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F TRODUCTION port presents the results and findings of the Nitrate Loading Study and Soil Suitability onducted for the proposed project. Mr. Louis Ceci is proposing to develop a Recreational e(RV) and Boat Storage facility south of the City of Tracy. For the past eleven years, Mr. Ceci has owned a similar facility in the City of Fremont. He has supplied information on patron bathroom usage from the "Bay Storage" Fremont facility (See attached). City of Tracy water and sewer systems do not extend to this project and probably will never do so. Therefore, an on-site well and septic system must be installed. The project is 300 feet south of the intersection of Linne Road and MacArthur Drive at 28822 South MacArthur Drive. The Assessor's Parcel Number is 253-090-14. The San Joaquin County Environmental Health Department (EHD) requires Nitrate Loading and Soil Suitability Studies for projects in unsewered and currently nitrate-impacted areas, or for projects which may potentially impact the underlying groundwater with nitrate. This report complies with the San Joaquin County Development Title, Section 9-1105.2 for a Nitrate Loading Study and Soil Suitability Study. Additionally,this proposed project must comply with the Environmental Health Department Sewage Standards, specifically Section 10: "Requirements for Waste Disposal for New Land Developments." The primary concern of nitrate in drinking water is that high concentrations can cause methemoglobinemia in infants and it can also induce abortion or death in cattle. This disease occurs through a series of complex chemical reactions within the hemoglobin in the blood. Only infants and young children are susceptible. Although this disease is extremely rare, nitrate can also potentially cause other health concerns. Scientific studies suggest nitrate may produce carcinogenic effects in humans. Nitrate concentrations in water can be expressed in two different terms: 1.) as the weight of the nitrate molecule, which is one atom of nitrogen and three atoms of oxygen for an atomic weight of 62 units. Or, 2.) nitrate can be expressed as the amount of the nitrogen atom itself. This one atom of nitrogen(N) in a nitrate molecule contributes 14 atomic weight units to the weight of the nitrate molecule. The ratio of weight of the nitrate molecule (NO3)to the atom (1) is 62/14 or approximately 4.5. The U.S.E.P.A. has established the Maximum Contaminant Level (MCL) of nitrate in drinking water at 45 mg/l as nitrate. Due to the ratio described above,the MCL is sometimes reported as 10 mg/1 as nitrate-nitrogen. H. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION The subject property has been vacant for many years and there is no evidence of a building that was ever on the property. It is bound to the west by the Granite Constriction Company Gravel Pits,to the east by commercial and industrial businesses,to the south by defunct gravel pits and agricultural production land (mainly walnuts and pasture), and to the north by a tractor-trailer parking area for the Yandell Trucking Co. Page -1- Chesnq Consulting