COMPLIANCE INFO_1993 - 1994 - Laserfiche WebLink

Home Browse Search

y 4 JOHNS-MANVILLE MANUFACTURING, INCORPORATED -1- ' JOHNS-MANVILLE ASBESTOS/CEMENT PIPE CORPORATION FORMOSA PLASTICS, USA SURFACE IMPOUNDMENTS AND UNCLASSIFIED LANDFILLS SAN JOAQUIN COUNTY INFORMATION SHEET Twelve landfills and two surface impoundments at the Johns-Manville Manufacturing Company facility were used for the disposal of asbestos and production-related waste from 1957 until 1979. The facility is currently unregulated, as previous WDRs and NPDES permits were rescinded by the Board when the Discharger closed its asbestos/cement (A/C) pipe manufacturing process in 1983. PVC pipe is still being produced at the facility, but the process is a completely closed system where all of the water is recycled and no process wastewater is generated. Currently, the only wastes discharged to surface impoundments are water from an air compressor after-cooler and condensation water from the office air conditioning system. The facility ceased placing waste in the landfills prior to approval of the 1984 version of Chapter 15 regulations; however, the facility was not closed in accordance with an approved closure plan. Additionally, elevated levels of asbestos have been found in nearby surface waters. This order includes provisions that require the Discharger to submit engineering feasibility and corrective action programs and requires development of a monitoring program pursuant to Article 5 of Chapter 15. Native soil, placed over the landfill areas in 1987, has eroded or cracked in many places and is not acceptable for long term cover. The present state of the landfills may have allowed asbestos wastes to be discharged into surface waters. While the cover is not required to meet any permeability requirement, the Discharger will construct a three foot cover which will be designed to prevent erosion from storm waters. The Discharger has proposed to close the landfills in a three phased approach. In Phase I, the drainage from the capped landfill areas is directed through either small channels or swales to the main channel where the runoff will be discharged. Periodic monitoring will occur at these discharge points to determine if the concentration of asbestos fibers exceeds�the numerical water quality objective for sources of drinking waters of 7 million fibers per liter for fibers greater than 10 microns in length. If the water quality objective is exceeded, Phase 11 will be implemented. In Phase II, the drainage from the landfill areas will be collected and routed through sedimentation basins to reduce the amount of asbestos in the water discharged to the channel. Monitoring activities will still occur although the emphasis will be to determine if channel sediments are adding asbestos to surface water. The effectiveness of the sedimentation ponds