Sampling Episode Report 

RRI Energy’s 

Keystone Generating Station 

Shelocta, PA 

Sampling Episode 6563 

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. INTRODUCTION ................................................................................................................. 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. FACILITY OVERVIEW ........................................................................................................ 2-1

2.1 FGD Scrubber System ......................................................................................... 2-1

2.2 FGD Wastewater Treatment System ................................................................... 2-2

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

2.2.2 Sampling Points ....................................................................................... 2-4

3. SAMPLE COLLECTION ....................................................................................................... 3-1

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

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

3.1.2 Effluent from FGD Wastewater Treatment System ................................. 3-3

3.2 List of Analytes and Sample Preservation ........................................................... 3-6

3.3 Plant Operational Data ......................................................................................... 3-7

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

4. LABORATORY ANALYTICAL RESULTS AND DISCUSSION ................................................... 4-1

4.1 Measured and Calculated Results for Influent to FGD Wastewater Treatment 

System Samples ................................................................................................... 4-1

4.2 FGD Wastewater Treatment System ................................................................... 4-2

5. DATA QUALITY ................................................................................................................. 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 ....................................................................................... 5-3

6. REFERENCES ..................................................................................................................... 6-1

Appendix A: ANALYTICAL RESULTS

Appendix B: DATA REVIEW NARRATIVES 

Appendix C: PICTURES FROM THE SAMPLING EPISODE
ii

LIST OF TABLES 

Page 

Table 3-1. Sample Collection Information, Keystone ................................................................. 3-9

Table 3-2. Sample Collection at Keystone ................................................................................ 3-11

Table 3-3. Field Measurements, Keystone ................................................................................ 3-12

Table 3-4. Crosswalk of Sample Number to Sampling Point and Day, Keystone .................... 3-13

Table 3-5. Analytical Methods, Keystone ................................................................................. 3-14

Table 3-6. Summary of Sample Container and Planned Preservation, Keystone ...................... 3-15

Table 3-7. Sample Preservation Summary, Keystone ............................................................... 3-16

Table 3-8. Generating Unit Operating Characteristics during Sample Collection, Keystone ... 3-18

Table 3-9. FGD Scrubber System Operating Characteristics, Keystone ................................... 3-19

Table 3-10. Coal Usage during Sample Collection, Keystone .................................................. 3-20

Table 3-11. Scrubber Slurry Information during Sample Collection, Keystone Creek ............. 3-20

Table 3-12. FGD Wastewater Treatment System Operation Information, Keystone ................ 3-21

Table 4-1. Influent to FGD Wastewater Treatment System, Keystone ...................................... 4-4

Table 4-2. Effluent from FGD Wastewater Treatment System, Keystone ................................. 4-7

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

Treatment System, Keystone ......................................................................................... 4-10

Table 4-4. Metals Pollutants 4-Day Average Data Summary for FGD Wastewater 

Treatment System, Keystone ......................................................................................... 4-11

Table 5-1. Field Duplicate Results – Effluent from FGD Wastewater Treatment System, 

Keystone .......................................................................................................................... 5-5

Table A-1. Biphasic Sample Results for Classicals and Total metals, Influent to FGD 

Wastewater Treatment System, Day 1 Analytical Results, Keystone ............................ A-1

Table A-2. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD 

Wastewater Treatment System, Day 2 Analytical Results, Keystone ............................ A-3

Table A-3. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD 

Wastewater Treatment System, Day 3 Analytical Results, Keystone ............................ A-5
LIST OF TABLES (Continued) 

Page 

iii

Table A-4. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD 

Wastewater Treatment System, Day 4 Analytical Results, Keystone ............................ A-7

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, 

Keystone ......................................................................................................................... A-9

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, 

Keystone ....................................................................................................................... A-15

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, 

Keystone ....................................................................................................................... A-21

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, 

Keystone ....................................................................................................................... A-27

Table A-9. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, 

Keystone ....................................................................................................................... A-33

Table A-10. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, 

Keystone ....................................................................................................................... A-36

Table A-11. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, 

Keystone ....................................................................................................................... A-39

Table A-12. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, 

Keystone ....................................................................................................................... A-42

Table A-13. Duplicate of Effluent from Wastewater Treatment System, Day 2 Analytical 

Results, Keystone .......................................................................................................... A-45

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone ........................... A-48

Table A-15. Influent to FGD Wastewater Treatment System Field Blank, Day 1 Analytical 

Results, Keystone .......................................................................................................... A-53

Table A-16. Effluent from FGD Wastewater Treatment System Field Blank, Day 1 

Analytical Results, Keystone ........................................................................................ A-55

Table A-17. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, 

Keystone ....................................................................................................................... A-58

Table A-18. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, 

Keystone ....................................................................................................................... A-59

Table A-19. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, 

Keystone ....................................................................................................................... A-60
iv

LIST OF FIGURES 

Page 

Figure 2-1. Simplified Diagram of the FGD Wastewater Treatment System, Keystone ............ 2-6

Figure 2-2. Detailed Diagram of the FGD Wastewater Treatment System, Keystone ................ 2-7

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

Figure C-2. Sample Tap and Tubing at the Influent 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 Collection Set-Up at the Effluent from the FGD Wastewater Treatment 

System ..............................................................................................................................C-4
1-1

1. INTRODUCTION

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 generated by coal-fired steam electric power plants 

and evaluate treatment technologies and best management practices used to reduce pollutant 

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

place September 12-17, 2010, at RRI Energy’s Keystone Generating Station (Keystone), located 

in Shelocta, Pennsylvania (Sampling Episode 6563). The focus of Episode 6563 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 present in the wastewater discharges from steam 

electric power plants that substantially contribute to the toxic loadings for the industry. 

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

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

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

the untreated FGD wastewaters and effluent quality from technologies designed to treat the 

wastewater. 

1.2 Power Plant Site Selection

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

configurations and characteristics of the plants. 

Keystone was selected by EPA for sampling based on the following site characteristics: 

 The plant is a coal-fired power plant that burns eastern bituminous 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, 

— Lime addition (pH adjustment/metal hydroxide precipitation) 

— Organosulfide addition, 

— Ferric chloride addition, 

— Polymer addition, 

— Clarification, 

— Hydrochloric acid addition (pH adjustment), 

— Antiscalant addition, 

— Heat extraction (cooling), and 

— Filtration (sand filters and polishing filters); and 
1-2

 The plant operates selective catalytic reduction (SCR) systems on both generating 

units. 

1.3 Sampling Episode Overview

EPA and its technical contractor, Eastern Research Group, Inc. (ERG) conducted a oneday pre-sampling site visit at Keystone on February 1, 2010 as part of the rulemaking. The 

information collected during the pre-sampling site was used to create Sampling Plan, RRI 

Energy’s Keystone Generating Station (Sampling Plan) [1], which describes the sample 

collection procedures used during the sampling episode. 

On Sunday, September 12, 2010, EPA arrived at Keystone to meet with plant personnel, 

receive on-site safety training, review the sampling 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 (September 13–17, 2010). The following personnel participated in 

EPA’s sample collection activities: 

 Ron Jordan, EPA/EAD; 

 Elizabeth Sabol, ERG; 

 Becky Schwantes, ERG; 

 Steve Strackbein, ERG; 

 Kim Wagoner, ERG; and 

 Jessica Wolford, ERG. 

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

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

industry. During the sampling episode, UWAG acted as Keystone’s representative and collected 

samples on behalf of the plant. 
2-1

2. FACILITY OVERVIEW

Keystone operates two steam electric units and each has a coal-fired boiler. Units 1 and 2, 

which came on line in 1967 and 1968, respectively, each have a net capacity of 850 megawatts 

(MW) (900 MW gross capacity). Both generating units burn eastern bituminous coal. The 

Keystone plant and supporting facilities are located on approximately 1,000 acres in Shelocta, 

Pennsylvania. 

Keystone recently retrofitted both units with a wet FGD scrubber system to control the 

sulfur dioxide (SO2) releases from the plant. The Unit 1 FGD system was installed in September 

2009, and the Unit 2 FGD system was installed in November 2009. With the recent addition of 

the FGD scrubber systems, Keystone also installed an FGD wastewater treatment system to 

control the discharges of the wastewater generated during the operation of the FGD scrubbers. 

The FGD scrubber systems are discussed further in Section 2.1 and the FGD wastewater 

treatment system is discussed further in Section 2.2. 

In 2003, Keystone retrofitted Units 1 and 2 with selective catalytic reduction (SCR) 

systems to control nitrogen oxide (NOx) releases from the plant. In January 2009, Keystone 

began operating the SCR systems year-round. Keystone also uses low NOx burners on Units 1 

and 2, which were installed in 1994 and 1995 respectively, to control NOx releases from the 

plant. 

The electrostatic precipitators (ESPs) at Keystone are particulate control devices that 

remove the fly ash and other particulates from the flue gas. Keystone utilizes cold-side ESPs to 

remove the fly ash from both units. The ESPs are designed to remove 99.5 percent of the fly ash 

from the flue gas. The fly ash and other particulates are collected in hoppers and are 

pneumatically transferred to fly ash silos. 

Units 1 and 2 have the following configuration: 

 Boiler; 

 SCR system; 

 Air heater; 

 ESP; and 

 FGD scrubber system. 

2.1 FGD Scrubber System

Keystone operates two forced oxidation wet FGD scrubber systems (one per unit) to 

control the emission of sulfur dioxide from the unit. The plant uses limestone slurry as the 

sorbent for sulfur dioxide absorption. Limestone and service water are fed to on-site ball mills, 

which 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 for use in the FGD system. The 

underflow from the hydrocyclones is sent back to the ball mills for processing. The overflow 

from the hydrocyclones, which ranges from 25 to 35 percent solids (by weight), is transferred to 

the limestone slurry storage tank and then used as fresh limestone slurry in the absorber. 

The fresh limestone slurry is fed to the reaction tank of the FGD systems where the slurry 

is pumped to the various levels of the FGD scrubbers with the recycle pumps. Both absorbers 
2-2

have five spray levels, but the plant does not always operate all of them at the same time. The 

slurry is pressurized and sprayed downward into the scrubber vessel through spray nozzles. As 

the slurry falls downward and the flue gas flows counter-current to the slurry, the spray droplets 

of the limestone slurry contact the flue gas and absorb the SO2, which reacts with the limestone 

particles and produces calcium sulfite. The spray droplets flow downward until they settle on the 

tray, forming a layer of slurry that the flue gas must pass through to exit the FGD 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 it reaches the reaction tank. 

Keystone bubbles air through the reaction tank to oxidize the calcium sulfite to calcium sulfate 

(i.e., gypsum). 

Keystone intermittently blows down the gypsum slurry from the reaction tank to control 

the solids and chlorides concentration in each of the scrubbers. Blowdown from a scrubber 

occurs when the chlorides concentration is between 18,000 and 20,000 ppm and/or when the 

solids level is between 18 and 22 percent. Keystone transfers the blowdown from the scrubber 

absorber to the gypsum dewatering operations. 

The scrubber blowdown is pumped to the primary hydrocyclones where the solid gypsum 

is separated from the water by centrifugal force. The solid gypsum is forced outward to the walls 

of the hydrocyclones and falls downward, while the water exits the top of the hydrocyclones. 

The underflow from the primary hydrocyclones is transferred to the vacuum filter belts. The 

overflow from the primary hydrocyclones is monitored. If the chloride concentration in the 

primary hydrocyclone overflow is less than 16,000 ppm, then the waste stream is recycled back 

to the absorber. Otherwise, the overflow is transferred to a holding tank, and then pumped to the 

secondary hydrocyclones. The underflow from the secondary hydrocyclones is returned to the 

absorber. The overflow from the secondary hydrocyclones is sent to the purge tank and then 

pumped to the FGD wastewater treatment system. The secondary hydrocyclone overflow is 

never recycled back to the absorber. 

Keystone washes the gypsum sent to the vacuum filter belts with service water, as the 

gypsum is poured onto the belts. The vacuum filter belts dry the gypsum to a moisture content of 

less than 10 percent. The chloride concentration in the dry gypsum is less than 120 ppm. 

Keystone transfers the gypsum to an on-site ash landfill for disposal. Fly ash, bottom ash, and 

dewatered sludge from the FGD wastewater treatment plant are also sent to this landfill. The 

landfill is lined and has a leachate collection system. The leachate collection system produces a 

continuous waste stream. Although Keystone is attempting to market gypsum, the plant currently 

has no prospective clients. Keystone produces approximately 2,000 tons of gypsum every day.

2.2 FGD Wastewater Treatment System

The FGD wastewater treatment system is designed to receive intermittent transfers of 

FGD wastewater from the purge tank, which contains secondary hydrocyclone overflow. The 

daily (24 hour) average flow rate is 260 gallons per minute (gpm). The plant attempts to keep the 

flow rate constant by staggering the operation of the scrubbers. However, the flow rate can range 

from no flow (if neither scrubber is purging wastewater) up to 400-450 gpm if both scrubbers are 

operating and sending wastewater to treatment. The design maximum flow rate for the treatment 

system is 450 gpm. 
2-3

Keystone operates the FGD wastewater treatment system 24 hours per day, 7 days per 

week. The wastewater treatment system was installed to treat the FGD scrubber purge 

wastewater to meet the plant’s permit limits, which includes limits for total suspended solids 

(TSS), total selenium, oil and grease, BOD5, beryllium, copper, lead, mercury, silver, 

temperature, and pH. Keystone’s FGD wastewater treatment system contains the following 

treatment operations: 

 Equalization; 

 Lime addition (pH adjustment/metal hydroxide precipitation); 

 Organosulfide addition; 

 Ferric chloride addition; 

 Polymer addition; 

 Clarification; 

 Hydrochloric acid addition (pH adjustment); 

 Antiscalant addition; 

 Heat extraction (cooling); and 

 Filtration (sand filters and polishing filters). 

Figures 2-1 and 2-2 located at the end of this section, present process flow diagrams of 

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

episode. Figure 2-1 presents a simplified diagram of the FGD wastewater treatment system. 

Figure 2-2 presents a more complex diagram providing more detail on the chemical precipitation 

treatment operations. 

The secondary hydrocyclone overflow from the scrubbers is transferred to the purge tank 

and then sent to the equalization tank at the start of the wastewater treatment system. During the 

sampling episode, the FGD influent wastewater was found to contain 2.0 to 5.5 percent solids, 

had a pH between 6 and 7 S.U., and a temperature between 40 and 50 °C. The equalization tank 

also receives wastewater from the wastewater treatment sump and effluent from the FGD 

wastewater treatment system, which the plant recirculates to maintain a steady flow of 

wastewater through the system. 

2.2.1 Physical/Chemical Separation 

 From the equalization tank, the wastewater enters three reaction tanks in series. First, the 

wastewater flows into the desaturation tank, in which a lime slurry consisting of 10% lime is 

added to encourage metal hydroxide precipitation and to increase the pH to between 8.0 and 8.5 

S.U. The pH is optimal at this range because a higher pH would cause magnesium hydroxide to 

precipitate. From the desaturation tank, the wastewater flows to the heavy metals reaction tank 

where organosulfide (TMT-15) is added. The wastewater then flows to the flow splitter tank 

where ferric chloride is added. 

