Background:

Data Element Dictionary:

Database Table Name: Table name in the database that corresponds to the information in a specific set of informaDescription: General description of the type of data contained within the database table.Database Table Name: Table name in the database that corresponds to the information in a specific set of informaDatabase Field Name:Field Type Text: Specified data type of the field name (e.g., text, numeric, memo).Field Description: Description of the field name.

This MS Excel file is the data element dictionary that provides a description of the data elements contained within the Loadings Leachate. The elements of the dictionary include: 

Tables: Provides a listing of all tables found within the Loadings Model for Landfill Leachate along with a short desc

contained within the table.Field Names: Provides a list of all individual data fields found within the Loadings Model for Landfill Leachate. The 

table name.

Field name within a database table that corresponds to a specific data element in the loadcan be repeated for the same type of information being entered (i.e., Plant_ID).

Landfill Leachate Loadings Model Data Element Dictionary - Summary

4/19/2013

The primary purpose of the Steam Electric Pollutant Loadings Model for Landfill Leachate (DCN SE02901) is to calculate the plaloadings for the technology options being evaluated for landfill leachate as part of the Steam Electric Effluent Limitations Guidelpollutant loadings calculations, average effluent concentrations for each technology option were developed for both active and idatabase includes the calculations used to estimate an average effluent concentration for chemical precipitation and biological teffluent concentration of untreated landfill leachate is also calculated this database for both active and inactive landfills.The Incremental Costs and Pollutant Removals for the Proposed Effluent Guidelines and Standards for the Steam Electric PoweSource Category (DCN SE01964) provides a detailed description of the calculations used to estimate the average effluent conctechnology options. The report also provides a description of the calculations used to estimate plant-specific pollutant loadings option. These calculations are executed in the queries contained within the database. The database also includes a listing of thused to calculate the average effluent concentrations for each technology option.
Database Table Name Description

Conc Data 01: Final Bio Concentration Average effluent concentration for biological treatment effluent. 

The data contained in this table is calculated in the FGD 

Wastewater Loadings Model (DCN SE02900)

Conc Data 02: Final CP Concentration Average effluent concentration for chemical precipitation 

effluent. The data contained in this table is calculated in the 

FGD Wastewater Loadings Model (DCN SE02900)

Data 01 - Untreated Data All sampling data submitted by plants as part of the Steam 

Electric Survey representing untreated landfill leachate. Data 

pulled from the Leach_Smpl_Data table in the Steam Electric 

Technical Questionnaire Database (DCN SE01958)

Data 01a - Untreated Data Null Records All null records submitted by plants as part of the Steam Electric 

Survey for untreated landfill leachate.

dsl 0 - Landfill Status and Version List of all plants providing sampling data as part of the Steam 

Electric Survey and indicators for active, inactive, and retired 

landfills.

EIA_ID Crosswalk between EPA OW plant identification number from 

the Steam Electric Survey and U.S. Energy Information 

Administration (EIA) identification number.

EPA_Landfill_type Results of an analysis conducted by EPA (DCN SE00986) to 

classify each landfill reported in the Steam Electric Survey as 

containing ash, FGD, ash and FGD, or neither type of waste.

J Value Qualifier Crosswalk List of all qualifiers for untreated landfill leachate samples from 

Data 01 used to determine which qualifiers constitute a J value 

(concentration between the method detection limit and the 

reporting limit).

Landfill ID Crosswalk Crosswalk between the landfill identification number entered in 

Part G of the Steam Electric Survey and a standard landfill 

identification number.

Landfill_General Landfill_General table from the Steam Electric Technical 

Questionnaire Database (DCN SE01958). This table contains 

general information for all landfills included in the Steam Electric 

Survey.

Leach_Smpl_Data Leach_Smpl_Data table from the Steam Electric Technical 

Questionnaire Database (DCN SE01958). This table contains 

all leachate sampling data submitted as part of the Steam 

Electric Survey.

Leachate Input Table Plant-level input table containing landfill and leachate flow rate 

information used for estimating costs and pollutant loadings for 

plants discharging landfill leachate.

Loads 01: Baseline Loads Plant-specific analyte-level loadings for the baseline scenario.

Loads 01: Baseline Loads Copy for Pre 

POTWs

Plant-specific analyte-level loadings for the baseline scenario 

before adjusting pollutant removals for the additional removal 

achieved by publically owned treatment works (POTWs).

Loads 02: CP Loads Plant-specific analyte-level loadings for the chemical 

precipitation treatment option.

