Key Largo Wastewater Treatment DistrictBoard of Commissioners Meeting

Agenda Item Summary

Meeting Date:

August 17, 2021

Agenda Item Type:

Information / Presentation

Agenda Item Scope:

Review / Discussion

Department:

Operations

Sponsor:

Department Managers

Subject:

Operations Report - July 2021

Summary of Discussion:

Department heads will present the monthly report.

Agenda Item Number: K-1

Recommended Action:

Discussion

J

\

Reviewed I Approved

Operations:

Customer Service:

Finance:

District Counsel:

District Clerk:

Engineering:

Financial Impact

Funding Source:

Budgeted:

N/A

Attachments

Monthly Report

Approved By:General Manager

Date

72

1

Key Largo Wastewater Treatment District

103355 Overseas Highway

305-451-4019

July 2021 Operations Report

73

KLWTD July 2021 Operations Report

2

Wastewater Treatment Plant Operations

The wastewater treatment plant processed an average of 2.11 million gallons of influent per day (MGD). The Treatment Plant remains in compliance with the Florida Department of Environmental Protection (FDEP) guidelines.

Effluent Quality Reports (mg/L) Determines the quality of discharge from the wastewater treatment plant.

Current Flow (MGD) The total flow of influent through the wastewater treatment plant each day.

Effluent Quality Report AWT Limit Annual Average

July 2021 Plant Performance

12 Month Average Plant Performance

CBOD5 (Carbonaceous Biochemical

Oxygen Demand) 5 1.48 1.61

TSS (Total Suspended Solids) 5 1.40 0.82

TN (Total Nitrogen) 3 1.75 1.54

TP (Total Phosphorous) 1 0.42 0.36

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Jul-1

Jul-2

Jul-3

Jul-4

Jul-5

Jul-6

Jul-7

Jul-8

Jul-9

Jul-1

0Ju

l-11

Jul-1

2Ju

l-13

Jul-1

4Ju

l-15

Jul-1

6Ju

l-17

Jul-1

8Ju

l-19

Jul-2

0Ju

l-21

Jul-2

2Ju

l-23

Jul-2

4Ju

l-25

Jul-2

6Ju

l-27

Jul-2

8Ju

l-29

Jul-3

0Ju

l-31

KLWTD Islamorada Combined Flow

74

KLWTD July 2021 Operations Report

3

Daily Peak Salinity (PPT) The daily peak salinity for the current month.

Islamorada Average Daily Flow: 0.85 million gallons per day Monthly Peak Salinity: 1.95 PPT Days over 4.0 PPT Salinity: 0

Wastewater Field Operations There was a total of 35 service calls for the current month. Of these, 15 were system generated alarms, mostly by low vacuum detection at a vacuum station. The system generated alarms were addressed quickly by the field staff. The reports below detail the remaining 20 calls.

Date Address Incident Response KLWTD Issue

July 2 988 Oleander Rd

Customer reported a possible backup and stated the bathroom

fixtures weren’t draining properly.

Pit and clean-out were checked there was no sign of

an issue. Pit was manually discharged and working

properly.

No

0.00.51.01.52.02.53.03.54.04.5

Jul-1

Jul-2

Jul-3

Jul-4

Jul-5

Jul-6

Jul-7

Jul-8

Jul-9

Jul-1

0Ju

l-11

Jul-1

2Ju

l-13

Jul-1

4Ju

l-15

Jul-1

6Ju

l-17

Jul-1

8Ju

l-19

Jul-2

0Ju

l-21

Jul-2

2Ju

l-23

Jul-2

4Ju

l-25

Jul-2

6Ju

l-27

Jul-2

8Ju

l-29

Jul-3

0Ju

l-31

KLWTD Islamorada Max Salinity

75

KLWTD July 2021 Operations Report

4

July 3 146 Long Key Rd.

Customer reported an odor coming from the sink and that their tub

was not draining.

Crew noticed that the clean-out was under pressure and

the pit was overwhelmed. Pit was cleared and diagnosed to

have a bad hose and dirty surge. Components were

changed. Pit back in working conditions after simulation.

Yes

July 4 60 Sunset Dr.

A pedestrian reported that the cleanout box

was pushed up by sewage.

The home is on a private system. The problem was

caused by a loose fitting on the homeowner’s side,

behind the cleanout box.

No

July 10 21 North Blackwater Ln.

Customer reported sewage coming from

the pit.

On arrival there was sewage coming from the pit. Breather

was pulled, the hoses were found to be rotted. Hose was changed and surge cleaned.

Pit was simulated and back in working condition.

