San Diego Precast Concrete, Inc. Watch

from S-1 2 pages April 27, 2010 Master MIX Concrete, LLC Unanimous Written Consent of the Member

from S-1 3 pages Operating Agreement of Master MIX Concrete Limited Liability Company

from S-1 1 page New Jersey Division of Reverme Llndtedlfability Comp^ 5TI&.FORM May T? Oud B Amend Actitfflcait Ofjfbnnaiion Ofiliofitej Uabtfrqi Ccngaay Ofl Fiio -W^tril*. DCPARTROENL.OFFTE Treajiny, Applicants Nwhwaru Otrirt Cptnpbmt* Wltt Kl^ 4%

from S-1 2 pages New Jersey Department of Treasury Division of Revenue Certificate of Formation Master MIX Concrete Limited Uabiluy Company 0400260751 in Testimony Whereof, I Have Hereunto Set My Hand and Affixed My Official Seal at Trenton, Mis 3rd Day of December, 2008k. David Rousseau State Treasurer Certificate Number: 113149480 Verify This Rertjfirate Online at Hiips-//Vnn»ljuitej\).us/rrnt_2latulinscert/jsp/vtruy_cen.)sp

from S-1 1 page State of Delaware Secretary of State Division of Corporations Daiivrd 1220 Pm 09/30/2008 ‘Led 12:10 Pm 09/30/2008 080998702 — 4082057 File Certificate of Amendment of Certificate of Incorporation of Concrete )Oocji Acquisition, Inc. Ills Hereby Certified That: 1. the Name of the Corporalion (Hereinafier Called the “Corporation”) Is Concrete XXXII Acquisition, Inc. 2. the Certificate of Incorporation of the Corporation Is Hereby Amended by Striking Out Article First Thereof and by Substituting in Lieu of Said Article First the Following New Article First: “First: The Name of the Corporation (Hereinafter Called the “Corporation”) Is: Usc Technologies, Inc.” 3. the Amendment of the Certificate of Incorporation Herein Certified Has Been Duly Adopted and Written Consent Has Been Given in Accordance With the Provisions of Sections 228 and 242 of the General Corporation Law of the State of Delaware. Signed on the 30’ Day of September. 2008. C(n’t M. Lindema L, Sole Director and President

from S-1 12 pages Articles of Incorporation or Bylaws

from S-1 2 pages Articles of Incorporation or Bylaws

from S-1 2 pages April 27, 2010 Riverside Materials, LLC Unanimous Written Consent of the Member the Undersigned, Being the Sole Member (The “Member”) of Riverside Materials, LLC, a Delaware Limited Liability Company (The “Company”) Hereby Takes the Following Actions and Adopts the Following Resolutions by Written Consent Pursuant to the Limited Liability Company Agreement of the Company (The “Operating Agreement”) and Section 18-302 of the Delaware Limited Liability Company Act (As Amended From Time to Time, the “Dllca”): Whereas, It Is Deemed Advisable and in the Best Interests of the Company That the Operating Agreement Be Amended; Whereas, the Member May Amend the Company’s Operating Agreement in Accordance With Article X of the Operating Agreement; Resolved, That the Operating Agreement Is Hereby Amended by Inserting the Following Provision: “Article XIII. Bankruptcy of the Member. Notwithstanding Any Other Provision of This Agreement, the Bankruptcy of a Member (As Defined in Sectoion 18-101 of the Dllca) or Any Other Event Set Forth in Section 18-304 of the Dllca Shall Not Cause Such Member to Cease to Be a Member of the Company and Upon the Occurrence of Such an Event, the Company Shall Continue Without Dissolution.”

from S-1 6 pages Of Concrete Acquisition II, LLC the Undersigned, Being the Sole Member of Concrete Acquisition II, LLC, a Delaware Limited Liability Company (The “Company”), Does Hereby Execute This Limited Liability Company Agreement of the Company Effective the 25th Day of June, 2008. the Company Was Formed as a Delaware Limited Liability Company on the 24th Day of June, 2008, Upon the Filing of Its Certificate of Formation With the Secretary of State of the State of Delaware

from S-1 1 page State of Delaware Secretary of State Division of Corporations Delivered 12r30 P1i 08/06/2008 Filed 12:09 Pm 08/06/2008 Srv 080850322 — 4566387 File State of Delaware Certificate of Amendment Name of Limited Liability Company: Agui5tiof1 H, LLC 2. the Certificate of Formation of the Litnhed Liability Company Is Hereby Amended US Follows; Fir3t; the Nhme of Th Limiwai Iiabüily Company I Riverido Matcrinls, LLC in Witness Whereof, the Undersigned Have Executed This Certificate on the - Day of Augu4 a . 08 Authorized Person(s) ) Name: Robert D. Hardy Print or Type