Loads 03: Bio Loads Plant-specific analyte-level loadings for the biological treatment 

option.

Plant 5839 crosswalk Crosswalk used to expand landfill identification numbers 

specific to Plant ID 5839.
POTW Removal Crosswalk Crosswalk between the analyte name as it's listed in the 

sampling data and the analyte name as it's listed in the POTW 

data.

POTW Removals Analyte-level list of publically owned treatment works (POTW) 

removals.

TWF Crosswalk Crosswalk between the analyte name as it's listed in the 

sampling data and the analyte name as it's listed in the TWF 

table.

TWFs Analyte-level list of toxic weighting factors (TWFs).
EPA‐HQ‐OW‐2009‐0819‐DRAFT‐2190

Database Table Name Database Field Name Field Type Text Field Description

Conc Data 01: Final Bio Concentration ANALYTE Text List of analytes for biological treatment concentration data set

Conc Data 01: Final Bio Concentration AMOUNT Number (Double) Biological treatment effluent concentration

Conc Data 01: Final Bio Concentration UNITS Text Units associated with the amount field

Conc Data 01: Final Bio Concentration Treatment Text Type of treatment, flagged as bio. Used for calculations.

Conc Data 02: Final CP Concentration ANALYTE Text List of analytes for chemical precipitation concentration data setConc Data 02: Final CP Concentration CAS

_

NO Text Analyte-specific Chemical Abstracts Service (CAS) number.

Conc Data 02: Final CP Concentration AMOUNT Number (Double) Chemical precipitation effluent concentration

Conc Data 02: Final CP Concentration UNITS Text Units associated with the amount field

Conc Data 02: Final CP Concentration Treatment Text Type of treatment, flagged as chemical precipitation. Used for calculations

Data 01 - Untreated Data plant_id Number (Double) Plant identification number

Data 01 - Untreated Data cbi

_

Smpl_Loc_Desc Yes/No CBI designation checkbox for leachate sampling data

Data 01 - Untreated Data Smpl_Loc_Desc Memo Description of the sampling location.

Data 01 - Untreated Data Landfill ID Text Pond/Landfill identification number (Assigned in Tables A-4 or A-6 of the SteData 01 - Untreated Data Leach

_

Data

_

Smpl_Location Text Indicates the location of the sample point for data collection

Data 01 - Untreated Data cbi

_

Smpl_Data Yes/No CBI designation checkbox for leachate sampling data

Data 01 - Untreated Data Leach

_

Analyte Text Name of the analyte measured.

Data 01 - Untreated Data Leach

_

CAS Text Analyte-specific Chemical Abstracts Service (CAS) number.

Data 01 - Untreated Data Concentration Number (Double) Concentration of analyte (μg/L). This table includes only complete results, thData 01 - Untreated Data Leach

_

Method Text Analytical method used to measure the concentration

Data 01 - Untreated Data Leach

_

Method

_

Other Text Description of analytical method used, if "other" selected

Data 01 - Untreated Data Leach

_

Method

_

DL Number (Double) Method Detection Limit (MDL) (μg/L).

Data 01 - Untreated Data Leach

_

Method

_

RL Number (Double) Reporting Limit (μg/L).

Data 01 - Untreated Data Leach

_

Method

_

Qua Text Qualifiers for the Measurement.

Data 01 - Untreated Data ND Flag Number (Long Integer) Non-detect result.

Data 01 - Untreated Data J Value Flag Text Flags those qualifiers that are considered J values (a concentration between 

Data 01a - Untreated Data Null Records plant_id Number (Double) Plant identification number

Data 01a - Untreated Data Null Records cbi

_

Smpl_Loc_Desc Yes/No CBI designation checkbox for leachate sampling data

Data 01a - Untreated Data Null Records Smpl_Loc_Desc Memo Description of the sampling location.

Data 01a - Untreated Data Null Records Landfill ID Text Pond/Landfill identification number (Assigned in Tables A-4 or A-6 of the SteData 01a - Untreated Data Null Records Leach

_

Data

_

Smpl_Location Text Indicates the location of the sample point for data collection

Data 01a - Untreated Data Null Records cbi

_

Smpl_Data Yes/No CBI designation checkbox for leachate sampling data

Data 01a - Untreated Data Null Records Leach

_

Analyte Text Name of the analyte measured.

Data 01a - Untreated Data Null Records Leach

_

CAS Text Analyte-specific Chemical Abstracts Service (CAS) number.

