1 Economics Background Document Estimate of Potential National Economic Impact for the USEPA's Proposed Revisions to the 1981 " Headworks Exemption" of the RCRA Hazardous Waste Mixture Rule for Industrial Wastewater Treatment Systems Prepared by:

Mark Eads, Economist US Environmental Protection Agency Office of Solid Waste Economics, Methods & Risk Analysis Division 1200 Pennsylvania Avenue, NW ( Mailstop 5307W) Washington, DC 20460 USA Website: http:// www. epa. gov/ osw 18 December 2002 2 Preface This background document presents USEPA's estimates of the potential national economic impacts of the Office of Solid Waste's proposed revisions to the 1981 RCRA hazardous waste mixture rule " headworks exemption" ( Federal Register, Vol. 46, No. 221, 17 Nov 1981, pp. 56582 56589, and 40 CFR 261.3( a)( 2)( iv)( A E)). In general, this exemption applies to certain types of industrial wastewaters managed in wastewater treatment systems which meet certain influent and other conditions. For purposes of reducing unnecessary duplication and reader burden with the text of the Federal Register announcement and other background documents for the proposed rule, this document does not reproduce descriptive information about the regulatory features of the proposed rule. Consequently, the format of this document consists of tables, graphs, and spreadsheets containing numerical data, computations, and analytic findings, organized according to five impact components of the proposed rule:

! Spent Solvents: Add two F005 spent solvents ( i. e. benzene & 2 ethoxyethanol) to the headworks exemption for the RCRA headworks mixture rule. ! Scrubber Waters: Provide " headworks exemption" for F001 to F005 spent solvent hazardous waste combustion scrubber wastewaters. ! Direct Monitoring: Allow " direct monitoring" of F001 to F005 spent solvent waste concentrations in headworks influent wastewaters for exemption compliance, in lieu of " mass balance" computations. ! De Minimis: Revise the RCRA hazardous waste " de minimis" exemption to include RCRA F and K listed wastes. ! De Minimis: Revised the RCRA hazardous waste " de minimis" exemption to include non manufacturing facilities.

The economic impact estimates presented in this document are based upon either detailed deterministic or non detailed factoring computation methods, using an assortment of secondary data sources identified as references throughout this document. There is variability and uncertainty in the " typical" numeric values for some deterministic factors applied in this document, because many factors exhibit skewed ( i. e. non bell shaped) numerical distributions. In contrast to bellshaped data distributions which exhibit convergence in alternative central tendency measures which may be applied as indicators of " typical" values ( i. e. mean or average, median, mode, and distribution midpoint), skewed data distributions exhibit divergence in central tendency measures. Consequently, there is some inherent uncertainty and inaccuracy in the deterministic economic impact estimates presented in this document. Readers should interpret the impact findings presented in this document ( i. e. estimated count of potentially affected facilities, estimated annual quantities of affected RCRA hazardous wastes, and estimated national waste management baseline costs and potential waste management cost savings from the proposed rule), as " most likely" estimates. However, there is a non quantified probability that the actual impacts of the proposed rule ( if finalized as is), may be less than or greater than presented in this document. It is also important to note that although this document contains annual waste quantity data from sets of specific facilities which reported to USEPA ( as of 1997) generation and management of RCRA hazardous F002 and F005 aqueous spent solvent wastes and related combustion scrubber waters, all of these identified facilities may not be eligible for the proposed headworks exemptions because: ( a) the facilities may no longer generate and manage these types of RCRAhazardous wastes, or ( b) the facilities may not meet the conditions for the proposed exemptions. USEPA welcomes public review and comment on the data, factors, computations, and findings contained in this background document ( refer to the Federal Register announcement for the proposed rule for instructions on how to submit public comments). 3 Table of Contents Section Page I: Summary of Estimated Economic Impacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 II: Economic Impact Estimation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 III: Sensitivity Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 ! Future growth in industrial solvent use ! Headworks direct monitoring frequency IV: Supplementary Computation Tables & Spreadsheets . . . . . . . . . . . . . . . . . . . 21 IV. A: Regulatory Revision # 1: Benzene & 2 Ethoxyethanol F005 spent solvents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 IV. B: Regulatory Revision # 2: Scrubber wastewaters generated by F001 to F005 spent solvent combustion units . . . . . . . . . . . . . . . . 123 IV. C: Other Computation Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 V: Unit Costs & Other Computation Factors Applied in This Study . . . . . . . . . 145 4 Section I Summary of Estimated Economic Impacts 5 Summary of USEPA's Estimated Potential National Economic Impacts For Proposed Revisions to the 1981 " Headworks Exemption" for Industrial Wastewaters of the RCRA Hazardous Waste Mixture Rule ( 40 CFR 261.3( a)( 2)( iv)( A E))

Item Proposed Regulatory Revision to RCRA " Headworks Exemption" Count of Potentially Eligible Industrial Facilities Annual Quantity of Potentially Affected ( Eligible) RCRA Hazardous Waste ( tons/ year) Estimate of Economic Impact to Industry ( 2000$)

Average Annual Cost Savings ($/ year) Unitized Savings ($/ ton)

1 Add two F005 spent solvents ( benzene & 2 ethoxyethanol) to the headworks exemption* 115 to 1,800 facilities 0.036 to 0.594 million tons/ year spent solvent wastes ( aqueous & non aqueous forms) $ 0.32 to $ 5.65 million/ year in spent solvent waste management cost savings ( netting out implementation costs) $ 8.89 to $ 9.51/ ton 2 Provide the headworks exemption for F001 to F005 spent solvent hazardous waste combustion " scrubber waters" 3 to 9 facilities 0.203 to 0.610 million tons/ year scrubber wastewater $ 0.53 to $ 1.58 million/ year in scrubber wastewater management cost savings $ 2.59 to $ 2.61/ ton 3 Allow " direct monitoring" of F001 to F005 spent solvent at headworks, in lieu of " mass balance" computations 1,811 to 7,300 facilities 1.130 to 4.576 million tons/ year spent solvent wastes ( aqueous & non aqueous forms) $ 10.09 to $ 40.88 million/ year in spent solvent waste management cost savings $ 8.93/ ton 4 Revise RCRA hazardous waste " de minimis" exemption to include RCRA F & K listed wastes 71 facilities 30 tons/ year spill incidents ( haz waste + contaminated media or adsorbent) $ 0.026 million/ year in listed hazardous waste incidental spill response cost savings $ 867/ ton 5 Revise RCRA hazardous waste " de minimis" exemption to include nonmanufacturing facilities 1,266 facilities 570 tons/ year spill incidents ( haz waste + contaminated media or adsorbent) $ 0.475 million/ year in listed hazardous waste incidental spill response cost savings $ 833/ ton Column totals = 3,266 to 10,446 facilities** 1.37 to 5.78 million tons/ year $ 11.44 to $ 48.61 million/ year cost savings $ 8.35 to $ 8.41/ ton Present value @ 7% discount rate over 30 year future period*** > $ 129 to $ 547 million Potential annual reduction in state hazardous waste fees collected ( transfer effect between facilities and states, not national economic effect)**** = $ 6,000 to $ 86,000/ year Explanatory Notes: ( a) * Hypothetical expansion of the RCRA headworks exemption to include all four chemical solvents examined in the proposed rule, would likely result in addition of one wastestream with additional cost savings of about $ 19,000/ year ( consisting of 16,800 tons/ year aqueous spent solvent). ( b) ** Column total facilities is an overestimate because some facilities may be potentially affected by more than one regulatory revision. ( c) *** 1992 OMB guidance discount rate of 7% applied over 30 year future period of analysis ( 2004 to 2033) applied in this document to represent a medium term analytic period. ( d) **** Reduction in state hazardous waste fees collected based on: ( 1) disposal of derived from sludge quantities generated from treatment of potentially affected industrial wastewaters; ( 2) $ 26/ ton national average fee for hazardous waste ( sludge) disposal ( see supporting data in this document), ( 3) estimated range of 1,736 to 5,877 gallons industrial wastewater required to generate 1.0 ton sludge, and ( 4) applying the sludge: to: wastewater ratio to all affected waste quantities estimated in this document. 6 List of Economic Subsectors Potentially Affected by OSW's Proposed Revisions to the RCRA Hazardous Waste " Headworks Exemption" for Industrial Wastewaters Item Economic Subsector or Industry Identity Description SIC code NAICS code 1 02 112 Agricultural production  livestock 2 20 311 Food & kindred products 3 22 313 Textile mill products 4 24 321 Lumber & wood products 5 25 337 Furniture & fixtures 6 26 322 Paper & allied products 7 28 325 Chemicals & allied products 8 29 324 Petroleum & coal products 9 30 326 Rubber & miscellaneous plastics products 10 31 316 Leather & leather products 11 32 327 Stove, clay, glass & concrete products 12 33 331 Primary metal industries 13 34 332 Fabricated metal products 14 35 333 Industrial machinery & equipment 15 36 334, 335 Electrical & electronic equipment 16 37 336 Transportation equipment 17 38 3333, 3345 Instruments & related products 18 42 493 Motor freight transportation & warehousing 19 4581 48819, 56172 Airports, flying fields, & airport terminal services 20 4789 488999 Transportation services nec 21 49 221 Electric, gas, & sanitary services 22 50 421 Wholesale trade  durable goods 23 51 422 Wholesale trade  nondurable goods 24 5999 453998 Miscellaneous retail 25 721 8123 Dry cleaning & industrial laundry services 26 73 514, 532, 541, 561 Business services 27 80 621, 622, 623 Health services 28 87 712 Engineering & management services 29 8999 54162 Miscellaneous services 30 91 921 Executive, legislative & general government 31 95 924, 925 Environmental quality & housing 32 97 928 National security & international affairs ( a) This list is based upon: ( 1) industry codes reported to the USEPA RCRA hazardous waste 1997 " Biennial Reporting System" database by F002/ F005 aqueous spent solvent generators which manage such wastes onsite or offsite in wastewater treatment systems, and ( 2) industry codes which have USEPA Clean Water Act " Categorical Pretreatment Standards" for indirect discharge of industrial wastewaters to POTWs ( as of July 2002). ( b) Office of Solid Waste matched 1987 SIC codes to 1997 NAICS codes using US Census Bureau's website: http:// www. census. gov/ epcd/ naics/ nsic2ndx. htm# S0 7 Section II Economic Impact Estimation Table 8 Computations Applied for Estimating Potential National Economic Impacts for OSW's Proposed Revisions to the 1981 " Headworks Exemption" for Industrial Wastewaters ! Introduction: This table provides the main computations of economic impacts in this document. Other tables which follow this one provide detailed data and supplemental computations.

! Computation Factors: Some economic impact estimates ( i. e. affected facility counts, waste quantities, cost savings) in this table represent an uncertainty range based on two alternative impact estimates. The primary source applied in this document for estimating affected facilities and waste quantities is the USEPA 1997 Hazardous Waste Biennial Report http:// www. epa. gov/ enviro/ html/ brs/ brs_ query. html: ! " Upper Bound": based on all facilities known to manage types of wastes potentially affected by one or more features of the headworks proposed rule. ! " Lower Bound": based on smaller subset of facilities after subtracting fractions of facilities which may not meet one or more of the following: 88% Fraction of facilities estimated to achieve minimum break even cost for assessing headworks concentration using " mass balance" ( in comparison, 80% of facilities estimated to exceed break even with " direct monitoring" at minimum of four samples/ month). Source: calculated in spreadsheets included in this document. 58% Fraction of non hazardous waste industrial surface impoundments which have waste aeration eligibility condition for benzene headworks exemption ( Regulatory Revision # 1). Source: data on 14 aeration methods from the USEPA Office of Solid Waste " Industrial Surface Impoundments in the United States", EPA 530 R 01 005, March 2001, http:// www. epa. gov/ epaoswer/ hazwaste/ ldr/ icr/ ldr impd. htm. 40% Fraction of non hazardous waste industrial surface impoundments have liner eligibility condition for benzene headworks exemption ( Regulatory Revision # 1). Source: data on liners made with eight classes of materials from the USEPA Office of Solid Waste " Industrial Surface Impoundments in the United States", EPA 530 R 01 005, March 2001, http:// www. epa. gov/ epaoswer/ hazwaste/ ldr/ icr/ ldr impd. htm. 31% Fraction of industrial facilities which currently have solvent influent concentrations in industrial wastewater under 1ppm ( 0% to 33% of facilities) or 25ppm ( 8% to 43% of facilities) headworks exemption thresholds ( mean for both 1ppm and 25pmm = 27%, 1 ppm benzene = 31%, which is used as single value proxy for headworks solvents in this document). Source: industrial wastewater influent concentration data in the USEPA 1999 " Toxics Release Inventory" for the four solvents considered in the headworks proposed rule ( table with TRI data findings provided in this document), http:// www. epa. gov/ enviro/ html/ tris/ adhoc. html. ! Some of the other quantitative factors applied in the computations in this table include: 39% Fraction of industrial facilities have Clean Water Act industrial wastewater discharge permits ( unknown % of CWA permits which address headworks solvents). Source: table with reference data and computation of this factor provided in this document. 28% Factor applied to Regulatory Revision # 5 ( extending " de minimis" exemption to non manufacturing facilities) represents the ratio of nonmanufacturing to: manufacturing facilities which managed onsite F and/ or K listed RCRA hazardous wastes, based on the USEPA Office of Solid Waste 1996 " National Hazardous Waste Constituent Survey" database, based on a sample of 527 RCRA hazardous wastestreams ( 85.6 million tons in 1993) reported by waste management facilities which participated in the NHWCS ( see item # 4 on USEPA webpage http:// www. epa. gov/ epaoswer/ hazwaste/ id/ hwirwste/ economic. htm). 1.7% Fraction of RCRA hazardous waste generator ( LQG) facilities which report incidental releases of spent solvents into industrial wastewaters. Source: USEPA Emergency Response Notification System ( ERNS) database maintained at the National Response Center http:// www. nrc. uscg. mil/ index. html. ! For regulatory revisions # 1 and # 3 in this table which affect spent solvents, this study defines three physical form categories of spent solvents that may be affected: ! AS/ WWT: Aqueous spent Solvents managed in WasteWater Treatment systems: Facilities which currently manage headworks exemption eligible aqueous ( BRS form codes = B101 and/ or B201) spent solvent wastes in onsite tank based wastewater treatment systems operating under Clean Water Act permits. With the headworks exemption, these facilities may also switch the onsite management of these wastes from tank based system, to non hazardous wastewater management systems ( e. g. surface impoundments). ! AS/ OM: Aqueous spent Solvents managed in Other waste Management units: Facilities which do not currently manage aqueous spent solvent wastes ( B101 or B201) in onsite tank based wastewater systems, but manage in other onsite types of aqueous/ liquid waste management units ( e. g. liquid combustion units or deepwell injection), or manifest and transport these wastes to offsite hazardous waste management facilities. With the headworks exemption, these facilities may also switch these other types of wastes, to non hazardous wastewater management systems ( e. g. surface impoundments). ! OLS/ ANYM: Other Liquid ( inorganic & organic) forms of spent Solvents managed in ANY waste Management system: Facilities which currently manage other liquid physical forms ( i. e. BRS form codes = B202, B203 and/ or B204) of spent solvent wastes, which may claim the headworks exemption by shifting their current management of non aqueous spent solvents, to non haz waste management systems. This category excludes other physical forms of RCRA hazardous wastes which carry spent solvent wastecodes, such as: ( 1) other types of liquids not defined as " solvents", ( 2) sludges, and ( 3) solids.

! Methodology: The main economic effect estimated in this document is the potential for affected facilities which currently manage hazardous waste, to claim the proposed exemptions and switch eligible wastes to non hazardous waste management systems. The economic impact of this potential switch is simulated in this document as the difference in cost between RCRApermitted hazardous waste systems, and the alternative. The waste management average unit cost ($/ ton) assumptions applied in this study are provided in spreadsheets & tables containing supporting unit cost data & computations elsewhere in this document. 9 Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

REGULATORY REVISION # 1: Revise RCRA " headworks exemption" to include additional RCRA F listed spent solvents ( two options):

! Option # 1A: Add Two Solvents ! Potential Impact on AS/ WWT ( aqueous spent solvents currently managed in wastewater treatment systems): ! Upper Bound: ! Spent solvent wastewater treatment cost savings ( if currently managed in a wastewater treatment tank system) ! 175 RCRA hazardous waste large quantity generators ( LQGs) or treatment, storage, disposal facilities ( TSDFs) , identified as managing 383 wastestreams of aqueous F002 or F005 spent solvent wastes in onsite or offsite wastewater treatment systems ( source: 1997 BRS query using B101 & B201 aqueous solvent form codes, and M071 M099, M121 M123, & M133 M136 waste system codes as query criteria). ! 110 of the 175 facilities manage F005 spent solvents ( which may contain benzene or 2 ethoxyethanol according to the RCRA wastecode definition). ! 25 facilities of these 110 facilities ( 23%) are known to manage 58 wastestreams with either F005 benzene or F005 2 ethoxyethanol spent solvents, which represents an average of 2.2 wastestreams per facility ( see attached spreadsheets).

! Lower Bound: ! Lower bound nets out the following four considerations: ! 22 of the 25 facilities ( 88%) estimated to exceed " mass balance" break even cost savings threshold ( 80% meet " direct monitoring" break even threshold @ 4 samples/ month). ! 58% of industrial surface impoundments have aerated systems ! 40% of industrial surface impoundments have liners ! 31% of industrial wastewater influent benzene is < 1ppm ! ( 25 facilities) x 88% x 58% x 40% x 31% = 2 facilities ! Upper Bound: ( source: 1996 NHWCS) ! 451,000 tons/ year benzene aqueous spent solvents + 27,000 tons/ year 2 ethoxyethanol aqueous spent solvents = 594,000 tons/ year ! B101 + B201 aqueous solvent forms = 76.1% ! 594,000 tons/ year x 76.1% = 0.452 million tons/ year ( includes both AS/ WWT + AS/ OM) ! For AS/ WWT fraction, apply respective AS/ WWT: to: AS/ OM ratio from lower bound estimates: ( 0.452 million tons/ year) x [ 0.014 / ( 0.014+ 0.042)] = 0.113 million tons ! Lower Bound ( source: 1997 BRS): ! 51.5 million tons aqueous RCRA hazardous wastecode F002 & F005 spent solvents managed in wastewater treatment systems annually ( source: USEPA 1997 Hazardous Waste Biennial Report http:// www. epa. gov/ enviro/ html/ brs/ brs_ query. html). ! 0.193 million tons/ year associated with the 52 wastestreams at 25 facilities known to contain F005 benzene or F005 2 ethoxyethanol and meet " mass balance" break even cost threshold ( see attached spreadsheets). ! Represents average 8,800 tons/ year per facility ( 0.193 million tons/ year)/( 22 facilities) ! Lower bound nets out the following three additional considerations: ! 58% of industrial surface impoundments have aerated systems ! 40% of industrial surface impoundments have liners ! 31% of industrial wastewater influent benzene is < 1ppm ! ( 0.193 million tons) x 58% x 40% x 31% = 0.014 million tons ! Upper Bound: ! Net savings estimate for reference 25 facilities from lowerbound below, scaled up according to respective waste ratio ( 0.452 / 0.193 million tons): ($ 1.724 million/ year) x ( 0.452/ 0.193) = $ 4.038 million/ year ! Lower Bound: ! $ 1.734 million annual cost savings for wastewater management under " mass balance" break even test ( see computation spreadsheets based on BRS waste quantities in this document which net out cost of " mass balance"). ! Average annual savings of $ 79,000 per facility [($ 1.734 million/ year) / ( 22 facilities)]. ! Assumes that claimants with co mingled wastecodes can segregate spent solvents. ! Includes facilities which transport aqueous spent solvents for offsite wastewater treatment ( i. e. savings may accrue in part or whole to offsite waste management facilities). ! Exemption paperwork burden costs ( for reading the rule + preparing/ submitting headworks sampling plan to states + maintaining direct monitoring record) of $ 412 per facility ( source: 26 Sept 2002 draft of the " Information Collection Request" for the proposed rule), and of $ 25 in cost to RCRAauthorized states per facility ( claimant) for review of exemption claims = $ 10,000 in annual implementation cost [( 22 facilities) x ($ 437)]. ! Net cost savings: $ 1.734  $ 0.010 = $ 1.724 million/ year ! To create lower bound, scaled down according to same three additional limiting factors applied in facility count and waste quantity estimates: ($ 1.724 million/ year) x 58% x 40% x 31% = $ 0.124 million/ year Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

10 ! Potential impact on AS/ OM: ( aqueous spent solvents currently managed in other types of waste management systems).

! Upper Bound: ! In addition to the 110 F005 managing facilities identified above under " AS/ WWT", there are 300 facilities ( LQGs) which manage F005 spent solvent aqueous wastes ( BRS form codes = B101 & B201) either onsite or offsite in different types of aqueous/ liquid waste management systems ( e. g. liquid waste combustion or liquid waste underground injection deepwells). ! Applying the same two solvent ( benzene & 2 ethoxyethanol) 23% fraction from AS/ WWT, produces an estimate of 69 facilities ( 300 x 23%).

! Lower Bound: ! Lower bound nets out the following four considerations: ! 88% of facilities estimated to exceed " mass balance" breakeven cost savings threshold. ! 58% of industrial surface impoundments have aerated systems ! 40% of industrial surface impoundments have liners ! 31% of industrial wastewater influent benzene is < 1ppm ! ( 69 facilities) x 88% x 58% x 40% x 31% = 5 facilities ! Upper Bound ( source: 1996 NHWCS): ! Residual from upper bound above for AS/ WWT: ( 0.452  0.113 million tons/ year) = 0.339 million tons ! Lower Bound ( source: 1997 BRS): ! The upper bound 300 facilities manage 0.181 million tons/ year. ! Represents an average of 600 tons/ year per facility. ! Applying the same two solvent ( benzene & 2 ethoxyethanol) 23% fraction from AS/ WWT, produces an estimate of 0.042 million tons/ year potentially affected spent solvent waste quantity ( 0.181 million tons x 23%). ! Lower bound nets out the following four considerations: ! 88% of facilities estimated to exceed " mass balance" break even cost savings threshold. ! 58% of industrial surface impoundments have aerated systems ! 40% of industrial surface impoundments have liners ! 31% of industrial wastewater influent benzene is < 1ppm ! ( 0.042 million tons) x 88% x 58% x 40% x 31% = 0.003 million tons ! Upper Bound: ! $ 0.372 million cost savings for wastewater management ( this estimate based on proportioning relative to AS/ WWT, according to average affected waste quantity per facility: [( 69 facilities) x ($ 79,000/ facility) x ( 600 tons/ facility / 8,800 tons/ facility)]. ! Exemption notification paperwork burden costs ( for reading the rule + preparing/ submitting headworks sampling plan to states + maintaining direct monitoring record) of $ 412 per facility ( source: " Information Collection Request" for the proposed rule), and of $ 25 in cost to RCRA authorized states per facility ( claimant) for review of exemption claims = $ 30,200 in annual implementation cost ( 69 facilities x $ 437). ! Net cost savings = $ 0.372  $ 0.030 = $ 0.342 million/ year.

! Lower Bound: ! $ 0.027 million cost savings for wastewater management ( this estimate based on proportioning relative to AS/ WWT, according to average affected waste quantity per facility: [( 5 facilities) x ($ 73,000/ facility) x ( 600 tons AS/ OM per facility) / ( 8,800 AS/ WWT per facility)]. ! Exemption notification paperwork burden costs ( for reading the rule + preparing/ submitting headworks sampling plan to states + maintaining direct monitoring record) of $ 412 per facility ( source: " Information Collection Request" for the proposed rule), and of $ 25 in cost to RCRA authorized states per facility ( claimant) for review of exemption claims = $ 2,200 in annual implementation cost ( 5 facilities x $ 437). ! Net cost savings = $ 0.027  $ 0.002 = $ 0.025 million/ year. Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

11 ! Potential impact on OLS/ ANYM: ( other liquid forms of spent solvents currently managed in any type of waste management system).

! Upper Bound: ! 7,435 facilities ( LQGs) generate F005 spent solvent in other physical forms ( i. e. in addition to the aqueous solvent form codes B101 & B201; source: 1997 BRS). ! Applying the same two solvent 23% fraction from the AS/ WWT impact, produces an estimate of 1,710 facilities ( 23% x 7,435) may involve F005 benzene or F005 2 ethoxyethanol spent solvents.

! Lower Bound: ! Lower bound nets out the following four considerations: ! 88% of facilities estimated to exceed " mass balance" breakeven cost savings threshold. ! 58% of industrial surface impoundments have aerated systems ! 40% of industrial surface impoundments have liners ! 31% of industrial wastewater influent benzene is < 1ppm ! ( 1,710 facilities) x 88% x 58% x 40% x 31% = 108 facilities ! Upper Bound ( source: 1996 NHWCS): ! 451,000 tons/ year benzene aqueous spent solvents + 27,000 tons/ year 2 ethoxyethanol aqueous spent solvents = 594,000 tons/ year ! other liquid solvent forms = 100% 76.1% = 23.9% ! 594,000 tons/ year x 23.9% = 0.142 million tons/ year ! Lower Bound ( source: 1997 BRS): ! The upper bound 7,435 facilities generate 23.425 million tons/ year of F005 spent solvent in other forms. ! 0.083 million tons of the 23.425 million tons/ year other forms of F005 spent solvents, is other liquid solvent form ( i. e. BRS formcodes = B202, B203 or B204), and not managed in recovery systems ( M02x, M03x, M05x or M06x BRS system codes; this document assumes this fraction currently recovered will continue rather than switch to non hazardous wastewater systems as a result of the headworks rule). ! Applying the same two solvent ( benzene & 2 ethoxyethanol) 23% fraction from the AS/ WWT impact, produces an estimate of 0.019 million tons/ year potentially affected spent solvent waste quantity ( 0.083 million tons x 23%). ! Upper Bound: ! $ 1.268 million/ year cost savings, based on spreadsheet cost savings reference estimated in proportion to $ 1.724 million/ year AS/ WWT cost savings for 0.193 million tons, scaled according to relative annual waste quantities potentially affected: [( 0.142 million tons/ year OLS/ ANYM) / ( 0.193 million tons/ year AS/ WWT) x ($ 1.724 million/ year AS/ WWT savings)]

! Lower Bound: ! $ 0.170 million/ year cost savings, based on spreadsheet cost savings reference estimated in proportion to $ 1.724 million/ year AS/ WWT cost savings for 0.193 million tons, scaled according to relative annual waste quantities potentially affected: [( 0.019 million tons/ year OLS/ ANYM) / ( 0.193 million tons/ year AS/ WWT) x ($ 1.724 million/ year AS/ WWT savings)]

Option # 1A subtotals: ! Upper Bound: 115 facilities ! Lower Bound: 1,800 facilities ! Upper Bound: 0.594 million tons/ year ! Lower Bound: 0.036 million tons/ year ! Upper Bound: $ 5.648 million / year cost savings ! Lower Bound: $ 0.319 million/ year cost savings Note: Lowering the cost to facilities for using benzene as an industrial solvent by adding it to the RCRA hazardous waste mixture headworks exemption, may act as an indirect market signal which induces some facilities to switch away from using relatively higher cost solvents, to begin using benzene as a substitute solvent. However, according to US average price data on 43 chemicals which have been used as industrial solvents ( see data table attachment to this document), benzene is the lowest priced chemical ($ 0.75/ gallon), compared to 42 other chemicals which range in average price from $ 1.11/ gallon to $ 6.19/ gallon. Consequently, facilities which are motivated to use benzene as a solvent based its relative price rather than on its chemical properties are expected to already use it. On a unitized basis, the estimated cost savings in this table above is equivalent to a cost reduction of $ 0.04 per gallon of spent solvent [($ 2.228 million/ year) / ( 0.251 million tons) x ( 1 ton// 2000lbs) x ( 8.34 lbs/ gal)], including the quantity of other solvent co contaminant materials in the waste ( e. g. water). Because ( a) benzene is already apparently the lowest cost solvent chemical, and ( b) the estimated unitized regulatory cost savings represents a relatively small 0.6% to 3.6% change compared to the range in price for other solvent chemicals ( i. e. $ 0.04/$ 1.11 = 3.6%; $ 0.04/$ 6.19 = 0.6%), EPA does not expect many facilities to be induced to use benzene as a substitute solvent, as a result of this proposed rule.

! Option # 1B: Add Four Solvents Hypothetical if all four spent solvents added to exemption ( F005 benzene & F005 2 ethoxyethanol & F005 2 nitro propane & F002 1,1,2 TCE) ! Same types of effects as Option # 1A. ! Only one additional wastestream identified as potentially eligible, relative to the count of facilities under Option # 1A. ! Estimated to add 17,000 tons compared to Option # 1A ( a single additional wastestream identified in the 1997 BRS data). ! Similar level of cost savings compared to Option # 1A ( i. e. within +/ 5% estimation uncertainty). Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

12 REGULATORY REVISION # 2: Revise RCRA " headworks exemption" to include F001 to F005 spent solvent hazardous waste combustion " scrubber waters":

! Wastewater treatment cost savings ! Upper Bound: ! 24 LQG facilities reported generating 45 scrubber water wastestreams ( source: based on July 2002 USEPA Office of Solid Waste list of 73 facilities known to operate 119 RCRA haz waste combustion units which generate scrubber waters, and 1997 BRS database query). ! 9 facilities report combustion of F001 to F005 spent solvents ( 11 wastestreams).

! Lower Bound: ! Lower bound nets out the following two considerations: ! 100% of F001 to F005 scrubber wastestreams estimated to exceed " mass balance" break even cost savings threshold. ! 31% of industrial wastewater influent is < headworks thresholds ! ( 9 facilities) x 100% x 31% = 3 facilities ! Upper Bound: ! 15.3 million tons/ year all types of scrubber wastewaters reported by the reference 73 facilities ( source: July 2002 OSW list   see supporting spreadsheet in this document). ! 0.610 million tons/ year F001 to F005 scrubber wastewaters reported by the 9 facilities ( based on 1997 BRS data   see supporting spreadsheets in this document).

! Lower Bound: ! Estimate based on proportioning upper bound quantity by relative number of facilities: ( 0.610 million ton/ syear) x ( 3 facility / 9 facilities) = 0.203 million tons/ year ! Upper Bound: ! $ 1.582 million annual cost savings ( see supporting computation spreadsheets in this document). ! Represents an average of $ 198,000 savings per facility.

! Lower Bound: ! Estimate based on proportioning relative to upper bound waste quantity: ($ 1.582 million/ year) x ( 0.203/ 0.610 million tons) = $ 0.526 million/ year REGULATORY REVISION # 3: Revise the RCRA " headworks exemption" compliance monitoring method: Allow " direct monitoring" of F001 to F005 spent solvent concentrations in headworks influent wastewaters, in lieu of " mass balance" computations:

! Potential impacts on AS/ WWT & AS/ OM: ! Upper Bound: ! About 600 facilities ( LQGs) generate aqueous & liquid forms of F001 to F005 spent solvents ( source: 1997 BRS form codes = B101, B201, B202, B203 or B204). ! F001 to F005 spent solvent wastes for which facilities already claim the 1981 headworks exemption are excluded from these 600 facilities, by fact that the BRS only includes RCRA hazardous wastes. ! 94 facilities ( 25 + 69) already accounted for in Option # 1( A) above, yields 506 facilities.

! Lower Bound: ! Similar to the estimation method applied to the F005 solvents examined for Regulatory Revision option # 1( A) in this table, the lower bound nets out the following two considerations: ! 80% of facilities estimated to exceed " direct monitoring" breakeven cost savings threshold. ! 31% of industrial wastewater influent is < headworks thresholds ! ( 506 facilities) x 80% x 31% = 125 facilities ! Upper Bound: ! 61.8 million tons/ year of F001 to F005 spent solvents generated ( 1997 BRS; all waste forms & all waste systems). ! 34.9 million tons/ year of aqueous F001 to F005 spent solvents ( BRS codes = B101 or B201) not managed in waste recovery units ( BRS system codes = M02x, M03x, M05x or M06x). ! [( 506 affected facilities) x ( 8,800 tons/ year/ facility from Regulatory Revision option # 1( A) for AS/ WWT)] = 4.453 million tons/ year.

! Lower Bound: ! Estimate based on proportioning upper bound quantity by relative number of facilities: ( 4.453 million ton/ syear) x ( 125 facility / 506 facilities) = 1.100 million tons/ year ! Upper Bound: ! Per facility average cost of " direct monitoring" dependent upon monitoring frequency ( number of samples per month). ! At assumed minimum rate of four samples/ month ( minimum required for CWA discharge permit compliance), per facility average annual cost for " direct monitoring" = $ 4,680/ year. ! This cost is three times higher than the estimated $ 1,440 per facility average annual cost for " mass balance" demonstration. ! $ 39.777 million/ year potential cost savings estimated in proportion to Regulatory Revision option # 1( A) AS/ WWT reference cost savings, according to relative annual waste quantities potentially affected: [( 4.453 / 0.193 million tons/ year) x ($ 1.724 million/ year cost savings)].

! Lower Bound: ! Estimate based on proportioning relative to upper bound waste quantity: ($ 39.777 million/ year) x ( 1.100/ 4.453 million tons) = $ 9.826 million/ year Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

13 ! Potential Impact on OLS/ ANYM: ! Upper Bound: ! About 8,600 facilities generate other liquid forms ( i. e. B202, B203, B204) of F001 to F005 spent solvents ( source: 1997 BRS). ! 1,800 facilities already accounted for in Regulatory Revision option # 1( A) OLS/ ANYM above, yields 6,800 facilities ( 8,600  1,800).

! Lower Bound: ! Similar to the estimation method applied to the F005 solvents examined for Regulatory Revision option # 1( A) in this table, the lower bound nets out the following two considerations: ! 80% of facilities estimated to exceed " direct monitoring" breakeven cost savings threshold. ! 31% of industrial wastewater influent is < headworks thresholds ! ( 6,800 facilities) x 80% x 31% = 1,686 facilities ! Upper Bound: ! 0.123 million tons/ year of other liquid F001 to F005 spent solvents ( BRS codes = B202, B203 or B204) not managed in waste recovery units ( source: 1997 BRS system codes = M02x, M03x, M05x or M06x).

! Lower Bound: ! Estimate based on proportioning upper bound quantity by relative number of facilities: ( 0.123 million ton/ syear) x ( 1,686 facility / 6,800 facilities) = 0.030 million tons/ year ! Upper Bound: ! $ 1.099 million/ year potential cost savings estimated in proportion to Regulatory Revision option # 1( A) AS/ WWT cost savings, according to relative annual waste quantities potentially affected: [( 0.123 / 0.193 million tons/ year) x ($ 1.724 million/ year cost savings)].

! Lower Bound: ! $ 0.268 million/ year potential cost savings estimated in proportion to Regulatory Revision option # 1( A) AS/ WWT cost savings, according to relative annual waste quantities potentially affected: [( 0.030 / 0.193 million tons/ year) x ($ 1.724 million/ year cost savings)].

Subtotal regulatory revision # 3 = 1,811 to 7,300 facilities 1.130 to 4.576 million tons/ year $ 10.094 to $ 40.876 million/ year cost savings REGULATORY REVISION # 4: Revise RCRA " de minimis" exemption: Expand the exemption to include additional types of RCRA hazardous wastes:

! Revise to include RCRA F & K listed hazardous wastes ! Potential economic impact modeled as difference in cost between segregating & separately managing these " de minimis" releases as RCRA hazardous wastes, compared to draining or washing these releases into an onsite non hazardous wastewater treatment system. ! 10,670 manufacturing & non manufacturing facilities ( LQGs) generate F & K listed wastes ( 1997 BRS). ! Assume 39% have CWA wastewater permits ( 10,670 x 39% = 4,161); ( source: see supporting spreadsheets). ! Assume 1.7% of LQGs involve incidental releases ( source: ERNS database); 4,161 x 1.7% = 71 facilities ! 0.15 tons per RCRA waste spill incident ( source: median reported to the National Response Center database for 1990 2002   see attached spreadsheets). ! Assume co contaminated soil or adsorbent quantity multiplier = 3. ! ( 71 facilities/ year) x ( 0.15 tons/ spill) x 3 = 32 tons/ year ! Cost if management as RCRA haz waste: ! $ 18/ ton to truck transport material ! $ 300/ incident for a RCRA manifest ( see attached spreadsheet) ! $ 260/ ton cost** to either commercially incinerate or commercially landfill material ! Haz cost = (($ 18/ ton + $ 260/ ton) x 32 tons) + (( 71 incidents/ year) x ($ 300/ incident) = $ 0.030 million/ year cost. ! Cost if manage as non haz material: ! Average $ 50 labor cost** per incident to wash into non haz wastewater system ! Non haz cost = ($ 50/ incident x 71 incidents/ year) = $ 0.004 million/ year cost. ! Potential material management cost savings: ($ 0.030  $ 0.004 million/ year) = $ 0.026 million/ year cost savings REGULATORY REVISION # 5: Revise RCRA " de minimis" exemption: Expand the exemption to include additional types of facilities: Estimated Count of Potentially Affected Entities Estimated Quantity of RCRA Hazardous Industrial Waste Potentially Affected ( tons/ year) Estimated Potential Average Annual Impact ($/ year)

14 ! Revise to include non manufacturing facilities ! Difference in cost between segregating & separately managing these releases as RCRA hazardous wastes, compared to draining or washing these releases into an onsite non hazardous wastewater treatment system. ! Total of 77,444 non manufacturing facilities with CWA wastewater permits ( source: based on OSW analysis of USEPA Office of Water data presented in attached spreadsheets). ! 2,990 non manufacturing LQGs counted above for F & Klisted wastes ( 28%*** x 10,670), which produces 74,454 nonoverlapping count ( 77,444  2,990) ! Assume 1.7% involve incidental releases ( same assumption as for LQGs from ERNS); 74,454 x 1.7% = 1,266 facilities ! Assume 0.15 tons per incident & multiplier factor = 3 ( from above). ! ( 1,266 facilities/ year) x ( 0.15 tons/ spill) x 3 = 570 tons/ year ! Same per incident unit cost assumptions as above. ! Cost if manage as haz waste: $ 0.538 million/ year ! Cost if manage as non haz material cost: $ 0.063 million/ year ! Potential material management cost savings: ($ 0.538  $ 0.063 million/ year) = $ 0.475 million annual cost savings COLUMN TOTALS ( Revisions # 1 to # 5): Note: may include some double counting of facilities affected by more than one of the five regulatory revision impacts monetized in this document.

Totals w/ Option # 1A = 3,266 to 10,446 facilities 1.37 to 5.78 million tons/ year $ 11.44 to $ 48.61 million/ year cost savings 15 Section III Sensitivity Analyses ! Future Annual Growth in Industrial Spent Solvents ! Headworks Direct Monitoring Frequency: F005 benzene & 2 ethoxyethanol spent solvents F001 to F005 combustion scrubber wastewaters 16 Sensitivity Analysis: Growth in Future Annual Generation Quantities of F001 to F005 Spent Solvents Subject to RCRA Headworks Exemption for Industrial Wastewaters ($ millions)

Row item Year Growth rate multiplier Revision # 1 Revision # 2 Revision # 3 Revision # 4 Revision # 5 Row Totals Lower bound Upper bound Lower bound Upper bound Lower bound Upper bound Lower bound Upper bound 1 2004 1.0000 $ 0.319 $ 5.648 $ 0.526 $ 1.582 $ 10.094 $ 40.876 $ 0.026 $ 0.475 $ 11.440 $ 48.607 2 2005 1.0073 $ 0.321 $ 5.689 $ 0.530 $ 1.594 $ 10.168 $ 41.174 $ 0.026 $ 0.478 $ 11.523 $ 48.962 3 2006 1.0146 $ 0.324 $ 5.730 $ 0.534 $ 1.605 $ 10.241 $ 41.473 $ 0.026 $ 0.482 $ 11.607 $ 49.316 4 2007 1.0219 $ 0.326 $ 5.772 $ 0.538 $ 1.617 $ 10.315 $ 41.771 $ 0.027 $ 0.485 $ 11.690 $ 49.671 5 2008 1.0292 $ 0.328 $ 5.813 $ 0.541 $ 1.628 $ 10.389 $ 42.069 $ 0.027 $ 0.489 $ 11.774 $ 50.026 6 2009 1.0365 $ 0.331 $ 5.854 $ 0.545 $ 1.640 $ 10.462 $ 42.367 $ 0.027 $ 0.492 $ 11.857 $ 50.380 7 2010 1.0438 $ 0.333 $ 5.895 $ 0.549 $ 1.651 $ 10.536 $ 42.666 $ 0.027 $ 0.496 $ 11.941 $ 50.735 8 2011 1.0511 $ 0.335 $ 5.936 $ 0.553 $ 1.663 $ 10.610 $ 42.964 $ 0.027 $ 0.499 $ 12.024 $ 51.090 9 2012 1.0584 $ 0.338 $ 5.978 $ 0.557 $ 1.674 $ 10.683 $ 43.262 $ 0.028 $ 0.503 $ 12.108 $ 51.444 10 2013 1.0657 $ 0.340 $ 6.019 $ 0.561 $ 1.686 $ 10.757 $ 43.560 $ 0.028 $ 0.506 $ 12.191 $ 51.799 11 2014 1.0730 $ 0.342 $ 6.060 $ 0.564 $ 1.697 $ 10.831 $ 43.859 $ 0.028 $ 0.510 $ 12.275 $ 52.154 12 2015 1.0803 $ 0.345 $ 6.101 $ 0.568 $ 1.709 $ 10.904 $ 44.157 $ 0.028 $ 0.513 $ 12.358 $ 52.508 13 2016 1.0876 $ 0.347 $ 6.143 $ 0.572 $ 1.721 $ 10.978 $ 44.455 $ 0.028 $ 0.517 $ 12.442 $ 52.863 14 2017 1.0949 $ 0.349 $ 6.184 $ 0.576 $ 1.732 $ 11.051 $ 44.753 $ 0.028 $ 0.520 $ 12.525 $ 53.218 15 2018 1.1022 $ 0.352 $ 6.225 $ 0.580 $ 1.744 $ 11.125 $ 45.052 $ 0.029 $ 0.524 $ 12.609 $ 53.572 16 2019 1.1095 $ 0.354 $ 6.266 $ 0.584 $ 1.755 $ 11.199 $ 45.350 $ 0.029 $ 0.527 $ 12.692 $ 53.927 17 2020 1.1167 $ 0.356 $ 6.307 $ 0.587 $ 1.767 $ 11.272 $ 45.648 $ 0.029 $ 0.530 $ 12.776 $ 54.282 18 2021 1.1240 $ 0.359 $ 6.349 $ 0.591 $ 1.778 $ 11.346 $ 45.946 $ 0.029 $ 0.534 $ 12.859 $ 54.636 19 2022 1.1313 $ 0.361 $ 6.390 $ 0.595 $ 1.790 $ 11.420 $ 46.245 $ 0.029 $ 0.537 $ 12.943 $ 54.991 20 2023 1.1386 $ 0.363 $ 6.431 $ 0.599 $ 1.801 $ 11.493 $ 46.543 $ 0.030 $ 0.541 $ 13.026 $ 55.346 21 2024 1.1459 $ 0.366 $ 6.472 $ 0.603 $ 1.813 $ 11.567 $ 46.841 $ 0.030 $ 0.544 $ 13.109 $ 55.700 22 2025 1.1532 $ 0.368 $ 6.513 $ 0.607 $ 1.824 $ 11.641 $ 47.139 $ 0.030 $ 0.548 $ 13.193 $ 56.055 23 2026 1.1605 $ 0.370 $ 6.555 $ 0.610 $ 1.836 $ 11.714 $ 47.438 $ 0.030 $ 0.551 $ 13.276 $ 56.410 24 2027 1.1678 $ 0.373 $ 6.596 $ 0.614 $ 1.847 $ 11.788 $ 47.736 $ 0.030 $ 0.555 $ 13.360 $ 56.764 25 2028 1.1751 $ 0.375 $ 6.637 $ 0.618 $ 1.859 $ 11.862 $ 48.034 $ 0.031 $ 0.558 $ 13.443 $ 57.119 26 2029 1.1824 $ 0.377 $ 6.678 $ 0.622 $ 1.871 $ 11.935 $ 48.333 $ 0.031 $ 0.562 $ 13.527 $ 57.474 27 2030 1.1897 $ 0.380 $ 6.720 $ 0.626 $ 1.882 $ 12.009 $ 48.631 $ 0.031 $ 0.565 $ 13.610 $ 57.828 28 2031 1.1970 $ 0.382 $ 6.761 $ 0.630 $ 1.894 $ 12.083 $ 48.929 $ 0.031 $ 0.569 $ 13.694 $ 58.183 29 2032 1.2043 $ 0.384 $ 6.802 $ 0.633 $ 1.905 $ 12.156 $ 49.227 $ 0.031 $ 0.572 $ 13.777 $ 58.538 30 2033 1.2116 $ 0.387 $ 6.843 $ 0.637 $ 1.917 $ 12.230 $ 49.526 $ 0.032 $ 0.576 $ 13.861 $ 58.892 Non discounted total = $ 10.58 $ 187.37 $ 17.45 $ 52.48 $ 334.86 $ 1,356.02 $ 0.86 $ 15.76 $ 379.51 $ 1,612.49 Net Present Value @ 7% = $ 6.81 $ 120.65 $ 11.24 $ 33.79 $ 215.62 $ 873.18 $ 0.56 $ 10.15 $ 244.38 $ 1,038.32 Average Annual Equivalent = $ 0.35 $ 6.16 $ 0.57 $ 1.72 $ 11.00 $ 44.55 $ 0.03 $ 0.52 $ 12.47 $ 52.97 17 Sensitivity Analysis Trade Off Between Headworks Exemption " Direct Monitoring" Frequency/ Cost for F005 Benzene & F005 2 Ethoxyethanol, and Aqueous Spent Solvent Waste Management Cost Savings Headworks Direct Monitoring: Alternative Frequencies ( number of wastewater samples) Average annual direct monitoring cost* per facility ($/ year) 58 wastestreams managed by 25 facilities known to generate and/ or manage F005 benzene or F005 2 ethoxyethanol spent solvent wastestreams Percent of waste streams > breakeven Count of waste streams > breakeven Average annual savings per waste stream ($/ year) National aggregate spent solvent waste management cost savings ( netting out direct monitoring cost) ($/ year) per week Equivalency per month per year 1 4 48 $ 4,680 84% 49 $ 32,105 $ 1,573,161 2 8 96 $ 9,360 67% 39 $ 33,809 $ 1,352,341 3 12 144 $ 14,040 59% 34 $ 34,709 $ 1,180,114 4 16 192 $ 18,720 31% 18 $ 58,669 $ 1,056,038 5 20 240 $ 23,400 24% 14 $ 57,312 $ 974,301 6 24 288 $ 28,080 10% 6 $ 102,684 $ 924,152 7 28 336 $ 32,760 9% 5 $ 110,343 $ 882,745 8 32 384 $ 37,440 7% 4 $ 141,980 $ 851,882 9 36 432 $ 42,120 7% 4 $ 137,300 $ 823,802 10 40 480 $ 46,800 7% 4 $ 159,221 $ 796,106 * Assumes average unit cost per monitoring event ( volatile organics method 1624) = $ 97.50 18 4 8 12 16 20 24 28 32 36 40 Number of Headworks Samples Per Month Per Wastestream $ 700 $ 800 $ 900 $ 1,000 $ 1,100 $ 1,200 $ 1,300 $ 1,400 $ 1,500 $ 1,600 $ 1,700 Thousands Total Annual Cost Savings $ 0 $ 50 $ 100 $ 150 $ 200 Thousands Avg Savings Per Wastestream Total Savings Avg Savings 19 Sensitivity Analysis for Scrubber Wastewater Cost Savings: Trade Off Between Headworks Exemption " Direct Monitoring" Frequency/ Cost and Potential Wastewater Management Savings for Scrubber Wastewaters from the Combustion of F001 to F005 Spent Solvents Headworks Direct Monitoring: Alternative Frequencies ( number of wastewater samples) Average annual direct monitoring cost* per facility ($/ year) 58 wastestreams managed by 25 facilities known to generate and/ or manage F005 benzene or F005 2 ethoxyethanol spent solvent wastestreams Percent of waste streams > breakeven Count of waste streams > breakeven Average annual savings per waste stream ($/ year) National aggregate spent solvent waste management cost savings ( netting out direct monitoring cost) ($/ year) per week Equivalency per month per year 1 4 48 $ 4,680 90% 9 $ 172,535 $ 1,552,811 2 8 96 $ 9,360 90% 9 $ 167,855 $ 1,510,691 3 12 144 $ 14,040 90% 9 $ 163,175 $ 1,468,571 4 16 192 $ 18,720 70% 7 $ 204,745 $ 1,433,215 5 20 240 $ 23,400 70% 7 $ 200,065 $ 1,400,455 6 24 288 $ 28,080 60% 6 $ 228,334 $ 1,370,002 7 28 336 $ 32,760 60% 6 $ 223,654 $ 1,341,922 8 32 384 $ 37,440 60% 6 $ 218,974 $ 1,313,842 9 36 432 $ 42,120 50% 5 $ 257,745 $ 1,288,727 10 40 480 $ 46,800 50% 5 $ 253,065 $ 1,265,327 * Assumes average unit cost per monitoring event ( volatile organics method 1624) = $ 97.50 20 4 8 12 16 20 24 28 32 36 40 Number of Headworks Samples Per Month Per Wastestream $ 1,250 $ 1,300 $ 1,350 $ 1,400 $ 1,450 $ 1,500 $ 1,550 $ 1,600 Thousands Total Annual Cost Savings $ 140 $ 160 $ 180 $ 200 $ 220 $ 240 $ 260 $ 280 Thousands Avg Savings Per Wastestream Total Savings Avg Savings 21 Section IV Supplementary Computation Tables & Spreadsheets 22 Economic Impact Estimation Tables & Spreadsheets for Proposed Regulatory Revision # 1:

Benzene & 2 Ethoxyethanol F005 Spent Solvents 23 List of Facilities Managing F002 & F005 Aqueous Spent Solvent RCRA Hazardous Wastes in Wastewater Treatment Units Data source: USEPA Office of Solid Waste 1997 " Biennial Reporting System" ( BRS) RCRA hazardous waste database Facilities & annual waste quantities in this table identified by applying three BRS database query criteria: Criterion # 1: If wastecodes = F002 or F005: spent solvent hazardous wastes potentially involving benzene, 2 ethoxyethanol, 1,1,2 trichloroethane, or 2 nitropropane Criterion # 2: If waste physical form codes = B101 or B201: aqueous waste w/ low solvent or concentrated solvent water solution Criterion # 3: If waste management systems codes : ( 3a) M071 to M099: aqueous organic and/ or aqueous inorganic treatment systems, or ( 3b) M121 to M123: other aqueous/ liquid waste treatment systems ( neutralization, evaporation, settling/ clarification), or ( 3c) M133 to M136: other aqueous treatment/ disposal systems ( surface impoundment, deepwell injection, direct discharge to sewer/ POTW, direct discharge to surface water under NPDES.

Waste Stream Item EPA_ ID RCRA BRS Waste Form Code SIC Code Source Code Waste Generated ( tons/ year) Onsite/ Offsite Management Waste Management System Code 1997 Managed Tons ( tons/ year) F002 or F005? Characteristic haz waste Dxxx ( other than D001 or D018)? RCRA haz waste code count Does Spent Solvent Carry Any of Four Chemical Specific Wastecodes?

Benzene ( D018 or U019) 112 TCE ( U227) 2 Nitropropane ( U171) 2

Ethoxyethanol ( U359)