After the flow splitter tank, polymer is injected into the wastewater as it flows to the 

clarifiers. Keystone operates two solid contact clarifiers in parallel, which contain a sludge bed 

that facilitates removal of the solids in the wastewater. During the sampling episode, one of the 

two clarifiers (clarifier B) had been drained and was down for maintenance. On average, 

approximately 65 percent of the sludge from the clarifier is recycled back to the desaturation 

tank, while the remainder is transferred to a sludge tank and then pumped to a filter press for 

dewatering; however, the percent distribution varies throughout the day depending of the sludge 
2-4

level in the clarifier. The dewatered sludge is sent to the on-site ash landfill. The filter press 

filtrate is sent to the filtrate sump. All wastewater in the filtrate sump is recycled back to the 

equalization tank. 

The clarifier overflow is transferred to the heat exchanger feed tank. Hydrochloric acid 

and an antiscalant are added to the wastewater as it is transferred to the heat exchangers. The 

heat exchangers lower the temperature of the wastewater from 120°F to 85-90°F. [QUESTION 

FOR KEYSTONE: What are the materials of construction for the heat exchanger?] 

From the heat exchangers, the wastewater is transferred to three continuous backwash 

sand filters operating in parallel. The sand filters reduce the level of total suspended solids in the 

wastewater. During the sampling episode, one of the three sand filters (sand filter C) was not in 

operation. Backwash from the sand filters is transferred to the wastewater treatment sump. After 

the sand filters, the wastewater flows by gravity to the effluent tank. 

From the effluent tank, the wastewater is sent to the polishing filters, which contain a 

Teflon® media. The polishing filters are continuous backwash filters. Backwash from the filters 

is sent to the filtrate sump. Wastewater in the filtrate sump flows back to the equalization tank. 

The FGD wastewater treatment system was originally designed such that the plant could bypass 

the polishing filters if the TSS level after the sand filters met the plant’s permit limit. However, 

Keystone has found that using the polishing filters full time is necessary to keep the TSS 

concentration below their permit limit, which is 10 mg/L (monthly average) and 20 mg/L (daily 

maximum). Therefore, Keystone plans to use the polishing filters full time even though the 

design of their system allows them to skip this final step. The hydraulic residence time of the 

FGD wastewater treatment system ranges from 16 to 18 hours. 

During the sampling episode, the polishing filters were replaced beginning on Monday, 

September 13, 2010 at 1200. The work on the polishing filters (cartridge filters) was being done 

to address plugging of the filters due to biological growth that was occurring in the gravity sand 

filters (sand filters A and B). The problem was first identified on Monday, September 13, 2010, 

because of an increase in the differential pressure across the filters leading to increased backflush 

frequency. In order to eliminate the microbial growth in the sand filters, Keystone planned to 

replace the polishing cartridge filters for the second time, bring sand filter C back into service, 

and isolate and mechanically clean sand filters A and B, one at a time. During the sampling 

episode, plant personnel did not know if or how the effluent from the FGD wastewater treatment 

samples would be affected by the work. [QUESTION FOR KEYSTONE: How did this 

microbial growth affect the samples collected during the sampling episode? Has the plant 

compared the split sample results to other effluent sampling results before and after the sampling 

episode? If so, how do the sample results compare?] 

2.2.2 Sampling Points 

Figure 2-2 shows the sampling points for the Keystone sampling episode; they are 

summarized below: 

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

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

sample was collected prior to any chemical addition or mixing with recycle 

streams); and 
2-5

 A sample of the effluent from the FGD wastewater treatment system after the 

polishing filters, prior to discharge. 
2-6 

Figure 2-1. Simplified Diagram of the FGD Wastewater Treatment System, Keystone 
2-7 

Figure 2-2. Detailed Diagram of the FGD Wastewater Treatment System, Keystone 
3-1

3. SAMPLE COLLECTION

During the Keystone sampling episode, the sampling team followed the collection 

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

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

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

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

activities. 

3.1 Sampling Points, Sample Collection Methods, and Field Measurements

This section describes the sampling points, sample collection methods, and field 

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

and 2-2 of this report present flow diagrams of the plant’s wastewater treatment system, 

including sampling point locations. 

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

collection, and sample collection dates and times. Table 3-2 lists 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 the field measurement data collected from each 

sampling point. Table 3-4 presents a crosswalk between 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 Wastewater Treatment System: 

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

 SP-4 Influent to FGD Wastewater Treatment System (SP-1) Field Blank; and 

 SP-5 Effluent from FGD Wastewater Treatment System (SP-2) Field Blank. 

For all the sampling points, EPA collected split samples with Keystone’s representative 

by inserting a “Y” splitter into the sample tubing configuration at each sampling point to allow 

for split sample collection. EPA collected 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 Keystone’s representative collected duplicate samples, 

with one filling the bottle 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 that secures itself open with clips. The “cleanbox” is double-bagged 

with a clear inner bag, enclosed in a translucent outer bag. The “cleanbox” is handled using 

“clean hands / dirty hands” techniques, whereby the inner bag is handled only by the “clean 

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

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

tubing. The “cleanbox” minimizes potential atmospheric contamination during sample 

collection. Figure C-1, in Appendix C, is a picture 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 sealed 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 closed the sample bottle lid and sealed the inner 

bag as quickly as possible within 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 system (SP-1) was collected from a sample tap 

located on the wastewater piping downstream of the purge tank and upstream of the equalization 

tank. Figure 2-2 identifies the sampling location for SP-1. This sample was collected as a grab 

sample because, according to plant representatives, the wastewater characteristics of the purge to 

the wastewater treatment system are fairly consistent during the 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 wastewater treatment building (see Figure 2-2 for the sampling location for SP1). 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 samples 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 the silicone tubing was fitted with a “Y” splitter, with two 

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

picture of the sample tap at the influent to the FGD wastewater treatment system. The samplers 

attached the silicone tubing 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 valve 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. 

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 
3-3

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 sampling 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 containers for biochemical oxygen demand (BOD5), Group I, 

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

Table 3-6 for a list of Group I and Group II analytes. BOD5, Group I, Group II, and total cyanide 

samples were immediately placed on ice after sample collection. 

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

potassium-iodide starch test strips were used to measure for sulfides and oxidants, respectively. 

No sulfides or oxidants were detected during the 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 were 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 the silicone tubing, 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 “true” split samples with Keystone’s representatives. 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-liter container filled 

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

solids in the wastewater had been settling for approximately 80 to 100 minutes. Approximately 

1.0 - 1.5 liters1

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

collecting samples. 

Samplers collected the following dissolved samples 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 immediately placed on ice after sample collection. 

3.1.2 Effluent from FGD Wastewater Treatment System 

The effluent from the FGD wastewater treatment system (SP-2) was collected 

downstream of the polishing filters prior to discharge. Keystone installed a three-way splitter on 

the sample tap that had three separate taps to collect samples from the sampling point. The 

 

1

 On all sampling days, the filter/tubing was purged with 1.0 to 1.5 liters and there was no need to change the filter. 
3-4

sample tap was located inside the FGD wastewater treatment building (see Figure 2-2 for the 

sampling location for SP-2). Because the sampling point was located inside, there were no wind 

or rain concerns during the sample collection. 

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 compositors 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 compositor to collect sample volume for all classical 

analytes (i.e., BOD5, Group I, and Group II, excluding cyanide). In addition to collecting 

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

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

grab sample for cyanide during each compositing period. 

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

and dissolved metals by 200.7, and total and dissolved 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 two 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 configuration was set up such that one end was connected to the sample 

tap, one end was threaded through the automatic 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 sample tap, opened the valve, and allowed sample to 

flow through both sets of tubing before calibrating 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 projected 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 and flowed directly to 

the sump/drain. The automatic compositor pulled sample from the flowing stream as dictated by 

the sampling program and was capable of purging the 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 plastic bag was placed on top of the trash cans 

to minimize contamination. Figure C-4, in Appendix 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 grab sample every day, ERG collected field blanks 

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

procedures at the effluent from the FGD wastewater treatment system. 
3-5

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 tap for two minutes, the samples were collected directly from the 

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

directly from the tap, ERG was not able to collect split samples with Keystone’s representatives; 

therefore, duplicate samples were collected. ERG collected another set of total and dissolved 

mercury samples every six hours thereafter over the 24-hour period. The plastic shroud was 

replaced for each set of mercury grab samples. After collecting 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 system. 

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

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

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

split samples with Keystone’s representatives; therefore, duplicate samples were collected. The 

total cyanide sample was immediately preserved with sodium hydroxide to a pH >10 S.U. and 

placed on ice. Lead acetate test strips and potassium-iodide starch test strips were used to 

measure for sulfides and oxidants, respectively. No sulfides or oxidants were detected during this 

sampling episode at the effluent from the FGD wastewater treatment system. 

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

followed “clean hands / dirty hands” sampling techniques 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 volume on each day of sample collection. 

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

transferred the wastewater collected in the 20-liter containers into the individual sample 

containers at the pump-off area. For this sampling 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 within 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 containers. 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 the silicone tubing, 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 “true” split samples with Keystone’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 collecting any samples of the effluent from the FGD wastewater 

treatment system, the samplers collected a field blank sample (SP-5) for dissolved and total 
3-6

metals. See Section 5.2.3 for a description of the dissolved 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 samples 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 immediately 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 collected 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 previously filled 20-liter container. After the tubing was purged 

with 1-2 liters of sample, samplers filled containers for biochemical oxygen demand (BOD5), 

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

6 for a list of Group I and Group II analytes. BOD5, Group I, and Group II samples were 

immediately placed on ice after 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 sampling episode; however, the cyanide QC sample was 

collected on Day 4 because the QC sample collected on Day 3 was not preserved in the specified 

time limit. In addition, for all analytes, ERG collected a duplicate sample of the effluent from 

FGD wastewater treatment system (SP-3) on Day 2 of the sampling episode. 

3.2 List of Analytes and Sample Preservation

Samples collected at Keystone were analyzed for the following pollutants: 

 Classicals: 

— Biochemical oxygen demand, 5-day (BOD5), 

— 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, 
3-7

— 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, including contributions from coal, scrubber sorbents, 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 sampling team preserved samples in accordance with 

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

collection, the samplers placed the BOD5, Group I, Group II, dissolved hexavalent chromium, 

and total cyanide samples on ice to cool the samples to <6°C. The sampling team also placed the 

total and dissolved metals on ice to ensure all samples shipped together would stay cold. The 

total and dissolved mercury samples were put on ice because they were shipped with the 

hexavalent chromium samples. 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-preserved prior to extraction at the laboratory. The hexavalent chromium 

samples were preserved 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-color pH strips. Each total 

cyanide sample was tested for sulfides and oxidants immediately after sample collection. 

Because sulfides and oxidants were 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 sulfides and oxidants, the total cyanide samples were preserved with 

sodium hydroxide to a pH >10 S.U. and placed on ice. During the preservation of the cyanide 

QC sample at the effluent from the FGD wastewater treatment system (SP-2) collected on day 3, 

the samplers ran out of sodium hydroxide at the sample point. Because the sampling staff was 

unable to preserve the sample in time, the cyanide QC sample was re-collected on day 4. 

3.3 Plant Operational Data

During the EPA sampling episode, Keystone plant personnel provided the sampling team 

with operational data for each of the generating units and the FGD scrubber system, as well as 

operational and flow data for the FGD wastewater treatment system. Table 3-8 presents the unit 

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

Table 3-10 presents information on the coal burned during the sampling episode, Table 3-11 

presents information on the FGD scrubber slurry generation during the sampling episode, and 

Table 3-12 presents the FGD wastewater treatment system operating characteristics. 
3-8

3.4 Deviations from the Sampling and Analysis Plan

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

described below: 

 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 ammonium sulfate buffer solution was not 

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

sulfate buffer solution, followed by as much ammonium hydroxide as necessary 

to reach the desired pH. 

 Preservation of cyanide QC sample at SP-2 (Day 3): On day 3 of sample 

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

planned to preserve the cyanide QC sample to a pH greater than 10 S.U. using 

sodium hydroxide; however, the sampling team ran out of sodium hydroxide at 

the sample point and the sample was not preserved until one hour after collection. 

EPA re-collected the cyanide QC sample on day 4. 

 Cooling of total and dissolved metals sample at all sampling points: ERG had 

not planned to cool the total and dissolved metals samples on ice prior to the 

shipping the samples to the laboratory; however, because some of the metals 

samples were being shipped in the same coolers with the classicals samples, 

which are required to be kept at <6°C, ERG iced the metals sample to prevent 

them from raising the temperature in the cooler during shipment. 
3-9

Table 3-1. Sample Collection Information, Keystone

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 9/13/10 0935a and 1124b

Influent to FGD Wastewater 

Treatment System – Day 2 

Grab 9/14/10 0950a and 1123b

Influent to FGD Wastewater 

Treatment System – Day 3 

Grab 9/15/10 0910a and 1053b

Influent to FGD Wastewater 

Treatment System – Day 4 

Grab 9/16/10 0904a and 1053b

SP-2 Effluent from FGD Wastewater 

Treatment System – Day 1 

Composite 9/13/10 

 9/14/10

0700c

0753d

Grab 9/13/10 

 9/14/10 

0716e, 1316f , and 1915 g

0115 h 

Effluent from FGD Wastewater 

Treatment System – Day 2 

Composite 9/14/10 

9/15/10 

0700c

0748d 

Grab 9/14/10 

 9/15/10 

0715e, 1316f , and 1916 g

0114 h 

Effluent from FGD Wastewater 

Treatment System – Day 3 

Composite 9/15/10 

9/16/10 

0700c

0743d 

Grab 9/15/10 

9/16/10 

0718e, 1315f , and 1914 g

0115 h 

Effluent from FGD Wastewater 

Treatment System – Day 4 

Composite 9/16/10 

9/17/10 

0707c

0641d 

Grab 9/16/10 

9/17/10 

0720e, 1316f , and 1915 g

0115 h 

SP-3 Duplicate of Effluent from FGD 

Wastewater Treatment System – 

Day 2 

Composite 9/14/10 

 9/15/10 

0700c

0748d

Grab 9/14/10 

 9/15/10 

0716e, 1318f , and 1920 g

0116 h 

SP-4 Influent to FGD Wastewater 

Treatment System Field Blank 

Grab 9/13/10 0916 i and 1116j

SP-5 Effluent from FGD Wastewater 

Treatment System Field Blank – 

Day 1 

Composite 9/13/10 

9/14/10

0627k

0740l

Grab 9/13/10 0710m

Effluent from FGD Wastewater 

Treatment System Field Blank – 

Day 2 

Grab 9/14/10 0708m

Effluent from FGD Wastewater 

Treatment System Field Blank – 

Day 3 

Grab 9/15/10 0712m

Effluent from FGD Wastewater 

Treatment System Field Blank – 

Day 4 

Grab 9/16/10 0715m
3-10

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 (BOD5, Group I, Group II, and total cyanide). 

