Laserfiche WebLink
E <br />G. Contractor shall allow the Engineer to install hydrology meter during well <br />development. <br />H. Contractor shall develop well using mechanical surging or over pumping or a <br />combination thereof per ASTM D 5521. Contractor shall purge the well until: <br />1. Well water is clear to the unaided eye. <br />2. Sediment in the well casing is less than 0.1 foot thick. <br />3. Water removed during surging and purging shall be a minimum of three times the <br />water volume in the well prior to the start of purging plus three times the volume <br />of water added for purging and surging. <br />4. Temperature is consistent within 0.2 deg F, <br />5. Specific conductivity is consistent within + 3 percent change in specific <br />conductance. <br />6. pH varies less than 0.2 pH units <br />7. Turbidity varies not more than 10% <br />3.04 WELL DEVELOPMENT RECORDS <br />A. Contractor shall submit to the Engineer in the writing the following well <br />development data for each well development. Submittal shall be made within two <br />business days of completing well development. Engineer may request any other <br />data in the field. <br />1. Name of project, site, well identification number, date and time of development <br />and name of person developing the well. <br />2. Method used for development, to include size, type and make of equipment, <br />bailer, and/or pump used during development. <br />3. Depth to bottom of well pre and post development <br />4. Static water level before and after well development <br />5. Time spent developing the well by each method, to include typical pumping rate, <br />if pump is used in development. <br />6. Minimum purge volume <br />7. Amount of water purged. Provide physical character of water removed, to <br />include changes during development in clarity, color, particulates, and odor. <br />8. Volume and source of water added to the well, if any. <br />9. Volume and physical character of sediment removed, to include changes during <br />development in color orodor. <br />NC -Groundwater Monitoring <br />Well Specifications 12/08/17 Page 9 of 13 San Joaquin County Public Works Dept <br />Solid Waste Division <br />