# Sampling Episode Report

We Energies’

Pleasant Prairie Power Plant

Pleasant Prairie, WI

Sampling Episode 6559

Prepared for:



# U.S. Environmental Protection Agency

Engineering and Analysis Division

Office of Water

1200 Pennsylvania Avenue, NW

Washington, D.C. 20460

Prepared by:



# Eastern Research Group, Inc.

14555 Avion Parkway

Suite 200

Chantilly, VA 20151

13 December 2011

EPA Contract No. 68-C-02-095

Work Assignment 9-29

# i CONTENTS

Page

1. I NTRODUCTION 

# ................................................................................................................. 1-1

1.1 Background of Detailed Study ............................................................................. 1-1

1.2 Power Plant Site Selection ................................................................................... 1-1

1.3 Sampling Episode Overview................................................................................ 1-2

2. F ACILITY 

# O VERVIEW 

# ........................................................................................................ 2-1

2.1 FGD Scrubber System ......................................................................................... 2-2

2.2 FGD Wastewater Trea tment System ................................................................... 2-3

2.2.1 Physical/Chemical Separation ................................................................. 2-3

2.2.2 Sampling Points ....................................................................................... 2-5

3. S AMPLE 

# C OLLECTION 

# ....................................................................................................... 3-1

3.1 Sampling Points, Sample Collection Me thods, and Field Measurements ........... 3-1

3.1.1 Influent to FGD Wastewater Treatment System ...................................... 3-2

3.1.2 Effluent from FGD Wast ewater Treatment ............................................. 3-4

3.2 List of Analytes and Sample Preservation ........................................................... 3-7

3.3 Plant Operational Data ......................................................................................... 3-8

3.4 Deviations from the Sampling and Analysis Plan ............................................... 3-8

4. L ABORATORY 

# A NALYTICAL 

# R ESULTS AND 

# D ISCUSSION 

# ................................................... 4-1

5. D ATA 

# Q UALITY 

# ................................................................................................................. 5-1

5.1 Analytical Quality Control ................................................................................... 5-1

5.2 Field Quality Control ........................................................................................... 5-1

5.2.1 Bottle Blanks ............................................................................................ 5-1

5.2.2 Equipment Blanks .................................................................................... 5-2

5.2.3 Field Blanks ............................................................................................. 5-2

5.2.4 Field Duplicates ....................................................................................... 5-4

6. R EFERENCES 

# ..................................................................................................................... 6-1

Appendix A: A NALYTICAL 

# R ESULTS



# Appendix B: D ATA 

# R EVIEW 

# N ARRATIVES



# Appendix C: P ICTURES 

# F ROM THE 

# S AMPLING 

# E PISODE

# ii LIST OF TABLES

Page

Table 3-1. Sample Collection Info rmation, Pleasant Prairie ....................................................... 3-9

Table 3-2. Sample Collection at Pleasant Prairie ....................................................................... 3-11

Table 3-3. Field Measurements, Pleasant Prairie ....................................................................... 3-12

Table 3-4. Crosswalk of Sample Number to Sampling Point and Day, Pleasant Prairie .......... 3-14

Table 3-5. Analytical Met hods, Pleasant Prairie ....................................................................... 3-15

Table 3-6. Summary of Sample Container and Planned Preservation, Pl easant Prairie ............ 3-16

Table 3-7. Sample Preservation Summary, Pleasant Prairie ...................................................... 3-17

Table 3-8. Generating Unit Operating Character istics during Sample Collection, Pleasant

Prairie ....................................................................................................................... ...... 3-19

Table 3-9. FGD Scrubber System Operating Characteristics, Pleasant Prairie ......................... 3-20

Table 3-10. Coal Usage during Sample Collection, Pleasant Prairie ........................................ 3-21

Table 3-11. Scrubber Slurry Information duri ng Sample Collection, Pleasant Prairie ............. 3-21

Table 3-12. FGD Wastewater Trea tment System Operation Information, Pleasant Prairie ...... 3-22

Table 4-1. Influent to F GD Wastewater Treatment Syst em, Pleasant Prairie ............................ 4-3

Table 4-2. Effluent From FGD Wastewater Treatment Sy stem, Pleasant Prairie ...................... 4-6

Table 4-3. Classical Polluta nts 4-Day Average Data Summary for FGD Wastewater

Treatment System, Pleasant Prairie ................................................................................. 4-9

Table 4-4. Metal Pollutants 4-Day Aver age Data Summary fo r FGD Wastewater

Treatment System, Pleasant Prairie ............................................................................... 4-10

Table 5-1. Field Blank Analytical Results, Pleasant Prairie ....................................................... 5-5

Table 5-2. Field Duplicate Re sults – Effluent fr om FGD Wastewater Treatment System,

Pleasant Prairie .............................................................................................................. ... 5-6

Table A-1. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results,

Pleasant Prairie .............................................................................................................. .. A-1

Table A-2. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results,

Pleasant Prairie .............................................................................................................. .. A-4

# LIST OF TABLES (Continued)

Page

iii Table A-3. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results,

Pleasant Prairie .............................................................................................................. .. A-7

Table A-4. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results,

Pleasant Prairie .............................................................................................................. A-10

Table A-5. Effluent from FG D Wastewater Treatment System, Day 1 Analytical Results,

Pleasant Prairie .............................................................................................................. A-13

Table A-6. Effluent from FG D Wastewater Treatment System, Day 2 Analytical Results,

Pleasant Prairie .............................................................................................................. A-16

Table A-7. Effluent from FG D Wastewater Treatment System , Day 3 Analytical Results,

Pleasant Prairie .............................................................................................................. A-19

Table A-8. Effluent from FG D Wastewater Treatment System, Day 4 Analytical Results,

Pleasant Prairie .............................................................................................................. A-22

Table A-9. Duplicate of Effl uent from FGD Wastewater Tr eatment System, Analytical

Results, Pleasant Prairie ................................................................................................ A-25

Table A-10. Bottle Blank and Equipment Blank Analytical Data, Plea sant Prairie ................. A-28

Table A-11. Influent to FGD Wastewater Treatment System Field Blank, Day 1

Analytical Results, Pleasant Prairie .............................................................................. A-33

Table A-12. Effluent from FGD Wastewater Treatment System Field Blank, Day 1

Analytical Results, Pleasant Prairie .............................................................................. A-35

Table A-13. Effluent from FGD Wastewater Treatment System Field Blank, Day 2

Analytical Results, Pleasant Prairie .............................................................................. A-37

Table A-14. Effluent from FGD Wastewater Treatment System Field Blank, Day 3

Analytical Results, Pleasant Prairie .............................................................................. A-38

Table A-15. Effluent from FGD Wastewater Treatment System Field Blank, Day 4

Analytical Results, Pleasant Prairie .............................................................................. A-39

# iv LIST OF FIGURES

Page

Figure 2.1. FGD Wastewater Treatment Syst em, Pleasant Prairie Power Plant .......................... 2-6

Figure C-1. Sampler Working Inside a “Cleanbox” ....................................................................C-1

Figure C-2. Sample Tap and Tubing at the In fluent to the FGD Wastewater Treatment

System ........................................................................................................................ ......C-2

Figure C-3. Sample Collection Set- Up at the Pump-Off Station .................................................C-3

Figure C-4. Sample Tap and Tubing at the Effl uent from the FGD Wa stewater Treatment

System ........................................................................................................................ ......C-4

# 1-1 1. I NTRODUCTION



# The Engineering and Analysis Division (EAD) of the U.S. Environmental Protection

Agency (EPA) is conducting a sampling program at steam electric power plants. The sampling

program will characterize raw wastewaters generate d by coal-fired steam electric power plants

and evaluate treatment technologi es and best management practic es used to reduce pollutant

discharges. This Sampling Episode Report (SER ) describes the sampling activities that took

place June 20 - 25, 2010, at We Energies’ Pleasant Pr airie Power Plant (Pleasant Prairie), located

in Pleasant Prairie, Wisconsin (Sampling Ep isode 6559). The focus of Episode 6559 was to

characterize the purge stream entering the flue gas desulfurization (FGD) wastewater treatment

system and the effluent from the chemical precipitation system.

1.1 Background of Detailed Study

During EPA’s recently completed detailed study of the steam electric industry, EPA

identified metals and certain other constituents pr esent in the wastewater discharges from steam

electric power plants that substantially cont ribute to the toxic load ings for the industry.

Additionally, EPA determined that one of the wa ste streams contributing most of these toxic

loadings are associated with wet flue gas desu lfurization (FGD) systems present at coal-fired

power plants. Based on these findings, EPA ha s focused the sampling program on characterizing

the untreated FGD wastewaters a nd effluent quality from tec hnologies designed to treat the

wastewater.

1.2 Power Plant Site Selection

EPA selected steam electric plants for F GD wastewater sampling based on the process

configurations and characte ristics of the plants.

Pleasant Prairie was selected by EPA for sampling based on the following site

characteristics:

 The plant is a coal-fired pow er plant that burns Powder River Basin (PRB) coal in

each of its two generating units;

 The plant operates limestone forced oxidation wet FGD systems on both units;

 The plant operates a segregated FGD wastewater treatment system, which

includes the following steps:

— 

# Equalization,

— 

# pH adjustment (lime addition),

— 

# Primary clarification,

— 

# Organosulfide addition,

— 

# Ferric chloride addition,

— 

# Polymer addition,

— 

# Secondary clarification;

# 1-2  The plant operates selective catalytic reduction (SCR) systems on both generating

units; and

 The plant produces a commerc ial-grade gypsum by-product.

1.3 Sampling Episode Overview

EPA and its technical contractor, Eastern Research Group, Inc. (ERG), conducted a oneday pre-sampling site visit at Pleasant Prairie on March 2, 2010 as part of the rulemaking. The

information collected during the pre-sa mpling site visit was used to create Sampling Plan, We

Energies’ Pleasant Prairie Power Station (Sampling Plan) [1], which describes the sample

collection procedures used during the sampling episode.

On Sunday, June 20, 2010, EPA arrived at Pleasant Prairie to meet with plant personnel,

receive on-site safety training, review the sa mpling points, and determine the set-up for the

sample collection. EPA and ERG collected the samples specified in the Sampling Plan on

Monday through Friday (June 21 – 25, 2010). The following personnel participated in EPA’s

sample collection activities:

 Ron Jordan, EPA/EAD;

 TJ Finseth, ERG;

 Kavya Kasturi, ERG;

 Elizabeth Sabol, ERG;

 Becky Schwantes, ERG; and

 Kim Wagoner, ERG.

In addition, during the sample collection, EPA collected split sample s with the Utility

Water Act Group (UWAG). UWAG is a trade asso ciation for the electric power generating

industry. During the sampling epis ode, UWAG acted as Pleasant Prairie’s representative and

collected samples on be half of the plant.

# 2-1 2. F ACILITY 

# O VERVIEW



# Pleasant Prairie operates two steam electric generating units and each has a coal-fired

boiler. Units 1 and 2 each have a capacity of 594 megawatts (MW), and came online in 1980 and

1985, respectively. The plant is located in Pleasant Prairie, Wisconsin, about 5 miles from Lake

Michigan.

Pleasant Prairie burns approximately 5.5 million tons of PRB coal each year. The plant

also burns bottom and fly ash from older power pl ants to reclaim some of the carbon in the ash.

The old ash is burned at approxi mately one to two percent wei ght of the total fuel burned.

Approximately three years prior to the sampling episode, Pleasant Prairie retrofitted both

units with FGD scrubber systems to control the sulfur dioxide (SO 2 

# ) releases from the plant. The

Unit 1 FGD system was installed in November 20 06, and the Unit 2 FGD system was installed in

March 2007. The wet FGD scrubbers remove approximately 97 to 98 percent of the SO 2 

# from

the flue gas. In addition to the FGD scrubbe r systems, Pleasant Prai rie installed an FGD

wastewater treatment system to control the disc harges of the wastewat er generated during the

operation of the FGD scrubbers. Sections 2.1 a nd 2.2 further discuss the FGD scrubber systems

and the FGD wastewater treatment system, respectively.

Pleasant Prairie retrofit ted Units 1 and 2 with SCR systems in 2006 and 2003,

respectively. The plant operates the SCR systems, which are used to control nitrogen oxide

(NO X 

# ) emissions, year round.

The electrostatic precipitators (ESPs) at Plea sant Prairie are particulate control devices

that are designed to remove 99.7 percent of the fly ash and other particulates from the flue gas.

Pleasant Prairie utilizes ESPs to remove the fly ash from both units. The fly ash and other

particulates are collected in hoppers and pneumatically conveyed to storage silos. Pleasant

Prairie markets the fly ash produced. There is no wa stewater discharge associated with the ESPs.

Pleasant Prairie installed a calcium bromid e injection system in November 2009 and

began continuous calcium bromide injection in January 2010. The system injects a solution of

calcium bromide on to the coal prior to it being pulverized. Adding the calcium bromide to the

coal enhances the oxidation of the mercury in the boiler and, therefore, results in better removals

of mercury in the downstream FGD system. Since the addition of the injection system, Pleasant

Prairie has noticed an increase in the mercury c oncentrations present in the gypsum, as well as

the sludge generated from the FGD wastewater treatment system.

Units 1 and 2 each have the following configuration:

 Boiler;

 SCR system;

 ESP; and

 FGD scrubber system.

# 2-2 2.1 FGD Scrubber System

Pleasant Prairie operates two identical wet F GD scrubber systems that treat the flue gas

from Units 1 and 2. The plant uses limestone slurry as the sorbent for SO 2 

# absorption. Limestone

and service water are fed to on-site ball mills, wh ich pulverize the limestone to create the slurry.

From the ball mills, the slurry is transferred to hydrocyclones to collect limestone particles that

are too large to use in the FGD scrubber sy stem. The underflow from the hydrocyclones is

returned to the ball mill for additional processi ng. The overflow from the hydrocyclones, which

is approximately 40 to 50 percent solids (by weight), is transferre d to a limestone slurry storage

tank and used as fresh limestone slurry in the absorber.

The fresh limestone slurry is fed to the r eaction tank of the FGD scrubber system and the

recycle pumps send the slurry to the various le vels of the FGD scrubbe r (typically two of the

three spray levels are operating at one time). Th e slurry is pressurized and sprayed downward

into the scrubber vessel through the spray nozzles. As the slurry falls downward and the flue gas

flows countercurrent to the slurry, the spray droplets of the limestone slurry contact the flue gas

and absorb the SO 2 

# , which reacts with the limestone particles and produces calcium sulfite. The

spray droplets flow downward until they reach th e dual flow tray, which forms a layer of slurry

that the flue gas must pass thr ough to exit the FGD scrubber system . The tray has small holes in

it that allow the flue gas to bubble through the limestone slurry layered on the tray, which

provides additional contact between the limestone slurry and the flue gas. The spray droplets

continue to flow downward in the scrubber until they reach the reaction tank. Pleasant Prairie

bubbles air through the reaction tank to oxidize th e calcium sulfite to calcium sulfate (i.e.,

gypsum).

The SO 2 

# removal in the FGD systems is optimized at a pH of 5.9; however the plant

operates the FGD systems at a pH of 5.6 to 5.7 to reduce the scaling poten tial in the system. The

limestone slurry feed rate is ad justed to maintain the pH in th e system at 5.6 to 5.7. In addition,

the plant operates the FGD systems to maintain a solids concentration in th e scrubber of 15 to 18

percent solids. When the solids concentration ex ceeds 18 percent, the plant blows down from the

FGD system. The blowdown from each FGD system lasts for about eight to ten hours each day

and is transferred to the gypsum dewatering ope rations. The plant staggers the blowdown from

the two units.

Pleasant Prairie also maintains the chloride concentration in the FGD scrubber systems

between 3,000 and 10,000 ppm. The maximum desi gn chlorides concentr ation is 15,000 ppm,

but the plant tries to keep the ch lorides concentration around 6,000 ppm.

The gypsum slurry for each scrubber is pum ped to its primary hydrocyclone, where the

solid gypsum is separated from the water by cen trifugal force. The solid gypsum is forced

outward to the walls of the hydrocyclones and fa lls downward, while the wa ter exits the top of

the hydrocyclones. The gypsum from the primar y hydrocyclones, which is approximately 50

percent solids, is transferred to the vacuum belt filters for fina l dewatering. The overflow from

both the Unit 1 and Unit 2 primary hydrocyc lones are commingled in the secondary

hydrocyclone feed tank and transferred to a common secondary hydrocyclone. The overflow

from the secondary hydrocyclone is transferre d to the FGD wastewater treatment system.

# 2-3 Pleasant Prairie washes the gypsum sent to the vacuum filter belts with service water, as

the gypsum slurry is poured onto the belts. The v acuum filter belts dry the gypsum to a moisture

content less than 10 percent. Pleasant Prairie sells the gypsum for use in wallboard

manufacturing or for agricultural purposes. Pleasant Prairie generates approximately 45,000

pounds of gypsum per hour, when th e plant is dewatering the gypsum.

The filtrate from the vacuum belt filters is collected and transferred back to the FGD

scrubber systems. Typically, the filtrate is tran sferred back to the Unit 1 FGD scrubber system;

however, the plant has the capability to send the filtrate to the Unit 2 FGD scrubber system.

2.2 FGD Wastewater Treatment System

The Pleasant Prairie FGD wastewater treatment system is designed to receive intermittent

transfers of wastewater from the FGD scr ubber system, which consists of secondary

hydrocyclone overflow, at a flow rate of a pproximately 40 gallons per minute (gpm). The

intermittent transfers typically o ccur twice per day. According to plant personnel, the secondary

hydrocyclone typically operates for ten hours and is then off for six hours and then operates for

ten hours again. The FGD wastewater treatment syst em is a chemical precipitation system and

contains the following treatment operations:

 Equalization tank;

 pH adjustment (lime addition);

 Primary clarification and polymer addition;

 Organosulfide and hydrochl oric acid addition;

 Ferric chloride addition;

 Mixing tank (with polymer addition);

 Flocculation tank;

 Secondary clarification; and

 pH adjustment (hydrochloric acid addition).

Figure 2-1, located at the end of this secti on, presents the process flow diagram of the

FGD wastewater treatment syst em, as well as the sampling locations for EPA’s sampling

episode. Pleasant Prairie estimates that the tota l residence time of the FGD wastewater treatment

system is approximately 55 hours.

