27 CA ADC § 20324
27 CCR s 20324
Cal. Admin. Code tit. 27, s 20324
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 2. SITING AND DESIGN
ARTICLE 4. SWRCB - WASTE MANAGEMENT UNIT CONSTRUCTION STANDARDS
This database is current through 04/21/06, Register 2006, No. 16.
s 20324. SWRCB - CQA Requirements. (T14: s17774)
(a) Performance Standard -The construction quality assurance (CQA)
program, including all relevant aspects of construction quality control
(CQC), shall provide evidence that materials and procedures utilized in
the placement of the any containment feature at a waste management unit
(Unit) will be tested and monitored to assure the structure is constructed
in accordance with the design specifications approved by the RWQCB.
(b) Professional Qualifications.
(1) The design professional who prepares the CQA plan shall be a
registered civil engineer or certified engineering geologist; and
(2) The construction quality assurance program shall be supervised by a
registered civil engineer or certified engineering geologist who shall be
designated the CQA officer.
(c) Reports.
(1) The project's CQA report shall address the construction requirements,
including any vegetation procedures, set forth in the design plan for the
containment system. For each specified phase of construction, this report
shall include, but not be limited to:
(A) a delineation of the CQA management organization, including the chain
of command of the CQA inspectors and contractors;
(B) a detailed description of the level of experience and training for the
contractor, the work crew, and CQA inspectors for every major phase of
construction in order to ensure that the installation methods and
procedures required in the containment system design will be properly
implemented.
(C) a description of the CQA testing protocols for preconstruction,
construction, and postconstruction which shall include at a minimum:
1. the frequency of inspections by the operator,
2. the sampling and field testing procedures and equipment to be utilized,
and the calibration of field testing equipment,
3. the frequency of performance audits determined by the design
professional and examined by the CQA officer,
4. the size, method, location and frequency of sampling, sampling
procedures for laboratory testing, the soils or geotechnical laboratory to
be used, the laboratory procedures to be utilized, the calibration of
laboratory equipment and quality assurance and quality control of
laboratory procedures,
5. the pass/fail criteria for sampling and testing methods used to achieve
containment system design, and
6. a description of the corrective procedures in the event of test
failure.
(d) Documentation -Construction quality assurance documentation
requirements shall include, at the minimum: reports bearing unique
identifying sheet numbers for cross-referencing and document control, the
date, project name, location, descriptive remarks, the data sheets,
inspection activities, and signature of the designated authorities with
concurrence of the CQA officer.
(1) The documentation shall include:
(A) Daily Summary Reports -daily recordkeeping, which shall include
preparation of a summary report with supporting inspection data sheets,
problem identification and corrective measures reports. Daily summary
reports shall provide a chronological framework for identifying and
recording all other reports. Inspection data sheets shall contain all
observations (i.e., notes, charts, sketches, or photographs), and a record
of field and/or laboratory tests. Problem identification and corrective
measures reports shall include detailed descriptions of materials and/or
workmanship that do not meet a specified design and shall be
cross-referenced to specific inspection data sheets where the problem was
identified and corrected;
(B) Acceptance Reports -all reports shall be assembled and summarized into
Acceptance Reports in order to verify that the materials and construction
processes comply with the specified design. This report shall include, at
a minimum, inspection summary reports, inspection data sheets, problem
identification and corrective measures reports;
(C) Final Documentation -at the completion of the project, the operator
shall prepare a Final Documentation which contains all reports submitted
concerning the placement of the containment system. This document shall
provide evidence that the CQA plan was implemented as proposed and that
the construction proceeded in accordance with design criteria, plans, and
specifications. The discharger shall submit copies of the Final
Documentation report to the RWQCB as prepared by the CQA officer.
(2) Once construction is complete, the document originals shall be stored
by the discharger in a manner that will allow for easy access while still
protecting them from any damage. All documentation shall be maintained
throughout the postclosure maintenance period.
(e) Laboratory Testing Requirements. [Note: the following (ASTM) standards
are available from the American Society of Testing and Materials (ASTM),
100 Barr Harbor Drive, West Conshohocken, PA 19428-2929, phone:
610-832-9585 ]
(1) Analysis of earthen materials shall be performed prior to their
incorporation into any containment system component. Representative
samples for each layer within the containment system shall be evaluated.
The following minimum laboratory testing procedures shall be performed:
(A) ASTM Designation: D 1557-91 [1/91], "Laboratory Compaction
Characteristics of Soil Using Modified Effort (2,700 kN-m/m3)" which is
incorporated by reference;
(B) ASTM Designation: D 422-63 (Reapproved) [9/90], "Standard Method for
Particle-Size Analysis of Soils," which is incorporated by reference; and
(C) ASTM Designation: D 2487-93 [11/93], "Standard Classification of Soils
for Engineering Purposes," which is incorporated by reference.
(2) In addition to the tests listed in ¶(e and f), the following minimum
laboratory tests shall be performed on low-hydraulic-conductivity layer
components constructed from soil:
(A) ASTM Designation: D 4318-93 [11/93], "Standard Test Method for Liquid
Limit, Plastic Limit, and Plasticity Index of Soils," which is
incorporated by reference; and
(B) United States Environmental Protection Agency (USEPA) Test Method 9100
[Approved 9-86], "Triaxial-Cell Method with Back Pressure," which is
incorporated by reference.
