Current through August 26, 2024
An applicant for a proposed facility for all its monitoring
wells and the owner or operator of an existing facility for its designated
Subtitle D wells shall establish baseline groundwater quality in accordance
with subs. (1) to (3). Owners or operators shall establish baseline groundwater
quality at all new or replacement groundwater monitoring wells in accordance
with sub. (4). The department may require the owners or operators of other
facilities at which monitoring is required to establish baseline groundwater
quality in accordance with sub. (4). Collection, handling and analysis of
groundwater monitoring samples specified in subs. (1) to (4) shall be performed
in accordance with ss. NR 507.16 and 507.17.
(1) BASELINE GROUNDWATER QUALITY FOR
DETECTION MONITORING PARAMETERS EXCEPT VOCS.
(a) Baseline groundwater quality shall be
established at all wells that were installed outside the proposed limits of
filling to evaluate the proposed facility. Samples shall be analyzed for each
detection monitoring parameter as appropriate for the particular waste types
accepted at the landfill. Chapter NR 507 Appendix I, Tables 1, 1A, and 2
indicate which parameters shall be analyzed for each waste type. The department
may require additional parameters based on the waste types and waste
characteristics accepted at the landfill.
(b) The owner or operator shall obtain and
analyze a minimum of 8 samples to determine baseline groundwater quality for
the parameters required under this subsection. For a proposed facility, a
minimum of 4 samples, with at least 30 days between sampling rounds, shall be
taken and analyzed and the results shall be submitted with the feasibility
report. The remaining samples shall be taken with at least 30 days between
sampling rounds and the results shall be submitted with the plan of operation
unless otherwise approved in writing by the department.
(2) BASELINE GROUNDWATER QUALITY FOR PUBLIC
HEALTH AND WELFARE PARAMETERS NOT INCLUDED AS DETECTION MONITORING PARAMETERS
IN SUB. (1).
(a) Unless otherwise specified
by the department, baseline groundwater quality shall be established at all
wells outside the proposed limits of filling which were installed to evaluate
the proposed facility. Baseline water quality for these wells shall be
established for the public health and welfare groundwater quality standards
listed in ch. NR 507 Appendix I, Table 3.
(b) For a proposed facility, a minimum of 4
samples, with at least 30 days between sampling rounds, shall be collected and
analyzed and the results shall be submitted with the feasibility report. Four
additional samples, with at least 30 days between sampling rounds, shall be
collected and analyzed for any parameter listed in ch. NR 507 Appendix I, Table
3 from any well which meets one or more of the following criteria:
1. One of the initial 4 sample values attains
or exceeds the ES for that parameter.
2. Two or more of the initial 4 sample values
attains or exceeds the PAL for that parameter.
3. The average of the initial 4 sample values
attains or exceeds the PAL for that parameter.
(c) If additional samples are required under
par. (b), the results of the 4 additional samples shall be submitted in the
plan of operation and in accordance with s. NR 507.26 (3).
(3) BASELINE GROUNDWATER QUALITY FOR VOCS.
(a) Baseline groundwater quality shall be
established for all VOCs listed in ch. NR 507 Appendix III, at all monitoring
wells outside the proposed limits of filling. Landfills designed to accept CCR
and CCR landfills are exempt from baseline groundwater quality monitoring for
VOCs.
(b) Samples shall be
collected for VOC analysis from each well at the same time as the first and
second sampling rounds for the other detection monitoring parameters. If any
well has VOC parameters in concentrations above their limit of detection in
either of the first 2 sampling rounds, that well shall be sampled for VOCs 2
additional times for a total of 4 sampling rounds. The results shall be
submitted with the feasibility report and in accordance with s. NR 507.26(3).
(4) BASELINE
GROUNDWATER QUALITY AT NEW OR REPLACEMENT MONITORING WELLS. All new or
replacement groundwater monitoring wells installed after July 1, 1996, shall be
sampled on a semi-annual basis beginning with the sampling event following
installation for the parameters specified in subs. (1) to (3) to establish
baseline groundwater quality. The results shall be submitted in accordance with
s. NR 507.26 (3). The department may waive the requirement to establish
baseline groundwater quality monitoring for a replacement well which is
established in the same environment and proximity as the well being replaced.
(5) BASELINE GROUNDWATER QUALITY
SAMPLING AT CCR WELLS.
(a) Baseline
groundwater quality shall be established by the owner or operator of a CCR
landfill at all CCR wells installed outside the proposed limits of filling to
evaluate groundwater quality in the uppermost aquifer beneath the CCR landfill
as provided in par. (b). Samples shall be analyzed for each monitoring
parameter as indicated under ch. NR 507 Appendix I, Tables 1A and 3 for
detection and baseline monitoring for CCR wells.
(b) The owner or operator of a CCR landfill
shall obtain, analyze, and submit the results from a minimum of 8 groundwater
quality samples from each CCR well to the department to determine baseline
groundwater quality for the parameters required under this subsection. The
information shall be submitted as part of the plan of operation modification
required under s. NR 514.045 or the feasibility report for a proposed
landfill.
(c) The department may
not approve a CCR landfill at a location where a preventive action limit or
enforcement standard adopted under s. NR 140.10 or 140.12 has been attained or
exceeded in the baseline monitoring sampling results unless the department
grants an exemption to those standards in accordance with s. NR 140.28 as part
of a CCR landfill feasibility determination, plan of operation approval, or
plan of operation modification approval under s. NR 514.045.
(d) A preventive action limit for lithium
shall be established by the department at each CCR well in accordance with s.
NR 140.20 (2) (c) set at the background water quality plus 3 standard
deviations.
