Alternative Daily Cover (ADC)Investigation Report

Report Presentation Overview

REQUIREMENTS

FACILITY SELECTION

METHODOLOGY

FINDINGS

NEXT STEPS

CalRecycle Requirements for ADC California Code of Regulations (CCR), Title 14 and 27

Disposal Reporting System (DRS) Annual Reporting14 CCR § 18810.9

Landfill Record Keeping 27 CCR § 20510 (g)

ADC Application State Minimum Standards 27 CCR § 20690 (a)(1)

Facility SelectionHighest Ratios Reported to DRS in 2012 Top 10 Sites with Highest Total ADC to Waste Disposed Ratios

ADC to disposal ranges: 494% to 16.7%

Highest Processed Green Material ADC to Waste Ratios 8 of 15 sites used processed green material

ADC to disposal ranges: 363.9% to 4.9% Top 5 with highest ADC to waste ratio

ADC to disposal ranges > 25%

Facility Selection - Range of Percentages

Zanker Walker Azusa L and D Portrero Watsonville Rock Creek Vasco Scholl Canyon

Simi Valley Clover Flat Pebbly Beach Calabasas Pumic Valley0.00%

50.00%

100.00%

150.00%

200.00%

250.00%

300.00%

350.00%

400.00%

450.00%

500.00%

Total ADC % of Disposal

Facility Selection - List Azusa Land Reclamation Co. Landfill

Calabasas Sanitary Landfill

City of Watsonville Landfill

Clover Flat Landfill

L and D Landfill

Olinda Alpha Sanitary Landfill

Pebbly Beach (Avalon) Disposal Site

Top 5 Processed Green Material ADC to Waste Disposed Ratio

Potrero Hills Landfill

Pumice Valley Landfill

Rock Creek Landfill

Scholl Canyon Landfill

Simi Valley Landfill & Recycling Center

Vasco Road Sanitary Landfill

Walker Landfill

Zanker Material Processing Facility

Investigation Methodology - Record Review

Review of DRS Reports Selection of Sites Review of Board of Equalization Reports Reviewing Permit Documents

Solid Waste Facility Permit

Report of Disposal Site Information (RDSI)/ Joint Technical Documents (JTD)

ADC Demonstration Projects

Previous Inspection Reports

Investigation Methodology - Facility Review

Facility Inspections Landfill record review Site observation of ADC use Test hole digging

Interviewing Facility Operators Interviewing LEAs

Findings - Facility Variables Density of ADC material Types of ADC Use Frequency of ADC Use Amount of waste disposed Size and Shape of Working/Active Face Waste in Place Density

Findings 2 Facilities Likely Over Used ADC 8 Facilities Mis-reported to DRS

6 Over-reported ADC: No indications of over-use 2 Over-used could not be determined

5 Facilities had No Errors No record keeping or DRS reporting errors were found No indications of over use

Findings – Nature of Mis-reporting

Reporting ADC Accepted as ADC Used Combining ADC Material with Another Recycled Material Reporting Beneficial Reuse as ADC Reporting Intermediate Cover as ADC Including Soil as ADC Using the Incorrect Conversion Factor (tons to cubic yards) Appyling Unapproved ADC.

Next Steps Education and Outreach LEAs & Operators Training – Fall 2014 State Minimum Standards Training Development of DRS Outreach Materials

New DRS Reports and Tools on the CalRecycle Website Enhanced Focus on ADC Use and Record Keeping during CalRecycle’s future 18-month Inspections

Thanks to the Investigation Team!