 
BEFORE THE ILLINOIS POLLUTION CONTROL BOARD 
Wisconsin Electric Power Company, 
d/b/a 
We Energies, 
Petitioner, 
v. 
ILLINOIS ENVIRONMENTAL 
PROTECTION AGENCY, 
Respondent. 
) 
) 
) 
) 
) 
) 
) 
) 
) 
) 
) 
PCB 
----
(Appeal - Beneficial Use 
Determination) 
NOTICE OF FILING 
To:   
Pollution Control Board 
Attn: Clerk 
100 West Randolph 
James 
R. Thompson Center 
Suite 
11-500 
Chicago, IL 60601-3218 
Division of Legal Counsel 
Illinois Environmental Protection Agency 
1021 North Grand Avenue East 
P.O. Box 19276 
Springfield, IL 62794-9276 
PLEASE TAKE NOTICE that on July 30,2009, we filed with the Illinois 
Pollution Control Board the attached 
Petition for Review 
and 
Appearance of Cynthia A. 
Faur, 
a copy of which is herewith served upon you. 
Dated: July 
30, 2009 
Cynthia 
A. 
Faur 
Quarles 
& 
Brady LLP 
300 
North LaSalle Street 
Suite 4000 
Chicago, Illinois 60654-3422 
(312) 
715-5000 
QB\8408068.2 
Respectfully submitted, 
Wisconsin Electric 
Power Company,
CERTIFICATE OF SERVICE 
The undersigned, an attorney, certify that I have served upon the individuals named on 
the attached Notice 
of Filing true and correct copies of the 
Petition for Review 
and 
Appearance 
of Cynthia A. Faur 
via First Class Mail, postage prepaid on July 30,2009. 
QB\S40S06S.2
BEFORE THE ILLINOIS POLLUTION CONTROL BOARD 
Wisconsin Electric Power Company, 
d/b/a We Energies, 
Petitioner, 
v. 
ILLINOIS ENVIRONMENTAL 
PROTECTION AGENCY, 
Respondent. 
) 
) 
) 
) 
) 
) 
) 
) 
) 
) 
) 
Petition for Review 
PCB __ _ 
(Permit Appeal- Beneficial 
Use Determination) 
Wisconsin Electric 
Power Company (d/b/a We Energies), by and through 
its attorneys, Cynthia 
A. 
Faur and Quarles and Brady LLP, hereby petitions the Illinois 
Pollution Control Board (the "Board") for review of the denial of We Energies' Request 
for a Beneficial 
Use Determination pursuant to the § 3.135(b) ofthe Illinois 
Environmental 
Protection Act (the "Act"), 415 ILCS 5/3 . 135(b ). This petition for review 
is submitted pursuant to 
§§ 3.135(b) and 40 of the Act, 415 ILCS 5/3. 135(b) and 5/40, 
and in accordance with 35 Ill. Admin. Code Part 105. In support of its petition, We 
Energies states as follows: 
Background 
1.     
We Energies is an electric generating utility with coal-fired power plants located 
in southeastern Wisconsin. Currently, We Energies operates state-of-the-art Air Quality 
Control 
Systems ("AQCS") at its Pleasant Prairie Power Plant ("P4"). This plant is 
located in 
Pleasant Prairie, Wisconsin, approximately 3 miles north ofthe Illinois-
Wisconsin border. The 
AQCS includes a forced oxidation wet limestone flue gas 
desulfurization system 
("FGD") to reduce sulfur dioxide ("S02") emissions. 
QB\841 0989.3
2.    
We Energies is in the process of expanding and upgrading its Oak Creek Power 
Plant ("OCPP"), 
also located in southeastern Wisconsin. Like at P4, OCPP emission 
controls will include similar FGD systems. 
3.    
The operation of the FGD system produces a calcium sulfate dihydrate 
(CaS04-2H20) product, also know as gypsum. 
4.    
We Energies is committed to the beneficial use of the gypsum created through the 
operation 
of its FGD systems. The primary use for We Energies' gypsum has been in the 
manufacture 
of wallboard. In 2007, however, We Energies received inquiries from local 
farmers in southeastern Wisconsin regarding availability 
of their gypsum for agricultural 
purposes. As a result 
of these inquiries, We Energies sought to diversify the beneficial 
use 
of its gypsum product beyond wallboard production and into the agricultural 
marketplace. In March 
2008, We Energies received a Conditional Grant of Exemption 
(the 
"Exemption") from the Wisconsin Department of Natural Resources ("WDNR"). 
The Exemption allows gypsum, produced at P4, to be used as an alternative to natural 
gypsum in appropriate agricultural applications. In May 
2008, the Wisconsin 
Department 
of Agriculture, Trade and Consumer Protection ("DA TCP") issued We 
Energies a Soil and 
Plant Additive License (No. 65-017311) to distribute gypsum in 
Wisconsin. Copies 
of the Exemption and DATCP license were included as part of the 
Request for a Beneficial 
Use Determination (the "Request") submitted by We Energies to 
the Illinois Environmental Protection Agency ("IEP A" or the "Agency"), a copy of which 
is attached 
as Exhibit 
A. 
5.    
Agricultural benefits of gypsum application include: (1) serving as a source of 
sulfur and calcium, two plant macronutrients; (2) reclaiming productivity of high sodic 
QB\841 0989.3 
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Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
soils; (3) improving soil aggregation, which in tum increases water infiltration; (4) 
reducing soil crusting and soil runoff; and (5) reducing phosphorus runoff 
by reducing 
the availability 
of phosphorus in soil. 
6.     
By the end of2008, We Energies reported to WDNR and DATCP that it had 
distributed approximately 
7,000 tons of gypsum for use in agricultural operations in 
Wisconsin. In 
2009, to date, We Energies is on track to exceed the 2008 quantity of 
gypsum used in Wisconsin agriculture. 
7.     
Because of the success and acceptance of We Energies' gypsum by Wisconsin 
farmers, 
We Energies received inquiries from farmers located in Illinois regarding the 
availability 
of gypsum for use in the state. Given the proximity of P4 to the Illinois state 
line, We Energies would like to make its gypsum available to farmers in northern Illinois. 
To facilitate this objective, 
We Energies met with representatives from IEPA Bureau of 
Water on April 1,2009 and gave a presentation concerning its Request (the 
"Presentation"). 
1 
A copy of the Presentation, which was also provided to the Agency at 
the time, is attached as Exhibit B. 
On April 1, 2009, We Energies also hand delivered the 
Request, which was submitted pursuant to 415 ILCS 5/3.135(b), to the Agency. 
8.     
Following the April 1,2009 meeting, We Energies provided additional 
information (via email to Mr. Al Keller dated April 
6, 2009) which also restated their 
offer to supply any additional information the Agency required to act on their Request. 
A copy 
of this correspondence is attached as Exhibit C. We Energies staff also made 
1 When We Energies fIrst approached the Agency concerning a benefIcial use determination for its 
gypsum, there was some confusion as to whether the request should be submitted to the Bureau 
of Land or 
the Bureau 
of Water or whether both bureaus would be involved in this determination. After discussions 
with both Bureau 
of Land and Bureau of Water personnel, We Energies met with the Bureau of Water 
because land application 
of materials similar to We Energies' gypsum is generally permitted by the Bureau 
of Water. 
QB\841 0989.3 
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* * * * * PCB 2010-011 * * * * *
numerous attempts to contact the Bureau of Water personnel to determine whether the 
Agency needed additional information 
to respond to its Request. Bureau of Water, 
however, did not contact We Energies following the April 
1, 2009 meeting and the 
submittal 
of the Request. 
9.     
On July 6,2009, We Energies received a denial of its Request, dated June 30, 
2009. 
A copy ofthe denial is attached as Exhibit D. Per the denial, the Request was 
received by the Bureau 
of Land on June 24,2009,84 days after receipt of the Request by 
the Agency. 
10.   
The denial of We Energies' Request is timely appealed within 35 days of the 
service 
of the denial. 415 ILCS 5/3.135(b); 5/40(a); 35 Ill. Admin. Code § 105.206. 
Grounds for Appeal 
11.   
Gypsum created by We Energies FGD systems meets the definition of a coal 
combustion waste, as defined in § 3.140 
ofthe Act. 415 ILCS 5/3.140. Section 3.l35 of 
the Act defines those instances where a coal combustion waste, like We Energies' 
gypsum, is beneficially used and appropriately re-classified 
as a coal combustion by-
product 
("CCB"). 
See 
415 ILCS 5/3.l35. Section 3.l35(a) sets forth certain enumerated 
approved uses for CCBs, including use 
as a functional substitute for agricultural lime as a 
soil conditioner. 
See 
415 ILCS 5/3.135(a)(6). Section 3.l35(b) sets forth the legislative 
intention 
to "encourage and promote the utilization of CCB in productive and beneficial 
applications" other than those specifically included in subpart (a) of this provision. 415 
ILCS 5/3.l35(b). Specifically, § 3.135(b) provides that the Agency must make a written 
beneficial use determination that coal combustion waste is a CCB 
if the applicant 
demonstrates that: 
QB\841 0989.3 
4
(1) the use will not cause, threaten or allow the discharge of any contaminant into 
the environment; (2) the use will otherwise protect human health, safety and the 
environment; and (3) the use constitutes a legitimate use 
of the coal combustion 
waste as an ingredient or raw material that is an effective substitute for an 
analogous ingredient or raw material. 
415 ILCS 
5/3. 
135(b). 
12.   
In its Request, We Energies proposed to use gypsum as a fertilizer, which is not 
one 
ofthe enumerated uses of CCB contained in § 3. 135(a) ofthe Act. Accordingly, We 
Energies provided detailed information in its Request, including the attachments thereto, 
that demonstrated its proposed use 
of gypsum satisfied each of the three criteria 
contained in § 3. 135(b) of the Act for use-specific CCB determinations. 415ILCS 
5/3/135(b). 
13.   
In the denial, IEP A stated that We Energies did not meet the criteria of § 3.13 5 (b) 
of the Act, 415 ILCS 
5/3.13 
5(b), in that it failed to demonstrate that the activity would 
not result in a violation 
of §§ 9(a); 12(a), or 21(a) ofthe Act, 415 ILCS 
5/9, 5/12(a), 
5/21 
(a), because the following information was not provided: 
1.     
A description of the intermediate storage and processing of the coal 
combustion by-product 
("CCB"); 
2.    
A discussion of the site-specific geology and the potential for constituents 
of the CCB to migrate to groundwater; 
3.    
Volumes and timeframes for the use ofCCB to demonstrate that it is not 
used in excessive amounts; and 
QB\8410989.3 
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Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
4.    
Justification that the CCB is used beneficially, including procedures to 
insure that the FGD gypsum will only be used on agricultural land in appropriate 
volumes where soil types, soil conditions and crops will benefit from application 
of the FGD gypsum. 
14.   
A careful review of the Request and the Presentation, however, demonstrates that 
We Energies indeed provided detailed information responsive to each of the items set 
forth in the denial letter as the basis for the Agency's denial 
of its Request. We Energies 
made numerous attempts to reach out to 
IEP A and respond to any questions that they 
may have had with regard to the information provided or the need for additional 
information. As stated above, 
IEP A did not contact We Energies in response to any of 
the company's overtures. Accordingly, IEPA's denial of the Request is erroneous, 
arbitrary, capricious and contrary to applicable law. 
We Energies addresses each ofthe 
alleged information deficiencies in tum. 
15.   
At the outset, it should be noted that 
We Energies did provide IEPA with 
information concerning its proposed distribution and agricultural use program for 
gypsum. Specifically, We Energies noted in its Request that if IEP A did not impose 
specific conditions in its beneficial use determination, the company intended to 
"institute 
a distribution and agricultural use program for Illinois that is consistent with that 
specified by WDNR's [Exemption]," which was included as part ofthe Request. The 
Exemption contains specific requirements for Material Testing (Exemption, p. 4, 
~~ 
3,4); 
Land Application (Exemption, p. 4, 
~~ 
5-10); Storage (Exemption, p. 5, 
~~ 
11-13); 
Hauling (Exemption, p. 5, 
~ 
14); and Reporting (Exemption, p. 5, 
~ 
15). The company's 
QB\841 0989.3 
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Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
proposed program was also detailed in the Presentation. 
See generally, 
Presentation, 
Slide 29. 
16.   
With regard to the Agency's first alleged deficiency, 
We Energies provided !EPA 
with information concerning its proposed procedures for the intermediate storage and 
processing 
of the gypsum both at the April 1, 2009 meeting and as part of the Request. 
This information included the storage and management 
of the gypsum after it leaves the 
plant and the procedures that would 
be in place to ensure that there will not be excessive 
loss 
of the material so that it does not generate pollution through dust, runoff or migration 
to groundwater. 
17.   
With regard to intermediate storage and processing 
ofthe gypsum, We Energies 
indicated at the April 
1,2009 meeting that its intention was that the gypsum would be 
hauled from P4 or OCPP to the farm location where it would be applied as a fertilizer? 
Per 
the Exemption included as part of the Request, material hauling would be completed 
in a manner consistent with the requirements contained in Wis. Admin. Code 
NR 
538.16(2), which requires transport of materials in durable, leak-proof containers and 
loading and hauling 
of materials in such a manner that its contents do not fall, spill or 
leak. 
See 
Exemption, p. 5, 
~14.     
As this material would originate in Wisconsin, the 
requirements 
of Wis. Admin. Code NR 538.16(2) would apply. Further, We Energies 
committed to conformance with the applicable requirements 
of 35 Ill. Admin. Code Part 
391 Subpart C, which define transportation and storage requirements for the widely land 
applied sludge, biosolids. 
See 
Presentation, Slide 29. The Wisconsin and Illinois 
requirements for transportation 
of this material are consistent. 
2 Based on discussions with representatives of the Illinois Department of Agriculture, We Energies intends 
to license the gypsum as a fertilizer in Illinois. 
QB\8410989.3 
7
18.   
With regard to storage of materials at the farm location, We Energies noted in its 
Request that it proposed to follow the storage requirements outlined in the Exemption. 
These procedures included outdoor storage 
of a limited duration in a manner that will 
prevent excessive dusting and the implementation 
of best management practices to 
prevent run-off 
of the stored material. 
See 
Exemption, p. 5, 
,-r,-r 
11-13. The proposed 
hauling and intermediate storage procedures are designed to protect against potential 
exposure to the air, water 
or land from these materials prior to their application. Further, 
We Energies committed to conformance with applicable requirements of35 Ill. Admin. 
