**EXHIBIT 10.37****SECOND AMENDMENT TO LEASE**This Second Amendment To Lease (“Amendment”), is made effective as of March 21, 2008, by andbetween Alaska Consolidated DE LLC, YABQ DE LLC, and KDC Idaho DE LLC known as Lakepointe Centre ICo-Tenancy, successor to M&S Prime Properties, Ltd. (“Landlord”) and American Ecology Corporation(“Tenant”).**WITNESSETH****:****WHEREAS**, Landlord and Tenant entered into that certain Lease Agreement dated April 18, 2002 andamended by the First Amendment to Lease dated November 18, 2005 (“Lease”) for that certain parcelof real property and the improvements located thereon known as Lakepointe Centre I, 300 EastMallard Drive, Suite 300, Boise, Idaho (“Premises”);**WHEREAS**, Landlord and Tenant desire to expand the Premises of the Lease and to amend the Lease incertain respects as provided below.**NOW, THEREFORE**, for good and valuable consideration, the receipt and sufficiency of which arehereby acknowledged, the parties hereto agree as follows:1. Construction. Any capitalized term not defined in this Amendment shall have the meaninggiven to it in the Lease. In the event of any inconsistency between the provisions of the Leaseand this Amendment, the provision of this Amendment shall control. The recitals are incorporatedherein by reference and shall be used to construe the meaning of this Amendment.2. Premises. Section 6 of the Basic Lease Information of the Lease is amended to add partof the southeastern portion of Suite 370 to the Premises containing approximately 567 rentablesquare feet as shown in Exhibit A attached hereto, which will make the total Premises 11,492rentable square feet.3. Base Rent. The Base Rent provided in Section 10 of the Basic Lease Information of theLease shall be amended as follows:     PERIOD MONTHLY INSTALLMENTS Months OF BASE RENT      04/01/08-01/31/09 $18,195.67 (at an annual rate of $19.00 per rsf)02/01/09-01/31/10 $18,674.50 (at an annual rate of $19.50 per rsf)02/01/10-01/31/11 $19,153.33 (at an annual rate of $20.00 per rsf)4. Tenant’s Proportionate Share: Section 13 of the Basic Lease Information for Tenant’sshare of the operating expenses shall be amended from 17.17% to 17.99%.5. Improvements.  At Tenant’s sole costs and expense, Tenant shall construct a demisingwall between Suite 370 and Suite 300, secure and/or sheetrock break room door between Suite 300 andSuite 370. All additional tenant improvements being constructed by Tenant in Tenant’s existingPremises shall be at Tenant’s sole cost and expense. In addition, Tenant shall be responsible forall costs required for fire, life, or safety changes and/or or fire sprinkler modifications to thePremises per the attached space plan shown in Exhibit A and as required by the City of Boise Code.Tenant shall provide Landlord with architectural plans for the construction of the demising walland tenant improvements pursuant to Section 9 of the Lease for Landlord to approve. Tenant shallobtain any necessary permits for such construction.6. Other Provisions. Except as modified by this Amendment, all other terms and conditionsof the Lease shall remain in full force and effect.
 
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7. Counterparts. This Amendment may be executed in counterparts, each of which shallconstitute an original, and all of which, together, shall constitute one document.8. Execution by Both Parties. Submission of this instrument for review orsignature by Tenant does not constitute a reservation of or option to lease, and it is noteffective as an amendment or otherwise binding upon either Landlord or Tenant until this Amendmenthas been executed and delivered by both Landlord and Tenant.**IN WITNESS WHEREOF**, the parties hereto have executed this Amendment as of the date and yearfirst above written.[**SIGNATURES ON NEXT PAGE]**
 
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      **LANDLORD:**