The secondary hydrocyclone overflow from the scrubbers is transferred directly to the

equalization tank at the start of the wastewater treatment system. During the sampling episode,

the FGD influent wastewater was found to cont ain 0.3 to 0.7 percent solids, had a pH between

5.8 and 6.8 S.U., and a temperature between 54 a nd 55 °C. The equalization tank also receives

water from the filtrate sump, which includes the f iltrate from the treatment system sludge filter

presses.

2.2.1 Physical/Chemical Separation

From the equalization tank, the wastewater en ters reaction tank 1, where hydrated lime is

added to raise the pH of the wastewater from 5.6 to 8.5 S.U. to precipitate the soluble metals as

insoluble hydroxides and oxyhydroxides. The reacti on tank also desaturates the gypsum in the

# 2-4 wastewater, which prevents gypsum scale forma tion in the downstream wastewater treatment

equipment. To desaturate the gypsum, some of the sludge from the downstream primary clarifier

is recycled back to reacti on tank 1 to provide seed crys tals for gypsum nucleation.

From reaction tank 1, the wastewater flows to the primary clarifier, where polymer is

added to aid in the settling of the solids. Pleasant Prairie stated that 96 per cent of the solids settle

out of the wastewater in the pr imary clarifier. The overflow from the primary clarifier flows to

reaction tank 2, where the plant adds organosulfi de and hydrochloric acid. When the plant first

began operating the treatment system , they used TMT 15® as the or ganosulfide. Since that time,

the plant has switched to using Nalmet 1689®, wh ich is an organosulfide that has a longer

polymer chain, and therefore, a higher molecula r weight, which helps aid in the settling of

precipitates. Pleasant Prairie also began adding hydrochloric acid to r eaction tank 2, which was

not in the initial design of the system, because the plant determined that they achieve better

removals of mercury when the syst em is operated at a lower pH.

From reaction tank 2, the wastewater flows to reaction tank 3, where ferric chloride is

added to the wastewater. The pH in reaction tank 3 is targeted at 7.0 to 7.2 S.U. The effluent

from reaction tank 3 flows to the flash mix ta nk, where polymer is added to the wastewater.

From the flash mix tank, the wastewater flows to the flocculation tank. Gentle mixing in the

flocculation tank allows de nser floc to form.

The wastewater from the flocculation tank flows to the secondary clarifier. The

secondary clarifier settle s the solids that were formed duri ng the chemical conditioning steps.

Pleasant Prairie operates an inclined-plate lamella separator type clarifier. Hydrochloric acid may

be added to the overflow from the secondary clarifie r to readjust the pH valu e, if needed, to meet

effluent limits. From the secondary clarifier, water flows to the effluent tank and is then

commingled with other waste st reams (e.g., cooling tower blowdow n) prior to discharging to

Lake Michigan. Pleasant Prairie commingles the effluent from the FGD wastewater treatment

plant with other plant wastewater to meet the fi nal outfall mercury and chloride limits. To meet

the effluent mercury limit, Pleasa nt Prairie must dilute the F GD wastewater at a 30:1 ratio.

Because Pleasant Prairie does not discharge cooling tower blowdown when the plant is

chlorinating the cooling system, the plant co ntinuously operated the effluent pumps and

transferred the flow to the filtrate sump so that ERG could collect the effluent sample for the

entire 24-hour period, even duri ng chlorination. Pleasant Prairie di rected the treated effluent

collected in the filtrate sump to the scrubber as make-up water so it would not impact the FGD

wastewater treatment system performance.

The sludge from the primary and secondary cl arifiers is transfe rred to sludge holding

tanks using sludge transfer pumps. A portion of the clarifier sludge is recycled from the sludge

holding tank to reaction tank 1, while the majority is pumped to a filter press for dewatering. The

solids are then stacked on-site prior to being transf erred to an off-site landfill. The filtrate is

transferred to the filtrate sump, the contents of which are recycled back to the equalization tank.

Pleasant Prairie typically operates the F GD wastewater treatment system Monday

through Saturday. The system is shut down Sunday to perform weekly cleaning and

maintenance. This weekly maintenance includes draining and flushing of the secondary clarifier

to avoid buildup from flocculati on. Pleasant Prairie pers onnel stated that the weekly maintenance

# 2-5 was performed on the Thursday prior to the EP A sampling episode (June 17, 2010) so the plant

could verify the system performance on Friday and have it available for the sampling episode on

Monday.

Pleasant Prairie has made the following modifi cations to the FGD wastewater treatment

system since the system first began operating in early 2007:

 Changed the type of organosulfide used in the system from TMT 15® to Nalmet®

1689 (described previously);

 Added a hydrochloric acid addition point to reaction tank 2 be cause the system

removes more mercury at a lower pH (described previously);

 Bypassed a set of sand filter s that were located after the secondary clarifiers

because of scaling issues (the sand filt ers are not shown in Figure 2-1); and

 Added the capability to use cartridge filtr ation to remove colloidal particles from

the wastewater after the sec ondary clarifier, which may build up in the system if

the plant recirculates the wastewater without discha rging for several weeks;

however the cartridge filtration is not used regularly (the cartridge filters are not

shown in Figure 2-1).

2.2.2 Sampling Points

Figure 2-1 shows the sampling points for the Pl easant Prairie sampling episode; they are

summarized below:

 

# A sample of the purge stream entering the FGD wastewater treatment system

downstream of the purge tank and upstr eam of the equalization tank (i.e., the

sample was collected prior to any chem ical addition or mixing with recycle

streams); and

 

# A sample of the effluent from the FGD wastewater treatment system downstream

of the two effluent tanks prior to commi ngling with other stre ams for discharge.

# 2-6Figure 2.1. FGD Wastewater Treatment System, Pleasant Prairie Power Plant

# 3-1 3. S AMPLE 

# C OLLECTION



# During the Pleasant Prairie sampling episode, the sampling team followed the collection

protocols specified in the Sa mpling Plan. Section 3.1 describes the sampling points, sample

collection methods, and field measurements. Secti on 3.2 describes the list of analytes and the

sample preservation procedures. Section 3.3 discu sses the plant operational data collected during

the sampling episode. Finally, Section 3.4 discusse s any deviations from the planned sampling

activities.

3.1 Sampling Points, Sample Collectio n Methods, and Field Measurements

This section describes the sampling point s, sample collection methods, and field

measurements. Additional details are available in Section 3 of the Sampling Plan. Figure 2-1 of

this report presents a flow diagram of the plant’s wastewater treatment system, including

sampling point locations.

Table 3-1 lists the sampling points, sampli ng point descriptions, type of sample

collection, and sample collection dates and times. Table 3-2 list s the sampling point numbers and

descriptions, the number of samples collected, and the pollutant parameters for which the

samples were analyzed. Table 3-3 presents th e field measurement data collected from each

sampling point. Table 3-4 presents a crosswalk be tween the sample numbers used for laboratory

sample identification and the sample points for each day.

The sampling points for this episode were:

 

# SP-1 Influent to FGD Wastewater Treatment System;

 

# SP-2 Effluent from FGD Wast ewater Treatment System;

 

# SP-3 Duplicate of Effluent from FGD Wastewater Treatment System (SP-2);

 

# SP-4 Influent to FGD Wastewater Treatme nt System (SP-1) Field Blank; and

 

# SP-5 Effluent from FGD Wa stewater Treatment System (SP-2) Field Blank.

For all the sampling points, EPA collected split samples with Pleasant Prairie’s

representative by inserting a “Y” splitter into the sample tubi ng configuration at each sampling

point to allow for split sample collection. EPA co llected all samples (other than mercury and

cyanide) at all sampling points as “true” splits (i.e., samples for the same analyte were collected

simultaneously). The mercury and cyanide samples were collected directly from a sample tap;

therefore, for these samples, EPA and Pleasan t Prairie’s representative collected duplicate

samples, with one filling the bot tle immediately after the other.

At each of the sampling points, EPA collected metals sample fractions following EPA

Method 1669 collection protocols. To collect these samples, EPA samplers donned Tyvek®

coveralls and dust masks (dust masks were worn until all mercury samples had been collected).

In addition, EPA set up a “cleanbox,” which consists of a portable plastic rectangular box with a

shallow lip and a flip-top lid th at secures itself ope n with clips. The “cleanbox” is double-bagged

with a clear inner bag, enclosed in a translu cent outer bag. The “cleanbo x” is handled using

“clean hands / dirty hands” techniques, where by the inner bag is ha ndled only by the “clean

hands” sampler. When the “cleanbox” is opened, the sampler is able to position his/her hands in

# 3-2 the box and pull the bag over the open ing of the box, but is still able to see the sample bottles and

tubing. The “cleanbox” minimizes potential at mospheric contamination during sample

collection. Figure C-1, in Appendix C, is a pictur e of a sampler working inside a “cleanbox.”

The metals sample bottles were also double-bagged. To collect the metals samples, EPA

placed the sample bottles (while still in its seal ed inner bag) into the “cleanbox” following the

protocols specified in Method 1669, also referred to as “clean hands / dirty hands” protocols.

Sampling staff filled the sample container, then cl osed the sample bottle lid and sealed the inner

bag as quickly as possible with in the “cleanbox.” The bagged sample bottles were then removed

from the “cleanbox” and placed into the outer bag following the “clean hands / dirty hands”

protocols.

3.1.1 Influent to FGD Wastewater Treatment System

The influent to FGD wastewater treatment syst em (SP-1) was collected from a sample tap

located on the secondary hydrocyclone and ups tream of the equalization tank. Figure 2-1

identifies the sampling location for SP-1. This sa mple was collected as a grab sample because,

according to plant representatives, the wastewater characteristics of the pu rge to the wastewater

treatment system are fairly consistent during th e purge. In addition, due to the relatively high

concentration of suspended solids, the FGD purge was not amenable to collecting representative

split samples using composite sampling techniques . The sample tap was located inside the FGD

building (see Figure 2-1 for the sampling locat ion for SP-1). Because the sampling point was

located inside, there were no wind or rain concerns during the sample collection.

On Day 1 only, prior to collecting the sample s at the influent to the FGD wastewater

treatment system (SP-1), the sampling team collected field blanks (SP-4) for total mercury, total

and dissolved metals, and dissolved hexavalent chromium. See Section 5 .2.3 for a description of

the field blank sample collection procedures at the influent to the FGD wastewater treatment

system.

To collect the wastewater samples at the influent to the FGD wastewater treatment

system, the samplers attached a 10-foot length of silicone tubing to the sample tap on the

wastewater piping. The end of th e silicone tubing was fitted w ith a “Y” splitter, with two

additional lengths of silicone tubi ng attached to the “Y” splitter. Figure C-2, in Appendix C, is a

picture of the tubing attached to the sample tap at the influent to the FGD wastewater treatment

system. The samplers attached the silicone tubi ng to the sample tap, opened the valve, and

allowed sample to flow through the tubing for two minutes before beginning to fill sample

containers. The samplers did not close the valv e until all samples were collected (except the

dissolved metals samples).

The samplers collected the following samples using a “cleanbox,” as described in Section

3.1:

 Total and dissolved mercury;

 Total metals by 200.8; and

 Total metals by 200.7.

# 3-3 Samplers then filled a 10-liter container with sample to be pumped off later for collection

of dissolved metals sample fractions. After all samples were collected at the sampling point for

the day, the filled 10-liter container was transported to the staging area, put on ice, and then left

untouched to allow the solids in the wastewater to settle.

The sampling team collected an aliquot of sample for field testing. Sample pH and

temperature were measured immediately at the sa mpling point using four-color pH paper, a pH

meter, and a thermometer. Table 3-3 presents the field measurement data for the influent to the

FGD wastewater treatment system.

The samplers then filled containe rs for biochemical oxygen demand (BOD 5 

# ), Group I,

Group II, and total cyanide samples directly fr om the tubing without using a “cleanbox.” See

Table 3-6 for a list of Group I and Group II analytes. BOD 5 

# , Group I, Group II, and total cyanide

samples were immediately placed on ice after sa mple collection.

The total cyanide sample was immediately preserved. Lead acetate test strips and

potassium-iodide starch test stri ps were used to measure for su lfides and oxidants, respectively.

No sulfides or oxidants were detected during th e sampling episode. The samplers then preserved

the total cyanide sample with sodium hydroxide to a pH >10 S.U. and placed it on ice.

Samples for the dissolved metals analyses we re pumped from the previously filled 10-

liter container. The pump-off station consisted of a length of Teflon® tubing attached to a length

of silicone tubing, which was threaded through an ISCO peristaltic pump. The sampling team

attached a capsule filter to th e silicone tubing, which was a s hort distance downstream of the

pump. They then attached another short length of silicone tubing to the capsule filter effluent,

which was attached to a “Y” spli tter and two lengths of silicone tubing. This set-up allowed EPA

to collect “true” split samples w ith Pleasant Prairie’s representati ves. Figure C-3, in Appendix C,

is a picture of the set-up at the pump-off station.

The sampling team placed the end of the Teflon® tubing into the 10-lit er container filled

with wastewater from the influent to the FGD wastewater treatment system. By this time, the

solids in the wastewater had b een settling for approximately 90 minutes. Approximately 0.5 - 1

liters 1 

# of sample were pumped through the tubing/filter to purge the line before collecting

samples.

Samplers collected the following dissolved sa mples using a “cleanbox,” as described in

Section 3.1:

 Dissolved metals by 200.8;

 Dissolved metals by 200.7; and

 Dissolved hexavalent chromium.

Hexavalent chromium samples were immedi ately placed on ice after sample collection.

1 On day 1, the filter/tubing was purged for 1.5 liters for the field blank and 0.5 liters for the remaining samples. On

days 2, 3, and 4, the filter/tubing was purged for 1 liter. There was no need to change the filters on any of the

sampling days.

# 3-4 3.1.2 Effluent from FGD Wastewater Treatment

The effluent from FGD wastew ater treatment system (SP-2) was collected downstream of

the two effluent tanks prior to the effluent co mmingling with other wastewaters for discharge.

Pleasant Prairie installed a three-way splitter on th e sample tap that had three separate taps to

collect samples from the sampling point. The samp le tap was located inside the FGD wastewater

treatment building (see Figure 2-1 for the samp ling location for SP-2). Because the sampling

point was located inside, there were no wind or rain concerns during the sample collection.

However, the sampling team did observe that the close proximity of the co al pile resulted in a

significant amount of coal dust settling around a nd inside the building during coal loading

operations. The rate of coal dust accumulation was such that visible amounts of dust would

collect in less than 10 minutes. To minimize the amount of dust entering open tanks in the

treatment system building, the building doors were generally kept close d. Nevertheless, it is

possible that some amount of coal dust settled in the treatment system tanks and the pollutants

present in the coal dust may have affected the m easured concentrations in the treatment system

effluent.

ERG collected the effluent from the FGD wastewater treatment system composite

samples using two automatic compositors which were programmed to collect individual sample

volumes into two 20-liter containers. The comp ositors were programmed to collect 830 mL

every hour during the 24-hour composite period. Following the composite period, ERG pumped

off the specific sample volumes into the individual sample containers.

ERG used one automatic compositor to collect sample volume for the metals analyses

(excluding mercury) and another automatic compos itor to collect sample volume for all classical

analytes (i.e., BOD 5 

# , Group I, and Group II, excluding cy anide). In addition to collecting

automatic composite samples for the analytes listed above, ERG collected total and dissolved

mercury grab samples every six hours during ea ch compositing period. ERG also collected one

grab sample for cyanide during each compositing period.

On day 1 only, ERG collected field blank samp les (SP-5) for hexavalent chromium, total

and dissolved metals by 200.7, and total and di ssolved metals by 200.8. See Section 5.2.3 for a

description of the field blank sample collection procedures at the effluent from the FGD

wastewater treatment system.

Samplers set up the compositors by attaching tw o T-splitter tubing sets to two of the taps

on the three-way splitter. The T-splitter tubing set consisted of three silicone tubes attached to a

T-splitter. The tubing configura tion was set up such that one e nd was connected to the sample

tap, one end was threaded through the automa tic compositor and connected to the large

composite container, and one end was placed next to a sump/drain near the sampling point. The

samplers attached the silicone tubing to the samp le tap, opened the valve, and allowed sample to

flow through both sets of tubing before calibrati ng either of the automatic compositors. This

ensured that the flow through the tubing during calibration would be the expected flow through

the tubing during sample collection. The automatic compositors were calibrated such that they

collected 830 mL every hour, so that the project ed complete volume would be 20 liters. After

calibration, the tubing was attached to a vented cap on a 20-liter composite container. The

sample tap was left open during the entire sample collection time period a nd flowed directly to

# 3-5 the sump/drain. The automatic compositor pulled sa mple from the flowing stream as dictated by

the sampling program and was capable of purging th e line back to the flowing stream between

each individual sample aliquot.

Both 20-liter composite containers were placed into plastic trash cans, and maintained on

ice for the entire 24-hour compositing period. A plas tic bag was placed on t op of the trash cans

to minimize contamination. Figure C-4, in Appendi x C, is a picture of the composite sampling

set-up at the effluent from the FGD wastewater treatment system.

Immediately after setting up the compositors, ERG collected the first set of the total and

dissolved mercury grab samples. At the first gr ab sample every day, ERG collected field blanks

for total mercury samples. See Section 5.2.3 for a de scription of the field blank sample collection

procedures at the effluent from the FGD wastewater treatment system.

For mercury collection, samplers shrouded one of the three taps on the three-way splitter

(the other two taps were being used by the two compositors) with a clean plastic bag by

puncturing a hole in the bottom of the bag with the end of the tap and then securing it to the tap

with a ziptie. After purging the ta p for two minutes, the samples were collected directly from the

tap into the sample bottles. Becau se total mercury and dissolved mercury samples were collected

directly from the tap, ERG was not able to collect split samples with Pleasant Prairie’s

representatives; therefor e, duplicate samples were collected. ERG collected another set of total

and dissolved mercury samples every six hours th ereafter over the 24-h our period. The plastic

shroud was replaced for each set of mercury grab samples. After collect ing each set of mercury

grabs, ERG filled a field test bottle and tested for pH and temperature using four-colored pH

paper, a pH meter, and a thermometer. Table 3- 3 presents the field measurement data for the

effluent from the FGD wastewater treatment.