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 (BOD5, 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. 
3-11 

Table 3-2. Sample Collection at Keystone

Sampling 

Point 

Number Sampling 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

SP-1 Influent to the FGD Wastewater 

Treatment System 

4 4 4 4 4 4 4 4 

SP-2 Effluent from the FGD Wastewater 

Treatment System 

4+1QC 4+1QC 4+1QC 4+1QC 4+1QC 4+1QC 4+1QC 4+1QC 4+

SP-3 Field Duplicate of the Effluent from 

FGD Wastewater Treatment System 

1 1 1 1 1 1 1 1 

SP-4 Influent to the FGD Wastewater 

Treatment System Field Blank 

1 1 1 1 1 1 

SP-5 Effluent from the FGD Wastewater 

Treatment System Field Blank 

1 1 1 1 4 1 

Total Number of Samples 11+1QC 11+1QC 11+1QC 11+1QC 14+1QC 9+1QC 11+1QC 9+1QC 9+

a – 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 phosp
3-12 

Table 3-3. Field Measurements, Keystone 

Sampling 

Point 

Number Sampling Point Description Date Time 

Temperature (°C) 

pH 

(S.U.) 

Waste 

Stream 

Flow Rate 

(gpm) 

Thermometer Probe Meter a Strips 

SP-1 Influent to FGD Wastewater 

Treatment System – Day 1

9/13/2010 0954 46 42 6.2 7 490 

Influent to FGD Wastewater Treatment System – Day 2 

9/14/2010 1015 46 40.8 6.06 7 493 

Influent to FGD Wastewater Treatment System – Day 3 

9/15/2010 0924 39.5 41 6.19 6.5 490 

Influent to FGD Wastewater Treatment System – Day 4 

9/16/2010 0918 46 42 6.2 6.5 497 

SP-2 Effluent from FGD Wastewater 

Treatment System – Day 1

9/13/10 0719 28 26.3 6.75 7 247 9/13/10 1319 29 26.5 6.54 7 227 9/13/10 1923 29 27.7 6.56 7 230 9/14/10 0120 26 25.7 6.50 7 200 

Effluent from FGD Wastewater Treatment System – Day 2 

9/14/10 0721 28 25 6.35 7 199 

9/14/10 1320 28 27 6.40 7 173 9/14/10 1916 29 26.5 6.40 7 163 9/15/10 0115 28 25.8 6.47 7 170 

Effluent from FGD Wastewater Treatment System – Day 3 

9/15/10 0720 28 25.6 6.54 7 209

9/15/10 1315 28 26.1 6.67 6.5 1849/15/10 1914 29 27.8 6.50 7 2229/16/10 0115 28 26.7 6.57 7 208

Effluent from FGD Wastewater Treatment System – Day 4 

9/16/10 0723 29 26 6.50 7 168

9/16/10 1318 29 26.4 6.50 7 2059/16/10 1928 28 27.2 6.51 7 1549/17/10 0125 28 27.7 6.53 7.5 212

a The pH meter was calibrated prior to the sampling episode and once every day during the sampling episode using prepackaged buffer 

and 10.0. 
3-13 

Table 3-4. Crosswalk of Sample Number to Sampling Point and Day, Keystone

Sample Number Sample Point Sample Description 

71891 SP-1, Day 1 Influent to FGD Wastewater Treatment System - Day 1 

71892 SP-1, Day 2 Influent to FGD Wastewater Treatment System - Day 2 

71893 SP-1, Day 3 Influent to FGD Wastewater Treatment System - Day 3 

71894 SP-1, Day 4 Influent to FGD Wastewater Treatment System - Day 4 

71895 SP-2, Day 1 Effluent to FGD Wastewater Treatment System - Day 1 

71896 SP-2, Day 2 Effluent to FGD Wastewater Treatment System - Day 2 

71897 SP-2, Day 3 Effluent to FGD Wastewater Treatment System - Day 3 

71898 SP-2, Day 4 Effluent to FGD Wastewater Treatment System - Day 4 

71899 SP-3, Day 2 Duplicate of Effluent to FGD Wastewater Treatment System - Day 2 

71900 SP-4, Day 1 Influent to FGD Wastewater Treatment System Field Blank - Day 1 

71901 SP-5, Day 1 Effluent to FGD Wastewater Treatment System Field Blank - Day 1 

71902 SP-5, Day 2 Effluent to FGD Wastewater Treatment System Field Blank - Day 2 

71903 SP-5, Day 3 Effluent to FGD Wastewater Treatment System Field Blank - Day 3 

71904 SP-5, Day 4 Effluent to FGD Wastewater Treatment System Field Blank - Day 4 
3-14 

Table 3-5. Analytical Methods, Keystone

Parameter Method Number 

Maximum Holding 

Time a 

Classicals

Biochemical oxygen demand (BOD5) SM 5210 B 48 hours 

Chemical oxygen demand (COD) EPA 410.4 28 days 

Total suspended solids (TSS) SM 2540 D 7 days 

Total dissolved solids (TDS) SM 2540 C 7 days 

Sulfate EPA 300.0 28 days 

Chloride EPA 300.0 28 days 

Ammonia as nitrogen EPA 350.1 28 days 

Nitrate/nitrate as nitrogen EPA 353.2 28 days 

Total Kjeldahl nitrogen (TKN) EPA 351.2 28 days 

Total phosphorus EPA 365.1 28 days 

Total cyanide SM 4500 CN E 14 days 

Total and Dissolved Metals

Mercury EPA 1631E 90 days b

Hexavalent chromium (dissolved only) EPA 218.6 28 days 

Antimony, arsenic, cadmium, chromium, copper, lead, 

nickel, selenium, silver, thallium, and vanadium 

EPA 200.8 with 

collision cell 

6 months 

Aluminum, barium, beryllium, boron, calcium, cobalt, 

iron, magnesium, manganese, molybdenum, sodium, 

tin, titanium, and zinc 

EPA 200.7 6 months 

a

 The holding times are based on the on-site field preservation identified in Table 3-3. 

b

 The dissolved mercury samples must be filtered in the laboratory within 24 hours after sample collection. 

Additionally, the samples must be preserved by the laboratory within 48 hours after sample collection. 
3-15 

Table 3-6. Summary of Sample Container and Planned Preservation, Keystone 

Parameter 

Sample 

Container and 

Volume 

QC Sample 

Container and 

Volume On-Site Preservation 

Classicals 

BOD5 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 

H2SO4 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, 

NaAsO2 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 

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

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, nitrate/nitrite as nitrogen, TKN, and total phosphorus.
3-16 

Table 3-7. Sample Preservation Summary, Keystone

Sampling Point 

Number Analysis Date 

Chemical 

Added Initial pH Final pH 

Amount 

Added 

(drops) 

71891 Group II Volume 1 9/13/10 H2SO4 7 2 45 

71891 Group II Volume 2 9/13/10 H2SO4 7 2 45 

71891 Hexavalent Chromium 9/13/10 (NH4)2SO4

Buffer 

7 8 100 

NH4OH 9.3 23 

71900 Hexavalent Chromium Field 

Blank 

9/13/10 (NH4)2SO4

Buffer 

5.5 9 100 

NH4OH 9.3 3 

71891 Total Cyanide 9/13/10 NaOH 7 11 225 

71895 Total Cyanide 9/13/10 NaOH 7 11 55 

71892 Group II Volume 1 9/14/10 H2SO4 6.5 2 55 

71892 Group II Volume 2 9/14/10 H2SO4 6.5 2 55 

71895 Group II Volume 1 9/14/10 H2SO4 7 2 45 

71895 Group II Volume 2 9/14/10 H2SO4 7 2 45 

71892 Hexavalent Chromium 9/14/10 (NH4)2SO4

Buffer 

6.5 7.7 50 

NH4OH 9.3 25 

71895 Hexavalent Chromium 9/14/10 (NH4)2SO4

Buffer 

7 8.0 100 

NH4OH 9.3 18 

71901 Hexavalent Chromium Field 

Blank 

9/14/10 (NH4)2SO4

Buffer 

7 8.7 100 

NH4OH 9.3 4 

71892 Total Cyanide 9/14/10 NaOH 6.5 11 150 

71896 Total Cyanide 9/14/10 NaOH 7 10.5 70 

71899 Total Cyanide 9/14/10 NaOH 7 10.5 70 

71893 Group II Volume 1 9/15/10 H2SO4 7 2 55 

71893 Group II Volume 2 9/15/10 H2SO4 7 2 55 

71896 Group II Volume 1 9/15/10 H2SO4 6.5 2 45 

71896 Group II Volume 2 9/15/10 H2SO4 6.5 2 45 

71899 Group II Volume 1 9/15/10 H2SO4 6.5 2 45 

71899 Group II Volume 2 9/15/10 H2SO4 6.5 2 45 

71896 Hexavalent Chromium 9/15/10 (NH4)2SO4

Buffer 

6.5 8.1 100 

NH4OH 9.3 18 

71899 Hexavalent Chromium - 

Duplicate 

9/15/10 (NH4)2SO4

Buffer 

6.5 8.1 100 

NH4OH 9.3 18 

71893 Hexavalent Chromium 9/15/10 (NH4)2SO4

Buffer 

6.5 8.5 100 

NH4OH 9.3 25 
3-17 

Table 3-7. Sample Preservation Summary, Keystone

Sampling Point 

Number Analysis Date 

Chemical 

Added Initial pH Final pH 

Amount 

Added 

(drops) 

71893 Total Cyanide 9/15/10 NaOH 6.5 11 210 

71897 Total Cyanide 9/15/10 NaOH 7 11 70 

71897 Total Cyanide – QC b 9/15/10 NaOH 7 8 45 

71897 Total Cyanide – QC (2) b 9/15/10 NaOH 8 11 25 

71894 Group II Volume 1 9/16/10 H2SO4 6.5 2 55 

71894 Group II Volume 2 9/16/10 H2SO4 6.5 2 55 

71897 Group II Volume 1 9/16/10 H2SO4 7 2 45 

71897 Group II Volume 1 - QC 9/16/10 H2SO4 7 2 45 

71897 Group II Volume 2 9/16/10 H2SO4 7 2 45 

71897 Group II Volume 2 - QC 9/16/10 H2SO4 7 2 45 

71894 Hexavalent Chromium 9/16/10 (NH4)2SO4

Buffer 

7 7 20 

NH4OH 9.3 26 

71897 Hexavalent Chromium 9/16/10 (NH4)2SO4

Buffer 

7 8 100 

NH4OH 9.3 18 

71894 Total Cyanide 9/16/10 NaOH 6.5 11 210 

71898 Total Cyanide 9/16/10 NaOH 6.5 11 75 

71898 Total Cyanide-QC b 9/16/10 NaOH 6.5 11 75 

71898 Group II Volume 1 9/17/10 H2SO4 7 2 45 

71898 Group II Volume 2 9/17/10 H2SO4 7 2 45 

71898 Hexavalent Chromium 9/17/10 (NH4)2SO4

Buffer 

7 7.7 100 

NH4OH 9.3 18 a

 Preservation of this sample was stopped because the bottle became too full and additional preservative could not be 

added to the sample bottle. 

b The sampling team ran out of sodium hydroxide at SP-2 and was unable to fully preserve the cyanide QC sample 

(71897) until one hour after collection. The sampling team did note the second preservation to achieve a pH of 10. 

However, because the sample was not preserved until one hour after collection, EPA re-collected the cyanide QC 

sample at day 4; therefore, the Day 3 (71897) QC sample was not analyzed by the laboratory.
3-18 

Table 3-8. Generating Unit Operating Characteristics during Sample Collection, Keystone 

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 Supercritical 850 net 96.6% ON CS ESP 

2 Supercritical 850 net 96.6% ON CS ESP 

CS ESP – Cold-side electrostatic precipitator. 
3-19 

Table 3-9. FGD Scrubber System Operating Characteristics, Keystone 

Unit ID 

Wet FGD 

System (Yes/No) 

Type of 

Scrubber 

Forced 

Oxidation 

(Yes/No) Sorbent 

Additives (DBA, 

formic acid, 

etc.) 

FGD Make-up 

Water Source 

SO2 Rem

Percen

1 Yes Wet FGD Yes Lime slurry None Plum Creek 98 2 Yes Wet FGD Yes Lime slurry None Plum Creek 98 
3-20

Table 3-10. Coal Usage during Sample Collection, Keystone 

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 Bituminous 7627 Western PA 2.56 995 

2 Bituminous 7465 Western PA 2.56 995 

2 

1 Bituminous 7589 Western PA 2.63 1279 

2 Bituminous 7705 Western PA 2.63 1279 

3 

1 Bituminous 7538 Western PA 2.37 949 

2 Bituminous 7349 Western PA 2.37 949 

4 

1 Bituminous 7142 Western PA 2.59 939 

2 Bituminous 7430 Western PA 2.59 939 

Table 3-11. Scrubber Slurry Information during Sample Collection, Keystone Creek

Day of 

Sampling 

FGD 

System ID 

Associated 

Unit IDs 

Scrubber Slurry 

Blowdown Flow Rate 

Scrubber 

Slurry 

Percent 

Solids 

Time of 

Dewatering 

During 

Sampling Day a

Percent 

Filtrate 

Recycled 

Back to 

Scrubber 

Flow Rate 

(gpm) Duration 

1 

FGD-1 1 242.5 9hr 12min 1.5 - 2.0 

223 min 

100% 

FGD-2 2 242.5 9hr 12min 1.5 - 2.0 100% 

2 

FGD-1 1 243 12hr 18 min 1.5 - 2.0 

516 min 

100% 

FGD-2 2 243 12hr 18min 1.5 - 2.0 100% 

3 

FGD-1 1 244 7hr 0min 1.5 - 2.0 

410 min 

100% 

FGD-2 2 244 7hr 0min 1.5 - 2.0 100% 

4 

FGD-1 1 242.5 6hr 0min 1.5 - 2.0 

297 min 

100% 

FGD-2 2 242.5 6hr 0min 1.5 - 2.0 100% 

a

 – Time of dewatering during sampling day represents the total time the plant was dewatering for the day. The 

specific periods of time are not presented in this table. 
3-21 

Table 3-12. FGD Wastewater Treatment System Operation Information, Keystone

Day of 

Sampling 

Scrubber Purge Chemical Usage 

Flow Rate 

(gpm) 

Duration 

(hr) 

Lime 

(lbs/day) 

Ferric Chloride 

(lbs/day) 

Organosulfide: 

TMT-15 

(lbs/day) 

Polymer

Scaletrol P

9326 

(lbs/day

1 485 9hr 12min 6728a (3,500 mg/L) 815 a (55 ppm) 224 a (14 ppm) 19 (3 ppm) 2 486 12 hr 18 min 6728 a (3,500 mg/L) 815 a (55 ppm) 224 a (14 ppm) 19 (3 ppm) 3 488 7 hr 6728 a (3,500 mg/L) 815 a (55 ppm) 224 a (14 ppm) 19 (3 ppm) 4 485 1 hr 6725 a (3,500 mg/L) 815 a (55 ppm) 224 a (14 ppm) 19 (3 ppm) 

a – Estimated Values. 

Note: the values provided in parentheses are the setpoint for the chemical in the reaction tanks.
4-1 

4. LABORATORY ANALYTICAL RESULTS AND DISCUSSION

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. Section 4.1 discusses the methods used by the laboratories for the biphasic analysis of 

SP-1. Section 4.2 presents the laboratory analytical data for the influent to and effluent from the 

FGD wastewater treatment system. 

