N4425519R6006_PWS_Attachment_F_NAS_Whidbey_rev.1.docx

ATTACHMENT F

Operations and Maintenance, Area 6 Landfill Cap and Groundwater Extraction, Treatment, and Recharge System, Naval Air Station, Whidbey Island, Washington

PERFORMANCE BASED WORK STATEMENT

N44255-19-R-6006, PWS Attachment F, Whidbey Area 6 O&M SLIN

OPERATION AND MAINTENANCE OF GROUNDWATER EXTRACTION, TREATMENT AND RECHARGE (GETR) SYSTEM AND LANDFILL CAP MAINTENANCE

OPERATION UNIT 1, AREA 6

NAVAL AIR STATION WHIDBEY ISLAND

OAK HARBOR, WASHINGTON

1. INTRODUCTION

Naval Facilities Engineering Command, Northwest (NAVFAC NW) is requesting Operation and Maintenance of the groundwater extraction, treatment and recharge (GETR) system (existing air stripper western plant) and landfill cap at Area 6; Naval Air Station Whidbey Island, Washington (NASWI) as part of the Navy’s Installation Restoration (IR) program.

2. BACKGROUND

Area 6 is a 260-acre tract in the southeast corner of Ault Field and is part of Operable Unit (OU) 1. Within Area 6, there are two areas where wastes are known to have been disposed of. Liquid wastes were disposed of at the former industrial waste disposal area at a time when regulatory requirements had not been established. These wastes reportedly consisted of solvents, oily sludge’s, thinners, and other compounds. Waste disposal began in 1969 and ended in the early 1980s. The former industrial waste disposal area is approximately 15 feet by 40 feet. During operation, it was a pit (also called the former waste oil pit - Site 55) approximately 10 feet deep. Prior to remedy implementation, it was filled and covered with natural vegetation.

A separate portion of Area 6 was used for Navy household municipal waste from 1969 to 1992. This landfill operations area was approximately 40 acres and is now covered with a synthetic cap, soil, and natural vegetation. The synthetic cap prevents infiltration of rainwater. The presence of vinyl chloride and 1,4-dioxane in groundwater downgradient of the landfill indicates some solvent sludge’s were disposed of in the landfill.

Area 6 is bordered by Ault Field Road to the north, State Highway 20 to the east, and the City of Oak Harbor Landfill on the south and southwest. Privately owned forested or logged land and a commercial sand and gravel quarry operation are located immediately west of Area 6. The City of Oak Harbor vehicle maintenance facility, an auto salvage yard, a transmission repair shop, the Auld Holland Inn, and a mobile home park are located in or near the southern boundary of the Oak Harbor landfill property. Private residences are located to the east, west, and south of the Area 6 landfill (Reference 1).

In 1989, an accelerated initial investigation of Area 6 was performed. The investigation assessed whether groundwater contamination was present and if water supply wells in the vicinity were or could be affected. Chlorinated solvents were identified in onsite groundwater at concentrations greater than cleanup levels. Also in 1989, the Washington State Department of Health (DOH) tested 13 public wells located within a 1-mile radius of Area 6 and the Oak Harbor Landfill.

In September 1990, the Navy began a Remedial Investigation/Feasibility Study (RI/FS) to determine the nature and extent of soil and groundwater contamination and to evaluate alternatives for the cleanup of contaminated areas. Groundwater monitoring identified two possibly distinct groundwater contaminant plumes in the shallow aquifer beneath Area 6. On the west side of the site, a “western” plume containing chlorinated volatile organic compounds (VOCs) appeared to originate from the former hazardous waste disposal area (Site 55) and extend southward along the western edge of the site. A second “southern” plume, also containing chlorinated VOCs, appeared to originate from beneath the landfill and extend southward just to the east of the other plume.

Geophysical and soil vapor surveys were conducted at Area 6 to evaluate the lateral extent of landfill material and to choose soil boring and groundwater monitoring well locations. Five sediment samples and six surface water samples were collected and analyzed during the RI to assess potential impacts to the intermittent stream at the site. Data from 25 groundwater monitoring wells installed at the site were used to assess potential impacts to the shallow, intermediate, and deep aquifers at the site during the RI, and 7 soil vapor extraction wells were installed to assess soil vapor. Soil samples from borings installed during the RI suggested the contaminant mass had migrated to the groundwater and little remained in the vadose zone to serve as a long-term source. An aquifer performance test was performed to estimate hydraulic characteristics of the shallow aquifer (Reference 2).

Unacceptable ecological risks were identified based on concentrations of chemicals of concern (COCs) in Area 6 soils and in sediments and surface water from the intermittent stream at Area 6. The precise location for the industrial waste disposal area(s) could not be identified, and it was determined remedial action could cause more environmental harm than the low levels of existing chemical contaminants. It was also determined the greatest potential risk to human health at Area 6 was posed by the future movement of organic chemicals in groundwater (Reference 1). The location of a disposal pit was later identified and a cleanup action was completed in 2002 (Reference 3).

There are two distinct groundwater plumes present at Area 6. The first plume is referred to as the western groundwater plume, which originates from the former industrial waste disposal areas (i.e., the former waste oil pit – Site 55). Multiple VOCs were detected at concentrations exceeding risk levels in the western groundwater plume. The second plume is referred to as the southern groundwater plume and is in the southern part of the landfill where contaminants originate from the capped landfill (i.e., landfill leachate is the source). Vinyl chloride was detected at concentrations exceeding risk-based concentrations in the southern groundwater plume (Reference 1).

In 2002, the solvent stabilizer 1,4-dioxane was sampled for and identified at concentrations exceeding the State of Washington Department of Ecology (Ecology) Model Toxics Control Act (MTCA) Method B levels in both plumes.

2.1 Remedial Action

The remedial action addressed the risk to the public posed by VOCs in leachate and groundwater. The purpose of the action was to reduce the risk associated with the continued spread of the contaminated groundwater plume at Area 6 and remediate the groundwater through two different categories of actions. The first action category was source control, which was intended to minimize movement of contaminants from the fill material in the landfill to groundwater and to prevent direct exposure to contaminated subsurface soil and debris. The second action category was groundwater control, which was intended to prevent further movement of contaminated groundwater across the site boundary and to prevent consumption by area residents of groundwater exceeding maximum contaminant levels. The combination of both source control and groundwater control actions was believed to be necessary to achieve the broader objective of restoring contaminated groundwater in the upper aquifer to levels that are safe for drinking.

An interim action Record of Decision (ROD) was developed that resulted in installation of a groundwater containment and treatment system (existing air stripper plant) to prevent the continued spread of contaminants from the former industrial waste disposal area in the shallow aquifer beneath Area 6 and to reduce the risk of impact to existing and future groundwater users. The system called for in the final ROD also addresses the southern groundwater plume. The system consists of 10 groundwater extraction wells with 8 currently operating, an equalization tank, particulate filters, packed column air stripper, discharge piping, and miscellaneous pumps, controls, instrumentation, and appurtenances. Trichloroethene, 1,1,1-trichloroethane, 1,1-dichloroethane, 1,1-dichloroethene, cis-1,2-dichloroethene, and vinyl chloride were identified as COCs in groundwater (Reference 2).

Table 1-1 lists significant dates for OU 1, Area 6 remediation. An interim removal action was conducted during 2001. The interim removal action was performed to address vadose zone contamination from the industrial waste disposal area. The objective of the interim removal action was to reduce the source of contamination potentially affecting groundwater at the site, thereby shortening the duration of the groundwater containment/treatment remedy component. The interim action included excavation, transport, and treatment and/or disposal of contaminated soils from the former waste oil pit. Excavation activities started on September 24, 2001, and continued through November 8, 2001.

Note:

OU - Operable Unit PW - production well ROD - Record of Decision RI/FS - Remedial Investigation/Feasibility Study

2.2 Selected Remedy

The remedy selected for Area 6 to address chlorinated solvents was a combination of landfill capping and groundwater control actions (i.e., groundwater extraction, treatment by air stripping, and groundwater recharge). Significant components of the selected remedial action included the following:

· Capping the landfill operations area trenches with a minimum functional standards (MFS) cap

· Assessing the interim action extraction system to ensure it achieves aquifer cleanup levels and to determine the need for additional source area extraction wells

· Extracting groundwater from the shallow aquifer at the western boundary of the landfill, treating it by air stripping, and returning the treated groundwater to the shallow aquifer at an on-site location

· Monitoring groundwater in the shallow, intermediate, and deep aquifers to assess the effectiveness of the groundwater treatment system

· Monitoring private drinking water wells in the vicinity of the landfill

· Implementing institutional controls

It should be noted as discussed in Section 2.4.1 the Navy is currently preparing a Focused Feasibility Study for 1,4-dioxane (tentative final submittal February 2018) and a Proposed Plan and ROD Amendment in 2018. The remedial strategy will be updated in the ROD Amendment to address 1,4-dioxane.

