COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

WASTE DISCHARGE REQUii.x�MENTS GENERAL ORDER -3- US ARMY CORPS OF ENGINEERS PORT OF STOCKTON MAINTENANCE DREDGING STOCKTON DEEP WATER SHIP CHANNEL CONTRA COSTA, SACRAMENTO, & SAN JOAQUIN COUNTIES 10. The COE will conduct pre-dredging chemical and physical testing of sediments within the ship channel to be dredged before each maintenance project. The purpose of predredging sediment analysis is to demonstrate that the dredging operation (including disposal of dredged sediments), meets the criteria for coverage by this Order and poses no threat to water quality. 11. The beneficial uses of the San Joaquin River are municipal, industrial, and agricultural supply; recreation; esthetics enjoyment; ground water recharge;fresh water replenishment: navigation; fish spawning and migration; and preservation and enhancement of fish, wildlife, and other aquatic resources. 12. The beneficial uses of the ground water are municipal, industrial, and agricultural supply. 13. The Board adopted a Water Quality Control Plan,Third Edition, for the Sacramento River Basin and San Joaquin River Basin (hereafter Basin Plan) which contains Receiving Water Limits for all waters of the Basin. These requirements implement the Basin Plan. 14. The Discharger has submitted information about the probable constituents and their concentrations in the dredge return waters, and about the receiving water. Based on this information the Board finds that the dredge return water discharges will not cause or contribute to a violation of a Receiving Water Limit if sediments contain metals at or below the concentrations listed in A.3, below. When sediments exceed these concentrations, site specific studies are needed to assure compliance with receiving water limits (RWLs). 15. The dredge return water discharges are consistent with the antidegradation provisions of 40 CFR 131.12 and SWRCB Resolution 68-16. The Order allows for an increase in the discharge of pollutants,mainly sediment and metals, that may lead to degradation of water quality. The nature of the discharge is such that the degradation can only occur during limited periods and will be localized. The discharge of pollutants will not cause a violation of Receiving Water Limits nor impairment of beneficial uses. Additionally, the discharge is necessary to accommodate economic expansion in the area and the activity the discharge allows is a benefit to the people of the state. 16. The Port adopted a Class I Categorical Exemption as an existing facility in accordance with the California Environmental Quality Act (Public Resources Code Section 21000,et seq.), and the State Guidelines. The COE has prepared an Environmental Assessment for the project to supplement their original Environmental Impact Statement prepared for previous dredging of the channel. 17. Pre-dredge testing and, when necessary, site specific studies will assure that dredge sediments will not contain hazardous waste or soluble pollutants at concentrations in excess of applicable Receiving Water Limits, and will not contain significant quantities of decomposable waste. The dredge sediments will be classified as Inert Waste as defined in Section 2524(a) of Title 23 Chapter 15. Inert wastes do not need to be discharged at classified waste management units and the Board may prescribe individual or general waste discharge requirements.