1 TND003376928 B101 2819 42,701,759.24 On site M081 42,712,495.75 F002 & F005 5 2 PAD003043353 B101 2833 A34 2,485,320.00 On site M136 2,485,320.00 F002 & F005 Yes 6 3 NYD003930849 B101 2079 A99 717,097.00 On site M136 717,097.00 F005 1 4 NYR000030726 B101 3364 A69 On site M082 583,819.85 F002 2 5 NYD059385120 B101 3679 A63 557,330.00 On site M136 557,330.00 F002 1 6 NYD002211324 B101 3579 A63 526,468.00 On site M136 498,170.00 F005 Yes 8 7 IND000806935 B101 2833 A49 443,615.51 On site M135 443,615.51 F002 & F005 Yes 4 8 MAD001402320 B101 3861 A09 371,025.78 On site M135 371,025.78 F002 & F005 3 9 ALD079109013 B101 3351 A64 On site M083 343,704.15 F002 1 10 GAD039046800 B101 2834 A04 303,995.00 On site M135 303,995.00 F005 Yes 5 11 PAD043882323 B101 3675 A69 On site M135 208,333.20 F002 Yes 2 12 CAD093365435 B101 3764 A64 On site M083 207,041.70 F002 & F005 Yes 5 13 LA4800014587 B101 3769 A31 206,022.97 On site M136 206,022.97 F002 Yes 5 14 CA1800090010 B101 3764 A64 On site M083 154,952.88 F002 & F005 Yes 5 15 IND006050967 B101 2833 A69 On site M136 150,181.74 F002 & F005 Yes 4 X 16 MAD058060476 B101 3861 A75 129,000.00 On site M135 129,000.00 F002 3 17 IND006050967 B101 2833 A37 124,053.00 On site M136 124,053.00 F002 & F005 Yes 3 18 NYD980592497 B101 3861 A49 105,064.13 On site M136 105,064.13 F002 & F005 Yes 8 19 ORD009023466 B101 A73 101,311.90 On site M136 101,311.90 F002 1 24 20 NYD980592497 B101 3861 A49 93,607.39 On site M136 93,607.39 F002 & F005 6 21 CAD093365435 B101 3764 A64 On site M085 88,291.49 F002 & F005 Yes 5 22 NCD003217437 B101 2672 A73 37,531.28 On site M135 75,062.55 F005 1 23 MAD001923408 B101 3669 A69 On site M134 74,854.05 F002 Yes 2 24 NYD002220804 B101 2869 A75 65,290.78 On site M121 65,290.78 F002 2 25 NYD003930849 B101 2079 A49 55,310.83 On site M136 55,310.83 F005 2 26 NCD051330280 B201 2824 A73 25,891.08 On site M135 51,782.17 F005 1 27 MAD000846493 B101 3861 A75 47,726.50 On site M083 47,726.50 F002 & F005 Yes 5 28 MAD001033190 B201 2824 A73 453,765.43 On site M135 45,376.54 F005 2 29 OKD079986568 B101 3861 A63 37,653.88 On site M135 37,653.88 F002 & F005 2 30 COD076470525 B101 2833 A63 On site M085 31,097.04 F002 & F005 4 X 31 MAD062163191 B101 3861 A31 29,372.42 On site M135 29,372.42 F002 & F005 3 32 NYD002211324 B101 3579 A63 526,468.00 On site M135 28,298.00 F005 Yes 8 33 NYD084006741 B101 3571 A63 27,442.81 On site M082 27,442.81 F002 & F005 4 34 NYD980592497 B101 3861 A34 23,802.89 On site M136 23,802.89 F002 & F005 Yes 8 35 NJD002385730 B101 2869 A73 23,656.41 On site M094 23,656.41 F005 3 36 NYD980592497 B101 3861 A49 22,030.66 On site M136 22,030.66 F005 Yes 4 37 VAD023741705 B101 3764 A69 On site M083 19,650.00 F002 2 38 NYD980592497 B101 3861 A49 16,823.68 On site M136 16,823.68 F002 & F005 Yes 9 X 39 NYD980592497 B101 3861 A49 15,494.18 On site M136 15,494.18 F005 Yes 5 40 KSD007482011 B101 3721 A69 On site M135 15,072.23 F002 Yes 4 41 MND000819268 B101 3489 A61 On site M083 15,006.65 F002 2 42 PAD041399403 B101 2819 A69 On site M135 14,553.79 F005 1 43 FL6170024412 B201 9711 A01 7,502.75 On site M135 7,502.75 F002 & F005 Yes 5 44 ALD003297116 B101 3695 A69 On site M081 6,838.54 F005 2 45 NYD986954147 B101 9999 A69 6,713.02 On site M136 6,713.04 F002 1 46 NYD980592497 B101 3861 A49 6,365.34 On site M136 6,365.34 F002 & F005 Yes 6 47 FLD046771952 B201 3721 A01 5,930.05 On site M135 5,930.05 F002 Yes 2 48 OKD000632737 B101 7389 A63 5,800.59 On site M135 5,800.59 F002 & F005 5 49 NYD041292509 B101 3579 A63 5,472.00 On site M135 5,472.00 F005 Yes 4 50 VAD988170445 B101 2869 A78 5,374.78 On site M081 5,374.78 F005 2 25 51 NYD002100352 B101 2542 A69 4,965.87 On site M083 4,965.87 F002 1 52 NYD059385120 B101 3679 A63 4,862.72 On site M135 4,862.72 F002 1 53 NYD980592497 B101 3861 A37 4,497.31 On site M136 4,497.31 F002 & F005 Yes 4 54 NYD980592497 B101 3861 A33 4,493.70 On site M136 4,493.70 F002 & F005 Yes 9 55 NYD980592497 B101 3861 A35 4,491.61 On site M136 4,491.61 F005 1 56 WAR000008979 B101 A06 4,312.61 On site M074 4,312.61 F002 & F005 Yes 4 57 NYD980592497 B101 3861 A32 3,670.63 On site M136 3,670.63 F002 & F005 Yes 8 58 NYD980592497 B101 3861 A37 3,434.63 On site M136 3,434.63 F005 Yes 4 59 NYD980592497 B101 3861 A32 3,403.74 On site M136 3,403.74 F002 & F005 Yes 13 60 COD007068646 B101 3761 A69 On site M136 3,380.90 F002 & F005 4 61 TXD981512122 B101 3053 A73 3,206.97 On site M081 3,175.70 F005 Yes 3 62 UTD009081357 B101 3761 A75 3,048.17 On site M135 3,048.17 F002 & F005 5 63 COD980952097 B101 9199 A65 On site M083 2,998.35 F002 & F005 4 64 FL6170024412 B101 9711 A22 2,849.85 On site M135 2,849.85 F002 & F005 6 65 CAD000030494 B101 3764 A94 2,848.37 On site M092 2,848.37 F002 & F005 Yes 5 66 CA1800090010 B101 3764 A64 On site M085 2,809.84 F002 & F005 Yes 5 67 TXD077603371 B101 0 A49 8,006.53 Off site M134 2,800.79 F005 Yes 4 68 NYD980592497 B101 3861 A35 2,670.81 On site M136 2,670.81 F002 & F005 Yes 9 69 NYD000824482 B101 2812 A51 2,095.74 On site M135 2,095.74 F002 Yes 3 70 NED981723513 B101 4953 A99 4,045.40 Off site M079 2,059.99 F002 & F005 Yes 171 X X 71 FLD004073177 B101 3721 A29 1,968.72 On site M135 1,968.72 F002 & F005 Yes 6 72 GAD061022216 B101 3721 A01 1,891.66 On site M074 1,891.66 F002 Yes 2 73 OHD093945293 B101 4953 A73 Off site M134 1,699.38 F002 & F005 Yes 62 X 74 NYD980592497 B101 3861 A33 1,673.59 On site M136 1,673.59 F005 2 75 WA7890008967 B101 A99 1,650.44 On site M122 1,650.44 F002 Yes 4 76 NYD980592497 B101 3861 A78 1,591.48 On site M136 1,591.48 F005 1 77 CA7170090016 B101 9711 A19 1,575.92 On site M135 1,575.92 F002 Yes 3 X 78 NYD980592497 B101 3861 A33 1,538.73 On site M136 1,538.73 F005 3 79 UTD001705029 B101 3764 A36 1,522.31 On site M135 1,522.31 F002 & F005 4 80 NJD002385730 B101 2869 A94 1,501.20 On site M094 1,501.20 F002 & F005 2 81 NYD980592497 B101 3861 A49 1,419.22 On site M136 1,419.22 F002 & F005 Yes 6 X 26 82 TXD077603371 B101 0 A49 8,006.53 Off site M094 1,293.48 F005 Yes 4 83 NYD003930849 B101 2079 A34 1,266.14 On site M136 1,266.14 F005 Yes 5 84 LAD985218742 B101 3721 A75 1,251.17 On site M135 1,251.17 F005 Yes 8 85 MID000820381 B101 2834 A33 1,201.98 On site M135 1,201.98 F005 2 86 NYD980592497 B101 3861 A32 1,083.54 On site M136 1,083.54 F002 & F005 Yes 8 87 COD000694869 B101 2869 A09 1,000.64 Off site M091 1,000.64 F005 Yes 4 X 88 OKD000758599 B201 3561 A65 913.06 On site M083 913.06 F002 & F005 Yes 7 89 WID000808824 B101 7389 A09 1,031.77 Off site M094 877.81 F005 1 90 WID990829475 B101 7389 A19 Off site M091 877.69 F005 1 91 NYD980592497 B101 3861 A34 847.76 On site M136 847.76 F005 2 92 CAD000030494 B101 3764 A94 1,308.38 On site M122 804.07 F002 & F005 Yes 5 93 WID000808824 B101 7389 A09 1,031.77 Off site M094 745.80 F005 1 94 GAD003324985 B101 2833 A37 726.66 On site M136 726.66 F005 3 95 NYD981561962 B101 9999 A69 705.30 Off site M085 705.30 F002 Yes 2 96 TXD052649027 B101 7389 A89 797.57 Off site M134 669.76 F002 4 97 PAD030069140 B201 2869 A59 615.50 Off site M085 615.50 F002 & F005 4 98 OHD001926740 B101 7389 A73 811.76 Off site M094 589.93 F002 & F005 Yes 16 X 99 KYD053348108 B101 4953 A99 580.22 On site M082 580.22 F002 2 100 CAD008302903 B101 4953 A99 562.64 Off site M079 562.64 F005 1 101 FL6170024412 B101 9711 A22 551.57 On site M135 551.57 F002 & F005 7 102 NJD056356066 B101 2834 A34 3,810.83 Off site M082 549.57 F002 3 103 OHD980681571 B101 7389 A59 4,295.72 Off site M094 527.51 F002 & F005 Yes 9 104 TXD981898760 B101 3079 A75 596.00 Off site M083 499.00 F002 1 105 NYD980592497 B101 3861 A33 495.40 On site M136 495.40 F005 1 106 IND000646943 B101 9999 A99 495.02 Off site M082 495.02 F002 & F005 Yes 29 X 107 AZD009015389 B101 8741 A19 487.49 Off site M081 487.49 F002 Yes 5 108 WVD988776852 B101 3728 A01 476.17 Off site M134 476.17 F002 Yes 4 109 NYD980592497 B101 3861 A49 473.26 On site M136 473.26 F002 & F005 Yes 4 110 UTD001705029 B101 3764 A09 462.08 On site M135 462.08 F002 & F005 4 111 NYD003930849 B101 2079 A35 455.09 On site M136 455.09 F005 1 112 NYD980592497 B101 3861 A31 425.34 On site M136 425.34 F002 1 27 113 GAD003324985 B101 2833 A37 422.36 On site M136 422.36 F005 2 114 AZD009015389 B101 8741 A31 420.60 Off site M134 420.60 F002 & F005 4 115 UTD001705029 B101 3764 A09 370.11 Off site M134 362.30 F002 & F005 4 116 GAD033582461 B101 4953 A75 362.24 On site M094 362.24 F002 & F005 5 117 WAR000008979 B101 A01 357.79 On site M074 357.79 F002 & F005 Yes 4 118 PAD030069140 B201 2869 A59 352.90 Off site M085 352.90 F005 5 119 FL6170024412 B201 9711 A21 348.36 On site M135 348.36 F002 & F005 Yes 6 120 ILD980613913 B101 7389 A73 Off site M134 347.28 F002 & F005 4 121 OHD066060609 B101 7389 A99 Off site M094 340.91 F002 & F005 Yes 24 X 122 ILD005083316 B101 2821 A03 425.75 Off site M094 334.44 F005 3 123 OHD980681571 B101 7389 A19 Off site M094 331.94 F005 Yes 4 124 PRD090036021 B101 2834 A37 294.90 On site M135 294.90 F002 2 125 WID990829475 B101 7389 A73 287.73 Off site M091 287.73 F005 1 126 CTD064828726 B101 2869 A37 284.03 On site M135 284.03 F005 4 127 OHD004182408 B101 3471 A64 278.38 Off site M094 278.38 F005 Yes 5 128 OKD981909849 B101 4581 A21 275.93 Off site M134 275.93 F002 Yes 2 129 MAD000844597 B101 2899 A32 491.77 Off site M081 275.31 F005 3 130 WID990829475 B101 7389 A79 260.01 Off site M091 260.01 F005 1 131 MAR000007955 B101 2865 A31 571.38 Off site M083 259.07 F002 & F005 Yes 5 132 MAD980912323 B101 2869 A37 255.70 Off site M091 255.70 F002 Yes 2 133 RID058065707 B201 3081 A09 295.63 Off site M081 251.17 F005 Yes 3 134 OKD089761290 B101 9999 A01 857.79 Off site M134 250.99 F002 & F005 Yes 211 X 135 NYD980592497 B101 3861 A34 247.51 On site M136 247.51 F002 3 136 IND000646943 B101 9999 A99 242.39 Off site M092 242.39 F002 & F005 Yes 35 X 137 NYD002081396 B101 2834 A34 238.90 On site M083 238.90 F005 3 138 MND985694736 B101 3728 A06 237.01 On site M121 237.01 F002 1 139 WAR000008979 B101 A27 223.10 On site M072 223.10 F002 & F005 Yes 4 140 MAD980912323 B101 2869 A31 219.40 Off site M091 219.40 F005 2 141 IND085616837 B101 2869 A73 214.46 Off site M085 199.59 F002 1 142 ILD980613913 B101 7389 A73 4,078.52 Off site M099 189.80 F002 & F005 4 143 CTD001449784 B101 3721 A01 189.80 Off site M085 185.91 F002 & F005 Yes 4 28 144 MAD001402320 B101 3861 A32 185.74 Off site M085 185.74 F002 1 145 PAD980551964 B201 2834 A34 196.94 Off site M081 183.09 F002 & F005 Yes 5 146 OHD004172565 B101 2869 A94 160.09 Off site M094 182.70 F005 Yes 6 X 147 NYD980592497 B101 3861 A04 182.23 On site M136 182.23 F002 & F005 Yes 6 148 NYD980592497 B101 3861 A19 180.56 On site M136 180.56 F005 2 149 FL6170024412 B201 9711 A75 498.80 Off site M134 178.07 F002 & F005 7 150 NYD980592497 B101 3861 A32 169.72 On site M136 169.72 F005 2 151 PAD067362327 B101 3341 A78 160.76 Off site M094 160.76 F002 Yes 2 152 MAD000844597 B101 2899 A32 150.85 Off site M081 150.85 F005 4 153 IND000646943 B101 9999 A99 141.64 Off site M082 141.64 F002 & F005 Yes 24 X 154 NYD980592497 B101 3861 A37 141.10 On site M136 141.10 F002 & F005 4 155 NYD980592497 B101 3861 A04 135.14 On site M136 135.14 F002 & F005 Yes 5 156 NYD980592497 B101 3861 A09 132.51 On site M136 132.51 F002 & F005 4 157 CTD001840974 B101 3829 A49 162.19 Off site M094 121.15 F002 Yes 3 158 IND000646943 B101 9999 A99 117.79 Off site M082 117.79 F002 & F005 Yes 18 X 159 ILD980613913 B101 7389 A73 Off site M134 116.50 F002 & F005 4 160 PAD067098822 B101 4953 A89 143.75 Off site M092 116.49 F002 & F005 Yes 15 161 IND000646943 B101 9999 A99 115.86 Off site M082 115.86 F002 & F005 Yes 24 X 162 MAD000604447 B101 5093 A89 341.75 Off site M094 115.61 F002 & F005 Yes 25 X 163 TXD077603371 B101 0 A49 8,006.53 Off site M134 114.51 F005 Yes 4 164 NYD980592497 B101 3861 A37 110.46 On site M136 110.46 F005 3 165 KYD000770313 B101 4953 A99 108.71 Off site M081 108.71 F005 2 166 NCD980842132 B201 4953 A99 774.84 Off site M085 106.31 F002 & F005 4 167 NYD980592497 B101 3861 A32 105.39 On site M136 105.39 F005 3 168 NYD980592497 B101 3861 A32 103.02 On site M136 103.02 F005 3 169 COD160887741 B101 4581 A01 100.25 On site M135 100.25 F002 & F005 3 170 IND000646943 B101 9999 A99 100.23 Off site M082 100.23 F002 & F005 Yes 18 X 171 ILD000608471 B201 4953 A89 103.92 Off site M085 99.52 F002 1 172 MAD019371079 B101 4953 A04 139.98 Off site M099 93.79 F002 Yes 7 173 VAD982362428 B101 3577 A78 93.22 Off site M081 93.22 F002 3 174 ILD005083316 B101 2821 A03 425.75 Off site M094 91.30 F005 3 29 175 TXD056542749 B101 4581 A06 55.36 On site M071 87.15 F002 & F005 Yes 4 176 MAD980912323 B101 2869 A32 107.02 Off site M081 85.13 F005 2 177 PAD002311884 B101 2851 A94 82.28 Off site M094 82.28 F005 Yes 3 178 NYD980592497 B101 3861 A09 81.38 On site M136 81.38 F002 & F005 Yes 7 179 WID000808824 B101 7389 A09 1,031.77 Off site M094 79.39 F005 1 180 CTD055310759 B101 2819 A19 78.69 Off site M092 78.69 F002 Yes 3 181 MOD071987416 B101 4581 A01 253.74 Off site M081 75.89 F002 Yes 4 182 TXD058276130 B101 2821 A75 75.70 Off site M134 75.70 F002 & F005 3 183 GAD051010429 B101 2841 A31 230.45 Off site M091 73.71 F002 Yes 5 184 NYD980592497 B101 3861 A09 72.83 On site M136 72.83 F005 4 185 IND000646943 B101 9999 A99 68.55 Off site M082 68.55 F002 & F005 Yes 16 X 186 IND000646943 B101 9999 A99 67.35 Off site M082 67.35 F002 & F005 Yes 26 X 187 NYD980592497 B101 3861 A04 62.55 On site M136 62.55 F002 & F005 Yes 5 188 TXD052649027 B101 