AMD_0002_(Final),_Attachment_9_CLS_503_Wastewater_Services_19JUL19.docx

Attachment 9 CLS 503 Wastewater Services

Attachment 9 (CLS 503 Wastewater Services) Wastewater Services

19 July 2019 (Amendment 0002)

Table of Contents

1.0 General Information.

1.1 Overview. The sanitary wastewater treatment and collection system delivers sanitary wastewater to the Sewage Treatment Plant (STP) by means of collection lines, sewer mains, and lift stations. The FS and HAAF wastewater systems consist of numerous wastewater treatment units with associated collection systems. All collection systems include, but are not limited to; all associated piping, pumps, valves, lift stations, controls, instrumentation, emergency backup systems, electrical, electronic and digital systems, phone dialers, switches, metering devices, sewage basins, alarms, wet and dry wells, motors, air compressors, filters and appurtenances. TE E-7 has a system description of the treatment systems. The Contractor’s responsibility in the housing area is limited to main lines and manholes.

1.2 Components. Sanitary wastewater treatment and collection system components include, but are not limited to: rotary fan press, clarifiers, sludge gates, drying beds, electrical, electronic, and digital systems and controls; level controls, control panels, phone dialers, switches, metering devices, sewage basins, alarms, lift stations, wet wells, dry wells, pumps, motors, air compressors, filters, piping, indicator lights, mounting hardware, meters, valves, and fittings, and laboratory equipment and components. See TE E-7 for a list of major components.

HAAF has one (1) return activated sludge sanitary wastewater treatment plant (WWTP), four (4) drying beds, rotary fan press, and numerous septic tank and leachfield systems located throughout the installation. The STP/WWTP utilizes aerated grit removal and a comminutor for pretreatment. Pretreatment is followed by primary sedimentation and secondary treatment utilizing the “Conventional Activated Sludge” process. The treatment plant was built in the 1940’s and has a design flow of 1.25 MGD. The average daily flow is approximately 0.3 MGD. Solids handling is by aerobic sludge digestion followed by running through Rotary Fan Press with drying beds used as a emergency backup. Final disposal is by land filling to the appropriate landfill.

FS wastewater treatment units include an Industrial Wastewater Treatment Plant (IWWTP), four (4) land application systems (LAS), an Industrial Waste Equalization/Holding Pond, and numerous septic tank and leachfield systems located throughout the installation. In addition, FS is responsible for its sanitary sewage collection system leading to a Privately Owned Treatment Works (POTW) which is ran by the City of Hinesville. Septic tank sludge is discharged to the POTW and requires coordination with the POTW Operators. Septic tanks are cleaned out by a separate contract but are maintained by this PWS. Septic tank sludge is discharged to the POTW, requiring coordination with POTW operators.

Refer to Master Plans Existing Condition Maps in the Technical Library, Bldg. 1021 at HAAF and Bldg. 1114 at FS for location of wastewater systems.

1.3 Work Management and Control.

1.3.1 Reporting Requirements.

1.3.1.1 The Contractor shall submit to the Contracting Officer (KO) for approval, a plan for accomplishing the Sanitary Wastewater Treatment and Collection System operation described in this Performance Work Statement (PWS) during the phase in period, within fifteen (15) days after award.

1.3.1.2 The Contractor shall prepare and submit to the Contracting Officer’s Representative (COR) or Alternate Contracting Officer’s Representative (ACOR) by the tenth (10th) day of each month a copy of DA Form 4247, Facilities Engineering Operating Log (Sewage General)), and DA Form 4178, Facilities Engineering Operating Log (Sewage Supplementary) (Deliverable H002). The Contractor shall also maintain a daily operator's log notebook that includes routine operational duties, unusual conditions, accidents, and complaints. The Contractor shall submit an Annual Bio-Solids Report to the COR/ACOR not later than (NLT) February 15.

1.3.1.3 The Contractor shall maintain the annual bio-solids and the drying bed percent solids hauling reports and provide to the COR upon request.

1.3.1.4 The Contractor shall perform an annual Discharge Monitoring Report-Quality Assurance (DMR-QA) Studies required by the EPA. The Contractor shall use the EPD approved DMR-QA Bench Sheets which are provided by the Government. Provide a written corrective action report to the COR/ACOR explaining any parameter results that are “Not Acceptable” and resample for that parameter.

1.3.2 Certification. The Contractor shall provide certified operators in compliance with Federal, GA Department of Public Health, and Environment Regulations and Permits IAW PWS Section 7, and PWS paragraph 2.1.11.1.4.