(f) Field Testing Requirements -The following minimum field test procedure
shall be performed for each layer in the containment system: ASTM
Designation: D 2488-93 [9/93], Standard Practice for Description and
Identification of Soils (Visual-Manual Procedure), which is incorporated
by reference.
(g) Test Fill Pad Requirements -Before installing the compacted soil
barrier layer component of a final cover system, or the compacted soil
component of a liner system, the operator shall accurately establish the
correlation between the design hydraulic conductivity and the density at
which that conductivity is achieved. To accomplish this the operator
shall:
(1) provide a representative area for a test on any compacted foundation
and low-hydraulic- conductivity layers. The following minimum testing
procedures shall be performed:
(A) the test pad foundation and, for final covers, the barrier layers
shall be compacted with the designated equipment to determine if the
specified density/moisture-content/hydraulic- conductivity relationships
determined in the laboratory can be achieved in the field with the
compaction equipment to be used and at the specified lift thickness;
(2) perform laboratory tests as specified in subsection (e); and
(3) perform field tests as specified in subsection (f). The discharger
shall perform hydraulic conductivity tests in the test area under
saturated conditions by using the standard test method ASTM Designation: D
3385-94 [9/94], "Standard Test Method for Infiltration Rate of Soils in
Field Using Double-Ring Infiltrometer," which is incorporated by
reference, for vertical hydraulic conductivity measurements. A sufficient
number of tests shall be run to verify the results. Other methods that
provide an accurate and precise method of measuring field hydraulic
conductivity may be utilized as approved by the RWQCB.
(4) Correlations between laboratory tests and test pad results shall be
established for each of the various types of fill materials and blends to
be used in construction of the actual cover.
(h) Earthen Material Requirements.
(1) The following minimum tests shall include, but not be limited to:
(A) Laboratory tests as specified in ¶(e); and
(B) Field tests as specified in subsections (f and g).
(2) The following minimum testing frequencies shall be performed:
(A) Four (4) field density tests shall be performed for each 1,000 cubic
yards of material placed, or at a minimum of four (4) tests per day;
(B) Compaction curve data (ASTM Designation: D 1557-91) graphically
represented, and Atterberg limits (ASTM Designation: D 4318-93) shall be
performed on the barrier layer material once a week and/or every 5,000
cubic yards of material placed;
(C) For field hydraulic conductivity tests, representative samples shall
be performed on barrier layer material;
1. The frequency of testing may be increased or decreased, based on the
pass/failure status of previous tests, as approved by the RWQCB.
2. Field infiltration tests shall be performed for the duration necessary
to achieve steady conditions for the design hydraulic conductivity.
3. The following interpretive equation shall be used to determine the
design hydraulic conductivity:
The infiltration rate (1) is defined as:
I = Q/(tA)
where Q = volume of flow; t = interval of time corresponding to flow Q;
and A = area of the ring;
then the hydraulic conductivity (k) can be calculated from Darcy's law as
follows:
k = I/i
where: I = infiltration rate; and i = hydraulic gradient.
(i) Geosynthetic Membrane Requirements.
(1) Performance requirements for the geosynthetic membrane include, but
are not limited to, the following:
(A) a need to limit infiltration of water, to the greatest extent
possible;
(B) a need to control landfill gas emissions;
(C) for final covers, mechanical compatibility with stresses caused by
equipment traffic, and the result of differential settlement of the waste
over time; and
(D) for final covers, durability throughout the postclosure maintenance
period.
(2) Minimum Criteria -The minimum construction quality assurance criteria
to ensure that geosynthetic membranes will meet or exceed all design
specifications shall include, but not be limited to:
(A) Preconstruction quality control program:
1. inspection of the raw materials (e.g., density, melt flow index,
percent carbon Black);
2. manufacturing operations and finished product specifications (e.g.,
thickness, puncture resistance, multi-axial stress/strain tests),
3. fabrication operations (e.g., factory seaming);
4. observations related to transportation, handling, and storage of the
geosynthetic membrane; and
5. inspection of foundation preparation;
(B) Construction activities:
1. the geosynthetic membrane shall have thickness strength sufficient to
withstand the stresses to which it shall be subjected, including shear
forces, puncture from rocks or, for final covers, penetration from roots.
2. inspection of geosynthetic membrane placement (e.g., trench corners,
monitoring systems).
3. seaming of the material; and
4. installation of anchors and seals;
(C) Postconstruction Activity -postconstruction activity includes checking
for material and placement imperfections in the installed geosynthetic
membrane. Imperfections that jeopardize the integrity of the membrane's
function as an impermeable barrier (i.e., pin holes, rips, creases created
during placement) shall be repaired to the original manufacturer's
specifications and reinspected by the CQA officer; and
(D) Evaluation -evaluation of the personnel and equipment to be used to
install and inspect the geosynthetic membrane, and pass/fail criteria and
corrective procedures for material and installation procedures shall be
specified as required in ¶(c).
Note: Authority cited: Section 1058, Water Code. Reference: Sections 13172
and 13360, Water Code; and Section 43103, Public Resources Code.
HISTORY
1. New section filed 6-18-97; operative 7-18-97 (Register 97, No. 25).
27 CA ADC s 20324
END OF DOCUMENT
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