water and sanitation concession agreement - example 1 annexures ...

SEPTIC TANK
Septic Tank / VIP (ventilated improved pit latrine) clearance by sucker truck - [AMOUNT AND CURRENCY] (adequate vehicular
access must be provided by the user for this service to be provided). Call out charge of [AMOUNT AND CURRENCY] will be levied
should vehicular access not be adequate.
RECEIPT OF SEWAGE
For receipt of sewage transported by tanks other than in 6 above - [AMOUNT AND CURRENCY] per kilolitre.
DISCHARGE OF “WET” INDUSTRIAL EFFLUENT
(Industries which use or generate a considerable quantity of water)
The owner of or occupier of premises on which any trade or industry identified by the Concessionaire as a “wet” trade or industry, is
carried out and from which as a result of such trade or industry or of any process incidental thereto, any effluent is discharged into the
sewer, shall in addition to the fixed Charges set out in table 1.2.1 for which he is liable in terms of this determination, pay to the
Concessionaire in place of the variable Charges set out in table 1.2.2 an amount calculated on the quantity of water consumed during
the period and in accordance with the Treatment Charge Formula and the Disincentive Formula set out hereunder -
Treatment Charge Formula
To = C(Q i )/(Qt)(0,31 + 0,22Kc + 0,27Ks +0,20Kn)
Where
To = Charges due by an individual contributor
C = Total capital redemption, interest, operation and maintenance cost of the sewage treatment works set by the
Concessionaire
Qi = Sewage flow from an individual contributor (megalitre per day)
Qt = Total sewage flow in the system (megalitre per day)
Kc = COD i /COD t
Ks = SSi/SSt
Kn = Ni/Nt
COD i = Chemical oxygen demand of the settled sewage originating from the contributor (milligrams per litre)
40
PPP in Infrastructure Resource Center for Contracts, Laws and Regulations (PPPIRC)
Reviewed: Victoria R. Delmon, LEGPS
http://www.worldbank.org/ppp November 2007