CLEAN HARBORS ENVIRONMENTAL SERVICES

--. " Starr Indemnity & Liability Company Dallas, TX 1-866-519-2522 NOTICE OF CANCELLATION FOR THIRD PARTIES AMENDATORY ENDORSEMENT Policy Number: 1000679502251 Effective Date: 11/1/2025 Named Insured: Clean Harbors, Inc. This endorsement modifies the insurance coverage form(s) listed below that have been purchased by you and evidenced as such on the Declarations page. Please read the endorsement and respective policy(ies)carefully. Auto Dealers Coverage Form, Business Auto Coverage Form, Business Auto Physical Damage Coverage Form, Commercial General Liability Coverage Form, Contractor's Pollution Liability Coverage Form, Electronic Data Liability Coverage Form, Excess Liability Policy Form, Garage Coverage Form, Liquor Liability Coverage Form, Motor Carrier Coverage Form, Owners And Contractors Protective Liability Coverage Form-Coverage For Operations Of Designated Contractor, Pollution Liability Coverage Form Designated Sites, Products/Completed Operations Liability Coverage Form, Product Withdrawal Coverage Form, Professional Liability Coverage Form, Railroad Protective Liability Coverage Form, Site Pollution Liability Coverage Form, Special Protective And Highway Liability Policy-New York Department Of Transportation, Truckers Coverage Form, Underground Storage Tank Policy Designated Tanks. It is agreed that in the event the "Insurer"cancels the policy for any reason other than non-payment of premium, the "First Named Insured" must, within five (5) days of receiving the notice of cancellation, provide the "Insurer", either directly or through the retail broker, with a written list of certificate holder(s) ("Schedule")that the "First Named Insured" is contractually obligated to notify in the event that the policy is cancelled. The"Schedule" must specify the name and current email address of a contact for each certificate holder. The "Insurer"will provide notice at least 30 days prior to cancellation date to the certificate holder(s) listed in the"Schedule" by email. This notification of a pending cancellation of coverage is intended as a courtesy only. The "Insurer's" failure to provide such notice will neither extend the policy cancellation nor negate cancellation of the policy; nor will this failure result in obligation or liability of any kind upon the "Insurer", its agents or representatives. This endorsement does not affect, in any way, coverage provided under this policy, the cancellation of this policy or the effective date of cancellation. The following definitions apply to this endorsement: 1. "First Named Insured" means the named insured shown in the Declarations Page of this policy. 2. "Insurer" means the insurance company shown in the header on the Declarations Page of this policy. 3. "Schedule" means the written list of certificate holder(s). All other terms and conditions of this Policy remain unchanged. Manuscript(1022) Page 1 of 1 Copyright©Starr Indemnity&Liability Company. All rights reserved. Includes copyrighted material of Insurance Services Office,Inc.with its permission. 20154: 3 of 6