Exhibit_F,_A10_Groover_Branch_Canal_Streambank.Stabilization.O_&_M_Plan_MIL-VOL-003_A-10,_26-B-01JS.pdf

OPERATION AND MAINTENANCE PLAN

Emergency Watershed Protection Program

MIL-VOL-003 / A-10 CANAL & BRIDGE #794072 SITE

Road & Bridge Division Volusia County, Florida

OPERATION AND MAINTENANCE NEEDS

This site will require the Road & Bridge Division to perform periodic inspections and operation and maintenance activities to maintain satisfactory performance. The following recommendations will help the Road & Bridge Division in performing adequate operation and maintenance.

I. VEGETATION

A. Weed and Brush Control

Mow to control weeds, briars, and bushes. On areas inaccessible to power mowing equipment, weed and brush control should be accomplished by hand or chemicals.

B. Insect and Disease Control

No disease problems should occur on bahiagrass, centipede or common bermudagrass.

Identification of pests and needed control should be obtained from local Agricultural Extension Service Office.

C. Revegetation

As soon as possible, repair sites that become devoid of vegetation. This will usually occur when adequate vegetative cover was not initially established. If this is not the case, study the situation carefully to determine the causes. This will probably be due to soil erosion or vehicles which may need special on-site assistance from the Natural Resources Conservation Service representative. Use the following recommendations for normal vegetation of smaller areas.

Fill the low or washed out areas with topsoil. The topsoil should be free of weed seeds, litter, and rocks, and have a high organic matter content. One inch of topsoil will require

3.1 cubic yards per 1,000 square feet.

Fertilize with 13-13-13 or similar fertilizer at a rate based on soil tests. Lime with dolomite at a rate based on soil tests. Incorporate fertilizer and lime into the upper six (6) inches of soil. After final grading, distribute bahiagrass seed uniformly over the area at a rate of 2 - 3 lbs. per 1000 square foot with a drop-type fertilizer spreader or cyclone-type broadcast spreader. Cover the area in one direction and then at right angles in the other direction. Cover the seed lightly one-fourth (1/4) inch deep. Firm the seed into the soil with a roller. After seeding, apply a mulch of one (1) inch or more of close fitting material, or up to four (4) inches of loose fitting material, so that about 25 percent of the ground is visible. Disk or spade in lightly at or near vertical angle. Starting 4 - 6 weeks after the seed has germinated, apply ammonium nitrate at the rate of three (3) pounds per 1,000 square feet every month until grass is well established.

Sod can be used instead of seed and will obviously revegetate the area quicker than seeding. The site preparation, liming, and fertilization is the same for seeding. Lay pieces of sod over the entire area on the contour with snug, even joints. Stagger the joints from strip to strip. Roll or tamp sod immediately following placement. Do not overlap the sod. On steep slopes secure sod to surface with wooden pegs or wire staples. If a dry period occurs, irrigate with one (1) inch of water every third day unless rain occurs. Do not exceed an application rate of one (1) inch per hour. After the area is revegetated, use the maintenance measures discussed in Sections III and IV.

II. STRUCTURES

A. Rock Riprap and Bedding Stone

The rock riprap and bedding stone does not require any operation. Perform periodic inspections of the rock riprap for signs of erosion, damage and washouts, especially after major storm events. Promptly repair any washouts that are detected by installing additional rock and bedding stone and reestablishing vegetation.

Remove excess vegetation that has become established within the limits of the rock riprap bedding. Apply herbicides as need to control vegetation.

III. SCHEDULE OF INSPECTIONS

The facility should be inspected (1) 30 days after completion; (2) after each major storm or occurrence of any unusual condition that might adversely affect the measure; and (3) annually. All deficiencies should be corrected immediately. Reports of the inspection(s) and subsequent follow up maintenance shall be kept on file.

IV. SUPPLIES AND EQUIPMENT NEEDS FOR O&M

The following supplies and equipment will be needed to operate and maintain the facility:

One pick-up truck used for inspection as needed.

Tractor with disk harrow and mower as needed.

Gasoline for truck and tractor; oil, lubrication, and maintenance supplies for truck and tractor as needed.

Bahiagrass sod or seed as needed.

Fertilizer and lime as required by soil test.

Mulch as needed.

Miscellaneous small tools such as drop type fertilizer spreader, weed eaters, etc.