Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 610 - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM (VPDES) PERMIT REGULATION › Part III - Permit Application and Issuance › Section 9VAC25-610-140 - Establishing applicable standards, limitations or other permit conditions

Current through Register Vol. 40, No. 24, July 15, 2024
A. In addition
				  to the conditions established in
				  9VAC25-610-100,
				  9VAC25-610-110,
				  9VAC25-610-120,
				  and
				  9VAC25-610-130,
				  each permit shall include conditions with the following requirements:
1. A permit shall contain the total depth of
				  each permitted well in feet;
2. A
				  permit shall specify the screened intervals of wells authorized for use by the
				  permit;
3. A permit shall contain
				  the designation of the aquifers to be utilized;
4. A permit shall contain conditions limiting
				  the withdrawal amount of a single well or a group of wells that comprise a
				  withdrawal system to a quantity specified by the department. A permit shall
				  contain a maximum annual withdrawal and a maximum monthly groundwater
				  withdrawal limit;
5. A groundwater
				  withdrawal permit for a public water supply shall contain a condition allowing
				  daily withdrawals at a level consistent with the requirements and conditions
				  contained in the waterworks operation permit, or equivalent, issued by the
				  Virginia Department of Health. This requirement shall not limit the authority
				  of the department to reduce or eliminate groundwater withdrawals by public
				  water suppliers if necessary to protect human health or the
				  environment;
6. The permit shall
				  state that no pumps or water intake devices are to be placed lower than the top
				  of the uppermost confined aquifer that a well utilizes as a groundwater source
				  or lower than the bottom of an unconfined aquifer that a well utilizes as a
				  groundwater source in order to prevent dewatering of a confined aquifer, loss
				  of inelastic storage, or damage to the aquifer from compaction.
7. All permits shall specify monitoring
				  requirements as conditions of the permit.
a.
				  Permitted users who are issued groundwater withdrawal permits based on
				  9VAC25-610-110
				  B 3 and C 2 shall install either in-line totalizing flow meters or hour meters
				  that record the hours of operation of withdrawal pumps on each permitted well
				  prior to beginning the permitted use. Flow meters shall produce volume
				  determinations within plus or minus 10% of actual flows. Hour meters shall
				  produce run times within plus or minus 10% of actual run times. Hour meter
				  readings will be multiplied by the maximum capacity of the withdrawal pump to
				  determine withdrawal amounts. A defective meter or other device must be
				  repaired or replaced within 30 days. A defective meter is not grounds for not
				  reporting withdrawals. During any period when a meter is defective, generally
				  accepted engineering methods shall be used to estimate withdrawals and the
				  period during which the meter was defective must be clearly identified in
				  groundwater withdrawal reports. An alternative method for determining flow may
				  be approved by the department on a case-by-case basis.
b. Permitted users who are issued groundwater
				  withdrawal permits based on any section of this chapter not included in
				  subdivision 7 a of this subsection shall install in-line totalizing flow meters
				  to read gallons, cubic feet, or cubic meters on each permitted well prior to
				  beginning the permitted use. Such meters shall produce volume determinations
				  within plus or minus 10% of actual flows. A defective meter or other device
				  must be repaired or replaced within 30 days. A defective meter is not grounds
				  for not reporting withdrawals. During any period when a meter is defective,
				  generally accepted engineering methods shall be used to estimate withdrawals
				  and the period during which the meter was defective must be clearly identified
				  in groundwater withdrawal reports. An alternative method for determining flow
				  may be approved by the department on a case-by-case basis.
c. Permits shall contain requirements
				  concerning the proper use, maintenance and installation, when appropriate, of
				  monitoring equipment or methods when required as a condition of the
				  permit.
d. Permits shall contain
				  required monitoring including type, intervals, and frequency sufficient to
				  yield data which are representative of the monitored activity and including,
				  when appropriate, continuous monitoring and sampling.
e. Each permitted well shall be equipped in a
				  manner such that water levels can be measured during pumping and nonpumping
				  periods without dismantling any equipment. Any opening for tape measurement of
				  water levels shall have an inside diameter of at least 0.5 inches and be sealed
				  by a removable plug or cap. The permittee shall provide a tap for taking raw
				  water samples from each permitted well.
8. All permits shall prohibit withdrawals
				  from wells not authorized in the permit.
9. All permits shall include requirements to
				  report the amount of water withdrawn from each permitted well and well system
				  on forms provided by the department with a frequency dependent on the nature
				  and effect of the withdrawal, but in no case less than once per year.
10. Groundwater withdrawal permits issued
				  under this chapter shall have an effective and expiration date which will
				  determine the life of the permit. Groundwater withdrawal permits shall be
				  effective for a fixed term not to exceed 15 years. Permit duration of less than
				  the maximum period of time may be recommended in areas where hydrologic
				  conditions are changing or are not adequately known. The term of any permit
				  shall not be extended by modification beyond the maximum duration. Extension of
				  permits for the same activity beyond the maximum duration specified in the
				  original permit will require reapplication and issuance of a new
				  permit.
11. Each permit shall have
				  a condition allowing the reopening of the permit for the purpose of modifying
				  the conditions of the permit to meet new regulatory standards duly adopted by
				  the board.
12. Each well that is
				  included in a groundwater withdrawal permit shall have affixed to the well
				  casing, in a prominent place, a permanent well identification plate that
				  records the Department of Environmental Quality well identification number, the
				  groundwater withdrawal permit number, the total depth of the well and the
				  screened intervals in the well, at a minimum. Such well identification plates
				  shall be in a format specified by the department and are available from the
				  Department of Environmental Quality.