Data 01a - Untreated Data Null Records Concentration Number (Double) Concentration of analyte (μg/L). This table includes only those results with nData 01a - Untreated Data Null Records Leach

_

Method Text Analytical method used to measure the concentration

Data 01a - Untreated Data Null Records Leach

_

Method

_

Other Text Description of analytical method used, if "other" selected

Data 01a - Untreated Data Null Records Leach

_

Method

_

DL Number (Double) Method Detection Limit (MDL) (μg/L).

Data 01a - Untreated Data Null Records Leach

_

Method

_

RL Number (Double) Reporting Limit (μg/L).

Data 01a - Untreated Data Null Records Leach

_

Method

_

Qua Text Qualifiers for the Measurement.

Data 01a - Untreated Data Null Records ND Flag Number (Long Integer) Non-detect result.

dsl 0 - Landfill Status and Version plant_id Number (Double) Unique EPA Office of Water Survey plant identification number

dsl 0 - Landfill Status and Version Version Text Version of the Steam Electric Survey administered to the plant

dsl 0 - Landfill Status and Version landfill

_

id Text Landfill identification

dsl 0 - Landfill Status and Version landfill

_

leachate

_

collect Text Is landfill leachate collected?

dsl 0 - Landfill Status and Version landfill

_

inactive Text Is the landfill inactive?

EIA

_

ID plant_id Number (Double) Unique EPA Office of Water Survey plant identification number

EIA

_

ID eia

_

id Number (Double) Unique plant identification code associated with the U.S. Energy Information 

EIA

_

ID eia

_

id

_

reported Text The U.S. Energy Information Administration identification number reported b

EPA

_

Landfill

_

type plant_id Number (Double) Plant identification number

EPA

_

Landfill

_

type landfill_id Text Landfill identification number

EPA

_

Landfill

_

type ld_solid_bottom_ash Text Does the landfill contain solid bottom ash?

EPA

_

Landfill

_

type ld_solid_fly_ash Text Does the landfill contain solid fly ash?

EPA

_

Landfill

_

type ld_solid_unk_ash Text Does the landfill contain an unknown type of solid ash?

EPA

_

Landfill

_

type ld_solid_fgd Text Does the landfill contain FGD solids?

EPA

_

Landfill

_

type ld_solid_fgd_other Text Does the landfill contain other solids generated by the FGD wastewater treat

EPA

_

Landfill

_

type ld_solid_fly_ash_other Text Does the landfill contain other type of fly ash solids?

EPA

_

Landfill

_

type ld_solid_bottom_ash_other Text Does the landfill contain other type of bottom ash solids?

EPA

_

Landfill

_

type land_type Text Type of waste held in the landfill (ash, FGD, ash and FGD, or neither)

EPA

_

Landfill

_

type landfill_stor_slag Text Boiler slag is stored or disposed of in the landfill unit identified

EPA

_

Landfill

_

type landfill_stor_ba Text Bottom ash is stored or disposed of in the landfill unit identified

EPA

_

Landfill

_

type landfill_stor_fa Text Fly ash is stored or disposed of in the landfill unit identified

EPA

_

Landfill

_

type landfill_stor_gypsum Text FGD calcium sulfate (gypsum) is stored or disposed of in the landfill unit iden

EPA

_

Landfill

_

type landfill_stor_Ca_Sulfite Text FGD calcium sulfite (not pozzolanic) is stored or disposed of in the landfill un

EPA

_

Landfill

_

type landfill_stor_pozz Text FGD pozzolanic material is stored or disposed of in the landfill unit identified

5 of 8
EPA‐HQ‐OW‐2009‐0819‐DRAFT‐2190

Database Table Name Database Field Name Field Type Text Field Description

EPA

_

Landfill

_

type landfill_stor_dryFGD Text Solids from dry FGD are stored or disposed of in the landfill unit identified

EPA

_

Landfill

_

type landfill_stor_other1 Text The specification of another type of waste is stored or disposed of in the land

EPA

_

Landfill

_

type landfill_stor_other2 Text The specification of another type of waste is stored or disposed of in the land

EPA

_

Landfill

_

type landfill_stor_other3 Text The specification of another type of waste is stored or disposed of in the land

EPA

_

Landfill

_

type landfill_stor_other4 Text The specification of another type of waste is stored or disposed of in the land

J Value Qualifier Crosswalk Leach

_

Method

_

Qua Text Listing of all qualifiers from the Data 01 - Untreated Data table

J Value Qualifier Crosswalk J Value Qualifier Text Flags those qualifiers that are considered J values (a concentration between 

Landfill ID Crosswalk Plant ID Number (Long Integer) Unique EPA Office of Water Survey plant identification numberLandfill ID Crosswalk Landfill ID Part G Text Landfill identification as entered by the plant in Part G of the Steam Electric SLandfill ID Crosswalk Landfill ID Text Normalized landfill identification to correct for errors in spelling and capitalizaLandfill

_

Genera plant_id Number (Double) Plant identification number

Landfill

_

Genera landfill

_

id Text EPA-assigned landfill ID number.