Appendix A provides all analytical results for all samples collected at Keystone, 

including all qualified results and all results that were measured above the method detection 

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

4.1 Measured and Calculated Results for Influent to FGD Wastewater Treatment 

System Samples

The samples of the influent to the FGD wastewater treatment system were expected to 

contain significant amounts of readily settleable solids, to a large degree consisting of gypsum, 

unreacted limestone, and fly ash. Because of this, EPA was concerned that there could be 

analytical interferences for the metals analyses, since the acid digestion procedures used may not 

be sufficiently rigorous for samples with high solids loads. Therefore, ERG directed its contract 

laboratories to separate the aqueous and solid phases of the sample prior to conducting certain 

analyses, where allowed by the analytical method and if necessary to obtain acceptable analytical 

results. This biphasic approach provides EPA with measured or calculated pollutant 

concentrations for the following phases of the sample: 

 Aqueous phase; 

 Solid phase; and 

 Total sample. 

The metals and classicals laboratory, TestAmerica Laboratories - Denver (TestAmerica), 

and the mercury laboratory, Frontier Global Sciences (Frontier), used two different approaches 

for the biphasic analysis. This section describes the approaches used by each laboratory and 

presents the results of the analyses. 

Metals and Classicals Analyses 

TestAmerica used EPA Methods 200.7 and 200.8 to analyze the wastewater samples for 

metals. Both EPA Methods 200.7 and 200.8 state, “Aqueous samples containing total suspended 

solids ≥1% (w/v) should be extracted as a solid type sample.” [3, 4] Because EPA expected the 

solids content to be greater than one percent, TestAmerica developed an approach for the 

analysis of the FGD influent samples that consisted of performing a pressure filtration to separate 

the solids from the sample and analyzing the solid and aqueous phases separately. TestAmerica 

also dried the solids prior to analysis, so the solid concentration is on a dry-weight basis. To 

calculate the total sample concentration from the solid and aqueous phase results, the laboratory 

also needed to measure the original sample volume, solid phase weight, and filtrate volume. EPA 

developed the following equation to calculate the individual metal total concentrations for the 

sample. 
4-2 

Sample

Filtrate Filtrate Solid Solid

V

(C V ) (C Wt ) Total SampleConcentration     (4-1) 

where: 

CFiltrate = concentration of the analyte in the aqueous phase of the sample; 

VFiltrate = volume of the filtrate; 

CSolid = concentration of the analyte in the solid phase of the sample; 

WtSolid = weight of the solids in the sample; and 

VSample = volume of the original sample. 

TestAmerica used the same approach for the seven classical pollutants that were analyzed 

as biphasic samples: ammonia as nitrogen, chloride, sulfate, nitrate/nitrite, total cyanide, total 

Kjeldahl nitrogen (TKN), and total phosphorus. 

Mercury Analyses 

Frontier used EPA Method 1631E to analyze the wastewater samples for mercury. EPA 

Method 1631E does not contain any language stating how wastewater samples with high solid 

concentrations should be analyzed; therefore, Frontier developed an approach for the analysis of 

the FGD influent samples that minimized potential contamination to the samples. Frontier’s 

approach consisted of using a centrifuge to separate the solids from the sample and analyzing the 

solid and aqueous phases separately. Frontier did not dry the solids prior to analysis, so the solid 

concentration is on a wet-weight basis. To calculate the total sample concentration from the 

solid and aqueous phase results, the laboratory also needed to measure the original sample 

volume, solid phase weight, and filtrate volume. EPA used Equation 4-1 to calculate the 

individual total mercury concentrations for the sample. 

Appendix Tables A-1 through A-4 present the results of the biphasic analysis for 

ammonia as nitrogen, nitrate/nitrite, chloride, sulfate, nitrate/nitrite, total cyanide, TKN, total 

phosphorus, total metals, and total mercury for each of the four days of sampling. Results are 

rounded to three significant figures. 

4.2 FGD Wastewater Treatment System

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 wastewater treatment system (SP-1), as well as the 

calculated 4-day average result for each analyte for the sampling point. The total metal results 

presented in Table 4-1 represent the calculated total result for all analytes for which biphasic 

separation was performed. Table 4-2 presents the analytical results for all classical and metal 

analytes 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 analytes for which EPA conducted 

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

sample above the method detection limit, the result 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. 
4-3 

For Table 4-2 (effluent from the FGD wastewater 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 average of the original and the duplicate sample results. Table 5-1 presents the 

analytical results for the original and duplicate 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 quantitation limit, then all results were averaged 

together; 

 If at least one result was above the quantitation 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 reported 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 detection limit, then the sample-specific 

quantitation limits for all results were averaged 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 for all classical analytes for the influent to 

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

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

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

(SP-1) and the effluent from the 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-13 present all the analytical results from the influent to 

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

system (SP-2), and the duplicate of the effluent from the FGD wastewater treatment system (SP3) sample analyses, including J-values. 
4-4 

Note: The total metals results and the results for certain classical analytes (i.e., ammonia as nitrogen, nitrate/nitrite, chloride, sulfate, nitrate/nitrite, totphosphorus) represent the total result that was calculated based on the results of the solid and aqueous phase of the samples. See Section 4.1 for more < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-1. Influent to FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Influent to FGD Wastewater Treatment System (SP

Day 1 Day 2 Day 3 D

Classicals Ammonia mg/L 350.1 13.3 14.1 13.3 11.8 Nitrate Nitrite as N mg/L 353.2 11.4 13.4 13.4 11.0 Nitrogen, Total Kjeldahl mg/L 351.2 57.2 54.7 51.5 49.6 Biochemical Oxygen Demand mg/L 5210B 10.0 S,Min 9.50 S,Min 13.0 S,Min 2.90 Chemical Oxygen Demand mg/L 410.4 1,400 420 360 450 Chloride mg/L 300.0, 9056 15,400 15,300 15,300 14,60Sulfate mg/L 300.0, 9056 1,920 2,020 2,040 1,950 Cyanide, Total mg/L 4500 CN E 0.341 0.194 0.280 0.283 Total Dissolved Solids mg/L 2540C 35,000 D,H,Est 35,000 H,Est 37,000 H,Est 35,00Total Suspended Solids mg/L 2540D 26,000 29,000 20,000 55,00Phosphorus, Total mg/L 365.1 1.12 11.0 1.06 0.198 Total Metals Aluminum ug/L 200.7, 6010B 1,000,000 871,000 938,000 922,00Antimony ug/L 200.8, 6020 44.9 29.6 38.7 39.6 Arsenic ug/L 200.8, 6020 3,080 2,470 2,720 2,560 Barium ug/L 200.7, 6010B 19,600 11,900 10,300 10,30Beryllium ug/L 200.7, 6010B NQ (85.4) NQ (71.6) NQ (73.8) NQ (70Boron ug/L 200.7, 6010B 411,000 391,000 403,000 394,00Cadmium ug/L 200.8, 6020 104 94.5 94.0 108 Calcium ug/L 200.7, 6010B 6,780,000 6,670,000 7,200,000 6,710,0Chromium ug/L 200.8, 6020 3,010 2,410 2,630 2,590 
4-5 

Note: The total metals results and the results for certain classical analytes (i.e., ammonia as nitrogen, nitrate/nitrite, chloride, sulfate, nitrate/nitrite, totphosphorus) represent the total result that was calculated based on the results of the solid and aqueous phase of the samples. See Section 4.1 for more < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-1. Influent to FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Influent to FGD Wastewater Treatment System (SP

Day 1 Day 2 Day 3 D

Cobalt ug/L 200.7, 6010B 968 891 913 861 Copper ug/L 200.8, 6020 2,070 1,720 1,820 3,280 Iron ug/L 200.7, 6010B 2,670,000 2,320,000 2,470,000 2,350,0Lead ug/L 200.8, 6020 1,140 904 1,000 981 Magnesium ug/L 200.7, 6010B 2,880,000 2,780,000 2,790,000 2,750,0Manganese ug/L 200.7, 6010B 486,000 459,000 454,000 442,00Mercury ng/L 

1631E, FGS069 533,000 515,000 559,000 622,00

Molybdenum ug/L 200.7, 6010B 568 465 500 506 Nickel ug/L 200.8, 6020 5,640 4,990 5,020 6,560 Selenium ug/L 200.8, 6020 4,200 3,740 4,380 4,000 Silver ug/L 200.8, 6020 NQ (8.55) NQ (7.12) NQ (7.83) 387 Sodium ug/L 200.7, 6010B 341,000 300,000 330,000 323,00Thallium ug/L 200.8, 6020 52.6 50.0 54.8 56.1 Tin ug/L 200.7, 6010B 

ND 

(1,860) 

ND 

(1,610) 

ND 

(1,600) 

ND 

(1,520

Titanium ug/L 200.7, 6010B 7,350 5,520 5,940 6,240 Vanadium ug/L 200.8, 6020 4,010 3,190 3,440 3,270 Zinc ug/L 200.7, 6010B 6,100 5,310 5,390 5,460 Dissolved Metals Aluminum ug/L 200.7 ND (200) ND (200) ND (200) ND (20Antimony ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) ND (2.0Arsenic ug/L 200.8 NQ (4.00) NQ (4.00) NQ (4.00) NQ (4.0Barium ug/L 200.7 400 380 370 360 
4-6 

Note: The total metals results and the results for certain classical analytes (i.e., ammonia as nitrogen, nitrate/nitrite, chloride, sulfate, nitrate/nitrite, totphosphorus) represent the total result that was calculated based on the results of the solid and aqueous phase of the samples. See Section 4.1 for more < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-1. Influent to FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Influent to FGD Wastewater Treatment System (SP

Day 1 Day 2 Day 3 D

Beryllium ug/L 200.7 ND (2.00) ND (2.00) ND (2.00) ND (2.0Boron ug/L 200.7 410,000 B 380,000 B 400,000 B 390,00Cadmium ug/L 200.8 93.0 84.0 77.0 86.0 Calcium ug/L 200.7 5,200,000 5,000,000 5,100,000 5,000,0Chromium ug/L 200.8 ND (8.00) ND (8.00) ND (8.00) ND (8.0Chromium (VI) ug/L 218.6 ND (10.0) ND (10.0) ND (10.0) ND (10Cobalt ug/L 200.7 500 480 470 450 Copper ug/L 200.8 NQ (4.00) NQ (4.00) NQ (4.00) NQ (4.0Iron ug/L 200.7 NQ (200) NQ (200) NQ (200) NQ (20Lead ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) ND (2.0Magnesium ug/L 200.7 2,900,000 2,800,000 2,800,000 2,800,0Manganese ug/L 200.7 470,000 440,000 450,000 440,00Mercury ng/L 1631E 1,410 899 251 1,100 Molybdenum ug/L 200.7 ND (40.0) ND (40.0) ND (40.0) ND (40Nickel ug/L 200.8 2,300 2,200 2,100 2,100 Selenium ug/L 200.8 1,100 B 1,200 B 1,200 B 1,400 Silver ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) ND (2.0Sodium ug/L 200.7 330,000 300,000 310,000 320,00Thallium ug/L 200.8 29.0 26.0 26.0 29.0 Tin ug/L 200.7 ND (200) ND (200) ND (200) ND (20Titanium ug/L 200.7 NQ (20.0) NQ (20.0) NQ (20.0) NQ (20Vanadium ug/L 200.8 NQ (10.0) ND (10.0) NQ (10.0) ND (10Zinc ug/L 200.7 82.0 71.0 69.0 61.0 
4-7 

Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for the analytical results for the < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. F – MS and/or MSD not within laboratory control limits. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-2. Effluent from FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Effluent from FGD Wastewater Treatment Syst

Day 1 Day 2 Day 3 D

Classicals Ammonia mg/L 350.1 13.0 12.0 11.0 12.0 Nitrate Nitrite as N mg/L 353.2 9.70 M,Min 9.35 9.30 9.40 Nitrogen, Total Kjeldahl mg/L 351.2 22.0 B 20.0 20.0 B,4 85.0 Biochemical Oxygen Demand mg/L 5210B 8.50 S,Min 7.00 6.80 S,Min 3.50 Chemical Oxygen Demand mg/L 410.4 470 275 380 F,Min 320 Chloride mg/L 300.0 15,000 15,000 14,000 13,000 Sulfate mg/L 300.0 1,500 1,350 1,400 1,400 Cyanide, Total mg/L 4500 CN E 0.120 B < 0.115 ND (0.100) 0.100 Total Dissolved Solids mg/L 2540C 35,000 B 30,500 29,000 29,000 Total Suspended Solids mg/L 2540D 4.80 32.0 7.20 D,Est 9.60 Phosphorus, Total mg/L 365.1 1.20 1.10 1.20 1.10 Total Metals Aluminum ug/L 200.7 ND (200) NQ (200) ND (200) ND (200Antimony ug/L 200.8 NQ (2.00) NQ (2.00) NQ (2.00) NQ (2.0Arsenic ug/L 200.8 NQ (4.00) < 3.05 NQ (4.00) NQ (4.0Barium ug/L 200.7 320 300 290 280 Beryllium ug/L 200.7 ND (2.00) ND (2.00) ND (2.00) ND (2.0Boron ug/L 200.7 300,000 B 300,000 280,000 B,4 290,000 Cadmium ug/L 200.8 NQ (4.00) NQ (4.00) NQ (4.00) NQ (4.0Calcium ug/L 200.7 6,300,000 6,100,000 5,600,000 4 5,600,00Chromium ug/L 200.8 ND (8.00) ND (8.00) ND (8.00) ND (8.0Cobalt ug/L 200.7 ND (20.0) ND (20.0) ND (20.0) ND (20.
4-8 

Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for the analytical results for the < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. F – MS and/or MSD not within laboratory control limits. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-2. Effluent from FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Effluent from FGD Wastewater Treatment Syst

Day 1 Day 2 Day 3 D

Copper ug/L 200.8 ND (4.00) ND (4.00) ND (4.00) ND (4.0Iron ug/L 200.7 NQ (200) B NQ (200) NQ (200) B NQ (200Lead ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) ND (2.0Magnesium ug/L 200.7 1,900,000 B 2,000,000 1,900,000 B,4 1,900,00Manganese ug/L 200.7 24,000 B 23,000 19,000 B,4 23,000 Mercury ng/L 1631E 119 108 78.6 31.2 Molybdenum ug/L 200.7 42.0 43.5 42.0 43.0 Nickel ug/L 200.8 6.80 7.50 8.60 7.00 Selenium ug/L 200.8 300 350 300 320 Silver ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) F ND (2.0Sodium ug/L 200.7 300,000 290,000 280,000 270,000 Thallium ug/L 200.8 11.0 10.5 9.70 11.0 Tin ug/L 200.7 ND (200) ND (200) ND (200) ND (200Titanium ug/L 200.7 NQ (20.0) NQ (20.0) NQ (20.0) NQ (20.Vanadium ug/L 200.8 NQ (10.0) B NQ (10.0) NQ (10.0) B NQ (10.Zinc ug/L 200.7 ND (40.0) ND (40.0) NQ (40.0) ND (40.Dissolved Metals Aluminum ug/L 200.7 ND (200) ND (200) NQ (200) ND (200Antimony ug/L 200.8 ND (2.00) NQ (2.00) NQ (2.00) NQ (5.0Arsenic ug/L 200.8 NQ (4.00) NQ (4.00) NQ (4.00) NQ (10.Barium ug/L 200.7 320 295 290 280 Beryllium ug/L 200.7 ND (2.00) ND (2.00) ND (2.00) ND (2.0Boron ug/L 200.7 300,000 B 295,000 280,000 B,4 290,000 
4-9 

Note: The Day 2 results represent the average of the original sample and the field duplicate (SP-3). See Section 5.2.4 for the analytical results for the < - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. F – MS and/or MSD not within laboratory control limits. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. 

