Attch_1_-_Statement_of_Work.pdf

Statement of Work Cottonwood Drain Field Replacement and Expansion

Part 1: Scope/Background/Objective

1.1 Scope of Work

The contractor shall remove and replace existing drain field media and leach lines.

In addition, contractor shall design new drain field with an additional 2 leach lines by expanding the current drain field’s footprint up to 30 feet west of the current edge of the existing drain field. The contractor will relocate the lift station PV array and move it north and out of the drain field while also installing a new utility vault around the multiport valve and the filter that are currently installed. The contractor will also ensure each new line has a vent and inspection port located on the ends of the lines. The lift station pump will also be replaced with one that pumps at 15 gallons per minute and/or perform in accordance with the design of the new drain field expansion; provide submittal for government acceptance.

Upon completion of work the contractor will provide the park an as-builts of the new drain field.

1.2 Background

Cottonwood Visitor Center is the southernmost visitor center for those entering Joshua Tree from interstate 10 located approx. 20 miles west of Indio California. The current septic system was installed in 1999. Currently the visitor center averages at peak season 7,500 visitors per week during the month of March. Visitation falls off to less than half that during summer months.

Peak days approx. 1000 people come to the visitor center with less than ¾ using any restroom amenities.

As Joshua Tree’s National Park visitation has risen over the last decade, the septic systems have been pushed past capacity. At this location the septic system drain field has been saturated and needs to be replaced while also expanding capacity.

Currently the park is undergoing design for a new visitor center. It is expected that this leach field will be retired in 2028 when the new visitor center is constructed with a new septic tank and leach field.

Currently the septic system is made up of 2 septic tanks 4,500 and 3,500 gallons in size along with two cylindrical concrete holding tanks. These tanks are inline and as one fills it spills over into the other holding tank which includes a sump pump. This pump is activated when a float detects the holding tank is full or it can be started manually.

Upon activation the sump pump sends fluid through an above ground filter and into a separate vault which has a 4-way automatic diverter that sends the fluid into one of 4 leach lines. Each time the sump pump is activated the 4 port diverter switches automatically to the next leach line in the series and all fluid gets pumped into that one line. After pumping is complete the float deactivates the sump pump and remains off until the next time the holding tank fills. Upon the next pump activation, the 4-port diverter switches to the next leach line in the series.

Existing leach line diameter is unknown. The current lift station pumps at 15 gallons-per-minute.

The pump is run by a PV array with battery backup located within a modern enclosure.

No maintenance nor components located in the system before the lift station pump require maintenance or modifications. All work in this contract will be conducted from the lift station pump to end of leach lines.

It is believed the existing leach lines are an infiltrator type system with each leg being 90 feet long; Each line has an inspection port and vent on the end of the line.

The current leach field has a media depth of approx.. 8 – 9 feet.

Currently the comfort station at Cottonwood is closed and will not be reopened until the drain field is fixed. The park has porta john service located in the parking lot for visitors to use. Contractor will not have to worry about providing any temporary services while work performing work.

1.2 Objective

The objective of this contract is to expand the existing drain field to meet current demand with an expected lifespan of no more than 5 years. The existing drain field to include media and infiltrator lines need to be replaced and reinstalled with additional capacity. The existing PV array and inverter/battery storage compartment will need to be relocated off the existing drain field to a position 50’ north of its current location. PV array and enclosure will need to be installed on concrete slabs and piers identical to its current location.

The Cottonwood Maintenance Yard is available for equipment and materials storage during project. It is located .40 miles away from jobsite.

1.3 Period of Performance

The Period of Performance for this requirement will be 90 days from the issuance of the notice to proceed. The contract completion date at the time of award will be based on the assumption that the successful offeror will receive the notice to proceed by 10 calendar days after award. The completion date will be extended by the number of calendar days after the above date that the Contractor receives the notice to proceed, except to the extent that the delay in issuance of the notice to proceed results from the failure of the Contractor to execute the contract and give the required performance and payment bonds within the time specified in the offer.