Code 
Part 391 Subpart D, which define application requirements for the widely land 
applied sludge, biosolids. 
See 
Presentation, Slide 29. Collectively, these procedures 
satisfy the requirements 
of §§ 9(a), 12(a) and 21(a) of the Act. 415 ILCS 5/9(a); 5112(a), 
5121 
(a). 
19.   
Second, 
We Energies addressed the Act's requirements related to the protection of 
groundwater by providing IEP A with information comparing Illinois Class I groundwater 
standards and leachate (ASTM D-3987-85) generated from 
We Energies' gypsum and 
various similar agricultural products. 
We Energies also provided a comparison of 
potential heavy metal loadings from We Energies' gypsum application with the 
Maximum Application Rates for biosolids found at 35 Ill. Admin. Code 
§ 319.420. 
See 
Request, pp. 4-5. 
20.   
It 
is We Energies' beliefthat IEPA's statement concerning site-specific geology 
and potential for migration stems from a concern that the gypsum will contaminate 
groundwater. Since 
We Energies is not currently marketing gypsum in Illinois, it cannot 
provide site-specific information for the fields where the gypsum will be applied. The 
QB\841 0989.3 
8
data provided by We Energies, however, demonstrates that the quality of leachate from 
gypsum is similar to other agricultural products used throughout Illinois and that with 
regard to heavy metals, the data demonstrates that land application 
of We Energies' 
gypsum, at typical agronomic rates 
of up to 2 tons/acre, is well under Part 391 loading 
rates. 
See 
Request, pp 3-5; 
see also 
35 Ill. Admin. Code Part 391.420. Additionally, as 
part 
of We Energies' proposed distribution and use plan, the company would perform an 
annual material characterization 
of the gypsum. 
See 
Exemption, p. 4, 
~ 
3. Accordingly, 
application 
of gypsum consistent with typical agronomic rates would pose significantly 
lower risk to human health and the environment than other materials already approved for 
use throughout Illinois. 
21.   
Third, We Energies provided the Agency with information concerning the 
volumes 
of material and the timeframes for use of the gypsum in Wisconsin. 
See 
Request 
at p. 
2. At the meeting, We Energies noted that it anticipated similar market acceptance 
in Illinois as it has observed in Wisconsin and that distribution would 
be most likely 
limited to northeastern Illinois given the proximity 
of the area to We Energies' plants and 
the lack 
of gypsum production north of the Interstate 80 corridor. 
See generally 
Presentation, Slide 15. As stated above, We Energies has not actively marketed its 
gypsum in Illinois. Therefore, it is not possible to project the exact volumes 
of materials 
that will 
be used. We Energies did note that agronomic rates are typically up to 2 tons 
per acre. 
See 
Request, p. 3. 
22.   
Additionally, We Energies' proposed distribution and agricultural use program for 
gypsum, as set forth in the Exemption, addresses the application 
of gypsum in an 
environmentally sound manner. 
Under We Energies' proposed agricultural use program, 
QB\8410989.3 
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Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
as embodied in the Exemption, application of gypsum would also be undertaken 
consistent with accepted agricultural practices. 
See 
Exemption, p. 5, 
~ 
10. Gypsum 
would not 
be repeatedly applied so that excessive amounts of hazardous substances 
would accumulate in the soil or cause a detrimental effect 
on surface water or 
groundwater quality, and best management practices for surface water protection would 
be used. 
See 
Exemption, p. 5, 
~~ 
8-9. Farmers would be provided with information 
concerning these agronomic and environmental practices to ensure appropriate 
application 
of the gypsum. 
See 
Exemption, p. 4, 
~ 
5. Further, We Energies stated that it 
was its intention to distribute gypsum in conformance with the public distribution 
program requirements, contained in 35 Ill. Admin. Code § 391.204, through a contracted 
distribution partner that would provide agronomic expertise to assure application at rates 
appropriate for the specific field and crop under consideration. 
See 
Presentation, Slide 
29. 
23.   
Finally, 
We Energies provided sufficient justification that gypsum would be used 
beneficially. While as noted 
by the Agency in the denial letter, gypsum is not needed for 
all soil types, soil conditions 
or crops, there are crops and soils that benefit from the use 
of gypsum. We Energies included in its Request several documents addressing the 
benefits 
of gypsum. 
See 
Request, Attachments: U.S. EPA FGD Gypsum Factsheet, 
USDA Factsheet, and OSU Gypsum Factsheet. Farmers knowledgeable about their soil 
and their crops will seek 
out gypsum where it is needed and will not expend the cost or 
effort to apply this material where it would not help or would harm their crops. The 
growing use 
of gypsum across the Illinois border in southeastern Wisconsin and Indiana 
suggests that farmland in northeast Illinois 
may also benefit from gypsum. 
QB\841 0989.3 
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* * * * * PCB 2010-011 * * * * *
24.   
While We Energies believes that farmers will elect to use gypsum only for those 
soils and crops where its use is beneficial and cost effective, the company notes that, as 
part 
of its proposed distribution and use plan, it would distribute gypsum through a 
contracted distribution partner that would provide agronomic expertise to assure 
application at rates appropriate for the specific field and crop under consideration. 
We 
Energies is providing information concerning soil and crop application rates to WDNR, 
the University 
of Wisconsin Extension offices and the United States Department of 
Agriculture offices in the counties where the gypsum is being used. 
See 
Exemption, p. 4, 
~ 
7. To the extent soils in Illinois differ, We Energies' distribution partner would make 
additional determinations, and 
We Energies would provide that information annually to 
IEP A and the Illinois Department 
of Agriculture if that information would be helpful to 
the Agencies. 
See generally, 
Presentation, Slide 29. As stated above, information 
concerning appropriate application rates for gypsum for the various soil types where it 
may be used will be provided to the farmers purchasing or receiving gypsum. 
See 
Exemption, p. 4, 
~ 
5. These steps will ensure that where farmers believe the use of 
gypsum is beneficial, it will be appropriately applied with environmental considerations 
in mind. 
WHEREFORE, for the foregoing reasons, We Energies requests that the Board 
vacate the 
Agency's denial of We Energies' Request for a Beneficial Use Determination 
to allow the use 
of gypsum from its FGDs as a fertilizer in agricultural applications in 
Illinois. 
We Energies further requests that the Board find that We Energies' FGD 
gypsum is a coal combustion by-product, as defined in § 3.135 
of the Act, 415 ILCS 
5/3.135, and that the Company can market and utilize its FGD gypsum in Illinois in a 
QB\8410989.3 
11
manner consistent with its proposed distribution and agricultural use program embodied 
in 
WDNR's Conditional Grant of Exemption, attached to its Request and this Petition. 
Dated: July 30, 2009 
Cynthia 
A. 
Faur 
Quarles 
& 
Brady LLP 
300 
North LaSalle Street 
Suite 
4000 
Chicago, Illinois 60654-3422 
(312) 
715-5000 
QB\841 0989.3 
Respectfully submitted, 
Wisconsin Electric 
Power Company, 
o--:=>-
12 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
EXHIBIT A
March 31, 2009 
Mr. 
Alan Keller, P.E. 
Manager, Permit Section 
Division of Water Pollution Control 
Illinois Environmental Protection Agency 
1021 North Orand Avenue East 
Springfield, IL 62794-9276 
we 
energies~ 
231 W. Michigan Street 
Milwaukee, WI 53203 
www.we.energies.com 
SUBJECT: Request for Beneficial Use Determination: Synthetic Gypsum from Flue 
Gas Desulfurization Process 
Dear Mr. Keller: 
As provided in 415 
ILCS 5 Section 3.1 35(b), Wisconsin Electric Power Company (doing 
business as We Energies), a wholly owned subsidiary 
of Wisconsin Energy Corp. 
requests the Illinois Environmental 
Protection Agency (IEPA) review this application and 
provide a written Beneficial Use Determination (BUD) that synthetic gypsum produced 
as a by-product 
offlue gas desulfurization (FOD) is a Coal Combustion By-product 
(CCB) when used for agricultural purposes in the 
State of Illinois. 
As part 
of We Energies commitment to upgrade the environmental performance of 
existing coal-fired generating facilities, state-of-the-art air quality control system were 
added to the 
Pleasant Prairie Power Plant (P4) located in Pleasant Prairie, WI. The 
upgrade included a Selective Catalytic Reduction 
(SCR) system to reduce NOx emissions 
and a wet FOD system to reduce S02 emissions. Additionally, SCR and wet FOD 
systems are presently being installed on two existing generating units at our Oak Creek 
Power Plant (OCPP) to further reduce NOx and S02 emissions. Lastly, two new coal-
fired generating units are under construction at 
OCPP and include SCR and wet FOD 
systems. 
The FOD systems at both P4 and OCPP are all very similar wet limestone forced 
oxidation systems. In this process, as the flue gas passes through the wet scrubber, it is 
mixed with a limestone 
(CaC0
3) 
slurry. The limestone slurry reacts with the flue gas, 
absorbing sulfur 
dioxide 
from the flue gas and forming calcium sulfite (CaS03). Air 
(oxygen) is then blown into the absorber tank to further oxidize the calcium sulfite into 
calcium sulfate 
(CaS04-2H20) also known as synthetic gypsum. The synthetic gypsum 
slurry is dewatered through a hydrocIone and a vacuum filter system before it is 
conveyed to an enclosed storage building prior to shipment to beneficial use markets. A 
second by-product filter cake, again mostly gypsum, 
is produced by the FOD wastewater 
treatment process. This filter cake, managed separately from the synthetic gypsum, is 
currently landfilled and 
is not a part of this request. 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
We Energies Synthetic Gypsum Beneficial Use Determination Request 
March 31, 
2009                                                                                
Page 
2 of5 
We Energies, in part, selected forced oxidation FGD systems for both P4 and OCPP over 
other technologies because the production 
of high purity (>95%) synthetic gypsum has 
well established beneficial use markets. Production of high purity synthetic gypsum 
supports We Energies commitment to minimizing the landfilling 
of beneficially usable 
coal combustion products. 
In 
2007, We Energies received numerous inquiries from local farmers regarding the 
availability 
of FGD gypsum for agriculture purposes. As a result of these inquiries, We 
Energies seized the opportunity to diversify the beneficial use of gypsum beyond wall 
board production. In March 
2008, We Energies received a Conditional Grant of 
Exemption (Exemption) from the Wisconsin Department of Natural Resources (WDNR). 
The Exemption allows synthetic gypsum produced at 
P4 to be used as a substitute for 
natural gypsum in appropriate agricultural applications.  In May 
2008, the Wisconsin 
Department 
of Agriculture, Trade and Consumer Protection (DATCP) issued We 
Energies a permit to distribute synthetic gypsum as a 
"soil and plant additive" in 
Wisconsin. 
In 
2008, the P4 FGD system produced approximately 78,000 tons of synthetic gypsum. 
By the end of2008, approximately 7,000 tons of synthetic gypsum were distributed and 
used in various agricultural applications in Wisconsin. 
Other than a small inventory of 
synthetic gypsum remaining at the 2008, the majority of the material produced was 
utilized in wall board production. In the first couple 
of months of 2009, more that 4000 
tons of gypsum have been delivered to Wisconsin farmers. Wall board production will 
continue to be We Energies primary market for beneficial use 
of the high purity gypsum, 
however, wall board demand for the basic gypsum feedstock varies seasonally as well as 
from year to year, depending on market demand for wall board. 
For years, mined or natural gypsum has been used in agricultural applications as a 
fertilizer and soil amendment. Agricultural benefits 
of gypsum include: 
./ Source of plant nutrients sulfur (S) and calcium (Ca) 
./ Increased productivity of high sodic (sodium; Na) soils 
./ Improvement in soil aggregation which in tum increases water infiltration 
./ Reduction of soil crusting and soil runoff 
./ Reduction of runoff of phosphorus by reducing the availability of phosphorus in 
the soil 
Because 
ofthe success and acceptance of P4 synthetic gypsum by Wisconsin farmers we 
have received inquiry from farmers in Illinois regarding the availability 
of synthetic 
gypsum. Given the proximity 
ofP4 to the Illinois-Wisconsin state line, We Energies 
wishes to make synthetic gypsum available to Illinois farmers. 
Attached you will find information that supports the approval 
of synthetic gypsum as a 
CCB. We Energies has generated this information to support the initial request for the 
WDNR Exemption as well as the annual reporting requirements 
of the Exemption.
We Energies Synthetic Gypsum Beneficial Use Determination Request 
March 31, 
2009                                                                                
Page 
3 of5 
~  
Table 1 provides a comparison of leachate (ASTM D-3987-85) generated from 
various agricultural products, We Energies P4 synthetic gypsum to Illinois Class I 
Potable Groundwater Standards. These data illustrate that the quality of leachate 
from synthetic gypsum is similar to other agricultural products. The data also 
show that the Class I sulfate standard 
is exceeded for all comparable agricultural 
products, which 
is understandable as these products are purposefully applied to 
provide a readily soluble form of the plant nutrient Sulfur. 
~  
Table 2 provides a comparison of potential heavy metals loadings from synthetic 
gypsum with Title 35 
Part 391 Maximum Application Rates for sludges. Part 391 
rates were selected for comparison given the well established regulatory 
framework for land application 
of biosolids and lack of specific criteria within 
Title 35 Subtitle G regulations. The data demonstrate that land application 
of 
synthetic gypsum, at typical agronomic rates of2 tons/acre, is well under Part 391 
loading rate limits. 
Also attached are 
US EPA, USDA and university research factsheets regarding the 
benefits 
of gypsum, mined and synthetic. 
Collectively, the attached information clearly demonstrates that FGD gypsum satisfies 
the criteria 
of 415 ILCS 5 Section 3.13 5 (b) that the beneficial use: 
./ Will not cause, threaten, or allow the discharge of any contaminant into the 
environment; 
./ Will otherwise protect human health and safety and the environment; and 
./ Constitutes a legitimate use of the coal combustion (byproduct) waste as an 
ingredient or raw material that 
is an effective substitute for an analogous 
ingredient or raw material 
Following your written determination that synthetic gypsum is a CCB it is We Energies 
intent to register synthetic gypsum produced at 
P4 with the Illinois Department of 
AgricyIt1Jr~  
CIPOA). ltisals_oQur intent, ifthere are no conditions included in your 
BUD, to institute a distribution and agricultural use program for Illinois that 
is consistent 
with that specified by WDNR's Conditional Grant 
of Exemption (also attached). 
