# Development of Chemical Precipitation Purchased

Equipment Costs: Chemical Feed Systems

The following email supports EPA’s development of purchased equipment cost equations for

chemical feed systems by documenting EPA's communication with a vendor regarding purchase

costs for chemical feed systems used in the Steam Elec tric cost model.From: "Troy Litherland" <TLitherland@enpro-tech.com>

To: "Kavya Kasturi" <Kavya.Kasturi@erg.com>

CC: "Jesse Kuntz" <JKuntz@enpro-tech.com>

Date: 7/6/2011 7:21 AM

Subject: RE: Cost request for lime feed systems

Hi Kavya,

I had a great 4th and hope you did as well.

I should have been more clear on the metering pump costing. $15K is a conservative figure that would cover multiple pump types and mfgs.

Small peristaltic pumps with integral controls up t o 100 gph or so capacity are available with a capit al cost of appx. $5K.

Above 100 gph we would need to review the chemical, discharge pressure required, etc to determine the pump type. The controls requirements

would also have to be known. Skid mounted systems with multiple pumps, pre-piped and pre-wired to mi nimize installation cost by the

contractor will cost appx. $15K per feed point.

Hope this helps.

Thanks,

Troy

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com]

Sent: Tuesday, July 05, 2011 3:35 PM

To: Troy Litherland

Cc: Jesse Kuntz

Subject: RE: Cost request for lime feed systems

Hi Troy,

Thanks again for all of your help! I really appreci ate it. I hope you had a great 4th of July weekend!

I have one more clarification question regarding ou r conversation last week. You mentioned that for li quid feed systems, if the addition rate is

under 100 gph $5,000 would be a reasonable cost es timate and if over 100 gph, $15,000 would be a reas onable cost estimate. Did I understand

that correctly? Would that mean that if the plant n eeded to add over 100 gph it might be more cost eff ective to get 2 smaller systems using

smaller pumps as opposed to one big system? Also, i s there a feed rate that would require multiple fee d systems or is the $15,000 estimate

conservative enough to accomodate very high feed ra tes?

Thanks again,

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (240) 654-2524

kavya.kasturi@erg.com

>>> "Troy Litherland" 06/30/11 2:00 PM >>>

If you don’t want to change out the tote more than once per day, 10 gph of chemical, you may want to c onsider bulk storage. You will need a

fork truck to move the totes. Some of the tote des igns are stackable. It will also depend on the req uirements by the state for chemical inventory

required.

Thanks,

Troy

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com]Sent: Thursday, June 30, 2011 3:50 PM

To: Troy Litherland

Cc: Jesse Kuntz

Subject: RE: Cost request for lime feed systems

Thanks Troy! I have one last question for now, rega rding liquid feed systems. We're trying to determin e whether the plants will store the liquid

chemicals in totes or in tanks. We assume for small er plants with smaller addition rates it would make sense to use totes while for larger plants

with larger addition rates, tanks would make most s ense. Based on your experience, for liquid feed sys tems, is there a minimum gallons per day

addition rate that would trigger a plant storing th e chemical in tanks vs. in totes? Any recommendatio ns you have would be great.

Thanks again for your help!

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (240) 654-2524

kavya.kasturi@erg.com

>>> "Troy Litherland" <TLitherland@enpro-tech.com> 6/30/2011 1:16 PM >>>

Hi Kavya,

The application below will require four (4) 14 feet diameter x 82 feet high silos. Each silo will be approximately $330,000.

You may want to consider utilizing quicklime with s lakers mounted in the silos to reduce the chemical volume. Going with quicklime would

decrease the number of silos to (3) but the equipme nt price per silo will increase with the addition o f a slaker and lime slurry storage tank.

Hope this helps.

Troy Litherland

Enpro Technologies

4225 NE Port Dr.

Lee’s Summit, MO 64064

Office: 815.939.0703

Cell: 816.377.5344

Fax: 816.795.6030

Email: tlitherland@enpro-tech.com

Website: www.enpro-tech.com

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com]

Sent: Thursday, June 30, 2011 2:03 PM

To: Troy Litherland

Cc: Jesse Kuntz

Subject: RE: Cost request for lime feed systems

Hi Troy,Thanks for getting back to me so quickly! Could you also provide us an estimate for the largest size s ystem? The details for the largest size

system are as follows:

Lime Dosage, g/min

24381

10% Lime Slurry add'n rate, gal/min

70.95

Lime Storage*, cu ft

37251.34

If it makes more sense to use multiple systems/silo s for this size system, please let me know.

Thanks again!

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (240) 654-2524

kavya.kasturi@erg.com

>>> "Troy Litherland" <TLitherland@enpro-tech.com> 6/30/2011 11:56 AM >>>

Hi Kavya,

The equipment price for the 600 cubic foot silo wit h two (2) peristaltic pumps for 10% lime slurry wil l be $230,000.

Equipment startup/operator training and freight are not included in the price above. General data she et and preliminary drawings are attached for

reference.

Please let us know if you require additional inform ation.

Thanks for the opportunity to work on this project.

Sincerely,

Troy Litherland

Enpro Technologies

4225 NE Port Dr.

Lee’s Summit, MO 64064

Office: 815.939.0703Cell: 816.377.5344

Fax: 816.795.6030

Email: tlitherland@enpro-tech.com

Website: www.enpro-tech.com

From: Kavya Kasturi [mailto:Kavya.Kasturi@erg.com]

Sent: Thursday, June 30, 2011 1:28 PM

To: Troy Litherland

Subject: Cost request for lime feed systems

Hi Troy,

Thanks for taking the time to talk to me today. Att ached is my spreadsheet including calculations of l ime dose, lime slurry addition rate, and lime

storage estimates. The first tab includes a summary of what I believe is the important information. Th e 2nd tab shows all the calculations.

Please let me know if any additional information wo uld be helpful. Thanks again for your help!

Kavya

Kavya P. Kasturi, Environmental Engineer

Eastern Research Group, Inc.

Phone: (240) 654-2524

kavya.kasturi@erg.com