Table 4-2. Effluent from FGD Wastewater Treatment System, Keystone 

Analyte Units Method 

Effluent from FGD Wastewater Treatment Syst

Day 1 Day 2 Day 3 D

Cadmium ug/L 200.8 NQ (4.00) NQ (4.00) NQ (4.00) NQ (4.0Calcium ug/L 200.7 6,300,000 6,000,000 5,700,000 4 5,800,00Chromium ug/L 200.8 ND (8.00) ND (8.00) ND (8.00) ND (8.0Chromium (VI) ug/L 218.6 ND (10.0) ND (10.0) ND (10.0) ND (10.Cobalt ug/L 200.7 ND (20.0) ND (20.0) ND (20.0) ND (20.Copper ug/L 200.8 ND (4.00) ND (4.00) ND (4.00) ND (4.0Iron ug/L 200.7 ND (200) ND (200) NQ (200) ND (200Lead ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) ND (2.0Magnesium ug/L 200.7 1,900,000 1,950,000 1,900,000 4 1,900,00Manganese ug/L 200.7 24,000 22,500 18,000 4 22,000 Mercury ng/L 1631E 15.3 15.3 10.2 28.5 Molybdenum ug/L 200.7 42.0 43.0 42.0 44.0 Nickel ug/L 200.8 6.10 6.60 5.40 7.00 Selenium ug/L 200.8 320 B 360 320 B,4 300 Silver ug/L 200.8 ND (2.00) ND (2.00) ND (2.00) F ND (2.0Sodium ug/L 200.7 300,000 290,000 280,000 280,000 Thallium ug/L 200.8 11.0 10.5 11.0 10.0 Tin ug/L 200.7 ND (200) ND (200) ND (200) ND (200Titanium ug/L 200.7 NQ (20.0) NQ (20.0) NQ (20.0) NQ (20.Vanadium ug/L 200.8 NQ (10.0) NQ (10.0) NQ (10.0) NQ (10.Zinc ug/L 200.7 ND (40.0) NQ (40.0) NQ (40.0) ND (40.
4-10 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

Table 4-3. Classical Pollutants 4-Day Average Data Summary for FGD Wastewater Treatment Sys

Analyte Units Method SP-1 

ClassicalsAmmonia mg/L 350.1 13.1 Nitrate Nitrite as N mg/L 353.2 12.3 Nitrogen, Total Kjeldahl mg/L 351.2 53.3 Biochemical Oxygen Demand mg/L 5210B 8.85 Chemical Oxygen Demand mg/L 410.4 658 Chloride mg/L 300.0, 9056 15,200 Sulfate mg/L 300.0, 9056 1,980 Cyanide, Total mg/L 4500 CN E 0.275 Total Dissolved Solids mg/L 2540C 35,500 Total Suspended Solids mg/L 2540D 32,500 Phosphorus, Total mg/L 365.1 3.34 
4-11 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

NA – Not analyzed. ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. 

Table 4-4. Metals Pollutants 4-Day Average Data Summary for FGD Wastewater Treatment Syst

Analyte Units Method

Influent to FGD

Wastewater Treatment

System (SP-1)

4-Day Average

Effluent from 

Wastewater T

System (S

4-Day Ave

Total Dissolved Total 

MetalsAluminum ug/L 200.7 933,000 ND (200) NQ (200) Antimony ug/L 200.8 38.2 ND (2.00) NQ (2.00) Arsenic ug/L 200.8 2,710 NQ (4.00) < 2.26 Barium ug/L 200.7 13,000 378 298 Beryllium ug/L 200.7 NQ (75.3) ND (2.00) ND (2.00) Boron ug/L 200.7 400,000 395,000 293,000 Cadmium ug/L 200.8 100 85.0 NQ (4.00) Calcium ug/L 200.7 6,840,000 5,080,000 5,900,000 Chromium ug/L 200.8 2,660 ND (8.00) ND (8.00) Chromium (VI) ug/L 218.6 NA ND (10.0) NA Cobalt ug/L 200.7 908 475 ND (20.0) Copper ug/L 200.8 2,220 NQ (4.00) ND (4.00) Iron ug/L 200.7 2,450,000 NQ (200) NQ (200) Lead ug/L 200.8 1,010 ND (2.00) ND (2.00) Magnesium ug/L 200.7 2,800,000 2,830,000 1,930,000 Manganese ug/L 200.7 460,000 450,000 22,300 Mercury ng/L 1631E 557,000 915 84.1 Molybdenum ug/L 200.7 510 ND (40.0) 42.6 Nickel ug/L 200.8 5,550 2,180 7.48 Selenium ug/L 200.8 4,080 1,230 318 Silver ug/L 200.8 < 99.7 ND (2.00) ND (2.00) Sodium ug/L 200.7 324,000 315,000 285,000 Thallium ug/L 200.8 53.4 27.5 10.6 
4-12 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the qu

NA – Not analyzed. ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. 

Table 4-4. Metals Pollutants 4-Day Average Data Summary for FGD Wastewater Treatment Syst

Analyte Units Method

Influent to FGD

Wastewater Treatment

System (SP-1)

4-Day Average

Effluent from 

Wastewater T

System (S

4-Day Ave

Total Dissolved Total 

Tin ug/L 200.7 ND (1,650) ND (200) ND (200) Titanium ug/L 200.7 6,260 NQ (20.0) NQ (20.0) Vanadium ug/L 200.8 3,480 NQ (10.0) NQ (10.0) Zinc ug/L 200.7 5,570 70.8 NQ (40.0) 
5-1

5. DATA QUALITY

Quality assurance/quality control (QA/QC) procedures applicable to the Keystone 

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

Rulemaking (QAPP) [2]. This section describes the QC procedures 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 laboratories for the analysis of samples collected 

during this episode. ERG verified that the performance of the laboratories selected was 

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

prepared written data review narratives describing any qualifications of the analytical data from 

this episode. The data review narratives 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 Sampling Plan discusses field QC specifications. 

5.2.1 Bottle Blanks 

ERG collects bottle blanks to evaluate possible 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 precleaned bottles, Frontier Global Sciences. 

Frontier Global Sciences collected the bottle blanks for the metals sample bottles by 

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

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

Frontier Global Sciences collected the bottle blanks for the mercury sample bottles by 

filling the precleaned bottle with reagent water, preserving the sample with bromine 

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

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

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

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

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

ASTM Type 1 water. Albion Environmental then 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 blanks, 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 used for the sample analyses (i.e., 200 ug/L); 

therefore, this contamination did not affect the results of the sampling episode. Appendix Table 
5-2

A-14 presents all of the analytical results from the bottle blank analyses 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 (as described in Section 

5.2.3) include the sampling equipment and therefore would identify whether the sampling 

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

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

precleaned equipment supplied for the episode. 

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

fabricated tubing sets by pumping reagent water 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 equipment blanks, indicating that there was no 

contamination from the sampling equipment. Appendix Table A-14 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, sampling 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 samples2

. 

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

for the influent to the FGD wastewater treatment system (SP-6) were collected by pouring 

ASTM Type 1 water through a precleaned funnel attached to the silicone 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 filling 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 Keystone’s representative, using the same procedure discussed in the 

sample collection description (Section 3.1). 

 

2 EPA did not collect a dissolved mercury field blank sample 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 blank for the dissolved mercury sample. Mercury was detected at 

a concentration of 0.46 ng/L in the filtration blank performed for the fourth day of samples, which includes the 

influent to the FGD wastewater treatment system (day 2), the third and fourth grab sample for the effluent from the 

FGD wastewater treatment system (day 3), and the first and second grab samples for the effluent from the FGD 

wastewater treatment system (day 4). Mercury was not detected above the method detection limit (0.24 ng/L) in the 

filtration blanks performed for the first, second, third, or fifth day of samples.
5-3

The dissolved metals by 200.8, dissolved metals by 200.7, and dissolved hexavalent 

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

were collected by pouring ASTM Type 1 water through the funnel and tubing and into a 10-liter 

composite container. After approximately 110 minutes, the sampling team began pumping off 

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

the tubing was purged with approximately one liter of blank water. The sample bottles were 

placed in a “cleanbox” and the ASTM Type 1 water was pumped through the tubing, capsule 

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

“true” split samples with Keystone’s representative, using the 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 the three taps on the sample tap splitter with a 

clear plastic bag. Before purging 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 system (SP-5) were collected by filling a 20-liter 

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

composite container was used with a pump to fill 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 other 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. The vented cap used for the field 

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

After 24 hours, the ASTM Type 1 water in the 20-liter field blank 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 pumped through the tubing and “Y” splitter, and 

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

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

description (Section 3.1). Prior to filling the sample bottles, 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. 

No metals were detected in the field blank samples above the quantitation limit, 

indicating that there was no contamination from the sample collection procedures. Appendix 

Tables A-15 through A-19 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). 

5.2.4 Field Duplicates 

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

precision for the episode. Field duplicate samples are separate samples collected from the same 
5-4

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

is stored and analyzed independently. The RPD between 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

S D

S D

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 duplicate samples for the effluent from the 

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

samples were analyzed for all analytes. Table 5-1 presents analytical results and the RPD for SP3. Results are rounded to three significant digits. Appendix Tables A-10 and A-13 present all the 

analytical results for the effluent from the FGD wastewater treatment system (SP-2) Day 2 and 

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

including all qualified results and all results that were measured above the method detection 

limit, but below the quantitation limit (i.e., J-values). 
5-5 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quNC – Not calculated. ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. Min – Minimum value. S – Seed correction blank recovery low. 

Table 5-1. Field Duplicate Results – Effluent from FGD Wastewater Treatment System, Ke

Analyte Method Units

Original Effluent from 

FGD Wastewater 

Treatment System, Day 2 

Concentration (SP-2) 

Duplicate Effluent from 

FGD Wastewater 

Treatment System 

Concentration (SP-4) 

A

R

ClassicalsAmmonia 350.1 mg/L 12.0 12.0 Nitrate Nitrite as N 353.2 mg/L 9.40 9.30 Nitrogen, Total Kjeldahl 351.2 mg/L 19.0 B 21.0 B Biochemical Oxygen Demand 5210B mg/L 7.10 S,Min 6.90 S,Min Chemical Oxygen Demand 410.4 mg/L 310 240 Chloride 300.0 mg/L 15,000 15,000 Sulfate 300.0 mg/L 1,400 1,300 Cyanide, Total 4500 CN E mg/L NQ (0.100) 0.180 < Total Dissolved Solids 2540C mg/L 31,000 30,000 Total Suspended Solids 2540D mg/L 10.0 54.0 Phosphorus, Total 365.1 mg/L 1.10 1.10 Total MetalsAluminum 200.7 ug/L NQ (200) B ND (200) NAntimony 200.8 ug/L ND (2.00) NQ (2.00) NArsenic 200.8 ug/L 4.10 NQ (4.00) Barium 200.7 ug/L 300 300 Beryllium 200.7 ug/L ND (2.00) ND (2.00) NBoron 200.7 ug/L 290,000 B 310,000 B 3Cadmium 200.8 ug/L NQ (4.00) NQ (4.00) NCalcium 200.7 ug/L 6,000,000 6,200,000 6,Chromium 200.8 ug/L ND (8.00) ND (8.00) N
5-6 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quNC – Not calculated. ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. Min – Minimum value. S – Seed correction blank recovery low. 

Table 5-1. Field Duplicate Results – Effluent from FGD Wastewater Treatment System, Ke

Analyte Method Units

Original Effluent from 

FGD Wastewater 

Treatment System, Day 2 

Concentration (SP-2) 

Duplicate Effluent from 

FGD Wastewater 

Treatment System 

Concentration (SP-4) 

A

R

Cobalt 200.7 ug/L ND (20.0) ND (20.0) NCopper 200.8 ug/L ND (4.00) ND (4.00) NIron 200.7 ug/L NQ (200) B NQ (200) B NLead 200.8 ug/L ND (2.00) ND (2.00) NMagnesium 200.7 ug/L 2,000,000 B 2,000,000 B 2,Manganese 200.7 ug/L 23,000 B 23,000 B Mercury 1631E ng/L 110 105 Molybdenum 200.7 ug/L 44.0 43.0 Nickel 200.8 ug/L 7.50 7.50 Selenium 200.8 ug/L 350 350 Silver 200.8 ug/L ND (2.00) ND (2.00) NSodium 200.7 ug/L 290,000 290,000 2Thallium 200.8 ug/L 10.0 11.0 Tin 200.7 ug/L ND (200) ND (200) NTitanium 200.7 ug/L NQ (20.0) NQ (20.0) NVanadium 200.8 ug/L NQ (10.0) B NQ (10.0) B NZinc 200.7 ug/L ND (40.0) ND (40.0) NDissolved MetalsAluminum 200.7 ug/L ND (200) ND (200) NAntimony 200.8 ug/L NQ (2.00) ND (2.00) NArsenic 200.8 ug/L NQ (4.00) NQ (4.00) NBarium 200.7 ug/L 300 290 Beryllium 200.7 ug/L ND (2.00) ND (2.00) NBoron 200.7 ug/L 300,000 B 290,000 B 2
5-7 

< - Average result includes at least one value measured below the quantitation limit. (Calculation uses 1⁄2 the quantitation limit for values below the quNC – Not calculated. ND – Not detected (number in parentheses is the quantitation limit). NQ – Analyte was measured above the method detection limit, but below the quantitation limit (number shown in parentheses is the quantitation limit

presented 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 

value. B – Analyte was found in the blank and sample. Min – Minimum value. S – Seed correction blank recovery low. 

Table 5-1. Field Duplicate Results – Effluent from FGD Wastewater Treatment System, Ke

Analyte Method Units

Original Effluent from 

FGD Wastewater 

Treatment System, Day 2 

Concentration (SP-2) 

Duplicate Effluent from 

FGD Wastewater 

Treatment System 

Concentration (SP-4) 

A

R

Cadmium 200.8 ug/L NQ (4.00) NQ (4.00) NCalcium 200.7 ug/L 6,000,000 6,000,000 6,Chromium 200.8 ug/L ND (8.00) ND (8.00) NChromium (VI) 218.6 ug/L ND (10.0) ND (10.0) NCobalt 200.7 ug/L ND (20.0) ND (20.0) NCopper 200.8 ug/L ND (4.00) ND (4.00) NIron 200.7 ug/L ND (200) ND (200) NLead 200.8 ug/L ND (2.00) ND (2.00) NMagnesium 200.7 ug/L 2,000,000 1,900,000 1,Manganese 200.7 ug/L 23,000 22,000 Mercury 1631E ng/L 16.2 14.3 Molybdenum 200.7 ug/L 43.0 43.0 Nickel 200.8 ug/L 6.80 6.40 Selenium 200.8 ug/L 370 B 350 B Silver 200.8 ug/L ND (2.00) ND (2.00) NSodium 200.7 ug/L 290,000 290,000 2Thallium 200.8 ug/L 10.0 11.0 Tin 200.7 ug/L ND (200) ND (200) NTitanium 200.7 ug/L NQ (20.0) NQ (20.0) NVanadium 200.8 ug/L NQ (10.0) NQ (10.0) NZinc 200.7 ug/L ND (40.0) NQ (40.0) N
6-1

6. REFERENCES

1. Eastern Research Group, Inc., 2010. Sampling Plan, RRI Energy’s Keystone Generating 

Station. September 3. DCN SE00504. 