On behalf of We Energies, I look forward to working with the Agency staff to expedite 
this request and address any issues that may arise. 
Please do not hesitate to call me (414-
221-3948) regarding this request, 
I'd be happy to answer any questions that you may 
have. 
Sincerely, 
Robert 
~?~ 
Paulson 
Senior 
Environmental Consultant 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
We Energies Synthetic Gypsum Beneficial Use Determination Request 
March 31, 
2009 
Attachments: 
Table I. Synthetic gypsum leachate analytical data 
Table 2. Synthetic gypsum bulk analytical data 
USEP A FGD Gypsum factsheet 
USDA Factsheet 
OSU Gypsum factsheet 
WDNR Exemption 
WDA TCP License 
Page 4 of5 
Table 1. Comparison of ASTM Water Leach Test Results for Various 
Agricultural Products and We Energies P4 Synthetic Gypsum with Illinois Class I 
Potable Groundwater Standards. 
IL Class I    
Pelletized  
Ammonium  Aluminum  
P4Gypsum 
Potable     
Gypsum    
Sulfate     
Sulfate      
Dec-08 
Groundwater 
Parameter                  
Units   
Standards    
AC81151    
AC81152    
AC81153    
AD04436 
Dissolved Aluminum           
mgll                 
0.75        
0.016       
3500        
0.36 
Dissolved Antimony           
mgtl      
0.006      
0.00058   
< 
0.00024     
0.028      
< 
0.00025 
Dissolved Arsenic             
mgtl      
0.05     
< 
0.0026    
< 
0.0026    
< 
0.026      
< 
0.001 
Dissolved Barium             
mgll      
2.0        
0.083     
< 
0.0055    
< 
0.055        
0.027 
Dissolved Beryllium            
mgtl      
0.004    
< 
0.00085   
< 
0.00085     
0.02       
< 
0.00023 
Dissolved Boron              
mgtl      
2.0        
0.083       
0.0087      
0.2          
0.01 
Dissolved Cadm ium           
mgtl      
0.005      
0.00034     
0.00026   
< 
0.0025       
0.00014 
Chloride                     
mgtl      
200        
8.9       
< 
0.6         
66         
.0.65 
Dissolved Chromium           
mgtl      
0.1        
0.012       
0.012     
< 
0.032        
0.000097 
Dissolved Cobalt              
mgtl       
1.0       
not analyzed not analyzed 
not analyzed   
0.00068 
Dissolved Copper             
mgtl      
0.65       
0.0054      
0.0019      
0.019      
< 
0.00029 
Dissolved Cyanide            
mgtl      
0.2        
0.032     
< 
0.006     
< 
0.006        
0.0091. 
Dissolved Fluoride            
mgtl      
4.0      
< 
0.06        
1.3         
3.4          
8.0 
Dissolved Iron                
mgtl      
5.0        
1.7         
0.29      
< 
2.5          
0.031 
Dissolved Lead               
mgtl      
0.0075     
0.021       
0.00028     
0.0021     
< 
0.000038 
Dissolved Manganese         
mgtl      
0.15       
0.5         
0.03        
0.062        
0.065 
Mercury                     
mgtl      
0.002    
< 
0.000012  
< 
0.000012  
< 
0.000012     
0.00012 
Dissolved Molybdenum         
mgtl                 
0.0061      
0.0079      
0.016        
0.00045 
Dissolved Nickel              
mgtl      
0.1        
0.014       
0.017       
0.038        
0.0018 
Nitrate-Nitrite as N            
mgll     
10          
0.68        
4.3         
3.4          
0.05 
Dissolved Selenium           
mgtl      
0.05     
< 
0.0046      
0.0049    
< 
0.046        
0.042 
Dissolved Silver              
mgtl      
0.05     
< 
0.00065   
< 
0.00065   
< 
0.0065     
< 
0.000068 
Sulfate                      
mgtl      
400        
1750       
35300      
24900       
1400 
Dissolved Thallium            
mgtl      
0.002      
0.00012     
0.000092    
0.0019     
< 
0.000028 
Dissolved Zinc               
mgll      
5.0        
0.022       
0.02        
0.6          
0.0024 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
We Energies Synthetic Gypsum Beneficial Use Determination Request 
March 31, 
2009                                                                                
Page 
5 of5 
Table 2. Comparison of Synthetic Gypsum Heavy Metals Application Rates with 
Title 35 Part 391 Maximum Application Rates. 
Part 391.420 Maximum 
Lifetime 
Synthetic Gypsum 
Application Loading Rates 
applications    
Maximum 
Concentration 
Heavy Metals 
(tons/acre) to     
annual 
(as 
applied basis)      
Lifetime     
Annual    
reach lifetime  
application rate 
Parameter         
mg/kg      
Iblton       
Ib/acre      
Ib/acre     
loading rate    
(tons/acre) 
Antimony          
0.13        
0.00026         
700                  
2692308 
Arsenic          
< 0.43        
0.00086         
100                   
116279 
Cadmium          
0.042       
0.000084          
10          
2        
119048        
23810 
Chromium       
< 0.06        
0.00012         
440         
44      
3666667       
366667 
Copper            
1.2          
0.0024        
250                   
104167 
Lead              
1.5           
0.003        
1000                   
333333 
Manganese      
< 0.026       
0.000052         
900                 
17307692 
Mercury           
0.97        
0.00194           
7                     
3608 
Nickel             
2.6           
0.0052         
100                    
19231 
Selenium          
12            
0.024           
8                      
333 
Silver           
< 0.63        
0.00126         
178                   
141270 
Zinc              
5.5            
0.011         
500                    
45455
&EPA 
United States 
Environmental Protection 
Agency 
March 
2008 
EPA530-F-08-009 
www.epa.gov/osw 
Agricultural Uses for Flue Gas 
Desulfurization (FGD) Gypsum 
What Is Gypsum? 
Gypsum is calcium sulfate dihydrate, or CaSO/2H
2
0, which can come from a 
number 
of sources. Mined gypsum is a common mineral found around the world 
in sedimentary rock formations, from which it is mined or quarried. FGD gypsum 
is a synthetic material of identical chemical structure produced as a byproduct from 
coal-fired electric utilities. 
Other sources of gypsum include phosphogypsum, 
citro gypsum and fiuorogypsum, which are byproducts 
of different chemical 
manufacturing processes 
1
• 
Gypsum has many beneficial uses, including agricultural applications, wallboard 
products for residential and commercial buildings, as an ingredient in portland cement 
manufacturing, and as a filler ingredient in some foods and toothpaste. Because 
of its 
relatively high degree 
of purity, FGD gypsum can be used as a substitute for mined 
gypsum in many uses, while also realizing important environmental benefits that 
result from recycling this byproduct material. 
Gypsum in Agriculture 
Both mined and FGD gypsum can be used as a soil amendment in a range of soil 
and hydrogeologic conditions. Gypsum can be used 
as a nutrient source for crops; as 
a conditioner to improve soil physical properties, and water infiltration and storage; to 
remediate sodic (high sodium) soils; and to reduce nutrient and sediment movement 
to surface waters, among other uses. The 
United States Environmental Protection 
Agency 
(USEPA) and the United States Department of Agriculture (USDA) support 
the use 
of FGD gypsum in appropriate soil and hydrogeologic conditions as an 
effective method 
of soil conservation and industrial material recycling. However, 
before applying any fertilizer or other soil amendment, including FGD gypsum, it 
is important to first assess the amendment material and soil conditions to determine 
compatibility and appropriate application rates. 
1     
This brochure does not address these sources 
of gypsum.
FGD Gypsum 
FGD gypsum is created by forced oxidation scrubbers attached to coal-fired 
power plants 
to limit emissions of the sulfur which is released when coal is burned. 
The scrubbers spray liquid lime 
or limestone slurry into the flue gas path, where it 
reacts with sulfur in the gas to form calcium sulfite, an intermediate product with 
little practical value. However, when the chemical reaction is pushed further by 
the introduction 
of air into the FGD absorber tank, the calcium sulfite reacts to 
become gypsum. The material is then dewatered and processed; the end product is a 
consistent, finely divided powder. This process is known as flue gas desulfurization 
(FGD), and the gypsum produced is known as FGD gypsum. 
The term FGD gypsum is the name most often used 
by generators of the material. 
Other names include recaptured gypsum, byproduct gypsum, and synthetic gypsum. 
All of these terms refer to the same material produced by the forced oxidation 
process. The gypsum in both FGD gypsum and mined gypsum has the same basic 
chemical makeup- CaSO/2H
2
0; 
however, the amount and types of trace materials 
and unreacted sorbents found in the gypsum can vary among power plants and among 
mines
2
• 
If you are considering using FGD gypsum products as a soil amendment, it is 
appropriate that the chemical analysis of the material be provided by all commercial 
sources to support decision-making in their use, as 
States may have regulations and 
standards that need to be followed. 
To this end, it is advisable to contact your State's 
department of agriculture or State extension service before FGD gypsum is used as a 
soil amendment. 
The Future of FGD Gypsum 
According to the American Coal Ash Association's annual Coal Combustion 
Product Production and Use Survey, total production ofFGD gypsum in 2006 
was approximately 12 million tons. Close to 9 million tons ofFGD gypsum was 
put to beneficial use, while the remainder was landfilled. Of the amount used, 
approximately 80 percent was used in wallboard products, and about 2 percent 
(168,190 tons) was used in agriculture, with most of the rest being used in concrete 
and cement applications. In the future, FGD gypsum may find more use as filler 
in plastics and fiberglass, as well as in reducing mine subsidence, re-contouring 
landforms, and improving soil conditions at mining sites. 
2     
Information about constituent concentrations in mined and FGD gypsum may 
be found at http://www.epa.gov/epaoswer/osw/conserve/c2p2/ccps/fgd.htm.
Over the next ten years, annual production of FGD gypsum may double as more 
coal-fired power plants come online, and as scrubbers are added to existing power 
plants to comply with the EPA's Clean Air Interstate Rule and other requirements. It 
is anticipated that the majority 
of the new scrubbers will produce FGD gypsum, 
although in some parts of the country power plants may select dry scrubbers, 
resulting in materials 
other than FGD gypsum. 
Agricultural Applications of Gypsum 
This increased supply is 
an opportunity to explore  There 
are three general uses of gypsum in agricultural 
the expanded use ofFGD  applications: 
gypsum as a soil 
amendment. 
Ongoing 
and future research and 
demonstration projects 
will 
be able to assist 
people in making 
decisions about the use 
of 
FGD gypsum. 
A source 
of nutrients for plants 
Improvement of soil physical 
and chemical 
properties 
Reduction in 
the transport of nutrients, sediment, 
pesticides 
and other contaminants to surface waters 
Current Uses of Gypsum in Agriculture 
Nutrient Source 
Gypsum is rich in calcium and sulfur, two nutrients essential to all crops. The 
most common application 
of gypsum is to crops that have high calcium requirements, 
or to areas that have calcium-poor soils. Peanuts have particularly high calcium 
requirements, and gypsum often is added to peanut fields to increase yield and quality 
of the crop. Many fruits, vegetables, and cereals also can benefit from increased 
calcium availability; in particular, fruits such as tomatoes and cantaloupes need 
calcium for skin strength, and growers may add calcium to produce fewer blemishes 
and a longer 
shelf life. 
Sulfur fertilization also is required for many crops, and gypsum can be an 
effective sulfur source. There is a growing need for sulfur addition to soils, since 
atmospheric deposition 
of sulfur has decreased, and most nitrogen and phosphorus 
fertilizers no longer contain significant amounts 
of sulfur. Sulfur is sometimes a 
constituent 
of nitrogen and phosphorus fertilizers, but gypsum also can be an effective 
sulfur source for some crops. 
In 
addition to calcium and sulfur, gypsum, depending 
on its source, may provide essential micronutrients to plants. 
Soil Improvement 
Gypsum is helpful in treating sodic soils and soils suffering from crusting and 
other structural problems. Gypsum is more readily soluble in water than other 
calcium-rich soil amendments such as limestone, and therefore moves throughout 
the soil column more easily. Calcium ions from gypsum displace excess sodium
and other ions, which then become mobile and diffuse. The calcium ions reduce 
dispersion 
of soil particles by promoting the aggregation of clay particles. This 
improves soil structure and stability and prevents soil crusting. Reduced crusting 
and better particle aggregation allow for greater water infiltration and storage in soil, 
thereby reducing runoff and erosion. These soil structural improvements also ease 
the emergence 
of seedlings and allow roots to penetrate further into the soil to take 
advantage 
of the additional stored moisture. 
Mitigation of Contaminant Transport to Surface Water 
In addition to water quality benefits associated with reduced runoff and erosion, 
FGD gypsum application can reduce the solubility of nutrients such as phosphorus in 
livestock and poultry manure and soils treated with manure. Gypsum converts readily 
soluble phosphorus to less-soluble forms, which can reduce the runoff 
of phosphorus 
into adjacent streams, lakes, or ground water. Excess phosphorus in runoffleads to 
water quality problems, including algal blooms and eutrophication 
of water bodies. 
Gypsum Decisions in Agriculture 
Recycling coal combustion products (CCPs) and other industrial materials 
can result in significant environmental benefits, including reduced greenhouse gas 
emissions, less use 
of virgin materials, and decreased use oflandfills. The USEPA's 
Coal Combustion Products Partnership (C2P2) (http://www.epa.gov/epaoswer/osw/ 
conserve/c2p2/) aims to increase recycling 
ofCCPs, including FGD gypsum. In 
addition to its environmental benefits, FGD gypsum may be less expensive for users 
than mined gypsum, although transportation costs can 
be a factor in evaluating the 
practicality 
of using FGD gypsum as a gypsum source. 
As with any fertilizer or chemical additive, there are a range 
of considerations 
that should be kept in mind when deciding whether to apply gypsum. Gypsum is 
not suitable for all soil types, soil conditions. or crops. Appropriate application rates 
should be determined to accomplish specific soil improvement goals, while not 
exceeding state limits on the use 
of individual constituents. In general, application 
rates 
of up to two tons per acre should be sufficient to accomplish most agronomic 
and horticultural objectives
3
• 
In situations where there is excess sulfur in the soil, the amount of gypsum to be 
added should be balanced against copper nutrition in animals, as high levels 
of sulfur 
in feed can interfere with copper absorption. Boron concentrations in FGD gypsum 
typically are higher than in natural gypsum sources; therefore, crops sensitive 
to 
boron uptake such as cherry, peach and kidney bean may require lower application 
rates. The high calcium and sulfur content 
of gypsum can cause an imbalance in 
other soil nutrients, such as magnesium; therefore, soil nutrient characteristics, 
and potential plant and animal uptake, 
of these and other constituents should be 
understood and considered before deciding whether to use any gypsum product. 
