California Department of Resources Recycling and Recovery (CalRecycle) 

Regulations: Title 27, Environmental Protection--Division 2, Solid Waste

Chapter 4. Documentation and Reporting For Regulatory Tiers, Permits, WDRs, and Plans

Subchapter 3. Development of Waste Discharge Requirements (WDRs) and Solid Waste Facility Permits

Article 4. SWRCB - Development of Waste Discharge Requirements (WDRs)

Section 21710. SWRCB - Report Of Waste Discharge (ROWD) and Other Reporting Requirements. [C15: Section 2590]

(a) General — Any person discharging or proposing to discharge solid waste to land where water quality could be affected as a result of such discharge shall submit to the RWQCB a report of waste discharge (ROWD), unless the report is waived by the RWQCB; nevertheless, the RWQCB shall not waive the report for any MSW landfill subject to regulation under SWRCB Resolution No. 93-62. After July 18, 1997, any person proposing to discharge solid waste at a waste management unit (Unit) that is subject to regulation by both the CIWMB/EA and the RWQCB shall make all ROWD submittals (including updates to a previously submitted ROWD) in the form of a Joint Technical Document (JTD), as provided in section 21585. After July 18, 1997, this reporting requirement also applies to the expansion of the RWQCB-Permitted Area of a new or existing Unit and to the development of new Units at an existing facility. Dischargers shall submit any applicable information required by this article to the RWQCB upon request. Dischargers shall provide information on waste characteristics, geologic and climatologic characteristics of the Unit and the surrounding region, installed features, operation plans for waste containment, precipitation and drainage controls, and closure and post closure maintenance plans as set forth in sections 21740, 21750, 21760, and 21769. For non-MSW Class III landfills, the RWQCB can waive the submittal of information it deems unnecessary to rendering a decision on the issuance of appropriate WDRs.

(1) [Reserved.]

(2) Final Closure/Post-Closure Plan — For Class II and III Units, a Final Closure and Post Closure Maintenance Plan shall be submitted with the closure notice required by (c)(5), unless, for landfill Units, the CIWMB requires submittal at an earlier date.

(3) Waiving Post-Closure Maintenance — The RWQCB can waive the post closure portion of the report if the discharger successfully completes clean-closure pursuant to section 21090(f) [for landfills], section 21400(b)(1) [for surface impoundments], or section 21410(a)(1) [for waste piles], or if the RWQCB finds that post closure maintenance is not necessary to prevent adverse impacts on waters of the state; provided that the RWQCB shall not waive post-closure maintenance for an MSW landfill subject to SWRCB Resolution No. 93-62 unless the Unit has been clean-closed. [Note: see also section 21900 for corresponding CIWMB requirements.]

(4) Notification of Change —The discharger shall notify the RWQCB of changes in information submitted under the applicable SWRCB-promulgated requirements of this division, including any material change in: the types, quantities, or concentrations of wastes discharged; site operations and features; or proposed closure procedures, including changes in cost estimates. The discharger shall notify the RWQCB a reasonable time before the changes are made or become effective. No changes shall be made without RWQCB approval following authorization for closure pursuant to the site closure notice required by (c)(5).

(5) Construction Quality Assurance Plan (CQA Plan).

(A) Submittal (new Units) — For Units constructed (or reconstructed) after July 18, 1997, the discharger shall submit a preliminary CQA Plan as an integral or separable part of the initial ROWD/JTD under (a). The discharger shall make such changes to the CQA Plan as may be necessary to maintain continued compliance with sections 20323 and 20324 (e.g., in the event of design changes, or as directed by the RWQCB). For a revised CQA Plan, the discharger shall submit the revised portions of the plan at least two weeks before beginning construction of any liner system or cover system.

(B) Submittal (existing Units) — For existing Units that do not have a CQA Plan meeting all the foregoing requirements, the discharger shall submit such a plan, or submit suitable modifications to an existing plan, prior to constructing, installing, or modifying any engineered feature at the Unit. In the absence of such construction, installation, or modification, the discharger shall make this submittal as part of whichever of the following documents is submitted first:

  1. the final closure and post-closure plan under (a)(2); or
  2. in the event that a release is discovered, as part of the proposed corrective action program under section 20425(d).

(b) ROWD/WDR Out-Of-Date or Nonexistent — Dischargers who own or operate a new or existing Unit which has not been classified under previous versions of these regulations, or for which the discharger has not submitted a report of waste discharge (ROWD) before July 18, 1997, shall notify the RWQCB of the existence of their Unit prior to July 18, 1998, and shall submit a ROWD which complies with  (a) before July 18, 1999, together with the appropriate filing fee. Dischargers who own or operate an existing Unit for which WDRs were last revised before November 27, 1984, shall submit a ROWD which complies with (a) to the RWQCB, together with the appropriate filing fee, on request.

(c) Notification.

(1) Change of Ownership — The discharger shall notify the RWQCB in writing of any proposed change of ownership or responsibility for construction, operation, closure, or post closure maintenance of a Unit. This notification shall be given prior to the effective date of the change and shall include a statement by the new discharger that construction, operation, closure, and post closure maintenance will be in compliance with any existing WDRs and any revisions thereof. The RWQCB shall amend the existing WDRs to name the new discharger.

(2) Response to Failure — The discharger shall promptly notify the RWQCB of any slope failure, occurring at the Unit. The discharger shall promptly correct any failure which threatens the integrity of containment features or the Unit, after approval of the method, in accordance with a schedule established by the RWQCB.

(3) Leachate Production Change Notification — The discharger shall notify the RWQCB within seven days if fluid is detected in a previously dry leachate collection and removal system or unsaturated zone monitoring system, or if a progressive increase is detected in the volume of fluid in a leachate collection and removal system.

(4) Monitoring Reports and Notifications — The discharger shall comply with the notification (and other submittal) requirements in Article 1, Subchapter 3, Chapter 3 of this division (section 20380 et seq.).

(5) Notification of Closure.

(A) Landfills — For landfills subject to the CIWMB-promulgated regulations of this division, the discharger shall notify the RWQCB that the Unit is to be closed, and shall provide such notice either at the same time as for the CIWMB, under section 21110, or 180 days prior to beginning any final closure activities (for the entire Unit or portion thereof), whichever is sooner.

(B) Other Units — For Units not subject to the CIWMB-promulgated regulations of this division, the discharger shall notify the RWQCB of Units to be closed at least 180 days prior to beginning any final closure activities, unless the RWQCB specifies a shorter interval in the WDRs for such a Unit.

(C) Affirmation — The notice provided pursuant to (c)(5)(A or B) shall include a statement that all closure activities will conform to the most recently approved closure plan and that the plan provides for site closure in compliance with all applicable federal and state regulations.

(6) Closure Completion Notice — The owner or operator of a Unit shall notify the RWQCB within 30 days after the completion of all closure activities for a Unit [or portion thereof, in the case of a landfill undergoing incremental closure under section 21090(b)(1)(D)]. The discharger shall certify under penalty of perjury that all closure activities were performed in accordance with the most recently approved final closure plan and in accordance with all applicable regulations. The discharger shall certify that closed Units shall be maintained in accordance with an approved post closure maintenance plan unless post closure maintenance has been waived pursuant to (a)(3).

(d) Appropriate Professional — Any report submitted under this section or any amendment or revision thereto which proposes a design or design change (or which notes occurrences) that might affect a Unit’s containment features or monitoring systems shall be approved by a registered civil engineer or a certified engineering geologist.


Authority cited: Section 1058, Water Code.
Reference: Sections 13172,13260 and 13267, Water Code; Section 43103, Public Resources Code.

Section 21720. SWRCB - Waste Discharge Requirements (WDRs). (C15: Section 2591)

(a) WDR Scope & Purpose — The RWQCB shall adopt waste discharge requirements (WDRs) that implement the applicable provisions of this title.

(b) WDR Revision — The RWQCB shall revise WDRs as necessary to implement the provisions of this title.

(c) Reclassification — Unit classifications and WDRs for existing Units shall be fully reviewed in accordance with schedules established by the RWQCB. The WDRs shall be revised to incorporate reclassification and retrofitting requirements as provided in section 20080(e) and section 20310, and to comply with applicable monitoring and response programs required under Article 1, Subchapter 3, Chapter 3 of this division (section 20380 et seq.). The RWQCB shall specify in WDRs the schedule for retrofitting of existing Units. All retrofitting shall be complete within five years from the issuance of the revised WDRs.