After the collection of the thir d set of mercury grabs, ERG collected a total cyanide grab

sample from the same tap on the three-way splitt er that was used for mercury sample collection.

Because total cyanide samples were collected directly from the ta p, ERG was not able to collect

split samples with Pleasant Prairie’ s representatives; therefore, duplicate samples were collected.

The total cyanide sample was immediately preserved. Lead acetate test strips and potassiumiodide starch test strips were used to measure for sulfides and oxidants, respectively. No sulfides

or oxidants were detected during this sampling episode at the effl uent from the FGD wastewater

treatment system. ERG samplers then preserved the total cyanide samples with sodium

hydroxide to a pH >10 S.U. a nd placed the samples on ice.

After the twenty-fourth aliquots were coll ected in the two composite containers, ERG

followed “clean hands / dirty hands” sampling tec hniques to disassemble the compositors from

the sampling set up. Closed caps were placed on the two composite containers and the

composite containers were moved to the pump-off area where they remained on ice until

individual sample bottles were filled. The samplers then began setting up the compositors for the

next day of samples using new tubing sets and composite containers. The automatic compositor

was programmed to collect the same volum e on each day of sample collection.

After completing the set up for the next day of composite samples, the sampling team

transferred the wastewater coll ected in the 20-liter containe rs into the individual sample

# 3-6 containers at the pump-off area. For this samp ling point, ERG used a sample pump-off approach

to transfer the composite samples to the individual sample bottles. For this sample pump-off

procedure, the dissolved metals samples were collected before the total metals and classical

samples to prevent cross-contamination with in the tubing, which could lead to greater

concentrations in the dissolved metals fractions.

Samples for the dissolved and total metals analyses were pumped from one of the

previously filled 20-liter cont ainers. The pump-off station cons isted of a length of Teflon®

tubing attached to a length of silicone tubing, which was threaded throu gh an ISCO peristaltic

pump. The sampling team attached a capsule fi lter to the silicone t ubing, which was a short

distance downstream of the pump. They then attached another short length of silicone tubing to

the capsule filter effluent, which was attached to a “Y” splitter and two lengths of silicone

tubing. This set-up allowed EPA to collect “t rue” split samples with Pleasant Prairie’s

representatives. Figure C-3, in Appendix C, is a picture of the set-up at the pump-off station.

On Day 1 only, prior to collec ting any samples of the efflue nt from the FGD wastewater

treatment system, the samplers collected a fiel d blank sample (SP-5) for dissolved and total

metals. See Section 5.2.3 for a description of the dissolved and total metals field blank sample

collection at the effluent from the FGD wastewater treatment system.

After collecting the field blank samples, the sampling team placed the end of the Teflon®

tubing into one of the 20-liter composite containers filled with wastewater from the effluent from

the FGD wastewater treatment system. After the tubing and filter were purged with 1-2 liters of

sample, samplers collected the following sample s using a “cleanbox,” as described in Section

3.1:

 

# Dissolved metals by 200.8;

 

# Dissolved metals by 200.7; and

 

# Dissolved hexavalent chromium.

Hexavalent chromium samples were immedi ately placed on ice after sample collection.

After the dissolved metals had been collected, the filter was removed. Once the tubing was

purged with 1-2 liters of sample, samplers coll ected the following samples using a “cleanbox,” as

described in Section 3.1:

 

# Total metals by 200.8; and

 

# Total metals by 200.7.

After the metal samples had been collected, the sampling team placed the end of the

Teflon® tubing into the other prev iously filled 20-liter contai ner. After the tubing was purged

with 1-2 liters of sample, samplers fille d containers for biochemical oxygen demand (BOD 5 

# ),

Group I, and Group II samples directly from the tubing without using a “cleanbox.” See Table 3-

5 for a list of Group I and Group II analytes. BOD 5 

# , Group I, and Group II samples were

immediately placed on ice af ter sample collection.

For all analytes, ERG collected QC samples at the effluent from the FGD wastewater

treatment system (SP-2) on Day 3 of the samp ling episode. In addition, for all analytes, ERG

# 3-7 collected a duplicate sample of the FGD wastew ater treatment system (SP-3) on Day 2 of the

sampling episode.

3.2 List of Analytes and Sample Preservation

Samples collected at Pleasa nt Prairie were analyzed for the following pollutants:

 

# Classicals:

Biochemical oxygen demand, 5-day (BOD 5 

# ),

Chemical oxygen demand (COD),

Total suspended solids (TSS),

Total dissolved solids (TDS),

Sulfate,

Chloride,

Total Kjeldahl nitrogen (TKN),

Ammonia as nitrogen,

Nitrate/nitrite as nitrogen,

Total phosphorus,

Total cyanide;

 

# Total Metals:

— 

# Aluminum, antimony, arsenic, barium, beryllium, boron, cadmium,

calcium, chromium, cobalt, copper , iron, lead, magnesium, manganese,

mercury, molybdenum, nickel, selenium, silver, sodium, thallium, tin,

titanium, vanadium, and zinc.

 

# Dissolved Metals:

— 

# Same parameters as listed for total metals, plus hexavalent chromium.

The analytes selected reflect the current understanding of coal-fired power plant air

pollution control wastewaters, in cluding contributions from coal , scrubber sorb ents, treatment

chemicals, and other sources. Table 3-5 lists the analytical methods used to determine pollutant

concentrations.

Table 3-6 lists the containers used for sample collection as well as the preservation

requirements for each sample. Table 3-7 summarizes the chemical preservation for each of the

samples that were preserved on site. The sampli ng team preserved samples in accordance with

procedures described in Section 3.4 of the Sampling Plan. Immediately following sample

collection, the samplers placed the BOD 5 

# , Group I, Group II, dissolved hexavalent chromium,

and total cyanide samples on ice to cool the sa mples to <6°C. The sampling team did not place

the total and dissolved metals or the total and dissolved mercury samples on ice, which comports

with the requirements of Methods 200.7, 200.8 and 1631E. All dissolved metals samples, except

for mercury, were filtered in the field. The hexavalent chromium samples were preserved in the

field, but all other metals samples were acid-pre served prior to extraction at the laboratory. The

hexavalent chromium samples were preserve d with ammonium sulfate buffer solution and

ammonium hydroxide to a pH between 9.3 and 9.5 S.U. The Group II samples were preserved

with sulfuric acid to a pH of <2 S.U. in the staging area, and the pH was confirmed with four-

# 3-8 color pH strips. Each total cyanide sample was te sted for sulfides and oxidants immediately after

sample collection. Because sulfides and oxidants we re not detected at any of the sampling points

during the sampling episode, the samplers did not need to dilute the samples or add sodium

arsenite to the samples. After testing for sulf ides and oxidants, the total cyanide samples were

preserved with sodium hydroxide to a pH >10 S.U. and placed on ice.

3.3 Plant Operational Data

During the EPA sampling episode, Pleasant Prai rie plant personnel provided the sampling

team with operational data for each of the gene rating units and the FGD scrubber system, as well

as operational and flow data for the FGD wastew ater treatment system. Table 3-8 presents the

unit operating characteristics, Table 3-9 presents the FGD scrubber system operating

characteristics, Table 3-10 presents informati on on the coal burned during the sampling episode,

Table 3-11 presents information on the FGD sc rubber slurry generation during the sampling

episode, and Table 3-12 presents th e FGD wastewater treatment syst em operating characteristics.

3.4 Deviations from the Sampling and Analysis Plan

The sampling episode proceeded as specified in the Sampling Plan with the exceptions

described below:

 

# Influent sample tap set up at SP-1 (Day 1): Before the sample line was purged

prior to sample collection, the second ary hydrocyclone became clogged. A plant

operator cleaned the blockage in the plugged hydrocyclone. Once the

hydrocyclone was operating, the line was purged for approximately 1 minute.

 

# Preservation of hexavalent chromium: ERG planned to preserve the hexavalent

chromium samples to a pH between 9.3 and 9.7 S.U. using an ammonium sulfate

buffer solution; however, since the amm onium sulfate buffer solution was not

achieving the desired pH, the samplers added only 100 drops of ammonium

sulfate buffer solution, followed by as mu ch ammonium hydroxide as necessary

to reach the desired pH.

 

# pH field test measurements: The sampling team was una ble to locate the pH

measurement strips during the following samples: the effluent from the FGD

wastewater treatment system mercury grab samples 3 and 4 on day 1 and the

influent to the FGD wastewater treat ment system grab sample on day 2.

Therefore, the team only took a pH reading using the pH meter, not the pH strips

for these samples.

 

# Total mercury grab sample at SP-2 (Days 1 and 2): On days 1 and 2 of sample

collection at the effluent from the FGD wastewater treatment system (SP-2), the

inner bag for grab three of the four total mercury grab sample bottles was leaking.

The inner bag was removed from the outer bag, dried, and re-labeled. The

samplers placed the inner bag back in the outer bag.

# 3-9 Table 3-1. Sample Collection Information, Pleasant Prairie

Sampling

Point

Number Sampling Point Description Type of

Sample Sample

Collection Date Sample Collection

Time

SP-1 Influent to FGD Wastewater Treatment

System – Day 1 Grab 6/21/10 1013 a 

# and 1220 b



# Influent to FGD Wa stewater Treatment

System – Day 2 Grab 6/22/10 0939 a 

# and 1132 b



# Influent to FGD Wa stewater Treatment

System – Day 3 Grab 6/23/10 0917 a 

# and 1112 b



# Influent to FGD Wa stewater Treatment

System – Day 4 Grab 6/24/10 0924 a 

# and 1108 b



# SP-2 Effluent from FGD Wastewater Treatment

System – Day 1 Composite 6/21/10

6/22/10 0730 c



# 0827 d



# Grab 6/21/10

6/22/10 0748 e 

# , 1348 f 

# , and 1946 g



# 0147 h



# Effluent from FGD Wastewater Treatment

System – Day 2 Composite 6/22/10

6/23/10 0728 c



# 0806 d



# Grab 6/22/10

6/23/10 0745 e 

# , 1348 f 

# , and 1947 g



# 0145 h



# Effluent from FGD Wastewater Treatment

System – Day 3 Composite 6/23/10

6/24/10 0730 c



# 0810 d



# Grab 6/23/10

6/24/10 0743 e 

# , 1347 f 

# , and 1950 g



# 0147 h



# Effluent from FGD Wastewater Treatment

System – Day 4 Composite 6/24/10

6/25/10 0729 c



# 0651 d



# Grab 6/24/10

6/25/10 0749 e 

# , 1348 f 

# , and 1947 g



# 0147 h



# SP-3 Duplicate of Effluent from FGD

Wastewater Treatment System – Day 2 Composite 6/22/10

6/23/10 0728 c



# 0806 d



# Grab 6/22/10

6/23/10 0747 e 

# , 1349 f 

# , and 1948 g



# 0146 h



# SP-4 Influent to FGD Wastewater Treatment

System Field Blank Grab 6/21/10 0958 i 

# and 1212 j



# SP-5 Effluent from FGD Wastewater Treatment

System Field Blank – Day 1 Composite 6/21/10

6/22/10 0653 k



# 0813 l



# Grab 6/21/10 0742 m



# Effluent from FGD Wastewater Treatment

System Field Blank – Day 2 Grab 6/22/10 0740 m



# Effluent from FGD Wastewater Treatment

System Field Blank – Day 3 Grab 6/23/10 0738 m



# Effluent from FGD Wastewater Treatment

System Field Blank – Day 4 Grab 6/24/10 0744 m

a 

# Start time for the collection of the total metals samples (total metals by 200.7, total metals by 200.8, total mercury,

and dissolved mercury) and classicals (BOD 5 

# , Group I, Group II, and total cyanide).

# 3-10 b 

# Start time for the collection of the dissolved metals samples (dissolved metals by 200.7, dissolved metals by 200.8,

and dissolved hexavalent chromium). Does not include dissolved mercury.

c 

# Started compositor.

d 

# Start time for the collection of dissolved metals samples (dissolved metals by 200.7, dissolved metals by 200.8,

and dissolved hexavalent chromium), total metals samples (total metals by 200.7 and total metals by 200.8), and

classicals (BOD 5 

# , Group I, and Group II).

e 

# Start time for the collection of the total and dissolved mercury Grab 1 samples.

f 

# Start time for the collection of the total and dissolved mercury Grab 2 samples.

g 

# Start time for the collection of the total and dissolved mercury Grab 3 and total cyanide samples.

h 

# Start time for the collection of the total and dissolved mercury Grab 4 samples.

i 

# Start time for the collection of total and dissolved mercury and total metals by 200.7 and total metals by 200.8 field

blank samples.

j 

# Start time for the collection of dissolved metals by 200.7 and dissolved metals by 200.8, and hexavalent chromium

field blank samples.

k 

# Filled 20L field blank carboy

l 

# Start time for the collection of total metals by 200.7 and total metals by 200.8 field blank samples and collection of

dissolved hexavalent chromium, dissolved metals by 200.7, and dissolved metals by 200.8 field blank samples.

m



# Start time for the collection of total mercury field blank samples.

# 3-11Table 3-2. Sample Collection at Pleasant PrairieSamplingPointNumberSampling Point Name Total Metals (EPA Method 200.8 with collision cell Total Metals (EPA Method 200.7 Dissolved Metals (EPA Method 200.8 with collision cell Dissolved Metals (EPA Method 200.7 Total Mercury Dissolved Mercury Hexavalent Chromium BOD 5 Group I

a Group II

b Total CyanideSP-1 Influent to the FGD WastewaterTreatment System4 4 4 4 4 4 4 4 4 4 4SP-2 Effluent from the FGDWastewater Treatment System4+1QC 4+1QC 4+1QC 4+1QC 4+1QC4+1QC 4+1QC 4+1QC 4+1QC 4+1QC4+1QCSP-3 Duplicate of the Effluent fromFGD Wastewater TreatmentSystem1 1 1 1 1 1 1 1 1 11SP-4 Influent to the FGD WastewaterTreatment System Field Blank1 1 1 1 1 1SP-5 Effluent from the FGDWastewater Treatment SystemField Blank1 1 1 1 4 1Total Number of Samples 11+1QC 11+1QC 11+1QC 11+1QC 14+1QC 9+1QC 11+1QC 9+1QC 9+1QC 9+1QC 9+1QCa – Group I includes total suspended solids (TSS), total dissolved solids (TDS), sulfate, and chloride.b – Group II includes ammonia as nitrogen, nitrate/nitrite as nitrogen, total Kjeldahl nitrogen (TKN), chemical oxygen demand (COD), and total phosphorus.

# 3-12Table 3-3. Field Measurements, Pleasant PrairieSamplingPointNumberSampling PointDescriptionDateTimeTemperature(°C)pH(S.U.)WasteStream FlowRate(GPM)NotesMeteraStripsSP-1 Influent to FGDWastewater TreatmentSystem – Day 16/21/2010 1029555.8 660Samplers noted that the sampleshad a dark brown color andappeared to be high in solids. Nodetected sulfides or oxidants intotal cyanide grab.Influent to FGDWastewater TreatmentSystem – Day 26/22/2010 0953556.4 NC60Influent to FGDWastewater TreatmentSystem – Day 36/23/2010 0928556.34 760Influent to FGDWastewater TreatmentSystem – Day 46/24/2010 0935546.77 760SP-2 Effluent from FGDWastewater TreatmentSystem – Day 16/21/10 0750436.6 6.540.3Samples were clear and colorlessand did not have any observedparticulates. No detected sulfidesor oxidants in total cyanide grab.6/21/10 1348436.9 6.5 386/21/10 194642.46.8 NC 38.16/22/10 014742.46.9 NC 38.1Effluent from FGDWastewater TreatmentSystem – Day 26/22/10 0750436.9 6.5 356/22/10 1352436.9 7 32.76/22/10 194741.56.9 7 35.06/23/10 014543.36.9 6.5 34.9Effluent from FGDWastewater TreatmentSystem – Day 36/23/10 0745446.87 7 356/23/10 1350446.85 7 356/23/10 195044.46.1 6.5 34.96/24/10 015544.26.9 6.5 34.4Effluent from FGDWastewater TreatmentSystem – Day 46/24/10 0752446.86 7 356/24/10 1350436.86 7 356/24/10 194743.86.9 6.5 35

# 3-13Table 3-3. Field Measurements, Pleasant PrairieSamplingPointNumberSampling PointDescriptionDateTimeTemperature(°C)pH(S.U.)WasteStream FlowRate(GPM)NotesMeteraStrips6/25/10 014743.67.0 7 34.9aThe pH meter was calibrated prior to the sampling episode and once every day during the sampling episode using prepackaged buffer solutions at pH 4.0, 7.0,and 10.0.NC – Not collected. The sampling team was unable to locate the pH strips during the collection of these samples; therefore, thepH measurement was only takenwith the pH meter.[NOTE TO PLEASANT PRAIRIE: Provide the flow rate (gpm) for theinfluent to the FGD wastewatertreatment system from the secondary hydrocyclone foreach minute from start to end times: 06/21/2010, 1000 to1032; 06/22/2010, 0935 to0957; 06/23/2010, 0915 to 0931; AND 06/24/2010, 0924 to 0938. Provide acomplete set of the flow rates for the effluent from the FGD wastewater treatment system as an hourly average for each hour ofthe sample compositing periods(if not available as an hourly average, please provide flow rate in 10 minute increments): 6/21/2010 at 0700 through 6/25/2010at 0700.]

