A07 Att 7 Water Wastewater Stormwater Ops and Maint.pdf

Attachment 7: Stormwater Operations and Maintenance

Attachment 7

Stormwater Operations and Maintenance

Base Operations and Maintenance

Rock Island Arsenal, Illinois

10 May 2020 i

Table of Contents

1.0 General Information

1.1 Overview

1.2 Work Management and Control

1.2.1 Personnel

2.0 Water System and Wastewater System Repairs

2.1 General Scope

3.0 Storm Water System Preventative Maintenance

3.1 General Scope

3.2 Specific Maintenance Tasks

3.2.1 Flood Pumps

3.2.2 Inlets/Catch Basins

3.2.3 Flood Gates

3.2.4 Storm Water Outfall Monitoring

3.3 Reporting Instructions for Storm Water System Preventative Maintenance

3.3.1 Flood Pump Report

3.3.2 Flood Gate Report

3.3.3 Storm Water Outfall Report

4.0 Flood Control Operations

4.1 General Scope

5.0 Overall Reporting Requirements

6.0 References

6.1 Technical Exhibits

1.0 General Information.

1.1 Overview.

The Contractor shall perform preventative maintenance and repairs on demand on the storm water system. This includes but is not limited to, flood pumps, inlet/catch basins, flood gates, and storm water outfall monitoring as required by this performance work statement.

The Contractor shall perform repairs on demand for the equipment on the water treatment and distribution system, wastewater treatment distribution and collection system; equipment shall be maintained by others.

1.2 Work Management and Control.

1.2.1 Personnel.

1.2.1.1 Water Treatment/Distribution System and Sanitary Sewage System Repairs.

The Contractor shall use licensed journeyman craftsperson or manufacturer certified craftsperson to conduct repairs as required.

1.2.1.2 Stormwater System Maintenance

The Contractor shall assign qualified, experienced, licensed and certified personnel to perform all the applicable maintenance requirements as required by this performance work statement.

The Contractor shall use licensed journeyman craftsperson or manufacturer certified craftsperson to conduct maintenance tasks as required.

2.0 Water System and Wastewater System Repairs.

2.1 General Scope.

The Contractor shall be responsible for repairs to all components of the water treatment system, water distribution system and wastewater distribution system.

The water treatment and distribution system components include but are not limited to, raw water pumping station (Building 9), Water Treatment Plant (Building 50), sludge holding facility (Building 71), sludge drying beds (Structure 42) and elevated storage tank (Structure 236), electrical, electronic, and digital systems and controls; level controls, control panels, switches, metering devices, pumps, motors, powdered activated carbon feeder, chlorinator, air dryer, compressors, SCADA system, feeders, turbidimeter, filters, piping, indicator lights, water distribution valves and fittings and backflow preventers. A list of all major components of the water system are identified in TE 7.1 and Water Distribution Valves in TE 7.10.

The wastewater 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, emergency generator, comminutor and laboratory equipment and components. A complete list of components can be found in TE 7.6, Major Components of Sanitary Sewer System.

3.0 Storm Water System Preventative Maintenance.

3.1 General Scope.

The storm drainage system, identified in TE 7.17 Storm Drainage System Map, consists of clay, reinforced concrete, steel, cast iron, corrugated metal, plastic, brick, and stone piping 4" thru 48" diameter. The system, which includes storm inlets and culverts, is approximately 110,000/7,000 AFH LF in length. The system also includes five (5) flood pumping stations. The Contractor shall be responsible for the specific maintenance tasks listed and repairs on demand.

3.2 Specific Maintenance Tasks

3.2.1 Flood Pumps.

The Contractor shall inspect, exercise, lubricate, and maintain the stationary flood pumps quarterly (March, June, September, and December). The Contractor shall clean the pump stations of any excess oil, including but not limited to the pump bases and floor of the pump buildings during the inspection and maintenance. The pumps shall be maintained IAW manufacturer’s recommendations. Pump information is listed in the TE

7.18 Flood Pump Information.

3.2.2 Inlets/Catch Basins

3.2.2.1 Inlet/Catch Basin Grate Cleaning.

The Contractor shall inspect, clean, and maintain the storm drainage inlets and catch basins monthly. The Contractor shall remove dirt and debris from the gratings of approximately 600/35 AFH inlets and catch basins during the monthly cleaning to ensure storm water flow.

3.2.2.2 Inlet/Catch Basin Cleaning.

The Contractor shall open and clean out catch basins annually. The Contractor shall maintain half of the approximately 600/35 AFH inlets/catch basins in April and the remaining half shall be maintained in September. The Contractor shall remove all dirt and debris from the inlets/catch basins and dispose of the debris off RIA.