(d) Local Agencies — WDRs for new Units or for expansion of Units beyond the RWQCB-Permitted Area on July 18, 1997, shall not be effective until the RWQCB is notified that all local agencies with jurisdiction to regulate land use, solid waste disposal, air pollution, and to protect public health have approved use of the site for discharges of waste to land.

(e) Consolidation of Requirements at Multi-Unit Facilities — At the discretion of the RWQCB, WDRs for all Units in a single facility can be combined into a single set of WDRs applicable to the facility as a whole and to each respective Unit within the facility, but only if the requirements that apply to each respective Unit are clearly identified. Likewise, the RWQCB can consolidate the requirements relating to precipitation and drainage control systems for two or more adjacent Units, provided that such consolidated requirements reflect standards for the highest classification of Unit involved. Each solid waste Unit at a facility shall have its own respective monitoring program(s) under Article 1, Subchapter 3, Chapter 3 of this division (section 20380 et seq.); nevertheless, Units can share Monitoring Points, Background Monitoring Points, sampling efforts, and reporting periods to the degree that the RWQCB concurs that such sharing does not interfere with achieving the goal of the monitoring program(s) at each respective Unit.

(f) Records — The discharger shall be required to maintain legible records of the volume and type of each waste discharged at each Unit and the manner and (for Units other than surface impoundments) location of discharge. Such records shall be on forms approved by the SWRCB or RWQCB and shall be maintained at the waste management facility until the beginning of the post closure maintenance period. These records shall be available for review by representatives of the SWRCB and RWQCB at any time during normal business hours. At the beginning of the post closure maintenance period, copies of these records shall be sent to the RWQCB.


Authority cited: Section 1058, Water Code.
Reference: Sections 13172 and 13263, Water Code; Section 43103, Public Resources Code.

Section 21730. SWRCB - Public Participation. (C15: Section 2592)

(a) Notification Of Interested Parties — To ensure adequate public participation in any RWQCB proceeding relating to land disposal of wastes, the following persons and entities shall receive individual notice of any public hearing or board meeting either involving the classification of Units or involving the issuance or revision of WDRs for classified Units subject to this division:

(1) the discharger and responsible public agencies;

(2) news media serving the county as well as communities within five miles of the Unit;

(3) citizens groups representing local residents;

(4) environmental organizations in affected counties;

(5) interested industrial organizations; and

(6) for an MSW landfill at which a release has migrated beyond the facility boundary, any persons requiring notification pursuant to SWRCB Resolution No. 93 62 [see 40CFR258.55(g)(1)(iii)].

(b) Notice Requirements — Notice of hearings or meetings related to Units, or to discharges subject to this division, shall be given not less than 45 days before the meeting at which such actions will be taken, and copies of the agenda package shall be available not less than 30 days before the meeting. Nevertheless:

(1) enforcement actions involving releases of hazardous wastes can be taken at meetings which comply only with the shorter (10-day) notice requirements of the California State Body Open Meetings Act; and

(2) emergency actions [as described in section 647.2(d) Government Code)] taken by the RWQCB are exempt from public participation and notice requirements.

(c) Public Input Regarding a Proposed Corrective Action Program — Regarding the adoption of corrective action measures for an MSW landfill, including any hearing preparatory to such adoption, the RWQCB shall meet the federal requirements incorporated by reference into SWRCB Resolution No. 93-62 [i.e., see section 258.56(c & d) and section 258.57 of 40CFR258].


Authority cited: Section 1058, Water Code.
Reference: Sections 13172, 13260 and 13302, Water Code; Section 43103, Public Resources Code.

Section 21740. SWRCB - Waste Characteristics. (C15: Section 2594)

(a) ROWD To Include — Dischargers shall provide in the report of waste discharge ("ROWD," including any such report that is integrated into a Joint Technical Document, pursuant to section 21750) the following information about the characteristics of wastes to be discharged at each waste management unit (Unit) addressed by the ROWD.

