I-DEV0432: Request for deviation on the monitoring of the Chemical Oxygen Demand (COD) for untreated and treated wastewater
|Submitted by||SIRIM (12 Aug 2011)|
|Project activity||2130: Methane Recovery in Wastewater Treatment, Project AIN07-W-04, Sumatera Utara, Indonesia|
|Selected monitoring period||01 Mar 2010 - 28 Feb 2011|
|Title/subject of deviation||Request for deviation on the monitoring of the Chemical Oxygen Demand (COD) for untreated and treated wastewater|
The request for deviation is for a registered CDM project activity “Methane Recovery in Wastewater Treatment, Project AIN07-W-04, Sumatera Utara, Indonesia” (project reference number 2130), which was registered against AMS-III.H version 7 on 16/01/2009. During the second periodic verification, as per the requirement of VVM para 210, SIRIM QAS Intl. found that the project participant (PP) had deviated from the provisions of the registered monitoring plan. The deviation was as follows:
In the Monitoring Plan of the registered PDD (page 25 and 26), for the monitoring of CODuntreated and CODtreated, the following additional statement has been included under the QA/QC procedure to be applied : “In addition, internal sampling on a monthly basis will be conducted to ensure proper digester operation”.
During the second monitoring period i.e 1 March 2010 to 28 February 2011, the internal sampling was not carried out for the months of April, June, July, August and December 2010.
The deviation do not require revision of the monitoring plan or change from the project activity, as the internal monthly sampling has being carried out as specified in the plan beginning from 1 March 2011.
The internal monthly samplings were meant for the monitoring of the digester operation. According to the Monitoring Plan, only the COD analysed semi annually by a third party laboratory was to be used in the calculation of the ER, hence the monthly samplings shall not bear any impact to the estimates of the emissions reductions for the project activity.
Since the analysis of the samples were also sent to external accredited laboratory, PP had decided to include the COD values monitored in the calculation of the average COD for the monitoring period. This is found to be conservative as more average of more data would results in a more accurate average value of the COD, and hence would give a more accurate ER estimation. Furthermore, the internal monthly samplings analyses were also carried out by the external accredited laboratory.
The methodology (AMS-III.H version 7) did not specify the QA/QC procedure for the monitoring of the digester operation. Therefore, this deviation does not change the applicability of the methodology.
|Link to the documentation made available at validation stage or monitoring report||Link to relevant documentation|
|Signed form||Signed form (327 KB)|
This request for deviation has been accepted.
The Chairs have accepted the proposed request for deviation to the monitoring and reporting process for the second monitoring period, from 1 March 2010 to 28 February 2011, provided that the DOE demonstrates in its verification report that the digester was operating during the five months when no monthly CODy,ww,untreated and CODy,ww,treated determinations were performed.
|Current status||28 Nov 2011 - Deviation accepted|
12 Aug 2011 -
07 Sep 2011 - Successfully passed the Completeness Check
21 Sep 2011 - Awaiting DOE input
29 Sep 2011 - Clarifications received
13 Oct 2011 - Awaiting DOE input
25 Oct 2011 - Clarifications received
11 Nov 2011 - Awaiting EB decision
|2 clarification(s) provided on 29 Sep 2011|
|Response on clarification of RfD VAL 2 (588 KB)|
|VAL 2 - COD Comparison R1 (23 KB)|
|4 clarification(s) provided on 25 Oct 2011|
|2nd clarification - RfD VAL 2130 (705 KB)|
|COD values - CODtreated and CODuntreated (26 KB)|
|Renewable and Sustainable Bioenergies Production from POME (1683 KB)|
|Industrial Processes and the Environmental Handbook 3 (7443 KB)|