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

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

3. U.S. EPA. 2001. Method 200.7: Determination of Metals and Trace Elements in Water 

and Wastes by Inductively Coupled Plasma – Atomic Emission Spectrometry. Revision 

4.4. 

4. U.S. EPA. 1994. Method 200.7: Determination of Trace Elements in Waters and Wastes 

by Inductively Coupled Plasma - Mass Spectrometry. Revision 5.4. 

 

 
Appendix A 

ANALYTICAL RESULTS 
A-1 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-1. Biphasic Sample Results for Classicals and Total metals, Influent to FGD Wastewater 

System, Day 1 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Ca

S

ClassicalsAmmonia 13 P,Est 34 P,Est Nitrate Nitrite as N 12 P,Est 6.6 J,P Nitrogen, Total Kjeldahl 29 B,L,P,Est 900 P,Est Chloride 16,000 13,000 Sulfate 1,300 21,000 Cyanide, Total 0.36 H,P,Est 0.15 J,H,P Phosphorus, Total 0.016 J,P 33 P,Est Total MetalsAluminum ND (200) U,^ 30,000 Antimony 1.6 J 1.3 Arsenic 3.5 J 92 Barium 270 580 Beryllium ND (2) U 2.2 J Boron 410,000 B 830 Cadmium 86 0.7 Calcium 5,000,000 63,000 Chromium ND (8) U 90 B Cobalt 500 15 Copper 32 61 Iron ND (200) U 80,000 Lead 7.5 34 Magnesium 2,900,000 5,200 Manganese 470,000 1,400 
A-2 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-1. Biphasic Sample Results for Classicals and Total metals, Influent to FGD Wastewater 

System, Day 1 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Ca

S

Mercury 2,550 17,500 Molybdenum ND (40) U 17 Nickel 2,100 110 B Selenium 1,100 95 Silver ND (2) U 0.23 Sodium 340,000 710 J Thallium 17 1.1 Tin ND (200) U ND (50) U Titanium ND (20) U 220 Vanadium ND (10) U 120 Zinc 93 180 
A-3 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-2. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Wastewater 

System, Day 2 Analytical Results, Keystone 

Analyte

Aqueous Phase Result 

(mg/L)

Solid Phase Result

(mg/kg)

Calc

Sample 

ClassicalsAmmonia 14 P,Est 29 P,Est Nitrate Nitrite as N 14 P,Est 5 J,P Nitrogen, Total Kjeldahl 32 B,L,P,Est 840 P,Est Chloride 16,000 4,100 Sulfate 1,300 27,000 Cyanide, Total 0.2 H,P,Est 0.15 J,H,P Phosphorus, Total ND (0.05) U,P 380 P,Est Total MetalsAluminum ND (200) U 30,000 Antimony 1.2 J 0.98 Arsenic 2.2 J 85 Barium 270 400 Beryllium ND (2) U 2.1 J Boron 390,000 B 730 Cadmium 77 0.74 Calcium 4,800,000 73,000 6Chromium ND (8) U 83 B Cobalt 480 15 Copper 7.1 59 Iron 47 J 80,000 2Lead 3.5 31 Magnesium 2,800,000 4,300 2Manganese 450,000 1,100 Mercury 3,830 17,800 Molybdenum ND (40) U 16 
A-4 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-2. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Wastewater 

System, Day 2 Analytical Results, Keystone 

Analyte

Aqueous Phase Result 

(mg/L)

Solid Phase Result

(mg/kg)

Calc

Sample 

Nickel 2,200 100 B Selenium 1,000 96 Silver ND (2) U 0.2 Sodium 300,000 550 J Thallium 16 1.2 Tin ND (200) U ND (49) U NTitanium ND (20) U 190 Vanadium ND (10) U 110 Zinc 88 180 
A-5 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-3. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Wastewate

System, Day 3 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Calculate

Sample Resu

ClassicalsAmmonia 13 P,Est 32 P,Est 13.Nitrate Nitrite as N 14 P,Est 4.3 J,P 13.Nitrogen, Total Kjeldahl 31 B,L,P,Est 710 P,Est 51.Chloride 16,000 4,500 15,3Sulfate 1,300 26,000 2,04Cyanide, Total 0.29 H,P,Est 0.19 J,H,P 0.2Phosphorus, Total ND (0.05) U,P 34 P,Est 1.0Total MetalsAluminum ND (200) U,^ 30,000 938,0Antimony 1.3 J 1.2 38.Arsenic 1.8 J 87 2,72Barium 280 320 10,3Beryllium ND (2) U 2.2 J 68.Boron 400,000 B 780 403,0Cadmium 73 0.8 94Calcium 5,000,000 79,000 7,200,Chromium ND (8) U 84 B 2,63Cobalt 470 15 913Copper 9.8 58 1,82Iron ND (200) U 79,000 2,470,Lead ND (2) U 32 1,00Magnesium 2,800,000 4,600 2,790,Manganese 440,000 1,200 454,0Mercury 3,510 17,500 559,0
A-6 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-3. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Wastewate

System, Day 3 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Calculate

Sample Resu

Molybdenum ND (40) U 16 500Nickel 2,000 100 B 5,02Selenium 1,000 110 4,38Silver ND (2) U 0.19 5.9Sodium 330,000 570 J 330,0Thallium 15 1.3 54.Tin ND (200) U ND (45) U ND (1,Titanium ND (20) U 190 5,94Vanadium ND (10) U 110 3,44Zinc 84 170 5,39
A-7 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-4. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Waste

Treatment System, Day 4 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Calculated 

Sample Resu

ClassicalsAmmonia 12 P,Est 32 P,Est 11.8Nitrate Nitrite as N 12 P,Est 5.1 J,P 11Nitrogen, Total Kjeldahl 26 B,L,P,Est 880 P,Est 49.6Chloride 16,000 4,900 14,60Sulfate 1,300 26,000 1,95Cyanide, Total 0.31 H,P,Est 0.12 J,H,P 0.28Phosphorus, Total 0.005 J,P 6.5 P,Est 0.19Total MetalsAluminum 15 J,^ 31,000 922,0Antimony 1 J 1.3 39.6Arsenic 2.3 J 86 2,56Barium 260 340 10,30Beryllium ND (2) U 2.2 J 65.4Boron 410,000 B 800 394,0Cadmium 83 1.1 108Calcium 5,000,000 74,000 6,710,0Chromium ND (8) U 87 B 2,59Cobalt 460 15 861Copper 6.7 110 3,28Iron ND (200) U 79,000 2,350,0Lead ND (2) U 33 981Magnesium 2,900,000 4,500 2,750,0Manganese 450,000 1,200 442,0Mercury 3,750 20,100 622,0
A-8 

ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-4. Biphasic Sample Results for Classicals and Total Metals, Influent to FGD Waste

Treatment System, Day 4 Analytical Results, Keystone 

Analyte

Aqueous Phase Result

(mg/L)

Solid Phase Result

(mg/kg)

Calculated 

Sample Resu

Molybdenum ND (40) U 17 506Nickel 2,000 160 B 6,56Selenium 1,200 98 4,00Silver ND (2) U 13 387Sodium 340,000 550 J 323,0Thallium 16 1.4 56.1Tin ND (200) U ND (45) U ND (1,5Titanium ND (20) U 210 6,24Vanadium ND (10) U 110 3,27Zinc 120 180 5,46
A-9 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Classical Pollutants - TotalAmmonia 350.1 mg/l NA 0.343 4.07 Nitrate Nitrite as N 353.2 mg/l NA 0.0596 0.855 Nitrogen, Total Kjeldahl 351.2 mg/l NA 2.43 13.4 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 40 160 800 1Chloride 300.0, 9056 mg/l NA 125 1,450 1Sulfate 300.0, 9056 mg/l NA 14.1 317 1Cyanide, Total 4500 CN E mg/l NA 0.022 0.11 0Total Dissolved Solids 2540C mg/L 1 160 330 3Total Suspended Solids 2540D mg/L 1 92 330 2Phosphorus, Total 365.1 mg/l NA 0.0317 0.21 Classicals Pollutants - Solid (dry weight)Ammonia 350.1 mg/Kg 1 4.1 10 Nitrate Nitrite as N 353.2 mg/Kg 1 0.72 20 Nitrogen, Total Kjeldahl 351.2 mg/Kg 5 62 260 Chloride 9056 mg/Kg 50 97 1,500 1Sulfate 9056 mg/Kg 50 85 2,500 2Cyanide, Total 4500 CN E mg/Kg 1 0.1 0.5 Phosphorus, Total 365.1 mg/Kg 1 0.81 4.9 Classicals Pollutants -Filtered AqueousAmmonia 350.1 mg/L 1 0.22 4 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 
A-10 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Chloride 300.0 mg/L 500 130 1,500 1Sulfate 300.0 mg/L 50 12 250 1Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Phosphorus, Total 365.1 mg/L 1 0.005 0.05 0Metals - Calculated TotalAluminum 200.7, 6010B ug/L NA 266 1,860 1,0Antimony 200.8, 6020 ug/L NA 1.61 15.2 Arsenic 200.8, 6020 ug/L NA 84.6 1,010 3Barium 200.7, 6010B ug/L NA 15 186 1Beryllium 200.7, 6010B ug/L NA 6.01 85.4 Boron 200.7, 6010B ug/L NA 323 6,340 41Cadmium 200.8, 6020 ug/L NA 6.15 25.4 Calcium 200.7, 6010B ug/L NA 3,930 17,700 6,7Chromium 200.8, 6020 ug/L NA 8.09 20.8 3Cobalt 200.7, 6010B ug/L NA 17.7 186 Copper 200.8, 6020 ug/L NA 24.3 87.2 2Iron 200.7, 6010B ug/L NA 664 2,660 2,6Lead 200.8, 6020 ug/L NA 1.88 11.9 1Magnesium 200.7, 6010B ug/L NA 1,110 12,700 2,8Manganese 200.7, 6010B ug/L NA 28.8 634 48Mercury 1631E, FGS-069 ng/L NA 21,500 59,000 53Molybdenum 200.7, 6010B ug/L NA 44.9 368 
A-11 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Nickel 200.8, 6020 ug/L NA 5.88 28.7 5Selenium 200.8, 6020 ug/L NA 11.6 51.8 4Silver 200.8, 6020 ug/L NA 1.89 8.55 Sodium 200.7, 6010B ug/L NA 9,850 92,800 34Thallium 200.8, 6020 ug/L NA 0.673 8.55 Tin 200.7, 6010B ug/L NA 155 1,860 ND Titanium 200.7, 6010B ug/L NA 24.5 186 7Vanadium 200.8, 6020 ug/L NA 4.13 42.4 4Zinc 200.7, 6010B ug/L NA 75.3 538 6Metals - DissolvedAluminum 200.7 ug/L 2 9.4 200 ND Antimony 200.8 ug/L 2 0.72 2 NArsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 NBoron 200.7 ug/L 50 170 5,000 41Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 5,2Chromium 200.8 ug/L 2 3.3 8 NChromium (VI) 218.6 ug/L 5 1.96 10 ND Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 
A-12 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Lead 200.8 ug/L 2 0.73 2 NMagnesium 200.7 ug/L 50 540 10,000 2,9Manganese 200.7 ug/L 50 13 500 47Mercury 1631E ng/L 100 24.1 50.5 1Molybdenum 200.7 ug/L 2 1.6 40 ND Nickel 200.8 ug/L 2 0.89 4 2Selenium 200.8 ug/L 5 1.6 10 1Silver 200.8 ug/L 2 0.59 2 NSodium 200.7 ug/L 2 180 10,000 33Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 ND Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Metals - Filtered AqueousAluminum 200.7 ug/L 2 9.4 200 ND Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 NBoron 200.7 ug/L 50 170 5,000 41Cadmium 200.8 ug/L 10 5.9 20 Calcium 200.7 ug/L 50 1,700 10,000 5,0
A-13 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Chromium 200.8 ug/L 2 3.3 8 NCobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 ND Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 2,9Manganese 200.7 ug/L 50 13 500 47Mercury 1631E ng/L 500 122 255 2Molybdenum 200.7 ug/L 2 1.6 40 ND Nickel 200.8 ug/L 10 4.5 20 2Selenium 200.8 ug/L 10 3.1 20 1Silver 200.8 ug/L 2 0.59 2 NSodium 200.7 ug/L 2 180 10,000 34Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 ND Titanium 200.7 ug/L 2 1.6 20 ND Vanadium 200.8 ug/L 2 1.7 10 ND Zinc 200.7 ug/L 2 9.1 40 Metals - Solid (dry weight)Aluminum 6010B mg/kg 5 7.7 50 3Antimony 6020 mg/kg 2 0.028 0.4 Arsenic 6020 mg/kg 50 2.5 30 Barium 6010B mg/kg 5 0.38 5 
A-14 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. D – Laboratory duplicate RPD greater than method-specified criteria. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-5. Influent to FGD Wastewater Treatment System, Day 1 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Beryllium 6010B mg/kg 5 0.16 2.5 Boron 6010B mg/kg 5 4.9 50 Cadmium 6020 mg/kg 2 0.019 0.2 Calcium 6010B mg/kg 5 70 250 6Chromium 6020 mg/kg 2 0.15 0.4 Cobalt 6010B mg/kg 5 0.5 5 Copper 6020 mg/kg 10 0.7 2.5 Iron 6010B mg/kg 5 19 74 8Lead 6020 mg/kg 2 0.036 0.3 Magnesium 6010B mg/kg 5 18 99 5Manganese 6010B mg/kg 5 0.5 5 1Mercury FGS-069 ng/g 40,000 704 1,940 1Molybdenum 6010B mg/kg 5 1.3 9.9 Nickel 6020 mg/kg 2 0.05 0.3 Selenium 6020 mg/kg 2 0.26 0.99 Silver 6020 mg/kg 2 0.04 0.2 Sodium 6010B mg/kg 5 290 2,500 Thallium 6020 mg/kg 2 0.007 0.2 Tin 6010B mg/kg 5 4.5 50 ND Titanium 6010B mg/kg 5 0.69 5 Vanadium 6020 mg/kg 2 0.076 0.99 Zinc 6010B mg/kg 5 2 15 
A-15 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Classical Pollutants - TotalAmmonia 350.1 mg/l NA 0.328 4.08 Nitrate Nitrite as N 353.2 mg/l NA 0.0567 0.771 Nitrogen, Total Kjeldahl 351.2 mg/l NA 2.1 12 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 10 41 200 Chloride 300.0, 9056 mg/l NA 124 1,440 1Sulfate 300.0, 9056 mg/l NA 16.3 379 Cyanide, Total 4500 CN E mg/l NA 0.0219 0.109 Total Dissolved Solids 2540C mg/L 1 160 330 3Total Suspended Solids 2540D mg/L 1 140 500 2Phosphorus, Total 365.1 mg/l NA 0.24 1.47 Classicals Pollutants - Solid (dry weight)Ammonia 350.1 mg/Kg 1 4.1 10 Nitrate Nitrite as N 353.2 mg/Kg 1 0.71 20 Nitrogen, Total Kjeldahl 351.2 mg/Kg 5 60 250 Chloride 9056 mg/Kg 20 38 580 Sulfate 9056 mg/Kg 100 170 4,900 2Cyanide, Total 4500 CN E mg/Kg 1 0.1 0.5 Phosphorus, Total 365.1 mg/Kg 10 8.1 49 Classicals Pollutants -Filtered AqueousAmmonia 350.1 mg/L 1 0.22 4 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 
A-16 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Chloride 300.0 mg/L 500 130 1,500 1Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Phosphorus, Total 365.1 mg/L 1 0.005 0.05 ND Metals - Calculated TotalAluminum 200.7, 6010B ug/L NA 227 1,610 8Antimony 200.8, 6020 ug/L NA 1.41 12.1 Arsenic 200.8, 6020 ug/L NA 14.2 158 Barium 200.7, 6010B ug/L NA 13.1 161 1Beryllium 200.7, 6010B ug/L NA 5.32 71.6 Boron 200.7, 6010B ug/L NA 301 6,170 3Cadmium 200.8, 6020 ug/L NA 6.09 24.2 Calcium 200.7, 6010B ug/L NA 3,590 16,500 6,Chromium 200.8, 6020 ug/L NA 6.91 17.8 Cobalt 200.7, 6010B ug/L NA 15.3 161 Copper 200.8, 6020 ug/L NA 19.2 67.7 Iron 200.7, 6010B ug/L NA 553 2,310 2,Lead 200.8, 6020 ug/L NA 1.62 9.74 Magnesium 200.7, 6010B ug/L NA 1,030 12,300 2,Manganese 200.7, 6010B ug/L NA 26.6 617 4Mercury 1631E, FGS-069 ng/L NA 20,000 54,900 5Molybdenum 200.7, 6010B ug/L NA 39.3 320 Nickel 200.8, 6020 ug/L NA 5.57 26.8 Selenium 200.8, 6020 ug/L NA 9.91 44.5 
A-17 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Silver 200.8, 6020 ug/L NA 1.61 7.12 Sodium 200.7, 6010B ug/L NA 9,290 117,000 3Thallium 200.8, 6020 ug/L NA 0.626 7.12 Tin 200.7, 6010B ug/L NA 132 1,610 ND Titanium 200.7, 6010B ug/L NA 21.3 161 Vanadium 200.8, 6020 ug/L NA 3.59 35 Zinc 200.7, 6010B ug/L NA 63.8 474 Metals - DissolvedAluminum 200.7 ug/L 2 9.4 200 NAntimony 200.8 ug/L 2 0.72 2 NArsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 NBoron 200.7 ug/L 50 170 5,000 3Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 5,Chromium 200.8 ug/L 2 3.3 8 NChromium (VI) 218.6 ug/L 5 1.96 10 NCobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 NMagnesium 200.7 ug/L 50 540 10,000 2,Manganese 200.7 ug/L 50 13 500 4
A-18 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Mercury 1631E ng/L 100 24.1 50.5 Molybdenum 200.7 ug/L 2 1.6 40 NNickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 NSodium 200.7 ug/L 2 180 10,000 3Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 NTitanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 NZinc 200.7 ug/L 2 9.1 40 Metals - Filtered AqueousAluminum 200.7 ug/L 2 9.4 200 NAntimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 NBoron 200.7 ug/L 50 170 5,000 3Cadmium 200.8 ug/L 10 5.9 20 Calcium 200.7 ug/L 50 1,700 10,000 4,Chromium 200.8 ug/L 2 3.3 8 NCobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 
A-19 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 2,Manganese 200.7 ug/L 50 13 500 4Mercury 1631E ng/L 500 122 255 Molybdenum 200.7 ug/L 2 1.6 40 NNickel 200.8 ug/L 10 4.5 20 Selenium 200.8 ug/L 10 3.1 20 Silver 200.8 ug/L 2 0.59 2 NSodium 200.7 ug/L 10 920 50,000 3Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 NTitanium 200.7 ug/L 2 1.6 20 NVanadium 200.8 ug/L 2 1.7 10 NZinc 200.7 ug/L 2 9.1 40 Metals - Solid (dry weight)Aluminum 6010B mg/kg 5 7.5 49 3Antimony 6020 mg/kg 2 0.025 0.35 Arsenic 6020 mg/kg 10 0.45 5.3 Barium 6010B mg/kg 5 0.37 4.9 Beryllium 6010B mg/kg 5 0.16 2.4 Boron 6010B mg/kg 5 4.8 49 Cadmium 6020 mg/kg 2 0.017 0.18 Calcium 6010B mg/kg 5 68 240 7Chromium 6020 mg/kg 2 0.13 0.35 
A-20 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-6. Influent to FGD Wastewater Treatment System, Day 2 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

