May 17 th New Youth Services Center Architect s Contract Amendment Building Commissioning Services. Dear Mr. Carrizal:

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1 May 17 th 2011 Ernie Carrizal, P.E. County of El Paso, Texas Road & Bridges Public Works Administration 500 E. San Antonio, 4 th Floor El Paso, Texas Re: New Youth Services Center Architect s Contract Amendment Building Commissioning Services Dear Mr. Carrizal: In reference to our agreement for the New Youth Services Center, I am proposing for approval by the County Court a fee increase to the contract to include costs for the Commissioning of Energy Systems and the building envelope for the Energy Star rating compliance not to exceed $30,000 (Thirty- Thousand Dollars). Wright & Dalbin Architects will be contracting with two firms to provide these services. The firm Engineering Services Co would perform the Commissioning of Energy Systems which calls for the plan and submittal review of HVAC plans and specifications, installation verification of HVAC equipment, pre- performance tests for installation and verify operability of all HVAC equipment, performance test to measure and verify unit operating parameters, and compile and submit a formal commissioning report. Paul Ricketts PE, CxA, LEED AP will be the engineer CxA for the project. Senercon will perform the Energy Star compliance commissioning. It includes the building envelope design and construction review and inspections, building structure and ductwork pressure testing. I therefore, request an amendment of $30,000 to our contract for the commissioning of the Youth Services Center building. The site work construction has started and we will need to get these consultants started right away if approved by County Commissioners. Sincerely, Frederic Dalbin, AIA, LEED AP Project Architect CC: County Judge Veronica Escobar 2112 murchison drive el paso texas tel:

2 BUILDING COMMISSIONING

3 "Buildings that are properly commissioned cost less to operate and provide greater comfort for occupants." U.S. Department of Energy

4 The Definition of Commissioning The systematic process of assuring by verification and documentation, from the design phase to a minimum of one year after construction, that all facility systems perform interactively in accordance with the design documentation and intent, and in accordance with the owner s operational needs, including preparation of operation personnel NCBC, Total Building Commissioning

5 Organizations that have researched commissioning claim that owners can achieve savings in operations of $4 over the first five years of occupancy as a direct result of every $1 invested in commissioning. Nat l Institute of Building Sciences Whole Building Design Guide Accumulated savings from Commissioning

6 Benefits from Commissioning Helps ensure a working building is delivered to the owner Provides better construction and a better facility Increased energy efficiency Helps to ensure ease of maintenance Healthier indoor environment

7 Types of Commissioning Building Envelope Commissioning (Enhanced Commissioning) Energy Star 3 rd Party Requirement: Site Inspections & Reports Air Infiltration Testing & Report Wall Cavity Infrared Testing & Report

8 Types of Commissioning Building Energy Systems Mechanical Equipment Heating & Cooling Systems, Ventilation Systems, Equipment Control Systems Lighting & Day Lighting Control Domestic Hot Water Water Heaters, Circulating Pumps

9 Youth Services Center Economic Summary TRACE Model Comparing Roof Top Seer 13 vs Variable Refrigeration System, the YSC is: Saving Yearly over $57,000 in Energy Cost Alone 1 Year of Life Cycle Pay Back

10 Youth Services Center Economic Summary TRACE Model Comparing Roof Top Seer 13 vs Variable Refrigeration System, the YSC is: Saving Yearly over $15,000 in Maintenance Cost

11 Youth Services Center Designed to Earn the Energy Star Estimated Yearly Energy Use Total Annual Site Energy (kbtu) Total Annual Energy Cost Designed Target Average Building 758, ,035 1,804,306 $22,384 $ 28,242 $ 53,245

12 Youth Services Center Potential Inefficiency Costs Target Energy Star 25 % Inefficiency 50% Inefficiency Total Annual Energy Cost $ 29,000 $ 36,000 $43,500 Maintenance Cost Indoor Air Quality Cx Cost $35,000 $50,000 $62,500 $75,000 $10,000 $20,000 Total $114,000 $108,000 $138,500

13 Youth Services Center Estimated Yearly Projections Health Maintenance Energy Use Year 1 Year 2 Year 3 Year Year 1 Year 2 Year 3 Year 4

14 Organizations that have researched commissioning claim that owners can achieve savings in operations of $4 over the first five years of occupancy as a direct result of every $1 invested in commissioning. Nat l Institute of Building Sciences Whole Building Design Guide Accumulated savings from Commissioning