7389 A89 797.57 Off site M134 60.41 F002 4 189 CTD980668198 B101 9711 A01 136.46 Off site M134 57.69 F002 Yes 5 190 NJD002147023 B101 2833 A99 55.99 Off site M089 55.99 F005 3 191 CAD981375983 B101 7216 A73 54.42 On site M092 54.42 F002 1 192 FLD982102295 B101 8999 A06 52.13 On site M135 52.13 F002 1 193 CTD000604488 B201 4953 A89 65.01 Off site M085 50.54 F002 & F005 24 X 194 NYD003930849 B101 2079 A59 50.04 On site M136 50.04 F005 1 195 ALD983176520 B101 3721 A03 50.00 On site M077 50.00 F005 2 196 NYD980592497 B101 3861 A33 49.25 On site M136 49.25 F002 & F005 3 197 IND000646943 B101 9999 A99 49.11 Off site M082 49.11 F002 & F005 Yes 19 X 198 OHD066060609 B101 7389 A94 48.00 Off site M094 48.00 F002 & F005 Yes 20 X 199 NYD980592497 B101 3861 A99 46.91 On site M136 46.91 F005 1 200 MAD001402320 B101 3861 A09 47.05 Off site M079 46.82 F002 & F005 Yes 4 201 IND000646943 B101 9999 A99 46.34 Off site M082 46.34 F002 & F005 Yes 17 X 202 LAD000757286 B101 2899 A75 56.00 Off site M134 45.27 F002 & F005 Yes 4 203 ILD000608471 B101 4953 A89 45.24 Off site M085 45.24 F005 Yes 5 204 MID083684290 B101 2869 A34 698.39 Off site M074 45.10 F005 3 205 IND000646943 B101 9999 A99 44.75 Off site M082 44.75 F005 Yes 16 X 30 206 RID058065707 B201 3081 A09 295.63 Off site M081 44.46 F005 Yes 3 207 IND000646943 B101 9999 A99 43.72 Off site M082 43.72 F002 & F005 Yes 12 208 ILD000608471 B201 4953 A89 42.40 Off site M085 42.40 F002 Yes 5 209 NJD002147023 B201 2833 A59 42.00 Off site M089 42.00 F005 2 210 PAD980550412 B101 2833 A09 41.70 Off site M081 41.70 F002 & F005 5 211 OKD079986568 B101 3861 A37 41.69 Off site M082 41.69 F002 & F005 Yes 4 212 CTD001840974 B101 3829 A49 162.19 Off site M094 41.04 F002 Yes 3 213 CTD000604488 B101 4953 A89 42.33 Off site M077 40.03 F002 & F005 Yes 13 X 214 ILD000608471 B201 4953 A89 40.00 Off site M085 40.00 F005 Yes 5 215 NYD000707901 B101 3674 A09 38.50 Off site M085 38.50 F002 & F005 Yes 7 216 KSD007246846 B101 5093 A51 42.89 Off site M091 37.01 F005 Yes 13 X 217 OHD000816629 B201 4953 A89 Off site M099 36.20 F002 & F005 Yes 79 X 218 TXD056542749 B101 4581 A19 22.14 On site M071 34.86 F002 & F005 Yes 4 219 TXD056542749 B101 4581 A29 22.14 On site M071 34.86 F002 & F005 Yes 4 220 CTD001449784 B101 3721 A63 37.50 Off site M085 34.62 F002 Yes 2 221 TXD052649027 B101 7389 A89 797.57 Off site M089 33.04 F002 4 222 IND000646943 B101 9999 A99 33.03 Off site M092 33.03 F002 & F005 Yes 27 X 223 NYD003930849 B101 2079 A04 32.03 On site M136 32.03 F005 Yes 2 224 MAR000007559 B101 3695 A29 196.18 On site M135 30.57 F005 1 225 MAD053452637 B201 4226 A89 241.74 Off site M085 27.11 F002 & F005 Yes 63 X 226 NYD980592497 B101 3861 A34 26.79 On site M136 26.79 F002 & F005 Yes 4 227 NYD002067932 B101 2672 A65 25.70 Off site M099 25.70 F002 & F005 Yes 4 228 OHD980681571 B201 7389 A37 Off site M094 25.57 F002 & F005 4 229 KSD007246846 B101 5093 A19 25.49 Off site M089 25.49 F002 2 X 230 VAD980831176 B101 3541 A69 On site M082 23.96 F002 Yes 3 231 IND000646943 B101 9999 A99 23.08 Off site M082 23.08 F002 & F005 Yes 18 232 ILD000608471 B101 4953 A89 22.41 Off site M085 22.41 F005 Yes 5 233 ILD000608471 B201 4953 A89 22.40 Off site M085 22.40 F002 Yes 5 234 ILD000608471 B201 4953 A89 22.00 Off site M085 22.00 F002 Yes 5 235 MID083684290 B101 2869 A34 698.39 Off site M074 21.89 F005 3 236 KSD980854285 B101 2869 A37 21.75 Off site M082 21.75 F005 3 31 237 IND000646943 B101 9999 A99 21.47 Off site M082 21.47 F002 & F005 Yes 19 X 238 MOD071987416 B101 4581 A01 253.74 Off site M091 20.98 F002 Yes 4 239 NYD980592497 B101 3861 A78 20.85 On site M136 20.85 F002 & F005 Yes 14 240 NJD002385730 B101 2869 A37 20.85 On site M094 20.85 F005 2 241 ILD000608471 B201 4953 A89 20.80 Off site M085 20.80 F005 Yes 4 242 ILD000608471 B201 4953 A89 20.80 Off site M085 20.80 F002 & F005 Yes 5 243 FL6170024412 B201 9711 A75 99.44 Off site M134 20.51 F002 & F005 7 244 MAR000007955 B101 2865 A31 571.38 Off site M083 20.50 F002 & F005 Yes 5 245 MAD000604447 B101 5093 A89 341.75 Off site M078 20.41 F002 & F005 Yes 25 X 246 ILD000608471 B201 4953 A89 20.40 Off site M085 20.40 F005 Yes 5 247 MAD019371079 B101 4953 A73 30.18 Off site M099 20.22 F002 Yes 7 248 ILD000608471 B201 4953 A89 32.02 Off site M085 20.00 F005 Yes 3 249 IND000646943 B101 9999 A99 19.99 Off site M092 19.99 F005 Yes 4 250 CTD980668198 B101 9711 A01 136.46 Off site M092 19.89 F002 Yes 5 251 ILD000608471 B201 4953 A89 19.20 Off site M085 19.20 F005 Yes 5 252 ILD000608471 B201 4953 A89 19.20 Off site M085 19.20 F002 & F005 5 253 VAR000004978 B201 3679 A99 19.14 Off site M082 19.14 F002 3 254 ILD000608471 B201 4953 A89 18.80 Off site M085 18.80 F005 Yes 4 255 ILD000608471 B201 4953 A89 18.80 Off site M085 18.80 F002 & F005 Yes 5 256 OKD987083946 B101 3721 A01 18.77 Off site M134 18.77 F002 1 257 CA7170090016 B101 9711 A19 18.71 On site M135 18.71 F002 Yes 3 X 258 TXD056542749 B101 4581 A76 11.07 On site M071 17.43 F002 Yes 4 259 IND000646943 B101 9999 A99 17.20 Off site M092 17.20 F002 & F005 Yes 18 X 260 DED053304770 B101 2821 A04 17.14 On site M135 17.14 F005 Yes 3 261 FLD980729610 B201 4953 A99 933.15 Off site M081 17.09 F002 & F005 Yes 38 X 262 NJD006980924 B101 8731 A69 16.97 On site M082 16.97 F002 1 263 UTD001705029 B101 3764 A63 On site M135 16.53 F002 2 264 IND000646943 B101 9999 A99 15.80 Off site M092 15.80 F005 Yes 3 265 PAD004498432 B101 2869 A37 15.64 Off site M081 15.64 F002 & F005 Yes 5 266 IND085616837 B101 2869 A73 214.46 Off site M085 14.87 F002 1 267 ILD000608471 B201 4953 A89 14.80 Off site M085 14.80 F002 Yes 5 32 268 GAR000012336 B101 2231 A69 14.80 Off site M082 14.80 F002 & F005 3 269 NCD986177061 B201 8734 A94 23.81 Off site M085 14.43 F002 Yes 4 270 IND000646943 B101 9999 A99 14.29 Off site M082 14.29 F005 Yes 7 X 271 IND000646943 B101 9999 A99 14.11 Off site M082 14.11 F002 & F005 Yes 10 272 ILD000608471 B201 4953 A89 13.60 Off site M085 13.60 F005 Yes 5 273 TXD052649027 B101 7389 A89 797.57 Off site M091 13.37 F002 4 274 IND000646943 B101 9999 A99 13.29 Off site M082 13.29 F005 Yes 11 275 IND000646943 B101 9999 A99 12.96 Off site M082 12.96 F002 & F005 Yes 16 X 276 TXD052649027 B101 7389 A89 797.57 Off site M079 12.61 F002 4 277 IND000646943 B101 9999 A99 12.19 Off site M082 12.19 F002 & F005 Yes 18 X 278 CAD982437089 B101 3728 A21 12.09 Off site M071 12.09 F005 Yes 4 279 CTD000845198 B101 4911 A51 11.90 Off site M092 11.90 F002 & F005 3 280 NYD980592497 B101 3861 A35 11.71 On site M136 11.71 F005 4 281 NYD000809350 B101 3411 A65 11.10 Off site M083 11.10 F005 2 282 LAD000757286 B101 2899 A75 56.00 On site M136 10.73 F002 & F005 Yes 4 283 NJD002385730 B101 2869 A94 10.43 On site M094 10.43 F002 Yes 2 284 TXD062128004 B101 5161 A04 10.33 Off site M134 10.33 F002 1 285 OHD000816629 B201 4953 A89 Off site M099 10.25 F005 Yes 71 X 286 NYD980592497 B101 3861 A31 10.01 On site M136 10.01 F002 1 287 TND982109142 B101 4953 9.22 On site M134 9.22 F002 5 288 CTD000604488 B201 4953 A89 12.04 Off site M085 9.06 F002 & F005 Yes 14 X 289 CTD000844332 B101 3724 A63 9.02 Off site M094 9.02 F002 1 290 TXD077603371 B101 0 A49 8,006.53 Off site M121 8.51 F005 Yes 4 291 CTD001139617 B101 2891 A69 10.32 Off site M099 8.04 F002 Yes 3 292 NYD002211324 B101 3579 A09 8.02 Off site M085 7.82 F002 & F005 Yes 6 293 CAD000627273 B101 3728 A09 7.76 Off site M084 7.76 F002 Yes 5 294 FLD980729610 B201 4953 A99 933.15 Off site M081 7.72 F002 & F005 Yes 38 X 295 NYD980592497 B101 3861 A09 7.61 On site M136 7.61 F005 1 296 PAD001887579 B101 3353 A29 6.99 Off site M085 6.74 F005 Yes 3 297 CAD049904766 B101 3577 A65 7.81 Off site M099 6.66 F002 1 298 NYD980592497 B101 3861 A37 6.31 On site M136 6.31 F005 3 33 299 KSD007246846 B101 5093 A51 42.89 Off site M091 5.88 F005 Yes 13 X 300 NYD980592497 B101 3861 A09 5.66 On site M136 5.66 F005 Yes 3 301 MED985467935 B101 8734 A94 5.65 Off site M099 5.65 F005 Yes 6 X 302 NYD002211324 B101 3579 A53 11.18 Off site M085 5.25 F002 & F005 5 X 303 MSD054179403 B201 2911 A94 5.20 On site M081 5.20 F005 5 304 NYD000098558 B101 7216 A61 5.14 Off site M089 5.14 F002 Yes 2 305 PAD067098822 B101 4953 A89 143.75 Off site M078 5.05 F002 & F005 Yes 15 306 WID068318146 B101 3089 A21 4.80 Off site M085 4.80 F002 1 307 UTD001705029 B101 3764 A63 On site M135 4.73 F002 2 308 OHD066060609 B101 7389 A73 4.64 Off site M094 4.64 F002 & F005 Yes 20 X 309 ILD000608471 B201 4953 A89 4.40 Off site M085 4.40 F005 3 X 310 IND000646943 B101 9999 A99 4.26 Off site M092 4.26 F002 & F005 Yes 21 X 311 NYD980592497 B101 3861 A19 6.19 On site M136 4.24 F002 & F005 Yes 149 X X X X 312 OHD052324290 B101 3679 A64 4.16 Off site M134 4.16 F005 2 313 OHD980681571 B101 7389 A19 Off site M094 4.15 F005 3 314 OHD066060609 B101 7389 A73 4.11 Off site M094 4.11 F002 & F005 Yes 20 X 315 MID000820381 B101 2834 A36 17.54 On site M134 3.82 F002 & F005 3 316 NYD003930849 B101 2079 A94 3.36 On site M136 3.36 F005 Yes 3 317 NYD980592497 B101 3861 A04 3.21 On site M136 3.21 F005 3 318 ILD000608471 B201 4953 A89 3.00 Off site M085 3.00 F002 2 319 ILD000608471 B201 4953 A89 2.88 Off site M085 2.88 F002 & F005 Yes 5 320 NYD080480734 B101 3571 A09 Off site M089 2.86 F005 Yes 3 321 ILD000608471 B201 4953 A89 2.76 Off site M085 2.76 F005 Yes 3 322 IND000646943 B101 9999 A99 2.65 Off site M082 2.65 F002 & F005 Yes 22 X 323 CT5000001107 B101 9511 A94 3.88 Off site M077 2.52 F002 Yes 2 324 FLD981474802 B201 4953 A99 71.49 Off site M081 2.40 F002 & F005 Yes 14 X 325 CTD001139617 B101 2891 A69 10.32 Off site M099 2.28 F002 Yes 3 326 NYD980592497 B101 3861 A04 2.09 On site M136 2.09 F005 3 327 OHD005046677 B101 3724 A94 1.96 Off site M099 1.96 F005 2 328 NY0000926436 B101 2835 A04 1.88 On site M136 1.88 F005 Yes 4 329 ORD099149445 B101 A01 1.88 Off site M082 1.88 F002 & F005 4 34 330 OHD980681571 B101 7389 A94 Off site M082 1.83 F005 4 331 FLD981474802 B101 4953 A99 38.12 Off site M099 1.73 F002 & F005 Yes 25 X 332 OHD980681571 B101 7389 A21 Off site M094 1.60 F005 Yes 4 333 OHD980681571 B201 7389 A19 Off site M094 1.60 F002 Yes 2 334 ILD000608471 B201 4953 A89 1.54 Off site M085 1.54 F005 Yes 2 335 NYD002211324 B101 3579 A59 2.83 Off site M085 1.53 F005 2 336 NYD980592497 B201 3861 A49 1.31 On site M136 1.31 F005 5 337 NYD980592497 B101 3861 A49 1.29 On site M136 1.29 F002 & F005 2 338 OHD980681571 B201 7389 A89 Off site M082 1.19 F005 4 339 CT5000001107 B101 9511 A94 3.88 Off site M077 1.15 F002 Yes 2 340 ILD000608471 B201 4953 A89 1.10 Off site M085 1.10 F005 4 341 MD6150004095 B201 8099 A71 1.27 On site M135 1.05 F002 Yes 6 342 NYD980592497 B101 3861 A60 0.92 On site M136 0.92 F002 & F005 2 343 WAD988478723 B101 A99 0.92 Off site M121 0.92 F002 2 344 NHD500015441 B201 3499 A21 0.90 Off site M075 0.90 F005 3 345 MD6150004095 B201 8099 A71 1.04 On site M135 0.88 F002 Yes 8 X 346 OHD980681571 B101 7389 A38 Off site M094 0.88 F002 2 347 TXD050858182 B101 3679 A69 0.34 Off site M085 0.83 F002 Yes 4 348 NYD053719894 B101 3724 A93 0.83 Off site M074 0.83 F002 Yes 2 349 ILD005158274 B101 3585 A61 4.18 Off site M099 0.77 F002 Yes 2 350 NYD980592497 B101 3861 A31 0.68 On site M136 0.68 F002 & F005 3 351 NYD980592497 B101 3861 A94 0.66 On site M136 0.66 F002 & F005 3 352 ILD000608471 B201 4953 A89 0.66 Off site M085 0.66 F002 3 353 NYD080480734 B101 3571 A69 Off site M089 0.60 F002 2 354 OHD980681571 B201 7389 A69 Off site M094 0.50 F002 Yes 2 355 NYD002211324 B101 3579 A09 8.02 Off site M078 0.49 F002 & F005 Yes 6 356 WAD009249863 B101 A19 0.94 Off site M082 0.48 F005 2 357 CTD001186212 B101 3675 A09 0.46 Off site M085 0.46 F002 Yes 2 358 ALD000622464 B201 4953 A89 8.79 Off site M079 0.46 F002 & F005 Yes 40 X X 359 OHD980681571 B201 7389 A31 Off site M094 0.45 F005 1 360 ILD000608471 B201 4953 A89 0.44 Off site M085 0.44 F005 Yes 2 35 361 NYD980592497 B101 3861 A31 0.42 On site M136 0.42 F005 2 362 AKD009252230 B101 2611 A53 0.41 Off site M082 0.41 F002 & F005 3 363 ORD009227398 B201 A06 0.31 Off site M082 0.31 F002 Yes 4 364 GAD980845077 B101 5169 A57 0.30 Off site M099 0.30 F002 & F005 4 365 PAD003038056 B201 3861 A09 1.15 Off site M091 0.30 F005 3 366 NYD980592497 B101 3861 A69 0.29 On site M136 0.29 F002 & F005 13 X 367 CTD001149277 B101 3724 A63 0.23 Off site M094 0.23 F002 1 368 GAD981224991 B101 5999 A69 0.23 Off site M075 0.23 F002 Yes 3 369 PAD987271848 B201 2812 A94 39.74 Off site M094 0.23 F002 & F005 4 370 ILD000608471 B201 4953 A89 0.22 Off site M085 0.22 F005 Yes 5 X 371 CT5000001107 B101 9511 A94 3.88 Off site M077 0.21 F002 Yes 2 372 TXD050858182 B101 3679 A69 0.34 Off site M077 0.20 F002 Yes 4 373 MID980683775 B101 2522 A19 0.85 Off site M091 0.20 F005 Yes 10 X 374 WA0000189431 B201 A58 0.19 Off site M082 0.19 F005 3 375 NYD002211324 B101 3579 A53 0.18 Off site M085 0.18 F002 & F005 4 376 NYD980592497 B101 3861 A99 0.17 On site M136 0.17 F005 1 377 CTD001169010 B101 2899 A37 12.48 Off site M077 0.10 F002 Yes 3 378 NYD980592497 B201 3861 A35 0.10 On site M136 0.10 F005 3 379 NYD980592497 B201 3861 A29 0.08 On site M136 0.08 F005 3 380 NYD980592497 B101 3861 A34 0.06 On site M136 0.06 F005 1 381 ILD000608471 B201 4953 A89 0.04 Off site M085 0.04 F005 Yes 3 382 NYD980592497 B101 3861 A99 0.02 On site M136 0.02 F005 Yes 5 383 NYD980592497 B201 3861 A49 0.01 On site M136 0.01 F005 2 Data Summary: Column totals = 51,496,157 5,316,286 192,509 16,828 2,064 4 Count of wastestreams = 383 207 58 ( 15.1%) 3 ( 0.8%) 2 ( 0.5%) 1 ( 0.3%)

