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25 November 2015 AGE Project No. 15-3594 Page 14 of 26 3 . 3 .2 .3 , Orphan Site Listings The orphan summary list consists of sites lacking sufficient information for EDR to map their locations . Five (5) sites are listed as 'orphan : ' none of the orphan sites appear to be adjacent to or on the subject property. Based on distance from the subject property, AGE found no indication from the EDR report that the orphan sites are of environmental concern to the property. 3 . 4 . ADDITIONAL ENVIRONMENTAL AGENCY RECORD SOURCES In addition to the EDR computer search of federal , state and regional regulatory agency databases , AGE contacted appropriate regulatory agencies to review records regarding the property and surrounding sites identified as having recognized environmental conditions that have the potential to impact the subject property based on ground water flow direction , distance from the subject property and nature of the releases causing the environmental condition . Additional agency searches include the following : • The San Joaquin County Environmental Health Department (SJCEHD) and the Central Valley Regional Water Quality Board (Regional Board) maintain records of industrial violations for this area and are the lead agencies for the enforcement of the State Underground Storage Tank and Hazardous Waste Laws for San Joaquin County . AGE requested to review any files that were available . • The Regional Board also maintains and online computer database , GeoTracker, that provides listings of closed and active sites related to unauthorized releases of hydrocarbons as well as solvents, metals , and other materials . For listed sites , online reports are commonly available . AGE reviewed the GeoTracker database for information that may be available for the subject property or surrounding sites . • The California Department of Toxic Substances Control (DTSC) is the State of California agency responsible for oversight of hazardous waste regulations , cleanup of existing contamination , pollution prevention and reduction in hazardous waste and toxic materials and identification of potential new pollutants . The DTSC maintains the EnviroStor Data Management System (ENVIROSTOR) which allows for the search for information on investigation , cleanup , permitting and/or corrective actions that are planned , being conducted or have been completed under DTSC oversight. AGE reviewed the ENVIROSTOR database for any information that may be available . • The United States Environmental Protection Agency (USEPA) provides an online computer database , ENVIROFACTS , providing lists of sites listed on multiple USEPA databases . AGE reviewed the ENVIROFACTS database for any information that may be available . Advanced GeoEnviromoentnl, Inc.