2.3 Remedy Components and Implementation

The groundwater containment/treatment system to remediate chlorinated solvents began operation in 1996 as an interim action at the site. The system includes the following major elements:

· Groundwater extraction wells and protective structures (PW-1 through PW-10)

· Equalization tank

· Sodium hypochlorite injection system (not used)

· Particulate filters

· Packed column air stripper

· Discharge piping

· Miscellaneous pumps, controls, instrumentation, and appurtenances Groundwater is pumped from the extraction wells into an approximately 91,000-gallon-capacity, single-walled steel, aboveground equalization tank (25 feet in diameter and 25 feet high) for subsequent filtration and treatment by an air stripper system. Treated groundwater is discharged to a low lying area for surface re-infiltration. As of March 31, 2017, the cumulative volume of water since operations began in 1995 is approximately 1.78 billion gallons. Site conditions and containment system performance is monitored using 34 groundwater monitoring wells. The final remedy incorporated the interim groundwater extraction and treatment system (Reference 2). Extraction wells PW-1 through PW-7 were installed as part of the interim remedy. Extraction wells PW-8, PW-9, and PW-10 were installed as part of the final remedy.

Construction of the landfill cap began in May 1996 and was completed in October 1996 when the final cover soil was hydro-seeded. The cap consists of several layers as follows (from bottom to top):

· Structural fill

· Support layer—high-strength woven geo textile

· Gas collection layer—sand with perforated high-density polyethylene (HDPE) gas collection and vent pipes

· Secondary liner—geo synthetic clay liner (GCL)

· Primary liner— polyvinyl chloride (PVC) membrane

· Drainage layer—geo composite liner with perforated HDPE drainage pipe

· Soil cover layer

Together these layers make up the landfill cap that is designed to limit the infiltration of stormwater through the waste, thereby preventing contamination of the aquifer from waste within the landfill.

2.4 Ongoing Operation, Maintenance, Monitoring

Nine groundwater extraction wells (PW1 through PW9), and a 6inch diameter fiberglass-reinforced plastic (FRP) header pipe comprise the groundwater extraction component of the system. Extraction wells PW-1 through PW7 were installed during the original installation of the system in 1994. Extraction well PW-2 was removed from service in 1996 when it was determined its very low yield was caused by bentonite grout moving downward into the well screen. Extraction wells PW8 and PW9 were added during an expansion of the system in 1996. Extraction well PW-10 was installed in 2002 as a future PW well; however, it has not been incorporated into the extraction system to date. All extraction wells were constructed using 6-inch-diameter stainless-steel casing and 0.010-inch continuously slotted stainless-steel screens. Table 1-2 lists the total well depths and screened intervals for the extraction wells. The extraction wells are located along the western and southern boundaries of Area 6. Each well pump has been sized to provide an average flow rate of 24 gallons per minute (gpm) per well for a total of 192 gpm for eight wells under optimal operating conditions. The header (influent) pipe carries extracted groundwater to the treatment plant equalization tank by gravity.

The carbon steel equalization tank located in the treatment plant containment area is 25 feet in diameter and 25 feet in height, yielding a nominal capacity of 91,000 gallons. The tank was sized to provide a minimum of 6 hours’ retention time at the design operating flow rate (192 gpm) while allowing for future expansion of the system.

Notes:

All depth measurements were taken from top of extraction well casing.

PW - production well

The packed-column air stripper system located adjacent to the equalization tank consists of the following components:

Two centrifugal feed pumps Four AC TECH QC Series Variable Frequency Drives (VFDs) Two bag filter units with six washable or disposable filter bags each Two blowers One Drexel liquid level sensor One magnetic flowmeter One 5-foot-diameter, 29-foot-tall countercurrent air stripper column with sump Two centrifugal discharge pumps

The groundwater system is operated by pumping from the equalization tank via feed pumps through the bag filters to remove suspended solids. The filtered water then passes through the countercurrent air stripping packed tower. Air is blown from the air blower into the base of the tower and up the tower through the packing. VOCs are stripped from the water by the air currents and carried out through the top of the tower. The treated water from the stripping tower is then pumped from the treatment plant to the recharge area via a 6-inch-diameter underground PVC discharge pipe.

Following initial attempts to inject the treated groundwater into the shallow aquifer through a series of recharge wells (drains) and a below ground perforated pipe, a 150-foot long above ground perforated pipe and constructed swale was placed into service in about 1998. In 2000, persistent biofouling caused a change in the discharge; the underground pipe was replaced with an above ground perforated pipe. Discharge was moved to its current location, north of the landfill. The above ground perforated pipe allows the treated groundwater to percolate from the pipe and flow west through what is now a natural native vegetation wetland swale just east of the site road north of the landfill. During wetter years some water flows north via an intermittent stream bed and eventually flows offsite to a Douglas Spirea peat bog north of Ault Field Road on Navy property.

