SITE INFORMATION AND CORRESPONDENCE

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WASTE DISCHARGE REQUI*ENTS NO. 5-01-114 -6- PILKINGTON NORTH AMERICA,INC. PILKINGTON GLASS FURNACE FACILITY SAN JOAQUIN COUNTY Constituent Units Well J Well K Well L Sulfate mg/1 28 16 22 Alkalinity(CaCO3) mg/1 280 190 240 Sodium mg/l 55 43 39 39. Excessive application of wastewater to land application areas can create objectionable odors, soil conditions that are harmful to crops, and degradation of underlying groundwater by overloading the shallow soil profile and causing pollutants (organic carbon,nitrate, other salts, and metals) to percolate below the root zone. Cropping in land application areas takes up nitrogen and some salts, thereby helping to protect groundwater quality. 40. The Board has considered anti-degradation pursuant to State Board Resolution No. 68-16 and finds that degradation of groundwater by this discharge is not consistent with maximum benefit to the people of the State. The assimilative capacity of the underlying soil when combined with a crop, should prevent degradation of groundwater from infiltration of waste constituents. The effluent and groundwater limits prescribed herein are intended to ensure that the assimilative capacity will not be exceeded. However, groundwater monitoring wells are necessary to fully determine compliance with the groundwater limitations contained herein. Therefore, these WDRs contain a time schedule for development and implementation of a groundwater monitoring program, as well as a time schedule for the planting of crops. 41. Surrounding land uses are residential, agricultural, and industrial. 42. The site lies within the San Joaquin Valley Floor Hydrologic Unit No. 544, as depicted on interagency hydrologic maps prepared by the Department of Water Resources in August 1986. 43. The Board adopted a Water Quality Control Plan, Fourth Edition, for the Sacramento River and San Joaquin River Basins (hereafter Basin Plan), which contains water quality objectives for waters of the Basins. These requirements implement the Basin Plan. 44. Surface water drainage is to the San Joaquin River. 45. The beneficial uses of the San Joaquin River are domestic water and agricultural water supply, industrial and service supply, contact and non-contact recreation, warm and cold freshwater habitat, wildlife habitat and warm water spawning, warm and cold water migration, and navigation. 46. The beneficial uses of the groundwater are municipal, agricultural, industrial service supply, and industrial supply. 47. The action to update waste discharge requirements for this facility is exempt from the provisions of the California Environmental Quality Act (CEQA), in accordance with Title 14, California Code of Regulations (CCR), Section 15301. 48. This discharge is exempt from the requirements of Consolidated Regulations for Treatment, Storage, Processing, or Disposal of Solid Waste, as set forth in Title 27, CCR, Division 2, Subdivision 1, Section 2005, et seq., (hereafter Title 27). The exemption pursuant to Section 20090(b), is based on the following: