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Mr. Curtis Fujii -2 - 27 October 2005 <br /> Mr. Robert McClellon <br /> guidance in determiningwhether a waste is designated for the constituents presented. Due to the depth <br /> to groundwater and the types of vadose zone soils beneath the Forward facility, the "High" attenuation <br /> levels on this chart would be appropriate. Designated levels for other constituents not called out in <br /> WDRs or noted in the recommended limits table may be calculated using the formula on page 3 of the <br /> attached letter and the water quality limits published on the Region 5 website at <br /> http://www.waterboards.ca.gov/centralvalley/available_documents/index.html#WaterQualityGoals. <br /> This guidance should be viewed as a starting point. Characteristics of each site will determine which <br /> wastes can safely be discharged to a Class III unit and which wastes must be discharged only in a Class <br /> II unit. <br /> Regional Board staff understands that not establishing designated levels for most constituents in <br /> facility WDRs has resulted in a level of misunderstanding. To resolve this we propose to revise the <br /> facility MRP to incorporate the recommended limits. The MRP can be revised without a public <br /> hearing so this could happen fairly quickly. Until the revision can be completed, all parties should <br /> treat the recommended limits as designated levels. Forward should propose to the Regional Water <br /> Board any changes to the recommended limits with justification by 1 December 2005. <br /> If you have any questions, please call me at(916)464-4614. <br /> ROSS D. ATKINSON <br /> Associate Engineering Geologist <br /> cc: Mr. Geno Yekta, CIMWB, Sacramento. <br /> Mr. Lochlin Caffey, Forward Inc. Stockton <br /> RDA;C:\MyDocuments\Forward\desigW steC]ass.doc <br />