2.4.1 Emerging Contaminant 1,4-dioxane

Treatment plant system influent and effluent is monitored monthly for VOCs and quarterly for 1,4-dioxane. Shallow, intermediate, and deep wells are regularly monitored to evaluate treatment system performance and track VOCs. Intermediate and deep wells are monitored to assess the possibility of vertical migration between these units. Private wells located around the Area 6 landfill were monitored for VOCs from 2005 to 2006. Other private wells to the southeast were monitored quarterly in 2005 and 2006 for 1,4-dioxane (Reference 4).

In 2002, the USEPA asked that the solvent stabilizer 1,4-dioxane, a common additive to 1,1,1-trichloroethane (TCA), one of the primary VOC contaminants at Area 6, be sampled for at NASWI. 1,4-dioxane was first detected in on-site wells in 2003; and in a private off-site well in 2005. According to EPA’s Integrated Risk Information System (IRIS), the carcinogenic risk from oral exposure to 1,4-dioxane is 1.1E-2 milligrams per kilogram per day (mg/Kg/day). The maximum contamination limit (MCL) for drinking water has not been established. However, many state governments have set advisory levels for this compound. For example, the state of California has an action levels at 3µg/L (ppb). The Island County Health Department has set an action level of 3µg/L (ppb) for 1,4-dioxane in off-site Navy wells. Ecology has set a cleanup level of 0.44 µg/L (ppb). The Navy minimized the potential impact to the public by:

· Replacing the well for a private off-site owner with a deeper well (free of 1,4-dioxane);

· Having the Agency for Toxic Substances and Disease Registry (ATSDR) complete a health consultation for 1,4-dioxane in private drinking water wells near NASWI in 2005;

· Educating the public by holding Restoration Advisory Board (RAB) meetings and distributing 1,4-dioxane factsheets; and,

· Installing off-site wells downgradient of landfill to detect leading edge of plume.

The existing air-stripping treatment technology does not remove 1,4-dioxane because of the compound’s relatively low vapor pressure. 1,4-dioxane continues to be re-introduced into the shallow aquifer at the site via the treated effluent. Although, the location of that re-introduction has changed a few times, it has generally been up gradient of the extraction wells causing a second 1,4-dioxane plume.

3.0 OBJECTIVE

The main objective of this project is to satisfy remedial requirements as defined in the ROD; therefore, the primary purpose of this task order (TO) is to operate and maintain the Groundwater Extraction, Treatment and Recharge (GETR) System including maintenance of the landfill cap located at Area 6 of Naval Air Station Whidbey Island in Oak Harbor, Washington. The existing air stripper GETR system consists of the following major components:

Groundwater extraction wells Equalization tank Air stripper system Discharge swale

The integrity of the landfill including the cap must be maintained and kept free of weeds including but not limited to all noxious weeds as identified by the State of Washington and overgrown plants that limit access or may damage the cap; and all roads to and from the landfill kept clear and easily accessed. The contractor must keep the landfill cap clear of all vegetation that would damage or prevent function. Vegetation must be mowed or removed within a minimum of 4 feet on each side of the road.

This Statement of Work (SOW) shall include site visits, environmental sampling, laboratory analysis, data interpretation, trend analysis, and reporting. The Contractor shall provide all labor, materials, tools, supplies, equipment, plant utilities, transportation, services, and other appurtenances necessary for: 1) operation and maintenance (O&M) of the existing air stripper GETR system; 2) the maintenance of the landfill cap; and 3) regulatory compliance and reporting.

3.1 Description of Tasks

As stated above, the main objective of this project is to satisfy remedial requirements as defined in the ROD. These requirements include: groundwater extraction from the shallow aquifer beneath the landfill’s western boundary, treatment by air stripping, return of treated effluent to the shallow aquifer, and maintenance of a semi-permeable landfill cap.

The existing air stripper GETR system was established to attain the following goals:

Reduce concentrations of contaminants that have already migrated into the shallow aquifer with the ultimate goal of meeting state and federal drinking water standards at point of compliance locations;

Prevent the further spread of VOCs in the shallow aquifer and treat extracted water to meet state and federal standards prior to discharge;

Reduce the potential risk to existing and future groundwater users located downgradient of the site; and, Prevent further migration of contaminated groundwater across the site boundary and into the lower aquifers.

Because hazardous substances remained on site as part of the cleanup action, conditional points of compliance were established as close as practicable to the former Hazardous Waste Storage Area (source of the contamination).

