The URL can be used to link to this page

Home My WebLink About1981-01-17; City Council; 6544; Encina sewage treatment plant expansionCITY OF CARLSBAD , c ,.^"' LE:mmt Initial AGENDA BILL NO.lead DATE: March 17, 1981 C. Atty DEPARTMENT: Engineering C* Mgr* ff- SUBJECT: ENCINA SEWAGE TREATMENT PLANT PHASE IMA EXPANSION STATEMENT OF THE MATTER The Encina Sewage Treatment Plant is presently being enlarged from a capacity of 16 mgd to 1.8 mgd. The construction should be complete in mid 1983- Carls- bad's ownership in the present plant capacity is about 4.0 mgd and will increase to about 4.6 mgd at the completion of the Phase III construction. Recent flow data shows Carlsbad's flow to be about 3.25 mgd. By mid-1983, Carlsbad's sewage flows should be approaching the Encina capacity, although the Lake Calavera Hills facility will be available to handle an additional 1.2 mgd. The Encina General Manager has arranged for a report to be prepared examining a possible Phase IMA enlargement of the Encina facilities. The enlargement would increase the plant size from 18.0 mgd to 22.5 mgd and would increase Carlsbad's capacity to about 5-7 mgd. FISCAL IMPACT .^ The cost to Carlsbad for the additional 1.14 mgd of capacity is estimated at about $150,000. Assuming design will occur in fiscal year '8l-'82 and construction will occur in '82-'83, our costs would be about $20,000 next year and $130,000 the following year. The projected sewer construction fund revenues may have to be augmented by a "loan" to fund the proposed project. The cost per EDU is about $32. RECOMMENDATION Approve the Phase IMA expansion of the Encina Sewage Treatment Plant "in concept" and authorize the City's JAC representatives to bring a Seventeenth Supplement to the Basic Agreement Providing for Increasing Capacity to the Council for Consideration. EXHIBITS 1. Staff Report 2. Preliminary Phase IM-A Project Report by Fraser, Wilson & Associates, on file with the City Clerk. Council Action; 3-17-81 Council authorized the City's JAC representatives to bring a Seventeenth Supplement to the Basic Agreement providing for Increasing Capacity to Council for consideration. MEMORANDUM TO: City Manager FROM: Assistant City Manager/Developmental Services DATE: March 12, 1981 SUBJECT: SUMMARY ANALYSIS PHASE III-A PROJECT Summarizing the preliminary Phase III-A project report, the issues of interest which we need to understand relate to the specific unit capacities of the Phase III project (currently under construction) and to the cost, ownership, and completion time of the proposed proj- ect. The draft Seventeenth Supplement to the basic agreement is also included for review and comment. The capacity of all elements of the Phase III project is a minimum of 22.5 million gallons per day (mgd) except in the primary sedimentation tanks (Ref: Chapter 3 of the report). Because of the way the Phase III project was designed, much of the work necessary to provide the addi- tional primary sedimentation tank capacity will be completed as part of the Phase III project (Ref: Chapter 4 of the report). What this all boils down to is that by taking advantage of design flexibility in the Phase III project, we will be able to add 4.5 mgd of capacity for a total project cost estimated at $585,000. The ownership of Encina and the changes of percentage through the Phase III and Phase III-A projects is somewhat complicated because the Encinitas Sanitary District did not participate in Phase III ex- pansion but wishes to participate in Phase III-A expansion. Chapter 6 of the report explains the changes of ownership. If the project goes forward in accordance with the time schedule established in Chapter 7 of the report, Phase III-A will be able to be completed at the same time that Phase III is completed. In other words, total plant capacity will go from 16 to 22.5 mgd instead of to 18 mgd. Carlsbad's share will go from 4 mgd to 6.75 rather than to 5.4. The draft Seventeenth Supplement to the basic agreement will deal with formalizing ownership and project costs. It also authorizes the Leucadia County Water District, in its capacity as the project admin- istrator for the Joint Powers, to proceed with the preparation of the EIR required for the project and the preparation of the necessary engi- neering designs. Upon unanimous approval of the engineering designs by the Joint Powers, and upon approval of the construction budget, which is proposed to be contained in the'82-83 operations budget for Encina, Leucadia will be authorized to proceed with the construction of Phase III. '"**" Required Action What's required of the City Council at this time is for them to give