CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION RESOLUTION NO. R5-2008-0129 AMENDING WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2005-0115 FOR GRANITE CONSTRUCTION COMPANY

Company in Lake County. The Discharger owns and operates a quarry and aggregate processing plant near Lakeport. 2. Finding No. 15 of Order No R5-2005-0115 states: “The Discharger indicates that sediments (silts, and clays) are removed from the settling pond every two months and are stockpiled onsite, just north of the processing plant. These sediments will be used as engineered fill to reclaim previously excavated areas”. The discharge area described in Finding No. 15 is depicted on Attachment B of the WDRs as the “North Overburden Stockpile”. 3. Discharge Specification B.3 states: “The discharge shall remain within the designated disposal area (APN 007-0030-29) at all times.” The cited parcel includes the processing plant area, the aggregate wash water settling pond, and most of the North Overburden Stockpile. 4. On 21 February 2008, Granite Construction Company requested that the WDRs be amended to allow discharge of aggregate wash water fines to an engineered containment area within the West Overburden Stockpile Area, which is not within APN 007-0030-29