ARCHIVED REPORTS XR0006250 - Laserfiche WebLink

Home Browse Search

Protect No 014-95262 Page No 11 detected at a concentration of 300µg/L, benzene and toluene were detected dust above detection limits, at concentration of 0 8 Mcg/L each With respect to EC and chloride, analytical results for samples KHP-7 and KHP-8 located southeast of the main facility building are similar to background Sample KHP-1, at the brine spill area, exhibited an EC approximately double that of background and chloride 3 to 4 tunes that of background Samples KHP-3, KHP-4, and KHP-5, from the vicinity of the wastewater treatment pond, exhibited EC concentrations 3 to 4 times background and chloride 3 to 6 tines background Sample KHP-9 exhibited g P an elevated EC value yet non detected chloride Nitrate was detected at low concentrations in samples from KHP-1 and KHP-2 on the western portion of the property, and at KHP-7, southeast of the main building Nitrate was not detected in samples from the vicinity of the treatment pond or in samples from KHP-8 or KHP-9 Ammonia, conversely, was detected at low concentrations at locations KHP-4 and KHP-5 east, and recently hydraulically down- gradient, of the treatment plant and pond Ammonia was not detected elsewhere on site Phosphate concentrations were low and not attributable to known potential point sources Sulfate e concentrations were an order of magnitude higher in samples from the west and northwest portion of the site (KHP-1 and KHP-2) than at other locations analyzed The highest sulfate concentration noted (110 mg/1) is one-half the secondary MCL value of 250 mg/L The reason for variable sulfate concentrations is not known pH ranged from 7 6 to 8 5 with no apparent relationship to potential source areas TRPH was not detected in any sample analyzed for this constituent VOCs, which include chlorinated compounds such as trichloroethylene (TCE) and tetrachloroethylene (PCE) in addition to the BTEX compounds, were analyzed at all locations except KHP- 4 Six of eight locations exhibited very low concentrations of one to two specific compounds with all other compounds being non detected The specific compounds detected were benzene, toluene, bromoform and 1,2,4-trunethylbenzene, all of which were detected at very near their detection limits The MCLs for the above constituents were not exceeded TPH-D was analyzed in six of nine groundwater samples TPH-D was detected in the northern ' portion of the property (KHP-2 and KHP-3) and at the southeast edge (KHP-8) at moderate concentrations (300 to 420µg/L) The remaining locations KHP-6, KHP-7, and KHP-9, located both northeast and west of the former Safeway USTs, returned TPH-D concentrations 3 to 4 times greater, in the range of 1100 to 1200 ,ug/L One sample (KHP-9) was also analyzed for semi-volatile organic constituents Constituents which can be detected by this method include polynuclear aromatic hydrocarbons (PAHs), certain organochlorine KRAZAN &ASSOCIATFS, INC. Offices Serving the Western Unrted Stales 95262 M