# 3-14 Table 3-4. Crosswalk of Sample Number to Sampling Point and Day, Pleasant Prairie

Sample Number Sample Point Sample Description

71691 SP-1, Day 1 Influent to FGD Wastewater Treatment System - Day 1

71692 SP-1, Day 2 Influent to FGD Wastewater Treatment System - Day 2

71693 SP-1, Day 3 Influent to FGD Wastewater Treatment System - Day 3

71694 SP-1, Day 4 Influent to FGD Wastewater Treatment System - Day 4

71695 SP-2, Day 1 Effluent to FGD Wastewater Treatment System - Day 1

71696 SP-2, Day 2 Effluent to FGD Wastewater Treatment System - Day 2

71697 SP-2, Day 3 Effluent to FGD Wastewater Treatment System - Day 3

71698 SP-2, Day 4 Effluent to FGD Wastewater Treatment System - Day 4

71699 SP-3, Day 2 Duplicate of Effluent to FGD Wastewater Treatment System - Day 2

71700 SP-4, Day 1 Influent to FGD Wastewat er Treatment System Field Blank - Day 1

71701 SP-5, Day 1 Effluent to FGD Wastewat er Treatment System Field Blank - Day 1

71702 SP-5, Day 2 Effluent to FGD Wastewat er Treatment System Field Blank - Day 2

71703 SP-5, Day 3 Effluent to FGD Wastewat er Treatment System Field Blank - Day 3

71704 SP-5, Day 4 Effluent to FGD Wastewat er Treatment System Field Blank - Day 4

# 3-15 Table 3-5. Analytical Met hods, Pleasant Prairie

Parameter Method Number

Classicals

Biochemical oxygen demand (BOD 5 

# ) SM 5210 B

Chemical oxygen demand (COD) EPA 410.4

Total suspended solids (TSS) SM 2540 D

Total dissolved solids (TDS) SM 2540 C

Sulfate EPA 300.0

Chloride EPA 300.0

Ammonia as nitrogen EPA 350.1

Nitrate/nitrate as nitrogen EPA 353.2

Total Kjeldahl nitrogen (TKN) EPA 351.2

Total phosphorus EPA 365.1

Total cyanide SM 4500 CN E

Total and Dissolved Metals

Mercury EPA 1631E

Hexavalent chromium (dissolved only) EPA 218.6

Antimony, arsenic, cadmium, chromium, copper, lead, manganese, nickel,

selenium, silver, thallium, vanadium, and zinc EPA 200.8 with collision cell

Aluminum, barium, beryllium, boron, calcium, cobalt, iron, magnesium,

molybdenum, sodium, tin, and titanium EPA 200.7

# 3-16 Table 3-6. Summary of Sample Container a nd Planned Preservation, Pleasant Prairie

Parameter Sample

Container and

Volume QC Sample

Container and

Volume On-Site Preservation

Classicals

BOD 5 

# One 1-L plastic

bottle One 1-L plastic

bottle ≤ 6  C

Group I a 

# One 1-L plastic

bottles One 1-L plastic

bottles ≤ 6  C

Group II b 

# Two 1-L plastic

bottles Two 1-L plastic

bottles H 2 

# SO 4 

# to pH <2 S.U., ≤ 6  C

Total cyanide One 1-L plastic

bottle One 1-L plastic

bottles Dilution until sulfide is not detected,

NaAsO 2 

# until total chlorine is not

present, NaOH to pH >10 S.U.,

≤ 6  C

Metals

Total metals (EPA Method 200.8 with

collision cell) One 500-mL

plastic bottle No additional

volume needed None

(acid preserve at laboratory)

Total metals (EPA Method 200.7) One 500-mL

plastic bottle No additional

volume needed None

(acid preserve at laboratory)

Dissolved metals (EPA Method 200.8

with collision cell) One 500-mL

plastic bottle No additional

volume needed 0.45-μm filter (performed in field)

(acid preserve at laboratory)

Dissolved metals (EPA Method 200.7) One 500-mL

plastic bottle No additional

volume needed 0.45-μm filter (performed in field)

(acid preserve at laboratory)

Total mercury: None

(acid preserve at laboratory) Manual composite grab samples Four 125-mL

glass bottle No additional

volume needed

Influent samples and field blank

samples Two 250-mL

glass bottle No additional

volume needed

Dissolved mercury: None

(filter and acid preserve at

laboratory) Manual composite grab samples Four 125-mL

glass bottle No additional

volume needed

Influent samples One 250-mL

glass bottle No additional

volume needed

Hexavalent chromium One 250-mL

plastic bottle No additional

volume needed 0.45-μm filter (performed in field)

Ammonium sulfate buffer to

pH 9.3 – 9.7 S.U., ≤ 6  C

(a) Group I includes TSS, TDS, sulfate, and chloride.

(b) Group II includes ammonia as nitrogen, COD, nitr ate/nitrite as nitrogen, TKN, and total phosphorus.

# 3-17 Table 3-7. Sample Preservation Summary, Pleasant Prairie

Sampling Point

Number Analysis Date Chemical

Added Initial pH Final pH Amount

Added

(drops)

71691 Group II Volume 1 6/21/10 H 2 

# SO 4 

# 6.0 2 55

71691 Group II Volume 2 6/21/10 H 2 

# SO 4 

# 6.0 2 55

71691 Hexavalent Chromium 6/21/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.0 9.4 100

NH 4 

# OH 5

71700 Hexavalent Chromium Field

Blank 6/21/10 (NH 4 

# ) 2 

# SO 4



# Buffer 5.5 9.5 100

NH 4 

# OH 3

71691 Total Cyanide 6/21/10 NaOH 6.0 10 35

71692 Total Cyanide 6/22/10 NaOH 6.5 10 35

71695 Total Cyanide 6/21/10 NaOH 7.0 10 55

71692 Group II Volume 1 6/22/10 H 2 

# SO 4 

# 6.5 2 65

71692 Group II Volume 2 6/22/10 H 2 

# SO 4 

# 6.5 2 65

71695 Group II Volume 1 6/22/10 H 2 

# SO 4 

# 6.0 2 50

71695 Group II Volume 2 6/22/10 H 2 

# SO 4 

# 6.0 2 50

71692 Hexavalent Chromium 6/22/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 3

71695 Hexavalent Chromium 6/22/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 5

71701 Hexavalent Chromium Field

Blank 6/22/10 (NH 4 

# ) 2 

# SO 4



# Buffer 5.5 9.5 100

NH 4 

# OH 3

71696 Total Cyanide 6/22/10 NaOH 6.9 10 45

71699 Total Cyanide 6/22/10 NaOH 6.9 10 45

71693 Group II Volume 1 6/23/10 H 2 

# SO 4 

# 6.5 2 55

71693 Group II Volume 2 6/23/10 H 2 

# SO 4 

# 6.5 2 55

71696 Group II Volume 1 6/23/10 H 2 

# SO 4 

# 6.5 2 65

71696 Group II Volume 2 6/23/10 H 2 

# SO 4 

# 6.5 2 65

71699 Group II Volume 1-Duplicate 6/23/10 H 2 

# SO 4 

# 6.5 2 65

71697 Group II Volume 2-Duplicate 6/23/10 H 2 

# SO 4 

# 6.5 2 65

71693 Hexavalent Chromium 6/23/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 5

71696 Hexavalent Chromium 6/23/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 4

# 3-18 Table 3-7. Sample Preservation Summary, Pleasant Prairie

Sampling Point

Number Analysis Date Chemical

Added Initial pH Final pH Amount

Added

(drops)

71699 Hexavalent Chromium -

Duplicate 6/23/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 34

NH 4 

# OH 5

71693 Total Cyanide 6/23/10 NaOH 6.5 10 40

71697 Total Cyanide 6/23/10 NaOH 6.1 10 50

71697 Total Cyanide - QC 6/23/10 NaOH 6.1 10 50

71694 Group II Volume 1 6/24/10 H 2 

# SO 4 

# 6.5 2 65

71694 Group II Volume 2 6/24/10 H 2 

# SO 4 

# 6.5 2 65

71697 Group II Volume 1 6/24/10 H 2 

# SO 4 

# 6.5 2 55

71697 Group II Volume 2 6/24/10 H 2 

# SO 4 

# 6.5 2 55

71697 Group II Volume 1 - QC 6/24/10 H 2 

# SO 4 

# 6.5 2 55

71697 Group II Volume 2 - QC 6/24/10 H 2 

# SO 4 

# 6.5 2 55

71698 Group II Volume 1 6/25/10 H 2 

# SO 4 

# 6.5 2 55

71698 Group II Volume 2 6/25/10 H 2 

# SO 4 

# 6.5 2 55

71694 Hexavalent Chromium 6/24/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.7 9.5 100

NH 4 

# OH 5

71697 Hexavalent Chromium - QC 6/24/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 4

71698 Hexavalent Chromium 6/25/10 (NH 4 

# ) 2 

# SO 4



# Buffer 6.5 9.5 100

NH 4 

# OH 5

71694 Total Cyanide 6/24/10 NaOH 6.5 10 40

71698 Total Cyanide 6/24/10 NaOH 6.5 10 40

# 3-19 Table 3-8. Generating Unit Operating Charact eristics during Sample Collection, Pleasant

Prairie

Unit ID Boiler Type Capacity

(MW) Electricity Production

(MW)

(or Percent Capacity %) SCR

(No, On, Off) Particulate Control System

(HS/CS ESP, or BH)

1 Riley Turbo Opposed

Wall - Fired 594 49,997 MWHr On CS ESP

2 Riley Turbo Opposed

Wall - Fired 594 50,540 MWhr On CS ESP



# CS ESP – Cold-side elect rostatic precipitator.

# 3-20Table 3-9. FGD Scrubber System OperatingCharacteristics, Pleasant PrairieUnit IDWet FGDSystem (Yes/No)Type ofScrubberForcedOxidation(Yes/No)SorbentAdditives (DBA,formic acid,etc.)FGD Make-upWater SourceSO2RemovalPercentageType of SolidsSeparation1 Yes Spray / Tray YesLimestoneSilicon antifoam17 gpd/unitLake Michigan 97% Primary / Sec HC2 Yes Spray / Tray YesLimestoneSilicon antifoam17 gpd/unitLake Michigan 96% Primary / Sec HC

# 3-21 Table 3-10. Coal Usage during Sample Collection, Pleasant Prairie

Day of

Sampling Unit ID Coal Type Amount of Coal

Used During Day

of Sampling

(tpd) Source of Coal

(Coal Region

and/or State) Percent

Sulfur in

Coal

(%) Chlorine Content of

Coal

(ppm)

1 1 Sub Bit 8205.66 PRB/WY 0.5 % Est 42 ppm Est

2 Sub Bit 8059.82 PRB/WY 0.5 % Est 42 ppm Est

2 1 Sub Bit 8550.83 PRB/WY 0.5 % Est 42 ppm Est

2 Sub Bit 8365.23 PRB/WY 0.5 % Est 42 ppm Est

3 1 Sub Bit 8530.58 PRB/WY 0.5 % Est 42 ppm Est

2 Sub Bit 8276.14 PRB/WY 0.5 % Est 42 ppm Est

4 1 Sub Bit 8119.66 PRB/WY 0.5 % Est 42 ppm Est

2 Sub Bit 8371.29 PRB/WY 0.5 % Est 42 ppm Est



# Table 3-11. Scrubber Slurry Information durin g Sample Collection, Pleasant Prairie

Day of

Sampling FGD

System ID Associated

Unit IDs Scrubber Slurry

Blowdown Flow Rate 

# Scrubber

Slurry

Percent

Solids Time of

Dewatering

During

Sampling Day Percent

Filtrate

Recycled

Back to

Scrubber Flow Rate

(gpm) Duration

1 1 1 280 9.25 hr ~15% 0413 – 0900 EST,

1400 – 1830 EST 100%

2 2 280 9.0 hr ~15% 0830 – 1400 EST,

1600 – 1930 EST 100%

2 1 1 280 12.0 hr ~15% 0130 – 0800 EST

1300 – 1822 EST 100%

2 2 280 10.5 hr ~15% 0500 – 1100 EST,

1600 – 2030 EST 100%

3 1 1 280 8.5 hr ~15% 0125 – 0620 EST

1125 – 1500 EST 100%

2 2 280 10.0 hr ~15% 0620 – 1130 EST

1345 – 1500 EST

2230 – 2400 EST 100%

4 1 1 280 13.5 hr ~15% 0018 – 0710 EST

1725 – 2400 EST 100%

2 2 280 9.0 hr ~15% 0000 – 0312 EST

1400 – 1945 EST 100%

# 3-22Table 3-12. FGD Wastewater Treatment SystemOperation Information, Pleasant PrairieDay ofSamplingScrubber PurgeChemical UsageFlow Rate(GPM)aDurationACTLime(added to adjustpH 5.6 to 8.5)bFerric ChlorideACTOrganosulfideNalmet 168950 ppmACTPolymer:GE AE170320 ppm primary3.5 ppm sec ACTAcid:HCl 31%ACT1 60 18.0 hr 670 lb/day 40 mL/min 6 mL/min 4 mL/min ~5 mL/min2 60 16.25 hr 670 lb/day 40 mL/min 6 mL/min 4 mL/min ~5 mL/min3 60 17.5 hr 670 lb/day 40 mL/min 6 mL/min 4 mL/min ~5 mL/min4 60 20.25 hr 670 lb/day 40 mL/min 6 mL/min 4 mL/min ~5 mL/mina- Purge rate estimated from tank level changes. Similar to Secondary Hydrocyclone design data of 60 gpm to overflow/purgeb- Lime feeder operates 4 times per day for 10 minutes; feeder rate is 1000 lb/hr, 670 lbs/day. Checks against lime deliveries.ACT – Actual value during sampling episode.

# 4-1 4. L ABORATORY 

# A NALYTICAL 

# R ESULTS AND 

# D ISCUSSION



# This section summarizes the laboratory results of analyses of samples for the influent to

the FGD wastewater treatment system and the effluent from the FGD wastewater treatment

system.

Appendix A provides all analytical results for all samples collected at Pleasant Prairie,

including all qualified results a nd all results that were measur ed above the method detection

limit, but below the quantita tion limit (i.e., J-values).

Table 4-1 presents the analytical results for all classical and metal analytes for the four

days of sampling at the influent to the FGD wast ewater treatment system (SP-1), as well as the

calculated 4-day average result for each analyte for the sampling point. Table 4-2 presents the

analytical results for all classical and metal analyt es for the four days of sampling at the effluent

from the FGD wastewater treatment system (SP-2).

Tables 4-1 and 4-2 include the analytical results for all anal ytes for which EPA conducted

analyses. Results are rounded to three signifi cant digits. If an analyte was not detected in a

sample above the method detection limit, the resu lt is reported as “ND” followed by the samplespecific quantitation limit in parentheses. If an analyte was measured above the method

detection limit, but below the quantitation limit, the result is reported as “NQ” followed by the

sample-specific quantitation limit in parentheses.

For Table 4-2 (effluent from the FGD wastew ater treatment system), a duplicate sample

was collected on Day 2 of the sampling episode. The Day 2 results presented in Table 4-2

represent the averag e of the original and the duplicate samp le results. Table 5-2 presents the

analytical results for the original and duplicat e results and the calculated relative percent

difference (RPD).

When calculating the average concentrations for the duplicate samples or for the 4-day

averages, ERG used the following methodology:

 If all results were above the quantitati on limit, then all results were averaged

together;

 If at least one result was above the quan titation limit, then 1⁄2 the quantitation limit

was used in the average calculation for all results that were less than the

quantitation limit and the result is repo rted with a less than sign (“<”);

 If all results were below the quantitation limit, but at least one result was above

the method detection limit (i.e., J-value), then the sample-specific quantitation

limits for all results were averaged and the result is reported as “NQ” followed by

the average of the sample-specific quantitation limits; and

 If all results were below the method de tection limit, then the sample-specific

quantitation limits for all results were aver aged and the result is reported as “ND”

followed by the average of the sample-specific quantitation limits.

Table 4-3 presents the 4-day average results fo r all classical analytes for the influent to

the FGD wastewater treatment system (SP-1) and the efflue nt from the FGD wastewater

# 4-2 treatment system (SP-2). Table 4-4 presents th e 4-day average results for all metal analytes,

including total and dissolved analyses, for the in fluent to the FGD wastewater treatment system

(SP-1) and the effluent from th e FGD wastewater treatment system (SP-2). The results presented

in this report are not paired results, meaning that the sample collection across the treatment

system was not timed to reflect the amount of time it takes the wastewater to pass through the

system.

Appendix Tables A-1 through A-9 present all the analytical results from the influent to

the FGD wastewater treatment system (SP-1), th e effluent from the FGD wastewater treatment

system (SP-2), and the duplicate of the effluentfrom the FGD wastewater treatment system (SP3) sample analyses, including J-values.

