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California Regional Water Quality Antrol Board <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Alan C.Lloyd Ph.D. Arnold Schwarzenegger <br /> Agency Secretary Sacramento Main Ofllee Governor <br /> Internet Address: http://www.swrcb.ca.gov/—mgcb5 <br /> 11020 Sun Center Drive,#200,Rancho Cordova,CA 956706114 <br /> Phone(916)464-3291•FAX(916)464-4780 <br /> 7 June 2005 nMDOVED <br /> Carl Ryalls JUN - 9 2005 <br /> California Nuggets ENVIRONMENT HEALTH <br /> 23073 S. Fredrick Road PERMIT/SERVICES <br /> Ripon, CA 95366 <br /> CONDITIONAL APPROVAL, WORKPLAN, BASELINE GROUNDWATER QUALITY <br /> ASSESSMENT, CALIFORNIA NUGGETS,RIPON,SAN JOAQUIN COUNTY <br /> I have reviewed the Workplan, Baseline Groundwater Quality Assessment, California Nuggets, Inc., <br /> prepared by Kleinfelder, Inc. dated 29 April 2005. The workplan was prepared as part of preparation of <br /> a Report of Waste Discharge (RWD). <br /> After reviewing the workplan, I have the following comments: <br /> — Please reconsider the well construction. Section 4.2 states that a 15-feet long well screen will be <br /> placed so that 10-feet of the screen extends below the water table. If floating phase liquids are not <br /> anticipated to exist at the site it may be beneficial to set the well screen slightly deeper to minimize <br /> the likelihood of the wells going dry later in the year when the regional water table may be lowered <br /> by groundwater pumping or seasonal fluctuation. <br /> — The well construction described in Section 4.2 includes a 15-feet long screen; Plate 3 indicates the <br /> well screen will be 10-feet long. Please clarify the proposed well construction and revise Plate 3 as <br /> needed. <br /> — The three- to five-feet thick transition seal may be excessive. Consider limiting the transition seal to <br /> a two- to three-feet thickness. <br /> — Section 5.1 lists the proposed analytes selected to characterize groundwater quality. Please add <br /> chloride to the list. If the facility uses sanitation chemicals that contain chlorine, add chlorine and <br /> trihalomethanes to the list. The response to this conditional approval must state what sanitation <br /> chemicals are used at the facility. <br /> — Figure 2 proposes installation of three wells based on an assumed groundwater flow direction to the <br /> west. Because Figure 2 is not drawn to scale, it is difficult to determine how close the wells are to <br /> site features. The proposed location of Well MW-1 is acceptable; please locate Wells MW-2 and <br /> MW-3 closer to the wastewater ponds. The wells should be installed within approximately 30 feet of <br /> the ponds. In addition please add a fourth well in close proximity to, or within the land application <br /> area. <br /> California Environmental Protection Agency <br /> Co Recycled Paper <br /> W:\SWI\Obnen'M1San Joaquin\U'I Nu88euNYal6 Jlura 115 Eoc <br />