Count of managing facilities = 175 175 25 2 2 1 36 Summary of Facilities and Wastestreams Potentially Eligible for the Proposed Expansion of the RCRA " Headworks Exemption" to Apply to Four Additional Spent Solvent Chemicals ( Data source: USEPA Office of Solid Waste, 1997 Biennial Reporting System ( BRS) for RCRA hazardous waste generation and management)

Spent Solvent Chemical Aqueous* F002 & F005 Spent Solvent Management Count of F002 & F005 aqueous spent solvent waste streams managed in wastewater treatment systems** Count of F002 & F005 aqueous spent solvent managing facilities ( LQGs) Annual quanity of F002 & F005 aqueous spent solvent wastes managed Benzene 58 15.1% 25 192,509 2 Ethoxyethanol 1 0.3% 1 4 1,1,2 Trichloroethane 3 0.8% 2 16,828 2 Nitropropane 2 0.5% 2 1 Non duplicative subtotal ( 4 solvents) = 59 15.4% 27 209,342 Unconfirmed chemical type of F002 or F005 spent solvent managed 324 84.6% 148 51.287 million Total all LQG aqueous F002 & F005 spent solvents managed in wastewater treatment systems = 383 100% 175 51.496 million Explanatory Notes: ( a) Facility count and annual quantity of four chemical specific spent solvent wastestreams potentially eligible for revised headworks exemption does not reflect whether each facility and wastestream will meet a minimum break even microeconomic tradeoff benefit in the form of waste management annual cost savings, after netting out annual " direct monitoring" or " mass balance" reporting costs. ( b) * Aqueous defined according to USEPA Office of Solid Waste " Biennial Reporting System" ( BRS) hazardous waste physical form codes: B101 = aqueous waste with low solvents B102 = concentrated solvent water solution ( c) ** Wastewater treatment systems defined according to the following BRS database hazardous waste management system type codes: M071 to M099 = aqueous inorganic and/ or aqueous organic waste treatment systems M121 to M123 = other aqueous/ liquid treatment systems ( neutralization, evaporation, settling/ clarification) M133 to M136 = other aqueous waste treatment or disposal ( i. e. surface impoundment, deepwell underground injection, direct discharge to sewer/ POTW, direct discharge to surface water under NPDES). 37 Aqueous F002 & F005 Spent Solvent Hazardous Waste Quantities As Basis For Estimating Potential Cost Savings for Revising the " Headworks Exemption" to Include F005 Benzene & F005 2 Ethoxyethanol ( source: 1997 BRS   see prior list of facilities data table in this report for BRS database query criteria)

WW flow days/ year ( EPA 821 R 98 016, Dec. 1998, p. 1 2) = 260 Tons per truck trip > 20 Gallons WW to generate 1.0 ton WW sludge = 2,931*

