City of Riverside-Tequesquite Landfill Variance Monitoring Oct 2022.doc
City of Riverside October 5, 2022
Nicole Greenwood
3900 Main Street
Riverside, CA 92522
RE: Additional Monitoring, Sampling, Testing and Reporting for the Tequesquite Landfill, Gas Collection System Riverside, California Variance Case No. 6157-2
Dear Ms. Greenwood,
After careful review of the proposed variance conditions for case No,. 6157-2 and the existing monitoring being performed ECOTEC has prepared this quote for additional monitoring bridge the gaps in monitoring, testing, and reporting.
ECOTEC’s staff has been performing operations, maintenance, monitoring, and reporting services for the Tequesquite Landfill (TL) for fifteen years. During that time we have been successful in reducing the required monitoring by South Coast Air Quality Management District (SCAQMD) and keeping the system in compliance. ECOTEC understands that compliance during the repairs is unlikely and monitoring, sampling, laboratory testing and reporting that was reduced to quarterly or biannual will now need to be performed every two weeks.
ECOTEC is an innovative force. We have methane monitoring and detection instrumentation used globally and have developed software specifically for landfill monitoring and reporting which is used by the largest waste company in the US. Our staff has provided landfill engineering and technician training classes both domestically and abroad.
The attached proposal includes our scope of work and detailed cost of the services. If you have any questions or would like further information, please contact Mitchal Cassel at (909) 906-1001 extension 130.
Sincerely,
Mitchal Cassel
NPI Director
ECOTEC Solutions, Inc.
cc: Jamie Tooley, CEO
Proposal for
Additional Monitoring, Sampling, Testing and
Reporting and for the Tequesquite Landfill Gas
Collection System Variance Case No. 6157-2
Presented to:
City of Riverside
Public Works Department
October 5, 2022
By:
ECOTEC Solutions, Inc.
850 S. Via Lata, Suite 115
Colton, CA 92324
(909) 906-1001 (office)
(909) 906-1002 (fax)
City of Riverside-Tequesquite Landfill Variance Monitoring Oct 2022.doc
ECOTEC is currently preforming all the monitoring, sampling, testing, and reporting being proposed just much less frequently than required under the variance. We intend to use the existing monthly, quarterly, and biannual monitoring, sampling, and testing as partial fulfillment of the variance requirements. This scope of work defines the additional monitoring, sampling, testing, and reporting necessary. We assume that the variance will be in place for approximately 8.5 months and have used that time frame for the gap analysis between the needs for the variance and the existing monitoring, sampling, testing, and reporting.
Perimeter Probe Monitoring
Currently ECOTEC is monitoring the probes monthly, the variance requires probes to be monitored at least every two weeks. The probes will be monitored at least once more per month, twice on a couple month as necessary.
Perimeter Probe Sampling and Testing
Currently ECOTEC samples and obtains laboratory testing of one probe each quarter. The variance requires at least one probe to be sampled and tested every two weeks. If there is landfill gas found in the probes more than one may need to be sampled and laboratory tested. ECOTEC will sample and laboratory test one probe every two weeks and will notify the city if additional sampling and testing becomes necessary.
Ambient Air Monitoring
Currently ECOTEC samples and obtains laboratory testing of ambient air twice a year. The variance requires ambient air sampling and testing at least every two weeks along the southern boundary.
ECOTEC will sample and laboratory test ambient air along the southern boundary every two weeks.
Wellhead Monitoring
Currently ECOTEC is monitoring the wellheads monthly, the variance requires wellheads to be monitored at least every two weeks. The wells will be monitored at least once more per month, twice on a couple month as necessary.
Integrated Surface Monitoring
Currently ECOTEC preforms integrated surface monitoring of each of the established grids each quarter.
The variance requires that monitoring be performed at least every two weeks. The site has approximately 100 grids, each approximately 50,000 square feet in area. Each grid must be monitored over a continuous 25-minute period while a field technician walks a prescribed path over the grid. The monitoring shall be done not more than 3 inches above the surface of the landfill and only when meteorological conditions meet the requirements for wind speed and precipitation. Monitoring must be conducted on days when there had been no rain during the preceding 72 hours. Monitoring shall be discontinued if instantaneous wind speeds are greater than 10 miles per hour (mph), or if the average wind speed over a 15-minute period exceeds 5 mph. When weather is permitting ECOTEC will monitor each grid every two weeks.
Integrated Surface Sampling and Testing
Currently ECOTEC preforms integrated surface sampling and laboratory testing for two grids each quarter. The variance requires that sampling and testing be done for at least two grids and up to 10% of the grids that are measured with more that 25ppmv TOC at least every two weeks. ECOTEC will sample
SCOPE OF WORK
City of Riverside-Tequesquite Landfill Variance Monitoring Oct 2022.doc
and laboratory test two girds every two weeks and will notify the city if additional sampling and testing becomes necessary.
Instantaneous Surface Monitoring
Currently ECOTEC preforms instantaneous surface monitoring of each of the established grids each quarter. The variance requires that monitoring be performed at least monthly. The site has approximately 100 grids, each approximately 50,000 square feet in area. Each grid must be monitored over a continuous 25-minute period while a field technician walks a prescribed path over the grid. The monitoring shall be done not more than 3 inches above the surface of the landfill and only when meteorological conditions meet the requirements for wind speed and precipitation. Monitoring must be conducted on days when there had been no rain during the preceding 72 hours. Monitoring shall be discontinued if instantaneous wind speeds are greater than 10 miles per hour (mph), or if the average wind speed over a 15-minute period exceeds 5 mph. When weather is permitting ECOTEC will monitor each grid every month.
Reporting
Currently ECOTEC provides monthly monitoring and quarterly 1150.1 reports. With monitoring, sampling and testing being performed every two weeks we propose to report on the same basis. The existing reports will continue to be prepared and a more concise supplemental report that document only the monitoring, sampling, and testing required for the variance will be provided to the city within two weeks of the end of each two week period, Each report shall include an executive summary, a separate discussion of each task completed, summary tables of field measurements and laboratory analytical results, and a site map showing the locations of all monitoring points. Field data sheets and laboratory analytical reports will be included as appendices.
City of Riverside-Tequesquite Landfill Variance Monitoring Oct 2022.doc
Site Task Summary: City of Riverside
Additional Monitoring and Repoting Services for the Tequesquite Landfill Task Frequency Monthly Total Project Total
Wellfield
Monitor extraction wells Monthly $1,690.00 $14,365.00
LFG Probe monitoring Monthly $260.00 $2,210.00
Rule 1150.1 Monitoring $0.00
Instantaneous Surface Monitoring Monthly $2,730.00 $23,205.00 Integrated Surface Sampling Biweekly $3,900.00 $33,150.00 Ambient Air Monitoring Bi Weekly $520.00 $4,420.00
Perimeter Probe Monitoring Sampling Biweekly $390.00 $3,315.00 Reporting Biweekly $850.00 $7,225.00
Sub-Total $10,340 $87,890.00
Reimbursables
Equipment/Calibration Gases/Tedlar Bags Biweekly $400.00 $3,400.00 Lab Samples for 1150.1 (5 samples) Biweekly $6,300.00 $53,550.00 Sub- Total $6,700.00 $56,950.00
Total $17,040.00 $144,840.00
NOTE: Invoicing will be submitted on a monthly, progressive basis.
COST OF SERVICES