J-1503050-13(g3) JBAB LID 2020_Amend 0006 (Att 23).pdf

1503050 - GROUNDS

Product Name (120

Characters) Structure ID Associated

Building No.

Zone Longitude Latitude Description Extended Estimated

Quantity Unit of Issue

0.047 0.349 0.123 0.504 1.426 0.988 0.474 0.603 1.353

2,439

66 234 271 1,650 250 South 630 250 North 396

1,071

5,900

Maintain LID – green roof

The Contractor shall perform maintenance and inspection of green roofs. This includes periodic irrigation, weeding, replanting, and removal of debris from outlets. Contractor shall perform the work within 15 days of request.

23,426 SF

Maintain LID-permeable pavement

The Contractor shall sweep and vacuum permeable pavement system to reduce sediment accumulation. Inlets and drains must be cleared of debris. Replace chips and stones from openings as necessary. The Contractor shall perform this work within 20 days of request.

2,990

SF

Maintain LID – swale The Contractor shall perform maintenance and inspection of dry, wet, and bio-swales. This includes: Checking and removing sediment accumulation, debris removal and disposal, mowing of dry swales, inspection of structures for spalling and deterioration, and replacement of planting, soil and rip rap (as necessary). The Contractor shall perform the work within 15 days of request.

SF

Maintain LID – Bioretention/rain garden

The Contractor shall perform maintenance and inspections of bioretention cells and rain gardens; which includes:

removal of debris, unclogging of inlets/outlets, remove weeds, re-mulch cells, replace dead plants with like species and comparable size to achieve 80% plant coverage. Contractor shall perform work within 15 days of request.

SF

Control Undesired Vegetation

Remove weeds and other undesirable vegetation using manual methods.. Work shall be completed within 10 calendar days. SY

Mulching Remove the existing mulch, removing weeds, dead shrubbery and other debris from the area to be mulched. The Contractor shall install a breathable mesh fabric over the entire area to be mulched. Low areas that retain water throughout the flowerbed shall be leveled and graded, using screened topsoil. The Contractor shall provide shredded hardwood mulch to a minimum depth of three inches (3”), ensuring the underside of all plantings and shrubs have a protective barrier against frost and diseases and to stimulate plant growth. Work shall be completed within 10 calendar days.

SY

Field Mowing Vegetation shall be mowed in accordance with C-1503050. All debris shall be removed upon completion of mowing. Work shall be completed within 20 calendar days.

AC

Clear storm drains Drainage systems include curb gutters, curb inlets, brow ditches, drainage channels, swales, catch basins, yard drains, and other devices used to direct the flow of runoff. The Contractor shall clean and remove debris from drainage systems that would inhibit drainage. Aboveground storm drainage systems shall be maintained clear of obstructions, debris, weeds, and anything else which may restrict runoff flow.

EA

Tree Planting This line item is for time and labor to plant a tree. Planting procedures shall be in accordance with accepted nursery standards. The Contractor shall water and provide continuing care to ensure new plants develop properly.

Trees shall be planted in accordance with accepted horticultural standards, including fertilization, mulching, and watering. Trees shall be guyed and staked in at least three directions. Tree species shall be specified in the task order. All plants that die or fail to develop noticeable growth within one year of planting shall be replaced by the Contractor with plants of like size and type, at no additional cost to the Government. Work shall be completed within 5 calendar days

2 EA

J-1503050-13(a3) - JBAB LID Inventory & SOW

Medium Tree and Stump Removal

Remove trees 6 to 18 inches in diameter measured at 4.5 feet above ground level. Remove stumps to 12 inches below ground level and remove roots to 4 inches below level ground extending to six feet from tree. Treat to prevent regrowth. Work shall be completed within 7 calendar days.

2 EA

Large Tree Pruning Prune trees according to their natural growth characteristics leaving them well shaped and balanced, and to promote proper health and growth by removing dead/damaged/diseased and broken areas. Lower limbs may be pruned to provide clearance. Pruning shall be accomplished by or under the guidance of a certified Arborist. Work shall be completed within 1 calendar day.

2 EA