3     
Donstova et al. and other sources
In determining the environmental suitability of FGD gypsum for a particular location, 
you may find the 
USEPA's Industrial Waste Management Evaluation Model 
(lWEM) and the chapter on land application (Chapter 7) in the associated 
Guide 
for Industrial Waste Management 
(http://www.epa.gov/epaoswer/non-hwlindustd/ 
guide/index.htm) to 
be useful resources. You should also consult with your State's 
department 
of environmental protection to comply with any regulations pertaining 
to the management 
ofCCPs. You may also find it helpful to consult with your 
State's department 
of agriculture and agricultural extension service, and with the 
USDA Natural Resources Conservation Service. 
J.ft:iU t:iypsum BeneficIal 
Use 
LonsideratIons 
UeClSlon             
Things to ConsIder            
Resources 
l. 
Is gypsum a good 
. 
"1 )'pes ot crops 
. 
State department 
choice for 
my needs? 
. 
Nutrient requirements      
of agriculture/ago 
of crops                  
extension agency 
. 
Soil structure 
. 
USDA Natural 
. 
Soil chemical profile       
Resources Conservation 
Service 
1..  It gypsum IS a good 
. 
Trace element          
• State department 
choice, should 
I 
use       
sensitivity 
of crops        
of agriculture/ago 
FGD gypsum? 
. 
Purity of available FGD    
extension agency 
gypsum               
• 
Fertilizer supplier 
. 
Cost differential 
:.:s.   
Is the use ot           
•  Ground water          
•  State departments 
FGD gypsum 
. 
Direct exposure           
of environmental 
environmentally 
. 
Ecosystem impacts        
protection 
protective? 
. 
Surface waters 
. 
EPA's 
Guide for 
Industrial 
Waste 
Management 
References and Websites 
The references and Websites below provide additional information and studies 
about the uses of gypsum in agriculture. 
Clark, R.B., K.D. Ritchey, and 
V.C. Baligar (1999) "Benefits and Constraints for 
use ofFGD Products on Agricultural Land." 
Fuel, 
80:821-828. 
Donstsova, K., 
YB. Lee, B.K. Slater, J. M. Bigham (no date) 
Gypsum/or 
Agricultural Use in Ohio 
- 
Sources and Quality of Available Products. 
Ohio State 
University Extension Fact Sheet. School of Natural Resources, The Ohio State 
University, Columbus, 
OH. Available online at: http://ohioline.osu.edu/anr-fact/0020. 
html. 
EPA (2003) 
Guide/or Industrial Waste Management. 
U.S. Environmental 
Protection Agency. EPA530-R-03-001. February. 
Korcak, 
R.F. 
Utilization o/Coal Combustion By-Products in Agriculture and 
Horticulture. 
U.S. Department of Agriculture, Agricultural Research Service. 
Beltsville, Maryland. 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
OSU (2006) 
Gypsum for Agricultural Use in Ohio--Sources and Quality of 
Available Products. 
Ohio State University Extension Fact Sheet, ANR-20-05. 
Available online at: http://ohioline.osu.edu/anr-fact/0020.html. Accessed August, 
2007. 
Smith, 
1. (2006) 
Management of FGD Residues. 
IEA Clean Coal Centre. 
London, United Kingdom. August. 
Stout, W.L., J.L. Hem, R.E Korcak, and C.W. Carlson (1988) 
Manualfor 
Applying Fluidized Bed Combustion Residue to Agricultural Lands. 
RS-74. U.S. 
Department of Agriculture, Agricultural Research Service, Washington, DC. 
USGS (2005) 
Major- and Trace-Element Concentrations in Soils from Two 
Continental-Scale Transects of the United States and Canada. 
Open-File Report 
2005-1253, U.S. Geological Survey. Available online at: http://pubs.usgs.gov/ 
of/200511253/. 
Accessed September 13,2007. 
For More Information 
--USDA Natural Resources Conservation Service: 
http://www.nrcs.usda.gov/partners/for_farmers.html 
--USEPA 
C2P2 Website: 
http://www.epa.gov 
1 epaoswerl oswl 
conservel c2p2 
--USEPA Industrial Waste Management Website: 
http://www.epa.gov/epaoswer/non-hwlindustd/guidelindex.htm 
--FGD Products Website: 
http://www.fgdproducts.org/ 
--Information sheets on agricultural gypsum use from a leading distributor: 
http://www.gypsumsales.comlgyp_whitepapers.html 
--A paper on agricultural gypsum use from a distributor: 
http://www.dktgypsum.comlnews_content7.html 
--Information sheet on FGD gypsum from the American Coal Ash 
Association: 
http://www.acaa-usa.org/PDF/EnvFocusFina13g2.pdf 
Acknoweldgements 
EPA gratefully acknowledges the following organizations for their contributions 
to its preparation: 
-- United 
States Department of Agriculture 
-- Agricultural Research 
Service 
-- United States Department of Energy--National Energy Technology Laboratory 
-- 
USEPA Office of Air and Radiation 
-- 
USEPA Office of Research and Development 
-- American Coal Ash Association 
-- Electric Power Research Institute
United States Department of 
Agriculture 
Agricultural Research 
Service 
Micrograph of soil surface 
sealed after a two inch 
rainfall 
event. The seal limits water 
infiltration and air exchange 
between the 
soil and the 
atmosphere. 
Gypsumfactoids . 
• Gypsum is anat:ural 
I>ubstance 
.. 
Primary .compQ.nei:lt 
,.  
. 
or. 
. 
drywall 
.Byproductofpollu~i().n 
.reductiori iri coal fueled 
power plants 
eNorma} applibttion 
r;it~s 
,ofl-2tonlaj:retosoil  . 
su'riai::e 
Random corn plants with the 
same fertility, planting date and 
genetics 
from the same field 
without gypsum on the left and 
with gypsum on the right. 
National Soil Erosion Research Laboratory 
2755., Russell St., West Lafayette, IN 47907-2077 
FACT SHEET: GYPSUM 
Gypsum is a naturally occurring mineral that 
most 
people know as the main component in 
sheet rock or gypsum board. It is normally 
mined for this purpose but increasingly large 
quantities are produced from 
the scrubbing of 
flue gases from 
coal fired combustors to 
achieve clean air standards (Synthetic gypsum). 
Gypsum 
is calcium sulfate dihydrate (CaS0
4 
x 
2H
2
0) with a widely varying range of impurities 
depending on the geologic formation and it 
also varies widely in particle size due to the 
grinding procedure. 
Gypsum ready for 
field application 
Synthetic gypsum 
is normally much purer and 
has nearly constant silt sized particles due 
to 
the  nature  of  the  production  process. 
Synthetic gypsum 
is lower in heavy metals than 
soil that it is applied to and contains 19% 
Calcium (Ca) and 15% Sulfur (S) which are 
both  essential  
plant nutrients that most 
farmers have not traditionally been concerned 
with. Most 
of our soils are naturally high in Ca 
except when am mended with Dolomitic 
lime 
or subjected to acid weathering from addition 
of acidifying fertilizers. Because 
of this, the 
amount of Ca decreases from the natural 
levels and is replaced by acid, Magnesium (Mg) 
or Aluminum (AI). Ca for many plants is 
required in  large amounts because of its 
involvement 
in such basic cellular processes as 
cell wall health and strength and must be 
added 
to many crops when the ability of the 
soil to supply Ca is less than the plant 
requirement. Unlike agricultural 
lime which 
needs acid 
to react with soil, gypsum will react 
with rainwater and dissolve 
at a rate of 475 Ibs 
per acre after I inch of rainfall. The Ca ions 
move into 
the soil where they displace AI ions 
(if present) which are a major source of soil 
acidity. Gypsum, per se, is not a liming material 
since 
in most states liming materials are 
defined based on acid neutralizing capacity, 
however, it 
may increase pH when the soil 
acidity 
is due to exchangeable AI. Since gypsum 
is a neutral salt the equilibrium pH is 6.7 which 
is within the optimum range of pH for soil to 
provide  nutrients  
to  
plants.  Another 
significant  
difference  
between 
agricultural liming materials and gypsum 
is that gypsum can dissolve and move 
the Ca to lower soil layers where it can 
alleviate toxic AI effects at depth in the 
soil profile. Thus allowing greater depth of 
rooting which can make significant differences 
in yields especially when production is limited 
by available water. 
WEB SITE 
http://topsoil.nserl.purdue.edu/fpadmin/
'Ot.Darrell Norton 
·t?:#p~-AR$       
. ..    . ..... ' >\': 
Y> 
'.Nlit;onal 
Sbil Erosion 
ReSe~ri:h 
tab 
275:5.' Russell Street 
West Lafayette. 
IN 
47907-2077. 
Phone: 
765-494-8673 
~ 
765"494-5948 
"Both President Thomas 
Jefferson and Benjamin 
Franklin were early American 
agriculturalists who saw the 
value 
of 
using gypsum. 
Actually, Franklin applied 
gypsum 
to a 
hillside near 
Hershey, PA 
to 
read 
prominantly in green 'This Hill 
has Been Plastered' 
an 
early 
name for gypsum, hence, the 
name 
"land plaster". 
National Soil Erosion Research Laboratory 
275 S., Russell St., West Lafayette, 
IN 
47907-2077 
• Gypsum is a soluble source of S for plants. 
• Sulfur is important for protein formation in plants. 
• Studies (see above) from Dr. Warren Dick of the 
Ohio State University. Wooster. Ohio show S in 
rainfall has been greatly reduced since the late 1970's 
• These same studies show a yield increase in corn 
from S fertilization. 
• This leads 
to 
reduced erosion and improved water 
use efficiency that is well documented in the scientific 
literature and leads to increased available water and 
crop yield as shown in yield map below. 
• "The greatest benefit of gypsum addition is on better 
water/air infiltration and drainage and stabilizing soil 
structure which results in decreased crusting. ". L. D. 
Norton 
Effect of Gypsum on infiltration/drainage on a Paulding clay.               
Soybean yield with 1 tla surface applied gypsum in 
2005 on Blount complex field. Treated area inside 
black dashed line. 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Extension 
ANR-20-05 
School of Natural Resources, 2021 Coffey Road, Columbus, Ohio 43210 
Gypsum for Agricultural Use in 
Ohio  Sources and Quality of 
Available 
Katerina Dontsova 
Products 
Post-doctoral Researcher 
Brian 
K. 
Slater 
State Extension Specialist 
The Role 
of Gypsum 
as a Soil Amendment 
Gypsum is hydrated calcium sulfate (CaSO 4 
.2HP), 
and is often marketed as a soil "conditioner" for improv-
ing soil "tilth." Compared to most other calcium-rich soil 
amendments, such as limestone, gypsum is relatively 
soluble 
in water, dissolving up to 2 g per liter. The solu-
bility of gypsum, when either incorporated or surface 
applied, permits a quick release 
of calcium (Ca
2
+) 
and 
sulfate 
(SO/") ions into the soil solution. The supply of 
dissolved salt and Ca
2
+ 
ions, in particular, may reduce soil 
crusting (Figure 
1) and otherwise benefit soil structure. 
The aggregation 
of clay particles that help to form and 
stabilize soil structure is clearly enhanced 
by the presence 
of calcium on clay exchange sites. 
It 
is important to note that pure gypsum is not a liming 
agent, and it cannot be used to raise soil pH. However, 
gypsum has the potential to relieve aluminum 
(AP+) 
toxicity in acid soils and to supply calcium and sulfur (S) 
for plant nutrition. Some natural and synthetic sources of 
gypsum also contain other chemical compounds, such 
as calcium carbonate (agricultural lime), calcium oxide 
(burned lime), or calcium hydroxide (hydrated lime). 
These materials 
do 
have a liming effect when applied to 
soil, 
but are not discussed further in this publication. 
The objectives 
of this fact sheet are to review possible 
sources 
of gypsum for agricultural use in Ohio, and to 
report results from chemical and mineral analyses 
of 
representative samples. 
Yong Bok Lee 
Post-doctoral Researcher 
Jerry M. Bigham 
Professor 
Figure 
1. 
1nhibition of soybean seedling emergence by severe 
surface crusting. 
Sources and Mineral Composition of 
Gypsum Materials 
There are several possible sources of gypsum currently 
available for agricultural use in 
Ohio. 
These include: 
• Natural gypsum mined from geologic deposits 
• Synthetic gypsum produced as a by-product of elec-
tricity generation 
• Recycled casting gypsum from various manufactur-
ing processes 
• Recycled drywall gypsum 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Natural Gypsum 
Gypsum has been obtained by mining geologic deposits 
in northern Ohio, Michigan, and other locations for many 
years. Mineral purity 
of natural samples varies with the 
local geology and the mining technology employed at 
the site. Samples obtained from northern 
Ohio mines 
near Port Clinton were predominantly gypsum, but also 
contained dolomite 
[CaMg(CO)2J and quartz (SiO) 
(Table 1). Small quantities of quartz have no effect on 
soil properties, whereas dolomite is a liming agent and 
is a good source 
of magnesium (Mg). 
Table 
1. 
Mineralogical composition of gypsum samples. 
Source                  
Minerals* present 
Synthetic gypsum
l 
gypsum, quartz 
Natural gypsum2       
gypsum, quartz, dolomite 
Cast gypsum
3 
gypsum, quartz, anhydrite 
Drywall gypsum
4 
gypsum, quartz, portlandite, 
calcite 
1 Samples obtained from the W.R. Zimmer Station in Moscow, OR, 
owned by Cinergy Corporation 
2 Samples obtained from the Kwest Group at Port Clinton, OR 
3 Samples obtained from Mansfield Plumbing Products, LLC of 
Mansfield, OR 
4 Samples obtained from Transfer Services, LLC of Columbus, OH 
* 
gypsum = CaSO/2Rp, quartz = Si0
2
, dolomite 
= CaMg(C0
3
)2' 
anhydrite = CaS0
4
, 
portlandite = Ca(OR)2' calcite = CaC0
3 
ANR-20-05-page 2 
Synthetic Gypsum 
Synthetic gypsum is produced at some coal-fired power 
plants as a by-product 
of pollution control measures. The 
CleanAir Act Amendments of1990 mandate that electrical 
utilities install systems forremoval 
("scrubbing") of sulfur 
dioxide 
(SO) from flue gases that are generated during 
the burning 
of coal. The resulting materials are termedfiue 
gas desuljurization 
(FGD) by-products. Depending on the 
process, these by-products can have a variety 
of mineral 
constituents. The forced oxidation procedure used at the 
W.H. Zimmer Station in Moscow, 
Ohio, results in a high 
purity product (Table I), and the material is marketed as 
synthetic gypsum. 
