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Linne Estates, LLC - 2 - 21 October 2002 Storm Water Associated With Construction Activity. Before construction begins, the proponent must submit an NOI to comply with the permit to the State Water Resources Control Board and an SWPPP must be prepared. Water Quality Certification- Wetlands If a U.S. Army Corp of Engineers (ACOE)permit is required due to the disturbance of wetlands,then Water Quality Certification must be obtained from the Regional Board prior to initiation of project activities. Section 401 of the federal Clean Water Act requires that the project proponent for any project that impacts surface waters of the United States (such as streams and wetlands) must request a 401 Water Quality Certification from the Regional Board. Water Quality Certification must be obtained prior to initiation of project activities. The proponent must follow the ACOE 404(b)(1) Guidance to assure approval of their 401 Water Quality Certification application. The guidelines are as follows: 1. Avoidance (Is the project the least environmentally damaging practicable alternative?) 2. Minimization(Does the project minimize any adverse effects to the impacted wetlands?) 3. Mitigation (Does the project mitigate to assure a no net loss of functional values?) Dewatering Permit The proponent may be required to file a Dewatering Permit covered under Waste Discharge Requirements General Order for Dewatering and Other Low Threat Discharges to Surface Waters Permit, Order No. 5-00-175 (NP=_ DE, A 19 5001)_ The following discharges may be covered by this permit provided they do not contain significant quantities of pollutants an=in— 1) four months or /�/�► less in duration, or(2)the avera e dry weather discharge does not excee W a. Well development water b. Construction dewatering c. Pump/well testing d. Pipeline/tank pressure testing e. Pipeline/tank flushing or dewatering f. Condensate discharges g. Water Supply system discharges h. Miscellaneous dewatering/low threat discharges Industrial Stormwater Permit Depending on the Standard Industrial Classification (SIC) code of the final project, compliance with the NPDES General Permit No. CAS000001 for Discharges of Storm Water Associated With Industrial Activities may be required. The SIC codes of activities requiring coverage are listed in the General Permit. In order to obtain coverage by the General Permit, the proponent must submit a Notice of Intent to comply with the permit (NOI) to the State Water Resources Control Board and a Storm Water Pollution Prevention Plan(SWPPP) must be prepared. Section 404 Permit If the project will involve the discharge of dredged or fill material into navigable waters or wetlands, a permit pursuant to Section 404 of the Clean Water Act may be needed from the US Army Corps of Engineers. If a Section 404 permit is required by the Corps, the Board will review the permit application to ensure that discharge will not violate water quality standards. If the project requires surface water V:\San_Joaquin_NonlSStaff.ObrienTProject Files\Misc.COR\StateClearmghouseUolley102102.doc