General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 502081 Western Placer Waste Management Authority Government Agency Combination 11476 C Avenue Auburn, CA 95603 916-543-3960 Info@wpwma.com(+) Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 827097 Western Placer Waste Management Authority Materials Recovery Facility Placer 5S Composting Facility Owner and Operator 08/09/2016 null 272229 Western Regional Sanitary LF Placer 5S Land fill Owner 05/03/1999 null 272220 Western Placer Compost Fac Placer 5S Composting Facility Owner 03/18/2009 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 439909 Co-Permitee SB 5A310309001 13627 Order Co-Permitee under 2019-0006-DWQ for Western Placer Waste Management Authority Active SLIC 2019-0006-DWQ 03/20/2019 null Discharger 08/24/2020 null 408196 Enrollee - WDR 5S 5A31SC00005 Enrollee under 2015-0121-DWQ-R5S006 for Western Placer Waste Management Authority Materials Recovery Facility Active LNDISPOTH 2015-0121-DWQ 03/16/2017 null Discharger 08/09/2016 null 329292 WDR 5S 5A310309001 WDR R5-2007-0047 for Western Placer Waste Mgmt Aut, Western Reg Sanitary LF Active LFOPER R5-2007-0047 05/04/2007 null Discharger 03/18/2009 null 259764 Letter 5S null LTR LT941209 for Western Placer Waste Management Authority Historical LNDISP LT941209 12/09/1994 12/09/1994 Discharger 03/18/2009 null 194462 Enrollee 5S 5A312043001 Enrollee under Compost Waiver for WESTERN PLACER COMPOST FAC Historical LNDISP 96-031 12/09/1996 01/01/2003 Discharger 03/18/2009 null 147132 WDR 5S 5A310309001 WDR 99-126 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 99-126 09/17/1999 12/05/2002 Discharger 03/18/2009 null 146804 WDR 5S 5A310309001 WDR 97-043 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 97-043 02/28/1997 09/16/1999 Discharger 03/18/2009 null 140738 WDR 5S 5A310309001 WDR 90-272 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 90-272 09/28/1990 02/27/1997 Discharger 03/18/2009 null 140271 WDR 5S 5A310309001 WDR 88-108 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 88-108 06/24/1988 09/27/1990 Discharger 03/18/2009 null 139043 WDR 5S 5A310309001 WDR 79-174 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 79-174 07/27/1979 06/23/1988 Discharger 03/18/2009 null 131407 WDR 5S 5A310309001 WDR 02-218 for WESTERN PLACER WASTE MGMT AUTH Historical LNDISP 02-218 12/06/2002 05/03/2007 Discharger 03/18/2009 null Violations within the past calendar year Violation ID Occurrence Date Violation Type Violation Description Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked To Enf. 1126004 04/10/2024 Order Conditions The concrete lined drainage channel that discharges runoff from the Receiving/ Processing Pad to the North Pad has been intentionally blocked to facilitate construction atop the North Pad. The blockage of this drainage channel could result in a direct discharge of compost leachate to surface water. Violation null Inspection Western Placer Waste Management Authority Materials Recovery Facility 408196 2015-0121-DWQ Y 1126003 04/10/2024 Order Conditions Compost and compost leachate appears to have been pushed or flowed off the Facility’s containment pads at two locations: 1) along the northern side of the Receiving /Processing Pad and 2) along the norther side of the South Pad. Violation null Inspection Western Placer Waste Management Authority Materials Recovery Facility 408196 2015-0121-DWQ Y 1125998 04/10/2024 Order Conditions The legal requirements outlined below are specific to the violation noted above. 1. Section 21750(f) of Title 27 states in part: “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 addition of soil material onto these previously closed Modules has invalidated any previously approved slope stability analysis. The original analysis no longer reflects the conditions of the Unit. The absence of an approved stability analysis is a violation of Title 27. 2. Finding 40 of the WDRs states in part: “The Discharger has been implementing measures proposed in the 23 September 1997 Corrective Action Program and subsequent addendum. The CAP specifies the following actions: installation of 8 infill gas wells; closure of Modules 1, 2, 10, 11 and 12” While it is practice to allow a Discharger to manipulate the system to optimize the extraction of landfill gas, the removal of 17 of the systems 22 wells would be an unapproved system modification. This significant reduction of the landfill gas system Further, Section 20430(f) of Title 27 address the termination of corrective action measures and states: “…corrective action measures taken pursuant to ¶(c)(e.g., pumping and treatment of ground water) may be terminated when the discharger demonstrates to the satisfaction of the RWQCB that the concentrations of all COCs are reduced to levels below their respective concentration limits throughout the entire zone affected by the release.” No demonstration of compliance was provided. These WMU Modules are still in corrective action. For these reasons, the removal of landfill gas wells from a unit in corrective action, without Regional Board approval is a violation of Title 27. 