In the process used at Zimmer Station, the flue gases 
are first exposed to a slurry 
of hydrated lime, and calcium 
sulfite 
(CaS0
3
.O.5HP) is initially formed by capture of 
S02 (Figure 2). The calcium sulfite is then oxidized to 
form gypsum. During the oxidation process, washing 
of 
the by-product with water removes undesirable chemi-
cal contaminants such as boron (B) and mercury (Hg). 
The final step 
of the process involves partial removal of 
water by a combination of centrifugation and vacuum 
filtration. 
The final product 
is available for drywall manufactur-
ing or for agricultural applications. To be acceptable for 
drywall manufacture, the material must have less than 
600 
parts per million (ppm) of total dissolved solids in the pore 
water, and a water content 
of less than 15% by weight. 
Material that does not meet these criteria 
is marketed as 
agricultural gypsum, and total dissolved solids 
is the major 
Figure 
2. 
The scrubbing process and gypsum production at Zimmer Station (Figure courtesy ojCINERGY Corp.). 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
criterion for diverting material to agricultural uses. Power 
plant gypsum in Ohio is permitted as a fertilizer material 
through the 
Ohio Environmental Protection Agency, and 
is monitored by the 
Ohio Department of Agriculture for 
Ca and S contents. 
Cast gypsum 
The manufacture of some products, such as plumb-
ing fixtures, requires gypsum casts 
or molds. The used 
molds can potentially 
be ground and recycled for other 
uses. The recycled material analyzed for this report 
contained mostly gypsum with a small admixture 
of 
the mineral anhydrite (Table 1), probably due to the 
dehydration 
of gypsum during the casting process. 
Anhydrite 
(CaSO 4) is calcium sulfate without water of 
hydration, and is usually similar in behavior to gypsum 
when applied to soils. 
Drywall gypsum 
Drywall consists of gypsum with a thin paper backing. 
About 
30 billion square feet of gypsum wallboard are 
manufactured each year in North America, and a consid-
erable quantity is discarded during the construction 
of 
homes, offices, and other structures. Up to 25% of the waste 
produced at new construction sites is drywall material. 
The recycled drywall analyzed in this study was obtained 
entirely from new construction projects and is regularly 
monitored 
by the Ohio Department of Agriculture as a 
fertilizer. The samples contained quartz, calcium hydroxide 
[Ca(OH)2] 
or portlandite, and calcium carbonate (CaCO 3) 
or calcite (Table 1). Demolition drywall is another possible 
source 
of gypsum but should probably be avoided for land 
application because 
of potential chemical contamination 
from paint 
or other wall coverings. 
Physical Properties of Gypsum Materials 
The cost and ease of land application are heavily de-
pendent on factors such as water content, particle size, 
and purity 
of the gypsum product. The samples collected 
for this study included products taken directly from the 
sources 
as well as materials stockpiled in the field in 
preparation for land application (Figure 3). As a result, 
the water contents varied considerably (Table 2). Water 
content was consistently small 
« 1 %) for the mined 
gypsum and the recycled cast material, neither 
of which 
were exposed 
to rainfall. Water contents of the synthetic 
FGD-gypsum were below 
10%, even though the manu-
facturer reports that the product has an average water 
content 
of 12%. Drywall gypsum contained 1 % water at 
the recycling facility, whereas contents were as high as 
19% after storage in the field. 
ANR-20-05-page 3 
Figure 
3. 
Gypsum stockpiled in thefieldfor post-harvest 
application. 
The waste drywall material was crushed and sorted 
through a 
0.5-inch screen at the recycling center. For 
agricultural uses, this material 
is best spread with a wet 
lime spreader. Fertilizer spreaders do not work well 
be-
cause the feeder holes are not sufficiently large to pass 
larger particles. The synthetic FGD-gypsum, by contrast, 
generally has excellent spreading characteristics. 
Most products sampled for this study were high purity 
and yielded < 3% water insoluble residues (Table 2). The 
mined gypsum, on the other hand, contained up to 19% 
undissolved residue after 3 days equilibration in acidi-
fied water. Much 
of the residue was dolomite, which did 
not dissolve due to large particle size and relatively low 
solubility. 
Table 
2. 
Physical properties and price (as of 12/2004) 
of gypsum. 
Material 
Water   
Particle  Price 
content)     
size   
$/ton 
% 
Synthetic 
5.55 
(3.04Y  
120 
f.!m   
7.00 
gypsum 
Natural 
0.38 (0.48)    
NA 
gypsum 
12.75 
Cast 
0.15 (0.21)    
NA 
gypsum
4 
NA 
Drywall 
10.1 (12.8) 
<0.5 inch 
11.00 
gypsum 
I 
Dried overnight at 60 degrees Celsius. 
2 Following dissolution for three days at pH <3. 
3 Standard deviation included in parentheses. 
Insoluble 
residue
2 
% 
0.4 (0.2) 
12.9 (8.1) 
0.2 
2.2 (0.3) 
4 Material is not yet available for sale for agricultural application. 
NA 
= 
not available
ANR-20-05-page 4 
Table 
3. 
Selected macro- and micronutrienP concentrations in the gypsum samples. 
Measure      
Units 
Museum    
Synthetic 
specimen
2 
gypsum 
Calcium        
%        
22.6     
23.0 (0.0)4 
Magnesium     
%        
0.01      
0.03 (0.01) 
Sulfur         
%        
18.6      
18.7 
(0.1) 
Boron         
ppm      
<13.1     
26.7 (8.7) 
Iron          
ppm       
<1       
264 (129) 
Manganese    
ppm       
0.1       
5.5 (2.3) 
Phosphorus    
ppm       
3.8      
16.7 (9.4) 
I 
Micronutrient data obtained by EPA method 3050 (US EPA, 1996). 
2 The museum specimen is included as a pure sample of gypsum. 
3 Calculated content in a 100% pure product. 
4 Standard deviation included in parentheses. 
Natural      
Cast      
Drywall 
Ideal analysis
3 
gypsum     
gypsum     
gypsum 
19.1 (2.2)   
22.4 
(0.0)   
21.9 (0.2)       
23.3 
1.35 
(0.30)  
0.05 (0.00)  
0.22 (0.01) 
15.1 (1.2)    
19.3 (0.2)    
18.1 (0.3)       
18.6 
9.4 
(0.9)    
0.4 (0,4)    
7.3 (4.5) 
1045 (148)    
44 (7)     
547 (92) 
14.6 (2.9)    
9.1 (0.0)    
9.4 (1.6) 
30.6 (7.6)    
7.5 (0.3)    
51.6 (3.5) 
Table 
4. 
Trace metal contenP of gypsum from different sources compared with U.S. EPA Part 503 pollutant 
concentration limits for excellent quality biosolids. 
Pollutant        
Museum     
Synthetic      
Natural 
Cast gypsum 
(ppm 
= 
mg kg-I)   
specimen     
gypsum      
gypsum 
Arsenic            
<0.52     
0.56 (0.05)3      
<0.52        
<0.52 
Cadmium          
<0.48        
<0.48        
<0.48        
<0.48 
Chromium          
0.01      
1.30 (0.85)    
1.38 (0.32)    
0.07 (0.00) 
Cobalt             
<0.48        
<0.48      
0.53 (0.04)      
<0.48 
Copper            
<0.48      
1.16 (0.66)    
1.33 (0.30)    
1.40 (0.21) 
Lead              
<0.48      
0.80 (.30)     
2.92 (0.30)    
0.57 (0.08) 
Mercury           
<0.26        
<0.26        
<0.26        
<0.26 
Molybdenum       
<0.24     
0.51 (0.26)    
1.28 (0.04)      
<0.24 
Nickel             
<0.24      
0.73 (0.18)    
1.42 (0.23)      
<0.24 
Selenium          
<1.45      
5.51 (3.47)      
<1.45        
<1.45 
Zinc              
<0.24      
3.88 (2.78)    
0.91 (0.49)      
<0.24 
I 
Data obtained by EPA method 3050 (USEPA, 1996). 
2 Part 503-Standards for the Use or Disposal of Sewage Sludge; 503.13, Table 3. (USEPA, 1993). 
3 Standard deviation included in parentheses. 
4 NR 
= 
not regulated. 
5 Ceiling concentration limit for molybdenum is 75 ppm; 503.13, Table 
I. 
(US EPA, 1993). 
~ 
Drywall gypsum 
Part 503 
Table 3
2 
0.98 (0.11)        
41 
<0.48          
39 
1.09 (0.09)       
1200 
<0.48         
NR4 
0.95 (0.14)       
1500 
0.70 (0.02)       
300 
<0.26          
17 
<0.24          
-
5 
0.83 (0.12)       
420 
1.85 (0.04)        
36 
3.08 (0.45)       
2800
Plant Nutrient Content of Gypsum Samples 
All the materials tested would be excellent sources ofCa 
and S for plant nutrition (Table 3). Because ofits dolomite 
content, the mined gypsum is also a source 
of Mg. 
Boron is a plant micronutrient and some crops have 
a relatively high demand for B; however, others can 
be 
sensitive to elevated levels. Unwashed FGD by-products 
can have levels 
of B sufficiently high to result in toxic-
ity to com. Washing 
of the by-product in the process of 
gypsum formation lowers B contents to safe levels if 
recommended application rates are used. 
Trace Metal Content of Gypsum Samples 
Chemical analyses of the gypsum materials collected 
in this study showed that trace metals were present at 
low concentrations in all samples (Table 4). As a point 
of reference, the metal contents were much lower than 
concentration limits identified 
by government regula-
tions for land application 
of excellent quality biosolids 
(USEPA, 1993), and calculated metal loadings with ap-
plication rates 
of2.23 ton ac-1yrl (5 Mg ha-1yrl) were 100 
to 10,000x lower than annual loading rates permitted by 
these same regulations (see Part 
503-Standards for the 
Use or Disposal of Sewage Sludge; 503.13, Tables 1-4, 
ANR-20-05-page 5 
for details). Gypsum from any of the sources examined 
could thus be applied without restriction for trace metal 
loading; however, 
samples from a given source should 
always be tested prior 
to application. 
There is also no 
demonstrated benefit 
of application rates greater than 2 
tonac-1yr1 for agronomic 
or horticultural crop production 
in 
Ohio, and biennial applications are probably adequate. 
Greater quantities could result in seedling damage to salt 
intolerant species, especially 
if applied near the time of 
planting. Autumn applications are recommended. 
References 
u.s. EPA. 1993. 40 CFR Part 503-Standards for the 
use and disposal 
of sewage sludge: Final rule. Federal 
Register 58:9248-9415. Washington, DC. 
U.S. EPA. 1996. Method 3050. Acid Digestion of Sedi-
ments, Sludges, Soils and Oils. SW-846. Washington, 
DC. 
Acknowledgement 
This publication was produced through a cooperative 
effort between 
Ohio State University Extension and the 
College 
of Food, Agricultural, and Environmental Sci-
ences. 
Visit Ohio State University Extension's web site "Ohioline" at: http://ohioline.osu.edu 
OSU Extension embraces human diversity and is committed to ensuring that all educational programs conducted by Ohio State University Extension are available 
to clientele on a nondiscriminatory basis without regard to race, color, age, gender identity or expression, disability, religion, sexual orientation, national origin, or 
veteran status. 
Keith 
L. 
Smith, Associate Vice President for Agricultural Administration and Director, OSU Extension 
TOO No. 800-589-8292 (Ohio only) or 614-292-1868 
All or part of this fact sheet may be copied without permission for educational, non-prOfit purposes. Credit must be given to "Ohio State University Extension." 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
State of Wisconsin \ DEPARTMENT OF NATURAL RESOURCES 
WISCONSIN 
DEPT. Of NATURAL RESOURCES 
March 20, 2008 
Jim Doyle, Governor 
Matthew J. Frank, Secretary 
Gloria L McCutcheon, Regional Director 
MAR 
2 5 200B 
Robert Meidl, Senior Engineer 
We Energies 
333 W. Everett Street 
Milwaukee, WI 53203 
Southeast Region Headquarters 
2300 N. Dr. Martin Luther King, Jr. Drive 
Milwaukee, Wisconsin 53212-3128 
FAX 
414-263-8606 
Telephone414~263-8500 
TTY Access via relay - 711 
J 
FID:230056310 
Kenosha County 
SW/APP 
Subject: Conditional Grant of Exemption for Beneficial Use of FGD Gypsum from the We Energies 
Pleasant Prairie Power Plant, Pleasant Prairie, Wisconsin 
Dear 
Mr. 
Meidl: 
The Department is issuing this conditional grant of exemption from regulation under s. 289 Stats., for the use of 
flue gas desulfurization (FGD) gypsum generated at the We Energies Pleasant Prairie Power Plant (P4) as a 
agricultural fertilizer or soil additive. The FGD gypsum is generated as a byproduct 
of the exhaust scrubbers 
installed 
at the plant to control sulfur dioxide emissions from the combustion of coal to generate power. The 
agricultural use 
of this byproduct will be subject to the conditions ofthis exemption. Other beneficial uses ofthe 
FGD gypsum (i.e. for wallboard production or Portland cement) will continue to be subject to the requirements of 
ch. NR 538 Wis. Adm. Code. 
This grant 
of exemption allows the use ofFGD gypsum from a specific source for agricultural use as a fertilizer 
or soil additive and 
will terminate in five (5) years from the date of this approval. At that time, We Energies may 
apply to 
the Department for an extension of the exemption based on documentation of the performance of the 
gypsum use. 
We Energies may also apply to the Department at any time to amend the exemption to include FGD 
gypsum from other units, provided they can demonstrate that the gypsum 
is produced in a substantially similar 
manner 
and has similar chemical properties and physical characteristics as the P4 FGD gypsum included 
in 
this 
exemption. 
The conditions 
of the approval include annual byproduct characterization, determination of appropria,te 
application rates, use of best management practices for application, storage and transportation of the gypsum, and 
annual reporting requirements. The conditions require that We Energies, or its broker, inform any potential 
agricultural end user 
of the recommended application rates and practices and other requirements for its 
responsible use. The annual reporting requirements may be submitted to the Department along with the annual 
reporting required for the other beneficial reuses 
of We Energies byproducts. 
