California Code of Regulations › Title 27 - Environmental Protection › Division 2 - Solid Waste › Subdivision 1 - Consolidated Regulations for Treatment, Storage, Processing or Disposal of Solid Waste › Chapter 3 - Criteria for All Waste Management Units, Facilities, and Disposal Sites › Subchapter 3 - Water Monitoring › Article 1 - SWRCB-Water Quality Monitoring and Response Programs for Solid Waste Management Units › Section 20415 - SWRCB-General Water Quality Monitoring and System Requirements. [C15: Section 2550.7 // T15: Section 17783.5(d)]

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The
						discharger shall comply with the requirements of this section for any water
						quality monitoring program developed to satisfy §
												20420, §
												20425, or §
												20430 of this article.
(b) Ground Water Monitoring System.
(1) General--Except as provided under
						¶(e)(3), the discharger shall establish a ground water monitoring system
						for each Unit. This ground water monitoring system shall include:
(A) For All Programs--for all monitoring and
						response programs, a sufficient number of Background Monitoring Points (as
						defined in §
														20164) installed at appropriate
						locations and depths to yield ground water samples from the uppermost aquifer
						that represent the quality of ground water that has not been affected by a
						release from the Unit;
(B) For
						DMP--for a detection monitoring program under §
														20420:
1. a sufficient number of Monitoring Points
						(as defined in §
															20164) installed at appropriate
						locations and depths to yield ground water samples from the uppermost aquifer
						that represent the quality of ground water passing the Point of Compliance and
						to allow for the detection of a release from the Unit;
2. a sufficient number of Monitoring Points
						installed at additional locations and depths to yield ground water samples from
						the uppermost aquifer to provide the best assurance of the earliest possible
						detection of a release from the Unit;
3. a sufficient number of Monitoring Points
						and Background Monitoring Points installed at appropriate locations and depths
						to yield ground water samples from portions of the zone of saturation,
						including other aquifers, not monitored pursuant to ¶(b)(1)(B)1. and
						¶(b)(1)(B)2., to provide the best assurance of the earliest possible
						detection of a release from the Unit;
4. a sufficient number of Monitoring Points
						and Background Monitoring Points installed at appropriate locations and depths
						to yield ground water samples from zones of perched water to provide the best
						assurance of the earliest possible detection of a release from the Unit;
						and
5. Monitoring Point locations
						and depths that include the zone(s) of highest hydraulic conductivity in each
						ground water body monitored pursuant to this subsection [i.e., under ¶(b),
						inclusive].
(C) For
						EMP--for an evaluation monitoring program under §
														20425:
1. a sufficient number of Monitoring Points
						installed at appropriate locations and depths to yield ground water samples
						from the uppermost aquifer that represent the quality of ground water passing
						the Point of Compliance and at other locations in the uppermost aquifer to
						provide the data needed to evaluate changes in water quality due to the release
						from the Unit;
2. a sufficient
						number of Monitoring Points and Background Monitoring Points installed at
						appropriate locations and depths to yield ground water samples from portions of
						the zone of saturation, including other aquifers, not monitored pursuant to
						¶(b)(1)(C)1., to provide the data needed to evaluate changes in water
						quality due to the release from the Unit; and
3. a sufficient number of Monitoring Points
						and Background Monitoring Points installed at appropriate locations and depths
						to yield ground water samples from zones of perched water to provide the data
						needed to evaluate changes in water quality due to the release from the Unit;
						and
(D) For CAP--for a
						corrective action program under §
														20430:
1. a sufficient number of Monitoring Points
						installed at appropriate locations and depths to yield ground water samples
						from the uppermost aquifer that represent the quality of ground water passing
						the Point of Compliance and at other locations in the uppermost aquifer to
						provide the data needed to evaluate the effectiveness of the corrective action
						program;
2. a sufficient number of
						Monitoring Points and Background Monitoring Points installed at appropriate
						locations and depths to yield ground water samples from portions of the zone of
						saturation, including other aquifers, not monitored pursuant to
						¶(b)(1)(D)1., to provide the data needed to evaluate the effectiveness of
						the corrective action program; and
3. a sufficient number of Monitoring Points
						and Background Monitoring Points installed at appropriate locations and depths
						to yield ground water samples from zones of perched water to provide the data
						needed to evaluate the effectiveness of the corrective action
						program.