3. Finding 70 of the WDRs states in part: “The RWD/JTD submitted by the Discharger contains a preliminary closure and post-closure maintenance plan (PCPCMP) for the landfill. The PCPCMP includes information required by Title 27 CCR Section 21769(b), and includes a lump sum estimate of the cost of carrying out all actions necessary to close each Unit, to prepare detailed design specifications, to develop the final closure and post-closure maintenance plan, and to carry out the first thirty years of post-closure maintenance. The total amount of the closure cost estimate is $16,846,912, and the amount of the post-closure maintenance cost estimate is $7,374,807. The Regional Board hereby approves these cost estimates.” Like the now invalid seismic analysis, the new morphology of Modules 1, 2, 10 and 11, creates a conflict with the WDRs. Therefore, the financial assurance estimates are no longer applicable and must be recalculated. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1124321 11/02/2023 Order Conditions Construction of Module 6 of the Class II Waste Management Unit (WMU) has begun without Central Valley Water Board staff approval. WDRs/General Construction Specifications D.1 1. The Discharger shall submit for review and approval prior to construction, design plans and specifications for new Units and modules of existing Units, that include the following: a. A Construction Quality Assurance Plan meeting the requirements of §20324 of Title 27; and b. A geotechnical evaluation of the area soils, evaluating their use as the base layer; and c. An unsaturated zone monitoring system, which is demonstrated to remain effective throughout the active life, closure, and post-closure maintenance periods of the Unit, which shall be installed beneath the composite liner system in accordance with §20415(d) of Title 27. Violation null Report Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120457 06/07/2023 Order Conditions Violation 13 – A seep and exposed section of damaged final cover was observed atop Module 16 (Figures 43, 44, and 45). The Discharger was working to address the seep and repair the damage section of cover located near the seep. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120456 06/07/2023 Order Conditions Violation 12 – A larger section of damaged liner remains exposed atop Module 11 (Figure 25 and Figures 27 through 31). Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120455 06/07/2023 Order Conditions Violation 11 – Deep-rooted Milk-Thistle was observed atop the cover (Figures 57). Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120454 06/07/2023 Order Conditions Violation 10 – Multiple Facility monitoring locations are no longer properly labeled. The original labels have faded to the point that they are no longer readable. (Figures 41, 48, 53, 54, and 60). All Facility monitoring and LFG extraction points must be labeled so that they can be easily identified in the field. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120453 06/07/2023 Order Conditions Violation 9 – Recently re-graded sections of the outer southern slope of Module 16 appear to be steeper than 3.5 to one, as allowed by the WDRs (Figures 34 and 35). Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120452 06/07/2023 Order Conditions Violation 8 – Minor soil excavations, which could result in pounding, were observed atop the soil stockpiles located atop Modules 1, 2, 10, and 11 (Figure 58). Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120451 06/07/2023 Order Conditions Violation 7 – Areas of notable sedimentation and ponding were observed along the storm water V ditch the runs along Module 16 (Figure 47). Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120450 06/07/2023 Order Conditions Violation 6 – Erosional damage has occurred atop the Module 2 cover, beyond the limit of the soil stockpile placed atop the original Module 2 cover (Figures 14 and 15). Similar erosional damage was seen in other Modules as well, between the transition between soil stockpile and original cover. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120449 06/07/2023 Order Conditions The erosion noted in Violation 4 above has caused significant sedimentation to occur in the storm water V ditch that run along the western side of Module 1, 2, and 10, as well as within the northern storm water sedimentation basin. The degree of sedimentation observed will prevent these storm water control features from operating as designed during future rain events. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120448 06/07/2023 Order Conditions Significant and widespread erosion has occurred across the soil stockpiles placed atop Modules 1, 2, 10, and 11 resulting in significant cover damage. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120447 06/07/2023 Order Conditions Violation 3 – Scattered waste was observed in Module 16 outside the limit of the active face Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120446 06/07/2023 Order Conditions EViolation 2 – The Discharger stated that they, at the request of the Placer County sewer district and without notifying Central Valley Water Board staff, intentionally shut off and/or limited leachate extraction from the Facility’s LCRS sumps, during daytime operation, which resulted in the leachate level violations noted above. Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1120445 06/07/2023 Order Conditions Elevated leachate levels were observed in multiple LCRS sumps Violation null Inspection Western Regional Sanitary LF 329292 R5-2007-0047 Y 1119949 06/07/2023 Order Conditions Violation 3. Central Valley Water Board files do not contain a Final Post-Construction Quality Assurance (CQA) Report documenting the installation of the North Compost Leachate Pond in accordance with the Compost General Order. Violation N Inspection Western Placer Waste Management Authority Materials Recovery Facility 408196 2015-0121-DWQ Y 1119948 06/07/2023 Order Conditions Violation 2. Central Valley Water Board files do not contain any documentation that the proposed expansion and lining of the North Compost Pond was ever approved by Water Board staff. could not document Violation null Inspection Western Placer Waste Management Authority Materials Recovery Facility 408196 2015-0121-DWQ Y 1119947 06/07/2023 Order Conditions Violation 1. The concrete lined drainage channel that discharges runoff from the Receiving/Processing Area to the North Pad has been intentionally blocked to facilitate construction atop the North Pad, as documented in the attached 7 June 2023 Inspection Report. Violation null Inspection Western Placer Waste Management Authority Materials Recovery Facility 408196 2015-0121-DWQ Y Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status 456656 Notice of Violation null NOV 04/22/2024 for Western Placer Waste Management Authority LNDISPOTH 04/22/2024 Historical 456655 Notice of Violation null NOV 04/22/2024 for Western Placer Waste Management Authority LFOPER 04/22/2024 Historical 455956 Notice to Comply null NTC 02/20/2024 for Western Placer Waste Management Authority LFOPER 02/20/2024 Historical 455952 Notice of Violation null NOV 09/27/2023 for Western Placer Waste Management Authority LFOPER 09/27/2023 Historical 455951 Notice of Violation null NOV 09/12/2023 for Western Placer Waste Management Authority LNDISPOTH 09/12/2023 Historical 450548 Staff Enforcement Letter null SEL 12/12/2022 for Western Placer Waste Management Authority LFOPER 12/12/2022 Historical 447957 Notice of Violation null NOV 09/15/2021 for Western Placer Waste Management Authority LFOPER 09/16/2021 Historical 428932 Notice of Violation null NOV 01/17/2019 for Western Placer Waste Management Authority LFOPER 01/17/2019 Historical 412921 Notice of Violation null NOV 03/03/2017 for Western Placer Waste Management Authority LFOPER 03/03/2017 Historical 400851 Notice of Violation null NOV 04/20/2015 for Western Placer Waste Management Authority LFOPER 04/20/2015 Historical 400850 Notice of Violation null NOV 04/22/2015 for Western Placer Waste Management Authority LFOPER 04/22/2015 Historical 379964 Staff Enforcement Letter null SEL 06/14/2011 for Western Placer Waste Management Authority LFOPER 06/14/2011 Historical 251902 Staff Enforcement Letter null SEL 11/24/2004 for Western Regional Sanitary Landfill LNDISP 11/24/2004 Historical 249686 Notice of Violation null NOV 11/24/2003 for Western Regional Sanitary Landfill LNDISP 11/24/2003 Historical 236738 Staff Enforcement Letter null SEL 7/9/2001 for Western Regional Sanitary Landfill LNDISP 07/09/2001 Historical 231976 Oral Communication null Verbal 1/20/1999 for Western Regional Sanitary Landfill LNDISP 01/20/1999 Historical 231975 Staff Enforcement Letter null SEL 4/28/1999 for Western Regional Sanitary Landfill LNDISP 04/28/1999 Historical 231948 Oral Communication null Verbal 2/24/2000 for Western Regional Sanitary Landfill LNDISP 02/24/2000 Historical 231947 Waste Discharge Requirements null Enforcement WDRs 5A310309001 for Western Regional Sanitary Landfill LNDISP 02/28/1997 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status