SampleSpecific MDL Sample- Specific QL 

Cobalt 6010B mg/kg 5 0.49 4.9 Copper 6020 mg/kg 10 0.63 2.2 Iron 6010B mg/kg 5 18 73 8Lead 6020 mg/kg 2 0.032 0.27 Magnesium 6010B mg/kg 5 18 97 Manganese 6010B mg/kg 5 0.49 4.9 Mercury FGS-069 ng/g 40,000 691 1,900 1Molybdenum 6010B mg/kg 5 1.3 9.7 Nickel 6020 mg/kg 2 0.045 0.27 Selenium 6020 mg/kg 2 0.24 0.88 Silver 6020 mg/kg 2 0.036 0.18 Sodium 6010B mg/kg 5 290 2,400 Thallium 6020 mg/kg 2 0.0062 0.18 Tin 6010B mg/kg 5 4.4 49 NTitanium 6010B mg/kg 5 0.68 4.9 Vanadium 6020 mg/kg 2 0.068 0.88 Zinc 6010B mg/kg 5 1.9 15 
A-21 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Classical Pollutants - Total Ammonia 350.1 mg/l NA 0.336 4.1 Nitrate Nitrite as N 353.2 mg/l NA 0.0581 0.814 Nitrogen, Total Kjeldahl 351.2 mg/l NA 2.27 12.9 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0, 9056 mg/l NA 124 1,440 Sulfate 300.0, 9056 mg/l NA 16.7 390 Cyanide, Total 4500 CN E mg/l NA 0.022 0.11 Total Dissolved Solids 2540C mg/L 1 160 330 Total Suspended Solids 2540D mg/L 1 92 330 Phosphorus, Total 365.1 mg/l NA 0.0294 0.197 Classicals Pollutants - Solid (dry weight) Ammonia 350.1 mg/Kg 1 4.1 10 Nitrate Nitrite as N 353.2 mg/Kg 1 0.71 20 Nitrogen, Total Kjeldahl 351.2 mg/Kg 5 61 260 Chloride 9056 mg/Kg 20 38 580 Sulfate 9056 mg/Kg 100 170 4,900 Cyanide, Total 4500 CN E mg/Kg 1 0.1 0.5 Phosphorus, Total 365.1 mg/Kg 1 0.79 4.8 Classicals Pollutants -Filtered Aqueous Ammonia 350.1 mg/L 1 0.22 4 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 
A-22 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Phosphorus, Total 365.1 mg/L 1 0.005 0.05 Metals - Calculated Total Aluminum 200.7, 6010B ug/L NA 228 1,600 Antimony 200.8, 6020 ug/L NA 1.49 13.8 Arsenic 200.8, 6020 ug/L NA 16.1 182 Barium 200.7, 6010B ug/L NA 13.3 160 Beryllium 200.7, 6010B ug/L NA 5.36 73.8 Boron 200.7, 6010B ug/L NA 301 6,130 Cadmium 200.8, 6020 ug/L NA 6.14 24.9 Calcium 200.7, 6010B ug/L NA 3,610 16,600 Chromium 200.8, 6020 ug/L NA 7.5 19.4 Cobalt 200.7, 6010B ug/L NA 15.1 160 Copper 200.8, 6020 ug/L NA 21.9 78.8 Iron 200.7, 6010B ug/L NA 562 2,310 Lead 200.8, 6020 ug/L NA 1.75 10.6 Magnesium 200.7, 6010B ug/L NA 1,040 12,300 Manganese 200.7, 6010B ug/L NA 26.4 613 Mercury 1631E, FGS-069 ng/L NA 22,600 62,200 Molybdenum 200.7, 6010B ug/L NA 39 322 Nickel 200.8, 6020 ug/L NA 11.8 62.7 Selenium 200.8, 6020 ug/L NA 10.7 48.3 Silver 200.8, 6020 ug/L NA 1.75 7.83 Sodium 200.7, 6010B ug/L NA 8,610 81,400 Thallium 200.8, 6020 ug/L NA 0.651 7.83 Tin 200.7, 6010B ug/L NA 133 1,600 
A-23 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Titanium 200.7, 6010B ug/L NA 21.5 160 Vanadium 200.8, 6020 ug/L NA 3.89 38.8 Zinc 200.7, 6010B ug/L NA 64.9 475 Metals - Dissolved Aluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 100 24.1 50.5 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 
A-24 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Metals - Filtered Aqueous Aluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 10 5.9 20 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 500 122 255 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 10 4.5 20 Selenium 200.8 ug/L 10 3.1 20 Silver 200.8 ug/L 2 0.59 2 
A-25 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Metals - Solid (dry weight) Aluminum 6010B mg/kg 5 7 45 Antimony 6020 mg/kg 2 0.026 0.38 Arsenic 6020 mg/kg 10 0.48 5.7 Barium 6010B mg/kg 5 0.35 4.5 Beryllium 6010B mg/kg 5 0.15 2.3 Boron 6010B mg/kg 5 4.5 45 Cadmium 6020 mg/kg 2 0.018 0.19 Calcium 6010B mg/kg 5 64 230 Chromium 6020 mg/kg 2 0.14 0.38 Cobalt 6010B mg/kg 5 0.45 4.5 Copper 6020 mg/kg 10 0.67 2.4 Iron 6010B mg/kg 5 17 68 Lead 6020 mg/kg 2 0.034 0.28 Magnesium 6010B mg/kg 5 17 91 Manganese 6010B mg/kg 5 0.45 4.5 Mercury FGS-069 ng/g 40,000 707 1,950 Molybdenum 6010B mg/kg 5 1.2 9.1 Nickel 6020 mg/kg 10 0.24 1.4 Selenium 6020 mg/kg 2 0.25 0.94 
A-26 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

Min – Minimum value. P – Sample was not preserved immediately following collection. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-7. Influent to FGD Wastewater Treatment System, Day 3 Analytical Results, Key

Analyte Method Unit 

Dilution 

Factor 

SampleSpecific MDL Sample- Specific QL 

Silver 6020 mg/kg 2 0.038 0.19 Sodium 6010B mg/kg 5 270 2,300 Thallium 6020 mg/kg 2 0.0066 0.19 Tin 6010B mg/kg 5 4.1 45 Titanium 6010B mg/kg 5 0.64 4.5 Vanadium 6020 mg/kg 2 0.073 0.94 Zinc 6010B mg/kg 5 1.8 14 
A-27 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Classical Pollutants - TotalAmmonia 350.1 mg/l NA 0.32 3.91 Nitrate Nitrite as N 353.2 mg/l NA 0.0554 0.775 Nitrogen, Total Kjeldahl 351.2 mg/l NA 2.13 11.9 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0, 9056 mg/l NA 118 1,370 Sulfate 300.0, 9056 mg/l NA 15.9 371 Cyanide, Total 4500 CN E mg/l NA 0.021 0.105 Total Dissolved Solids 2540C mg/L 1 160 330 Total Suspended Solids 2540D mg/L 1 280 1,000 Phosphorus, Total 365.1 mg/l NA 0.0286 0.191 Classicals Pollutants - Solid (dry weight)Ammonia 350.1 mg/Kg 1 4.1 10 Nitrate Nitrite as N 353.2 mg/Kg 1 0.71 20 Nitrogen, Total Kjeldahl 351.2 mg/Kg 5 60 250 Chloride 9056 mg/Kg 20 38 580 Sulfate 9056 mg/Kg 100 170 4,900 Cyanide, Total 4500 CN E mg/Kg 1 0.1 0.5 Phosphorus, Total 365.1 mg/Kg 1 0.81 4.9 Classicals Pollutants -Filtered AqueousAmmonia 350.1 mg/L 1 0.22 4 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 
A-28 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Phosphorus, Total 365.1 mg/L 1 0.005 0.05 Metals - Calculated TotalAluminum 200.7, 6010B ug/L NA 217 1,520 Antimony 200.8, 6020 ug/L NA 1.42 12.8 Arsenic 200.8, 6020 ug/L NA 69.5 836 Barium 200.7, 6010B ug/L NA 12.4 152 Beryllium 200.7, 6010B ug/L NA 5.1 70.2 Boron 200.7, 6010B ug/L NA 284 5,850 Cadmium 200.8, 6020 ug/L NA 5.83 23.4 Calcium 200.7, 6010B ug/L NA 3,440 15,900 Chromium 200.8, 6020 ug/L NA 7.14 18.2 Cobalt 200.7, 6010B ug/L NA 14.4 152 Copper 200.8, 6020 ug/L NA 20.2 72 Iron 200.7, 6010B ug/L NA 534 2,200 Lead 200.8, 6020 ug/L NA 1.64 10.1 Magnesium 200.7, 6010B ug/L NA 993 11,700 Manganese 200.7, 6010B ug/L NA 25.1 585 Mercury 1631E, FGS-069 ng/L NA 22,000 60,600 Molybdenum 200.7, 6010B ug/L NA 37.1 304 Nickel 200.8, 6020 ug/L NA 10.9 59.7 Selenium 200.8, 6020 ug/L NA 9.93 45.4 
A-29 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Silver 200.8, 6020 ug/L NA 6.18 29.2 Sodium 200.7, 6010B ug/L NA 8,190 77,400 Thallium 200.8, 6020 ug/L NA 0.614 7.16 Tin 200.7, 6010B ug/L NA 126 1,520 Titanium 200.7, 6010B ug/L NA 20.2 152 Vanadium 200.8, 6020 ug/L NA 3.64 36.4 Zinc 200.7, 6010B ug/L NA 61.7 452 Metals - DissolvedAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 
A-30 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Mercury 1631E ng/L 100 24.1 50.5 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Metals - Filtered AqueousAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 10 5.9 20 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 
A-31 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 500 122 255 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 10 4.5 20 Selenium 200.8 ug/L 10 3.1 20 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Metals - Solid (dry weight)Aluminum 6010B mg/kg 5 7 45 Antimony 6020 mg/kg 2 0.026 0.37 Arsenic 6020 mg/kg 50 2.3 28 Barium 6010B mg/kg 5 0.34 4.5 Beryllium 6010B mg/kg 5 0.15 2.3 Boron 6010B mg/kg 5 4.4 45 Cadmium 6020 mg/kg 2 0.017 0.18 Calcium 6010B mg/kg 5 64 230 Chromium 6020 mg/kg 2 0.14 0.37 
A-32 

NA – Not applicable. Total results is based on calculated result from solid and aqueous phases. ND – 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. Est – Estimated value. H – Sample was prepared/analyzed beyond the specified holding time. J – Result measured above the MDL, but less than the quantitation limit. L – LFB or LCS percent recovery not within method-specified criteria, but is within laboratory-specified criteria. 