Landfill

_

Genera cbi

_

landfill

_

tbl Yes/No CBI designation checkbox for A4-2 of the Steam Electric Questionnaire

Landfill

_

Genera landfill

_

status Text Active/inactive/open landfill; retired/closed landfill; and/or planned landfil

Landfill

_

Genera landfill

_

desc Text Plant’s name for each pond/impoundment unit

Landfill

_

Genera landfill

_

lat

_

deg Number (Double) The latitude degrees of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

lat

_

min Number (Double) The latitude minutes of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

lat

_

sec Number (Double) The latitude seconds of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

long_deg Number (Double) The longitude degrees of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

long_min Number (Double) The longitude minutes of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

long_sec Number (Double) The longitude seconds of the geographical coordinates of the landfill

Landfill

_

Genera landfill

_

lined Text The yes/no answer to whether the landfill is lined

Landfill

_

Genera landfill

_

leachate

_

collect Text The yes/no answer to whether the leachate is collected

Landfill

_

Genera landfill

_

dist Number (Double) The closest distance to the nearest surface water (in ft).

Landfill

_

Genera landfill

_

online_yr Number (Double) Year landfill initially brought online or planned to be brought online

Landfill

_

Genera landfill

_

inactive Text The yes/no answer to whether the active/inactive/open landfill is "Inactive.

Leach

_

Smpl_Data plant_id Number (Double) Plant identification number

Leach

_

Smpl_Data cbi_Smpl_Loc_Desc Yes/No CBI designation checkbox for leachate sampling data

Leach

_

Smpl_Data Smpl_Loc_Desc Memo Description of the sampling location.

Leach

_

Smpl_Data Pond_Landfill_ID Text Pond/Landfill identification number (Assigned in Tables A-4 or A-6 of the Ste

Leach

_

Smpl_Data Leach_Data_Smpl_Location Text Indicates the location of the sample point for data collection

Leach

_

Smpl_Data cbi_Smpl_Data Yes/No CBI designation checkbox for leachate sampling data

Leach

_

Smpl_Data Leach_Analyte Text Name of the analyte measured.

Leach

_

Smpl_Data Leach_CAS Text Analyte-specific Chemical Abstracts Service (CAS) number.

Leach

_

Smpl_Data Leach_Non_Detect Text Non-detect result.

Leach

_

Smpl_Data Leach_Conc Number (Double) Concentration of analyte (μg/L).

Leach

_

Smpl_Data Leach_Method Text Analytical method used to measure the concentration

Leach

_

Smpl_Data Leach_Method_Other Text Description of analytical method used, if "other" selected

Leach

_

Smpl_Data Leach_Method_DL Number (Double) Method Detection Limit (MDL) (μg/L).

Leach

_

Smpl_Data Leach_Method_RL Number (Double) Reporting Limit (μg/L).

Leach

_

Smpl_Data Leach_Method_Qua Text Qualifiers for the Measurement.

Leachate Input Table plant_id Number (Double) Unique EPA Office of Water Survey plant identification numberLeachate Input Table Landfill_id Text Landfill identification

Leachate Input Table Landfill_Type Text Type of landfill, active, inactive, or retired.

Leachate Input Table surfwater_name Text Name of the surface water where treated leachate is currently discharged

Leachate Input Table Post_Treatment_Surface_Water Text Name of the surface water where the ELG assumes the treated leachate wil

where applicable).