Yes

July 12 811 Ocean Ave. Plumber reported that

the pit was not working.

Pit was overwhelmed due to a rusted tube in the breather

and a dirty surge. Components were changed.

No further issues with the pit.

Yes

July 14 19 North Ocean Dr.

Homeowner reported that their grinder

pump was not working.

On arrival, the pump was not working. Pump was replaced

with a spare. Yes

July 21 15 Mockingbird Rd.

Homeowner reported that they noticed odor

coming from Vac Station A for a few

days.

7/27 - Crews changed the carbon. 7/28 - Iron sponge media was removed and

replaced with carbon. The job was completed in two days to

take precaution with employee safety.

Yes

76

KLWTD July 2021 Operations Report

5

July 22 325 Calusa St. Unit 402

Customer reported a strong order coming

from the air terminal.

No odor was detected on arrival. As a precaution, crew

removed the breather and poured zep in sump.

No

July 23 181 South Ocean Shores Dr.

Homeowner called and stated there was

sewage coming from brown breather.

No mess was inside residence. Vactron was on sight to clean

up spillage on the road. Pit was found overwhelmed. Crew found that the valve

went bad causing pit to back up. Valve was changed and pit was simulated pit was back in

working conditions.

Yes

July 23 100600 Overseas Hwy.

Customer reported that the toilets were

emptying.

Pit was working properly. Not a KLWTD issue. No

July 23 230 Palm Dr. Customer reported a strong odor coming

from the air terminal.

A slight odor and a little grease build up were

detected. Zep was poured into sump to help with grease

smell.

No

July 23 100460 Overseas Hwy.

Customer reported a blockage in the street.

Issue was caused by a broken controller clip. Clip was

replaced and pit discharged by itself. Pit was manually discharged a few times.

Blockage cleared.

Yes

July 24 487 Beach Rd.

Customer reported a backup and that their

sinks were draining slowly.

System tech found there to be no vacuum at the pit, or at a pit down the street. Street valves were all found to be

open. The main valve at vacuum station JK was left

closed. The valve was opened to bring up the vacuum. The

tech was then able to discharge the pits.

Yes

77

KLWTD July 2021 Operations Report

6

July 26 23 Bonefish Ave. Homeowner reported an issue with her toilet

flushing.

Pit was found in working condition with no sign of a

backup in the cleanout. There was only an issue in one

upstairs bathroom. Homeowner was notified that the backup was on their side.

No

July 26 92680 Overseas Hwy.

Homeowner reported that the alarm on

grinder pump was on.

The grinder pump was simulated and found to be

functioning normal. No

July 27 92510 Overseas Hwy.

Customer reported that their shower and

toilets were not draining.

The home is connected to a District owned grinder pump

in the Unique Program. A contractor performing work at the house left the braker

off, which disconnected power to the pump. Power

was restored, and pump resumed normal operations.

No

July 31 12 Mockingbird Rd. Homeowner reported a fire alarm activated at Vacuum Station A.

Smoke was detected in the building. The issue was

caused by a broken oil cap that allowed hot oil to blow on the exhaust. A new cap

was installed. No damage was caused.

Yes

July 31 17 Judy Pl. Customer reported an overwhelmed pit.

The pit was overwhelmed due to a bad surge. Surge was

replaced, pit was simulated and back in working

condition.

Yes

July 31 122 South Bay Dr. Homeowner reported a noise after flushing

the toilet.

Pit was manually discharged and clean-out was checked,

no issue was found. No

July 31 136 Bahama Rd. Customer reported toilets not flushing

properly.

The pit was overwhelmed due to a dry lower sensor tube

hose. Hose was replaced, pit was simulated and back to

working condition.

Yes

78

KLWTD July 2021 Operations Report

7

Number of Wastewater Connections

Maintenance

SBR air diffuser pole repair The SBR air diffusers are mounted on racks submerged in the tanks. These racks are periodically lifted for inspection, cleaning, and maintenance. One of the poles that the winch and pulley system mounts to was damaged. The pole was removed, repaired, and reassembled.

5

9

57

9 86

16

710 11

5

0

5

10

15

20

79

KLWTD July 2021 Operations Report

8

Chlorine pump skid plumbing leak A section of the chlorine pump skid piping had a small leak. The damaged section of piping was replaced and tested.

80

KLWTD July 2021 Operations Report

9

Disk filter air conditioner unit repair A new air conditioning unit was installed on one of the disk filter control panels to replace a unit that stopped

cooling.

81

KLWTD July 2021 Operations Report

10

Dump truck evaporator coil repair A new AC evaporator coil was installed in the dump truck. A small leak was found in the old coil.

82