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ORDER NO.R5-2003-0099 3 INFORMATION SHEET NEWPORT PACIFIC CAPITAL COMPANY ARBOR MOBILE HOME PARK WASTEWATER TREATMENT FACILTY SAN JOAQUIN COUNTY • The background quality of the uppermost layer of the uppermost aquifer; • The background quality of other waters that may be affected; • The underlying hydrogeologic conditions; • Waste treatment and control measures; • How treatment and control measures are justified as best practicable treatment and control; • The extent the discharge will impact the quality of each aquifer; and • The expected degradation below water quality objectives. In allowing a discharge, the Regional Board must comply with CWC section 13263 in setting appropriate conditions. The Regional Board is required,relative to the groundwater that may be affected by the discharge, to implement the Basin Plan and consider the beneficial uses to be protected along with the water quality objectives essential for that purpose. The Regional Board need not authorize the full utilization of the waste assimilation capacity of the groundwater (CWC 13263(b)) and must consider other waste discharges and factors that affect that capacity. The Discharger has not supplied the above information and therefore this Order does not allow the groundwater to be degraded. Although this discharge has been occurring for years, the groundwater has not yet been monitored to determine if the discharge has caused an impact. In addition, certain aspects of waste treatment and control practices have not been and are unlikely to be justified as representative of best practicable treatment and control (BPTC). Reasonable time is necessary to gather specific information about the discharge and to make informed, appropriate, long-term decisions. Because the Discharger has not demonstrated that the treatment and disposal of the wastewater meets the criteria of Resolution No. 68- 16, this Order states that no degradation of the groundwater is allowed. The Discharger is required to implement groundwater monitoring, and if degradation is detected, then will be expected to identify and implement BPTC practices to minimize or prevent the degradation. Monitoring Requirements Section 13267 of the CWC authorizes the Regional Board to require monitoring and technical reports as necessary to investigate the impact of a waste discharge on waters of the state. In recent years there has been increased emphasis on obtaining all necessary information, assuring the information is timely as well as representative and accurate, and thereby improving accountability of any discharger for meeting the conditions of discharge. Section 13268 of the CWC authorizes assessment civil administrative liability where appropriate. The proposed Order requires certain influent and effluent monitoring as well as groundwater monitoring. In order to adequately characterize its wastewater effluent, the Discharger is required to monitor for settleable solids, total suspended solids, BOD, TDS, and nitrogen compounds. Standard minerals monitoring is required on an annual basis.