Licensing 
of manufacturers and distributors of agricultural fertilizers and related products is managed through the 
Department 
of Agriculture, Trade and Consumer Protection (DATCP). Please contact Charlene Khazae, DATCP 
Program 
Manager at (608) 224-4541 to determine what other requirements may be needed prior to sale or 
distribution 
of this byproduct for agricultural use. 
Under the authority of the grant of exemption, FGD gypsum that is beneficially used in agricultural applications is 
exempted from tonnage fees. 
dnr.wi.gov 
wisconSin.gov 
o 
Printedon 
Recycled 
Poper 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Mr. Robert Meidl,03/20/2008                                                      
2 
If you have any questions concerning this grant of approval, please contact Philip Fauble, Beneficial Use 
Coordinator, at (608) 267-3538. 
Sincerely, 
Frank Schultz, Supervisor 
Waste and Materials Managemen 
Southeast Region 
Cc:   
Philip Fauble - W 
Al3 
Suzanne Bangert - W 
Al3 
Dennis Mack - W 
Al3 
Bizhan 
Sheikholesl~mi 
- SER, Waukesha 
o. 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Mr. Robert Meidl, 
03/20/2008 
FLUE GAS DESULFURIZATION (FGD) GYPSUM FOR 
AGRICULTURAL USE SUMMARY 
To comply with the provisions of the 1990 Clean Air Act, coal fired power plants 
statewide have begun installing systems to reduce their 
emissions of sulfur dioxide gas. 
These are commonly referted to as flue gas desulfurization (FGD) systems. FGD 
systems installed on utility boilers to date have typically been one of three main 
technologies 
- Wet Scrubbers.Spray Dry Scrubbers, or Dry Scrubbers. These systems 
involve injecting a calcium 
or sodium based alkaline reagent into the boiler exhaust gas, 
which reacts with sulfur dioxide and removes it from 
the 
exhaust gas. Solids formed in 
the process from the reaction between the reagents and sulfur dioxide are removed from 
the system and are typically 
referred to as flue gas desulfurization materials. Flue gas 
desulfurization systems that 
utilize a caJcium based reagent (typically limestone or lime) 
generally produce a calcium 
sulfate or calcium sulfite based material depending on the 
scrubber technology employed. 
Spray dry and dry scrubbers employing a calcium based 
reagent typically produce 
a calcium sulfite (CaS03) material which is removed from the 
flue gas system with or without the majority 
of the fly ash in a precipitator or fabric filter 
system depending on 
where the reagent is injected. This approval does not apply to 
FGD material produced by dry,spray or dry scrubber systems. 
Wet scrubbers employing a calcium based reagent typically produce a material that is 
mostly in the form 
of calcium sulfite (CaS03) with lesser 
~ounts 
of calcium sulfate 
(CaS04). Plants that stop at this step of the process areteft with a FGD material which 
can be difficult to dewater and must be stabilized with fly ash or other materials prior 
to 
disposal or beneficial use. Some wet scrubber operations choose to process the FGD 
material further by initiating a forced oxidation process that blows air into the calcium 
sulfite to convert it into a relatively pure calcium sulfate (gypsum) byproduct. We 
Energies 
Pleasant Prairie Power Plant Unit 1 and 2 have wet scrubbers employing a 
calcium based reagent (limestone) in a slurry form and a forced oxidation system which 
produces calcium sulfate slurry in an absorber tower upstream 
of the flue gas chimney. 
The calcium sulfate slurry is sent to be dewatered on a vacuum filter belt to 
approximately 
10% moisture to produce a greater than 90% pure gypsum product 
(commonly referred to as FGD gypsum). A small fraction 
of the calcium sulfate slurry is 
regularly removed 
or blown-down to a water treatment system prior to dewatering to 
remove chlorides and fmes from the process. The solids from the 
water treatment system 
are ultimately captured and removed in a filter press. Tbis material is typically referred 
to 
as water treatment system filter cake and consists of fine gypsum particles, unreacted 
limestone fines, calcium sulfite particles and a minor amount 
offly ash. 
FGD gypsum and the water treatment filter cake produced in the flue gas desulfurization 
system at 
Pleasant Prairie Power Plant are defined as an "industrial byproduct" in 
accordance with s. 
NR 538.03(3) and (4), Wis. Adm. Code and can be beneficially used 
under this Code. The gypsum 
is typically of a quality suitable for beneficial use in 
wallboard or Portland cement production under 
s. NR 538.10(1.) Wis. Adm. Code and, in 
1
Mr. Robert Meidl, 
03/20/2008 
fact, most of the gypsum produced at the Pleasant Prairie Power Plant is currently being 
shipped for use in wallboard manufacturing. 
We Energies also requested approval from the Department to utilize their gypsum 
byproduct for agricultural uses. While 
the gypsum is defined as an "industrial . 
byproduct" that can be regulated under Ch. NR 538,Wis. Adin. Code, agricultural uses 
are not included 
as an accepted beneficial reuse under the code. Landspreading is 
addressed in Ch. NR 518, Wis. Adm. Code, but the rules are directed more at specific 
landspreading facilities rather than approval for wholesale distribution and use. 
Therefore, the best option 
was to approve the agricultural use of the FOD gypsum under 
the statutory exemption provisions of s. 289.43(8} Stats. 
We Energies based their request for agricultural use of the FOD gypsum on mined 
gypsum's historic use as a soil amendment in certain applications. The benefits of 
gypsum for agriculture include acting as a source of sulfur that is lost during phosphorus 
additions, as a source 
of calcium for improved plant growth, and as a method for altering 
soil properties 
in clay to improve water infiltration. Synthetic gypsuml;tctually has some 
advantages to mined gypsum in that it 
tends to be finer-grained and more soluble. 
Analyses submitted 
by We Energies indicate that the byproduct gypsum produced at the 
Pleasant Prairie Plant (P4) is similar in composition to mined gypsum currently being 
marketed for agricultural use. In fact, the FOD gypsum tends to be a more pure gypsum 
product than mined gypsum. The possible exception is the wastewater filtercake material 
which is currently being regulated under ch. 
NR 214 Wis. Adm. Code and the plant's 
WPDES pennit and is not included in this approval. 
The analyses also show that sulfate is leachable from the FODgypsum at levels that far 
exceed the ch. 
NR 140 groundwater enforcement standards. However, this very property 
is what makes 
the POD gypsum valuable for agricultural applications. As with most 
agricultural fertilizers and soil amendments (i.e. pesticides, ammonia, lime), these 
applications 
only cause detrimental effects if they are not used properly. The conditions 
included in this approval should assure that the 
POD gypsum is applied properly.The 
manufacture and distribution 
of agricultural products that claim to be either a fertilizer or 
soil additive is regulated by the Department of Agriculture, Trade and Consumer 
Protection 
(DATCP) under chapter 40, Wis. Adm. Code: The FOD gypsum byprodl;lct 
appears to meet their general definition of a gypsum fertilizer in that it .contains more 
than 70 percent calcium sulfate with combined water. 
2
Mr. Robert Meidl, 
03/20/2008 
The Department finds: 
BEFORE THE 
STATE OF WISCONSIN 
DEPARTMENT 
OF NATURAL RESOURCES 
CONDITIONAL 
GRANT OF EXEMPTION 
FOR 
THE BENEFICIAL USE OF 
FLUE GAS DESULFURIZA TION GYPSUM 
IN AGRICULTURAL APPLICATIONS 
FINDINGS OF 
FACT 
I.     
We Energies owns and operates the Pleasant Prairie Power Plant (P4) located along 95
th 
Street in the Village of Pleasant Prairie, in Kenosha County, Wisconsin. 
2.     
To reduce sulfur dioxide emissions, We Energies installed a system at their Pleasant 
Prairie Power Plant 
that adds limestone slurry to the exhaust gas from their coal-fired 
boilers. The limestone reacts with sulfur dioxide gas to produce a flue gas 
desulfurization (FGD) material as a byproduct. 
3.    
The Pleasant Prairie Power Plant contains two FGD systems that, combined, produce 
approximately 
100,000 to 150,000 tons of material per year. The FGD systems operate 
as a forced oxidation process to produce both a relatively pure FGD gypsum byproduct 
(over 95 percent hydrous calcium sulfate - gypsum) and a mostly gypsum wastewater 
treatment filter cake. 
4.     
The majority of the FGD gypsum is currently being beneficially used to produce 
wallboard 
in accordance with s. NR 538.10(1) Wis. Adm. Code. 
5.     
On May 24, 2007, We Energies submitted an Exemption from Solid Waste Regulation 
.request for use 
of their FGD gypsum as 
an 
agriculrural'stipplement, and supporting .. 
documentation. 
6.     
Subsequent to the submission of the original Exemption Request, We Energies withdrew 
the request to include the FGD water treatment system filter cake as part 
of the 
exemption for use as an agricultural supplement. 
7.     
Based on the bulk analysis submitted to the Department by We Energies, none of the 
metals concentrations 
in 
the P4 FGD gypsum exceeds the high quality pollutant 
concentration limits in Table 
3 ofs. NR 204.07(5) Wis. Adm. Code for the land 
application 
of sludge.
Mr. Robert Meidl, 
03/20/2008 
8.     
Additional documents considered in connection with the review of the exemption request 
include the following: 
a.    
Bulk Analysis and ASTM D3987 leachate test results conducted by We Energies 
in accordance with 
s. NR 538.06(3) Wis. Adm. Code from the P4 FGD gypsum 
and wastewater treatment filter cake. 
b.     
"Agricultural applications of FGD gypsum in soil and water management" 
by L. 
Darrell Norton (2007) and 
"Barriers to Increased FGD Land Application 
Uses" 
by EPRI (2006). 
c.    
Communications with Department Wastewater staff (paul Luebke, October 8, 
2007) and the Department of Agriculture, Trade and Consumer Protection staff 
(Charlene Khazae, August 24, 
2007). 
d:    
Meeting between Department staff and We Energies officials along With 
~:(tour  
of 
the FGD process at the Pleasant Prairie Power Plant on November 29, 2007. 
9.    
Additional facts relevant to the review of the exemption request include: 
a. We Energies is required to comply with air pollution control requirements to 
reduce emission concentrations of sulfur, which it has decided to achieve by, 
among other processes, the use 
of a forced oxidation flue gas desulfurization 
system, which produces FGD gypsum 
.. 
b. Analytical results indicate that the FOD gypsum has a high gypsum content, low 
concentrations 
of contaminants such as metals, and does not contain natural or 
synthetic organic chemicals. 
c. Gypsum has value as a soil conditioner, soil amendment and fertilizer for certain 
field crops and soil types, 
if applied at agronomic rates determined by soils tests 
and crop needs. 
d. FGD gypsum is produced as a fine-grained filtered precipitate, light brown in 
color, with s0il-like 
consistenoy" no 0dor, and-low moisture content, and can be 
readily handled by conventional loading and field application equipment. 
e. Agronomic use 
of FGD gypsum displaces use of naturally-occurring gypsum 
from nonmetallic mines and captive gypsum from other industrial or recycling 
processes, 
f.  Agronomic use of gypsum includes transport of bulk product by truck, 
stockpiling, loading and spreading by agricultural machinery, and incorporation 
into soil. 
2 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Mr. Robert Meidl, 
03/20/2008 
g. Impacts due to mishandling or excessive application ofFGD gypsum should be 
limited to temporary adverse changes to soil texture or structure and plant 
nutrition and to increased sulfate concentrations in groundwater and surface 
water, 
if concentrations of other contaminants are maintained at low levels as 
shown in analytical results. 
10.   
The special conditions set forth below are needed to ensure that agricultural use of P4 
FGD gypsum is conducted so as to minimize environmental effects, that appropriate 
records are kept 
of FGD gypsum quality and volumes utilized, and that the program for 
agricultural use 
ofFGD gypsum will be assessed periodically. 
CONCLUSIONS OF LAW 
1.     
Flue gas desulfurization gypsum is an industrial byproduct in accordance with s. NR 
538.'03 (3) 
and(4)Wis~    
Adm. Code and s. 289.01(33) Stats. 
2.    
The Department has the authority under s. NR 538.08(7) Wis. Adm. Code to 
conditionally approve a beneficial use that does not meet the beneficial uses or standards 
specified in ch. 
NR 538 Wis.Adm. Code on a case-specific basis in accordance with s. 
289.43(4), (7), and (8) 
Stats. 
3.    
The Department has the authority under ss. 289.43(8), Stats. to issue a grant of exemption 
from regulation under 
s. 289 Stats. and to authorize an individual generator to utilize a 
specified solid waste at a site other than a licensed solid waste disposal facility. 
4.    
The Department has the authority under 
s. 289.43 (8)(c), Stats., to impose periodic testing 
and other conditions on a grant 
of exemption. 
5.    
The conditions set forth are needed 
to ensure that the use of flue gas desulfurization 
gypsum from the 
Pleasant Prairie Power Plant for use as an agricultural fertilizer or soil 
additive will not result in environmental pollution as defined in 
s. 289.01 (8), Wis. Stats. 
CONDITIONAL GRANT OF EXEMPTION 
The Department hereby grants an exemption to We Energies to beneficially use FGD gypsum 
generated from 
Pleasant Prairie Power Plant as an agricultural fertilizer, soil conditioner, and/or 
soil additive under the 
follovling conditions: 
General 
1. This grant of exemption shall apply onJy to the forced oxidation process FGD gypsum 
material produced at the We Energies 
Pleasant Prairie Power Plant and not to the 
filtercake material produced by the FGD water treatment system. 
3 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Mr. Robert Meidl, 
03/20/200S 
2. This grant of exemption shall apply for a period of five years from the date of signing. 
After that time, We Energies may request a renewal of this grant of exemption. 
Material Testing 
FGD gypsum Characterization 
3. We Energies shall perfonn a material characterization as specified below, prior to its use. 
a.     
A total elemental analysis in accordance with EPA SW-S46 test methodologies, 
for the metals listed in NRS3S.22 Table lB. 
b.     
pH 
c.    
Nutrient content including nitrate and nitrite-nitrogen, Kjeldahl-nitrogen, 
phosphorus and potassium. 
d.     
Salt content including boron,calcium, chloride, flouride and sulfate. 
The testing shall be performed by a Wisconsin certified laboratory and the results 
submitted to the Department. 
