§ 20324. SWRCB--CQA Requirements. (T14: § 17774)
27 CA ADC § 20324Barclays Official California Code of Regulations
Barclays California Code of Regulations
Title 27. Environmental Protection
Division 2. Solid Waste (Refs & Annos)
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
27 CCR § 20324
§ 20324. SWRCB--CQA Requirements. (T14: § 17774)
(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.
(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.
(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.
(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:
(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;
(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.
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. |
(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
Credits
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).
This database is current through 4/26/24 Register 2024, No. 17.
Cal. Admin. Code tit. 27, § 20324, 27 CA ADC § 20324
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