Risk Matrix
Water Pollution Control Plant
(Phase I)

"A" = Actual Control "P" = Proposed Control

        CONTROLS                                                    
RISK MATRIX AUDIT OF THE WATER POLLUTION CONTROL PLANT - PHASE I C-1 Influent flow is measured after the bar screens and grit basins process. Magnetic meters only measure liquidity, therefore, influent equals effluent. C-2 Influent flow is measured by two new magnetic meters. C-3 The Regional Board has reviewed the calculations the Plant staff perform to arrive at effluent. C-4 Various meters track usage of effluent on in-house processes. C-5 Influent less the meters tracking in-house usage and effluent diverted to the SBWR project is the effleunt number that is reported to the Board. C-6 Dye tests determine the accuracy of the meter being tested and a certificate is issued stating the test conclusion. C-7 Plant staff informed the Regional Board of how effluent is calculated. C-8 Plant staff monitor flow trends which are generated by the computer system that monitors the entire Plant. C-9 Magnetic meters are re-calibrated based on a preventative maintenance schedule. C-10 Portable meters can be utilized if meters in place are not working properly. C-11 An inspector from the Regional Board conducts a surprise inspection annually. C-12 Samples are taken for process controls. C-13 Samples are taken in accordance with permit requirements. C-14 Installation of new effluent meters in 5/99 with flow measurement requirements of +/- 2%. C-15 Dye tests to be performed quarterly to verify +/- 2% accuracy of new effluent flow meters. C-16 Potential effluent mag meter installation if new meters prove ineffective/inaccurate. (> +/- 2%) C-17 Lab Quality Assurance procedures which will be tested later. C-18 WPCP staff calculate loadings to determine if loadings are within limits. C-19 New mag meter located at SBWR pump station. C-20 Meters located at each industry site. C-21 Monthly industry reporting requirements with justification for changes in flow/toxin levels. C-22 Flow regulators on-site at industries to manage inflows to Plant for flow limitations. C-23 All financial incentive programs require proof of installation and results prior to payment. C-24 Diversion construction projects that costs exceed $50K require Council approval. C-25 Routine inspections of manholes and pipelines to determine if repairs are needed. C-26 Bids are required for sewer pipe repairs. Public Works oversees these projects. C-27 Technical Advisory Committee reviews all Fund 512 and 513 costs for appropriateness. C-28 Conservation programs are required to meet a minimum flow reduction of 1 mgd to obtain Council approval. C-29 ULFT diversion program participants must meet program criteria and be approved by relative water retailer. C-30 ULFT program participants' approval is not transferrable and is substantiated by pre-printed coupons and approved vouchers.
EFFLUENT LIMITATIONS                                                            
Measurement of Effluent:                                                            
T-1 Effluent flow is not measured or measured accurately. X X X X X X X X X X X     X X X                            
Calculation Derived From Effluent Information:                                                            
T-2 Effluent loading limits are exceeded. X X X X X X X X X X X X X X X X X X                        
T-3 Effluent volume limits are exceeded. X X X X X X X X X X X X X X X X                            
T-4 Effluent loading calculations are inaccurate. X X X X X X X X X X X X X X X X X X                        
Performance Measures:                                                            
T-5 Performance measures do not properly represent program objectives.     X               X X X       X X                        
T-5 Performance measurement targets are not measured properly.     X               X X X       X X                        
T-7 Actual sample results are inaccurate or miscalculated.     X               X X X       X X                        
FLOW DIVERSION                                                            
Measurement of Diverted Flow:                                                            
T-8 Diverted flow is not measured or measured accurately for each program.     X   X     X X X X X X           X X X X     X          
Cost Effectiveness:                                                            
T-9 Diversion and/or conservation programs are proposed without adequate justification or analysis.     X   X     X X X X X X           X       X X   X X X X X
T-10 Diversion resources are devoted to programs that are unnecessary or minimally effective.     X   X     X X X X X X           X X X   X X   X X X X  
T-11 Diversion program costs are not accurately estimated or accumulated.     X   X     X X X X X X           X       X X   X X X X  

|CSJ Home Page| Auditor's Home Page| Risk Matrix Library|

If you have any questions or comments about this web page, please send comments to webmaster minh.nguyen@ci.sj.ca.us. Last revised May 13, 2003.