1.3.3 Monitoring Systems. The wastewater and storm water drainage systems are equipped with Supervisory Control and Data Acquisition (SCADA) or other comparable monitoring systems at lift stations. The Contractor shall monitor the alarm systems. The Contractor shall develop a monitoring system response plan. The plan shall identify the Contractor’s response to an incident. In the event of an alarm, the alarm panel will signal the nearby audible and visible devices, whereby appropriate Contractor points of contact will be notified. The Contractor shall have a plan that is immediately implemented to safeguard the wastewater and storm systems. TE E-24 provides a listing of current SCADA alarms at the installations. The current monitoring systems are located at the CEP at Fort Stewart and Wast Water Treatment Plant at HAAF.

2.0 Description of Services.

The Contractor shall operate the sanitary wastewater treatment and collection system and components in accordance with (IAW) AR 4201, TM 58141 (Sanitary and Industrial Waste Water Collection - Gravity Sewers and Appurtenances), TM 58142 (Sanitary and Industrial Wastewater Collection - Pumping Stations and Force Mains), Operations & Maintenance (O&M) manuals, PWS Section 7, and manufacturer’s specifications.

2.1 STP/WWTP Operation. The Contractor shall operate the STP/WWTP 24 hoursperday, every day of the year. Operations shall be in compliance with NPDES permit numbers GA0027588 and GA0004308. Any violation of the NPDES permit standards shall be reported to the KO within one (1) hour of the incident with a detailed explanation of the noncompliance. The Contractor shall begin performing the actions required by the permit within 15 minutes of notification, and continue through completion. The Contractor shall minimize discharge and continue corrective action if the EPA withdraws authorization to discharge from the wastewater treatment facility. Typical daily operating tasks shall include, but not be limited to, the following: scum box pumping, clarifier washing, chemical feed and dosage rate adjustments, repacking of pumps, changing of charts, preparing sludge beds, coordinating with the Directorate of Public Works (DPW) for sludge removal, calibration and adjustment of electric and electronic controls, etc. The Contractor shall service portable latrines or pump sand traps in emergencies at the direction of the KO.

2.1.1 The Contractor shall ensure operation of the STP/WWTP is under supervision of a certified operator that holds a classification consistent with the plant classification specified by Subparagraph 391-3-6-12 of the Rules and Regulations for Water Quality Control and/or PWS paragraph 2.1.11.1.4, whichever is more stringent. Perform continuous wastewater treatment plant operation IAW the most current edition of Standard Methods for the Examination of Water and Wastewater, O&M manuals and plans, manufacturer’s specifications, and Environmental permits.

2.2 Laboratory Testing. Most of the lab testing will be conducted by an outside agency, however, the Contractor shall maintain the laboratory used for testing at HAAF in Bldg. 1021, IAW requirements established in NPDES permit numbers GA0027588 and GA0004308. The Government reserves the right to collect or to require the Contractor to collect and submit to any laboratory designated by the Government, additional samples from any point in the wastewater systems at any time. Upon request, the Contractor shall deliver the samples to the laboratory, in sealed containers identifying the precise date, place, and time the sample was collected, pH and temperature of the sample at the time of collection, and the name of the Contractor employee who collected the sample.

3.0 Industrial Wastewater Treatment Plant (IWWTP).

3.1 Scope.

3.1.1 Industrial Wastewater Treatment Plant (IWWPT). The Industrial Waste Collection System (IWCS) consists of multiple collection lines from motor pool wash racks. The discharge outlet of the IWWTP goes into Mill Creek. Industrial Wastewater Treatment facilities are located at FS (Bldgs. 1832, 4420, 4421, 4422, 246, 248, 4507, and 1165). Due to the variation in flow and the large amounts of suspended solids in the industrial wastewater, equalization basins are provided at the treatment plant site for settling, solids, flow equalization, storm water storage, and oil removal. Aerated biological ponds are provided at the IWWTP site to remove Biochemical Oxygen Demand (BOD) prior to discharge to the Mill Creek. Rags, suspended solids and oil are removed prior to discharge to the equalization basins, under dry weather conditions.

3.1.2 Lift Stations. The Contractor shall perform maintenance on sewage lift stations, listed in TE E-3 and E-4

3.1.3 Equalization Basins. Due to the variation in flow and the large amounts of suspended solids in the industrial wastewater, equalization basins are provided at the treatment plant site for settling, solids, flow equalization, storm water storage, and oil removal.

3.1.4 Biological Ponds. Aerated biological ponds are provided at the IWWTP site to remove Biochemical Oxygen Demand (BOD) prior to discharge to the Mill Creek.

3.1.5 Free Oil Separator (FOS) Facility. Rags, suspended solids, and oil are removed prior to discharge to the Equalization Basins, under dry weather conditions.

