Certification and Accreditation Status

Scott Teague, QSTI Grace Consulting, Inc. 510 Dickson St Wellington, Oh 44090 February 27, 2012 To whom it may concern: This letter is to address Grace Consulting, Inc.'s AETB Certification in regards to ASTM D-7036. GCI is currently a Self-Certified AETB and operates under the ASTM D-7036 standard set to go into effect March of this year. As President of GCI, I take great pride in our compliance with this new standard as well as our continued efforts in providing emissions testing services of the highest quality standard. Not only are we a Self-Certified AETB, we are currently in the process of obtaining outside accreditation as well. Currently GCI has been awarded Interim Accreditation from the Stack Testing Accreditation Council (STAC). Once the outside accreditation process through STAC is complete we will provide you the supporting documentation upon request. If at any time you have any questions regarding our AETB practices, please feel free to contact myself, Carl Vineyard (Vice President of Quality Assurance) or Tyson Stiles (Quality Manager). All can be reached at 440-647-6672 or through our website at www.gcitest.com. Sincerely, Scott Teague, QSTI President