4. The FGD gypsum shall be characterized in accordance with Condition #3 (above) and 
reported to the Department annually or whenever the facility changes its flue gas 
desulfurization process. 
Land Application of FGD Gypsum 
Information Distribution 
5. We Energies shall inform those customers that receive or purchase FOD gypsum of the 
following agronomic and environmental practices specified in conditions 6 through 
14 of 
this conditional grant of exemption regarding the use ofFGD gypsum as a fertilizer, soil 
conditioner, or soil amendment. Guidance information shall include a recommendation to 
apply the FGD gypsum within one year or as soon as practical. 
Application Rates 
6. We Energies shall determine, either 
in the field or through published research, 
appropriate application rates for each soil type where the gypsum may be used and the 
amount needed to achieve the desired effect. The application rates shall include both a 
recommended and maximum 
IQading rate per acre as well as recommendations regarding 
timing 
of the application and appropriate intervals between applications. 
7. All information generated by We Energies regarding soil application rates shall be 
submitted to the Department and the 
UW-Extension and USDA offices in the counties 
where the 
FOD gypsum will be applied. 
4 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Mr. Robert Meidl, 03/20/2008 
Environmental Considerations during Application 
8. FGD gypsum shall not be repeatedly applied such that excessive accumulation of 
hazardous substances occur in vegetation or soil, or cause a detrimental effect on surface 
water or groundwater quality. 
9. Recognized best management practices for surface water protection shall be utilized to 
eliminate 
impacts to wetlands or surface water bodies, especially if application is done in winter. 
These practices include plowing, disking or otherwise incorporating the FGD gypsum 
into the soil layer at appropriate intervals to minimize 
stonn water runoff. A vegetative 
buffer strip shall also be maintained between any navigable water and the application 
area and no FGD gypsum may be deposited in areas containing ponded or standing water. 
10. All applications ofFGD gypsum are to be performed in accordance with accepted 
agricultural practices. 
Storage 
11. FGD gypsum may be stored outdoors at the application site prior to Use for no more than 
one (1) year after 
the delivery date. FGD gypsum stored under cover may be stored 
longer than one year 
or as long as is practical prior to application. 
12. All FGD gypsum shall be stored at farm sites in a manner that will prevent excessive 
dusting. 
13. Best management practices should be followed to prevent runoff 
of the stored material. 
Hauling 
14. All transportation of the FGD gypsum to the application site shall be done in accordance 
with s. 
NR 538.16(2) Wis. Adm. Code requirements. 
Reporting 
15. We Energies shall submit an annual report to the Department no later than April 1
51 
on the 
use 
ofFGD gypsum in the previous calendar year. This infonnation may be included 
with the Annual Certification fonn for other industrial byproduct uses reported to the 
Department by We Energies in accordance with 
s. NR 538.14(2) Wis. Adm. Code. The 
report shall contain the following infonnation: 
a.    
Total number 
of tons ofFGD gypsum generated. 
h.    
Total number 
oftons ofFGD distributed for agricultural use. 
5
Mr. Robert Meidl, 
03/2012008 
c.    
The name and address of all persons or brokers to whom FGD gypsum was sold 
or distributed over the past year, including the amount utilized by each user. 
d.    
The results of the material characterization analyses required per Condition 
#4 
of 
this approval. 
We Energies and/or any 
of its agents will be responsible for obtaining and complying with any 
applicable federal, state or local licensing or permitting requirements regarding the application, 
production, distribution or sale 
of FGD gypsum for agricultural use. 
The Department retains the jurisdiction to either require 
the submittal of additional information 
or to modify this approval at any time if, in the 
Department's opinion, conditions warrant further 
modifications. Unless specifically noted, the conditions 
of this approval do not supercede or 
replace any previous conditions 
of approval for this facility. 
NOTICE OF APPEAL RIGHTS 
If you believe you have a right to challenge this decision made by the Department, you should 
know that Wisconsin statutes, administrative codes and case law establish time periods and 
requirements for reviewing Department decisions. 
To seek judicial review ofthe Department's decision, sections 227.52 and 227.53, 
Stats.~ 
establish criteria for filing a petition for judicial review. Such a petition shall be filed with the 
appropriate circuit court and shall be served on the Department. The petition shall name the 
Department 
of Natural Resources as the respondent. 
Dated:'~  ~ }~ 
DEPARTMENT OF NATURAL RESOURCES 
Frank '. chultz, Supervisor 
Waste 
and Materials Manage 
Southeast Region 
6 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
State of Wisconsin 
Jim Doyle, Governor 
Department of Agriculture, Trade and Consumer Protection 
Rod Nilsestuen, Secretary 
Division of Agricultural Resource Management 
Permit to Distribute Soil-and-Plant Additive Product 
Section 94.65 (3), Wisconsin Statutes 
This certifies that: 
Wisconsin Electric 
Power Co 
dba We Energies 
"231 W Michigan St 
Milwaukee                 
"WI     
53203 
Wisconsin Soil-and-Plant Additive License Number: 65 - 017311 
is hereby issued a permit to distribute the following soil-and-plant additive in Wisconsin, 
in accordance with section 94.65, Wisconsin Statutes: 
We Energies Gypsum 
(permitted label attached) 
This permit is "non-transferable and remains in effect until substantial changes are 
made in the product formulation, label or advertising literature: 
1) 
The active ingredients; 
2) The recommended amount or frequency 
of the product; and 
3) Any performance, use or efficacy claims which exceeds the approved label and 
promotional materials. 
Charlene Khazae, Fertilizer 
Program Manager 
Agricultural Resource Management Division 
(608) 224-4541 
Issue Date:    
5/5/2008 
Soil-and-Plant 
Additive Permit #: 017311 -  329 
Agriculture generates 
$51.5 
billion/or Wisconsin 
2811 Agriculture Drive • PO Box 8911 • Madison, WI 53708-8911 • 608-224-5012 • Wisconsin.gov 
'" 
. " 
~      
. 
",.-
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Material Description: 
We Energies 
Gypsum 
We Energies Gypsum is a high purity gypsum material derived from a flue gas 
desulfurization (FGD) process installed at the Pleasant Prairie Power Plant. 
. It is 
available as a bulk powder material with a 
light tan color and typical moisture 
levels between 3% and 20%. 
Act.ive Ingredient:           
. . 
. ,   
:'~ 
Calcium Sulfate Dihydrate (CaS04. 2H
2
0) ...... 90% (minimum) 
Inert Ingredients: 
Calcium Sulfite Hemihydrate ................ 5% (maximum) 
Calcium 
Car~onate 
............................ 5% (maximum)                              
, . 
Information regarding the levels of trace metals in We Energies Gypsum is available from We 
Energies 
(414-221-4274) 
Location:  
We Energies Gypsum is produced at: 
Pleasant Prairie Power Plant: 
8000 95
th 
Street 
Pleasant Prairie, WI 
53158 
Transportation: 
We Energies Gypsum is typically loaded into open top, end dump trailers for .. 
transportation to end use locations. Trailers must have locking tailgates and 
cover tarps to prevent dust and spills during transport. 
Net Weight: _______ (Shipment weight will depend on trailer capacity) ... 
Typical Use: 
Research has shown that when applied at proper rates, gypsum functions as a 
soil additive to ... 
"    
loosen heavy clay soils 
•     
promote water infiltration, drainage and aeration 
..       
prevent surface crusting                                
. . 
•     
reduce runoff and erosion 
Application Rates: 
Apply 
We Energies Gypsum at rates recommended by local county extension 
agents and agricultural 
specialists.               
. 
We Energies makes no guarantee as to the performance of We Energies    
. 
Gypsum when used as a soil additive and recommends consulting agricultural 
specialists prior to use. 
Manufacturer and permit holder: 
We Energies 
333 W. Everett St 
Milwaukee, 
WI 53203 
414-221-4274 
fD)[E©~UID~~ 
UU  
MAY  5 2008 
~ 
By
EXHIBIT B
Proposed FGD Gypsum Use In 
Agriculture 
Presented to 
Illinois Environmental Protection Agency 
By 
Bruce Ramme, PhD, PE 
Robert 
Paulson 
April 1. 2009 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
II 
I ntrod uctions 
II Short Overview Presentation 
Back to top
II Application Request 
II Discussion 
II Follow-up 
2 
- 23,400 sq mi service territory in WI and Upper Peninsula of Michigan 
- 2.4 million people served 
• Electric 
_ Natural 
Gas 
• Steam           
•  Water 
- 26 generating facilities 
• Coal            
_ Natural Gas 
• Hydro           
_ Wind 
- Current generating capacity of 5676 MW 
- Power the Future 
• Emission control upgrades - SCR & FGD 
• Pleasant Prairie Power Plant (P4) 
• Oak Creek Power Plant (OCPP) 
• Expansion 
• 1230 MW generating capacity at OCPP 
• 
SCRand FGD 
• On-line 2007-2012
800,000 
700,000 
600,000 
500,000 
In 
C 
.... 
0 
400,000 
300,000 
200,000 
-+-CCP 
Produced (Tons) 
100,000 
_CCP 
Utilized (Tons) 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Bottom Ash 
• Concrete 
215,000 
• Ash Fuel 
101,000 
• Sub-Base (Bottom Ash)          
106,000 
• Manufactured Aggregate          
88,000 
• Mine Subsidence Prevention       
75,000 
• Cement Raw Feed                
54,000 
• Stabilization (Soil & Asphalt)      
29,000 
• Miscellaneous                   
10,000 
• Gypsum 
• Wallboard Manufacturing       
62,000 
• Agriculture                    
7,000 
• Stock Pile 
9,000 
• 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
• 2007 Production 
• ACAA National     
= 12,300,000 tons 
.2007 U.S. Reported Utilization (75%») 
• Wallboard         
= 
8,254,849 tons 
• Concrete          
= 
118,406 tons 
• Cement           
= 
656,885 tons 
• Agriculture         
= 
115,304 tons 
• Other             
= 
393,063 tons 
e
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
• Spring of 2007 - Farmers calling We Energies 
for information on availability 
of gypsum 
• Background information collection 
(current use, why, how much, etc.) 
• Analysis of P4 gypsum, commercial gypsum-
containing products 
• WDNR Solid Waste Exemption Request 
submitted - 
5/24/07 
• 
WDNR Conditional Grant of Exemption received 
- 
3/20/08 
• 
WI DATCP Soil and Plant Additive License 
granted - 
5/5/08 
13 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
• Initial 5 year term 
• Annual FGD Gypsum characterization 
• Property owner notification 
• Application rates 
• Storage requirements 
• Transportation 
• Annual reporting 
14 
• We Energies continued commitment to cost effective 
beneficial use 
of coal combustion by-products 
• Increased FGD gypsum production with Oak Creek 
Power Plant (OCPP) expansion and upgrades coming 
on-line 
in 2009-2012 
• Current 
market trend in wall board production 
• Successful agriculture usage in 2007/2008 and 
increasing demand for product in 
2009 
• Inquiry 
from IL agricultural community regarding 
availability 
of P4 gypsum 
• Close proximity to additional agricultural acreage not 
covered by 
WI approval 
• 
corridor 
No natural or FGD gypsum produced north of 1-80  C 
~ 
15                                                           
-
•  Sec. 3.140. "Coal Combustion Waste" means any fly ash, bottom ash, slag, 
or 
flue 
gas 
or fluid bed boiler desulfurization by-products 
generated as a 
result of combustion of: 
•  1) coal 
•  Sec. 3.135 (a). "Coal Combustion By-product" (CCB) means coal 
combustion waste when used beneficially in any of the following ways: ...... . 
•  Sec. 3.135 (b). To encourage and promote the utilization of CCB in 
productive and beneficial applications, upon request by applicant, the 
Agency 
shall make a written beneficial use determination that coal 
combustion waste is CCB when used in a 
manner other than 
those 
specified in subsection 
(a) of this Section if the applicant demonstrates that 
the use 
of coal combustion waste satisfies all of the following criteria: 
•  The use will not cause, threaten, or allow the discharge of any contaminant into 
the environment; 
•  The use will otherwise protect human health and safety and the environment; 
and 
•  The use constitutes a legitimate use of the coal combustion waste as an 
ingredient 
ingredient 
or 
or 
raw 
raw 
material 
material 
that is an effective substitute for an analogous e 
• 
16 
-
The use will otherwise protect human 
health and safety and the environment 
17 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
2~ 
Title 35 Part 742 Appendix A Table G: Concentrations of Inorganic Chemicals In Background Solis - Counties Outside 
Metropolitan Statistical areas 
18 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
• Readily soluble sauce of Sulfur one 
reason for application 
• Sulfate leaching of other sulfate 
containing fertilizers/amendments 
• Ammonium sulfate - 35,300 mg/L sulfate 
• Aluminum sulfate 
- 24,900 mg/L sulfate 
• Pelletized 
mined gypsum - 1750 mg/L sulfate 
• 
P4 gypsum - 1400 mg/L sulfate 
20 
Part 391.420 Ma)(imum 
lifetime 
Synthetic Gypsum 
Application Loading Rates 
applications    
Ma)(imum 
Concentration 
Heavy 
Metals 
(tons/acre) to     
annual 
(as applied basis)      
lifetime     
Annual    
reach lifetime  application rate 
Parameter        
mq/kq      
I 
bit on       
Ib/acre      
Ib/acre     
loading 
rate    
(tons/acre) 
Antimonv          
0.13        
0.00026        
700                  
2692308 
Arsenic         
< 0.43        
0.00086        
100                   
116279 
Cadmium          
0.042      
0.000084         
10          
2       
119048        
23810 
Chromium       
< 0.06        
0.00012        
440         
44      
3666667       
366667 
Copper            
1.2          
0.0024        
250                   
104167 
Lead              
1.5           
0.003       
1000                   
333333 
Manqanese      
< 0.026      
0.000052        
900                 
17307692 
Mercury           
0.97        
0.00194          
7                     
3608 
Nickel            
2.6          
0.0052        
100                    
19231 
Selenium          
12            
0.024          
8                      
333 
Silver           
< 0.63        
0.00126        
178                   
141270 
Zinc              
5.5           
0.011         
500                    
45455 
• 2006 MWRDGC Hg concentrations in land applied 
biosolids averaged 1.69 mg/kg (0.059 to 4.19 mg/kg) 
21
• Chemically the same as natural gypsum 
• Leachate meets Class I Potable Groundwater 
Standards 
• Sulfate - leaching potential no greater than other common 
agriculture products used 
in Illinois including: 
• Mined Gypsum 
• Fertilizers 
• Ammonium sulfate 
• Aluminum sulfate 
• Heavy metal application rates well within lifetime and 
annual loading rates established for land application of 
biosolids 
22 
The use constitutes a legitimate use of 
Back to top
the coal combustion waste as an 
ingredient 
or raw material that is an 
Back to top
effective substitute for an analogous 
Back to top
ingredient or 
raw material 
23 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
• Ammonia Nitrogen: <4.0 
mg/kg 
«0.01 Ib/ton) 
• Total Kjeldahl 
Nitrogen: 24 
mg/kg 
(0.05 Ib/ton) 
• 
Phosphorus: 18 
mg/kg 
(0.04 Ib/ton) 
• 
Potassium: 95 
mg/kg 
(0.2 Ib/ton) 
• Calcium: 204,300 
mg/kg 
(409 Ib/ton) 
• Sulfate: 153,900 
mg/kg 
(308 Ib/ton) 
• 
Gypsum (CaS0
4
-2H
2
0): 
> 
95% (air dry basis) 
24 
• NRCS Nutrient Management (Code 590) 
• 
Nutrient Application Guidelines 
• Calcium 
• Sulfur 
• 
Gypsum 
25
• FGD gypsum is a soluble source of 
Calcium and Sulfur for plant uptake 
• Improves soil physical properties for 
increased crop 
yields 
• Increases soil permeability 
and water 
infiltration reducing erosion and lower silt 
loadings 
in field runoff 
• Source of Ca for rehabilitation of high Mg, 
AI or Na soils 
26 
• Lower cost gypsum alternative for region's 
agricultural producers 
• Lower fuel usage and emissions with shorter 
haul distance for "locally produced" 
commodity 
• Reduced mining and associated impacts 
elsewhere 
• 
Preserves mined gypsum supplies for use by 
future generations  
27                                             
C
• Functional equivalent of other agricultural 
chemicals 
• Safe as land applied biosolids 
• Gypsum widely marketed and used 
throughout Midwest 
• Already approved for another FGD 
gypsum source in Illinois 
28 
•  Beneficial Use Determination that 
FGD 
gypsum is Coal Combustion By-
product 
•  Conditional approval for use of We-Energies gypsum in Illinois agriculture 
•  Allow marketplace to determine acceptance by agricultural community as it has 
with mined gypsum 
•  Distribute through channel partner(s) 
• Located and registered in Illinois 
• Provides agronomy expertise for appropriate application 
•  Conform with applicable elements of Title 35 Part 391 
• Consistent with Part 391.101 (c): "These criteria apply to projects for the land 
application 
of sludge that has been determined to be non-hazardous and non-toxic." 