direction to their J.A.C. representatives concerning their position regarding the proposed project. If Council agrees in concept with the project as outlined, in the preliminary report, their action should be to instruct their representatives to authorize the prepara- tion of the final draft of the Seventeenth Supplement. Assuming ap- proval of the Seventeenth Supplement occurs, funding for the environ- mental and design portions of the project will be included in the 1981-82 Encina budget, which will be presented to Council for approval as part of our annual budget process. RAB/cle PRELIMINARY PHASE III-A PROJECT REPORT ENCINA WATER POLLUTION CONTROL ^^ FACILITIES Serving North San Diego County Encina Water Pollution Control Facilities Carlsbad, California February 24, 1981 Fraser, Wilson & Associates Consulting Engineers Carlsbad, California Fraser, Wilson & Associates Consulting Engineers 2945 Harding, Suite 211, Carlsbad, CA 92008 (714) 434-1794 GRAHAM T. FRASER, P.E. President DEXTER S. WILSON Director February 24, 1981 Mr. Dennis M. Reid Encina General Manager 6200 Avenida Encinas Carlsbad, California 92008 Dear Mr. Reid: In accordance with the agreement made on February 9, 1981 between the Leucadia County Water District and Fraser, Wilson & Associates, we have completed the necessary studies and are submitting herewith a preliminary project report for the Phase IIIA Enlargement of the Encina Water Pollution Control Facilities. The report examines each of the Phase III treatment plant processes and evaluates the effect of an increase in the plant capacity from 18.0 to 22.5 million gallons per day on each process. The report concludes that the only capital improvement needed to effect this capacity increase is the addition of one more primary sedimentation tank. The estimated cost for the Phase IIIA project is $585,000 which, in addition to the estimated construction costs, includes costs for an Environmental Impact Statement, preparation of design documents, construction management and a contingency factor allowance. The estimated cost allocations to each of the Encina participating agencies is presented in Table 6-3. The report examines the regulatory and planning issues related to the Phase IIIA project and in each case discusses the action, if any, needed to be taken to eliminate future roadblocks. A time scheduled for implementing the Phase III project Mr. Dennis M. Reid Encina General Manager -2- February 24, 1981 is presented in Figure 7-1. We will be pleased to discuss our findings and recommendations with you at your convenience. Respectfully submitted, FRASER, WILSON & ASSOCIATES aham T. Fraser President Defter S. Wilson Project Manager GTF:mls Fraser, Wilson & Associates 2945 Harding, Suite 211 Consulting Engineers Carlsbad, CA 92008 (714) 434-1794 c CONTENTS CHAPTER 1 - INTRODUCTION 1-1 CHAPTER 2 - CONCLUSIONS AND RECOMMENDATIONS 2-1 Conclusions 2-1 Recommendations 2-2 CHAPTER 3 - TREATMENT PLANT PROCESSES 3-1 Mechanically Cleaned Bar Screens 3-2 Grit Removal Tanks 3-3 Primary Sedimentation Tanks 3-3 Aeration Tanks 3-4 Secondary Sedimentation Tanks 3-5 Dissolved Air Flotation Thickeners 3-5 Sludge Digestion Facilities 3-6 Sludge Dewatering and Hauling 3-7 Support and Miscellaneous Facilities 3-8 Effluent Pumping Station and Outfall 3-9 CHAPTER 4 - IMPROVEMENTS AND ADDITIONS 4-1 Structural 4-1 Mechanical Equipment and Piping 4-2 Electrical and Wiring 4-3 Instrumentation and Controls 4-4 CHAPTER 5 - COST ESTIMATES 5-1 CHAPTER 6 - OWNERSHIP, CAPACITY RIGHTS, AND COST ALLOCATIONS 6-1 Ownership and Capacity Rights After Phase IIIA 6-2 Encinitas Buy-in Costs 6-3 CHAPTER 7 - TIME SCHEDULE 7-1 CHAPTER 8 - REGULATORY AND PLANNING ISSUES 8-1 Governmental Requirement for Discharge 8-1 State Requirements 8-3 Federal Requirements 8-4 Coastal Zone Conservation Commission 8-4 San Diego Comprehensive Planning Organization 8-6 San Diego County Planning Department 8-7 Local Governments 8-7 REFERENCES APPENDIX A - DRAFT 17TH AMENDMENT TO BASIC AGREEMENT APPENDIX B - ENCINA NPDES PERMIT Fraser, Wilson & Associates Consulting Engineers c LIST OF TABLES Number 6-1 6-2 6-3 Participant Ownership and Capacity Rights Phase III and Phase IIIA Enlargement Increments , Participant Ownership and Capacity Rights After Phase IIIA , Phase IIIA Cost Allocation , ,6-1 ,6-3 ,6-5 LIST OF FIGURES 3-1 3-2 4-1 7-1 Plant Layout Plant Flow Diagram Cross Section of Sixth Sedimentation Tank and Power and Maintenance Building Time Schedule Fraser, Wilson & Associates Consulting Engineers 1-1 CHAPTER 1 INTRODUCTION Presently, approximately 14.0 million gallons per day of wastewater is treated at the Encina Water