Permit No. MAG910000 Permit No. NHG910000 FACT SHEET ATTACHMENT A 2005 Remediation General Permit Fact Sheet Excerpts Table of Contents Please note, the Table of Contents has been created to help readers identify and navigate this Appendix; it was not part of the 2005 Remediation General Permit Fact Sheet. SELECTION OF PARAMETERS AND LIMITS....................................................................................................2 A. GENERAL APPROACH ............................................................................................................................................2 B. EXAMPLES - SELECTION OF PERMIT PARAMETERS ................................................................................................3 Example #1...........................................................................................................................................................3 Example #2...........................................................................................................................................................4 Example #3...........................................................................................................................................................4 Example #4...........................................................................................................................................................4 DISCUSSION OF SPECIFIC PARAMETERS AND ASSOCIATED EFFLUENT LIMITATIONS IN RGP ..4 1. TOTAL SUSPENDED SOLIDS (TSS).........................................................................................................................7 a. General Limit ...................................................................................................................................................7 b. TSS limit for hydrostatic testing.......................................................................................................................7 2. TOTAL RESIDUAL CHLORINE (TRC) .....................................................................................................................8 3. TOTAL PETROLEUM HYDROCARBONS (TPH)........................................................................................................9 4. CYANIDE.............................................................................................................................................................11 5. - 9. BENZENE, TOLUENE, ETHYLBENZENE, XYLENES (BTEX .............................................................................12 a. Limiting BTEX and Benzene ..........................................................................................................................12 2) Setting the Limit for BTEX ........................................................................................................................................ 14 3) Setting the General Limit for Benzene ....................................................................................................................... 14 b. Benzene limit for hydrostatic testing..............................................................................................................16 10. ETHYLENE DIBROMIDE (EDB) - (ALSO 1,2-DIBROMOMETHANE)......................................................................17 11. - 13. OXYGENATE COMPOUNDS: METHYL-TERT-BUTYL ETHER (MTBE), TERT-BUTYL ALCOHOL(TBA), TERT- AMYL METHYL ETHER (TAME) .............................................................................................................................17 a. Background on gasoline oxygenates..............................................................................................................18 b. Consideration of gasoline oxygenates for permit limits.................................................................................18 c. Establishing limits for gasoline oxygenates ...................................................................................................20 1) MtBE .......................................................................................................................................................................... 20 2) TBA and TAME ......................................................................................................................................................... 21 14. NAPHTHALENE..................................................................................................................................................22 15. - 28. CHLORINATED VOLATILE ORGANIC COMPOUNDS .....................................................................................23 29. & 30. ACETONE AND 1,4 DIOXANE ....................................................................................................................27 31. & 32. TOTAL PHENOL AND PENTACHLOROPHENOL (PCP) ................................................................................27 33. & 34. PHTHALATES AND BIS (2-ETHYLHEXYL) PHTHALATE.............................................................................29 35. - 36. POYLCYCLIC AROMATIC HYDROCARBONS (PAHS) ..................................................................................30 37. POLYCHLORINATED BIPHENYLS (PCBS)...........................................................................................................33 39. TO 50.- METALS LIMITATIONS ...........................................................................................................................34 a. Background ....................................................................................................................................................34 b. Selection of Parameters .................................................................................................................................35 c. Selection of Limits ..........................................................................................................................................35 d. Consideration of Hardness ............................................................................................................................37 Total Recoverable Metal....................................................................................................................................38 e. Consideration of Dilution Factors .................................................................................................................38 f. Description and Rationale for Limits..............................................................................................................41 Antimony ........................................................................................................................................................................ 41 Remediation General Permit Page 1 of 50 Fact Sheet – Attachment A Permit No. MAG910000 Permit No. NHG910000 Arsenic............................................................................................................................................................................ 41 Cadmium......................................................................................................................................................................... 41 Chromium ....................................................................................................................................................................... 42 Copper............................................................................................................................................................................. 42 Lead ................................................................................................................................................................................ 43 Mercury........................................................................................................................................................................... 43 Nickel.............................................................................................................................................................................. 43 Selenium ......................................................................................................................................................................... 44 Silver............................................................................................................................................................................... 44 Zinc................................................................................................................................................................................. 44 Chloride .......................................................................................................................................................................... 45 Iron.................................................................................................................................................................................. 45 WATER QUALITY DERIVED LIMITS................................................................................................................46 A. SOLIDS, COLOR, AND TURBIDITY .......................................................................................................................46 B. PH ......................................................................................................................................................................47