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26 July 2001 AGE-NC Project No.01-0852 Page 13 of 22 EDR also conducted a search of state databases to identify,ground water wells within 1 mile of the subject property. Active sites on the NPL,BEP/AWP and TOXIC PITS lists located within a 1-mile search distance from the subject properties are of potential environmental concern to the property. Active sites within a V2-mile search distance on the remaining lists (excluding CAL-SITES,ERNS and CHMIRS)are also ofpotential concern,although hydrocarbon-impacted sites more than 1/4 mile away are generally not likely to impact the subject property except under unusual circumstances. Recent studies suggest that petroleum hydrocarbons leaking from under ground fuel tanks rarely travel more than 250 feet from the point of release (Lawrence Livermore Laboratory, 16 October 1995),which minimizes the potential of sites with these type of releases to adversely impact down- gradient properties;however, oxygenated fuel additives (i.e.,methyl tert-butyl ether-MTBE)have recently been documented to migrate greater distances than petroleum hydrocarbons. .� CERCLIS sites .designated "No Further Remedial .Action Planned" (NFRAP) are sites where, following an initial investigation,no contamination was found,contamination was removed quickly without the need for the site to be placed on the NPL,or the contamination was not serious enough to require Federal Superfimd Action or NPL consideration. Such sites are generally not likely to impact the subject property. Sites on the CAL-SITES database were typically listed following.a visual observation made by Cal-EPA during a drive-by-survey and do not necessarilypose an environmental concern.Only CAL- SITES listings adjacent to the property are noted.The ERNS and CE1IIRS are lists of unauthorized. releases of oils and hazardous substances,typically from spills.Many spills are minor in nature.Only significant 4ills or spills on adjacent properties are noted. Sites with permits to operate underground storage tanks,handle/store/transfer hazardous materials and generate hazardous waste are listed on the database report. However, it does not neFessarily imply that these sites have impacted the environment.The total number of sites with permifs within a 1/4-mile search distance of the property is noted with emphasis on the immediately adjacent permitted sites. .i Sites with environmental conditions that surround the subject property are typically of concern to the subject property when they are located in an up-gradient direction from the subject property with respect to the ground water flow direction. Typically, ground water would represent the migration medium for contaminants over significant distances.Sites located in equi-gradient or down-gradient directions from the property are less likely to impact the property. The ground water flow beneath the subject property appears to be toward the south/southeast, but the flow direction may vary locally.