Pollution Control Facility (WPCF) prior to discharge through the ocean outfall. The Encina Water Pollution Control Facility currently has a design rating for primary treatment of 16.00 million gallons per day. The Encina WPCF is currently engaged in Phase III construction which will enlarge and upgrade the present facilities to secondary treatment with a rated capacity of 18.0 million gallons per day. Phase III construction began in June 1980 and should be completed by mid 1983. Because of the substantial delays which have plagued the Phase III project since its inception in 1974 the Encina Water Pollution Control Facility will be near its Phase III capacity of 18 million gallons per day concurrent with the completion of Phase III construction. Additional treatment capacity will be required immediately at Encina if the past sewer moritorium situation is to be avoided in the future. The improvements and modifications required to handle an average daily flow of 22.5 million gallons per day are discussed. Regulatory aspects, cost estimates, ownership, Fraser, Wilson & Associates Consulting Engineers 1-2 capacity rights, cost allocations and a completion schedule for the Phase IIIA project are presented. Fraser, Wilson & Associates Consulting Engineers 2-1 CHAPTER 2 CONCLUSIONS AND RECOMMENDATIONS Conclusions The only capital improvements required to handle the Phase IIIA flows are those associated with the addition of the sixth primary sedimentation tank. Due to the combined impact of satellite reclamation plants and the Phase IIIA flows on the effluent pumping station and ocean outfall system, a separate report is being prepared to evaluate the capacity and staging of capital improvements to this system. The permits and approvals required to proceed with Phase IIIA improvements include those from the Coastal Commission, Regional Water Quality Resources Board, and perhaps the City of Carlsbad. None of these will be difficult to obtain. An Environmental Impact Report will be required. An amendment to the Basic Joint Powers Agreement will be needed to define capacity rights and allocate costs for the Phase IIIA project. All six member agencies, including the Encinitas Sanitary District, have elected to participate in this expansion. A draft copy is included in the Appendix for consideration. The total estimated cost, including environmental engineering fees, construction costs and contingencies Fraser, Wilson & Associates Consulting Engineers 2-2 to complete the Phase IIIA improvements, is $585,000. This cost figure does not include improvements to the effluent pumping station and ocean outfall system which will be required at some future date due to the combined impact of the Phase IIIA increased capacity and the various satellite plant fail-safe connections. The improvements for Phase IIIA can be constructed and completed simultaneously with the Phase III work. Recommendations 1. The Encina WPCF Joint Advisory Committee should act on the 17th supplement to the Basic Joint Powers Agreement and it should be taken before the boards of the six member agencies for final action. 2. Procurement should begin in Fiscal Year 81/82 for a firm to prepare the Environmental Impact Report. Fraser, Wilson & Associates Consulting Engineers 3-1 CHAPTER 3 TREATMENT PLANT PROCESSES In September 1965, the Encina Water Pollution Control Facility commenced operation. The original primary treatment capacity on an average dry weather flow basis was A.50 million gallons per day. Primary treatment capacity has been subsequently increased during three major enlargement phases, referred to as Phase I, Phase II, and Phase HA, to 13.75 million gallons per day. Construction is now underway at the Encina Facility on the Phase III Enlargement and Upgrading. When Phase III construction work is complete the secondary treatment capacity of the Facility will be 18 million gallons per day. A layout of the plantsite as it will be when Phase III construction work is complete is presented in Figure 3-1 and a process flow diagram is shown in Figure 3-2. The various plant processes are briefly discussed in the following pages. For the purposes of this report the Average Daily Flow for Phase IIIAwill be 22.5 million gallons per day. The peaking factor which will be used to convert average dry weather flow to peak wet weather flow is 2.0. This is the same peaking factor which was used for the Phase III design. In analyzing the various plant processes very Fraser, Wilson & Associates Consulting Engineers BUENA ^™ "^ "^ /'"~~XN 1 \ / V.-^ /^""/1\ v-^.