In addition to the general information specified in s.
NR 516.04(3)
(d) reports documenting the construction of
all new landfill areas shall contain the following minimum information:
(1) ENGINEERING PLANS. A set of 24 inch by 36
inch engineering plan sheets, or alternative size if approved by the department
in writing, shall be prepared in accordance with s.
NR 500.05 and contain:
(a) A plan view documenting the constructed
grades for the sub-base, sidewalls, leachate collection trench undercuts and
all sub-base appurtenances such as lysimeters and drain pipes, prior to liner
placement. Documentation of the grades shall consist of spot elevations taken
on a maximum 50-foot grid pattern, with leachate collection trench undercut
elevations at least every 25 linear feet. If a total station or laser equipment
is used to set elevations, the elevations may be taken every 50 linear feet.
The approved sub-base grades shall also be shown for the same area in a clear
and legible manner.
(b) Plan view
drawings showing the locations of all the various soil and geomembrane testing
performed. Each test location shall be clearly labeled with appropriate
identification codes. The plan view drawings shall clearly show any areas where
removal and recompaction of clay was necessary in order to attain the minimum
required specifications. For composite-lined and composite-capped landfills, a
plan view drawing shall also clearly show geomembrane panel placement,
geomembrane patches and seam repairs, and geomembrane destructive sample
locations. Multiple plan views may be shown on a single plan sheet if
legibility is not compromised.
(c)
A plan sheet documenting the constructed elevations for the liner system. This
plan sheet shall contain spot elevations of the base, sidewalls and leachate
collection trenches. Documentation of grades shall include spot elevations
taken on a maximum 50-foot grid pattern, with leachate collection trench
elevations taken every 25 linear feet. If a total station or laser equipment is
used to set elevations, the leachate collection trench elevations may be taken
every 50 linear feet. The approved base grades shall be shown for the same area
in a clear and legible manner.
(d)
A plan view drawing showing the constructed base grades as well as the
locations and elevations of all leachate collection and transfer piping,
manholes, lift stations, culverts, berms and the location of all unsaturated
zone, groundwater, gas, leachate monitoring and cleanout devices, surface
drainage features and other pertinent structures. This information may be shown
on the plan sheet required in par. (c) if legibility is not
compromised.
(e) Cross-sections
through the constructed area parallel and perpendicular to the base line of the
facility. A minimum of 4 cross-sections shall be prepared, 2 of which shall be
in each direction. Additional cross-sections shall be prepared as necessary to
add clarification. Each of the cross-sections shall show actual and design
sub-base and base grade contours, the top of the granular drainage blanket,
leachate and groundwater pipe elevations and the actual base and sub-base
contours of adjacent filled areas. The design sub-base and base grade contours
do not need to be shown if there is not an observable variation from the design
grades.
(f) Detail drawings, both
plan view and cross-sections, of all manholes, lift stations, storage tanks,
sumps and sideslope risers or locations where leachate transfer piping exits
the lined area and the secondary containment of these features as well as leak
detection monitoring points and other pertinent construction details. At a
minimum, these drawings shall show base and top elevations, the invert
elevations of all associated piping, pump details, float level elevations and
the extent of recompacted clay placed around and below the structures. If float
elevations are not available at the time of submittal of the construction
documentation report, they shall be provided to the department when they are
available.
(g) Cross-section
details shall be included to illustrate all important construction features of
the liner, lysimeters, leachate collection trenches and sumps, and sediment
control and storm water management systems.
(h) Detail drawings shall be included for
leachate header lines or drain lines located outside the limits of waste in
critical areas of below-ground piping such as where several pipes cross or meet
to illustrate sufficient pipe location and invert information.
(i) Additional plan sheets, patterned after
those specified in pars.(a) to (h), shall be included for those facilities
designed with multiple liners, groundwater gradient control systems or other
nonstandard design features.
(2) REPORT PREPARATION. A comprehensive
report containing a detailed narrative describing the construction of the area
in a logical fashion shall be prepared. Particular emphasis shall be given to
any deviations from the approved plan of operation and to the explicit
construction methods used for all locations where leachate transfer piping
exits the lined waste fill area. This report shall include the following
information at a minimum:
(a) An analysis and
discussion of all soil and geomembrane testing work performed. All density and
moisture content testing results shall clearly indicate which Proctor curve or
line of optimums is applicable to the soil being compacted. Any changes in the
referenced Proctor curve or line of optimums shall be identified as to when
they occurred and why the change was made. All raw data from the soil and
geomembrane testing performed shall be included in an appendix to the
construction documentation report unless other arrangements were previously
approved by the department. The raw data shall be summarized using a tabulated
format. Also included shall be the make, model, weight and foot length of each
piece of equipment used to compact clay.
(b) A table containing thicknesses of each
layer in the liner system on a 100-foot grid pattern.
(c) Discussion of how the leak tests were
performed on lysimeters and sideslope riser sumps and a discussion of any
problems encountered and how they were resolved.
(d) Documentation of the initial leachate
collection pipe cleanout, and pressure testing of force mains and leachate
storage tanks. All provisions used to seal pipe connections, manhole sections
and leachate storage tanks including protective coatings and corrosion
protection shall be described. The manufacturer's recommendations for the
installation of all equipment shall be included. Any deviations from the
recommendations shall be discussed.
(e) Daily summary reports prepared by the
registered professional engineer or qualified technician performing continuous
quality assurance for each day that installation of geomembrane or other
geosynthetics is either attempted or accomplished when constructing
composite-lined sites. The reports shall specifically describe practices
employed for base grade preparation and acceptance before geomembrane
installation and drainage layer placement, and the following:
1. Identification and location of geomembrane
panels placed, with modifications of the fabrication plan noted.
2. Identification of field seams and ends of
panels, and results of all destructive and nondestructive field tests of test
seams and installed seams.
3.
Methods and procedural steps taken prior to field seaming of panels.
4. Identification of wrinkles that were large
enough to double over and were cut out and repaired.
5. Identification of repairs and destructive
samples and the results of the nondestructive testing of those
repairs.
6. Amount and location of
geotextile and other geosynthetics used in construction of the liner.
7. Identification of the sources and product
information for manufactured items used in site construction including
geosynthetics. This shall include the identification of all solvents and other
sealants used in pipe construction.
8. Weather conditions and
constraints.
(f) A
series of properly labeled 35 millimeter color prints or prints from digital
photographs documenting all major aspects of facility construction. This shall
include close-up photographs of the construction process including clay liner
and soil barrier layer placement and compaction equipment, deployment of
geomembrane and all other geosynthetics, deployment equipment, leachate pipe
placement including all places where transfer piping exits the lined waste fill
area or sideslope riser installation, drainage blanket placement and the
installation of all manholes, sumps, sideslope risers, lift stations and
storage tanks. Panoramic views shall be included showing the prepared sub-base
and the completed liner before and after granular blanket placement.