J-1604000 Wastewater.pdf

SECTION J-1604000

WASTEWATER

ATTACHMENT

NUMBER

ATTACHMENT TITLE

J-1604000-01 DEFINITIONS AND ACRONYMS

J-1604000-02 REFERENCES AND TECHNICAL DOCUMENTS

J-1604000-03 WASTEWATER SYSTEM DESCRIPTION

J-1604000-04 WASTEWATER SYSTEM ASSET DATA

J-1604000-05 WASTEWATER UTILITIES OVERVIEW DOCUMENT

J-1604000-06 HISTORICAL CHEMICAL AND MATERIALS USAGE

J-1604000-07 MARYLAND DEPARTMENT OF THE ENVIRONMENT (MDE) STATE

DISCHARGE PERMIT

J-1604000-08 WWTP SAMPLING AND TESTING REQUIREMENTS

J-1604000-09 SAMPLE SLUDGE ANALYSIS REPORT AND SLUDGE GENERATOR REPORT

J-1604000-10 SAMPLE OPERATING REPORTS

J-1604000-11 DRY-BINNING SEMI-SOLIDS AND LIQUID WASTE LOCATIONS

J-1604000-12 SPILL EVENT RESPONSIBILITY DIAGRAMS AND SPILL CONTINGENCY PLAN

J-1604000-13 USNA AND NSAA STORMWATER MAPS

J-1604000-14 STORMWATER MANAGEMENT REPORT-ANNAPOLIS JANUARY 2017

J-1604000-15 PERMEABLE PAVEMENT AREAS

ATTACHMENT J-1604000-01

DEFINITIONS AND ACRONYMS

SEE SEPARATE ATTACHMENT J-0200000-01

ATTACHMENT J-1604000-02

REFERENCES AND TECHNICAL DOCUMENTS

SEE SEPARATE ATTACHMENT J-0200000-03

ATTACHMENT J-1604000-03

WASTEWATER SYSTEM DESCRIPTION

The NSAA wastewater system includes all mechanically and electrically interlocked ancillary parts, equipment, and components required for safe and continuous operation of wastewater collection, transport, and treatment, including but not limited to: piping, manholes, wet wells, lift stations, vaults, alarm devices (to include SCADA), floats, antennas, auxiliary generators, oil water separators, grease interceptors, tanks, aerators, valves, clarifiers, controls, control panels, meters, data recorders, monitoring equipment, chemicals, membrane bio reactors, digesters, drying beds, surge basins, holding tanks, storage areas, pumps, chemical injector systems, screens, air compressors, transmitters, batteries, etc.

The wastewater treatment plant (WWTP) and collection systems at Naval Support Activity Annapolis exist as two different wastewater subsystems:

• Naval Station Annapolis (NSA) on the north side of the Severn River

• The upper and lower yards on the south side of the Severn River

Both systems are known and mapped. The collection systems are made of differing materials including but not limited to terra cotta, PVC, and cast-iron pipes and range from 4 inches to 24 inches in diameter. Naval Station Annapolis wastewater treatment plant and collection system is located north of the Severn River and collects and processes an average of 80,000 gallons of wastewater daily. The membrane bioreactor at the wastewater treatment plant is sized to process up to 200,000 gallons of sewage per day. The collection system on NSA collects a combined residential, commercial, and industrial wastewater flow. NSA owns the collection system except for one lift station located on Annapolis Partners property [AK2.1] (formerly known as the David Taylor complex) that flows into the NSA collection system. Seventeen lift stations collect fluid from low areas of the base and pump up to higher elevation points in the collection system where they empty into manhole vaults that gravity feed the fluid to the WWTP. All lift stations are designed with duplex pumps for redundancy and high-level monitoring alarm systems are monitored 24/7 at the central heat plant (CHP). Fluid flows by gravity through the collection system to one collection point at the head of WWTP. Fluid flows through a rag removal basket and then into Pump Station 1 (PS1). From PS1 fluid passes to two (2) 150,000-gallon surge basins, primary clarifiers, Pump Station 2 (PS2), to the membrane bioreactor (MBR), chlorine contact chamber, to final manhole for composite sampling. After the sampling area, it flows out to the tee manifold for dilution into Carr Creek. In the process of the WWTP system operation, wet sludge is generated at a rate of approximately 6,000 gallons per week and dry sludge of 100-150 tons per year. The Contractor must haul wet and dried sludge off the property [AK3.1] [AK3.2] for proper disposal as needed [AK4.1], [AK4.2]. Micro-C, caustic soda, and ferric chloride are stored and injected into the MBR for proper operation and to meet NPDES permit requirements.