P – Sample was not preserved immediately following collection. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-8. Influent to FGD Wastewater Treatment System, Day 4 Analytical Results, Key

Analyte Method Unit

Dilution 

Factor

Sample-Specific 

MDL

Sample-Specific 

QL 

Cobalt 6010B mg/kg 5 0.45 4.5 Copper 6020 mg/kg 10 0.65 2.3 Iron 6010B mg/kg 5 17 68 Lead 6020 mg/kg 2 0.033 0.28 Magnesium 6010B mg/kg 5 17 90 Manganese 6010B mg/kg 5 0.45 4.5 Mercury FGS-069 ng/g 40,000 712 1,960 Molybdenum 6010B mg/kg 5 1.2 9 Nickel 6020 mg/kg 10 0.23 1.4 Selenium 6020 mg/kg 2 0.24 0.92 Silver 6020 mg/kg 10 0.19 0.92 Sodium 6010B mg/kg 5 270 2,300 Thallium 6020 mg/kg 2 0.0064 0.18 Tin 6010B mg/kg 5 4.1 45 Titanium 6010B mg/kg 5 0.63 4.5 Vanadium 6020 mg/kg 2 0.071 0.92 Zinc 6010B mg/kg 5 1.8 14 
A-33 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-9. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Ke

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

ClassicalsAmmonia 350.1 mg/L 2 0.11 2 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Total Dissolved Solids 2540C mg/L 1 47 100 Total Suspended Solids 2540D mg/L 1 1.1 4 Phosphorus, Total 365.1 mg/L 5 0.025 0.25 Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 
A-34 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-9. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Ke

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Mercury 1631E ng/L 20 4.83 10.1 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 10 3.1 20 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 
A-35 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. M – MS percent recovery outside the method-specified criteria, but within the laboratory-specified criteria. 

Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-9. Effluent from FGD Wastewater Treatment System, Day 1 Analytical Results, Ke

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Mercury 1631E ng/L 10 2.41 5.05 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 
A-36 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-10. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

ClassicalsAmmonia 350.1 mg/L 2 0.11 2 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Total Dissolved Solids 2540C mg/L 1 47 100 Total Suspended Solids 2540D mg/L 1 1.1 4 Phosphorus, Total 365.1 mg/L 5 0.025 0.25 Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 10 2.41 5.05 
A-37 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-10. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 5 1.21 2.52 Molybdenum 200.7 ug/L 2 1.6 40 
A-38 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-10. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 
A-39 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. F – MS and/or MSD not within laboratory control limits. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-11. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

ClassicalsAmmonia 350.1 mg/L 2 0.11 2 Nitrate Nitrite as N 353.2 mg/L 1 0.019 0.1 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Total Dissolved Solids 2540C mg/L 1 47 100 Total Suspended Solids 2540D mg/L 1 1.1 4 Phosphorus, Total 365.1 mg/L 5 0.025 0.25 Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 
A-40 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. F – MS and/or MSD not within laboratory control limits. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-11. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 10 2.41 5.05 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 
A-41 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

B – Analyte was found in the blank and sample. D – Laboratory duplicate RPD greater than method-specified criteria. F – MS and/or MSD not within laboratory control limits. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-11. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 2 0.51 20 Mercury 1631E ng/L 5 1.21 2.52 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 5 1.2 5 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 
A-42 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

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. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-12. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

ClassicalsAmmonia 350.1 mg/L 2 0.11 2 Nitrate Nitrite as N 353.2 mg/L 1 0.019 0.1 Nitrogen, Total Kjeldahl 351.2 mg/L 5 1.9 25 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Total Dissolved Solids 2540C mg/L 1 47 100 Total Suspended Solids 2540D mg/L 1 1.1 4 Phosphorus, Total 365.1 mg/L 5 0.025 0.25 Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 
A-43 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

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. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-12. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Mercury 1631E ng/L 10 2.41 5.05 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 100 31 200 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 5 1.8 5 Arsenic 200.8 ug/L 5 3.1 10 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 
A-44 

ND – Not detected (number in parentheses is the quantitation limit). 4 – MS and/or MSD did not meet laboratory criteria, but sample concentration is four times greater than the matrix spike amount, so control limits are 

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. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-12. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Mercury 1631E ng/L 20 4.83 10.1 Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 5 1.2 5 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 
A-45 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-13. Duplicate of Effluent from Wastewater Treatment System, Day 2 Analytical Result

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

ClassicalsAmmonia 350.1 mg/L 2 0.11 2 Nitrate Nitrite as N 353.2 mg/L 2 0.038 0.2 Nitrogen, Total Kjeldahl 351.2 mg/L 5 0.38 5 Biochemical Oxygen Demand 5210B mg/L 1 0.3 2.5 Chemical Oxygen Demand 410.4 mg/L 5 20 100 Chloride 300.0 mg/L 500 130 1,500 Sulfate 300.0 mg/L 50 12 250 Cyanide, Total 4500 CN E mg/L 1 0.02 0.1 Total Dissolved Solids 2540C mg/L 1 47 100 Total Suspended Solids 2540D mg/L 1 1.1 4 Phosphorus, Total 365.1 mg/L 5 0.025 0.25 Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 10 2.41 5.05 
A-46 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-13. Duplicate of Effluent from Wastewater Treatment System, Day 2 Analytical Result

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Molybdenum 200.7 ug/L 2 1.6 40 Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 Beryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 50 170 5,000 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 50 1,700 10,000 Chromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 5 1.96 10 Cobalt 200.7 ug/L 2 1.1 20 Copper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 Lead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 50 540 10,000 Manganese 200.7 ug/L 50 13 500 Mercury 1631E ng/L 5 1.21 2.52 Molybdenum 200.7 ug/L 2 1.6 40 
A-47 

ND – Not detected (number in parentheses is the quantitation limit). B – Analyte was found in the blank and sample. J – Result measured above the MDL, but less than the quantitation limit. Min – Minimum value. S – Seed correction blank recovery low. U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-13. Duplicate of Effluent from Wastewater Treatment System, Day 2 Analytical Result

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL 

Nickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 5 1.6 10 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 Titanium 200.7 ug/L 2 1.6 20 Vanadium 200.8 ug/L 2 1.7 10 Zinc 200.7 ug/L 2 9.1 40 
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 quantitation limit). 

A-48 

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone

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 quantitation limit). 

A-49 

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone

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 Blank (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)

Aluminuma 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 quantitation limit). 

A-50 

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone

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-splitter, and two pieces of 5 

feet of #24 silicone tubing for sample collection 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 quantitation limit). 

A-51 

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone

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 Blank (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 dissolved 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 #73 silicone tubing, T-splitter, six feet of #73 silicone 

tubing, and 15 feet of #73 silicone tubing for total and dissolved sample collection 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) 
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 quantitation limit). 

A-52 

Table A-14. Bottle Blank and Equipment Blank Analytical Data, Keystone

Analyte Method Process Units Concentration 

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) 
A-53 

ND – Not detected (number in parentheses is the quantitation limit). 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-15. Influent to FGD Wastewater Treatment System Field Blank, Day 1 Analytical Resul

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL C

Total MetalsAluminum 200.7 ug/L 2 9.4 200 Antimony 200.8 ug/L 2 0.72 2 Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 NBeryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 2 6.7 200 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 2 69 400 Chromium 200.8 ug/L 2 3.3 8 Cobalt 200.7 ug/L 2 1.1 20 NCopper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 NLead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 2 21 400 Manganese 200.7 ug/L 2 0.51 20 Mercury 1631E ng/L 1 0.24 0.5 NMolybdenum 200.7 ug/L 2 1.6 40 NNickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 2 0.62 4 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 ND Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 NTitanium 200.7 ug/L 2 1.6 20 NVanadium 200.8 ug/L 2 1.7 10 NZinc 200.7 ug/L 2 9.1 40 NDissolved MetalsAluminum 200.7 ug/L 2 9.4 200 NAntimony 200.8 ug/L 2 0.72 2 
A-54 

ND – Not detected (number in parentheses is the quantitation limit). 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-15. Influent to FGD Wastewater Treatment System Field Blank, Day 1 Analytical Resul

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL C

Arsenic 200.8 ug/L 2 1.2 4 Barium 200.7 ug/L 2 2.5 20 NBeryllium 200.7 ug/L 2 0.71 2 Boron 200.7 ug/L 2 6.7 200 Cadmium 200.8 ug/L 2 1.2 4 Calcium 200.7 ug/L 2 69 400 NChromium 200.8 ug/L 2 3.3 8 Chromium (VI) 218.6 ug/L 1 0.39 2 Cobalt 200.7 ug/L 2 1.1 20 NCopper 200.8 ug/L 2 0.96 4 Iron 200.7 ug/L 2 32 200 NLead 200.8 ug/L 2 0.73 2 Magnesium 200.7 ug/L 2 21 400 NManganese 200.7 ug/L 2 0.51 20 Molybdenum 200.7 ug/L 2 1.6 40 NNickel 200.8 ug/L 2 0.89 4 Selenium 200.8 ug/L 2 0.62 4 Silver 200.8 ug/L 2 0.59 2 Sodium 200.7 ug/L 2 180 10,000 ND Thallium 200.8 ug/L 2 0.47 2 Tin 200.7 ug/L 2 4.8 200 NTitanium 200.7 ug/L 2 1.6 20 NVanadium 200.8 ug/L 2 1.7 10 NZinc 200.7 ug/L 2 9.1 40 N
A-55 

ND – Not detected (number in parentheses is the quantitation limit). 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-16. Effluent from FGD Wastewater Treatment System Field Blank, Day 1 Analytical Results, K

Analyte Method Unit

Dilution 

Factor

SampleSpecific 

MDL

SampleSpecific QL Concentrati

Total MetalsAluminum 200.7 ug/L 2 9.4 200 ND (200) Antimony 200.8 ug/L 2 0.72 2 ND (2) Arsenic 200.8 ug/L 2 1.2 4 ND (4) Barium 200.7 ug/L 2 2.5 20 ND (20) Beryllium 200.7 ug/L 2 0.71 2 ND (2) Boron 200.7 ug/L 2 6.7 200 67 Cadmium 200.8 ug/L 2 1.2 4 ND (4) Calcium 200.7 ug/L 2 69 400 83 Chromium 200.8 ug/L 2 3.3 8 ND (8) Cobalt 200.7 ug/L 2 1.1 20 ND (20) Copper 200.8 ug/L 2 0.96 4 ND (4) Iron 200.7 ug/L 2 32 200 ND (200) Lead 200.8 ug/L 2 0.73 2 ND (2) Magnesium 200.7 ug/L 2 21 400 30 Manganese 200.7 ug/L 2 0.51 20 3.6 Mercury 1631E ng/L 1 0.24 0.5 ND (0.5) Molybdenum 200.7 ug/L 2 1.6 40 ND (40) Nickel 200.8 ug/L 2 0.89 4 ND (4) Selenium 200.8 ug/L 2 0.62 4 ND (4) Silver 200.8 ug/L 2 0.59 2 ND (2) Sodium 200.7 ug/L 2 180 10,000 ND (10,000) Thallium 200.8 ug/L 2 0.47 2 ND (2) Tin 200.7 ug/L 2 4.8 200 ND (200) 
A-56 

ND – Not detected (number in parentheses is the quantitation limit). 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-16. Effluent from FGD Wastewater Treatment System Field Blank, Day 1 Analytical Results, K

Analyte Method Unit

Dilution 

Factor

SampleSpecific 

MDL

SampleSpecific QL Concentrati

Titanium 200.7 ug/L 2 1.6 20 ND (20) Vanadium 200.8 ug/L 2 1.7 10 2.9 Zinc 200.7 ug/L 2 9.1 40 11 Dissolved MetalsAluminum 200.7 ug/L 2 9.4 200 ND (200) Antimony 200.8 ug/L 2 0.72 2 ND (2) Arsenic 200.8 ug/L 2 1.2 4 ND (4) Barium 200.7 ug/L 2 2.5 20 ND (20) Beryllium 200.7 ug/L 2 0.71 2 ND (2) Boron 200.7 ug/L 2 6.7 200 49 Cadmium 200.8 ug/L 2 1.2 4 ND (4) Calcium 200.7 ug/L 2 69 400 ND (400) Chromium 200.8 ug/L 2 3.3 8 ND (8) Chromium (VI) 218.6 ug/L 1 0.39 2 ND (2) Cobalt 200.7 ug/L 2 1.1 20 ND (20) Copper 200.8 ug/L 2 0.96 4 ND (4) Iron 200.7 ug/L 2 32 200 ND (200) Lead 200.8 ug/L 2 0.73 2 ND (2) Magnesium 200.7 ug/L 2 21 400 ND (400) Manganese 200.7 ug/L 2 0.51 20 0.6 Molybdenum 200.7 ug/L 2 1.6 40 ND (40) Nickel 200.8 ug/L 2 0.89 4 ND (4) Selenium 200.8 ug/L 2 0.62 4 0.72 Silver 200.8 ug/L 2 0.59 2 ND (2) 
A-57 

ND – Not detected (number in parentheses is the quantitation limit). 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-16. Effluent from FGD Wastewater Treatment System Field Blank, Day 1 Analytical Results, K

Analyte Method Unit

Dilution 

Factor

SampleSpecific 

MDL

SampleSpecific QL Concentrati

Sodium 200.7 ug/L 2 180 10,000 ND (10,000) Thallium 200.8 ug/L 2 0.47 2 ND (2) Tin 200.7 ug/L 2 4.8 200 ND (200) Titanium 200.7 ug/L 2 1.6 20 ND (20) Vanadium 200.8 ug/L 2 1.7 10 2.1 Zinc 200.7 ug/L 2 9.1 40 ND (40) 
A-58 

ND – Not detected (number in parentheses is the quantitation limit). U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-17. Effluent from FGD Wastewater Treatment System, Day 2 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL Con

Total MetalsMercury 1631E ng/L 1 0.24 0.5 ND 
A-59 

ND – Not detected (number in parentheses is the quantitation limit). U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-18. Effluent from FGD Wastewater Treatment System, Day 3 Analytical Results, K

Analyte Method Unit Dilution Factor Sample-Specific MDL Sample-Specific QL Con

Total MetalsMercury 1631E ng/L 1 0.24 0.5 ND 
A-60 

ND – Not detected (number in parentheses is the quantitation limit). U – Result below the MDL. (Number shown in parentheses is the quantitation limit). 

Table A-19. Effluent from FGD Wastewater Treatment System, Day 4 Analytical Results, K

Analyte Method Units Dilution Factor Sample-Specific MDL Sample-Specific QL Con

Total MetalsMercury 1631E ng/L 1 0.24 0.5 ND 
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 Collection Set-Up at the Effluent from the FGD Wastewater Treatment 

System