SU0000093 SSC RPT (2) - Laserfiche WebLink

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k4 KLEINFELDER 3) There are multiple active wells located on site. The on-site active wells are currently used to supply water for agricultural use and used for domestic purposes. If the intended uses of the wells will change (i.e. from irrigation use to supply drinking water) Kleinfelder recommends that the well be sampled and water analyzed in accordance with the intended use. If the on site wells are to be abandoned, Kleinfelder recommends proper abandonment in accordance with local, state and federal regulations. 4) Wood debris, scrap metal, and other miscellaneous debris are located in areas throughout the subject site and should be properly disposed. If evidence of contamination is discovered, the signatories of this report should be contacted. 5) Surface stains were noted on the subject site. The oil stains were primarily located underneath heavy equipment. The soil staining appears to meet the definition of a "de minimus" condition under ASTM. Therefore, no sampling is recommended. However, it is suggested that efforts be made to reduce future leaks. 6) Drums were present on the subject site. Soil staining in these areas was not noted. If continued use of the drum contents is necessary, the drums should be relocated to an appropriate storage area (i.e. paved area with containment to catch spills). If the contents of the drums are not needed on site, then the drums and contents should be disposed. 7) Multiple above ground storage tanks (ASTs), some empty, some used for storage of water, diesel and oil are present on site. There is no soil staining visible associated with the ASTs. Above ground storage tanks storing diesel and oil should be equipped with secondary containment. Portable AST's should be stored in an area with secondary containment when not in use. If the amount of petroleum products meets the threshold of 660 gallons per tank or 1,320 gallons per facility, an AST permit is required. 8) Chemical storage containers and other hazardous materials were found on site. Said items should be properly disposed if not in use. Additionally, the quantities of hazardous materials (i.e. compressed gas, waste oil, etc.) on site may trigger permitting requirements. The local fire department and/or PHS/EHD should be contacted for guidance. 9) A septic system is located on site, south of the residence. The purpose of the septic system is to receive domestic sewage. It is common to find that unauthorized or unintended discharge to septic systems of hazardous materials or petroleum products has occurred. If the septic system is to be abandoned, soil samples can be collected in the vicinity of the septic tank and leach lines to evaluate potential hazardous materials discharge to the septic system. 10)The dairy on site discharges waste water to surface impoundments. According to the property owner, the surface impoundments were constructed with a 10 percent clay liner and operate under waste discharge requirements (WDRRs) issued by the RWQCB. 20-4322-0I TO1/2019R547 Page 21 of 23 Copyright 1999,Kleinfelder,Inc. .lune 28, 1999