Attachment D- Annex L to OPORD 18-011 Wastewater Services.pdf

Annex L

Wastewater Services

01 Jan 2025

Table of Contents

1.0 GENERAL INFORMATION

1.1 Overview

1.2 Components

1.3 Work Management and Control

1.3.1 Reporting Requirements

1.3.2 Certification

2.0 DESCRIPTION OF SERVICES

2.1 STP Operation

2.2 Laboratory Testing

3.0 INDUSTRIAL WASTEWATER TREATMENT PLANT (IWTP)

3.1 Scope

3.1.1 Industrial Wastewater Treatment Plant (IWPT)

3.1.2 Lift Stations

3.1.3 Equalization Basins

3.1.4 Biological Ponds

3.1.5 Free Oil Separator (FOS) Facility

3.2 Components

3.3 Work Management and Control

3.3.1 Reporting Requirements

3.4 Services

3.4.1 IWTP Operation

3.4.2 Samples

3.4.3 Systems and Components Operation

3.4.4 On-Site Operator

3.4.5 Operational Tours

1.0 General Information.

1.1 Overview. The Fort Carson sanitary wastewater treatment and collection system collects and delivers sanitary wastewater to the Sewage Treatment Plant (STP) from the installation by means of collection lines, sewer mains, and lift stations. TE-H.2.11A STP Description, is a brief description of the STP. TE-H.2.10.3, Sump_Lift Station Locations, lists locations and numbers of lift stations.

1.2 Components. Sanitary wastewater treatment and collection system components include, but are not limited to, 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.

Domestic sewage from Fort Carson is approximately 2.5M gallons per day (gpd). The Contractor's maintenance responsibility is referenced in TE-H.2.11C Manhole Cardinal Directions, TE-L.1.2 Sanitary Sewer Manhole Locations and TE-H.2.11B PCMS and Fort Carson Sewer Manhole Graphic. The maintenance boundary are all active lines within the installation. The Contractor’s responsibility in the housing areas shall be limited to main lines and manholes.

The STP utilizes primary, secondary, and tertiary treatment that removes ninety seven to ninety nine percent (97-99%) of Biochemical Oxygen Demand (BOD) and ninety seven (97%) removal of total suspended solids (TSS). Currently, the average flow is

2.5 million gallons per day (mgd). The STP design is 4.5 mgd and is intended to satisfy requirements of the current National Pollutant Discharge Elimination System (NPDES), permit numbers CO-0021181 and COG-652000. A brief description of the major operational units in the STP can be found in TE-H.2.11A STP Description.

1.3 Work Management and Control.

1.3.1 Reporting Requirements.

1.3.1.1 The Contractor shall submit to the COR for approval, a plan for accomplishing the Sanitary Wastewater Treatment and Collection System operation described in this Performance Work Statement (PWS) (P-L.1.3.1.1, SWTP Operations Plan (Reference TE-A.6.1, Consolidated Contractor Plans)).

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) TE-H.2.11.3 IWTF Checklist and TE-H.2.11.3A STP Checklist. 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 not later than (NLT) February 15 (D-L.1.3.1.2A, Annual Bio-Solids Report).

1.3.2 Certification. The Contractor shall provide certified operators in compliance with Federal, Colorado Department of Public Health, and Environment Regulations.

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. Sample maintenance cycles checklists are in TE-H.2.11.3 IWTF Checklist and TE-H.2.11.3A STP Checklist.

2.1 STP Operation. The Contractor shall operate the STP 24 hours per day, every day of the year. Operations shall be in compliance with NPDES permit numbers CO- 0021181 and COG-652000. Any violation of the NPDES permit standards shall be reported to the KO within two (2) hours of the incident with a detailed explanation of the noncompliance D-L.2.1 Permit Violation Incident. Typical daily operating tasks shall include, but not be limited to, the following: scum box pumping, clarifier washing, UV tube changing and cleaning, 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.

