Waimanalo Gulch Landfill & Ash Monofill

The operating hours for Waimanalo Gulch Landfill Ash Monofill are as follows: Monday: 7:00 AM – 4:30 PM · Tuesday: 7:00 AM – 4:30 PM · Wednesday: 7:00 AM – 4:30 PM · Thursday: 7:00 AM – 4:30 PM · Friday: 7:00 AM – 4:30 PM · Saturday: 7:00 AM – 4:30 PM · Sunday: 7:00 AM – 4:30 PM. These hours are subject to change on holidays or due to weather conditions. We recommend contacting the facility directly at (808) 668-2985 before your visit to confirm current hours, especially if you are planning to drop off waste outside of typical business hours.

Waimanalo Gulch Landfill Ash Monofill is located at 92-460 Farrington Hwy, Kapolei, HI 96707, USA, 96707. The facility is situated in Honolulu County. Use the map on this page or enter the address into Google Maps or Apple Maps for turn-by-turn navigation. Call ahead at (808) 668-2985 for access instructions or gate codes if required.

As of 2022, Waimanalo Gulch Landfill Ash Monofill has approximately 13,141,443 tons of waste in place. The total design capacity of the facility is 21,826,964 tons, and it is currently at approximately 60% of its design capacity. The facility accepts approximately 228,086 tons of waste per year. The facility is projected to reach capacity and close around 2039.

Waimanalo Gulch Landfill Ash Monofill currently covers approximately 115.8 acres with a depth of approximately 100 feet. The facility opened in 1989 and has been in continuous operation since then. The size of a landfill reflects both its operational history and the volume of waste it has processed over its lifetime of service to the surrounding community.

Waimanalo Gulch Landfill Ash Monofill has an active landfill gas (LFG) collection system in place. The facility generates approximately 2.0 million standard cubic feet per day (mmscfd) of landfill gas. Of that, approximately 1.1 mmscfd is collected by the system. The gas contains approximately 46.8% methane, which can be captured for energy generation. The facility operates 61 gas collection wells. Flares are in place at this facility. LFG collection reduces greenhouse gas emissions and, in some cases, generates renewable energy for the grid.

Waimanalo Gulch Landfill Ash Monofill participates in the following environmental programs: an LFG energy project with status 'Candidate' is associated with this site. These initiatives help reduce the environmental footprint of landfill operations by capturing resources, reducing greenhouse gas emissions, and diverting material from direct disposal. Contact the facility or its operator for more details on current environmental compliance status.

To contact Waimanalo Gulch Landfill Ash Monofill, call (808) 668-2985. The mailing address is 92-460 Farrington Hwy, Kapolei, HI 96707, USA. The directory information shown on this page is sourced from the EPA Greenhouse Gas Reporting Program (GHGRP) and the USDA Agricultural Marketing Service, last verified as of data year 2022. Data freshness status: Current. If you are the facility owner or operator and need to update this listing, use the claim listing option on this page.