# 4-3< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.+- The accuracy of the Day 1 dissolved mercury analytical result seems questionable based on the results from the other sampling days. If the Day 1 dissolved mercury result wasexcluded from the calculated average, the 4-day average would be 2,940 ng/L.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-1. Influent to FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodInfluent to FGD Wastewater Treatment System (SP-1)Day 1Day 2Day 3Day 44-Day AverageClassicalsAmmoniamg/L350.119.013.012.014.014.5Nitrate Nitrite as Nmg/L353.2150160160160158Nitrogen, Total Kjeldahlmg/L351.286.0472.0B16.0B76.0B62.5Biochemical Oxygen Demandmg/L5210BND (2.00)ND (2.00)ND (2.00)ND (2.00)ND (2.00)Chemical Oxygen Demandmg/L410.4420F460410400*423Chloridemg/L300.01,8001,8001,8001,8001,800Sulfatemg/L300.014,00016,00017,00017,00016,000Cyanide, Totalmg/L4500 CN E0.250B0.280B0.180B0.230B0.235Total Dissolved Solidsmg/L2540C23,00024,00024,00026,00024,300Total Suspended Solidsmg/L2540D3,8007,1003,3003,5004,430Phosphorus, Totalmg/L365.10.950B0.250BNQ (0.250)B0.0630B< 0.347Total MetalsAluminumug/L200.7110,000B,4130,000120,000140,000125,000Antimonyug/L200.865.063.063.060.062.8Arsenicug/L200.8150160140150150Bariumug/L200.7680F770750510678Berylliumug/L200.74.805.105.005.105.00Boronug/L200.711,000B,412,000B12,000B13,00012,000Cadmiumug/L200.89.2011.011.013.011.1Calciumug/L200.7670,000B,4690,000690,000700,000688,000Chromiumug/L200.81,4004,^1,000^9609801,090Cobaltug/L200.7140140140140140

# 4-4< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.+- The accuracy of the Day 1 dissolved mercury analytical result seems questionable based on the results from the other sampling days. If the Day 1 dissolved mercury result wasexcluded from the calculated average, the 4-day average would be 2,940 ng/L.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-1. Influent to FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodInfluent to FGD Wastewater Treatment System (SP-1)Day 1Day 2Day 3Day 44-Day AverageCopperug/L200.81,30041,1001,0001,1001,130Ironug/L200.7400,000B,4420,000420,000410,000413,000Leadug/L200.82804280280280280Magnesiumug/L200.74,200,000B,44,200,000B4,000,0004,200,0004,150,000Manganeseug/L200.772,000B,476,000B73,00074,00073,800Mercuryng/L1631E2,020,0002,080,0002,060,0001,730,0001,970,000Molybdenumug/L200.7240240240240240Nickelug/L200.81,60041,4001,4001,4001,450Seleniumug/L200.820,000415,00015,000B15,000B16,300Silverug/L200.8NQ (2.00)FNQ (2.00)NQ (2.00)NQ (2.00)NQ (2.00)Sodiumug/L200.7470,0004510,000500,000520,000500,000Thalliumug/L200.811.012.011.010.011.0Tinug/L200.7NQ (200)NQ (200)NQ (200)NQ (200)NQ (200)Titaniumug/L200.74,50044,4004,3004,9004,530Vanadiumug/L200.81,40041,100B910970B1,100Zincug/L200.82,50041,300B1,4001,5001,680Dissolved MetalsAluminumug/L200.7NQ (200)NQ (200)B210NQ (200)^< 128Antimonyug/L200.83.803.403.704.103.75Arsenicug/L200.87.206.907.707.007.20Bariumug/L200.790.0F96.097.085.092.0Berylliumug/L200.7NQ (2.00)NQ (2.00)NQ (2.00)ND (2.00)NQ (2.00)Boronug/L200.713,000413,000B13,000B13,000B13,000

# 4-5< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.+- The accuracy of the Day 1 dissolved mercury analytical result seems questionable based on the results from the other sampling days. If the Day 1 dissolved mercury result wasexcluded from the calculated average, the 4-day average would be 2,940 ng/L.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-1. Influent to FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodInfluent to FGD Wastewater Treatment System (SP-1)Day 1Day 2Day 3Day 44-Day AverageCadmiumug/L200.84.504.406.90NQ (4.00)< 4.45Calciumug/L200.7550,0004550,000550,000560,000553,000Chromiumug/L200.8ND (8.00)^ND (8.00)^ND (8.00)^ND (8.00)^ND (8.00)Chromium (VI)ug/L218.6ND (10.0)ND (10.0)ND (10.0)ND (10.0)ND (10.0)Cobaltug/L200.7110120120110115Copperug/L200.828.031.034.023.029.0Ironug/L200.7NQ (200)ND (200)NQ (200)NQ (200)NQ (200)Leadug/L200.8ND (2.00)ND (2.00)ND (2.00)ND (2.00)ND (2.00)Magnesiumug/L200.74,100,00044,000,000B3,800,000B3,800,000B3,930,000Manganeseug/L200.770,000472,000B70,00067,000B69,800Mercuryng/L1631E1.96+3,8602,3702,6002,210+Molybdenumug/L200.749.040.047.050.046.5Nickelug/L200.893049401,000870935Seleniumug/L200.83,60043,500B3,8003,900B3,700Silverug/L200.8ND (2.00)FND (2.00)ND (2.00)ND (2.00)ND (2.00)Sodiumug/L200.7510,0004470,000490,000490,000490,000Thalliumug/L200.89.309.809.709.509.58Tinug/L200.7NQ (200)NQ (200)NQ (200)NQ (200)NQ (200)Titaniumug/L200.7ND (20.0)ND (20.0)ND (20.0)ND (20.0)ND (20.0)Vanadiumug/L200.8NQ (10.0)BNQ (10.0)BNQ (10.0)NQ (10.0)NQ (10.0)Zincug/L200.893.010011043.0B86.5

# 4-6Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for theanalytical results for the individual samples.< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-2. Effluent From FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodEffluent from the FGD Wastewater Treatment System (SP-2)Day 1Day 2Day 3Day 44-DayAverageClassicalsAmmoniamg/L350.123.020.018.016.019.3Nitrate Nitrite as Nmg/L353.2160160160160160Nitrogen, Total Kjeldahlmg/L351.272.0B68.064.0B,452.064.0Biochemical Oxygen Demandmg/L5210BND (2.00)NQ (2.50)NQ (2.50)NQ (2.50)NQ (2.38)Chemical Oxygen Demandmg/L410.4390*455410F,*420419Chloridemg/L300.02,0002,0001,9001,9001,950Sulfatemg/L300.016,00016,00015,00015,00015,500Cyanide, Totalmg/L4500 CN E0.190B0.1850.240B,F0.180F0.199Total Dissolved Solidsmg/L2540C21,00023,50023,00022,000B22,400Total Suspended Solidsmg/L2540DNQ (4.00)NQ (4.00)NQ (4.00)NQ (4.00)NQ (4.00)Phosphorus, Totalmg/L365.10.0700B< 0.0825NQ (0.0500)B,FNQ (0.0500)B< 0.0506Total MetalsAluminumug/L200.7680F< 410ND (200)NQ (200)< 323Antimonyug/L200.82.502.352.202.402.36Arsenicug/L200.86.404.805.005.305.38Bariumug/L200.768.069.074.073.071.0Berylliumug/L200.7ND (2.00)ND (2.00)ND (2.00)ND (2.00)ND (2.00)Boronug/L200.710,000B,410,0009,300410,000B,49,830Cadmiumug/L200.8ND (4.00)ND (4.00)ND (4.00)ND (4.00)ND (4.00)Calciumug/L200.7650,0004655,000660,0004660,0004656,000Chromiumug/L200.8ND (8.00)^ND (8.00)ND (8.00)ND (8.00)^ND (8.00)Cobaltug/L200.7ND (20.0)NQ (20.0)ND (20.0)NQ (20.0)NQ (20.0)

# 4-7Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for theanalytical results for the individual samples.< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-2. Effluent From FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodEffluent from the FGD Wastewater Treatment System (SP-2)Day 1Day 2Day 3Day 44-DayAverageCopperug/L200.8ND (4.00)NQ (4.00)ND (4.00)ND (4.00)NQ (4.00)Ironug/L200.7NQ (200)NQ (200)210390F< 200Leadug/L200.8ND (2.00)NQ (2.00)ND (2.00)ND (2.00)NQ (2.00)Magnesiumug/L200.73,700,000B,43,550,0003,700,00043,500,00043,610,000Manganeseug/L200.711,000B,411,00011,000411,000411,000Mercuryng/L1631E78.486.472.974.978.1Molybdenumug/L200.7NQ (40.0)NQ (40.0)NQ (40.0)41.0< 25.3Nickelug/L200.8NQ (4.00)< 11.0NQ (4.00)7.30F< 5.58Seleniumug/L200.82,10042,1502,000B,42,00042,060Silverug/L200.8ND (2.00)FND (2.00)ND (2.00)FND (2.00)FND (2.00)Sodiumug/L200.7510,0004510,000530,0004500,0004513,000Thalliumug/L200.82.902.952.802.302.74Tinug/L200.7ND (200)NQ (200)ND (200)NQ (200)NQ (200)Titaniumug/L200.7ND (20.0)ND (20.0)ND (20.0)ND (20.0)ND (20.0)Vanadiumug/L200.8ND (10.0)ND (10.0)ND (10.0)ND (10.0)ND (10.0)Zincug/L200.8ND (10.0)< 9.50ND (10.0)NQ (10.0)< 6.13Dissolved MetalsAluminumug/L200.7ND (200)ND (200)NQ (200)^NQ (200)NQ (200)Antimonyug/L200.82.80< 1.752.602.70< 2.46Arsenicug/L200.84.905.404.204.904.85Bariumug/L200.767.069.072.069.069.3Berylliumug/L200.7ND (2.00)ND (2.00)ND (2.00)ND (2.00)ND (2.00)Boronug/L200.710,000B,410,0009,900B,49,800B,49,930

# 4-8Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for theanalytical results for the individual samples.< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.Table 4-2. Effluent From FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodEffluent from the FGD Wastewater Treatment System (SP-2)Day 1Day 2Day 3Day 44-DayAverageCadmiumug/L200.8ND (4.00)ND (4.00)ND (4.00)ND (4.00)ND (4.00)Calciumug/L200.7640,0004645,000660,0004610,0004639,000Chromiumug/L200.8ND (8.00)^ND (8.00)ND (8.00)^ND (8.00)^ND (8.00)Chromium (VI)ug/L218.6ND (10.0)ND (10.0)ND (10.0)ND (10.0)ND (10.0)Cobaltug/L200.7ND (20.0)NQ (20.0)ND (20.0)NQ (20.0)NQ (20.0)Copperug/L200.8ND (4.00)ND (4.00)ND (4.00)ND (4.00)ND (4.00)Ironug/L200.7NQ (200)NQ (200)NQ (200)NQ (200)NQ (200)Leadug/L200.8ND (2.00)ND (2.00)ND (2.00)ND (2.00)ND (2.00)Magnesiumug/L200.73,700,000B,43,550,0003,500,000B,43,500,000B,43,560,000Manganeseug/L200.711,000B,411,00010,000B,411,000410,800Mercuryng/L1631E22.827.020.519.022.3Molybdenumug/L200.7NQ (40.0)NQ (40.0)NQ (40.0)NQ (40.0)NQ (40.0)Nickelug/L200.8NQ (4.00)NQ (4.00)6.10NQ (4.00)< 3.03Seleniumug/L200.82,100B,42,1002,000B,42,10042,080Silverug/L200.8ND (2.00)FND (2.00)ND (2.00)FND (2.00)FND (2.00)Sodiumug/L200.7530,0004530,000520,0004490,0004518,000Thalliumug/L200.82.502.652.302.902.59Tinug/L200.7ND (200)NQ (200)ND (200)NQ (200)NQ (200)Titaniumug/L200.7ND (20.0)ND (20.0)ND (20.0)ND (20.0)ND (20.0)Vanadiumug/L200.8NQ (10.0)BND (10.0)ND (10.0)ND (10.0)NQ (10.0)Zincug/L200.819.0FND (10.0)ND (10.0)ND (10.0)< 8.50

# 4-9< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.Table 4-3. Classical Pollutants 4-Day Average Data Summaryfor FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodSP-1SP-2ClassicalsAmmoniamg/L350.114.519.3Nitrate Nitrite as Nmg/L353.2158160Nitrogen, Total Kjeldahlmg/L351.262.564.0Biochemical Oxygen Demandmg/L5210BND (2.00)NQ (2.38)Chemical Oxygen Demandmg/L410.4423419Chloridemg/L300.01,8001,950Sulfatemg/L300.016,00015,500Cyanide, Totalmg/L4500 CN E0.2350.199Total Dissolved Solidsmg/L2540C24,30022,400Total Suspended Solidsmg/L2540D4,430NQ (4.00)Phosphorus, Totalmg/L365.1< 0.347< 0.0506

# 4-10< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).* - The 4-day average result includes an analytical result where the accuracy is questionable. If the questionable result wasexcluded from the calculated average, the 4-dayaverage would be 2,940 ng/L.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.Table 4-4.Metal Pollutants 4-Day Average Data Summary for FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodInfluent to FGDWastewater TreatmentSystem (SP-1)4-Day AverageEffluent fromFGD Wastewater TreatmentSystem (SP-2)4-Day AverageTotalDissolvedTotalDissolvedMetalsAluminumug/L200.7125,000< 128< 323NQ (200)Antimonyug/L200.862.83.752.36< 2.46Arsenicug/L200.81507.205.384.85Bariumug/L200.767892.071.069.3Berylliumug/L200.75.00NQ (2.00)ND (2.00)ND (2.00)Boronug/L200.712,00013,0009,8309,930Cadmiumug/L200.811.1< 4.45ND (4.00)ND (4.00)Calciumug/L200.7688,000553,000656,000639,000Chromiumug/L200.81,090ND (8.00)ND (8.00)ND (8.00)Chromium (VI)ug/L218.6NAND (10.0)NAND (10.0)Cobaltug/L200.7140115NQ (20.0)NQ (20.0)Copperug/L200.81,13029.0NQ (4.00)ND (4.00)Ironug/L200.7413,000NQ (200)< 200NQ (200)Leadug/L200.8280ND (2.00)NQ (2.00)ND (2.00)Magnesiumug/L200.74,150,0003,930,0003,610,0003,560,000Manganeseug/L200.773,80069,80011,00010,800Mercuryng/L1631E1,970,0002,210*78.122.3Molybdenumug/L200.724046.5< 25.3NQ (40.0)Nickelug/L200.81,450935< 5.58< 3.03Seleniumug/L200.816,3003,7002,0602,080Silverug/L200.8NQ (2.00)ND (2.00)ND (2.00)ND (2.00)Sodiumug/L200.7500,000490,000513,000518,000Thalliumug/L200.811.09.582.742.59

# 4-11< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).* - The 4-day average result includes an analytical result where the accuracy is questionable. If the questionable result wasexcluded from the calculated average, the 4-dayaverage would be 2,940 ng/L.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the 4-day average result indicates that all results were below the quantitation limit, but at least one result is a Jvalue.Table 4-4.Metal Pollutants 4-Day Average Data Summary for FGD Wastewater Treatment System, Pleasant PrairieAnalyteUnitsMethodInfluent to FGDWastewater TreatmentSystem (SP-1)4-Day AverageEffluent fromFGD Wastewater TreatmentSystem (SP-2)4-Day AverageTotalDissolvedTotalDissolvedTinug/L200.7NQ (200)NQ (200)NQ (200)NQ (200)Titaniumug/L200.74,530ND (20.0)ND (20.0)ND (20.0)Vanadiumug/L200.81,100NQ (10.0)ND (10.0)NQ (10.0)Zincug/L200.81,68086.5< 6.13< 8.50

# 5-1 5. D ATA 

# Q UALITY



# Quality assurance/quality control (QA/QC) pro cedures applicable to the Pleasant Prairie

sampling episode are outlined in the Quality Assurance Project Plan for the Steam Electric

Rulemaking (QAPP) [2]. This section describes the QC pr ocedures used to assess the precision

and accuracy of the analytical data presented in Section 4 and Appendix A. QC practices used

for this sampling episode include the analysis of matrix spikes, blanks, duplicate samples, and

QC standard checks.

5.1 Analytical Quality Control

ERG contracted directly with analytical labor atories for the analysis of samples collected

during this episode. ERG verified that the pe rformance of the laboratories selected were

acceptable by conducting QC checks of the analytical data. Data review chemists at ERG

prepared written data review narr atives describing any qualifications of the analytical data from

this episode. The data review narrat ives are included in Appendix B.

5.2 Field Quality Control

This subsection discusses the bottle blanks, equipment blanks, field blanks, and field

duplicate sample results. Section 3.8 of the Samp ling Plan discusses fiel d QC specifications.

5.2.1 Bottle Blanks

ERG collects bottle blanks to evaluate possibl e contamination from the sample collection

bottles. Bottle blanks were collected and analyzed for metals (EPA Method 200.8, 200.7, and

1631E) by the supplier of the precleane d bottles, Frontier Global Sciences.

Frontier Global Sciences collected the bottl e blanks for the metals sample bottles by

filling the precleaned bottle with reagent water, pres erving the sample with nitric acid to a pH <2

S.U. Frontier Global Sciences then an alyzed the samples using EPA Method 1638.

Frontier Global Sciences collected the bottl e blanks for the mercury sample bottles by

filling the precleaned bottle with reagent wa ter, preserving the sample with bromine

monochloride. Frontier Global Sciences then analyzed the samples using EPA Method 1631E.

Albion Environmental collected the bottle bl anks for the 10- and 20-liter composite

containers by filling the container with approx imately two liters of ASTM Type 1 water and

allowing it to soak for approximately 24 hours. During this period, th e laboratory shook the

container periodically and changed its orientation to expose all surfaces of the container to the

ASTM Type 1 water. Albion Environmental th en shook the 10- and 20-liter containers and

poured a representative sample into a precleaned LDPE sample bottle. The blank samples were

then preserved and analyzed according to the analytical methods (i.e., EPA Method 1638).

No metals were detected in the bottle bl anks, except for aluminum in the 10-liter

composite containers. Aluminum was detected in the 10-L container at a concentration of 4.71

ug/L, which is well below the quantitation limit us ed for the sample analyses (i.e., 200 ug/L);

therefore, this contamination di d not affect the resu lts of the sampling episode. Appendix Table

# 5-2 A-10 presents all of the analytical results from the bottle blank an alyses for the bottles used to

collect the metals and mercury samples.

5.2.2 Equipment Blanks

EPA collects equipment blanks to evaluate possible contamination from the equipment

used for sample collection. The techniques used to collect field blanks (a s described in Section

5.2.3) include the sampling equipment and ther efore would identify whether the sampling

equipment was introducing contamination. In a ddition, Frontier Global Sciences collected and

analyzed equipment blanks for metals (EPA Method 1638 and 1631E) for each type of

precleaned equipment supp lied for the episode.

Frontier Global Sciences collected the equipment blanks for the capsule filters and

fabricated tubing sets by pumping reagent wa ter through the cleaned and fully assembled

equipment sets (with the filter attached) into a cleaned bottle (an HDPE bottle for metals and a

glass bottle for mercury). The blank samples were then preserved and analyzed according to the

analytical methods (EPA Method 1638 and 1631E), as described in Section 5.2.1 for the bottle

blank samples.

No other metals were detected in the e quipment blanks, indicating that there was no

contamination from the sampling equipment. Appe ndix Table A-10 presents all of the analytical

results from the bottle blank and equipment blank analyses for all of the equipment used for the

collection of metals and mercury samples.