For the shallow aquifer, the conditional points of compliance for trichloroethene, trichloroethane, 1,1-dichloroethene, 1,1-dichloroethane, and 1,2-dichloroethene were established to be no greater than the circumference of a circle centered on a point halfway between wells N6-37 and N6-38 and not to exceed the western property boundary.

The compliance levels must be attainable from the conditional points of compliance to the outer boundary of the plume along the western property line. If the levels of trichloroethene or trichloroethane outside this area (during the remedial action) indicate the presence of non-aqueous phase liquids residuals, these points of compliance will be adjusted under subsequent 5-year reviews. The perimeter of the landfill operations area was determined to be the conditional points of compliance for vinyl chloride since the landfill was considered the primary source area for vinyl chloride.

These standards were based on MTCA Method B and are summarized in the Effluent Treated Water Quality Standards listed below. The Effluent Treated Groundwater Quality Standards take into account analytical considerations and have been re-evaluated during subsequent 5-year reviews. The treatment plant effluent water standards have remained the same, with the exception of 1,1-Dichloroethene which has increased from 0.07 micrograms per liter (µg/L) to 7 µg/L, since the ROD first established the initial groundwater cleanup standards.

The GETR system operational design conditions are as follows:

Groundwater Flow Rate:

Influent Groundwater Quality:

Effluent Treated Water Quality Standard:

The contract shall be a Performance Based Award with incentives based upon Attachment (1). The requirements specified by the following tasks shall be considered a minimum.

Since hydraulic containment is one of the primary goals of the remedy, one of the key requirements is limiting system downtime and maintaining the design extraction rate. Therefore, the contract performance evaluation shall focus on limiting downtime and decreases in extraction.

The contractor shall perform the following in accordance with the Paragraph 4.2; Deliverables.

1. Program Management/Coordination

2. Operation and Maintenance of existing air stripper GETR Plant

3. Landfill Cap Maintenance

4. Reporting Requirements

5. Waste Disposal (IDW)

TASK 3.1 Program Management and Coordination

The Contractor shall conduct all necessary program management actions to ensure this delivery order remains on schedule and within budget. The Project Manager is responsible for notifying the Remedial Project Manager (RPM) and the Contracting Officer’s Representative (COR) of any problems that arise and identifying and communicating corrective solutions.

The Contractor shall perform all necessary project management tasks. Project management tasks shall include activities associated with communication, billing, staff assignments, materials approvals and overall management of the project. The project manager shall mobilize the project team and provide on-going team coordination, plan and schedule project activities.

TASK 3.2 Operation and Maintenance of the Existing Air Stripper GETR

Note: For bid purposes, anticipate that preparation of the O&M Manual as part of task 3.2 in will be necessary in Base Year (SLIN A240AC). Follow on years may require minimum updates to the manual. Operation and Maintenance of the Existing Air Stripper GETR will be required each year the SLIN is awarded. The O&M Plan prepared under SLIN A240AC, shall serve as the basis of work performed under SLINS B240AC, C240AC, D240AC and E240AC.

The contractor shall provide project management, utilities, materials, labor, and analytical costs that are necessary to keep the system running effectively and efficiently. The contractor shall submit for approval standard operating procedures (SOP) based on their internal SOP (for pump and treat systems) as well as the O&M manuals referenced below in Section 4.

The contractor shall submit for approval an O&M manual that clearly demonstrates their understanding and ability to keep the system running effectively and efficiently. Although this O&M manual will be used throughout the life of the contract, it is anticipated addendums and/or minor changes will occur (i.e. equipment upgrades, etc.) without any additional cost to the government. The format for the O&M manual should be consistent with the O&M manuals referenced in Section 4.

At a minimum, the O&M manual must include the following:

· Contractor’s internal SOP for operating GETR systems;

· Site specific SOP;

· The requirements outlined in the approved O&M manuals referenced in section 4;

· Purpose and objective of the O&M;

· Rationale and purpose for collecting environmental samples including how the data will be used to assess the plant operating conditions and inform decisions on optimizing the plant;

· Information and specification on all types of pumps used on site; and,

· Equipment specifications as Appendices.

Note: The existing air stripper GETR system and the landfill cap are operated and maintained pursuant to the approved Final Operation and Maintenance Manual (O&M MANUAL), for Area 6, Operable Unit 1, Rev 1, February 15, 2002 and Rev 2, September 24, 2004, and August 31, 2017 (Reference 5).

The contractor shall provide ongoing technical support to the Navy covering all aspects of O&M including preparation of an Annual Report/Technical Memorandum. Sampling and analysis procedures shall be conducted in accordance with an approved Sampling and Analysis Plan.