• Part 391.204 Public Distribution Program 
•  We Energies remains responsible party 
•  Extension of established WI program 
•  Annual reporting 
• Part 391 Subpart C: Transportation and Storage 
• 
Part 391 Subpart D: Sludge Application Design Criteria 
29 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
EXHIBIT C 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Paulson.Robert 
From:                 
Paulson. Robert 
Sent:                  
Monday, April 06, 2009 9:00 AM 
To: 
Cc: 
'al.keller@illinois.gov'; 'darin.lecrone@illinois.gov'; 'jeff.hutton@illinois.gov' 
Ramme.Bruce 
Subject:               
We Energies Gypsum Notification Sheet 
Attachments:           
DATCP Permit to Distribute.pdf 
Hello AI, 
To follow up on the open item from our meeting last Wednesday, attached is the WI DATCP permit that also includes the 
WE Gypsum information sheet. This information sheet accompanies each load of gypsum use in Wisconsin agriculture. 
I also 
had a chance to look into the issue you brought up about the Pollution Control Facility. Interesting powers that are 
given to what 
I can only imagine is a very diverse set of agendas. One thing that I did not pay attention to before was the 
definition 
of a Pollution Control Facility in Section 3.330. As I read S.3.330(a)(8) and it's subsequent reference to 
S.21(r)(2) and (3) it seems that 
coal combustion wastes can be excluded from the Pollution Control Facility definition if 
they are permitted under any 
Illinois rule or regulation, say under a state operating permit or experimental permit, with 
conditions. 
Again, Bruce and 
I would like to thank you and your staff for taking the time to meet with us and consider our application to 
use our FGD gypsum 
in Illinois agriculture. If there is any clarification of the material we presented or additional material 
that would assist your review, do not hesitate to contact me directly. We look forward to hearing of the resolution of your 
internal discussions and a positive response to our application. 
Best Regards, 
Bob 
Robert Paulson 
Senior Environmental Consultant 
We Energies 
333 
Everett Street 
Milwaukee, WI 53203 USA 
email: 
robert.paulson@we-energies.com 
phone: (414) 221-3948 
cell: (920) 420-3464 
DATCP Permit to 
Distribute.pdf ... 
1
. ", 
State of Wisconsin 
Jim Doyle, Governor 
Department of Agriculture, Trade and Consumer Protection 
Rod Nilsestuen. Secretary 
Division 
of Agricultural Resource Management 
Permit to Distribute Soil-and-Plant Additive Product 
Section 94.65 (3), Wisconsin Statutes 
This certifies that: 
Wisconsin Electric 
Power Co 
dba We Energies 
.231 W Michigan 
8t 
Milwaukee                 
" WI     
53203 
Wisconsin Soil-and-Plant Additive License Number: 65 '017311 
is hereby issued a permit to distribute the following soil-and-plant additive in Wisconsin, 
in accordance with section 94.65. Wisconsin Statutes: 
We Energies Gypsum 
(pennitted label attached) 
This permit is "non-transferable and remains in effect until substantial changes are 
made in the product formulation, label or advertising literature: 
1) The active ingredients; 
2) The recommended amount 
or frequency of the product; and 
3) Any performance. use 
or efficacy claims which exceeds the approved label and 
promotional materials. 
Charlene Khazae, Fertilizer Program Manager 
Agricultural Resource Management Division 
(608) 224-4541 
Issue Date:    
5/5/2008 
Soil-and-Plant Additive Permit #: 017311 -  329 
Agriculture generales 
$51. 5 
billion for Wisconsin 
2811 Agriculture Drive • PO Box 8911 • Madison, WI 53708-8911 • 608-224-5012 • Wisconsin.gov 
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Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
Material Description: 
We Energies 
Gypsum 
We Energies Gypsum is a high purity gypsum material derived from a flue gas 
desulfurization (FGD) process installed at the Pleasant Prairie Power Plant. . It is 
available as a bulk 
pow.der material with a light tan color and typical moisture 
levels between 
3% and 20%. 
Act.ive Ingredient:           
. . 
Calcium Sulfate Dihydrate (CaS04. 2H
2
0) ...... 90% (minimum) 
Inert Ingredients: 
Calcium Sulfite Hemihydrate ................ 5% (maximum) 
Calcium 
Car~onate 
............................ 5% (maximum) 
i. 
Information regarding the levels of trace metals in We Energies Gypsum is available from We 
I Energies 
(414-221-4274) 
Location:  
We Energies Gypsum is produced at: 
Pleasant Prairie Power Plant: 
8000 95
th 
Street 
Pleasant Prairie, 
WI 53158 
Transportation: 
We Energies Gypsum is typically loaded into open top, end dump trailers for:. 
transportation to end use locations. Trailers must have locking tailgates and 
cover tarps to prevent dust and spills during transport. 
Net Weight:. ______ (Shipment weight will depend on trailer capacity) ... 
Typical Use: 
Research has shown that when applied at proper rates, gypsum functions as a 
soil additive to ... 
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loosen heavy clay soils 
•     
promote water infiltration, drainage and aeration 
,.       
prevent surface crusting                                
. ' 
•     
reduce runoff and erosion 
Application Rates: 
Apply We Energies Gypsum at rates recommended by local county extension 
agents and agricultural specialists.               
. 
We Energies makes no guarantee as to the performance of We Energies 
Gypsum when used as a soil additive and recommends consulting agricultural 
. 
specialists prior to use. 
:   
' .. 
Manufacturer and permit holder: 
We Energies 
333 W. Everett 
St 
Milwaukee, WI 53203 
414-221-4274 
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MAY  5 2008 
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By 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
EXHIBIT D
I LUNO'S ENVIRONMENTAL PROTECTION AGENCY 
1021 NORTH GRAND AVENUE EAST, 
P.O~   
Box 19276, SPRINGFIELD, ILLINOIS 62794-9276 - (217) 782-2829 
JAMES R. THOMPSON CENTER, 100Vv'[51 RANDOLPH, SUITE 11-300, CHICAGO, IL 60601 - (312) 814.6026 
217/524-3300 
June 30; 2009 
We Energies 
Mr; Robert Paulson, P.E. 
231 W. Michigan Street 
Milwaukee, Wisconsin 
53202 
Re:   
9550795178 -- Wisconsin 
We Energies 
Date. Application Received: June 24, 
2009 
We Energies Beneficial Use Determination 
Log No. 
2009-331 
Permit File 
Permit Denial 
Dear Mr. Paulson: 
DOUGLAS P. SCOTT, DIRECTOR 
C ertifi..ed Mail 
7008 1140 0.004 7344 4993 
The Illinois EPA has reviewed your request for a beneficial use detennination to use a coal 
combustion by-product (CCB). Specifically, We Energies has requested a determination that 
their flue gas desulfization (FGD) material resulting 
ii-om the coal fired boilers at the Pleasant 
Prairie Power Plant (P4) and Oak Creek Power Plant (OCPP) be approved as a .substitute for 
gypsum for various agticultural purposes. The Illinois EPA has evaluated your application for a 
beneficial use determination to use a coal combustion by-product 
in accordance with 3.135(b). 
Your request for a beneficial use determination has been denied. You have not provided proof 
that the 
FGDwill be used beneficiallyahdnot cause, thtealen ot allow the discharge of 
contaminates into the enviromnent and that the use will otherwise protect human health and 
safety and the environment. In accordance with Section 
3. 135(b) of the Illinois Environmental 
Protection Act, the Agency is required 
to provide reasons for denial. The applicant has failed to 
demonstrate that the activity would not result in a violation of Sections 9(a), 12(a) or 21(a) ofthe 
Act because the following infonl1ati'on was not provided: 
1.    
A description 
of the intermediate storage and processing of the CCB. Methods for 
storage and management 
of the FGD once it leaves P4 or OCPP have not been described. 
Procedures should have been sufficient to insure that the FGD is managed to prevent 
excessive loss 
of the material and the FGD does not generate pollution through dust, 
runoff or migration to groundwater; 
2.    
A discussion 
of the site-specific geology and the potential for constituents ofthe CCB to 
migrate to groundwater; 
ROCKfORO - 
4302 
Nortl~Mi\in 
Street, RO(;kiord,lt61103 - (815) 987.7760  
•  
DES PtAI:-!ES - 9511 
W. 
Harrison 51., Des Plaines,lL 60016 _ (847)294.4000 
ELGIN - 59:> South 
S~ale,   
Elgin, It 60123 - (847) 608.3131  
•  
PfORIA - 54'15 N, University St., Peoria, IL 61614 
~ 
(309) 693-5463 
BUREAU OF lM".O: PEORIA - 
7620 
N. 
Ul1Iversity St:, Peoria, IL 61614 -(309) 693-5462  
•  
CH-\MP,-\IGN - 2125 South First Street Champaign; IL 61820 - (217) 278.5800 
COlLINSVillE - 2009 Ivtlll Slreel, Collmsville, IL 62234 - (618) 346-5120  
•  
M.~RION   
- 2309 
\N. 
,\.1ain St, Suite 116, Marion, It 62959 - (618) 993.7200 
PRINTf[) ON RECYCLfO PAPER
Page 2 
3.    
Volumes and tlmeframes for use of the CCB to demonstrate that 
it 
is hot used in 
excessive amounts; and 
4.    
Justification that the CCB is used beneficially. 
InformaHon provided by the applicant and 
from other sources indicates that gypsum is not suitable forallsoi1 types,soil conditions 
or crops. The application did not include procedures to insure that the FDG will only he 
used on agricultural land in appropriate volumes where soil types; soil conditions and 
crops will benefit fi.om the application of the FGD. 
Within 35 days after the date 
of mailing of the Illinois EPA's final decision, the applic.ant may 
petition 
for.a hearing before the Illinois Pollution Control Board to contest the decision of the 
Illinois 
EPA, however, the 35-day period for petitioning for a hearing may be extended for a 
period 
of time not to exceed 90 days by written notice provided to the Board from the applicant 
and the Illinois EPA within the 35-day initial appeal period. 
Work required by this pennit, your application 
or the regulations may also be subject to other 
laws govemillg professional services, such as the Illinois Professional Land Surveyor Act of 
1989, the Professional Engineering Practice Act of 1989, the Professional Geologist Licensing 
Act, and the Structural Engineering Licensing Act of 1989. This pennit does not relieve anyone 
from compliance with these laws and the regulations adopted pursuant to these laws. All work 
that fal1s within the scope and definitions of these laws must be perfonned in compliance with 
Ulem. The Illinois EPA may refer any discovered violation of these laws to the appropriate 
regulating authority. 
Any resubmission should be a complete application without referencing previous submissions. 
Any questions or requests for assistance may be directed to Mark Schollenberger, 
P.E., at 
217/524-33.07. 
-~~ 
Stephen F. Nightingale, P.E. 
Manager, Permit 
Section 
Bureau 
of Land 
SFN:M~:bjh\091852s.doc 
Electronic Filing - Received, Clerk's Office, July 30, 2009 
* * * * * PCB 2010-011 * * * * *
BEFORE THE ILLINOIS POLLUTION CONTROL BOARD 
Wisconsin Electric Power Company, 
d/b/a We Energies, 
Petitioner, 
v. 
ILLINOIS ENVIRONMENTAL 
PROTECTION AGENCY, 
Respondent. 
) 
) 
) 
) 
) 
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) 
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PCB 
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(Appeal- Beneficial Use 
Determination) 
APPEARANCE 
OF CYNTHIA A. FAUR 
The undersigned, as one of its attorneys, hereby enters an Appearance on behalf of 
Wisconsin Electric Power Company (d/b/a! We Energies). 
Dated: July 
30, 2009 
Cynthia 
A. 
Faur 
Quarles 
& 
Brady LLP 
300 North LaSalle Street 
Suite 4000 
Chicago, Illinois 60654-3422 
(312) 715-5000 
QB\8407938.2 
Respectfully submitted, 
WISCONSIN ELECTRIC POWER COMPANY