3.2.3 Flood Gates.

The Contractor shall inspect, lubricate, exercise, and maintain flood gates on the storm drainage system annually during the months December - February. The Contractor shall conduct the maintenance below the six foot (6’) river stage.

The Contractor shall inspect and maintain the flood gates and conduct the following tasks annually:

a. Debris shall be removed from gate seats

b. Gate operators and shafts shall be lubricated

c. Gates operated over their full range of travel

d. Flapper gates shall have debris removed from the bearing area

e. Hinges shall be greased

3.2.4 Storm Water Outfall Monitoring.

The Contractor shall perform visual observations at designated storm water outfalls quarterly.

The locations for the visual observations are identified on TE 7.19, RIA Storm Water Outfall Names and Locations. There are 14 storm water outfalls. The Contractor shall use the outfall or nearest upstream manhole as the sampling/ observation point.

Each outfall shall be observed once per quarter during a single event. The Contractor shall ensure that all the outfalls are observed within each quarter. Quarter 1 begins October 1st.

The Contractor shall perform a visual outfall observation during any rainfall or snow melt event of 0.1 inch or greater magnitude. The observation must be conducted within in the first hour of the runoff or snow melt. An effective visual observation can be achieved by collecting a sample and observing it within 72 hours from when it was collected.

The Contractor shall observe the sample and if the observation returns an unusual result submit the sample to the KO/COR immediately. The Contractor shall return normal samples to the storm sewer.

3.3 Reporting Instructions for Storm Water System Preventative Maintenance.

3.3.1 Flood Pump Report.

The Contractor shall submit a report on the flood pumps quarterly. The report shall contain the date of inspection; inspector’s name; condition of the pump; repair recommendations and any additional relevant remarks. The Contractor shall submit the report five (5) business days after the end of each quarter.

3.3.2 Flood Gate Report.

The Contractor shall submit a report on the lift stations including the primary pumping station annually. The report shall contain the date of inspection; inspector’s name;

condition of the facility; condition of all equipment; repair recommendations and any additional relevant remarks. The Contractor shall submit the report annually ten (10) business days after the inspection.

3.3.3 Storm Water Outfall Report.

The Contractor shall submit a report on storm water outfall sampling quarterly (January, April, July, October). The Contractor shall record the observation/sampling on the form, TE 7.20 Stormwater Observation Report. The Contractor shall record the date, code, and any additional information in the comments section. The Contractor shall include in the comments section the probable cause of applicable code. The Contractor shall note any unusual results in the comments section also. The codes are listed in TE 7.19 RIA Storm Water Outfall Names and Locations. The Contractor shall submit the report five

(5) business days after the end of the quarter.

4.0 Flood Control Operations

4.1 General Scope

The Contractor shall perform flood control operations to ensure minimal damage due to installation facilities. The Contractor shall perform all flood response actions described in TE 7.21, RIA Flood Emergency Plan 2018 up to the 21 foot flood elevation. The Contractor shall be expected to perform these actions approximately twice per year for the duration of a flood event. The Contractor shall be required to operate and manage any pumps required by the plan for the duration of a flood event. The Contractor shall not be required to conduct any further flood response (requirements above the 21 foot flood elevation) or conduct flood patrols to monitor levees without a DMO or PWO.

5.0 Overall Reporting Requirements

a. Flood Pump Report

b. Flood Gate Report

c. Storm Water Outfall Report.

6.0 References

6.1 Technical Exhibits

a. TE 7.1 Major Components of Water System

b. TE 7.2 Unused

c. TE 7.3 Unidirectional Flushing Plan

d. TE 7.4 Unused

e. TE 7.5 Unused

f. TE 7.6 Major Components of Sanitary Sewer System

g. TE 7.7 Unused

h. TE 7.8 Unused

i. TE 7.9 Water Distribution System Map

j. TE 7.10 Water Distribution Valves

k. TE 7.11 Unused

l. TE 7.12 Hydrant Inspection Maintenance and Flushing

m. TE 7.13 Cross Connection Protection Devices

n. TE 7.14 Unused

o. TE 7.15 Sanitary Sewer Map

p. TE 7.16 Unused

q. TE 7.17 Storm Drainage System Map

r. TE 7.18 Flood Pump Information

s. TE 7.19 RIA Stormwater Outfall Names and Locations

t. TE 7.20 Stormwater Observation Report

u. TE 7.21 RIA Flood Emergency Plan 2018