Part 2: Contractor Tasks & Supplies

The contractor will conduct the following:

a. Design a new drain field which has 50% more capacity than existing drain field.

b. Create and provide as-built drawings for new drain field.

c. Ensure proper permitting requirements are met and acquired before work begins.

d. Add additional 2 leach lines.

e. Remove and relocate photovoltaic array to approx. 50 feet north of the current location and out of the existing and new drain field. Remove all existing concrete slabs and piers currently supporting PV system.

f. Install PV array and battery enclosure on a concrete slab and piers echoing how it is currently installed.

g. Remove and replace drain field media.

h. Install a total of 6 new infiltrator type leach lines with inspection ports and vent tubes on the ends of each line.

i. Replace the sump pump utilized in the lift station that has a capacity to pump at 15 gallons-per-minute.

j. Install new utility vault which encompasses filter and multi-position valve;

provide submittal for government acceptance.

k. Install new multiport valve to accommodate all 6 leach lines and/or propose an alternative to controlling which lines receive waste; provide submittal for government acceptance.

Part 3: Contract End Items

Replacement of drain field media to include expansion to a total of 6 leach lines.

Moving of photovoltaic array and battery backup housing for lift station to 50 feet north of current location, replacement of 4-way valve to one that can handle 6 individual leach lines. Replacement of sump pump in lift station and installation of new utility vault which will house the filter and new valve.

Part 4: Submittals

The Contractor shall provide the listed submittals using the CM16 transmittal form by the required deadlines after award:

a. The following Item shall be submitted no more than 10 days after the contract award. Once these submittals have been reviewed and approved, the contracting officer will issue the notice to proceed.

i. Satisfactory evidence of liability insurance coverage and workman’s compensation for the Contractor and all subcontractors.

ii. Payment Bond

b. The following items shall be submitted after the NTP has been issued, but before the any onsite work is performed. On site work shall not commence until all of the following submittals have been received an approved.

i. Letter designating the Project Superintendent

ii. Construction schedule detailing mobilization/demobilization dates, dates detailing location and work being accomplished, and crew size and makeup

iii. Accident Prevention Plan

iv. Site Specific Safety Plan

v. A list of Subcontractors for this project (if subcontractors are being used)

vi. Written statements from subcontractors certifying compliance with applicable labor standard clauses (if subcontractors are being used)

Part 5: Contractor Use of Premises The Contractor Shall always adhere to the following while working within Death Valley National Park.

a. The Contractor shall be identifiable through the use of uniforms, name tags, marked vehicles, high-visibility vests, hats, or hardhats with company logo, or similar, and maintain a professional decorum and appearance.

b. The Contractor shall furnish a list of personnel with phone contact information.

c. Do not drive vehicles off road or access non-project areas without permission from the contracting officer representative.

d. Ensure all personnel (contractors, subcontractors, and vendors) entering or working in the park are familiar with and obey all park regulations. Law enforcement rangers will intervene if they perceive any unsafe or unlawful activity.

e. Work shall be performed between the hours of 06:00-18:00 Monday through Friday, excluding Government holidays. Work outside regular hours requires approval from the contracting officer and the Park’s Chief Ranger (or their designee). Requests for work outside of regular hours must be submitted not-less-than two working days in advance.

f. Smoking is prohibited inside or outside within 25 feet of any buildings in the Park.

This applies to existing buildings, buildings under construction, and buildings under renovation. Discarding of tobacco products or debris anywhere other than into designated tobacco receptacles is considered littering and subject to fines.

g. Confine storage of equipment and materials to the staging / lay-down/ storage areas identified by the COR or as established at the preconstruction meeting.

h. The contractor shall park vehicles and heavy equipment in designated areas for contractor use or as established at the preconstruction meeting.

Part 6: Additional Requirements

a. Licensure: All work shall be performed by workers who hold appropriate licenses in one of the 50 States, the District of Columbia, Puerto Rico, or other US territory. Where allowed by the state issuing the license, work may be conducted by unlicensed workers provided the work is overseen by a licensed worker. With approval by the Contracting Officer, certification from North American Technician Excellence (NATE), or similar, may substitute for state licensure provided it does not prevent the Contractor from obtaining necessary materials.

b. All affected areas must be left in a clean and tidy condition. Any damages to Government property will be fixed and repaired at no cost to the Government.

c. All new equipment, supplies, and products must conform to the manufacturer’s instructions and guidelines.

d. Contractor shall provide one-year parts and labor warranty.