Specifications include, but are not limited to: Mowing Visually inspect the lawn areas a minimum of once a week for leaves, debris litter and trash. Remove any leaves, debris, litter and trash from the lawn areas minimum of once a week and/or prior to each mowing. Maintain turf height at a height ranging from three (3) inches to four (4) inches Prior to mowing, remove all objects that could become a hazard if struck by mowers such as litter, debris, trash bags, large cardboard boxes, mattresses, pillows, tires and recap pieces, pine cones, etc. Sweep or blow pavement areas after each mowing. Mowing areas that are saturated with water or where standing water is present, is prohibited. Mowing operations are prohibited when conditions are such that turf damage would occur or tire ruts will be left. (See line Trimming) Chemical control of turf is prohibited. Contact the Engineer and receive department approval prior to performing any chemical control of weeds. Slope Mowing Performing slope mowing in areas not accessible with conventional mowing equipment such as beyond concrete ditch paving, slopes greater than 3:1, wet areas, bridge end rolls, behind guardrail, etc. In lieu of slope mowers, blade or string-type trimming equipment is acceptable for use.