Leachate Input Table Ldfl_Leach_Vol_GPD Number (Double) Volume of leachate discharged in gallons per day as reported in Part F of the Leachate Input Table Ldfl_SA Number (Double) Surface area of the landfill collecting leachate

Leachate Input Table Landfill_acre Number (Double) Area of the landfill collecting leachate in acres

Leachate Input Table Closed_pond_land_acre Number (Double) Area of closed ponds and/or landfills in acres

Leachate Input Table LeachateAcres/TotalLandfillAcres Number (Double) Ratio of the area of landfill collecting leachate to the total area of landfills at t

Leachate Input Table LeachateGPD/LeachateAcres Number (Double) Ratio of the leachate generation (in gallons per day) to the area of landfill coLeachate Input Table Leachate_GPD Number (Double) Volume of leachate discharged in gallons per day. Value used for costs and Leachate Input Table CBI Flag Yes/No Overall confidential business information flagLeachate Input Table CBI Part A Text Confidential business information flag for information gathered from Part A oLeachate Input Table CBI Part C Text Confidential business information flag for information gathered from Part C oLeachate Input Table CBI Part F Text Confidential business information flag for information gathered from Part F oLeachate Input Table Treatment Basis Text Identifies the level of leachate treatment currently used at each plant (pond, Leachate Input Table CP Treatment Text Identifies the level of leachate treatment that will be evaluated as part of the 

(CP or Bio).

Leachate Input Table Bio Treatment Text

Identifies the level of leachate treatment that will be evaluated as part of the 

Leachate Input Table Retire? Yes/No Indicator for whether the plant is planning to retire

6 of 8
EPA‐HQ‐OW‐2009‐0819‐DRAFT‐2190

Database Table Name Database Field Name Field Type Text Field Description

Leachate Input Table TIP/Leachate Separate Yes/No Identify plants where leachate is treated separately because existing system Loads 01: Baseline Loads eia

_

id Text Unique plant identification code associated with the U.S. Energy Information 

Loads 01: Baseline Loads plant_id Text Unique EPA Office of Water Survey plant identification numberLoads 01: Baseline Loads Landfill

_

id Text Landfill identification

Loads 01: Baseline Loads Landfill

_

Type Text Type of landfill, active, inactive, or retired.

Loads 01: Baseline Loads Treatment Basis Text Identifies the level of leachate treatment currently used at each plant (pond, Loads 01: Baseline Loads Flow Rate (gpd) Text Landfill leachate flow rate in gallons per dayLoads 01: Baseline Loads surfwater

_

name Text Name of the surface water where treated leachate is currently discharged

Loads 01: Baseline Loads CBI Flag Text Overall confidential business information flag

Loads 01: Baseline Loads Analyte Text List of analytes.

Loads 01: Baseline Loads Amount_(ug/L) Text Concentration of analyte (μg/L).

Loads 01: Baseline Loads Load_(lb/yr) Text Total load in pounds per year

Loads 01: Baseline Loads Current TWF Text Current toxic weighting factor.

Loads 01: Baseline Loads TWPE Text Calculated annual toxic weighted pound equivalentLoads 01: Baseline Loads Copy for Pre POTWs eia_id Text Unique plant identification code associated with the U.S. Energy Information Loads 01: Baseline Loads Copy for Pre POTWs plant_id Text Unique EPA Office of Water Survey plant identification number. This table in

landfill leachate to a publically owned treatment works.

Loads 01: Baseline Loads Copy for Pre POTWs Landfill_id Text Landfill identification

Loads 01: Baseline Loads Copy for Pre POTWs Landfill_Type Text Type of landfill, active, inactive, or retired.

Loads 01: Baseline Loads Copy for Pre POTWs Treatment Basis Text Identifies the level of leachate treatment currently used at each plant (pond, Loads 01: Baseline Loads Copy for Pre POTWs Flow Rate (gpd) Text Landfill leachate flow rate in gallons per dayLoads 01: Baseline Loads Copy for Pre POTWs surfwater_name Text Name of the surface water where treated leachate is currently discharged

Loads 01: Baseline Loads Copy for Pre POTWs CBI Flag Text Overall confidential business information flag

Loads 01: Baseline Loads Copy for Pre POTWs Analyte Text List of analytes.

Loads 01: Baseline Loads Copy for Pre POTWs Amount_(ug/L) Text Concentration of analyte (μg/L). Concentration is before POTW removals ha

Loads 01: Baseline Loads Copy for Pre POTWs Load_(lb/yr) Text Total load in pounds per year

Loads 01: Baseline Loads Copy for Pre POTWs Current TWF Text Current toxic weighting factor.