from S-1 1 page State of Delaware Secretary of State Division of Corporations Delivered 03:45 Pm 06/24/2008 Filed 03:42 Pm 06/24/2008 Srv 080724746 — 4566387 File State of Delaware Limited Liability Company Certificate O/Formation First: The Name of the Limited Liability Company Is Concrete Acquisition H, LLC Second: The Address of Its Registered Office in the State of Delaware Is 615somh Dupom Hwy in the City of D W E R — P E 1990 1 . the Name of Its Registered Agent at Suck Address Is Capitol Services, Inc. Third: (Use This Paragraph Only if the Company Is to Have a Specific Eftective Date of Dissolution: “The Latest Date on Which the Limited Liability Company Is to Dissolve Is -”) Fourth: (Insert Any Other Matters the Members Determine to Include Herein.) in Witness Whereof, the Undersigned Have Executed This Certificate of Formation This :24th Day of J” 20 Q8

from S-1 8 pages Redi-MIX, LLC This Limited Liability Company Agreement (This ‘Agreement”) of Redi-MIX, LLC (The “Company”), a Texas Limited Liability Company, by Alberta Investments, Inc. (The “Member”), a Texas Corporation, Is Effective July 3, 2007. Recitals A. the Company Was Formed on June 27, 2007 Under the Name Redi-MIX Subsidiary, LLC by Its Members Atlas Investments, Inc., a Nevada Corporation, and Redi-MIX Management, Inc., a Texas Corporation (The “Founding Members”), Each of Which Is a Wholly-Owned Subsidiary of the Member. B. Effective June 30, 2007, Redi-MIX, LP, a Texas Limited Partnership, Merged With and Into the Company, With the Company Surviving. C. Effective July 2, 2007, the Company Changed Its Name to Redi-MIX, LLC. D. Effective July 3, 2007, the Founding Members Distributed Their Respective Membership Interests in the Company to the Member, Which as a Result Owns 100% of the Membership Interest in the Company. Agreement 1. Formation, Name; Place of Business

from S-1 2 pages Articles of Incorporation or Bylaws

from S-1 1 page Articles of Incorporation or Bylaws

from S-1 1 page In the Office of Th Certificate of Formation N. of State of Texas of Jun27 Redi-MIX Subsidiary, LLC

from S-1 4 pages April 27, 2010 Local Concrete Supply & Equipment, LLC Master MIX, LLC Pebble Lane Associates, LLC

from S-1 6 pages $E—bne—us—standard Right—flushhead

from S-1 1 page State of Delaware Secretazy of State Division of Corporations Delivered 01:53 Pm 09/30/2008 F7led 01:26 Pm 09/30/2008 Srv 080999218 - 4606836 Etle’ State of Delaware Limited Liability Company Certificate of Forj4ation First: The Name of the Limited Liability Company Is Pebbic Lanc A55oc1ntcs, LL.C Second: The Address of Its Registered Office Hi the State of Delaware Is 0i5 South Dupont Liwyin the City of Dovcr, Delaware Zip Code 19901. the Name of Its Registered Agent at Such Address Is Cnpfioi Servicc. Inc. Third; (Use This Paragraph Only if the Company Is to Have a Specific Effective Date of Dissolution: “The Latest Dote on Which the Limited Liability Company Is La Dissolve Is II) Fourth: (Insert Any Other Matters the Members Determineto Include Herein.) in Witness Wltereof,liieundesignedhavecxecutcdtliiscertific a Ffarmation This 30thday of Scptember. , 2008 B a Ihorized Person (S) Nn • Tthiii M. Linthmrii

from S-1 1 page State of Delaware Certificate of Correction of a Limited Liability Company to Be Filed Pursuant to Section 18-211

from S-1 6 pages The Undersigned, Being the Sole Member of Nyc Concrete Materials, LLC, a Delaware Limited Liability Company (The “Company”), Does Hereby Execute This Limited Liability Company Agreement of the Company Effective the 25th Day of September, 2008. the Company Was Formed as a Delaware Limited Liability Company on the 25th Day of September, 2008, Upon the Filing of Its Certificate of Formation With the Secretary of State of the State of Delaware