Laserfiche WebLink
<br />COMMENTS FROM SCOTT G. MEFFORD <br />Ground Water Systems <br />1. [Partial) It is unclear from the text if the existing well M-9 is to be pump tested. <br />RESPONSE: As stated in JCHA's submittal for TR-Q8, "pump tests will be conducted at each <br />of three well sites (M-9 and the two new sites) to determine aquifer hydraulic <br />characteristics for input to a ground water model to evaluate what well <br />configuration and pumping rates will be necessary to control the ground water <br />gradient". BMR believes that it was clear in TR-O8 that well M-9 would be <br />pump tested. <br />As confirmed in the second phase submittal for TR-08, a pUrnp test was <br />conducted at M-9, and the results were reported in the August 6, Ig92 submittal. <br />2. [PanialJ [TJhere is no infomration in the documents m suggest tvlrat pumping <br />rates are being anticipated for the tests, or how long the tests are ar be <br />conducted. Short tern[ "step tests" conducted on dre wells prior to inirialion of <br />the continuous discharge test would be helpfid in defining these parameters. Ir: <br />any event, tests should be of adequate duration and conducted at ndequnte <br />discharges to allow a reasonable interpretation of aquifer pennrabiliry to be <br />developed within the full area benveerr the t/iree tivclls, arrrl to define arry <br />boundary conditions which may exist. The tests should also b¢ of adequate <br />duration to overcome arry delayed yield effects which pray occur in the aquifer. <br />RESPONSE: As described in the August 6, 1992 second phase submittal for TR-08, during the <br />development of each of the wells water level data were obtained tU evaluate the <br />best long-term pumping rate. While not a step test, it did provide Sufficient data <br />to allow evaluation of the appropriate pumping rate. <br />As described in JCHA's first phase submittal for TR-08, it was proposed that the <br />two wells not being pumped during each pump test would be used as observation <br />wells to develop additional aquifer characteristics (storage coefficient). However, <br />due to the low production rates and strict time schedule for response to the <br />CDMG, observation wells were not used during these pump tests. AMR believes <br />that these tests have provided representative aquifer Hydraulic characteristics and <br />that, because of the low permeability of the Santa Fe aquifer, steady-state <br />conditions will be achieved rapidly, making the value of the storage coefficient <br />a moot point. <br />-4- <br />