Zahner & Associates, Inc. provided surveying services for a 189 mile Ameren electric transmission line from Montgomery Substation (Missouri) to Hills Substation (Iowa). The project was staged in three phases. Phase I included 67.4 miles from Montgomery Substation to Palmyra Tap. Phase II was 62.8 miles from Palmyra Tap to north of the Missouri-Iowa border. Phase III completed the project with 59.2 miles from north of the Missouri-Iowa border to Hills Substation.