Attenuation pond · Drainage

Attenuation pond at km 10.0

Demo

MAD-PD-0002 · Concesiones de Madrid, Spain · Anticlockwise

Medium criticalityExpired

Condition: 1Very good; Index 93 of 100. Loses 0.8 a year.
Remaining life: 21 years; Installed 1997, 50-year life
Replacement value: €235k; 5,230 m³
Next inspection: 4 Nov 2026; In 4 daysLast inspected 4 Nov 2025

Inventory and condition

What it is and how it is wearing

Type: Attenuation pond (Drainage)
Construction: Vegetated retention pond
Quantity: 5,230 m³
Location: Concesiones de Madrid, Anticlockwise
Coordinates: 40.34668, -3.69844
Installed: 1997
End of design life: 2047

Component condition

InletVery good
Outlet controlVery good
EmbankmentVery good

Condition history

Inspected condition indexForecast to handback, 2029Bands show grades 1 (top) to 5.

Show as a table

Condition index at each inspection
Date	Index	Grade	Inspector
6 Nov 2017	99	Very good	Paula Serrano
6 Nov 2018	99	Very good	Álvaro Gil
6 Nov 2019	99	Very good	Paula Serrano
5 Nov 2020	97	Very good	Álvaro Gil
5 Nov 2021	97	Very good	Paula Serrano
5 Nov 2022	94	Very good	Álvaro Gil
5 Nov 2023	98	Very good	Paula Serrano
4 Nov 2024	95	Very good	Álvaro Gil
4 Nov 2025	93	Very good	Paula Serrano

People and organisations

Who is responsible for it

7 linked

OwnerContractorConsultantInsurerGrantor

Asset ownerElena Navarro, Concesiones de Madrid concession companyAccountable for condition, renewal and handbackelena.navarro@concesiones-de-madrid-concession-company.example
Asset managerCarmen Ortega, Concesiones de Madrid concession companyKeeps the record, plans inspections and workscarmen.ortega@concesiones-de-madrid-concession-company.example
Maintenance contractorJavier Moreno, Meseta MantenimientoRoutine and reactive maintenance, defect repairsjavier.moreno@meseta-mantenimiento.example
Inspection consultantPaula Serrano, Castilla IngenieríaPrincipal and general inspectionspaula.serrano@castilla-ingenieria.example
Original contractorManzanares ObrasWorkmanship warranty and defects liability
InsurerMeridian Infrastructure InsuranceProperty damage and third-party liability cover
GrantorRegional granting authority (Madrid)Receives the asset at handback in 2029

History

Inspections, works, defects and notes

Note: Note2 Jun 2026
Monitoring increased to quarterly until repair.
Carmen Ortega
Inspection: Drainage survey4 Nov 2025
Grade 1, index 93. Free-flowing; gullies clear.
Paula Serrano, Castilla Ingeniería
Inspection: Routine inspection4 Nov 2024
Grade 1, index 95. Free-flowing; gullies clear.
Álvaro Gil, Castilla Ingeniería
Inspection: Drainage survey5 Nov 2023
Grade 1, index 98. Free-flowing; gullies clear.
Paula Serrano, Castilla Ingeniería
Inspection: Routine inspection5 Nov 2022
Grade 1, index 94. Free-flowing; gullies clear.
Álvaro Gil, Castilla Ingeniería
Inspection: Drainage survey5 Nov 2021
Grade 1, index 97. Free-flowing; gullies clear.
Paula Serrano, Castilla Ingeniería
Inspection: Routine inspection5 Nov 2020
Grade 1, index 97. Free-flowing; gullies clear.
Álvaro Gil, Castilla Ingeniería
Inspection: Drainage survey6 Nov 2019
Grade 1, index 99. Free-flowing; gullies clear.
Paula Serrano, Castilla Ingeniería

Liability and warranty

Who pays if something goes wrong

19972001200520092013201720212025

Workmanship warrantyExpiredManzanares Obras1 Oct 1997 to 30 Sep 2000, ended 318 months ago. Materials and workmanship of the works.
Defects liability periodExpiredManzanares Obras1 Oct 1997 to 1 Oct 1999, ended 330 months ago. Defects notified by the concession company after handover.

Today

Liability by area

Who carries each liability
Liability	Responsible	Terms
Routine maintenance	Meseta Mantenimiento	Operations and maintenance contract, performance-based
Defects	Concesiones de Madrid concession company	All warranties expired; the concession company carries the risk
Renewal	Concesiones de Madrid concession company	End of design life around 2047
Third-party damage	Meridian Infrastructure Insurance	Costs recovered from the at-fault party where known; €5,000 excess
Handback condition	Concesiones de Madrid concession company	Grade 3 or better at handback in 2029

Handback

Handback to the grantor in 2029Regional granting authority (Madrid)

3RequiredFair or better1ForecastVery good

Forecast to meet the handback standard at the current rate of wear.

Claims

No claims recorded against this asset.

Nearest assets on Concesiones de Madrid

1Safety barrier at km 9.8MAD-SB-0004 · 0.2 km away
2Road markings at km 10.3MAD-RM-0005 · 0.3 km away
2Pavement section at km 9.4MAD-PV-0008 · 0.6 km away
1Pavement section at km 10.6MAD-PV-0009 · 0.6 km away
3Traffic sign at km 9.1MAD-TS-0002 · 0.9 km away

All 45 assets on Concesiones de Madrid

Illustrative record generated for the demo. Names, organisations, contacts, dates and amounts are fictional.

Loading asset record…

Date

Index

Grade

Inspector

6 Nov 2017

Very good

Paula Serrano

6 Nov 2018

Very good

Álvaro Gil

6 Nov 2019

Very good

Paula Serrano

5 Nov 2020

Very good

Álvaro Gil

5 Nov 2021

Very good

Paula Serrano

5 Nov 2022

Very good

Álvaro Gil

5 Nov 2023

Very good

Paula Serrano

4 Nov 2024

Very good

Álvaro Gil

4 Nov 2025

Very good

Paula Serrano

Liability

Responsible

Terms

Routine maintenance

Meseta Mantenimiento

Operations and maintenance contract, performance-based

Defects

Concesiones de Madrid concession company

All warranties expired; the concession company carries the risk

Renewal

Concesiones de Madrid concession company

End of design life around 2047

Third-party damage

Meridian Infrastructure Insurance

Costs recovered from the at-fault party where known; €5,000 excess

Handback condition

Concesiones de Madrid concession company

Grade 3 or better at handback in 2029

Attenuation pond at km 10.0

What it is and how it is wearing

Component condition

Condition history

Who is responsible for it

Inspections, works, defects and notes

Who pays if something goes wrong

Liability by area

Handback

Claims

Nearest assets on Concesiones de Madrid

Ask your asset

Ask your asset

Attenuation pond at km 10.0

What it is and how it is wearing

Component condition

Condition history

Who is responsible for it

Inspections, works, defects and notes

Who pays if something goes wrong

Liability by area

Handback

Claims

Nearest assets on Concesiones de Madrid

Ask your asset

Ask your asset