[tag=□ | □] □
[tag=VBD | □] □
[tag="," | □] □
In order to establish the rural thresholds for each region , we examined levels of the PII in areas that clearly had not been subject to nonfarm-related population influence . When Wright measured glomalin in soil aggregates she found levels as high as 2 % of their total weight in eastern U.S. soils . Nineteen patients who completed 6 months of treatment with CTF still had levels of HCV similar to those they had when treatment began . The Canadian government found levels of arsenic up to 80 ppm and averaged 50 ppm under play structures , while control soils average less than 1 ppm ( HWC 1992 ) . Others , including the Diana Ross Playground in Central Park at 81st St ., had levels high enough to increase a child 's risk of developing cancer to about 1 in 5,000 . Sixty per cent ( N = 70 ) had urines that were positive for cannabinoids , and 36 cases had levels which suggested heavy cannabis use prior to admission . In a health consultation released in April 2003 , EHIB concluded that levels of total and hexavalent chromium in the 25 wells did not exceed the drinking water standard for total chromium ; however , one well had levels of nitrate , lead , and mercury that were above the drinking water standards . Specifically , the study found levels of volatile organic compounds , including benzene , toluene , formaldehyde and methyl tertiary butyl ether ( MTBE ) , as well as carbon monoxide were up to 10 times higher inside vehicles than at fixed monitoring stations . " This agreement with Certicom , the leader in ECC wireless security technology , will enable us to provide the market with advanced levels of security for m-commerce transactions , " said Yvonne Verse , vice president and director - Data Solutions Platform Technology and 3rd Party Developer Support , Internet Software and Content Group , Motorola , Inc. " Used together with our enhanced WAP gateway and innovative Web-enabled devices , digital certificates from Certicom 's MobileTrust Certificate Authority provide authentication capability and added levels of security for our customers . Greenpeace found levels of radioactivity up to 3.000 times higher than background levels at the school and cordonned the area off . Although some water systems had levels of certain contaminants above federal standards at the time of the study , the study area was not considered to have contamination levels that were atypical of other areas in the U.S. To insure proper security , four graduated levels of security access are being built into the system . In order to ensure proper security , four graduated levels of security access are being built into the system .