(1) Constituents & Reference Numbers — A list of the types, quantities, and concentrations of wastes proposed to be discharged at each Unit. Wastes and known waste constituents shall be specifically identified according to the most descriptive nomenclature. A listing of all anticipated hazardous constituents that could be discharged to the Unit (e.g., household hazardous waste discharged to an MSW landfill might include constituents listed in Appendix II to 40CFR258); where available, this listing shall include constituent (or waste) reference numbers from listings established by DTSC or USEPA (e.g., Appendix IX to section 66264 of Title 22 of this code).

(2) TSD Methods — A description of proposed treatment, storage, and disposal methods.

(3) Expected Decomposition Products/Rate — An analysis of projected waste decomposition processes for each Unit indicating intermediate and final decomposition products and the period during which decomposition will continue following discharge.


Authority cited: Section 1058, Water Code.
Reference: Sections 13301 and 13304, Water Code; Section 43103, Public Resources Code.

Section 21750. SWRCB - Waste Management Unit (Unit) Characteristics and Attributes to be Described in the ROWD. [C15: Section 2595 & Section 2547(a) // T14: Section 17777, Section 18260, Section 18263  & Section 18264]

(a) Identify Potential Impairment — Dischargers shall provide in the report of waste discharge ("ROWD", including any such report integrated into a Joint Technical Document (JTD), pursuant to section 21585) an analysis describing how the ground and surface water could affect the Unit and how the Unit, including how any waste, if it escapes from the Unit, could affect the beneficial uses of ground water bodies (including, but not limited to, any aquifers underlying the facility) and surface water bodies. The RWQCB shall use this information to determine the suitability of the Unit with respect to ground water protection and avoidance of geologic hazards and to demonstrate that the Unit meets the classification criteria set forth in Article 3, Subchapter 2, Chapter 3, Subdivision 1 of this division (section 20240 et seq.).

(b) Support Proposed Classification — Dischargers shall provide the data required by this section regarding the physical characteristics of the Unit and the surrounding region in order to demonstrate suitability for the appropriate Unit classification. The ROWD shall present this information in understandable written, tabular, and graphic format, as appropriate, and this information shall be at a level of detail appropriate to support the RWQCB’s approving the Unit’s proposed classification. Maps, plans, diagrams, and other graphics shall be prepared to appropriate scale and each shall include a legend identifying the information presented. All sources of data shall be identified.

(c) Restate, Where Appropriate — If a report submitted by a discharger refers to another source, the relevant information from that source shall be restated in the report. If the source is not generally available, the relevant portion(s) of the source shall be included verbatim in the report as an appendix.

(d) Topography.

(1) Topographic Map — A map of the Unit and its surrounding region within one mile of the perimeter of the Unit, showing elevation contours, natural ground slopes, drainage patterns, and other topographic features.

(2) Floodplain — Identification of whether the facility is located within a 100-year floodplain. This identification must indicate the source of data for such determination and include a copy of the relevant Federal Emergency Management Agency (FEMA) flood map, if used, or the calculations and maps used where a FEMA map is not available. The submittal shall also identify the 100- year floodplain and any other special flooding factors (e.g. wave action) which must be considered in designing, constructing, operating, or maintaining the facility to withstand washout from a 100-year flood. Dischargers having facilities located in the 100-year floodplain shall provide the following information:

(A) engineering analysis to indicate the various hydrodynamic and hydrostatic forces expected to result at the site as consequence of a 100 year flood;

(B) structural or other engineering studies showing the design of Units and flood protection devices (e.g., floodwalls, dikes) at the facility and how these will prevent washout; and

(C) landfills accepting municipal solid waste shall demonstrate that:

1. for Class II landfills, the Unit meets the flooding requirements of section 20250(c); or

2. for Class III landfills, the Unit meets the requirements of section 20260(c).

(e) Climatology — Dischargers shall calculate required climatologic values for Units from measurements made at a nearby climatologically similar station. In addition to the required calculations for each Unit, dischargers shall provide the source data from which such values were calculated, together with the name, location, and period of record of the measuring station.

(1) Isohyetal Map — A map showing isohyetal contours for the proposed Unit and its surrounding region within ten miles of the facility perimeter, based on data provided by the National Weather Service or other recognized federal, state, local, or private agencies.

(2) Precipitation — Estimated maximum and minimum annual precipitation at the proposed Unit.

