 

Additionally, internal surface area is calculated for use in developing coating costs.

Vendor provided data. See DCN SE01825.A17 for data used as the source for these 

analyses.

Vendor provided data. See See DCN SE01825.A14 for data used as the source for these 

analyses.

Each cost component includes the cost of freight and associated ancillary equipment such as piping, valves, and 

controllers.

This Excel workbook documents EPA's derivation of cost element (2) using information provided by industry vendors.

EPA determined carbon steel tank costs for each plant using the equations derived in this workbook. EPA determined 

whether carbon steel or FRP tanks would be used for each type of tank based on the cost and detailed comparisons 

documented in this workbook.

Develops FRP tank costs and compares them to carbon steel tank costs developed in the 

following worksheets. FRP tank costs are based on phone conversations with a vendor 

documented in DCNs SE01825.A10 and A12. A cost per gallon is used to compare the 

tanks.

Develops a relationship between tank volume and shop-built tank and freight costs. The 

coating cost equation developed in the subsequent worksheet is also applied to develop total 

costs.
freight costs. 

oating costs.

ource for these 

he source for these 

 valves, and 

ndustry vendors.

 EPA determined 

ed comparisons 

sts developed in the 

ons with a vendor 

d to compare the 

 freight costs. The 

applied to develop total 
Size FRP Tank 

Cost, $ FRP Tank Qty FRP tank size, gal

FRP Freight 

Cost, $ FRP Total Cost, $ Steel (shop) qty

2000 2875 1 2000 $ 1,463 $ 4,338 1

34100 49018.75 1 34100 $ 6,925 $ 55,944 1

45000 64687.5 1 45000 $ 8,062 $ 72,750

70000 161000 1 70000 $ 10,271 $ 171,271 1

90000 207000 1 90000 $ 11,788 $ 218,788

120300 276690 1 120300 $ 13,820 $ 290,510 2

290100 667230 2 145050 $ 30,626 $ 697,856 5

847500 1949250 4 211875 $ 75,389 $ 2,024,639 13

1522800 3502440 7 217543 $ 133,854 $ 3,636,294 22

250,000 gal Vendor provided information. See DCN SE01825.A10 for d

70,000 gal Vendor provided information. See DCN SE01825.A13 for d

30,000 gal Vendor provided information. See DCN SE01825.A15 for d

10,000,000 gal Vendor provided information. See DCN SE01825.A15 for d

Max FRP Tank Size:

Max Steel Tank (Shop-built) Size:

Min Steel Tank (Field-built) Size:

Max Steel Tank (Field-built) Size:

EPA determined field-built carbon steel tanks would be costed for the equalization tank and clarifier tank, and FRP tanks wou

tanks, based on an assessment of responses to the Steam Electric Survey (see DCN SE01825.A81).
Steel (shop) Total 

Cost, $

Steel (field) 

Total Cost, $ FRP $/gal Steel (shop) $/gal

Steel (field) 

$/gal

$ 9,125 NA $ 2.17 $ 4.56

$ 53,617 $ 500,000 $ 1.64 $ 1.57 $ 14.66

$ 1.62 $ -

$ 98,099 $ 2.45 $ 1.40

$ 2.43 $ -

$ 316,037 $ 591,000 $ 2.41 $ 2.63 $ 4.91

$ 1,763,324 $ 707,000 $ 2.41 $ 6.08 $ 2.44

$ 12,573,359 $ 972,000 $ 2.39 $ 14.84 $ 1.15

$ 37,295,051 $ 1,315,000 $ 2.39 $ 24.49 $ 0.86

mation. See DCN SE01825.A10 for data used as the source for this analysis.

mation. See DCN SE01825.A13 for data used as the source for this analysis.

mation. See DCN SE01825.A15 for data used as the source for this analysis.

mation. See DCN SE01825.A15 for data used as the source for this analysis.

d clarifier tank, and FRP tanks would be costed for all remaining 
Tank vol, gal $/gal Tank Cost, $

Freight cost, 

$

Internal surface area, 

sq ft Coating cost, $

2000 $ 3 $ 6,000 $ 650 247 $ 2,475

70000 $ 1 $ 70,000 $ 5,000 2310 $ 23,095

Coating cost: 10 $ per sq ft internal surface area Vendor provided information. See 

y = 0.9412x + 4117.6

R2 = 1

 $-

 $10,000

 $20,000

 $30,000

 $40,000

 $50,000

 $60,000

 $70,000

 $80,000

0 10000 20000 30000 40000 50000 60000 70000 80000

Tank C

ost, $

Tank vol, gal

Shop-built Steel Tank Cost

y = 0.064x + 522.06

R2 = 1

 $-

 $1,000

 $2,000

 $3,000

 $4,000

 $5,000

 $6,000

0 10000 20000 30000 40000 50000 60000 70000 80000

Freight cost, $

Tank vol, gal

Freight cost vs. Tank volume
Total cost, $

$ 8,475 7.48 gal/cu ft

$ 93,095

ovided information. See DCN SE01825.A18 for data used as the source for this analysis.

Conversion factors
Tank vol, gal Steel (field) cost* Height Diameter

Internal Surface 

Area, sq ft

34100 500,000 16 22 1485.973325

120300 591,000 24 32 3216.990877

290100 707,000 32 42 5607.742887

847500 972,000 48 56 10907.60969

1522800 1,315,000 54 72 16286.01632

* Includes freight and flake glass lining

Coating cost: 10 $ per sq ft internal surface area Vendor provided information. See DCN SE01

y = 2.0885x0.6282

R2 = 0.9998

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

0 500000 1000000 1500000 2000000

Internal Surface Area, sq ft

Tank vol, gal

Internal Surface Area, sq ft

y = -6E-08x2 + 0.628x + 503999

R2 = 0.9958

 -

 200,000

 400,000

 600,000

 800,000

 1,000,000

 1,200,000

 1,400,000

0 500000 1000000 1500000 2000000

Tank C

ost, $

Tank vol, gal

Field-built steel tank cost
ided information. See DCN SE01825.A18 for data use as the source for this analysis.