For reporting proposes, sampling frequency is monthly for VOCs and quarterly for 1,4 dioxane; however, it is expected weekly if not daily sampling is conducted to determine and/or maintain system effectiveness. The Annual report must cover all sampling events; therefore, the contractor shall take care to set the schedule to allow all data to be received and validated, if necessary, before the end of the performance period.

Operating Labor Plant operators must be qualified to perform O&M and must have a minimum of three consecutive years of experience as demonstrated on their resume.

The Plant operates 24/7; labor shall include full-time employees to clean equipment, monitor the system, clean treatment components, clean wells that would foul without routine attention, or perform other routine maintenance; operate a filter press (if necessary), and accept deliveries of materials.

Routine Maintenance Within two (2) days, the contractor shall replace or repair minor system components such as valves, flow meters, pumps, switches and controls.

Extraction well cleaning/rehabilitation are needed on a regular basis and is considered routine maintenance. See referenced documents in Section 4.

Operational experience has shown numerous wells experience a gradual reduction in flow rates over time. Extraction wells in which reduced yields have been observed include: PW-4, PW-5, PW-6, PW-7, PW-8, & PW-9. The most likely cause of the reduced flow is biofouling and mineral precipitation. These wells extract water from an area of site affected by Area 6 landfill leachate in which recovered groundwater is in a reduced state and exhibits lower pH, high specific conductance, and high dissolved metal concentrations (iron and manganese). Bacteria and amorphous iron and manganese precipitates have been observed in water samples collected from these extraction wells. Extraction wells that have experienced reductions in extraction rates have shown bacterial growth on inlet strainers and linings of riser pipes with bacterial growth and mineral precipitates.

Some well yield losses also have been apparent more infrequently due to bacterial growth and/or mineral precipitation on well screens or in the well sand pack. Growth on inlet strainers was addressed initially by physical cleaning when pumps were pulled or by surging created by cycling pumps on and off.

Eventually, inlet strainers were removed (on most pumps) to eliminate a surface for bacterial growth. Pumps and riser pipes have shown accumulation of one or more bright reddish orange, reddish brown, black, and white materials, leaving open conduits as narrow as 0.25 inch. These accumulations have been removed when pumps are pulled by pressure washing and/or chemical washing.

Exposure of the GETR to local climate and weather results in corrosion and/or deterioration of system components. Included in maintenance of the GETR is protecting all system components and protective structures to maintain optimal functionality.

Monitoring In addition to the monitoring used for reporting as outlined in the Activity Schedule Matrix, the contractor shall monitor the treatment plant process water as necessary to operate the plant effectively and efficiently, at no additional cost to the government.

Utilities The contractor shall obtain the necessary permits for connections to necessary services provided by utility companies serving the project area including but not limited to electricity and telephone services.

Non-Utility Consumables The contractor shall provide non-utility consumables. These include materials and chemicals that are used as part of the routine O&M, such as granular activated carbon, chemicals for pH adjustment, and chemicals for well maintenance and equipment cleaning.

TASK 3.3 Area 6 Landfill Maintenance

The Contractor shall provide maintenance to the landfill cap, drainage system, methane off-gas vent system, detention basin, and perimeter roadway and perimeter drainage ditch system. Maintenance shall not be conducted during or immediately after major storm events unless so directed by the Contracting Officer or their designated representative (COR). Maintenance shall comply with referenced documents including previously approved O&M Manuals. Major required maintenance shall be documented in a formal plan and submitted to the Contracting Officer or their designated representative for concurrence. Photographs of the landfill cap and specific cap features shall be obtained before and after each maintenance event.

Inspection of the Detention Pond, Borrow Areas, Access roads and other disturbed areas shall be conducted to evaluate potential impacts to landfill cap integrity. Observations shall be noted. The landfill cap itself is approximately 40 acres and shall include all areas within the landfill cap perimeter road and 4 feet of the outboard roadside; see referenced documents, while the landfill site itself is approximately 280 acres and shall include all areas within the property fence. Site Maintenance shall include:

· Landfill Cap Vegetation Control– Landfill Cap Only (40 Acres)

· Fertilization and Lime addition – Landfill Cap Only (40 Acres)

· Herbicide application – Landfill Cap (40 Acres)

· Drainage System Maintenance – Entire 280 Acres Site

· Rodent control – Limit Landfill Cap Impacts (40+ Acres)

· Drainage lines and perimeter drainage ditch systems shall be cleaned out of vegetation and silt buildups if it is determined such accumulations inhibit normal flow. – Entire 280 Acres Site

· Access Road Maintenance & Vegetation Control – Entire 280 Acres Site

· Maintenance of Detention Pond, Borrow Areas and other disturbed areas – Entire 280 Acres Site

· Pest, Weed and Tree/Shrub Control – only as needed to minimize the potential invasion and/or damage of the landfill cap -Entire 280 Acres Site Landfill Cap Performance Incentive Determination:

The contractor shall manually (before and after) perform population count to determine incentive accomplishment for eradication of taproot plants. Five 40-foot diameter circles will be selected at random during the growing season and a hand count conducted to determine plants per area. A similar population count will be conducted the following year to determine incentive accomplishment.