(3) Design Storm — Maximum expected 24 hour precipitation for the Unit’s design storm [i.e., for storm conditions specified as design criteria for the particular class of Unit as prescribed in table 4.1 of Article 4, Subchapter 2, Chapter 3, Subdivision 1 of this division].

(4) Evapotranspiration — Estimated mean, minimum, and maximum evaporation, with the months of occurrence of maximum and minimum evaporation, for the Unit.

(5) Runoff Volume/Pattern — Projected volume and pattern of runoff for the Unit including peak stream discharges associated with the storm conditions specified as design criteria for the particular class of Unit, as prescribed in table 4.1 of Article 4, Subchapter 2, Chapter 3, Subdivision 1 of this division.

(6) Wind Rose — An estimated wind rose for the Unit showing wind direction, velocity, and percentage of time for the indicated direction.

(f) Geology.

(1) Map and Cross-Sections — A comprehensive geologic map and geologic cross sections of the Unit showing lithology and structural features. Cross sections shall be indexed to the geologic map and shall be located to best portray geologic features relevant to discharge operations.

(2) Materials — A description of natural geologic materials in and underlying the location of both the Unit and its surroundings, including identification of each rock's type, relative age, distribution and dimension features, physical characteristics, special physical or chemical features (e.g., alteration other than weathering), distribution, the extent of any weathered zones, susceptibility to natural surface/near-surface processes, and all other pertinent lithologic data, all in accordance with current industry-wide practice [e.g., California Division of Mines and Geology’s (CDMG’s) Note 44 "Guidelines for Preparing Engineering Geologic Reports" (April, 1986)].

(3) Geologic Structure — A description of the natural geologic structure of materials underlying the location of the Unit and its surroundings, including: the attitude of bedding (if any); thickness of beds (if any); the location, attitude, and condition (tight, open, clay- or gypsum-filled, etc.) of any fractures; the nature, type (anticlinal, synclinal, etc.) and orientation of any folds; the location (surface and subsurface), age, type of surface displacement, attitude, and nature [e.g., aperture, amount of brecciation, degree of alteration and type of alteration products (tight, gouge-filled, etc.)] of any faults; and all other pertinent, related structural data, (all of the foregoing) in accordance with current industry-wide practices [e.g., CDMG’s Note 42 "Guidelines to Geologic/Seismic Reports" (May, 1986), and CDMG Note 49 "Guidelines for Evaluating the Hazard of Surface Fault Rupture" (May, 1986)].

(4) Engineering and Chemical Properties — The results of a testing and estimation program, carried out by a registered civil engineer or certified engineering geologist, as needed to formulate and support detailed site design criteria, including:

(A) determination of engineering and chemical properties of geologic materials underlying and surrounding the Unit, and of the Unit’s containment structure components (i.e., liner, LCRS, and final cover components);

(B) determination, or estimation, of the engineering and chemical properties of the waste and other layers placed, or to be placed, within the Unit.

(5) Stability Analysis — A stability analysis, including a determination of the expected peak ground acceleration at the Unit associated with the maximum credible earthquake (for Class II waste management units) or the maximum probable earthquake (for Class III landfills). This stability analysis shall be included as part of the ROWD (or JTD) for the proposed Unit, and an updated stability analysis (if the original analysis no longer reflects the conditions at the Unit) shall be included as part of the final closure and post-closure maintenance plan. The methodology used in the stability analysis shall consider regional and local seismic conditions and faulting. Data and procedures shall be consistent with current practice and shall be based on an identified procedure or publication. The stability analyses shall include modifications to allow for site specific surface and subsurface conditions. The peak ground acceleration so determined shall be the stability and factors of safety for all embankments, cut slopes, and associated landfills during the design life of the unit. For landfills and for waste piles and surface impoundments closed as landfills, final cover slopes shall be designed in compliance with the slope requirements of section 21090.

(A) The stability analysis shall ensure the integrity of the Unit, including its foundation, final slopes, and containment systems under both static and dynamic conditions throughout the Unit’s life, closure period, and post-closure maintenance period. The stability analysis shall include:

  1. the method used to calculate the factors of safety (e.g., Bishop's modified method of slices, Fellinius circle method, etc.);
  2. the name of any computer program used to determine the factors of safety; and
  3. a description of the various assumptions used in the stability analyses (height of fill, slope and bench configuration, etc.).

