Statement_of_Work_-_Seacamp_Campground_Septic_System.pdf

CUMBERLAND ISLAND NATIONAL SEASHORE

PMIS CUIS_330728

REPLACEMENT OF SEACAMP CAMPGROUND SEPTIC SYSTEM

NATIONAL PARK SERVICE (NPS)

1.0 PROJECT INTRODUCTION AND JUSTIFICATION

1.1 BACKGROUND

The current Seacamp campground has a comfort station that is utilized by campers and day visitors at Cumberland Island National Seashore (CUIS) the comfort station is equipped with six (6) water closets, eight (8) showers, four (4) interior lavatory sinks, and two (2) exterior sinks. The septic system was originally installed in 1994, with an update to the drain field performed in 2019.

A condition assessment was performed in 2022 by HDR Engineering, Inc, and the determination was made that the system was at the end of the life cycle. The engineering firm added that the existing system capacity of 4000 gallons is undersized to treat the estimated demand during the peak visitation and camping seasons.

1.2 Justification

The project is funded with Park Fee Revenue and is considered critical to continue providing safe and sanitary comfort stations at the Seacamp Campground. The current undersized septic system cannot meat the 5900 Gallon/Day demand from day visitors and campers during peak demand use of the facilities. To remain in compliance with the Georgia Department of Public Health for On-Site Sewage Management Systems, the Park will need to replace the existing septic system and expand the drain field.

The Park will maintain the system according to the O&M Guidelines (311-3-1-.17) from the Georgia Department of Public Health On- Site Sewage Management System rules to ensure maximum life cycle of the new system.

2.0 Scope

This action will replace the four (4) 1000-gallon poly septic tanks, the distribution pipe and structures, and the drain field components. The system will be replaced with four (4) 1500-gallon multi-chamber polypropylene or fiberglass tanks. The action will include installation of four (4) building sand trap that will decrease sand settlement in the tanks. The drain field is also being expanded from 1,584 square feet to 2,360 square feet to increase the percolation area to meet the peak service demand.

The campground and beach access shall be closed to campers and day visitor foot traffic to the beach access during demolition and clearing operations.

If the duration of all field work for this action is more than seven (7) working days, the campground and beach access will re-open when the clearing and demolition is completed.

If the contractor has a total work duration for clearing, utility demolition, and tank and drain field installation lasting longer than seven (7) days, the contractor shall provide eight (8) portable sanitation units for visitor use.

The contractor shall ensure that one (1) of the sanitation units is an accessible portable sanitation unit.

The contractor shall be responsible for maintaining the portable sanitation units daily while on site.

2.1 Tasks

Division 2: Site Clearing

1. The contractor shall clearly mark clearing limits of the drain field before work begins using flags or stakes. A representative from the park shall be notified when this task is completed so the work boundary can be verified.

2. The contractor shall remove all above ground vegetation, including shrubs, bushes, grasses, and any trees with a caliper less than 12”.

3. The contractor shall grub the drain field area to a depth of 12” below existing grade ensuring all roots and stumps are cleared from the drain field area.

4. The contractor shall drag and grade the area that is cleared to alleviate the need to have earthwork equipment on the on the site after the drain field is in place.

5. The contractor shall move vegetation debris from clearing the area to Racoon Key at the South end of Cumberland Island.

Division 2: Utility Demolition

1. The contractor shall pump out four (4) existing fiberglass septic tanks.

2. The contractor shall disconnect the drain lines to the septic tanks at the building.

3. The contractor shall excavate and remove the fiberglass septic tanks from the area to the east of the comfort station.

4. The contractor shall remover the distribution box before the existing drain field.

5. The contractor shall remove all drain components used to construct the drain field.

6. All debris from the disassembly and removal of the septic system shall become the property of the contractor. The contractor shall accept all responsibility for disposing of the utility system debris outside of the Park in a certified landfill in accordance with local, state, and federal guidelines.

Division 33: Utilities

1. The contractor shall excavate and install four (4) 1500-gallon multi-chambered polypropylene tanks to the east of the comfort station.

2. The contractor shall install risers with sealed pedestrian rated lids that allow the owner to inspect the inlet and outlet at each tank.

3. The contractor will install exterior sand traps on drain lines servicing the showers. The sand traps should be no more than 5’ from the shower structure.

4. The contractor shall route outlet drains from all tanks into a correctly sized distribution box with outlets that accommodate the flow from all four tank to ensure proper and equal distribution to the drain field.

5. The contractor shall install the drain field in the 2360 square foot cleared area to the southeast of the septic tanks.

6. The contractor shall install the drain field that ensures uniform flow of effluent throughout the system.

7. The contractor shall backfill and install the septic tanks in accordance with Georgia Department of Public

Health Manual for On-Site Sewage Management Systems, Rules of the Department of Public Health Chapter 511-3-1.

8. Contractor shall backfill and install the septic tanks in accordance with Manufacturer’s Specifications.

Division 32: Site Improvements

1. The contractor shall ensure that all areas of disturbed soil are backfilled and graded.

2. Contractor shall spread 10 pounds Bahia Grass seed per 1000 square feet.

3.0 Bid Requirements

1. The successful bidder shall include all costs associated with materials and installation of the upgraded septic system.

2. The successful bidder shall include proof of current certification as a Septic Tank Installer by the Georgia Department of Public Health for work. Any bid package not including a certification shall not be considered by the COR.