TASK 3.4 Reporting Requirements

The contractor shall prepare and submit appropriate documentation regarding O&M activities including environmental monitoring for the duration of the Task Order, a Technical Memorandum. This annual report shall include Project Documentation in accordance with the contractor’s internal SOP, the approved site specific SOP and the approved O&M manual, contractor’s general provision, Introduction including the above listed objectives; Site Description; analytical results and system measurements; any Analytical Data Trends; conclusions and Recommendations for upcoming O&M year.

Annual Landfill Cap Inspection Report (technical memorandum) shall contain all recommendations and findings along with the documentation and data obtained in previous cap inspections. Quarterly observations from the visual inspection of the detention pond, borrow areas etc. shall be incorporated into the Report.

The contractor shall provide 2 copies of the Report on CD-ROM using MS-DOS compatible on electronic media as follows: Provide word processing files in Microsoft Word (Government to specify required software format) or equivalent. The contractor shall be responsible for providing monitoring information to the NIRIS database contractor in accordance with the General Provisions of the contract. Other reporting requirements shall be completed and submitted by the contractor, as identified in this SOW.

TASK 3.5 Investigative Derived Waste (IDW)

The Contractor shall be responsible for characterization and disposal of all waste generated by this project. This shall include all sampling equipment, personal protective equipment (PPE), rinse-water, purge-water or IDW.

IDW wastewater generated at Site 6 or groundwater related to Site 6 shall be disposed of by the contractor in the Area 6 treatment plant containment sump. Disposal of IDW wastewater from private, off-site wells shall be determined by laboratory analysis concentrations below MTCA levels for drinking water for Area 6’s chemicals of concern (COCs).

All non-hazardous solid waste shall be disposed of in the commercial waste container provided at Area 6 by the treatment plant facility operator.

Should waste require a hazardous waste manifest, bill of lading or other tracking procedure by a transporter or disposal site, it shall be coordinated through the NASWI activity representative for review and approval prior to disposal by the contractor.

4. APPLICABLE DIRECTIVE/REFERENCES

The contractor shall adhere to the following documents in accordance with Section 5.0, Performance Requirements.

5 PERFORMANCE REQUIREMENTS

The contractor is expected to complete all O&M requirements within 365 days from notice to proceed. (The period of performance is therefore 455 days from notice to proceed.) Deliverables submitted under this SOW shall be in accordance with the following schedule:

Task 5.1 Meetings and Schedule

The contractor shall prepare and submit an MS Project Schedule detailing the completion of the requirements of this TO. An initial schedule shall be prepared and submitted prior to the field meeting and updated monthly with progress on tasks and submitted to the Remedial Project Manager (RPM). The schedule shall include the Contractors Work Break-Down Structure (WBS). The contractor shall assume 15 days are required for internal Navy reviews, and 45 days for agency reviews. If comments are received prior to the 45-day period, the schedule shall proceed as indicated above, and accommodate the shorter review period. The schedule shall be submitted with the contractor’s proposal and maintained throughout the duration of the task order. An updated copy of the Gantt chart shall be provided to the RPM and COR via e-mail on a monthly basis and weekly Project Projection Schedule shall be emailed to the RPM and GDA on a weekly basis.

The contractor shall attend the meetings listed below, at a minimum during the course of the project. The contractor shall record the minutes of the Meetings and provide a written record of meeting discussions and agreements to the Navy RPM. Personnel recording meeting minutes shall have a working knowledge of the technical aspects of the project.

Kick – Off Meeting

Project Management Meetings

NAVFAC Northwest /NASWI/telephone Discuss report scheduling, coordination, and final reporting.

Task 5.2 Deliverables

All deliverables shall undergo a technical review for technical accuracy of text, data tables, figures, photos, graphics and appendices, and trend analyses and appropriateness of conclusions and recommendations prior to submittal to the Navy and Agencies (if applicable) for review.

In addition, all deliverables shall undergo technical editing for consistency, organization, concise presentation of data, figures, photos, graphics, and information in appendices, and the accuracy of the table of contents and acronyms and abbreviations list prior to submittal to the Navy and Agencies (if applicable) for review.

