X0101 EFFECT 33 LIVE 2013-04-15 10:00:00

S-4

0000822818 CLEAN HARBORS INC 333-187708 0001330873 CLEAN HARBORS ARAGONITE, LLC 333-187708-70 0001330874 CLEAN HARBORS ARIZONA, LLC 333-187708-69 0001330875 CLEAN HARBORS BATON ROUGE, LLC 333-187708-68 0001330876 CLEAN HARBORS BDT, LLC 333-187708-67 0001330877 CLEAN HARBORS BUTTONWILLOW, LLC 333-187708-66 0001330878 CLEAN HARBORS CHATTANOOGA, LLC 333-187708-65 0001330918 Clean Harbors Clive, LLC 333-187708-64 0001330879 CLEAN HARBORS COFFEYVILLE, LLC 333-187708-63 0001330880 CLEAN HARBORS COLFAX, LLC 333-187708-62 0001330882 CLEAN HARBORS DEER PARK, LLC 333-187708-61 0001330883 CLEAN HARBORS DEER TRAIL, LLC 333-187708-60 0001330884 CLEAN HARBORS DISPOSAL SERVICES, INC. 333-187708-59 0000925491 CLEAN HARBORS ENVIRONMENTAL SERVICES INC 333-187708-58 0001330886 CLEAN HARBORS FLORIDA, LLC 333-187708-57 0001525322 Sanitherm USA, Inc. 333-187708-56 0001525323 Peak Energy Services USA, Inc. 333-187708-55 0001525324 ARC Advanced Reactors & Columns, LLC 333-187708-54 0001525326 Clean Harbors Catalyst Technologies, LLC 333-187708-53 0001330899 Plaquemine Remediation Services, LLC 333-187708-52 0001525327 Clean Harbors Exploration Services, Inc. 333-187708-51 0001525328 Clean Harbors Industrial Services, Inc. 333-187708-50 0001330867 Altair Disposal Services, LLC 333-187708-49 0001330868 BATON ROUGE DISPOSAL, LLC 333-187708-48 0001330869 BRIDGEPORT DISPOSAL, LLC 333-187708-47 0001330870 CH INTERNATIONAL HOLDINGS, LLC 333-187708-46 0001330871 CLEAN HARBORS ANDOVER, LLC 333-187708-45 0001330872 CLEAN HARBORS ANTIOCH, LLC 333-187708-44 0001330900 CLEAN HARBORS PPM, LLC 333-187708-43 0001330887 CLEAN HARBORS GRASSY MOUNTAIN, LLC 333-187708-42 0001330888 CLEAN HARBORS KANSAS, LLC 333-187708-41 0000925493 CLEAN HARBORS KINGSTON FACILITY CORP 333-187708-40 0001330889 CLEAN HARBORS LAPORTE, LLC 333-187708-39 0001330890 CLEAN HARBORS LAUREL, LLC 333-187708-38 0001330892 CLEAN HARBORS LONE MOUNTAIN, LLC 333-187708-37 0001330893 CLEAN HARBORS LONE STAR CORP. 333-187708-36 0001330894 CLEAN HARBORS LOS ANGELES, LLC 333-187708-35 0001330895 CLEAN HARBORS (MEXICO), INC. 333-187708-34 0000925502 CLEAN HARBORS OF BALTIMORE INC 333-187708-33 0000925504 CLEAN HARBORS OF BRAINTREE INC 333-187708-32 0000925499 CLEAN HARBORS OF CONNECTICUT INC 333-187708-31 0001330898 CLEAN HARBORS PECATONICA, LLC 333-187708-30 0001330902 CLEAN HARBORS REIDSVILLE, LLC 333-187708-29 0001330904 CLEAN HARBORS SAN JOSE, LLC 333-187708-28 0001330906 CLEAN HARBORS SERVICES, INC. 333-187708-27 0001330907 CLEAN HARBORS TENNESSEE, LLC 333-187708-26 0001330909 CLEAN HARBORS WESTMORLAND, LLC 333-187708-25 0001330910 CLEAN HARBORS WHITE CASTLE, LLC 333-187708-24 0001330911 CROWLEY DISPOSAL, LLC 333-187708-23 0001330914 DISPOSAL PROPERTIES, LLC 333-187708-22 0001330915 GSX DISPOSAL, LLC 333-187708-21 0001330917 HILLIARD DISPOSAL, LLC 333-187708-20 0000925496 MURPHYS WASTE OIL SERVICE INC 333-187708-19 0001330921 ROEBUCK DISPOSAL, LLC 333-187708-18 0001330922 SAWYER DISPOSAL SERVICES, LLC 333-187708-17 0001330923 SERVICE CHEMICAL, LLC 333-187708-16 0000925495 SPRING GROVE RESOURCE RECOVERY INC 333-187708-15 0001473858 CLEAN HARBORS RECYCLING SERVICES OF CHICAGO, LLC 333-187708-14 0001473859 Clean Harbors Development, LLC 333-187708-13 0001473864 CLEAN HARBORS WILMINGTON, LLC 333-187708-12 0001473860 CLEAN HARBORS RECYCLING OF OHIO, LLC 333-187708-11 0001473934 CLEAN HARBORS EL DORADO, LLC 333-187708-10 0001477866 DuraTherm, Inc. 333-187708-09 0001571748 Safety-Kleen Envirosystems Co 333-187708-08 0001571760 Safety-Kleen Envirosystems Co of Puerto Rico, Inc. 333-187708-07 0001571746 Safety-Kleen, Inc. 333-187708-06 0001572086 Safety-Kleen International, Inc. 333-187708-05 0001572083 Safety-Kleen Systems, Inc. 333-187708-04 0001572038 Solvents Recovery Service of New Jersey, Inc. 333-187708-03 0001572080 SK Holding Company, Inc. 333-187708-02 0001330925 TULSA DISPOSAL, LLC 333-187708-01