3. The successful bidder shall verify that cost of materials and labor includes septic tanks supplied by a manufacturer certified by the Georgia Department of Public Health.

4. The successful bidder will provide a tentative schedule illustrating the durations for individual tasks and the total duration of the completed work.

4.0 Deliverables

4.1 Post Award

Prior to issuance of an NTP

1. Safety Plan

2. Notification of the Qualifying Employee

3. Certificates of Insurance

4. Refuse Management Plan

5. Materials Submittals for Division 33 and Division 32

6. Shop Drawings

5. Shop Drawings shall include plan view of the septic system.

a) Plan view shop drawing shall include Inlet and Outlet invert heights of all structures.

b) Plan view shop drawing shall include the drain slope called out.

4.2 Close-Out

1. The contractor shall provide a 1-year warranty for installation workmanship.

2. The contractor shall provide a 5-year warranty for the septic tanks covering materials and workmanship.

3. The contractor shall provide an as built shop drawing to illustrate any changes made in the field during installation.

5.0 Compliance and Resource Protection

5.1 Natural Resources

1. Soil: Intact native topsoil from the project area shall be retained whenever feasible. Should additional fill be needed, all fills must be of quality suitable for use in a National Park Unit. Any fill materials required for the project must be obtained from a park-approved source.

2. Soil Erosion: Protect against erosion and topsoil depletion.

3. Exotic Vegetation and Noxious Weeds: Prevent introduction and minimize spread of exotic vegetation and noxious weeds.

4. Wildlife: Do not intentionally disturb wildlife nesting, breeding, or other activities.

5. Visitor Experience: Provide the Project Manager with the project schedule as soon as it is known and provide periodic updates of project work. Should closure or rerouting of visitors be necessary, closures would be for the minimal time required to complete the work activity or correct the problem.

6. Construction Debris: All construction debris and removed material shall be transported outside the park and properly disposed of at an approved off-site location(s) in accordance with federal, state, and local regulations.

5.2 Cultural Resources

1. Ground Disturbance: If ground disturbance is anticipated, an Archeological Monitor may need to be present at work site. If archeological resources are discovered at project site while Archeological Monitor is absent, immediately stop work in vicinity of discovery and report discovery to Contracting Officer’s Representative. Any necessary archeological monitoring shall be conducted by the Cumberland Island National Seashore Resource Protection Division.

6.0 Security

The Contractor shall be given access to the work area by an NPS employee. The contractor shall not be supplied with keys to Government buildings or facilities.

7.0 Place of Performance

Cumberland Island National Seashore; Seacamp Campground Comfort Station.

8.0 Period of Performance

Work shall be completed within 6 months contract award.

9.0 Payment

A Pricing Schedule shall be furnished by the contractor before the start of work. Payments shall be based on work completed per the Pricing Schedule.

The contractor will notify the Contract Officer when all work is complete. The Contract Officer’s Representative will inspect work and issue a list of deficiencies (punchlist). When the deficiencies have been corrected by the contractor and re-inspected by the COR, final payment will be approved.

CUMBERLAND ISLAND NATIONAL

SEASHORE WASTEWATER SYSTEMS

CONDITION ASSESSMENT

Seacamp Campsite Wastewater System The system consists of a below grade septic tank and drain field. The drain field was covered by thick brush, palm, and tree cover. It is recommended that the drain field be relocated or that the current drain field area be cleared of vegetation.

All septic tanks had been exposed by park staff at the time of the inspection. There were holes visible in 3 of the 4 fiberglass tanks and there was evidence that one of the tanks had overflowed during a recent rain event. This septic system needs immediate repair or replacement. The park staff stated that they planned to cover the tanks to prevent further overflowing.

The capacity of this system has been determined to be inadequate based on the estimated usage. The current capacity of this system is 4,000 gallons. Based on the estimated usage during the peak summer season, the Florida Department of Health Code Standards requires a 5800-gallon minimum effective capacity septic system.

No maintenance records were available; however, a schematic of the system was provided by park staff.

The below table summarizes the findings of the condition assessment and information provided by park staff.

Table 12 Seacamp Campsite Assessment

Unit Process and Parameters Values

Details

Material Fiberglass

Capacity (4) 1000 gallon

Installation 1994 (Drain field replaced 2019)

Condition Failed system

Percent Filled at Assessment 100%

Last Pump-Out June 2022

Usage 5,900 GPD summer | 2,500 GPD winter (given park toilet/shower and campsite standards)

Services Men (3) Toilets, (2) Sinks, (4) Showers | Women (3) Toilets, (2) Sinks, (4) Showers |

(1) Outdoor Sink

Ratings

Condition Assessment Rating 5

Reliability Assessment Rating 5

WASTEWATER SYSTEMS

CONDITION ASSESSMENT

Figure 31 Seacamp Campsite Exterior

Figure 32 Seacamp Campsite Septic Tank Covers

Figure 33 Seacamp Campsite Septic Tank Damage

Figure 34 Seacamp Campsite Septic Tank Damage

CONDITION ASSESSMENT

Figure 35 Seacamp Campsite Septic Tank Damage

Figure 36 Seacamp Campsite Drain Field Location

CONDITION ASSESSMENT

Figure 37 Seacamp Campsite Wastewater Schematic (NPS)