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TABLE OF CONTENTS <br />(Continued) <br />4.3.3 Geology and H dr eo! <br />4.3.4 Wetlands and Floodplain ... ............................... ............................................ 20 <br />4.3.5 Oil and Gas Fields......................................... .. <br />4.4 HISTORICAL USE INFORMATION ON THE PROPERTY............................................. 21 <br />4.4.1 Aerial Photographs................................................................... <br />4.4.2 Sanborn Maps .......,........................................................... <br />4.4.3 Historical Topographic Maps .. <br />4.4.4 Additional Resources.......................................................................I...... 23 <br />5.0 SITE RECONNAISSANCE........................................................... <br />.... .24 <br />5.1 METHODOLOGY AND LIMITING CONDITIONS........................................................... 24 <br />5.2 GENERAL SITE SETTING....................... ................................... .24 <br />5.3 EXTERIOR OBSERVATIONS...... ........................................................................... 25 <br />5.3.1 Hazardous Substances, Drums, and Other Chemical Containers ........... 25 <br />5,3.2 Storage Tanks........................................................................................ 25 <br />5.3.3 Polychlorinated Biphenyls (PCBs)........::....,.......................:................... 25 <br />5.3.4 Waste Disposal................... .. 25 <br />5.3.5 Dumping................................:............,.......... <br />5.3.6 Pits, Ponds, Lagoons, Septic Systems, Wastewater, Drains, Cisterns, and <br />Sumps..................................................................................................... 26 <br />5.3.7 Pesticide Use.........................................................................:...............26 <br />5.3.8 Staining and Discolored Soils................. .........:.............................:..:... 26 <br />5.3.9 Stressed Vegetation.............................................................................. 26 <br />5.3.1 D Unusual Odors............:..................................................................... <br />..... 26 <br />5.3.11 Onsite Wells........................................................................................... 27 <br />5.3.12 Asbestos and Mold.........................................._............................::. <br />... 27 <br />5.3.13 Lead-Based Paint.................................................................. <br />6.0 INTERVIEWS....................................................................................................... 28 <br />6.1 INTERVIEW WITH OWNER..................................................................................28 <br />6.2 INTERVIEW WITH SITE/PROPERTY MANAGER ..................................................... 28 <br />6.3 INTERVIEW WITH OCCUPANTS........................................................................... 28 <br />6.4 INTERVIEWS WITH LOCAL GOVERNMENT OFFICIALS............................................ 28 <br />6.5 INTERVIEWS WITH OTHERS................................................................................28 <br />7.0 FINDINGS..............................................................................................................29 <br />ENV. ..I <br />g N[ s I t FINAL <br />PHASEIESA <br />COLTON, CALIFORNIA <br />April 2004 <br />P.Vmj..LlVVrsYC.M� I�k"M1Rni..J Ei lI P1.... MMKE FYr1 Pn.s1 MnY120G51Rw4M FN.l. P Ki 1 EM c(xTo*"A1ipQoD&ftC <br />