(B) The stability analysis shall address all portions of the Unit and its immediate surroundings that are located in areas subject to liquefaction or unstable areas with poor foundation conditions, as identified either in the ROWD or in the Seismic Safety Element of the County General Plan, and shall address all portions of the Unit that incorporate geomembranes as part of the Unit foundation or containment system (including the final cover).

(C) The stability analysis shall be prepared by a registered civil engineer or certified engineering geologist. Except as otherwise provided in (f)(5)(D), the report must indicate a factor of safety for the critical slope of at least 1.5 under dynamic conditions. Regardless of the analysis method used, the stability analysis report shall include at least the following elements:

  1. report preparation shall be in accordance with CDMG Note Number 42, "Guidelines for Geologic/Seismic Reports," May 1986, and CDMG Note Number 44, "Guidelines for Preparing Engineering Geologic Reports," April 1986, [both available from the California Division of Mines and Geology (CDMG), 801 K Street, MS14-34, Sacramento, CA 95814-3532, phone 916-445-5716] which are both incorporated by reference, and shall include the following seismicity elements:
    1. a review of earthquakes during historic times;
    2. location of active major faults; and
    3. surface investigation of the site and surrounding area;
  2. the location of the critical slope and other slopes analyzed to determine the critical slope shall be shown in map view;
  3. calculations used to determine the critical slope;
  4. a profile of the critical slope geometry showing the various layers including the proposed fill surface, final cover, mitigation berms, lifts or cells of waste, fluid levels, or any feature that may serve to reduce the stability of the slope or may represent a potential failure surface; and the proposed ground surface, soil or rock layers and structural features;
  5. the engineering properties of the refuse and other layers making up the site, shall be analyzed when determining the critical slope. These properties shall include a site specific assessment of the strength parameters, the unit weight and, if using (f)(5)(D), the shear wave velocity of each of these layers;
  6. an assessment of the engineering properties of the underlying foundation materials under both static and dynamic conditions based on field and laboratory tests as determined necessary by a registered civil engineer or certified engineering geologist;
  7. the maximum expected horizontal acceleration in rock at the site determined for the design earthquake for the Unit under section 20370 [i.e., for Class II Units, the maximum credible earthquake (MCE), and for Class III Units, at least the maximum probable earthquake (MPE)], as supported by data and analysis. For Class III landfills, the maximum expected acceleration in rock from the MCE can be used instead of the MPE;
  8. seismic shaking parameters other than acceleration shall also be included in any assessment of dynamic slope stability. These parameters shall include at least earthquake magnitude and duration;
  9. documentation of any peer reviewed reduction factor for acceleration applied to attenuate the acceleration through the soil column or fill materials; and
  10. documentation, as part of the dynamic stability determination, of any peer reviewed amplification factor used for acceleration in loose saturated soils, if the Unit is located in an area subject to liquefaction, poor foundation conditions, or seismic amplification.

(D) In lieu of achieving a factor of safety of 1.5 under dynamic conditions, pursuant to (f)(5)(C), the discharger can utilize a more rigorous analytical method that provides a quantified estimate of the magnitude of movement. In this case, the report shall demonstrate that this amount of movement can be accommodated without jeopardizing the integrity of the Unit’s foundation or the structures which control leachate, surface drainage, erosion, or gas.

(6) [Reserved.]

(7) Fault Identification & Proximity — Dischargers who own or operate new Class II Units [including expansions (of new or existing Units) built after November 27, 1984] shall identify any known Holocene fault within 200 feet of the facility (including any portions of such a fault underlying the Unit) in accordance with a procedure approved by the RWQCB. Dischargers who own or operate new Class III landfills [including expansions (of new or existing) landfills] shall identify any known Holocene fault underlying the landfill according to a procedure approved by the RWQCB. After July 18, 1997, dischargers required to submit a slope stability report, under (f)(5), shall provide a review of historical seismicity within a 100 km (62 mile) radius of the facility, including the name of the fault, type of faulting, activity on the fault, design event for the fault (for Class II Units, the fault’s MCE, for Class III Units, the fault’s MPE), distance from the facility, the expected ground motions (horizontal and vertical) at the facility resulting from the fault’s design event, the expected duration of strong motion at the site resulting from the fault’s design event, and an estimation of the cumulative duration of strong motion from aftershocks.