2.2 Laboratory Testing. The Contractor shall operate and perform laboratory testing in the Sewage Treatment Plant laboratory, Building 3912, IAW requirements established in NPDES permit numbers CO-0021181 and COG 6520000, and additional standard plant operational analysis. Testing shall include, but not be limited to, the following:

suspended solids (SS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), cadmium (Cd), pH, percent solids, volatile solids, Dissolved Oxygen (DO), nitrite, nitrate, ammonia, chlorine residual, BioMonitoring, and fecal coliform. The Contractor shall, two (2) times per year, analyze digested sanitary sludge for Priority Pollutants and Toxic Compounds Leaching Procedure (TCLP). The Contractor shall maintain laboratory worksheets with results of analysis. The STP laboratory will be certified to conduct fecal coliform analysis IAW State standards.

3.0 Industrial Wastewater Treatment Plant (IWTP).

3.1 Scope.

3.1.1 Industrial Wastewater Treatment Plant (IWPT). The Industrial Waste Collection System (IWCS) consists of approximately (124,063) linear feet of six to twelve inch (6" file:///C:%5CUsers%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CTemporary%20Internet%20Files%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CTemporary%20Internet%20Files%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CDocuments%20and%20Settings%5Cmary.l.hudson%5CLocal%20Settings%5Cterry.hagen1%5CLocal%20Settings%5Ctuckeraj%5CLocal%20Settings%5CTemporary%20Internet%20Files%5COLK54%5CTE-5-070%20Sample%20STP%20Checklist.xls file:///C:%5CUsers%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CTemporary%20Internet%20Files%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CTemporary%20Internet%20Files%5Cterry.hagen1%5CAppData%5CLocal%5CMicrosoft%5CWindows%5CDocuments%20and%20Settings%5Cmary.l.hudson%5CLocal%20Settings%5Cterry.hagen1%5CLocal%20Settings%5Ctuckeraj%5CLocal%20Settings%5CTemporary%20Internet%20Files%5COLK54%5CTE-5-070%20Sample%20STP%20Checklist.xls to 12") collection lines from industrial facilities such as motor pool wash racks, hangers, and non-vehicle facilities.

3.1.2 Lift Stations. TE-H.2.10.3 Sump_Lift Station Locations provides a description and location of current sump and lift stations.

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 IWTP site to remove Biochemical Oxygen Demand (BOD) prior to discharge to the STP.

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.

3.2 Components. IWTP 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. The IWTP is subject to compliance inspections at any time without prior notification. IWTP operations include, but are not limited to, checking, evaluating, adjusting and maintaining operating pressures, levels, pump rates, temperatures, and process efficiencies based on environmental and fluctuating load conditions. A sample IWTP checklist is at TE-H.2.11.3 IWTF Checklists.

3.3 Work Management and Control.

3.3.1 Reporting Requirements.

3.3.1.1 The Contractor shall submit to the KO and COR/ACOR an operation plan for IWTP work described herein. P-L.3.3.1.1 IWTP Operations Plan (Reference TE-A.6.1, Consolidated Contractor Plans).

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. D-L.3.3.1.2 Monthly IWTP Samples

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 and the standard used by Fort Carson for chemical analysis. The Contractor shall follow the proper chain of custody procedures. Monitoring results shall be recorded and filed daily.

3.4 Services.

3.4.1 IWTP Operation. The Contractor shall keep the IWTP in continuous operation.

IWTP 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 D-L.3.4.1 System Bypass Notification. Process waters, sludge, or lubricating oil shall not leak except as noted in O&M manuals. 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 D-L.3.4.1.1 Sedimentation Sludge Tests. 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 IWTP, O&M plan, regulatory requirements 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 IWTP systems and components IAW O&M manuals, and TM 5-814-3, 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. The Contractor shall provide an on-site operator that possesses a facilities operator certificate IAW Article 9, 25 CRS Colorado Department of Public Health Regulation, 100 and 85. The on-site operator shall provide support 24 hours a day, 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.

3.4.5 Operational Tours. The Contractor shall perform operational tours to evaluate plant operation and lift stations. The Contractor shall perform operational tours to evaluate plant operation and lift stations. This includes but not limited to offsite visitors, college tours, and regulatory agencies etc

1.0 General Information.