5.2.3 Field Blanks

The sampling team collected field blanks (SP-4 and SP-5) to evaluate possible

contamination from sampling equipment, samp ling equipment decontamination procedures,

sample collection procedures, or atmospheric contamination. EPA analyzed the field blank

samples for the total and dissolved metals and total and dissolved mercury samples 2



# .

The total mercury, total metals by 200.8, and total metals by 200.7 field blank samples

for the influent to the FGD wastewater treatm ent system (SP-4) were collected by pouring

ASTM Type 1 water through a precle aned funnel attached to the si licone tubing used for sample

collection. To prevent potential atmospheric deposition, the sampling team shrouded the blank

water and funnel with a plastic bag while pouring the blank water into the funnel and placed the

sample bottles in a “cleanbox.” Prior to filli ng the sample bottles, the tubing was purged with

approximately 1 liter of blank water. The ASTM Type 1 water flowed through the funnel, tubing,

and “Y” splitter, and was poured into the sample bottles. EPA collected the field blank samples

as “true” split samples with Pleasant Prairie’s re presentative, using the sa me procedure discussed

in the sample collection description (Section 3.1).

2 

# EPA did not collect a dissolved mercury field blank samp le because the sample filtration was performed at the

laboratory to minimize potential mercury contamination. The laboratory performed a filtration blank prior to

filtering the sample, which is assessed as the field bl ank for the dissolved mercury sample. Mercury was not

detected above the method detection limit (0.24 ng/L) in the filtration blanks performe d for any of the days of

samples.

# 5-3 The dissolved metals by 200.8, dissolved metals by 200.7, and dissolved hexavalant

chromium field blank samples for the influent to the FGD wastew ater treatment system (SP-4)

were collected by pouring ASTM Type 1 water th rough the funnel and tubi ng and into a 10-liter

composite container. After around 120 minutes , the sampling team began pumping off the

ASTM Type 1 water from the 10-liter composite c ontainer. Prior to filling the sample bottles, the

tubing was purged for around 40 seconds. The sample bottles were placed in a “cleanbox” and

the ASTM Type 1 water was pumped through the t ubing, capsule filter, and “Y” splitter, and into

the sample bottles. EPA collected the field bla nk samples as “true” split samples with Pleasant

Prairie’s representative, using th e same procedure discussed in the sample collection description

(Section 3.1).

The total mercury field blank sample for the effluent from the FGD wastewater treatment

system (SP-5) was collected by shrouding one of th e three taps on the sample tap splitter with a

clear plastic bag. Before purgi ng the sample tap, ASTM Type 1 water was poured directly into

the sample bottles under the clear plastic bag.

The total and dissolved metals by 200.7 and metals by 200.8 field blank samples for the

effluent from the FGD wastewater treatment sy stem (SP-5) were collected by filling a 20-liter

composite container with ASTM Ty pe 1 water. The same T-splitter tubing used to fill the metals

composite container was used with a pump to f ill the 20-liter field blank composite container.

Prior to attaching one end of the tubing to the sample tap, it was placed directly into the

container holding ASTM Type 1 water. The othe r end of the tubing was attached to the vented

cap on top of the 20-liter field blank composite container. After enough volume was pumped into

the 20-liter field blank composite container, the vented cap was replaced with a closed cap and

the container was placed on ice in a covered plastic trash can. Th e vented cap used for the field

blank collection was the same cap that was late r used for the metals composite container.

After 24 hours, the ASTM Type 1 water in th e 20-liter field bla nk composite container

was pumped off into the individual sample bottles. The sample bottles were placed in a

“cleanbox” and the ASTM Type 1 water was pump ed through the tubing and “Y” splitter, and

into the sample bottles. EPA collected the fiel d blank samples as “true” split samples with

Pleasant Prairie’s representative, using the same procedure discussed in the sample collection

description (Section 3.1). Prior to filling the sample bot tles, the tubing was purged with

approximately one liter of ASTM Type 1 water. First the samplers collected the total metals by

200.8 and total metals by 200.7 field blank samples. Then the sampling team attached a filter to

the tubing set and purged the tubing with approximately one liter of ASTM Type 1 water. The

samplers then collected the dissolved metals by 200.8, dissolved metals by 200.7, and dissolved

hexavalent chromium field blank samples.

Table 5-1 presents the field blank analyt ical results for SP-4 and SP-5. Only those

analytes that were detected in the field blank samples at levels above the quantitation limit are

included in the table. Results are rounded to three significant digits . Appendix Tables A-11

through A-15 present all the analytical results for the field blanks from each of the sampling

points, including all qualified results and all results that were measured above the method

detection limit, but below the quantitation limit (i.e., J-values).

# 5-4 5.2.4 Field Duplicates

The sampling team collected field duplicate samples to assess the sampling measurement

precision for the episode. Field dupl icate samples are separate samp les collected from the same

location as the original sample. The duplicate is filled immediately after the original sample and

is stored and analyzed independently. The RPD be tween the two sample results is examined to

determine the precision of the data. EPA used the following equation to calculate the RPD for

the duplicate sample results.

100

2 D S D S (%) RPD         

 

# (5-1)

where:

S = concentration of the analyte from original sample analysis;

D = concentration of the analyte from the duplicate sample analysis; and

RPD = relative percent difference between the original and duplicate sample

result.

During this sampling episode, EPA collected du plicate samples for the effluent from the

FGD wastewater treatment system (SP-3) durin g day 2 of the sampling episode. The duplicate

samples were analyzed for all analytes. Table 5-2 presents analytical results and the RPD for SP3. Results are rounded to three significant digits . Appendix Tables A-6 and A-9 present all the

analytical results for the efflue nt from the FGD wastewater trea tment system (SP-2) Day 2 and

the duplicate of the effluent from the FGD wastew ater treatment system ( SP-3) sample analyses,

including all qualified results a nd all results that were measur ed above the method detection

limit, but below the quantita tion limit (i.e., J-values).< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).NC – Not calculated.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the average result indicates that all results were below the quantitation limit, but at least one result is a J-value.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.



# 5-5Table 5-1. Field Blank Analytical Results, Pleasant PrairieAnalyteSample DescriptionMethodUnitsConcentrationTotal MetalsNickelEffluent from FGD Wastewater Treatment System Field Blank - Day 1200.8ug/L6.20SeleniumInfluent to FGD Wastewater Treatment System Field Blank - Day 1200.8ug/L4.70< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).NC – Not calculated.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the average result indicates that all results were below the quantitation limit, but at least one result is a J-value.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.



# 5-6Table 5-2. Field Duplicate Results– Effluent from FGD Wastewater Treatment System, Pleasant PrairieAnalyteMethodUnitsOriginalEffluent from FGDWastewater TreatmentSystem, Day 2Concentration(SP-2)DuplicateEffluent from FGDWastewater TreatmentSystem Concentration(SP-4)AverageResultRelativePercentDifferenceClassicalsAmmonia350.1mg/L20.020.020.00.00Nitrate Nitrite as N353.2mg/L1601601600.00Nitrogen, Total Kjeldahl351.2mg/L66.0B70.0B68.05.88Biochemical Oxygen Demand5210Bmg/LNQ (2.50)NQ (2.50)NQ (2.50)NCChemical Oxygen Demand410.4mg/L4404704556.59Chloride300.0mg/L2,0002,0002,0000.00Sulfate300.0mg/L16,00016,00016,0000.00Cyanide, Total4500 CNEmg/L0.210B0.160B0.18527.0Total Dissolved Solids2540Cmg/L24,00023,00023,5004.26Total Suspended Solids2540Dmg/LNQ (4.00)NQ (4.00)NQ (4.00)NCPhosphorus, Total365.1mg/L0.140BNQ (0.0500)B< 0.0825NCTotal MetalsAluminum200.7ug/L720FND (200)< 410NCAntimony200.8ug/L2.402.302.354.26Arsenic200.8ug/L4.704.904.804.17Barium200.7ug/L69.069.069.00.00Beryllium200.7ug/LND (2.00)ND (2.00)ND (2.00)NCBoron200.7ug/L10,000B,410,000B10,0000.00Cadmium200.8ug/LND (4.00)ND (4.00)ND (4.00)NC< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).NC – Not calculated.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the average result indicates that all results were below the quantitation limit, but at least one result is a J-value.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.



# 5-7Table 5-2. Field Duplicate Results– Effluent from FGD Wastewater Treatment System, Pleasant PrairieAnalyteMethodUnitsOriginalEffluent from FGDWastewater TreatmentSystem, Day 2Concentration(SP-2)DuplicateEffluent from FGDWastewater TreatmentSystem Concentration(SP-4)AverageResultRelativePercentDifferenceCalcium200.7ug/L650,0004660,000655,0001.53Chromium200.8ug/LND (8.00)ND (8.00)ND (8.00)NCCobalt200.7ug/LNQ (20.0)NQ (20.0)NQ (20.0)NCCopper200.8ug/LNQ (4.00)ND (4.00)NQ (4.00)NCIron200.7ug/LNQ (200)NQ (200)NQ (200)NCLead200.8ug/LNQ (2.00)ND (2.00)NQ (2.00)NCMagnesium200.7ug/L3,600,00043,500,0003,550,0002.82Manganese200.7ug/L11,000411,00011,0000.00Mercury1631Eng/L88.384.486.44.52Molybdenum200.7ug/LNQ (40.0)NQ (40.0)NQ (40.0)NCNickel200.8ug/L20.0FNQ (4.00)< 11.0NCSelenium200.8ug/L2,200B,42,100B2,1504.65Silver200.8ug/LND (2.00)FND (2.00)ND (2.00)NCSodium200.7ug/L510,0004510,000510,0000.00Thallium200.8ug/L3.102.802.9510.2Tin200.7ug/LND (200)NQ (200)NQ (200)NCTitanium200.7ug/LND (20.0)ND (20.0)ND (20.0)NCVanadium200.8ug/LND (10.0)ND (10.0)ND (10.0)NCZinc200.8ug/L14.0FND (10.0)< 9.50NCDissolved MetalsAluminum200.7ug/LND (200)ND (200)ND (200)NC< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).NC – Not calculated.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the average result indicates that all results were below the quantitation limit, but at least one result is a J-value.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.



# 5-8Table 5-2. Field Duplicate Results– Effluent from FGD Wastewater Treatment System, Pleasant PrairieAnalyteMethodUnitsOriginalEffluent from FGDWastewater TreatmentSystem, Day 2Concentration(SP-2)DuplicateEffluent from FGDWastewater TreatmentSystem Concentration(SP-4)AverageResultRelativePercentDifferenceAntimony200.8ug/LNQ (2.00)2.50< 1.75NCArsenic200.8ug/L5.505.305.403.70Barium200.7ug/L68.070.069.02.90Beryllium200.7ug/LND (2.00)ND (2.00)ND (2.00)NCBoron200.7ug/L10,000B,410,000B10,0000.00Cadmium200.8ug/LND (4.00)ND (4.00)ND (4.00)NCCalcium200.7ug/L640,0004650,000645,0001.55Chromium200.8ug/LND (8.00)^ND (8.00)^ND (8.00)NCChromium (VI)218.6ug/LND (10.0)ND (10.0)ND (10.0)NCCobalt200.7ug/LND (20.0)NQ (20.0)NQ (20.0)NCCopper200.8ug/LND (4.00)ND (4.00)ND (4.00)NCIron200.7ug/LNQ (200)NQ (200)NQ (200)NCLead200.8ug/LND (2.00)ND (2.00)ND (2.00)NCMagnesium200.7ug/L3,500,000B,43,600,000B3,550,0002.82Manganese200.7ug/L11,000411,00011,0000.00Mercury1631Eng/L27.426.527.03.34Molybdenum200.7ug/LNQ (40.0)NQ (40.0)NQ (40.0)NCNickel200.8ug/LNQ (4.00)NQ (4.00)NQ (4.00)NCSelenium200.8ug/L2,00042,2002,1009.52Silver200.8ug/LND (2.00)FND (2.00)ND (2.00)NCSodium200.7ug/L520,0004540,000530,0003.77< - Average result includes at least one value measured belowthe quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quantitation limit).NC – Not calculated.ND – Not detected (number in parentheses is the quantitation limit).NQ – Analyte was measured above the method detection limit, butbelow the quantitation limit (number shown in parentheses is the quantitation limit). The analytical result ispresented in Appendix A with a J flag designation. A “NQ” for the average result indicates that all results were below the quantitation limit, but at least one result is a J-value.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.



# 5-9Table 5-2. Field Duplicate Results– Effluent from FGD Wastewater Treatment System, Pleasant PrairieAnalyteMethodUnitsOriginalEffluent from FGDWastewater TreatmentSystem, Day 2Concentration(SP-2)DuplicateEffluent from FGDWastewater TreatmentSystem Concentration(SP-4)AverageResultRelativePercentDifferenceThallium200.8ug/L2.702.602.653.77Tin200.7ug/LND (200)NQ (200)NQ (200)NCTitanium200.7ug/LND (20.0)ND (20.0)ND (20.0)NCVanadium200.8ug/LND (10.0)ND (10.0)ND (10.0)NCZinc200.8ug/LND (10.0)ND (10.0)ND (10.0)NC

# 6-1 6. R EFERENCES



# 1. Eastern Research Group, Inc., 2010. Sampling Plan, We Energies’ Pleasant Prairie

Power Station. June 3. DCN SE00506.

2. Eastern Research Group, Inc., 2010. Quality Assurance Project Plan for the Steam

Electric Effluent Guidelines Rulemaking . (October). DCN SE00058.

