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r Page nine B. Equipment. The Contractor shall furnish all necessary swab pumps, compressors, plungers or other needed equipment and shall develop the wells by swabbing, airlifting, surging, jetting or other such methods, approved by the Engineer, that shall give the maximum yield of water per foot of drawdown, and shall extract from the water-bearing formation the maximum practical quantity of such sands as may, during the life of the well, be drawn through the screen when the well is pumped under maximum conditions of drawdown. Well development shall be accomplished through a combination of swabbing, pumping, and surging. All equipment shall be steaRg cleaned prior to being introduced to the well. ITEM NO. 18 The paragraph under item "G"of"DEVELOPMENT' described in DIVISION Ill, Section 9 - "LEWIS MANOR WATER WELL AND NESTED MONITORING WELL DESIGN AND CONSTRUCTION", shown on page 28 is hereby deleted and amended to read: G. Water Disposal: The Contractor shall dispose of all testing and development water without damage to any property, and in accordance with applicable regulations. The Contractor must provide sand traps for sand control. The development water could be accepted into the existing West Side Irrigation District (WSID) drainage canal via the existing waste pipe, upon approval of WSID, and the payment of an estimated permit fee of$500. The Contractor shall make all of the necessary arrangements with WSID. Development water shall be clear of sand, silt and sediment prior to entering the waste pipe. It will be the Contractor's responsibility to provide whatever means necessary for the creation of a settling basin. ITEM NO. 19 The paragraph under "Destruction of the Corporation Yard Well"described in DIVISION 111, Section 10 - "DESTRUCTION OF THE EXISTING LEWIS MANOR, BALLPARK, AND CORPORATION YARD WELLS", shown on page 35 is hereby amended to read: The existing pump, which is stuck in the casing, shall be removed by the Contractor prior to abandoning the well, and in a manner approved the Department of Water Resources and in conformance with the requirements of Bulletin 74. For bidding purposes, the amount of effort to remove the pump is estimated as one working day. The total well depth is approximately 990 feet with the screened intervals unknown. ITEM NO. 20 The last paragraph under "Demolition of the Corporation Yard Well Pump House"described in DIVISION 111, Section 11 - "DEMOLITION OF THE EXISTING LEWIS MANOR AND CORPORATION YARD PUMP HOUSES", shown on page 37 is hereby amended to read.