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[v] The observation wells and test well must have a geologic log describing the depth and types of soils and rocks encountered and the depth and approximate yields of water-bearing fracture zones. The observation wells should be completed to a similar depth as the test well.
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[vi] The design of the aquifer test shall be developed using the applicable guidance from "Guidelines for Preparing Hydrogeologic Reports for Water Allocation Permit Application with an Appendix on Aquifer - Test analysis Procedures" NJGS GSR 29 (1992 or most recent edition) or successor document. The aquifer test shall be conducted according to the following procedure:
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[A] Owners of existing wells on lots located within 500 feet of the property boundary shall be given an opportunity to have their wells monitored during the aquifer test. Such opportunity shall be given by the applicant by notice via certified mail and shall give the time and place of the aquifer test. A letter acceptable to Clinton Township is included in Appendix A. The notice shall indicate that such existing well may be monitored if agreed to by the well owner provided the well is readily accessible. Such notice shall indicate that the existing well owner must respond within seven days and the applicant's responsibility is to monitor up to three wells on properties within 500 feet of the property boundaries. If the owner of the lot within 500 feet of the property boundaries decides to participate by agreeing to have their existing well monitored, they shall notify the applicant' by certified mail. Such response shall be provided within seven days of receipt of the certified notice from the applicant. If the applicant receives no response within the time provided, the response shall be deemed to be negative. | |||||||
[B] All reasonable efforts shall be made to protect the potability of water from the monitored well. | |||||||
[C] In the case when more than three property owners within 500 feet of the property boundaries decide to participate and to have their existing wells monitored, only three nearest to the test well need be monitored. However, if any of the property owners requesting monitoring have wells completed to a depth less than 100 feet, these wells must also be monitored in addition to the three nearest wells. A map depicting the location of all wells to be monitored and a list of all property owners within 500 feet of the property boundary that requested monitoring is to be submitted to the Board for review and approval prior to implementing the aquifer test. | |||||||
[D] Prior to conducting an aquifer test, the applicant shall submit the design of such aquifer test including the location of wells to be monitored on adjacent lots and qualifications of the persons and firm who will be performing the test for review by the Board. Such review may include submission of such design to a qualified hydrogeologist representing the Board for review and recommendations. The Board may consider the comments and recommendations of the Board's Hydrogeologist prior to approving the aquifer test plan. A fracture trace analysis showing the location and orientation of fractures beneath the site must be included with the aquifer test plan. This same analysis with additional information regarding septic system locations must be included in the final report. This fracture trace analysis should be used to identify all observation wells, which should be located along strike of the primary geologic fractures/structures on and near the property. | |||||||
[E] The aquifer test will be conducted in three phases. The first phase will involve the collection of background water levels prior to the start of the test. The second phase will involve the pumping of water from the well and the monitoring of water-level drawdown in the observation and pumping wells. The third phase will involve the recovery of water levels in the observation and pumping wells after the pump has been shutdown. This third phase of the test should at a minimum, be the same length as the pumping phase. | |||||||
[F] The aquifer test (all three phases) shall not be conducted during a precipitation event or events in which total precipitation exceeds 0.5-inches. If precipitation occurs during the test, the applicant should provide precipitation amounts and sufficient data to show that the precipitation did not recharge the aquifer during the test and adversely impact the testing results. If precipitation amounts exceeding 0.5-inches are recorded, the test must be repeated. | |||||||
[G] The background phase includes allowing the test well and observation wells to stabilize for a minimum of three days before the test. At a minimum, water levels should be measured each hour from the test well and observation wells for a twenty-four-hour period prior to the start of pumping. It is the applicant's responsibility to collect sufficient data to determine background conditions and to ensure that antecedent influences can be fully characterized. Barometer measurements and additional water-level measurements can be made by the applicant to evaluate the change in water levels resulting from barometric pressure changes and/or influences from off-site pumping. | |||||||
[H] On the day of the pumping phase, water levels shall be collected from all wells. For those wells showing a change of more than 0.1 foot, a second round of measurements shall be collected before starting the test. Additional rounds of measurements may be necessary to determine that the well is in equilibrium. However, if the applicant has barometric pressure and water-level data to indicate that the change in static levels is due to changes in barometric pressure and/or antecedent influences, the applicant can submit these data in lieu of delaying the pumping phase. | |||||||
[I] The pump and discharge pipe shall be equipped with an orifice/manometer apparatus and calibrated flow meter to instantaneously measure flow rate and determine total volume pumped from the well. The discharge shall be directed so that it leaves the site without infiltrating to the aquifer. Any and all permits required by the NJDEP for the discharge of water must be obtained prior to starting the test. | |||||||
[J] When the pump is started the flow rate shall be adjusted immediately to a uniform pumping rate as required for a constant rate test and in accordance with the approved aquifer test plan. The flow rate shall not vary more than 10% throughout the test. If the flow rate fluctuates more than 10%, the test may be deemed invalid and the applicant required to repeat the notification and testing process. | |||||||