(g) Hydrogeology.

(1) General — An evaluation of the water bearing characteristics of the natural geologic materials identified under (f)(2)including determination of hydraulic conductivity, delineation of all ground water zones and basic data used to determine the above.

(2) Hydraulic Conductivity — An evaluation of the in-place hydraulic conductivity of soils immediately underlying the Unit. This evaluation shall include:

(A) hydraulic conductivity data, in tabular form, for selected locations within the perimeter of the Unit;

(B) a map of the unit showing test locations where these hydraulic conductivity data were obtained; and

(C) an evaluation of the test procedures and rationale used to obtain these hydraulic conductivity data.

(3) Flow Direction(s) — An evaluation of the perennial direction(s) of ground water movement within the uppermost ground water zone(s) within one mile of the waste management facility ’s perimeter.

(4) Capillary Rise — Estimates of the height to which water rises due to capillary forces above the uppermost ground water zone(s) beneath and within one mile of the waste management facility perimeter. These estimates shall include an evaluation of the methods and rationale used in their development.

(5) Springs — A map showing the location of all springs within the waste management facility and within one mile of its perimeter. The map shall be accompanied by tabular data indicating the flow and the mineral quality of the water from each spring.

(6) Water Quality — An evaluation, supported by water quality analyses, of the quality of water known to exist under or within one mile of the waste management facility’s perimeter, including all data necessary to establish the water quality protection standard (Water Standard) for the Unit, under section 20390.

(7) Background — A tabulation of background water quality for all applicable Monitoring Parameters and indicator parameters identified for each applicable monitoring program under sections 20420-20435 and for all Constituent of Concern (COCs) identified under section 20395.

(A) Background water quality for an indicator parameter, Monitoring Parameter or COC in ground water shall be based on data from quarterly sampling of wells upgradient from the Unit for one year. These analyses shall:

  1. account for measurement errors in sampling and analysis; and
  2. account for seasonal fluctuations in background water quality, if such fluctuations are expected to affect the concentration of the waste constituent.

(B) In case an evaluation monitoring program is initiated prior to fulfilling the requirements of (g)(7)(A), the discharger shall, where feasible, establish background water quality based on a combination of all background data then available — including (1) all background data so far taken to satisfy (g)(7)(A), (2) all background data obtained during accelerated sampling efforts under section 20425(b), and (3) all appropriate water quality data from before WDRs were issued — in lieu of the one-year monitoring program under (g)(7)(A).

(C) Background water quality of ground water shall be based on sampling of wells that are not upgradient from the Unit only where:

  1. hydrogeologic conditions do not allow the determination of the upgradient direction; or
  2. sampling at other wells will provide a representative indication of background water quality.

(D) In developing the data base used to determine a background value for each indicator parameter or waste constituent in ground water, the discharger shall take a minimum of one sample from each well used to determine background. A minimum of four samples shall be taken from the entire system used to determine background water quality, each time the system is sampled. In a case where there is only one background well, the four measurements per quarter shall be obtained by taking four independent samples, pursuant to section 20415(e)(12)(B), and conducting separate analyses for each such sample.

(h) Land and Water Use.

(1) Well Map — A map showing the locations of all water wells, oil wells, and geothermal wells within the facility boundary and showing the locations of all such wells within one mile outside of the facility boundary.

(2) Well Owner — Name and address of the owner of each well indicated in (h)(1).

(3) Well Information — Well information, where available, for each water well indicated in (h)(1) including, but not limited to:

(A) total depth of well;

(B) diameter of casing at ground surface and at total depth;

(C) type of well construction (cable tool, rotary, etc.);

(D) depth and type of perforations;

(E) name and address of well driller;

(F) year of well construction;

(G) use of well (agricultural, domestic, stock watering, etc.);

(H) depth and type of seals;

(I) lithologic, geophysical, and other types of well logs, if available; and

(J) water levels, pump tests, water quality, and other well data, if available.