# Appendix A

ANALYTICAL RESULTSND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-1Table A-1. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L41.9419Nitrate Nitrite as N353.2mg/L200.382150Nitrogen, Total Kjeldahl351.2mg/L41.520864Biochemical Oxygen Demand5210Bmg/L10.242ND (2)UChemical Oxygen Demand410.4mg/L520100420FChloride300.0mg/L50131501,800Sulfate300.0mg/L5001202,50014,000Cyanide, Total4500 CN Emg/L10.020.10.25BTotal Dissolved Solids2540Cmg/L14710023,000Total Suspended Solids2540Dmg/L111403,800Phosphorus, Total365.1mg/L10.0050.050.95BTotal MetalsAluminum200.7ug/L29.4200110,000B,4Antimony200.8ug/L20.72265Arsenic200.8ug/L21.24150Barium200.7ug/L22.520680FBeryllium200.7ug/L20.7124.8Boron200.7ug/L26.720011,000B,4Cadmium200.8ug/L21.249.2Calcium200.7ug/L269400670,000B,4Chromium200.8ug/L50822001,4004,^Cobalt200.7ug/L21.120140Copper200.8ug/L50241001,3004Iron200.7ug/L232200400,000B,4Lead200.8ug/L5018502804Magnesium200.7ug/L5054010,0004,200,000B,4ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-2Table A-1. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationManganese200.7ug/L501350072,000B,4Mercury1631Eng/L200,00049,700104,0002,020,000Molybdenum200.7ug/L21.640240Nickel200.8ug/L50221001,6004Selenium200.8ug/L501610020,0004Silver200.8ug/L20.5921.2J,FSodium200.7ug/L504,600250,000470,0004Thallium200.8ug/L20.47211Tin200.7ug/L24.820050JTitanium200.7ug/L21.6204,5004Vanadium200.8ug/L50422501,4004Zinc200.8ug/L501002502,5004Dissolved MetalsAluminum200.7ug/L29.4200120JAntimony200.8ug/L20.7223.8Arsenic200.8ug/L21.247.2Barium200.7ug/L22.52090FBeryllium200.7ug/L20.7120.84JBoron200.7ug/L26.720013,0004Cadmium200.8ug/L21.244.5Calcium200.7ug/L269400550,0004Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120110Copper200.8ug/L20.96428Iron200.7ug/L23220037JLead200.8ug/L20.732ND (2)UND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-3Table A-1. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMagnesium200.7ug/L5054010,0004,100,0004Manganese200.7ug/L501350070,0004Mercury1631Eng/L10.240.51.96Molybdenum200.7ug/L21.64049Nickel200.8ug/L50221009304Selenium200.8ug/L20.6243,6004Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000510,0004Thallium200.8ug/L20.4729.3Tin200.7ug/L24.820020JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7105.8J,BZinc200.8ug/L24.11093ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-4Table A-2. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L20.94213Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L41.52072BBiochemical Oxygen Demand5210Bmg/L10.242ND (2)UChemical Oxygen Demand410.4mg/L520100460Chloride300.0mg/L50131501,800Sulfate300.0mg/L5001202,50016,000Cyanide, Total4500 CN Emg/L10.020.10.28BTotal Dissolved Solids2540Cmg/L14710024,000Total Suspended Solids2540Dmg/L1281007,100Phosphorus, Total365.1mg/L50.0250.250.25BTotal MetalsAluminum200.7ug/L29.4200130,000Antimony200.8ug/L20.72263Arsenic200.8ug/L21.24160Barium200.7ug/L22.520770Beryllium200.7ug/L20.7125.1Boron200.7ug/L26.720012,000BCadmium200.8ug/L21.2411Calcium200.7ug/L269400690,000Chromium200.8ug/L50822001,000^Cobalt200.7ug/L21.120140Copper200.8ug/L50241001,100Iron200.7ug/L232200420,000Lead200.8ug/L501850280Magnesium200.7ug/L5054010,0004,200,000BManganese200.7ug/L501350076,000BMercury1631Eng/L200,00048,300101,0002,080,000ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-5Table A-2. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMolybdenum200.7ug/L21.640240Nickel200.8ug/L50221001,400Selenium200.8ug/L501610015,000Silver200.8ug/L20.5921JSodium200.7ug/L504,600250,000510,000Thallium200.8ug/L20.47212Tin200.7ug/L24.820047JTitanium200.7ug/L21.6204,400Vanadium200.8ug/L50422501,100BZinc200.8ug/L501002501,300BDissolved MetalsAluminum200.7ug/L29.4200170J,BAntimony200.8ug/L20.7223.4Arsenic200.8ug/L21.246.9Barium200.7ug/L22.52096Beryllium200.7ug/L20.7121.2JBoron200.7ug/L26.720013,000BCadmium200.8ug/L21.244.4Calcium200.7ug/L269400550,000Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120120Copper200.8ug/L20.96431Iron200.7ug/L232200ND (200)ULead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0004,000,000BManganese200.7ug/L501350072,000BMercury1631Eng/L4,0009752,0403,860Molybdenum200.7ug/L21.64040ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-6Table A-2. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationNickel200.8ug/L104.520940Selenium200.8ug/L20.6243,500BSilver200.8ug/L20.592ND (2)USodium200.7ug/L504,600250,000470,000Thallium200.8ug/L20.4729.8Tin200.7ug/L24.820014JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7105.8J,BZinc200.8ug/L24.110100ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-7Table A-3. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L20.94212Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L10.38516BBiochemical Oxygen Demand5210Bmg/L10.242ND (2)UChemical Oxygen Demand410.4mg/L520100410Chloride300.0mg/L50131501,800Sulfate300.0mg/L5001202,50017,000Cyanide, Total4500 CN Emg/L10.020.10.18BTotal Dissolved Solids2540Cmg/L14710024,000Total Suspended Solids2540Dmg/L1281003,300Phosphorus, Total365.1mg/L50.0250.250.085J,BTotal MetalsAluminum200.7ug/L29.4200120,000Antimony200.8ug/L20.72263Arsenic200.8ug/L21.24140Barium200.7ug/L22.520750Beryllium200.7ug/L20.7125Boron200.7ug/L26.720012,000BCadmium200.8ug/L21.2411Calcium200.7ug/L269400690,000Chromium200.8ug/L101640960Cobalt200.7ug/L21.120140Copper200.8ug/L50241001,000Iron200.7ug/L232200420,000Lead200.8ug/L103.610280Magnesium200.7ug/L5054010,0004,000,000Manganese200.7ug/L501350073,000Mercury1631Eng/L200,00048,300101,0002,060,000ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-8Table A-3. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMolybdenum200.7ug/L21.640240Nickel200.8ug/L50221001,400Selenium200.8ug/L103.12015,000BSilver200.8ug/L20.5920.82JSodium200.7ug/L504,600250,000500,000Thallium200.8ug/L20.47211Tin200.7ug/L24.820043JTitanium200.7ug/L21.6204,300Vanadium200.8ug/L108.450910Zinc200.8ug/L501002501,400Dissolved MetalsAluminum200.7ug/L29.4200210Antimony200.8ug/L20.7223.7Arsenic200.8ug/L21.247.7Barium200.7ug/L22.52097Beryllium200.7ug/L20.7121.1JBoron200.7ug/L26.720013,000BCadmium200.8ug/L21.246.9Calcium200.7ug/L269400550,000Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120120Copper200.8ug/L20.96434Iron200.7ug/L232200190JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,800,000BManganese200.7ug/L501350070,000Mercury1631Eng/L10024.150.52,370Molybdenum200.7ug/L21.64047ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-9Table A-3. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationNickel200.8ug/L50221001,000Selenium200.8ug/L20.6243,800Silver200.8ug/L20.592ND (2)USodium200.7ug/L504,600250,000490,000Thallium200.8ug/L20.4729.7Tin200.7ug/L24.820016JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7103.7JZinc200.8ug/L24.110110ND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-10Table A-4. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L20.94214Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L41.52076BBiochemical Oxygen Demand5210Bmg/L10.242ND (2)UChemical Oxygen Demand410.4mg/L520100400*Chloride300.0mg/L50131501,800Sulfate300.0mg/L5001202,50017,000Cyanide, Total4500 CN Emg/L10.020.10.23BTotal Dissolved Solids2540Cmg/L14710026,000Total Suspended Solids2540Dmg/L1281003,500Phosphorus, Total365.1mg/L10.0050.050.063BTotal MetalsAluminum200.7ug/L502405,000140,000Antimony200.8ug/L20.72260Arsenic200.8ug/L21.24150Barium200.7ug/L22.520510Beryllium200.7ug/L20.7125.1Boron200.7ug/L501705,00013,000Cadmium200.8ug/L21.2413Calcium200.7ug/L269400700,000Chromium200.8ug/L101640980Cobalt200.7ug/L21.120140Copper200.8ug/L50241001,100Iron200.7ug/L232200410,000Lead200.8ug/L103.610280Magnesium200.7ug/L5054010,0004,200,000Manganese200.7ug/L501350074,000ND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-11Table A-4. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMercury1631Eng/L200,00048,300101,0001,730,000Molybdenum200.7ug/L21.640240Nickel200.8ug/L50221001,400Selenium200.8ug/L103.12015,000BSilver200.8ug/L20.5921JSodium200.7ug/L504,600250,000520,000Thallium200.8ug/L20.47210Tin200.7ug/L24.820041JTitanium200.7ug/L21.6204,900Vanadium200.8ug/L108.450970BZinc200.8ug/L501002501,500Dissolved MetalsAluminum200.7ug/L29.420046J,^Antimony200.8ug/L20.7224.1Arsenic200.8ug/L21.247Barium200.7ug/L22.52085Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L501705,00013,000BCadmium200.8ug/L21.243.6JCalcium200.7ug/L269400560,000Chromium200.8ug/L23.38ND (8)U,^Chromium (VI) 218.6 ug/L 1 1.96 10 ND (10) UCobalt 200.7 ug/L 2 1.1 20 110Copper 200.8 ug/L 2 0.96 4 23Iron 200.7 ug/L 2 32 200 39 JLead 200.8 ug/L 2 0.73 2 ND (2) UMagnesium 200.7 ug/L 50 540 10,000 3,800,000 BND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-12Table A-4. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationManganese 200.7 ug/L 50 13 500 67,000 BMercury 1631E ng/L 2,000 487 1,020 2,600Molybdenum 200.7 ug/L 2 1.6 40 50Nickel 200.8 ug/L 10 4.5 20 870Selenium 200.8 ug/L 10 3.1 20 3,900 BSilver 200.8 ug/L 2 0.59 2 ND (2) USodium 200.7 ug/L 50 4,600 250,000 490,000Thallium 200.8 ug/L 2 0.47 2 9.5Tin 200.7 ug/L 2 4.8 200 12 JTitanium 200.7 ug/L 2 1.6 20 ND (20) UVanadium 200.8 ug/L 2 1.7 10 6 JZinc 200.8 ug/L 2 4.1 10 43 BND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-13Table A-5. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLAnalyteClassicalsAmmonia350.1mg/L41.9423Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L100.771072BBiochemical Oxygen Demand5210Bmg/L10.242ND (2)UChemical Oxygen Demand410.4mg/L520100390*Chloride300.0mg/L50131502,000Sulfate300.0mg/L5001202,50016,000Cyanide, Total4500 CN Emg/L10.020.10.19BTotal Dissolved Solids2540Cmg/L14710021,000Total Suspended Solids2540Dmg/L11.142JPhosphorus, Total365.1mg/L10.0050.050.07BTotal MetalsAluminum200.7ug/L29.4200680FAntimony200.8ug/L20.7222.5Arsenic200.8ug/L21.246.4Barium200.7ug/L22.52068Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400650,0004Chromium200.8ug/L23.38ND (8)U,^Cobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200120JLead200.8ug/L20.732ND (2)UND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-14Table A-5. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLAnalyteMagnesium200.7ug/L5054010,0003,700,000B,4Manganese200.7ug/L501350011,000B,4Mercury1631Eng/L102.415.0578.4Molybdenum200.7ug/L21.64034JNickel200.8ug/L20.8942.5JSelenium200.8ug/L20.6242,1004Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000510,0004Thallium200.8ug/L20.4722.9Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UDissolved MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.7222.8Arsenic200.8ug/L21.244.9Barium200.7ug/L22.52067Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400640,0004Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-15Table A-5. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLAnalyteIron200.7ug/L23220042JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,700,000B,4Manganese200.7ug/L501350011,000B,4Mercury1631Eng/L102.415.0522.8Molybdenum200.7ug/L21.64033JNickel200.8ug/L20.8943.1JSelenium200.8ug/L20.6242,100B,4Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000530,0004Thallium200.8ug/L20.4722.5Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7101.8J,BZinc200.8ug/L24.11019FND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-16Table A-6. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L41.9420Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L100.771066BBiochemical Oxygen Demand5210Bmg/L10.32.51.7JChemical Oxygen Demand410.4mg/L520100440Chloride300.0mg/L50131502,000Sulfate300.0mg/L5001202,50016,000Cyanide, Total4500 CN Emg/L10.020.10.21BTotal Dissolved Solids2540Cmg/L14710024,000Total Suspended Solids2540Dmg/L11.142.4JPhosphorus, Total365.1mg/L10.0050.050.14BTotal MetalsAluminum200.7ug/L29.4200720FAntimony200.8ug/L20.7222.4Arsenic200.8ug/L21.244.7Barium200.7ug/L22.52069Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400650,0004Chromium200.8ug/L23.38ND (8)UCobalt200.7ug/L21.1201.2JCopper200.8ug/L20.9641.1JIron200.7ug/L232200150JLead200.8ug/L20.7321.4JMagnesium200.7ug/L5054010,0003,600,0004ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-17Table A-6. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationManganese200.7ug/L501350011,0004Mercury1631Eng/L204.8310.188.3Molybdenum200.7ug/L21.64035JNickel200.8ug/L20.89420FSelenium200.8ug/L20.6242,200B,4Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000510,0004Thallium200.8ug/L20.4723.1Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.11014FDissolved MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.7221.9JArsenic200.8ug/L21.245.5Barium200.7ug/L22.52068Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400640,0004Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L23220037JLead200.8ug/L20.732ND (2)UND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-18Table A-6. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMagnesium200.7ug/L5054010,0003,500,000B,4Manganese200.7ug/L501350011,0004Mercury1631Eng/L5012.125.227.4Molybdenum200.7ug/L21.64032JNickel200.8ug/L20.8943.3JSelenium200.8ug/L20.6242,0004Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000520,0004Thallium200.8ug/L20.4722.7Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-19Table A-7. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L20.94218Nitrate Nitrite as N353.2mg/L500.955160Nitrogen, Total Kjeldahl351.2mg/L100.771064B,4Biochemical Oxygen Demand5210Bmg/L10.32.51.9JChemical Oxygen Demand410.4mg/L520100410F,*Chloride300.0mg/L50131501,900Sulfate300.0mg/L5001202,50015,000Cyanide, Total4500 CN Emg/L10.020.10.24B,FTotal Dissolved Solids2540Cmg/L1194023,000Total Suspended Solids2540Dmg/L11.142.4JPhosphorus, Total365.1mg/L10.0050.050.028J,B,FTotal MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.7222.2Arsenic200.8ug/L21.245Barium200.7ug/L22.52074Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.72009,3004Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400660,0004Chromium200.8ug/L23.38ND (8)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200210Lead200.8ug/L20.732ND (2)UND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-20Table A-7. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMagnesium200.7ug/L5054010,0003,700,0004Manganese200.7ug/L501350011,0004Mercury1631Eng/L102.415.0572.9Molybdenum200.7ug/L21.64033JNickel200.8ug/L20.8942.4JSelenium200.8ug/L20.6242,000B,4Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000530,0004Thallium200.8ug/L20.4722.8Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UDissolved MetalsAluminum200.7ug/L29.420017J,^Antimony200.8ug/L20.7222.6Arsenic200.8ug/L21.244.2Barium200.7ug/L22.52072Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L501705,0009,900B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400660,0004Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UND – Not detected (number in parentheses is the quantitation limit).* - LCS or LCSD is outside the laboratory control limits.^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-21Table A-7. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationIron200.7ug/L23220036JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,500,000B,4Manganese200.7ug/L501350010,000B,4Mercury1631Eng/L102.415.0520.5Molybdenum200.7ug/L21.64032JNickel200.8ug/L20.8946.1Selenium200.8ug/L20.6242,000B,4Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000520,0004Thallium200.8ug/L20.4722.3Tin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-22Table A-8. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L10.94216Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L100.771052Biochemical Oxygen Demand5210Bmg/L10.32.51.9JChemical Oxygen Demand410.4mg/L520100420Chloride300.0mg/L50131501,900Sulfate300.0mg/L5001202,50015,000Cyanide, Total4500 CN Emg/L10.020.10.18FTotal Dissolved Solids2540Cmg/L14710022,000BTotal Suspended Solids2540Dmg/L11.142JPhosphorus, Total365.1mg/L10.0050.050.018J,BTotal MetalsAluminum200.7ug/L29.420013JAntimony200.8ug/L20.7222.4Arsenic200.8ug/L21.245.3Barium200.7ug/L22.52073Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400660,0004Chromium200.8ug/L23.38ND (8)U,^Cobalt200.7ug/L21.1203JCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200390FLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,500,0004ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-23Table A-8. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationManganese200.7ug/L501350011,0004Mercury1631Eng/L10024.150.574.9Molybdenum200.7ug/L21.64041Nickel200.8ug/L20.8947.3FSelenium200.8ug/L20.6242,0004Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000500,0004Thallium200.8ug/L20.4722.3Tin200.7ug/L24.820015JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.1104.2JDissolved MetalsAluminum200.7ug/L29.420011JAntimony200.8ug/L20.7222.7Arsenic200.8ug/L21.244.9Barium200.7ug/L22.52069Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.72009,800B,4Cadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400610,0004Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.1203.1JCopper200.8ug/L20.964ND (4)UIron200.7ug/L23220033JLead200.8ug/L20.732ND (2)UND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.4 – MS and/or MSD did not meet laboratorycriteria, but sample concentration is fourtimes greater thanthe matrix spike amount, so control limits are not applicable.B – Analyte was found in the blank and sample.F – MS and/or MSD not within laboratory control limits.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-24Table A-8. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMagnesium200.7ug/L5054010,0003,500,000B,4Manganese200.7ug/L501350011,0004Mercury1631Eng/L102.415.0519Molybdenum200.7ug/L21.64039JNickel200.8ug/L20.8943.5JSelenium200.8ug/L20.6242,1004Silver200.8ug/L20.592ND (2)U,FSodium200.7ug/L504,600250,000490,0004Thallium200.8ug/L20.4722.9Tin200.7ug/L24.820014JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-25Table A-9. Duplicate of Effluent from FGD Wastewater Treatment System, Analytical Results,Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationClassicalsAmmonia350.1mg/L41.9420Nitrate Nitrite as N353.2mg/L200.382160Nitrogen, Total Kjeldahl351.2mg/L100.771070BBiochemical Oxygen Demand5210Bmg/L10.32.51.9JChemical Oxygen Demand410.4mg/L520100470Chloride300.0mg/L50131502,000Sulfate300.0mg/L5001202,50016,000Cyanide, Total4500 CN Emg/L10.020.10.16BTotal Dissolved Solids2540Cmg/L14710023,000Total Suspended Solids2540Dmg/L11.141.2JPhosphorus, Total365.1mg/L10.0050.050.018J,BTotal MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.7222.3Arsenic200.8ug/L21.244.9Barium200.7ug/L22.52069Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000BCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400660,000Chromium200.8ug/L23.38ND (8)UCobalt200.7ug/L21.1201.7JCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200100JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,500,000Manganese200.7ug/L501350011,000Mercury1631Eng/L5012.125.284.4ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-26Table A-9. Duplicate of Effluent from FGD Wastewater Treatment System, Analytical Results,Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationMolybdenum200.7ug/L21.64038JNickel200.8ug/L20.8942.7JSelenium200.8ug/L20.6242,100BSilver200.8ug/L20.592ND (2)USodium200.7ug/L504,600250,000510,000Thallium200.8ug/L20.4722.8Tin200.7ug/L24.82008.2JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)UDissolved MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.7222.5Arsenic200.8ug/L21.245.3Barium200.7ug/L22.52070Beryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720010,000BCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400650,000Chromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L11.9610ND (10)UCobalt200.7ug/L21.1202.2JCopper200.8ug/L20.964ND (4)UIron200.7ug/L23220051JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L5054010,0003,600,000BManganese200.7ug/L501350011,000Mercury1631Eng/L5012.125.226.5Molybdenum200.7ug/L21.64039JND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).



# A-27Table A-9. Duplicate of Effluent from FGD Wastewater Treatment System, Analytical Results,Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationNickel200.8ug/L20.8943.1JSelenium200.8ug/L20.6242,200Silver200.8ug/L20.592ND (2)USodium200.7ug/L504,600250,000540,000Thallium200.8ug/L20.4722.6Tin200.7ug/L24.82009.9JTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.710ND (10)UZinc200.8ug/L24.110ND (10)U

# a 

# Aluminum was detected in two equipment blanks for the 10-liter composite container at 2.53 ug/L and 4.71 ug/L.

ND – Not detected (number in parenthesis is the report limit).



# A-28 Table A-10. Bottle Blank and Equipment Blan k Analytical Data, Pleasant Prairie

Analyte Method Process Units Concentration

HDPE 250 ml Plastic Bottles – Bottle Blank (for metals and hexavalent chromium samples)

Aluminum EPA 1638 Total Recoverable ug/L ND (4.0)

Antimony EPA 1638 Total Recoverable ug/L ND (0.020)

Arsenic EPA 1638 Total Recoverable ug/L ND (0.15)

Barium EPA 1638 Total Recoverable ug/L ND (0.20)

Beryllium EPA 1638 Total Recoverable ug/L ND (0.060)

Boron EPA 1638 Total Recoverable ug/L ND (3.0)

Cadmium EPA 1638 Total Recoverable ug/L ND (0.020)

Calcium EPA 1638 Total Recoverable ug/L ND (40)

Chromium EPA 1638 Total Recoverable ug/L ND (0.10)

Cobalt EPA 1638 Total Recoverable ug/L ND (0.10)

Copper EPA 1638 Total Recoverable ug/L ND (0.10)

Iron EPA 1638 Total Recoverable ug/L ND (10)

Lead EPA 1638 Total Recoverable ug/L ND (0.040)

Magnesium EPA 1638 Total Recoverable ug/L ND (2.5)

Manganese EPA 1638 Total Recoverable ug/L ND (0.10)

Molybdenum EPA 1638 Total Recoverable ug/L ND (0.060)

Nickel EPA 1638 Total Recoverable ug/L ND (0.10)

Selenium EPA 1638 Total Recoverable ug/L ND (0.60)

Silver EPA 1638 Total Recoverable ug/L ND (0.020)

Sodium EPA 1638 Total Recoverable ug/L ND (20)

Thallium EPA 1638 Total Recoverable ug/L ND (0.0050)

Tin EPA 1638 Total Recoverable ug/L ND (0.10)

Titanium EPA 1638 Total Recoverable ug/L ND (0.50)

Vanadium EPA 1638 Total Recoverable ug/L ND (0.10)

Zinc EPA 1638 Total Recoverable ug/L ND (0.20)

HDPE 500 ml Plastic Bottles – Bottle Blank (for metals samples)

Aluminum EPA 1638 Total Recoverable ug/L ND (4.0)

Antimony EPA 1638 Total Recoverable ug/L ND (0.020)

Arsenic EPA 1638 Total Recoverable ug/L ND (0.15)

Barium EPA 1638 Total Recoverable ug/L ND (0.20)

Beryllium EPA 1638 Total Recoverable ug/L ND (0.060)

Boron EPA 1638 Total Recoverable ug/L ND (3.0)

Cadmium EPA 1638 Total Recoverable ug/L ND (0.020)

Calcium EPA 1638 Total Recoverable ug/L ND (40)

Chromium EPA 1638 Total Recoverable ug/L ND (0.10)

Cobalt EPA 1638 Total Recoverable ug/L ND (0.10)

Copper EPA 1638 Total Recoverable ug/L ND (0.10)

Iron EPA 1638 Total Recoverable ug/L ND (10)

# a 

# Aluminum was detected in two equipment blanks for the 10-liter composite container at 2.53 ug/L and 4.71 ug/L.

ND – Not detected (number in parenthesis is the report limit).



