Fact Sheet, Lopez Canyon Sanitary Landfill

by

City of Los Angeles
Department of Public Works
Bureau of Sanitation
Lopez Canyon Landfill

Updated: 07-18-91

Address: 11950 Lopez Canyon Road
Lakeview Terrace, CA 91352

Size: Property - 399 acres
Fill Area - 166 acre

Date Started: October, 1975

Type of Refuse: Residential, street sweepings, construction - demolition. No infectious waste, septic tank pumpings, sewage sludge, animal carcasses or hazardous waste.

Total Capacity: Tonnage (including Disposal areas A, B, AB +, and C) - 19,200,000 tons

Remaining Tonnage (in Disposal Area C) - 5,461,000 tons

Volume (including Disposal Area A, B, AB +, and C) - 30,720,000 cubic yards

Remaining Volume (in Disposal Area C) - 8,738,000 cubic yards

Permitted
Maximum Daily Inflow: 400 trucks; 4,000 tons of refuse

1993 Average Daily Inflow: 270 trucks; 3,512 tons of refuse

Average Depth of Fill: 175 feet

Gas Extraction System: Combination of horizontal and vertical gas extraction wells, gas collection and flaring systems.

Gas Flow: 2,500,000 cubic feet of methane (average)

Improvements: Crew facilities, water supply system, scale facility, access roads, equipment repair shop, front entrance landscaping with a 2.5 acre park. Load checking for hazardous and radioactive materials, flare station, condensate treatment facilities, fuel station, storm drainage system.

Future Use: Non-irrigated, low intensity open meadow area intended for passive recreational activity.

Environmental Controls

Emission Control: Gas flare system has capacity of 8750 cubic feet per minute.

Monitoring: Monthly sampling, laboratory analyses, and reporting of result of integrated, instantaneous, and ambient air monitoring programs.

For a research study, staff is voluntarily monitoring ambient air conditions at four locations adjacent to the landfill on privately owned property. Samples are being taken during three summer months and compared to on-site ambient air monitoring results.

Future Systems: An energy recovery system has been propose to be built on-site and an agreement with a private firm to finance, construct, and operate an energy recovery system that uses steam boiler technology has been initiated. The private company, Cambrian Energy, would sell electrical power generated at the facility. It is estimated that enough power for 10,000 homes can be generated from Lopez Canyon Landfill gas. The project is in the engineering design stage.

Dust Control: 500,000 gallons per day of water are used to control dust. Watering for dust control occurs between 7:00 a.m. and 5:30 p.m.

Litter Control: A litter patrol crew of five permanent and six temporary employees remove litter from 11 miles of roads surrounding the landfill every weekday.

Noise Control: Sound barrier walls, 3,000 feet long and 8 feet high were built along the Blue Star Mobile Home Park and the land fill entry road.

Noise monitoring was conducted monthly at 6 locations surrounding the landfill.

The sound barrier walls effectively reduced noise levels in adjacent neighborhoods by three to five decibels.

Ground water Monitoring: Presently, seven ground water monitoring wells and 2 lysimeters were and are monitored quarterly. Five wells and two lysimeters and sampled. In 1993, two new ground water monitoring wells are currently being installed.

| Landfills |

Address:	11950 Lopez Canyon Road Lakeview Terrace, CA 91352
Size:	Property - 399 acres Fill Area - 166 acre
Date Started:	October, 1975
Type of Refuse:	Residential, street sweepings, construction - demolition. No infectious waste, septic tank pumpings, sewage sludge, animal carcasses or hazardous waste.
Total Capacity:	Tonnage (including Disposal areas A, B, AB +, and C) - 19,200,000 tons Remaining Tonnage (in Disposal Area C) - 5,461,000 tons Volume (including Disposal Area A, B, AB +, and C) - 30,720,000 cubic yards Remaining Volume (in Disposal Area C) - 8,738,000 cubic yards
Permitted Maximum Daily Inflow:	400 trucks; 4,000 tons of refuse
1993 Average Daily Inflow:	270 trucks; 3,512 tons of refuse
Average Depth of Fill:	175 feet
Gas Extraction System:	Combination of horizontal and vertical gas extraction wells, gas collection and flaring systems.
Gas Flow:	2,500,000 cubic feet of methane (average)
Improvements:	Crew facilities, water supply system, scale facility, access roads, equipment repair shop, front entrance landscaping with a 2.5 acre park. Load checking for hazardous and radioactive materials, flare station, condensate treatment facilities, fuel station, storm drainage system.
Future Use:	Non-irrigated, low intensity open meadow area intended for passive recreational activity.

Environmental Controls
Emission Control:	Gas flare system has capacity of 8750 cubic feet per minute.
Monitoring:	Monthly sampling, laboratory analyses, and reporting of result of integrated, instantaneous, and ambient air monitoring programs. For a research study, staff is voluntarily monitoring ambient air conditions at four locations adjacent to the landfill on privately owned property. Samples are being taken during three summer months and compared to on-site ambient air monitoring results.
Future Systems:	An energy recovery system has been propose to be built on-site and an agreement with a private firm to finance, construct, and operate an energy recovery system that uses steam boiler technology has been initiated. The private company, Cambrian Energy, would sell electrical power generated at the facility. It is estimated that enough power for 10,000 homes can be generated from Lopez Canyon Landfill gas. The project is in the engineering design stage.
Dust Control:	500,000 gallons per day of water are used to control dust. Watering for dust control occurs between 7:00 a.m. and 5:30 p.m.
Litter Control:	A litter patrol crew of five permanent and six temporary employees remove litter from 11 miles of roads surrounding the landfill every weekday.
Noise Control:	Sound barrier walls, 3,000 feet long and 8 feet high were built along the Blue Star Mobile Home Park and the land fill entry road. Noise monitoring was conducted monthly at 6 locations surrounding the landfill. The sound barrier walls effectively reduced noise levels in adjacent neighborhoods by three to five decibels.
Ground water Monitoring:	Presently, seven ground water monitoring wells and 2 lysimeters were and are monitored quarterly. Five wells and two lysimeters and sampled. In 1993, two new ground water monitoring wells are currently being installed.