The wastewater collection system that is located on the “yard”, south of the Severn River is discussed as one system, but is piped in a way that it is divided into two separate subsystems: upper and lower yard. College Creek is the natural dividing line. No sewage pipes connect the upper yard and lower yard under College Creek. The upper- and lower-yard collection systems include housing, academic buildings, and base operations buildings, and flow is approximately 150,000 kGAL annually. The upper yard collection system is constructed of four lift stations, forced mains and gravity collection piping. Fluid flows from collection points west of MD State RT. 450 and to the City of Annapolis at the West Annapolis connection point on Badgers Rd. All other flows in the collection system on the upper yard are collected and flow to the Navy Two sewage flume owned by City of Annapolis located behind Perry Center. The lower yard collection system includes 13 lift stations, forced mains, and gravity collection piping.

[AK5.1] All flows converge at Navy One sewage flume, owned by City of Annapolis. All lift stations and multiple manholes [AK6.1] have alarm systems that are monitored 24/7 by the central heat plant (CHP). All lift stations are designed with duplex pumps.

Wastewater System Asset Data is provided in J-1604000-04.

A wastewater utilities graphic overview document is also provided upon request as a separate attachment after award. This document is purely supplemental and diagrammatical in nature. It is not necessarily an accurate representation of the current system configuration but may assist in understanding the overall system. Refer to J- 1604000-05 Wastewater Utilities Overview Document.

ATTACHMENT J-1604000-04

WASTEWATER SYSTEM ASSET DATA

SEE SEPARATE ATTACHMENT J-1604000-04

ATTACHMENT J-1604000-05

WASTEWATER UTILITIES OVERVIEW DOCUMENT

J-1604000-05 IS TO BE PROVIDED UPON REQUEST AFTER AWARD

ATTACHMENT J-1604000-06

HISTORICAL CHEMICAL AND MATERIAL USAGE

MONTHLY HISTORICAL AVERAGES (ESTIMATED)

MATERIAL QUANTITY

Caustic Soda 25% 1,000 GAL/Month Micro C 2000 1,000 GAL/Month Ferric Chloride 100 GAL/Month Citric Acid 500 GAL/Month Hypo Chloride 500 GAL/Month Cold Weather Bio/COD LT (Oct-May) 400 LBS/Month

ATTACHMENT J-1604000-07

MARYLAND DEPARTMENT OF THE ENVIRONMENT (MDE) STATE DISCHARGE PERMIT

SEE SEPARATE ATTACHMENT J-1604000-07

ATTACHMENT J-1604000-09

SAMPLE SLUDGE ANALYSIS REPORT AND SLUDGE GENERATOR REPORT

SEE SEPARATE ATTACHMENT J-1604000-09

ATTACHMENT J-1604000-10

SAMPLE OPERATING REPORTS

SEE SEPARATE ATTACHMENT J-1604000-10

ATTACHMENT J-1604000-11

DRY-BINNING SEMI-SOLIDS AND LIQUID WASTE LOCATIONS

J-1604000-11 IS TO BE PROVIDED UPON REQUEST AFTER AWARD

ATTACHMENT J-1604000-12

SPILL EVENT RESPONSIBILITY DIAGRAMS AND SPILL CONTINGENCY PLAN

J-1604000-12 IS TO BE PROVIDED UPON REQUEST AFTER AWARD

ATTACHMENT J-1604000-13

USNA AND NSAA STORMWATER MAPS

J-1604000-13 IS TO BE PROVIDED UPON REQUEST AFTER AWARD

ATTACHMENT J-1604000-14

STORMWATER MANAGEMENT REPORT-ANNAPOLIS JANUARY 2017

SEE SEPARATE ATTACHMENT J-1604000-14 (01 – 03)

ATTACHMENT J-1604000-15

PERMEABLE PAVEMENT AREAS

SEE SEPARATE ATTACHMENT J-1604000-15