# A-29 Table A-10. Bottle Blank and Equipment Blan k Analytical Data, Pleasant Prairie

Analyte Method Process Units Concentration

Lead EPA 1638 Total Recoverable ug/L ND (0.040)

Magnesium EPA 1638 Total Recoverable ug/L ND (2.5)

Manganese EPA 1638 Total Recoverable ug/L ND (0.10)

Molybdenum EPA 1638 Total Recoverable ug/L ND (0.060)

Nickel EPA 1638 Total Recoverable ug/L ND (0.10)

Selenium EPA 1638 Total Recoverable ug/L ND (0.60)

Silver EPA 1638 Total Recoverable ug/L ND (0.020)

Sodium EPA 1638 Total Recoverable ug/L ND (20)

Thallium EPA 1638 Total Recoverable ug/L ND (0.0050)

Tin EPA 1638 Total Recoverable ug/L ND (0.10)

Titanium EPA 1638 Total Recoverable ug/L ND (0.50)

Vanadium EPA 1638 Total Recoverable ug/L ND (0.10)

Zinc EPA 1638 Total Recoverable ug/L ND (0.20)

125 ml Glass Bottles – Bottle Blank (for mercury composite samples)

Mercury EPA 1631E Total Recoverable ug/L ND (0.00050)

250 ml Glass Bottles – Bottle Bl ank (for mercury grab samples)

Mercury EPA 1631E Total Recoverable ug/L ND (0.00050)

LDPE 10 L Composite Bottles – Bottle Blank (sample composite bottle for dissolved/filtration pump-off)

Aluminum a 

# EPA 1638 Dissolved ug/L 4.71

Antimony EPA 1638 Dissolved ug/L ND (0.50)

Arsenic EPA 1638 Dissolved ug/L ND (0.50)

Barium EPA 1638 Dissolved ug/L ND (0.10)

Beryllium EPA 1638 Dissolved ug/L ND (0.10)

Cadmium EPA 1638 Dissolved ug/L ND (0.10)

Chromium EPA 1638 Dissolved ug/L ND (1.0)

Cobalt EPA 1638 Dissolved ug/L ND (0.10)

Copper EPA 1638 Dissolved ug/L ND (0.30)

Lead EPA 1638 Dissolved ug/L ND (0.050)

Manganese EPA 1638 Dissolved ug/L ND (0.50)

Molybdenum EPA 1638 Dissolved ug/L ND (0.50)

Nickel EPA 1638 Dissolved ug/L ND (0.50)

Selenium EPA 1638 Dissolved ug/L ND (2.0)

Silver EPA 1638 Dissolved ug/L ND (0.10)

Thallium EPA 1638 Dissolved ug/L ND (0.050)

Vanadium EPA 1638 Dissolved ug/L ND (1.0)

Zinc EPA 1638 Dissolved ug/L ND (0.50)

LDPE 20 L Composite Bottles – Bottle Blank (sample composite bottle for dissolved/filtration pump-off)

Aluminum EPA 1638 Dissolved ug/L ND (2.0)

Antimony EPA 1638 Dissolved ug/L ND (0.50)

# a 

# Aluminum was detected in two equipment blanks for the 10-liter composite container at 2.53 ug/L and 4.71 ug/L.

ND – Not detected (number in parenthesis is the report limit).



# A-30 Table A-10. Bottle Blank and Equipment Blan k Analytical Data, Pleasant Prairie

Analyte Method Process Units Concentration

Arsenic EPA 1638 Dissolved ug/L ND (0.50)

Barium EPA 1638 Dissolved ug/L ND (0.10)

Beryllium EPA 1638 Dissolved ug/L ND (0.10)

Cadmium EPA 1638 Dissolved ug/L ND (0.10)

Chromium EPA 1638 Dissolved ug/L ND (1.0)

Cobalt EPA 1638 Dissolved ug/L ND (0.10)

Copper EPA 1638 Dissolved ug/L ND (0.30)

Lead EPA 1638 Dissolved ug/L ND (0.050)

Manganese EPA 1638 Dissolved ug/L ND (0.50)

Molybdenum EPA 1638 Dissolved ug/L ND (0.50)

Nickel EPA 1638 Dissolved ug/L ND (0.50)

Selenium EPA 1638 Dissolved ug/L ND (2.0)

Silver EPA 1638 Dissolved ug/L ND (0.10)

Thallium EPA 1638 Dissolved ug/L ND (0.050)

Vanadium EPA 1638 Dissolved ug/L ND (1.0)

Zinc EPA 1638 Dissolved ug/L ND (0.50)

Sample Tap Tubing Set – Equipment Blank (seven feet of #73 silicone tubing, Y-sp litter, and two pieces of 5

feet of #24 silicone tubing for sample collect ion for mercury and metals from sample taps)

Aluminum EPA 1638 Total Recoverable ug/L ND (4.0)

Antimony EPA 1638 Total Recoverable ug/L ND (0.020)

Arsenic EPA 1638 Total Recoverable ug/L ND (0.15)

Barium EPA 1638 Total Recoverable ug/L ND (0.20)

Beryllium EPA 1638 Total Recoverable ug/L ND (0.060)

Boron EPA 1638 Total Recoverable ug/L ND (3.0)

Cadmium EPA 1638 Total Recoverable ug/L ND (0.020)

Calcium EPA 1638 Total Recoverable ug/L ND (40)

Chromium EPA 1638 Total Recoverable ug/L ND (0.10)

Cobalt EPA 1638 Total Recoverable ug/L ND (0.10)

Copper EPA 1638 Total Recoverable ug/L ND (0.10)

Iron EPA 1638 Total Recoverable ug/L ND (10)

Lead EPA 1638 Total Recoverable ug/L ND (0.040)

Magnesium EPA 1638 Total Recoverable ug/L ND (2.5)

Manganese EPA 1638 Total Recoverable ug/L ND (0.10)

Mercury EPA 1631E Total Recoverable ug/L ND (0.00050)

Molybdenum EPA 1638 Total Recoverable ug/L ND (0.060)

Nickel EPA 1638 Total Recoverable ug/L ND (0.10)

Selenium EPA 1638 Total Recoverable ug/L ND (0.60)

Silver EPA 1638 Total Recoverable ug/L ND (0.020)

Sodium EPA 1638 Total Recoverable ug/L ND (20)

# a 

# Aluminum was detected in two equipment blanks for the 10-liter composite container at 2.53 ug/L and 4.71 ug/L.

ND – Not detected (number in parenthesis is the report limit).



# A-31 Table A-10. Bottle Blank and Equipment Blan k Analytical Data, Pleasant Prairie

Analyte Method Process Units Concentration

Thallium EPA 1638 Total Recoverable ug/L ND (0.0050)

Tin EPA 1638 Total Recoverable ug/L ND (0.10)

Titanium EPA 1638 Total Recoverable ug/L ND (0.50)

Vanadium EPA 1638 Total Recoverable ug/L ND (0.10)

Zinc EPA 1638 Total Recoverable ug/L ND (0.20)

Pump-Off Tubing Set – Equipment Blan k (Three feet of Teflon® tubing, 10 feet of #73 silicone tubing, Ysplitter, and two pieces of 5 feet of #24 silicone tubing for total and di ssolved sample collection for metals)

Aluminum EPA 1638 Total Recoverable ug/L ND (4.0)

Antimony EPA 1638 Total Recoverable ug/L ND (0.020)

Arsenic EPA 1638 Total Recoverable ug/L ND (0.15)

Barium EPA 1638 Total Recoverable ug/L ND (0.20)

Beryllium EPA 1638 Total Recoverable ug/L ND (0.060)

Boron EPA 1638 Total Recoverable ug/L ND (3.0)

Cadmium EPA 1638 Total Recoverable ug/L ND (0.020)

Calcium EPA 1638 Total Recoverable ug/L ND (40)

Chromium EPA 1638 Total Recoverable ug/L ND (0.10)

Cobalt EPA 1638 Total Recoverable ug/L ND (0.10)

Copper EPA 1638 Total Recoverable ug/L ND (0.10)

Iron EPA 1638 Total Recoverable ug/L ND (10)

Lead EPA 1638 Total Recoverable ug/L ND (0.040)

Magnesium EPA 1638 Total Recoverable ug/L ND (2.5)

Manganese EPA 1638 Total Recoverable ug/L ND (0.10)

Mercury EPA 1631E Total Recoverable ug/L ND (0.00050)

Molybdenum EPA 1638 Total Recoverable ug/L ND (0.060)

Nickel EPA 1638 Total Recoverable ug/L ND (0.10)

Selenium EPA 1638 Total Recoverable ug/L ND (0.60)

Silver EPA 1638 Total Recoverable ug/L ND (0.020)

Sodium EPA 1638 Total Recoverable ug/L ND (20)

Thallium EPA 1638 Total Recoverable ug/L ND (0.0050)

Tin EPA 1638 Total Recoverable ug/L ND (0.10)

Titanium EPA 1638 Total Recoverable ug/L ND (0.50)

Vanadium EPA 1638 Total Recoverable ug/L ND (0.10)

Zinc EPA 1638 Total Recoverable ug/L ND (0.20)

T-Splitter Tubing Set – Equipment Blank (Ten feet of #7 3 silicone tubing, T-splitter, six feet of #73 silicone

tubing, and 15 feet of #73 silicone tubing for total and dissolved sample collect ion for metal composites)

Aluminum EPA 1638 Total Recoverable ug/L ND (4.0)

Antimony EPA 1638 Total Recoverable ug/L ND (0.020)

Arsenic EPA 1638 Total Recoverable ug/L ND (0.15)

Barium EPA 1638 Total Recoverable ug/L ND (0.20)

Beryllium EPA 1638 Total Recoverable ug/L ND (0.060)

# a 

# Aluminum was detected in two equipment blanks for the 10-liter composite container at 2.53 ug/L and 4.71 ug/L.

ND – Not detected (number in parenthesis is the report limit).



# A-32 Table A-10. Bottle Blank and Equipment Blan k Analytical Data, Pleasant Prairie

Analyte Method Process Units Concentration

Boron EPA 1638 Total Recoverable ug/L ND (3.0)

Cadmium EPA 1638 Total Recoverable ug/L ND (0.020)

Calcium EPA 1638 Total Recoverable ug/L ND (40)

Chromium EPA 1638 Total Recoverable ug/L ND (0.10)

Cobalt EPA 1638 Total Recoverable ug/L ND (0.10)

Copper EPA 1638 Total Recoverable ug/L ND (0.10)

Iron EPA 1638 Total Recoverable ug/L ND (10)

Lead EPA 1638 Total Recoverable ug/L ND (0.040)

Magnesium EPA 1638 Total Recoverable ug/L ND (2.5)

Manganese EPA 1638 Total Recoverable ug/L ND (0.10)

Mercury EPA 1631E Total Recoverable ug/L ND (0.00050)

Molybdenum EPA 1638 Total Recoverable ug/L ND (0.060)

Nickel EPA 1638 Total Recoverable ug/L ND (0.10)

Selenium EPA 1638 Total Recoverable ug/L ND (0.60)

Silver EPA 1638 Total Recoverable ug/L ND (0.020)

Sodium EPA 1638 Total Recoverable ug/L ND (20)

Thallium EPA 1638 Total Recoverable ug/L ND (0.0050)

Tin EPA 1638 Total Recoverable ug/L ND (0.10)

Titanium EPA 1638 Total Recoverable ug/L ND (0.50)

Vanadium EPA 1638 Total Recoverable ug/L ND (0.10)

Zinc EPA 1638 Total Recoverable ug/L ND (0.20)

# A-33ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-11. Influent to FGD Wastewater Treatment System Field Blank, Day 1 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationTotal MetalsAluminum200.7ug/L29.4200100J,BAntimony200.8ug/L20.722ND (2)UArsenic200.8ug/L21.24ND (4)UBarium200.7ug/L22.520ND (20)UBeryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720050J,BCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400ND (400)UChromium200.8ug/L23.38ND (8)U,^Cobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L23220046J,BLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L221400130J,BManganese200.7ug/L20.51202.4J,BMercury1631Eng/L10.240.5ND (0.5)UMolybdenum200.7ug/L21.6401.7JNickel200.8ug/L20.894ND (4)USelenium200.8ug/L20.6244.7Silver200.8ug/L20.592ND (2)USodium200.7ug/L218010,000230JThallium200.8ug/L20.472ND (2)UTin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.6201.9JVanadium200.8ug/L21.7102.8JZinc200.8ug/L24.110ND (10)U

# A-34ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-11. Influent to FGD Wastewater Treatment System Field Blank, Day 1 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationDissolved MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.722ND (2)UArsenic200.8ug/L21.24ND (4)UBarium200.7ug/L22.520ND (20)UBeryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720044JCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L26940087JChromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L10.392ND (2)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200ND (200)ULead200.8ug/L20.732ND (2)UMagnesium200.7ug/L221400240JManganese200.7ug/L20.51204.4JMolybdenum200.7ug/L21.640ND (40)UNickel200.8ug/L20.894ND (4)USelenium200.8ug/L20.6241.9JSilver200.8ug/L20.592ND (2)USodium200.7ug/L218010,000320JThallium200.8ug/L20.472ND (2)UTin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7104.1J,BZinc200.8ug/L24.110ND (10)U

# A-35ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-12. Effluent from FGD Wastewater Treatment SystemField Blank, Day 1 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationTotal MetalsAluminum200.7ug/L29.4200ND (200)UAntimony200.8ug/L20.722ND (2)UArsenic200.8ug/L21.24ND (4)UBarium200.7ug/L22.520ND (20)UBeryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720043J,BCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400100JChromium200.8ug/L23.38ND (8)U,^Cobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L232200ND (200)ULead200.8ug/L20.732ND (2)UMagnesium200.7ug/L221400250J,BManganese200.7ug/L20.51201J,BMercury1631Eng/L10.240.5ND (0.5)UMolybdenum200.7ug/L21.640ND (40)UNickel200.8ug/L20.8946.2Selenium200.8ug/L20.6241.5JSilver200.8ug/L20.592ND (2)USodium200.7ug/L218010,000ND (10,000)UThallium200.8ug/L20.472ND (2)UTin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7102.3J,BZinc200.8ug/L24.110ND (10)UDissolved MetalsAluminum200.7ug/L29.4200ND (200)U

# A-36ND – Not detected (number in parentheses is the quantitation limit).^ - ICV, CCV, ICB, CCB, ISA, ISB, CRI, or MRL standard: Instrument related QC exceeds the control limits.B – Analyte was found in the blank and sample.J – Result measured above the MDL, but less than the quantitation limit.U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-12. Effluent from FGD Wastewater Treatment SystemField Blank, Day 1 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationAntimony200.8ug/L20.722ND (2)UArsenic200.8ug/L21.24ND (4)UBarium200.7ug/L22.520ND (20)UBeryllium200.7ug/L20.712ND (2)UBoron200.7ug/L26.720045J,BCadmium200.8ug/L21.24ND (4)UCalcium200.7ug/L269400ND (400)UChromium200.8ug/L23.38ND (8)U,^Chromium (VI)218.6ug/L10.392ND (2)UCobalt200.7ug/L21.120ND (20)UCopper200.8ug/L20.964ND (4)UIron200.7ug/L23220087JLead200.8ug/L20.732ND (2)UMagnesium200.7ug/L221400110J,BManganese200.7ug/L20.51200.94J,BMolybdenum200.7ug/L21.640ND (40)UNickel200.8ug/L20.894ND (4)USelenium200.8ug/L20.6241.1J,BSilver200.8ug/L20.592ND (2)USodium200.7ug/L218010,000190JThallium200.8ug/L20.472ND (2)UTin200.7ug/L24.8200ND (200)UTitanium200.7ug/L21.620ND (20)UVanadium200.8ug/L21.7102.3J,BZinc200.8ug/L24.110ND (10)U

# A-37ND – Not detected (number in parentheses is the quantitation limit).U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-13. Effluent from FGD Wastewater Treatment SystemField Blank, Day 2 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationTotal MetalsMercury1631Eng/L10.240.5ND (0.5)U

# A-38J – Result measured above the MDL, but less than the quantitation limit.Table A-14. Effluent from FGD Wastewater Treatment SystemField Blank, Day 3 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationTotal MetalsMercury1631Eng/L10.240.50.42J

# A-39ND – Not detected (number in parentheses is the quantitation limit).U – Result below the MDL. (Number shown in parentheses is the quantitation limit).Table A-15. Effluent from FGD Wastewater Treatment SystemField Blank, Day 4 AnalyticalResults, Pleasant PrairieAnalyteMethodUnitDilutionFactorSampleSpecific MDLSample-Specific QLConcentrationTotal MetalsMercury1631Eng/L10.240.5ND (0.5)U

# Appendix B

DATA REVIEW NARRATIVES

# Appendix C

PICTURES FROM THE SAMPLING EPISODE

# C-1 Figure C-1. Sampler Working Inside a “Cleanbox”

# C-2 Figure C-2. Sample Tap and Tubing at the Influent to the FGD Wastewater Treatment

System

# C-3 Figure C-3. Sample Collection Set-Up at the Pump-Off Station

# C-4 Figure C-4. Sample Tap and Tubing at the Ef fluent from the FGD Wastewater Treatment

System