Laserfiche WebLink
gn <br /> aq <br /> 70 <br /> CH2M-Hi11 NORCAL <br /> May 10 , 1991 <br /> Page 3 <br /> Following each traverse , we examined the GPR records for ref lean <br /> tion patterns indicative of buried objects.reportThe locations in <br /> of any <br /> anomalies we identified were lottededt <br /> ner <br /> inplanru <br /> viewonaatcomputerhe <br /> field and were subsequently P <br /> drawn map (Plate 1) • <br /> RESULTS <br /> are presented on Plata 1 . This is <br /> The results of the GPR survey the locations of the GPR <br /> a plan view map of the site showing ` the GPR data. <br /> traverses and the anomalous areas resolved by <br /> Significant surface features such as the building and ramp are <br /> shown for reference. <br /> es <br /> t the <br /> our interpretation ottysiQRardidtcontainststeelareinforcconcrete s <br /> reinforcing bars <br /> approximately 5 inches <br /> (rebar) on 3 to 4 inch centers. The cref lecal of und9sturbednnateiveat <br /> the concrete is, in most areas, typ <br /> malies as <br /> soil . We did not identify any reflection patterns characteristic <br /> ve <br /> of UST' n• Platee1 . Theeones anear do rthe lcenter eoflthe osurvey grid <br /> shown o elines. one suspected pipeline trends <br /> are typical of buried t' This alignment <br /> north-south 2 to 3 fee t sdralntsflocatedthe `north and south of the <br /> projects close to fire hydrants <br /> area. Test traverswterrlsneehasean orar eentathonhconsistent owith <br /> indicates that the investigation. Another suspected <br /> that identified in the area of ll of the <br /> pipeline trends last -test from line teeresentsais unknown. However, <br /> The type of facility <br /> it is considerably smaller than the aforementioned w1 . <br /> ater ane. <br /> The locations of both utilities are shown on Plate <br /> in <br /> uthast <br /> The GPR data also resolved ee°lsurveyngraidl (Platete l ) •soThee �ena- <br /> and northwest quadrants of <br /> tore and ese anomalies suggests that Y <br /> localized nature of th <br /> represent buried debris or fil ] areas. <br /> STANDARD CARE AND WARRANTY <br /> The scope of NORCAL' s services for this project consisted of <br /> using GPR measurements of ouprlfindingsore for uarersubjectground storcertaage inks <br /> (UST' s). The accuracy Under unfavorable <br /> limitations inherent to the technigUes used• o undetected. <br /> site conditions, some shallow buried objects may 9 <br /> However, we performed our servicQrcised byin a nme�bersner sOftthe profes- <br /> the level of skillrdinarilyimilar methods. No other warranty, <br /> _employing, - _ - - products -deli <br /> Sion currently __- - - <br /> with respect to the performance of services is made by NORCAL. <br /> under this agreement, expressed or implied, <br />