Item 28 - Water Well, Pump, and Motor Rehabilitation and Repair Services

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AI RBURST® W 188 57618 Oak Grove Drive T-er*O.OLDOl , L L.0 Muskego, WI 53150-9208 'Welf(Deveropment r6L)Ile (262)679-3903 E,,. (262)-67YA620 www.airbursttechnology.com E-mail: billC(Dairbursttechnology.com Process and Equipment Comparisons August 17, 2018 I. AirBurst® equipment is manufactured and supported by a USA company, parts are available in Texas, USA The Air -Shock equipment is Israeli, (also known as BoreBlast 11) 2. The first use of the AirBurst process was February of 1995, Air -Shock was first used in the USA in approximately 2003. 3. The AirBurst air gun is easily repairable in the field without the use of exotic tools; repair parts are readily available in the USA. 4. Patented air guns used in the AirBurst process are manufactured by a USA company, Teledyne Marine Corporation that has over 50 years of experience and owns numerous related patents. The air guns are specifically designed for hostile environment use in water wells and were never designed to clean silos. 5. Several Bolt air guns are capable of continuous operation up to 3000 psi. AirBurst air gun discharge ports are configured to produce a single bubble for efficient mass displacement of the water produced by the expanding bubble; it is not just a narrow slot and jetting action as depicted by the Air -Shock literature. Creation ofthe bubble and subsequent collapse creates a negative pressure which withdraws dislodged material through the screen or out ol'a rock fracture. 6. The timing between energy discharges is critical as energy bursts too close together do not allow for dislodged debris to settle before the succeeding burst occurs. AirBurst is the only process that can electronically regulate the timing and allow the debris to exit the path of the next energy discharge, thereby reducing the amount of debris that is pushed back into the formation. 7. The Bolt air gun is operated by a solenoid valve integral with the air gun which allows complete surface control of the down hole energy discharge from the air gun and critical shuttle opening and closing timing which is of'paramount importance especially at great depths and in extremely abrasive environments. The Air - Shuck device has no such control and is operated by a preset pressure adjustment made prior to lowering the device into the well. When the preset pressure is reached the air gun fires, the unchecked timing results in a very rapid energy release every one half to three seconds and is controlled by internally changing an orifice. Air -Shock has no shuttle timing control and requires removal from the well to make pressure adjustments, resulting in a lot of wasted time, 8. The discharge pores of the Bolt Deep Hole Service air gun are closed at all times except For the actual energy discharge. This keeps abrasive well debris out of the shuttle opening, which enhances dependability and greatly extends operational life of the air gun.