(days* from award or prior task, or actual date) #of Hard & Electronic Copies

*Days are calendar days

The submittal of all deliverables, sampling data, and laboratory data packages required under this TO shall comply with Navy’s most recent SOP as described in the Contract. A current copy of the Gantt chart shall be provided to the RPM and COR via email. If the project extends beyond 30 days, it shall appear in the schedule and be updated monthly.

TASK 5.3 Project Plans and Reports

The following plans shall be submitted for Navy review and approval. The Plans shall be approved by the Navy prior to any work on site.

APP and SSHP, or addendum per basic contract

Annual O&M Technical Memo

1E=Electronic copy

6.0 POINTS OF CONTACT:

Naval Facilities Engineering Command Northwest 1101 Tautog Circle Silverdale, WA. 98315 Fax: (360) 396-0857 (POC will be determine by separate corr. After award)

N44255-19-R-6006 PWS Attachment F, NAS Whidbey_rev.1

DELIVERABLE1 SCHEDULE MATRIX

Number of (#hard copies) or [#CDROM copies]

(4) & [1]

E-mail E-mail

E-mail E-mail E-mail E-mail E-mail

E-mail

E-mail

E-mail E-mail E-mail E-mail E-mail

E-mail E-mail E-mail E-mail E-mail

Landfill Cap Inspection Report (Annually and after major storm events) E-mail

[2]

E-mail

Daily, Systems Operations Report (Compiled and submitted weekly)

Notification of Acid Wash (Notify compost contractor)

Monthly Project Projection Schedule

Monthly Energy Usage (Station representative TBD)

10 days after receipt from utility

Annual Herbicide/Pesticide Usage (Station representative TBD)

Schedule TBD

1. The deliverables depicted in Section 5.2 – Deliverable Schedule Matrix is in addition to what is required in contract general provisions.

2. All draft documents that include a draft and final submittal shall be submitted electronically as an attachment to and E-mail for review and comment. All meeting minutes and periodic reports shall be submitted as an attachment to and E-mail.

3. All periodic reports shall be individually book marked and submitted as a consolidated report on CD-ROM.

ACTIVITY SCHEDULE MATRIX

Extraction Well Inspections

X

Stripper Tower Acid Wash

X

Treatment Plant Sampling

X

Swale and Discharge Line Inspection and Cleaning

X

Bag Filter Change-out

X

Equipment Rotation and Lubing

Containment Pad and Sump Cleaning

X

Perform Control Checks

X

X x

Plant Data Management

X

H&S and Emergency Response Equipment Inspect

X

Extraction Well and Pipe Chemical Cleaning Service x

Extraction Well and Pipe Mechanical Cleaning Service – minimum once per year per well

X

Equalization Tank Inspection

X

Equalization Tank Cleaning (at a minimum perform in Odd Calendar Years)

X

SAA/HWAA Inspections (If/when applicable)

X

ATTACHMENT (1): PERFORMANCE REQUIREMENTS SUMMARY- EVALUATION CRITERIA

(Did not Meet AQL) Marginal (Met AQL, but with difficulty) Satisfactory (Met AQL) Very Good (Exceeded AQL) Exceptional (Greatly Exceed AQL)

ATTACHMENT (2) - SPECIAL CONDITIONS

2.1. All requirements mentioned in this Contract Task Order, remain in full effect and performance under this Contract Task Order shall be in accordance therewith.

2.2. The contractor shall be responsible for enforcing site security by maintaining access gates in their closed and locked positions. The presence of unauthorized persons shall be reported to the Activity Security Office immediately.

2.3. The Site Superintendent shall be an employee of the Contractor and shall be on-site a minimum of 24 hours over a normal five day workweek. The Site Superintendent, along with his responsibilities and authorities shall be designated in writing and accompany his pass and badging request.

2.4. The contractor shall identify, in writing, a 24-hour on-call representative responsible for systems shutdown and notification.

2.5. The contractor shall develop weekly and monthly project work projection schedules that discuss what is to be accomplished for the forthcoming performance periods.

2.6. Public Affairs - The Contractor shall not disclose any data resulting from actions in this contract to the news media or public. The contractor shall refer all press or public contacts to the NASWI Environmental Affairs POC and shall notify the Contracting Officer, their designated representative, or NAVFAC Project Manager of their actions. The contractor may not distribute reports or data to any source, unless specifically authorized by the Public Affairs Officer in accordance with NAVFAC Instruction 5720.10A. (Reference: NAVFAC 5720/6 Form - Publication Security Review and Clearance).

2.7. Any oral…