Waste stream item EPA_ ID Alternative Equivalent Metrics for Annual Waste Quantity Count of offsite shipments per year ( full tanker truckload equivalents) RCRA BRS Waste Management System Code Waste treatment location Waste Treatment Method ( RCRA BRS Description) Imputed WW treatment sludge quantity** ( tons/ year) 1997 aqueous spent solvent managed ( tons/ year) Gallon equivalent ( assuming average 8.34 lbs/ gallon) Million gallons per day ( mgd) equivalent Gallons per minute ( gpm) equivalent Count of 55 gallon drum equivalents 1 TND003376928 42,712,496 10,242,804,736 39.395 27,358 186,232,813 M081 On site Biological treatment 3,495,072 2 PAD003043353 2,485,320 596,000,000 2.292 1,592 10,836,364 M136 On site Direct discharge to surface water under NPDES 0 3 NYD003930849 717,097 171,965,707 0.661 459 3,126,649 M136 On site Direct discharge to surface water under NPDES 0 4 NYR000030726 583,820 140,004,760 0.538 374 2,545,541 M082 On site Carbon adsorption 47,773 5 NYD059385120 557,330 133,652,278 0.514 357 2,430,041 M136 On site Direct discharge to surface water under NPDES 0 6 NYD002211324 498,170 119,465,228 0.459 319 2,172,095 M136 On site Direct discharge to surface water under NPDES 0 7 IND000806935 443,616 106,382,617 0.409 284 1,934,229 M135 On site Direct discharge to sewer/ POTW 0 8 MAD001402320 371,026 88,975,007 0.342 238 1,617,727 M135 On site Direct discharge to sewer/ POTW 0 9 ALD079109013 343,704 82,423,058 0.317 220 1,498,601 M083 On site Air/ steam stripping 28,125 10 GAD039046800 303,995 72,900,480 0.280 195 1,325,463 M135 On site Direct discharge to sewer/ POTW 0 11 PAD043882323 208,333 49,960,000 0.192 133 908,364 M135 On site Direct discharge to sewer/ POTW 0 12 CAD093365435 207,042 49,650,288 0.191 133 902,733 M083 On site Air/ steam stripping 16,942 13 LA4800014587 206,023 49,405,988 0.190 132 898,291 M136 On site Direct discharge to surface water under NPDES 0 14 CA1800090010 154,953 37,158,963 0.143 99 675,618 M083 On site Air/ steam stripping 12,679 38 15 IND006050967 150,182 36,014,805 0.139 96 654,815 M136 On site Direct discharge to surface water under NPDES 0 16 MAD058060476 129,000 30,935,252 0.119 83 562,459 M135 On site Direct discharge to sewer/ POTW 0 17 IND006050967 124,053 29,748,921 0.114 79 540,889 M136 On site Direct discharge to surface water under NPDES 0 18 NYD980592497 105,064 25,195,234 0.097 67 458,095 M136 On site Direct discharge to surface water under NPDES 0 19 ORD009023466 101,312 24,295,420 0.093 65 441,735 M136 On site Direct discharge to surface water under NPDES 0 20 NYD980592497 93,607 22,447,816 0.086 60 408,142 M136 On site Direct discharge to surface water under NPDES 0 21 CAD093365435 88,291 21,173,020 0.081 57 384,964 M085 On site Other aqueous organic treatment 7,225 22 NCD003217437 75,063 18,000,612 0.069 48 327,284 M135 On site Direct discharge to sewer/ POTW 0 23 MAD001923408 74,854 17,950,610 0.069 48 326,375 M134 On site Deepwell injection 0 24 NYD002220804 65,291 15,657,260 0.060 42 284,677 M121 On site Neutralization only 5,343 25 NYD003930849 55,311 13,263,988 0.051 35 241,163 M136 On site Direct discharge to surface water under NPDES 0 26 NCD051330280 51,782 12,417,786 0.048 33 225,778 M135 On site Direct discharge to sewer/ POTW 0 27 MAD000846493 47,726 11,445,203 0.044 31 208,095 M083 On site Air/ steam stripping 3,905 28 MAD001033190 45,377 10,881,665 0.042 29 197,848 M135 On site Direct discharge to sewer/ POTW 0 29 OKD079986568 37,654 9,029,707 0.035 24 164,176 M135 On site Direct discharge to sewer/ POTW 0 30 COD076470525 31,097 7,457,325 0.029 20 135,588 M085 On site Other aqueous organic treatment 2,545 31 MAD062163191 29,372 7,043,745 0.027 19 128,068 M135 On site Direct discharge to sewer/ POTW 0 32 NYD002211324 28,298 6,786,091 0.026 18 123,383 M135 On site Direct discharge to sewer/ POTW 0 33 NYD084006741 27,443 6,581,010 0.025 18 119,655 M082 On site Carbon adsorption 2,246 34 NYD980592497 23,803 5,708,128 0.022 15 103,784 M136 On site Direct discharge to surface water under NPDES 0 35 NJD002385730 23,656 5,673,000 0.022 15 103,145 M094 On site Other aqueous 1,936 39 organic/ inorganic treatment 36 NYD980592497 22,031 5,283,132 0.020 14.1 96,057 M136 On site Direct discharge to surface water under NPDES 0 37 VAD023741705 19,650 4,712,230 0.018 12.6 85,677 M083 On site Air/ steam stripping 1,608 38 NYD980592497 16,824 4,034,456 0.016 10.8 73,354 M136 On site Direct discharge to surface water under NPDES 0 39 NYD980592497 15,494 3,715,630 0.014 9.9 67,557 M136 On site Direct discharge to surface water under NPDES 0 40 KSD007482011 15,072 3,614,443 0.014 9.7 65,717 M135 On site Direct discharge to sewer/ POTW 0 41 MND000819268 15,007 3,598,717 0.014 9.6 65,431 M083 On site Air/ steam stripping 1,228 42 PAD041399403 14,554 3,490,119 0.013 9.3 63,457 M135 On site Direct discharge to sewer/ POTW 0 43 FL6170024412 7,503 1,799,221 0.007 4.8 32,713 M135 On site Direct discharge to sewer/ POTW 0 44 ALD003297116 6,839 1,639,938 0.006 4.4 29,817 M081 On site Biological treatment 560 45 NYD986954147 6,713 1,609,843 0.006 4.3 29,270 M136 On site Direct discharge to surface water under NPDES 0 46 NYD980592497 6,365 1,526,459 0.006 4.1 27,754 M136 On site Direct discharge to surface water under NPDES 0 47 FLD046771952 5,930 1,422,074 0.005 3.8 25,856 M135 On site Direct discharge to sewer/ POTW 0 48 OKD000632737 5,801 1,391,029 0.005 3.7 25,291 M135 On site Direct discharge to sewer/ POTW 0 49 NYD041292509 5,472 1,312,230 0.005 3.5 23,859 M135 On site Direct discharge to sewer/ POTW 0 50 VAD988170445 5,375 1,288,915 0.005 3.4 23,435 M081 On site Biological treatment 440 51 NYD002100352 4,966 1,190,857 0.005 3.2 21,652 M083 On site Air/ steam stripping 406 52 NYD059385120 4,863 1,166,120 0.004 3.1 21,202 M135 On site Direct discharge to sewer/ POTW 0 53 NYD980592497 4,497 1,078,492 0.004 2.9 19,609 M136 On site Direct discharge to surface water under NPDES 0 54 NYD980592497 4,494 1,077,626 0.004 2.9 19,593 M136 On site Direct discharge to surface water under NPDES 0 55 NYD980592497 4,492 1,077,125 0.004 2.9 19,584 M136 On site Direct discharge to surface water under NPDES 0 56 WAR000008979 4,313 1,034,200 0.004 2.8 18,804 M074 On site Chemical precipitation 353 40 57 NYD980592497 3,671 880,246 0.003 2.4 16,004 M136 On site Direct discharge to surface water under NPDES 0 58 NYD980592497 3,435 823,651 0.003 2.2 14,975 M136 On site Direct discharge to surface water under NPDES 0 59 NYD980592497 3,404 816,245 0.003 2.2 14,841 M136 On site Direct discharge to surface water under NPDES 0 60 COD007068646 3,381 810,768 0.003 2.2 14,741 M136 On site Direct discharge to surface water under NPDES 0 61 TXD981512122 3,176 761,559 0.003 2.0 13,847 M081 On site Biological treatment 260 62 UTD009081357 3,048 730,977 0.003 2.0 13,290 M135 On site Direct discharge to sewer/ POTW 0 63 COD980952097 2,998 719,028 0.003 1.9 13,073 M083 On site Air/ steam stripping 245 64 FL6170024412 2,850 683,417 0.003 1.8 12,426 M135 On site Direct discharge to sewer/ POTW 0 65 CAD000030494 2,848 683,063 0.003 1.8 12,419 M092 On site Chemical precipitation in combination with carbon adsorption 233 66 CA1800090010 2,810 673,823 0.003 1.8 12,251 M085 On site Other aqueous organic treatment 230 67 TXD077603371 2,801 671,652 0.003 1.8 12,212 140.0 M134 Off site Deepwell injection 0 68 NYD980592497 2,671 640,483 0.002 1.7 11,645 M136 On site Direct discharge to surface water under NPDES 0 69 NYD000824482 2,096 502,577 0.0019 1.34 9,138 M135 On site Direct discharge to sewer/ POTW 0 70 NED981723513 2,060 494,003 0.0019 1.32 8,982 103.0 M079 Off site Other aqueous treatment 169 71 FLD004073177 1,969 472,116 0.0018 1.26 8,584 M135 On site Direct discharge to sewer/ POTW 0 72 GAD061022216 1,892 453,635 0.0017 1.21 8,248 M074 On site Chemical precipitation 155 73 OHD093945293 1,699 407,525 0.0016 1.09 7,410 85.0 M134 Off site Deepwell injection 0 74 NYD980592497 1,674 401,340 0.0015 1.07 7,297 M136 On site Direct discharge to surface water under NPDES 0 75 WA7890008967 1,650 395,789 0.0015 1.06 7,196 M122 On site Evaporation only 135 76 NYD980592497 1,591 381,650 0.0015 1.02 6,939 M136 On site Direct discharge to surface water under NPDES 0 77 CA7170090016 1,576 377,919 0.0015 1.01 6,871 M135 On site Direct discharge to sewer/ POTW 0 78 NYD980592497 1,539 369,000 0.0014 0.99 6,709 M136 On site Direct discharge to surface 0 41 water under NPDES 79 UTD001705029 1,522 365,062 0.0014 0.98 6,637 M135 On site Direct discharge to sewer/ POTW 0 80 NJD002385730 1,501 360,000 0.0014 0.96 6,545 M094 On site Other aqueous organic/ inorganic treatment 123 81 NYD980592497 1,419 340,339 0.0013 0.91 6,188 M136 On site Direct discharge to surface water under NPDES 0 82 TXD077603371 1,293 310,187 0.0012 0.83 5,640 64.7 M094 Off site Other aqueous organic/ inorganic treatment 106 83 NYD003930849 1,266 303,630 0.0012 0.81 5,521 M136 On site Direct discharge to surface water under NPDES 0 84 LAD985218742 1,251 300,040 0.0012 0.80 5,455 M135 On site Direct discharge to sewer/ POTW 0 85 MID000820381 1,202 288,246 0.0011 0.77 5,241 M135 On site Direct discharge to sewer/ POTW 0 86 NYD980592497 1,084 259,841 0.0010 0.69 4,724 M136 On site Direct discharge to surface water under NPDES 0 87 COD000694869 1,001 239,961 0.0009 0.64 4,363 50.0 M091 Off site Chemical precipitation in combination with biological treatment 82 88 OKD000758599 913 218,959 0.0008 0.58 3,981 M083 On site Air/ steam stripping 75 89 WID000808824 878 210,505 0.0008 0.56 3,827 43.9 M094 Off site Other aqueous organic/ inorganic treatment 72 90 WID990829475 878 210,476 0.0008 0.56 3,827 43.9 M091 Off site Chemical precipitation in combination with biological treatment 72 91 NYD980592497 848 203,300 0.0008 0.54 3,696 M136 On site Direct discharge to surface water under NPDES 0 92 CAD000030494 804 192,822 0.0007 0.52 3,506 M122 On site Evaporation only 66 93 WID000808824 746 178,849 0.0007 0.48 3,252 37.3 M094 Off site Other aqueous organic/ inorganic treatment 61 94 GAD003324985 727 174,259 0.0007 0.47 3,168 M136 On site Direct discharge to surface water under NPDES 0 95 NYD981561962 705 169,137 0.0007 0.45 3,075 35.3 M085 Off site Other aqueous organic treatment 58 96 TXD052649027 670 160,614 0.0006 0.43 2,920 33.5 M134 Off site Deepwell injection 0 97 PAD030069140 616 147,602 0.0006 0.39 2,684 30.8 M085 Off site Other aqueous organic treatment 50 42 98 OHD001926740 590 141,471 0.0005 0.38 2,572 29.5 M094 Off site Other aqueous organic/ inorganic treatment 48 99 KYD053348108 580 139,141 0.0005 0.37 2,530 M082 On site Carbon adsorption 47 100 CAD008302903 563 134,926 0.0005 0.36 2,453 28.1 M079 Off site Other aqueous treatment 46 101 FL6170024412 552 132,271 0.0005 0.35 2,405 M135 On site Direct discharge to sewer/ POTW 0 102 NJD056356066 550 131,792 0.0005 0.35 2,396 27.5 M082 Off site Carbon adsorption 45 103 OHD980681571 528 126,501 0.0005 0.34 2,300 26.4 M094 Off site Other aqueous organic/ inorganic treatment 43 104 TXD981898760 499 119,664 0.0005 0.32 2,176 25.0 M083 Off site Air/ steam stripping 41 105 NYD980592497 495 118,800 0.0005 0.32 2,160 M136 On site Direct discharge to surface water under NPDES 0 106 IND000646943 495 118,710 0.0005 0.32 2,158 24.8 M082 Off site Carbon adsorption 41 107 AZD009015389 487 116,903 0.0004 0.31 2,126 24.4 M081 Off site Biological treatment 40 108 WVD988776852 476 114,189 0.0004 0.30 2,076 23.8 M134 Off site Deepwell injection 0 109 NYD980592497 473 113,491 0.0004 0.30 2,063 M136 On site Direct discharge to surface water under NPDES 0 110 UTD001705029 462 110,809 0.0004 0.30 2,015 M135 On site Direct discharge to sewer/ POTW 0 111 NYD003930849 455 109,135 0.0004 0.29 1,984 M136 On site Direct discharge to surface water under NPDES 0 112 NYD980592497 425 102,000 0.0004 0.27 1,855 M136 On site Direct discharge to surface water under NPDES 0 113 GAD003324985 422 101,285 0.0004 0.27 1,842 M136 On site Direct discharge to surface water under NPDES 0 114 AZD009015389 421 100,863 0.0004 0.27 1,834 21.0 M134 Off site Deepwell injection 0 115 UTD001705029 362 86,882 0.0003 0.23 1,580 18.1 M134 Off site Deepwell injection 0 116 GAD033582461 362 86,867 0.0003 0.23 1,579 M094 On site Other aqueous organic/ inorganic treatment 30 117 WAR000008979 358 85,800 0.0003 0.23 1,560 M074 On site Chemical precipitation 29 118 PAD030069140 353 84,628 0.0003 0.23 1,539 17.6 M085 Off site Other aqueous organic treatment 29 119 FL6170024412 348 83,539 0.0003 0.22 1,519 M135 On site Direct discharge to sewer/ POTW 0 120 ILD980613913 347 83,280 0.0003 0.22 1,514 17.4 M134 Off site Deepwell injection 0 121 OHD066060609 341 81,753 0.0003 0.22 1,486 17.0 M094 Off site Other aqueous 28 43 organic/ inorganic treatment 122 ILD005083316 334 80,202 0.0003 0.21 1,458 16.7 M094 Off site Other aqueous organic/ inorganic treatment 27 123 OHD980681571 332 79,601 0.0003 0.21 1,447 16.6 M094 Off site Other aqueous organic/ inorganic treatment 27 124 PRD090036021 295 70,719 0.0003 0.19 1,286 M135 On site Direct discharge to sewer/ POTW 0 125 WID990829475 288 69,000 0.0003 0.18 1,255 14.4 M091 Off site Chemical precipitation in combination with biological treatment 24 126 CTD064828726 284 68,112 0.0003 0.18 1,238 M135 On site Direct discharge to sewer/ POTW 0 127 OHD004182408 278 66,759 0.0003 0.18 1,214 13.9 M094 Off site Other aqueous organic/ inorganic treatment 23 128 OKD981909849 276 66,170 0.0003 0.18 1,203 13.8 M134 Off site Deepwell injection 0 129 MAD000844597 275 66,022 0.0003 0.18 1,200 13.8 M081 Off site Biological treatment 23 130 WID990829475 260 62,352 0.0002 0.17 1,134 13.0 M091 Off site Chemical precipitation in combination with biological treatment 21 131 MAR000007955 259 62,126 0.0002 0.17 1,130 13.0 M083 Off site Air/ steam stripping 21 132 MAD980912323 256 61,318 0.0002 0.16 1,115 12.8 M091 Off site Chemical precipitation in combination with biological treatment 21 133 RID058065707 251 60,234 0.0002 0.16 1,095 12.6 M081 Off site Biological treatment 21 134 OKD089761290 251 60,190 0.0002 0.16 1,094 12.5 M134 Off site Deepwell injection 0 135 NYD980592497 248 59,354 0.0002 0.16 1,079 M136 On site Direct discharge to surface water under NPDES 0 136 IND000646943 242 58,127 0.0002 0.16 1,057 12.1 M092 Off site Chemical precipitation in combination with carbon adsorption 20 137 NYD002081396 239 57,290 0.0002 0.15 1,042 M083 On site Air/ steam stripping 20 138 MND985694736 237 56,836 0.0002 0.15 1,033 M121 On site Neutralization only 19 139 WAR000008979 223 53,500 0.0002 0.14 973 M072 On site Chemical precipitation 18 140 MAD980912323 219 52,613 0.0002 0.14 957 11.0 M091 Off site Chemical precipitation in combination with biological treatment 18 141 IND085616837 200 47,862 0.00018 0.13 870 10.0 M085 Off site Other aqueous organic 16 44 treatment 142 ILD980613913 190 45,516 0.00018 0.12 828 9.5 M099 Off site Other aqueous organic/ inorganic treatment 15.5 143 CTD001449784 186 44,582 0.00017 0.12 811 9.3 M085 Off site Other aqueous organic treatment 15.2 144 MAD001402320 186 44,541 0.00017 0.12 810 9.3 M085 Off site Other aqueous organic treatment 15.2 145 PAD980551964 183 43,907 0.00017 0.12 798 9.2 M081 Off site Biological treatment 15.0 146 OHD004172565 183 43,813 0.00017 0.12 797 9.1 M094 Off site Other aqueous organic/ inorganic treatment 14.9 147 NYD980592497 182 43,700 0.00017 0.12 795 M136 On site Direct discharge to surface water under NPDES 0.0 148 NYD980592497 181 43,300 0.00017 0.12 787 M136 On site Direct discharge to surface water under NPDES 0.0 149 FL6170024412 178 42,703 0.00016 0.11 776 8.9 M134 Off site Deepwell injection 0.0 150 NYD980592497 170 40,700 0.00016 0.11 740 M136 On site Direct discharge to surface water under NPDES 0.0 151 PAD067362327 161 38,552 0.00015 0.10 701 8.0 M094 Off site Other aqueous organic/ inorganic treatment 13.2 152 MAD000844597 151 36,174 0.00014 0.10 658 7.5 M081 Off site Biological treatment 12.3 153 IND000646943 142 33,967 0.00013 0.09 618 7.1 M082 Off site Carbon adsorption 11.6 154 NYD980592497 141 33,837 0.00013 0.09 615 M136 On site Direct discharge to surface water under NPDES 0.0 155 NYD980592497 135 32,407 0.00012 0.09 589 M136 On site Direct discharge to surface water under NPDES 0.0 156 NYD980592497 133 31,777 0.00012 0.08 578 M136 On site Direct discharge to surface water under NPDES 0.00 157 CTD001840974 121 29,052 0.00011 0.08 528 6.1 M094 Off site Other aqueous organic/ inorganic treatment 9.91 158 IND000646943 118 28,246 0.00011 0.08 514 5.9 M082 Off site Carbon adsorption 9.64 159 ILD980613913 116 27,937 0.00011 0.07 508 5.8 M134 Off site Deepwell injection 0.00 160 PAD067098822 116 27,935 0.00011 0.07 508 5.8 M092 Off site Chemical precipitation in combination with carbon adsorption 9.53 161 IND000646943 116 27,783 0.00011 0.07 505 5.8 M082 Off site Carbon adsorption 9.48 162 MAD000604447 116 27,725 0.00011 0.07 504 5.8 M094 Off site Other aqueous organic/ inorganic treatment 9.46 45 163 TXD077603371 115 27,460 0.00011 0.073 499 5.7 M134 Off site Deepwell injection 0.00 164 NYD980592497 110 26,489 0.00010 0.071 482 M136 On site Direct discharge to surface water under NPDES 0.00 165 KYD000770313 109 26,070 0.00010 0.070 474 5.4 M081 Off site Biological treatment 8.90 166 NCD980842132 106 25,493 0.00010 0.068 464 5.3 M085 Off site Other aqueous organic treatment 8.70 167 NYD980592497 105 25,274 0.00010 0.068 460 M136 On site Direct discharge to surface water under NPDES 0.00 168 NYD980592497 103 24,706 0.00010 0.066 449 M136 On site Direct discharge to surface water under NPDES 0.00 169 COD160887741 100 24,040 0.00009 0.064 437 M135 On site Direct discharge to sewer/ POTW 0.00 170 IND000646943 100 24,037 0.00009 0.064 437 5.0 M082 Off site Carbon adsorption 8.20 171 ILD000608471 100 23,865 0.00009 0.064 434 5.0 M085 Off site Other aqueous organic treatment 8.14 172 MAD019371079 94 22,490 0.00009 0.060 409 4.7 M099 Off site Other aqueous organic/ inorganic treatment 7.67 173 VAD982362428 93 22,354 0.00009 0.060 406 4.7 M081 Off site Biological treatment 7.63 174 ILD005083316 91 21,895 0.00008 0.058 398 4.6 M094 Off site Other aqueous organic/ inorganic treatment 7.47 175 TXD056542749 87 20,899 0.00008 0.056 380 M071 On site Chemical precipitation 7.13 176 MAD980912323 85 20,414 0.00008 0.055 371 4.3 M081 Off site Biological treatment 6.97 177 PAD002311884 82 19,730 0.00008 0.053 359 4.1 M094 Off site Other aqueous organic/ inorganic treatment 6.73 178 NYD980592497 81 19,515 0.00008 0.052 355 M136 On site Direct discharge to surface water under NPDES 0.00 179 WID000808824 79 19,038 0.00007 0.051 346 4.0 M094 Off site Other aqueous organic/ inorganic treatment 6.50 180 CTD055310759 79 18,870 0.00007 0.050 343 3.9 M092 Off site Chemical precipitation in combination with carbon adsorption 6.44 181 MOD071987416 76 18,200 0.00007 0.049 331 3.8 M081 Off site Biological treatment 6.21 182 TXD058276130 76 18,153 0.00007 0.048 330 3.8 M134 Off site Deepwell injection 0.00 183 GAD051010429 74 17,677 0.00007 0.047 321 3.7 M091 Off site Chemical precipitation in combination with biological treatment 6.03 184 NYD980592497 73 17,465 0.00007 0.047 318 M136 On site Direct discharge to surface 0.00 46 water under NPDES 185 IND000646943 69 16,439 0.00006 0.044 299 3.4 M082 Off site Carbon adsorption 5.61 186 IND000646943 67 16,151 0.00006 0.043 294 3.4 M082 Off site Carbon adsorption 5.51 187 NYD980592497 63 15,000 0.00006 0.040 273 M136 On site Direct discharge to surface water under NPDES 0.00 188 TXD052649027 60 14,487 0.00006 0.039 263 3.0 M134 Off site Deepwell injection 0.00 189 CTD980668198 58 13,834 0.00005 0.037 252 2.9 M134 Off site Deepwell injection 0.00 190 NJD002147023 56 13,428 0.00005 0.036 244 2.8 M089 Off site Other aqueous organic treatment 4.58 191 CAD981375983 54 13,050 0.00005 0.035 237 M092 On site Chemical precipitation in combination with carbon adsorption 4.45 192 FLD982102295 52 12,500 0.00005 0.033 227 M135 On site Direct discharge to sewer/ POTW 0.00 193 CTD000604488 51 12,119 0.00005 0.032 220 2.5 M085 Off site Other aqueous organic treatment 4.14 194 NYD003930849 50.0 12,000 0.00005 0.032 218 M136 On site Direct discharge to surface water under NPDES 0.00 195 ALD983176520 50.0 11,990 0.00005 0.032 218 M077 On site Chemical precipitation 4.09 196 NYD980592497 49.2 11,810 0.00005 0.032 215 M136 On site Direct discharge to surface water under NPDES 0.00 197 IND000646943 49.1 11,777 0.00005 0.031 214 2.5 M082 Off site Carbon adsorption 4.02 198 OHD066060609 48.0 11,511 0.00004 0.031 209 2.4 M094 Off site Other aqueous organic/ inorganic treatment 3.93 199 NYD980592497 46.9 11,250 0.00004 0.030 205 M136 On site Direct discharge to surface water under NPDES 0.00 200 MAD001402320 46.8 11,228 0.00004 0.030 204 2.3 M079 Off site Other aqueous treatment 3.83 201 IND000646943 46.3 11,113 0.00004 0.030 202 2.3 M082 Off site Carbon adsorption 3.79 202 LAD000757286 45.3 10,856 0.00004 0.029 197 2.3 M134 Off site Deepwell injection 0.00 203 ILD000608471 45.2 10,848 0.00004 0.029 197 2.3 M085 Off site Other aqueous organic treatment 3.70 204 MID083684290 45.1 10,815 0.00004 0.029 197 2.3 M074 Off site Chemical precipitation 3.69 205 IND000646943 44.8 10,731 0.00004 0.029 195 2.2 M082 Off site Carbon adsorption 3.66 206 RID058065707 44.5 10,662 0.00004 0.028 194 2.2 M081 