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Print W data acquisition, the G858 was programmed with We appropriate sampling imen,ad and CPS input aeltwgs. The magmmonster was then tied to the Spectra Precision CPS system for spatial control. Spatial information was sent to the console at I secomp intervals using a GGA hIMEA stream. Magnetic data and spatial dam were downloaded o a laptop computer at the end of the survey using the program MAGMAP 2000 by Geometries, pre. Perm, on the geophymed method can he found in the attached technical note tilled "Magnetic Method" DATA PROCESSING Color-enhanced contour maps of the magnetic data were generated using the GEOSOFI'h Oasis mum j -red geophysical mapping system. The maps were color- enhanced m aid in We imerpreamin ofsubtle anomalies. Prior map generation, a numberofpreptio essing steps were completed and mcluded: • 1 raderp mall original Geld data lips; m computer. • Cmrese ing of all dam awuisihan errors (typically removing null data and carounalsous; GPS points). Ref ro matting field data files in free parent XYZ File containing at a minimum CPS time and field msamremenll. Merging CPS position data and geophysical dam using commuuial and in-house Merging nfofdamle dam files into a single file sad setting, ifveressury. - Converting of dam files ill Sulc Plan oorthings and casting. These data adjustments were made using a combination ofcommemial and in-house software. All adjustments made m dma files and resulting file rwrn were documented and are retained in project files. The output of the dais preprocessing was a data fide comtaining the maguefic tout field pone. Iola processing steps iaclwled the following: Reformatting of data files lv GEOSOFT format. Ge semnig final map scale (mudding dais using down- and crncclwe splines or minimum complain. Masking grid in areas where data not acquired (i.e. around site perimeter or building). Applying llanning filed to smooth rise dam, as necessary. • Generating color zone the des¢Bing color fix thferom data mama, • Conmuriug the data. • Claiming map summands (title hlwk, legend, scaly odor bar, north small, ram.). • Anrmmting anomalies. • Merging various plot files and pinning final map. I loe names of the files permitted and the possessing parameters used were documented and are retained in project files. All files generated during the Pimcessivg sequence were archived on a backup drive. 112401pulk Dr., Cams, Cu 9101 ph. 951-5441234 f 951-54slI23e rvrviesss�rw .ro�x