Between 2003 and 2004, soil and groundwater sampling were conducted to assess the extent and origin of a perchlorate release to a sand and gravel aquifer at an Army Na- tional Guard training facility. The release area is adjacent to a site used for eight years as the launch pad for a small town's annual Fourth of July fireworks display. Surface soil sampling conducted downwind of the launch area before and after the July 5, 2003 fire- works event showed only trace concentrations (less than 10 ug/Kg) of perchlorate days prior to the event and concentrations at the same locations as high as 7 mg/Kg the day after the event. Five months later, soil samples collected from the locations with the highest perchlorate concentrations showed no detections of perchlorate. Samples of paper fireworks debris collected in the vicinity of the soil samples four months after the 2003 fireworks event showed perchlorate concentrations up to 34,000 mg/Kg. The fire- works debris was collected from the same area as the soil samples with the highest per- chlorate concentrations.
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机译：在2003年至2004年期间，进行了土壤和地下水抽样，以评估在军队国家警卫训练设施的沙丘释放到沙子和砾石含水层的程度和起源。释放区域与用于小镇年度烟花展示的小镇年度第四次的发射垫相邻的网站。表面土壤采样在2003年7月5日之前和之后进行的发射区下风，在事件发生之前只显示痕量浓度（少于10 UG / kg），在同一地点处的浓度高达7事件后一天的mg / kg。五个月后，从具有最高高氯酸盐浓度的地点收集的土壤样品显示出高氯酸盐的检测。 2003年烟花事件的2003年烟花事件后四个月收集在土壤样品附近收集的纸烟花碎片，均为高达34,000毫克/千克的高氯酸盐浓度。作为具有最高氯酸盐浓度的土壤样品，从与土壤样品相同的区域收集火灾碎片。
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