(4) Land Use — Current land use within one mile of the perimeter of the Unit, including:

(A) types of land use (e.g., residential, commercial, industrial, agricultural, recreational, etc.);

(B) types of crops;

(C) types of livestock; and

(D) number and location of dwelling units.

(5) G.W. Use — Current and estimated future use of ground water within one mile of the facility perimeter.

(i) Preliminary Closure Plan — For any proposed Unit (including a proposed lateral expansion of a Unit’s RWQCB-Permitted Area) and for any Unit not yet required to undergo final closure, the ROWD shall contain a preliminary closure and post-closure maintenance plan, under section 21769, containing a generalized cost estimate for closure costs and for annualized post-closure costs, supported by sufficient detail to validate the plausibility of the estimate. For any Unit (or portion thereof, in the case of a landfill undergoing complete final closure of a portion of the Unit) that is closing (or that is required to close), the ROWD shall be amended to contain a final closure plan, under section 21769, containing sufficient detail for the RWQCB to validate that the closed Unit will meet all applicable SWRCB-promulgated closure-related requirements of this title, and containing an updated, itemized closure cost estimate.


Authority cited: Section 1058, Water Code.
Reference: Sections 13172 and 13267, Water Code; Section 43103, Public Resources Code.

Section 21760. SWRCB - Design Report and Operations Plan. (C15: Section 2596)

(a) Design Report.

(1) Preliminary and As-Built Plans — As part of the report of waste discharge ("ROWD", including any such report integrated into a Joint Technical Document, pursuant to section 21585), dischargers who own or operate classified waste management units (Units) shall submit, for each such Unit, detailed preliminary and (later, after completion) as built plans, specifications, and descriptions for all liners (under section 20330) and other containment structures (e.g., final cover, under section 21090), leachate collection and removal system components (under section 20340), leak detection system components [under section 20415(b-d)], precipitation and drainage control facilities (under section 20365), and interim covers installed or to be installed or used (under section 20705). In addition, the ROWD shall contain a description of, and location data for, ancillary facilities including roads, waste handling areas, buildings, and equipment cleaning facilities, only insofar as the location and operation of these ancillary facilities could have an effect upon water quality.

(2) [Reserved.]

(3) Monitoring System Plans and Rationale — Dischargers shall submit detailed plans and equipment specifications for compliance with the ground water and unsaturated zone monitoring requirements of Article 1, Subchapter 3, Chapter 3, Subdivision 1 of this division (section 20380 et seq.). Dischargers shall provide a technical report which includes rationale for the spatial distribution of ground water and unsaturated zone monitoring facilities, [e.g., the location and design of Monitoring Points and Background Monitoring Points for each monitored medium under section 20415(b-e)], and for the selection of other monitoring equipment. This report shall be accompanied by the following information, which shall be updated throughout the Unit’s active life, closure period, and post-closure maintenance period as needed to reflect the as-built system:

(A) Map — a map showing the locations of proposed monitoring facility components; and

(B) Plans & Specifications — drawings and data showing construction details of proposed monitoring facilities. These data shall include:

  1. casing and test hole diameter;
  2. casing materials (PVC, stainless steel, etc.);
  3. depth of each test hole;
  4. the means by which the size and position of perforations shall be determined, or verified, in the field;
  5. method of joining sections of casing;
  6. nature of filter material;
  7. depth and composition of seals;
  8. method and length of time of development; and

(C) Unsaturated Zone Monitoring — specifications, drawings, and data for location and installation of unsaturated zone monitoring equipment.

(4) Inspection Procedures — Dischargers shall submit proposed construction and inspection procedures for the Unit [including, after July 18, 1997, a CQA Plan under section 21710(a)(5)] to the RWQCB for approval.

(b) Operation Plans — Dischargers shall submit operation plans describing those Unit operations which could affect water quality, including but not limited to:

(1) a description of proposed treatment, storage, and disposal methods;

(2) contingency plans for the failure or breakdown of waste handling facilities or containment systems, including notice of any such failure, or any detection of waste or leachate in monitoring facilities, to the RWQCB, local governments, and water users downgradient of Units; and

(3) a description of inspection and maintenance programs which will be undertaken regularly during disposal operations and the post closure maintenance period.


Authority cited: Section 1058, Water Code.
Reference: Section 13360, Water Code; Section 43103, Public Resources Code.

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