Loads 01: Baseline Loads Copy for Pre POTWs TWPE Text Calculated annual toxic weighted pound equivalentLoads 02: CP Loads eia

_

id Text Unique plant identification code associated with the U.S. Energy Information 

Loads 02: CP Loads plant_id Text Unique EPA Office of Water Survey plant identification numberLoads 02: CP Loads Landfill

_

id Text Landfill identification

Loads 02: CP Loads Landfill

_

Type Text Type of landfill, active, inactive, or retired.

Loads 02: CP Loads Treatment Basis Text Identifies the level of leachate treatment currently used at each plant (pond, Loads 02: CP Loads CP Option Treatment Text Identifies the level of leachate treatment that will be evaluated as part of the 

(CP or Bio).

Loads 02: CP Loads Flow Rate (gpd) Text Landfill leachate flow rate in gallons per day

Loads 02: CP Loads surfwater

_

name Text Name of the surface water where treated leachate is currently discharged

Loads 02: CP Loads Post_Treatment_Surface_Water Text Name of the surface water where the ELG assumes the treated leachate wil

where applicable).

Loads 02: CP Loads CBI Flag Text Overall confidential business information flagLoads 02: CP Loads ANALYTE Text List of analytes.

Loads 02: CP Loads Amount_(ug/L) Text Concentration of analyte (μg/L). This table includes analyte concentrations a

treatment scenario.

Loads 02: CP Loads Load_(lb/yr) Text Total load in pounds per year

Loads 02: CP Loads Current TWF Text Current toxic weighting factor.

Loads 02: CP Loads TWPE Text Calculated annual toxic weighted pound equivalentLoads 03: Bio Loads eia

_

id Text Unique plant identification code associated with the U.S. Energy Information 

Loads 03: Bio Loads plant_id Text Unique EPA Office of Water Survey plant identification numberLoads 03: Bio Loads Landfill

_

id Text Landfill identification

Loads 03: Bio Loads Landfill

_

Type Text Type of landfill, active, inactive, or retired.

Loads 03: Bio Loads Treatment Basis Text Identifies the level of leachate treatment currently used at each plant (pond, Loads 03: Bio Loads Bio Option Treatment Text Identifies the level of leachate treatment that will be evaluated as part of the Loads 03: Bio Loads Flow Rate (gpd) Text Landfill leachate flow rate in gallons per dayLoads 03: Bio Loads Post_Treatment_Surface_Water Text Name of the surface water where the ELG assumes the treated leachate wil

where applicable).

Loads 03: Bio Loads CBI Flag Text Overall confidential business information flagLoads 03: Bio Loads ANALYTE Text List of analytes.

Loads 03: Bio Loads Amount_(ug/L) Text Concentration of analyte (μg/L). This table includes analyte concentrations a

scenario.

Loads 03: Bio Loads Load_(lb/yr) Text Total load in pounds per year

Loads 03: Bio Loads Current TWF Text Current toxic weighting factor.

Loads 03: Bio Loads TWPE Text Calculated annual toxic weighted pound equivalentPlant 5839 crosswalk Plant

_

ID Text Plant identification number

Plant 5839 crosswalk Part G Landfill ID Text Landfill identification as entered by the plant in Part G of the Steam Electric S

7 of 8
EPA‐HQ‐OW‐2009‐0819‐DRAFT‐2190

Database Table Name Database Field Name Field Type Text Field Description

Plant 5839 crosswalk Landfill ID Text Corrected landfill identification numberPOTW Removal Crosswalk ANALYTE Text List of analytes.

POTW Removal Crosswalk POTW ANALYTE Text Analyte name listed in the POTW removals table that corresponds to analyte 

POTW Removals CAS # Text Analyte-specific Chemical Abstracts Service (CAS) number.POTW Removals Chemical Text Chemical name.POTW Removals POTW Removal Text Publically Owned Treatment Works removal percentage.TWF Crosswalk ANALYTE Text List of analytes.

TWF Crosswalk TWF ANALYTE Text Analyte name as listed in the TWF table.

TWFs Pollutant Text Analyte name.TWFs CASNU Text Analyte-specific Chemical Abstracts Service (CAS) number.TWFs Current TWF Text Current toxic weighting factor.TWFs 02/09 TWF Text Toxic weighting factor as of 2/2009TWFs 11/07 TWF Text Toxic weighting factor as of 11/2007TWFs 04/06 TWF Text Toxic weighting factor as of 4/2006TWFs 12/04 TWF Text Toxic weighting factor as of 12/2004TWFs 12/04 no RSC TWF Text Toxic weighting factor as of 12/2004TWFs 08/04 TWF Text Toxic weighting factor as of 8/2004

8 of 8