3.1.5.1 The Contractor shall inspect, pump, clean and maintain oil water separators listed in TE’s E-31 and E-32.

3.1.5.2 The Contractor shall inspect all oil water separators semi-annually. Measure oil floating on top of the water inside the oil water separator; when there is two (2) inches or more of oil in any chamber, the oil will be removed.

3.1.5.3 The Contractor shall clean the oil water separator when the sludge depth in the bottom of the separator exceeds eight (8) inches in depth. Ensure maintenance and cleaning of the coalescing plates inside the oil water separator are IAW the manufactures’ O&M manuals. Dispose of oil and sludge IAW local and state standards.

3.1.5.4 The Contractor shall maintain records for each oil water separator which include the date and time of each inspection, oil depth, sludge depth, details of any repairs and any other records pertaining to oil and sludge removal of the separator. The Contractor shall make records available for review upon request of the Government.

3.2 Components. IWWTP equipment and components include, but are not limited to: mechanical bar screens and grit collection system, recirculating systems, chemical storage and pumping systems, channel and gate bypass systems, pumping and distribution systems, electrical and digital control systems, alarm systems, valves, piping and fittings, controllers, and regulators. IWWTP repairs include, but are not limited to: removing visible corrosion, rust, fatigue, breaks, leaks, blockages, unusual noise, vibration, temperatures, levels, and hazardous conditions. The IWWTP is subject to compliance inspections at any time without prior notification.

3.3 Work Management and Control.

3.3.1 Reporting Requirements.

3.3.1.1 The Contractor shall collect samples for analysis IAW the IWWTP O&M Plan, applicable NDPES Permits, and as requested by the COR. Prepare samples and submit to appropriate laboratory for analysis. Record test results on the Operation Monitoring Reports and submit to the KO or COR NLT the tenth (10th) day of each month.

3.3.1.2 The Contractor shall submit a monthly report of samples to the COR/ACOR NLT the tenth (10th) calendar day of the following month.

3.3.1.3 The Contractor shall perform and record all monitoring IAW the maintenance plan. Wastewater monitoring equipment and procedures shall meet or exceed criteria in the Standard Methods for the Examination of Water and Wastewater for chemical analysis. The Contractor shall follow the proper chain of custody procedures. Monitoring results shall be recorded and filed daily.

3.3.1.4 The Contractor shall read the sewage flow meters and chart recorders daily. The Contractor shall record readings on operating logs and change the flow recorder charts when the chart is complete. The Contractor shall take steps within 24 hours to repair any wastewater flow meter or chart recorder required by permit that is found to be inoperative.

3.3.1.5 The Contractor shall weigh all wastewater grit and sludge prior to disposal and record on monthly Operation Monitoring Reports.

3.3.1.6

3.4 Services.

3.4.1 IWWTP Operation. The Contractor shall keep the IWWTP in continuous operation and meet or exceed manufacturers O&M manual requirements. IWWTP shall be capable of processing to its rated treatment capacity. The Contractor shall notify the COR/ACOR within one (1) hour of initiating a system bypass, and again within one (1) hour after the system is returned to normal operating condition. Process waters, sludge, or lubricating oil shall not leak except as noted in O&M manuals, and manufacturer’s specifications. Discrepancies identified during operational tours shall be resolved upon discovery. Waste containers shall not be permitted to overflow.

3.4.1.1 Operation includes, but is not limited to, the following: operational checks of lift stations, scheduling sedimentation basin cleaning, and coordination with the STP for transferring excess water from the central vehicle wash facilities (CVWF) to the industrial lagoons. The Contractor shall provide annual laboratory analysis of sedimentation basins sludge for DPW Environmental Division required test, with the requirement to retest if sludge proves to be hazardous. This task shall be accomplished within seven (7) calendar days after request from the KO or COR/ACOR. The Contractor shall coordinate with the DPW for the disposal of sludge.

3.4.2 Samples. The Contractor shall collect samples for analysis IAW the IWWTP, O&M plan, State Permits, and PWS Section 7 and as requested by the KO. The Contractor shall prepare samples and submit to the appropriate laboratory for analysis.

3.4.3 Systems and Components Operation. The Contractor shall operate IWWTP systems and components IAW O&M manuals, manufacturer’s specifications, and TM 58143, Domestic Wastewater Treatment Plant Laboratory Guidance. The Contractor shall notify the COR/ACOR of system bypasses and again after the system is returned to normal operation.

3.4.4 On-Site Operator. Not Applicable.

3.4.5 Operational Tours. The Contractor shall perform operational tours to evaluate plant operation and lift stations seven (7) days a week. The Contractor shall perform continuous wastewater treatment plant operation IAW the most current edition of Standard Methods for the Examination of Water and Wastewater, O&M manuals, and manufacturer’s specifications.