Off site Biological treatment 3.64 207 IND000646943 43.7 10,484 0.00004 0.028 191 2.2 M082 Off site Carbon adsorption 3.58 47 208 ILD000608471 42.4 10,168 0.00004 0.027 185 2.1 M085 Off site Other aqueous organic treatment 3.47 209 NJD002147023 42.0 10,071 0.00004 0.027 183 2.1 M089 Off site Other aqueous organic treatment 3.44 210 PAD980550412 41.7 10,000 0.00004 0.027 182 2.1 M081 Off site Biological treatment 3.41 211 OKD079986568 41.7 9,998 0.00004 0.027 182 2.1 M082 Off site Carbon adsorption 3.41 212 CTD001840974 41.0 9,842 0.00004 0.026 179 2.1 M094 Off site Other aqueous organic/ inorganic treatment 3.36 213 CTD000604488 40.0 9,600 0.00004 0.026 175 2.0 M077 Off site Chemical precipitation 3.28 214 ILD000608471 40.0 9,593 0.00004 0.026 174 2.0 M085 Off site Other aqueous organic treatment 3.27 215 NYD000707901 38.5 9,233 0.00004 0.025 168 1.9 M085 Off site Other aqueous organic treatment 3.15 216 KSD007246846 37.0 8,875 0.00003 0.024 161 1.9 M091 Off site Chemical precipitation in combination with biological treatment 3.03 217 OHD000816629 36.2 8,680 0.00003 0.023 158 1.8 M099 Off site Other aqueous organic/ inorganic treatment 2.96 218 TXD056542749 34.9 8,360 0.00003 0.022 152 M071 On site Chemical precipitation 2.85 219 TXD056542749 34.9 8,360 0.00003 0.022 152 M071 On site Chemical precipitation 2.85 220 CTD001449784 34.6 8,301 0.00003 0.022 151 1.7 M085 Off site Other aqueous organic treatment 2.83 221 TXD052649027 33.0 7,923 0.00003 0.021 144 1.7 M089 Off site Other aqueous organic treatment 2.70 222 IND000646943 33.0 7,920 0.00003 0.021 144 1.7 M092 Off site Chemical precipitation in combination with carbon adsorption 2.70 223 NYD003930849 32.0 7,680 0.00003 0.021 140 M136 On site Direct discharge to surface water under NPDES 0.00 224 MAR000007559 30.6 7,330 0.00003 0.020 133 M135 On site Direct discharge to sewer/ POTW 0.00 225 MAD053452637 27.1 6,500 0.00003 0.017 118 1.4 M085 Off site Other aqueous organic treatment 2.22 226 NYD980592497 26.8 6,424 0.00002 0.017 117 M136 On site Direct discharge to surface water under NPDES 0.00 227 NYD002067932 25.7 6,163 0.00002 0.016 112 1.3 M099 Off site Other aqueous organic/ inorganic treatment 2.10 48 228 OHD980681571 25.6 6,131 0.00002 0.016 111 1.3 M094 Off site Other aqueous organic/ inorganic treatment 2.09 229 KSD007246846 25.5 6,112 0.00002 0.016 111 1.3 M089 Off site Other aqueous organic treatment 2.09 230 VAD980831176 24.0 5,747 0.00002 0.015 104 M082 On site Carbon adsorption 1.96 231 IND000646943 23.1 5,535 0.00002 0.015 101 1.2 M082 Off site Carbon adsorption 1.89 232 ILD000608471 22.4 5,374 0.00002 0.014 98 1.1 M085 Off site Other aqueous organic treatment 1.83 233 ILD000608471 22.4 5,372 0.00002 0.014 98 1.1 M085 Off site Other aqueous organic treatment 1.83 234 ILD000608471 22.0 5,276 0.00002 0.014 96 1.1 M085 Off site Other aqueous organic treatment 1.80 235 MID083684290 21.9 5,250 0.00002 0.014 95 1.1 M074 Off site Chemical precipitation 1.79 236 KSD980854285 21.8 5,216 0.000020 0.014 95 1.1 M082 Off site Carbon adsorption 1.78 237 IND000646943 21.5 5,147 0.000020 0.014 94 1.1 M082 Off site Carbon adsorption 1.76 238 MOD071987416 21.0 5,031 0.000019 0.013 91 1.05 M091 Off site Chemical precipitation in combination with biological treatment 1.72 239 NYD980592497 20.9 5,000 0.000019 0.013 91 M136 On site Direct discharge to surface water under NPDES 0.00 240 NJD002385730 20.9 5,000 0.000019 0.013 91 M094 On site Other aqueous organic/ inorganic treatment 1.71 241 ILD000608471 20.8 4,988 0.000019 0.013 91 1.04 M085 Off site Other aqueous organic treatment 1.70 242 ILD000608471 20.8 4,988 0.000019 0.013 91 1.04 M085 Off site Other aqueous organic treatment 1.70 243 FL6170024412 20.5 4,918 0.000019 0.013 89 1.03 M134 Off site Deepwell injection 0.00 244 MAR000007955 20.5 4,916 0.000019 0.013 89 1.03 M083 Off site Air/ steam stripping 1.68 245 MAD000604447 20.4 4,894 0.000019 0.013 89 1.02 M078 Off site Other aqueous treatment 1.67 246 ILD000608471 20.4 4,892 0.000019 0.013 89 1.02 M085 Off site Other aqueous organic treatment 1.67 247 MAD019371079 20.2 4,848 0.000019 0.013 88 1.01 M099 Off site Other aqueous organic/ inorganic treatment 1.65 248 ILD000608471 20.0 4,796 0.000018 0.013 87 1.00 M085 Off site Other aqueous organic treatment 1.64 249 IND000646943 20.0 4,793 0.000018 0.013 87 1.00 M092 Off site Chemical precipitation in combination with carbon 1.64 49 adsorption 250 CTD980668198 19.9 4,770 0.000018 0.013 87 0.99 M092 Off site Chemical precipitation in combination with carbon adsorption 1.63 251 ILD000608471 19.2 4,604 0.000018 0.012 84 0.96 M085 Off site Other aqueous organic treatment 1.57 252 ILD000608471 19.2 4,604 0.000018 0.012 84 0.96 M085 Off site Other aqueous organic treatment 1.57 253 VAR000004978 19.1 4,590 0.000018 0.012 83 0.96 M082 Off site Carbon adsorption 1.57 254 ILD000608471 18.8 4,509 0.000017 0.012 82 0.94 M085 Off site Other aqueous organic treatment 1.54 255 ILD000608471 18.8 4,509 0.000017 0.012 82 0.94 M085 Off site Other aqueous organic treatment 1.54 256 OKD987083946 18.8 4,501 0.000017 0.012 82 0.94 M134 Off site Deepwell injection 0.00 257 CA7170090016 18.7 4,487 0.000017 0.012 82 M135 On site Direct discharge to sewer/ POTW 0.00 258 TXD056542749 17.4 4,180 0.000016 0.011 76 M071 On site Chemical precipitation 1.43 259 IND000646943 17.2 4,125 0.000016 0.011 75 0.86 M092 Off site Chemical precipitation in combination with carbon adsorption 1.41 260 DED053304770 17.1 4,110 0.000016 0.011 75 M135 On site Direct discharge to sewer/ POTW 0.00 261 FLD980729610 17.1 4,098 0.000016 0.011 75 0.85 M081 Off site Biological treatment 1.40 262 NJD006980924 17.0 4,070 0.000016 0.011 74 M082 On site Carbon adsorption 1.39 263 UTD001705029 16.5 3,963 0.000015 0.011 72 M135 On site Direct discharge to sewer/ POTW 0.00 264 IND000646943 15.8 3,789 0.000015 0.010 69 0.79 M092 Off site Chemical precipitation in combination with carbon adsorption 1.29 265 PAD004498432 15.6 3,750 0.000014 0.010 68 0.78 M081 Off site Biological treatment 1.28 266 IND085616837 14.9 3,567 0.000014 0.010 65 0.74 M085 Off site Other aqueous organic treatment 1.22 267 ILD000608471 14.8 3,549 0.000014 0.009 65 0.74 M085 Off site Other aqueous organic treatment 1.21 268 GAR000012336 14.8 3,549 0.000014 0.009 65 0.74 M082 Off site Carbon adsorption 1.21 269 NCD986177061 14.4 3,460 0.000013 0.009 63 0.72 M085 Off site Other aqueous organic treatment 1.18 50 270 IND000646943 14.3 3,427 0.000013 0.009 62 0.71 M082 Off site Carbon adsorption 1.17 271 IND000646943 14.1 3,384 0.000013 0.009 62 0.71 M082 Off site Carbon adsorption 1.15 272 ILD000608471 13.6 3,262 0.000013 0.009 59 0.68 M085 Off site Other aqueous organic treatment 1.11 273 TXD052649027 13.4 3,206 0.000012 0.009 58 0.67 M091 Off site Chemical precipitation in combination with biological treatment 1.09 274 IND000646943 13.3 3,187 0.000012 0.009 58 0.66 M082 Off site Carbon adsorption 1.09 275 IND000646943 13.0 3,108 0.000012 0.008 57 0.65 M082 Off site Carbon adsorption 1.060 276 TXD052649027 12.6 3,024 0.000012 0.008 55 0.63 M079 Off site Other aqueous treatment 1.032 277 IND000646943 12.2 2,923 0.000011 0.008 53 0.61 M082 Off site Carbon adsorption 0.997 278 CAD982437089 12.1 2,900 0.000011 0.008 53 0.60 M071 Off site Chemical precipitation 0.990 279 CTD000845198 11.9 2,854 0.000011 0.008 52 0.59 M092 Off site Chemical precipitation in combination with carbon adsorption 0.974 280 NYD980592497 11.7 2,809 0.000011 0.008 51 M136 On site Direct discharge to surface water under NPDES 0.000 281 NYD000809350 11.1 2,662 0.000010 0.0071 48 0.56 M083 Off site Air/ steam stripping 0.908 282 LAD000757286 10.7 2,574 0.000010 0.0069 47 M136 On site Direct discharge to surface water under NPDES 0.000 283 NJD002385730 10.4 2,500 0.000010 0.0067 45 M094 On site Other aqueous organic/ inorganic treatment 0.853 284 TXD062128004 10.3 2,477 0.000010 0.0066 45 0.52 M134 Off site Deepwell injection 0.000 285 OHD000816629 10.3 2,458 0.000009 0.0066 45 0.51 M099 Off site Other aqueous organic/ inorganic treatment 0.839 286 NYD980592497 10.0 2,400 0.000009 0.0064 44 M136 On site Direct discharge to surface water under NPDES 0.000 287 TND982109142 9.22 2,211 0.000009 0.0059 40 M134 On site Deepwell injection 0.000 288 CTD000604488 9.06 2,173 0.000008 0.0058 40 0.45 M085 Off site Other aqueous organic treatment 0.742 289 CTD000844332 9.02 2,163 0.000008 0.0058 39 0.45 M094 Off site Other aqueous organic/ inorganic treatment 0.738 290 TXD077603371 8.51 2,041 0.000008 0.0055 37 0.43 M121 Off site Neutralization only 0.696 291 CTD001139617 8.04 1,928 0.000007 0.0051 35 0.40 M099 Off site Other aqueous organic/ inorganic treatment 0.658 292 NYD002211324 7.82 1,875 0.000007 0.0050 34 0.39 M085 Off site Other aqueous organic 0.640 51 treatment 293 CAD000627273 7.76 1,861 0.000007 0.0050 34 0.39 M084 Off site Wet air oxidation 0.635 294 FLD980729610 7.72 1,851 0.000007 0.0049 34 0.39 M081 Off site Biological treatment 0.632 295 NYD980592497 7.61 1,825 0.000007 0.0049 33 M136 On site Direct discharge to surface water under NPDES 0.000 296 PAD001887579 6.74 1,615 0.000006 0.0043 29 0.34 M085 Off site Other aqueous organic treatment 0.551 297 CAD049904766 6.66 1,598 0.000006 0.0043 29 0.33 M099 Off site Other aqueous organic/ inorganic treatment 0.545 298 NYD980592497 6.31 1,514 0.000006 0.0040 28 M136 On site Direct discharge to surface water under NPDES 0.000 299 KSD007246846 5.88 1,410 0.000005 0.0038 26 0.29 M091 Off site Chemical precipitation in combination with biological treatment 0.481 300 NYD980592497 5.66 1,358 0.000005 0.0036 25 M136 On site Direct discharge to surface water under NPDES 0.000 301 MED985467935 5.65 1,355 0.000005 0.0036 25 0.28 M099 Off site Other aqueous organic/ inorganic treatment 0.462 302 NYD002211324 5.25 1,260 0.000005 0.0034 23 0.26 M085 Off site Other aqueous organic treatment 0.430 303 MSD054179403 5.20 1,247 0.000005 0.0033 23 M081 On site Biological treatment 0.426 304 NYD000098558 5.14 1,233 0.000005 0.0033 22 0.26 M089 Off site Other aqueous organic treatment 0.421 305 PAD067098822 5.05 1,212 0.000005 0.0032 22 0.25 M078 Off site Other aqueous treatment 0.413 306 WID068318146 4.80 1,151 0.000004 0.0031 21 0.24 M085 Off site Other aqueous organic treatment 0.393 307 UTD001705029 4.73 1,133 0.000004 0.0030 21 M135 On site Direct discharge to sewer/ POTW 0.000 308 OHD066060609 4.64 1,113 0.000004 0.0030 20 0.23 M094 Off site Other aqueous organic/ inorganic treatment 0.380 309 ILD000608471 4.40 1,055 0.000004 0.0028 19 0.22 M085 Off site Other aqueous organic treatment 0.360 310 IND000646943 4.26 1,022 0.000004 0.0027 19 0.21 M092 Off site Chemical precipitation in combination with carbon adsorption 0.349 311 NYD980592497 4.24 1,016 0.000004 0.0027 18 M136 On site Direct discharge to surface water under NPDES 0.000 52 312 OHD052324290 4.16 998 0.000004 0.0027 18 0.21 M134 Off site Deepwell injection 0.000 313 OHD980681571 4.15 995 0.000004 0.0027 18 0.21 M094 Off site Other aqueous organic/ inorganic treatment 0.339 314 OHD066060609 4.11 986 0.000004 0.0026 18 0.21 M094 Off site Other aqueous organic/ inorganic treatment 0.336 315 MID000820381 3.82 915 0.000004 0.0024 17 M134 On site Deepwell injection 0.000 316 NYD003930849 3.36 805 0.000003 0.0022 15 M136 On site Direct discharge to surface water under NPDES 0.000 317 NYD980592497 3.21 770 0.000003 0.0021 14 M136 On site Direct discharge to surface water under NPDES 0.000 318 ILD000608471 3.00 719 0.000003 0.0019 13 0.15 M085 Off site Other aqueous organic treatment 0.245 319 ILD000608471 2.88 691 0.000003 0.0018 13 0.14 M085 Off site Other aqueous organic treatment 0.236 320 NYD080480734 2.86 685 0.000003 0.0018 12 0.14 M089 Off site Other aqueous organic treatment 0.234 321 ILD000608471 2.76 662 0.000003 0.0018 12 0.14 M085 Off site Other aqueous organic treatment 0.226 322 IND000646943 2.65 635 0.000002 0.0017 12 0.13 M082 Off site Carbon adsorption 0.217 323 CT5000001107 2.52 605 0.000002 0.0016 11 0.13 M077 Off site Chemical precipitation 0.206 324 FLD981474802 2.40 576 0.000002 0.0015 10 0.12 M081 Off site Biological treatment 0.196 325 CTD001139617 2.28 547 0.000002 0.0015 10.0 0.11 M099 Off site Other aqueous organic/ inorganic treatment 0.187 326 NYD980592497 2.09 500 0.0000019 0.0013 9.1 M136 On site Direct discharge to surface water under NPDES 0.000 327 OHD005046677 1.96 471 0.0000018 0.0013 8.6 0.10 M099 Off site Other aqueous organic/ inorganic treatment 0.161 328 NY0000926436 1.88 450 0.0000017 0.0012 8.2 M136 On site Direct discharge to surface water under NPDES 0.000 329 ORD099149445 1.88 450 0.0000017 0.0012 8.2 0.09 M082 Off site Carbon adsorption 0.154 330 OHD980681571 1.83 440 0.0000017 0.0012 8.0 0.09 M082 Off site Carbon adsorption 0.150 331 FLD981474802 1.73 415 0.0000016 0.0011 7.5 0.09 M099 Off site Other aqueous organic/ inorganic treatment 0.142 332 OHD980681571 1.60 384 0.0000015 0.0010 7.0 0.08 M094 Off site Other aqueous organic/ inorganic treatment 0.131 333 OHD980681571 1.60 384 0.0000015 0.0010 7.0 0.08 M094 Off site Other aqueous organic/ inorganic treatment 0.131 53 334 ILD000608471 1.54 369 0.0000014 0.0010 6.7 0.08 M085 Off site Other aqueous organic treatment 0.126 335 NYD002211324 1.53 366 0.0000014 0.0010 6.6 0.08 M085 Off site Other aqueous organic treatment 0.125 336 NYD980592497 1.31 315 0.0000012 0.0008 5.7 M136 On site Direct discharge to surface water under NPDES 0.000 337 NYD980592497 1.29 310 0.0000012 0.0008 5.6 M136 On site Direct discharge to surface water under NPDES 0.000 338 OHD980681571 1.19 284 0.0000011 0.0008 5.2 0.06 M082 Off site Carbon adsorption 0.097 339 CT5000001107 1.15 275 0.0000011 0.00073 5.0 0.06 M077 Off site Chemical precipitation 0.094 340 ILD000608471 1.10 264 0.0000010 0.00070 4.8 0.06 M085 Off site Other aqueous organic treatment 0.090 341 MD6150004095 1.05 252 0.0000010 0.00067 4.6 M135 On site Direct discharge to sewer/ POTW 0.000 342 NYD980592497 0.92 220 0.0000008 0.00059 4.0 M136 On site Direct discharge to surface water under NPDES 0.000 343 WAD988478723 0.92 220 0.0000008 0.00059 4.0 0.05 M121 Off site Neutralization only 0.075 344 NHD500015441 0.90 216 0.0000008 0.00058 3.9 0.05 M075 Off site Chemical oxidation only 0.074 345 MD6150004095 0.88 211 0.0000008 0.00056 3.8 M135 On site Direct discharge to sewer/ POTW 0.000 346 OHD980681571 0.88 210 0.0000008 0.00056 3.8 0.04 M094 Off site Other aqueous organic/ inorganic treatment 0.072 347 TXD050858182 0.83 199 0.0000008 0.00053 3.6 0.04 M074 Off site Chemical precipitation 0.068 348 NYD053719894 0.83 199 0.0000008 0.00053 3.6 0.04 M085 Off site Other aqueous organic treatment 0.068 349 ILD005158274 0.77 184 0.0000007 0.00049 3.3 0.04 M099 Off site Other aqueous organic/ inorganic treatment 0.063 350 NYD980592497 0.68 162 0.0000006 0.00043 2.9 M136 On site Direct discharge to surface water under NPDES 0.000 351 NYD980592497 0.66 159 0.0000006 0.00042 2.9 M136 On site Direct discharge to surface water under NPDES 0.000 352 ILD000608471 0.66 158 0.0000006 0.00042 2.9 0.03 M085 Off site Other aqueous organic treatment 0.054 353 NYD080480734 0.60 144 0.0000006 0.00038 2.6 0.03 M089 Off site Other aqueous organic treatment 0.049 354 OHD980681571 0.50 120 0.0000005 0.00032 2.2 0.03 M094 Off site Other aqueous organic/ inorganic treatment 0.041 54 355 NYD002211324 0.49 118 0.0000005 0.00031 2.1 0.02 M078 Off site Other aqueous treatment 0.040 356 WAD009249863 0.48 116 0.0000004 0.00031 2.1 0.02 M082 Off site Carbon adsorption 0.039 357 CTD001186212 0.46 110 0.0000004 0.00029 2.0 0.02 M085 Off site Other aqueous organic treatment 0.038 358 ALD000622464 0.46 110 0.0000004 0.00029 2.0 0.02 M079 Off site Other aqueous treatment 0.038 359 OHD980681571 0.45 108 0.0000004 0.00029 2.0 0.02 M094 Off site Other aqueous organic/ inorganic treatment 0.037 360 ILD000608471 0.44 106 0.0000004 0.00028 1.9 0.02 M085 Off site Other aqueous organic treatment 0.036 361 NYD980592497 0.42 100 0.0000004 0.00027 1.8 M136 On site Direct discharge to surface water under NPDES 0.000 362 AKD009252230 0.41 98 0.0000004 0.00026 1.8 0.02 M082 Off site Carbon adsorption 0.033 363 ORD009227398 0.31 75 0.0000003 0.00020 1.4 0.02 M082 Off site Carbon adsorption 0.0254 364 GAD980845077 0.30 73 0.0000003 0.00019 1.3 0.02 M099 Off site Other aqueous organic/ inorganic treatment 0.0248 365 PAD003038056 0.30 72 0.0000003 0.00019 1.3 0.02 M091 Off site Chemical precipitation in combination with biological treatment 0.0245 366 NYD980592497 0.29 70 0.0000003 0.00019 1.3 M136 On site Direct discharge to surface water under NPDES 0.0000 367 CTD001149277 0.23 56 0.0000002 0.00015 1.0 0.012 M094 Off site Other aqueous organic/ inorganic treatment 0.0190 368 GAD981224991 0.23 54 0.0000002 0.00014 1.0 0.011 M075 Off site Chemical oxidation only 0.0184 369 PAD987271848 0.23 54 0.0000002 0.00014 1.0 0.011 M094 Off site Other aqueous organic/ inorganic treatment 0.0184 370 ILD000608471 0.22 53 0.0000002 0.00014 1.0 0.011 M085 Off site Other aqueous organic treatment 0.0180 371 CT5000001107 0.21 50 0.00000019 0.00013 0.9 0.010 M077 Off site Chemical precipitation 0.0171 372 TXD050858182 0.20 48 0.00000018 0.00013 0.9 0.010 M077 Off site Chemical precipitation 0.0164 373 MID980683775 0.20 47 0.00000018 0.00013 0.9 0.010 M091 Off site Chemical precipitation in combination with biological treatment 0.0161 374 WA0000189431 0.19 47 0.00000018 0.00012 0.8 0.010 M082 Off site Carbon adsorption 0.0160 375 NYD002211324 0.18 43 0.00000017 0.00012 0.8 0.009 M085 Off site Other aqueous organic treatment 0.0148 376 NYD980592497 0.17 40 0.00000015 0.00011 0.7 M136 On site Direct discharge to surface water under NPDES 0.0000 55 377 CTD001169010 0.10 24 0.00000009 0.00006 0.4 0.005 M077 Off site Chemical precipitation 0.0082 378 NYD980592497 0.10 24 0.00000009 0.00006 0.4 M136 On site Direct discharge to surface water under NPDES 0.0000 379 NYD980592497 0.08 20 0.00000008 0.00005 0.4 M136 On site Direct discharge to surface water under NPDES 0.0000 380 NYD980592497 0.06 15 0.00000006 0.00004 0.3 M136 On site Direct discharge to surface water under NPDES 0.0000 381 ILD000608471 0.04 10 0.00000004 0.00003 0.2 0.002 M085 Off site Other aqueous organic treatment 0.00327 382 NYD980592497 0.02 5 0.000000018 0.000012 0.1 M136 On site Direct discharge to surface water under NPDES 0.00000 383 NYD980592497 0.01 2 0.000000006 0.000004 0.0 M136 On site Direct discharge to surface water under NPDES 0.00000 Column totals = 51,496,157 12,349,198,388 47 32,984 224,530,880 1,454 3,631,822 Explanatory Notes: ( a) * Wastewater: to: sludge generation ratio represents a median of 2.4% solid & organic matter in wastewaters, and a median 30.0% solid & organic matter in sludges ( based on USEPA Office of Solid Waste 1996 " National Hazardous Waste Constituent Survey" database). In comparison, typical municipal wastewaters are 0.02% solid & organic matter, and typical municipal raw sludges are 4% solid & organic matter ( source: Viessman & Hammer, " Water Supply & Pollution Control", Harper Collins, 1985, p. 572). ( b) ** Imputed sludge quantities in this table are based on OSW's estimation method applying a survey sample derived median wastewater: to: sludge generation ratio, which may not accurately represent sludge quantities for any single facility in this table, but may serve to approximate overall total sludge volumes generated. Furthermore, not every facility on this list may generate a spent solvent wastewater treatment sludge because some facilities manage these wastewaters offsite, and/ or some facilities manage these wastewaters in units which do not necessarily generate a sludge ( e. g. liquid combustion unit or deepwell injection). Consequently, the imputed sludge quantities displayed in this table represent hypothetical quantities of sludge which may be generated if the spent solvent wastewaters were hypothetically managed in wastewater treatment units which generated sludge as a by product of the unit's operation ( e. g. wastewater biological treatment units). 56 Hypothetical Wastewater Mangaement Cost Savings Benchmark: If Revised " Headworks Exemption" Hypothetically Applied to All F002 and F005 Aqueous Spent Solvent Wastestreams Currently Managed in Wastewater Treatment Systems ( year 2000$)

A B C D E F G H I Discount rate for annualizing capital costs> 3% $ 18/ ton $ 300/ trip $ 252/ ton < Key unit cost factors*

Waste stream item EPA_ ID 1997 aqueous F002 or F005 spent solvent managed ( tons/ year) RCRA hazardous waste water manage ment system capital cost** RCRA hazardous waste water management system capital cost** ( annualized over 10 years) RCRA hazardous waste water management system annual O& M cost** Annual trucking costs for offsite management Annual RCRA manifest cost for offsite shipping NOTE: The costs in these columns are HYPOTHETICAL premised on all imputed wastewater sludge quantities: ( 1) hypothetically generated by wastewater treatment units, and ( 2) managed as RCRA hazardous wastes Hypothetical sludge management cost if RCRA haz waste ($ per year) Hypothetical cnsite + offsite total annual waste management cost ( B+...+ F) Hypothetical annual cost for management as non haz waste ( in surface impoundments Hypothetical potential annnual cost savings ( G  H)