 Tests in the 1980s in the Loxahatchee National Wildlife Refuge directly south of sugarcane fields indicated  water had 500 ppb of phosphorus.
<fluency>  Tests in the 1980s in the Loxahatchee National Wildlife Refuge directly south of sugarcane fields indicated  water had 500 ppb of phosphorus.
 Tests in the 1980s in the Loxahatchee National Wildlife Refuge directly south of sugarcane fields indicated that the water had 500 ppb of phosphorus.