^ PLANT N \ 1 S BCBOUNDARY PRIMARY SEDIMENTATION TANKS SCREENING BUILDING INTERCEPTOR POWER AND MAINTENANCE /_MAINTENANCE BUILDING / SECONDARY FACILITIES BUILDING AND SECONDARY GALLERY I:XZZ:DC INFLUENT JUNCTION DISSOLVED AIR j FLOTATION-^ I THICKENERS SECONDARY SEDIMENTATION TANKS CARLSBAD INTERCEPTOR EFFLUENT PUMPING STATION EXISTING FACILITY FUTURE FACILITY SIXTH PRIMARY SEDIMENTATION TANK SCALE 1"MOO' PLANT LAYOUT FIGURE 3-1 AERATION AIR GRIT AND SCREENINGS I GRIT SEPARATORS TO LANDFILL WASTEWATER INFLUENT JUNCTION STRUCTURE MECHANICAL BAR SCREENS AERATED GRIT REMOVAL TANKS STEAM SEPARATOR CONDENSERS PRIMARY SEDIMENTATION TANKS AERATION AIR BLOWERS (MOTOR DRIVEN)RECLAIMED PLANT WATER PUMPS EFFLUENT PUMPS TO OCEAN SECONDARY SEDIMENTATION TANKS CHLORINE CONTACT TANK ACTIVATED SLUDGE AERATORS RETURN ACTIVATED SLUDGE r \ WK\ L VI \ , -N >y »^ (*>f .t : ,/ y GRA LI „ n r i _, r -, - r '*• •i 7:Vi u,:-:,-;^,,^ RETURN ACTIVATED SLUDGE PUMPS AIR FLOTATION EFFLUENT PRIMARY SLUDGE (i PLANT HOT WATER PRIMARY SLUDGE PUMPS ON-SITE GENERATED POWER MIXED GAS ENGINE DRIVEN, , GENERATOR^ ENGINES JACKET WATER AERATION AIR JACKET WATER AIR SLUDGE GAS MIXED GAS BLOWERS NATURAL GAS 'BOOSTERS NATURAL GAS ANAEROBIC SLUDGE DIGESTERS WASTE ACTIVATED SLUDGE WASTE ACTIVATED SLUDGE PUMP THICKENED WASTE ACTIVATED SLUDGE BELT WASH WATER AND FILTRATE SLUDGE DEWATERING BUILDING DIGESTED SLUDGE AERATION AIR BLOWERS (ENGINE DRIVEN) DIGESTED SLUDGE PUMPS EFFLUENT PUMPING STATION DISSOLVED AIR FLOTATION THICKENERS SLUDGE TO LANDFILL PLANT FLOW DIAGRAM FIGURE 3-2 3-2 little need be discussed on processes which were designed under Phase III to handle an average dry weather flow of 22.5 million gallons per day. A number of the processes under Phase III were designed on a modular basis. The ultimate average dry weather flow and peak wet weather flow for Phase III design purposes were 45 million gallons per day and 91 million gallons per day respectively. Most of the plant processes were designed for modular construction in fractional parts of one of these flows. Commonly used design flows for modular units in Phase III construction are 11.25, 22.5, and 30.3 million gallons per day. Mechanically Cleaned Bar Screens Number installed under Phase III Ultimate number Maximum Capacity each or Modular Expansion Size Phase III Duty Capacity in terms of Average Dry Weather Flow 3 4 30.3 million gallons per day 30.3 million gallons per day The bar screens are designed so that one unit is a standby. The maximum combined hydraulic capacity of the two duty bar screens is 60.6 million gallons per day. Using a peak wet weather to average dry weather flow peaking factor 2.0, as was used for Phase III work, and recognizing that the duty units must be able to handle the entire peak wet weather flow, the average dry weather flow Eraser, Wilson & Associates Consulting Engineers O 3-3 capacity of the Phase III Bar Screens is 30.3 million gallons per day. Thus, the bar screens installed under Phase III should be more than adequate to handle Phase III flows. Grit Removal Tanks Number Detention Time at Peak Wet Weather Flow Number Constructed Under Phase III Ultimate Number Maximum Capacity each or Modular Expansion Size Phase III Capacity in terms of average dry weather flow 9.2 minutes 11.25 million gallons per day 22.5 million gallons per day The two grit tanks were designed under Phase III to provide proper grit removal for peak flows of up to 45 million gallons per day. All appurtenance associated with the grit system including the pumps, cyclones and dewaterers can handle the full design flow of the grit tanks. Hence, the grit removal system is currently designed for Phase IIIA flows and no additional improvements are needed. Primary Sedimentation Tanks Number 5 Fraser, Wilson & Associates Consulting Engineers c o 3-4 Ultimate Number Capacity Each or Modular Expansion Size Phase III Capacity in terms of Average dry weather f]ow Design Surface loading rate at average dry weather flow. (Gallons per square foot per day) 12 3.75 million gallons per day 18.75 million gallons per day 1172 The capacity of the primary sedimentation tanks is inadequate for Phase III flows. However one additional sedimentation tank and associated equipment will be required to increase the capacity to 22.5 million gallons. A detailed description of the improvements needed to add this sixth sedimentation tank will be provided in the following chapter. Aeration Tanks Number Ultimate Number Capacity Each or Modular Expansion Size Phase III Capacity in terms of average dry weather flow 2 4 11.25 million gallons per day 22.5 million gallons per day The aeration tanks were designed under Phase III to treat an average dry weather flow of 22.5 million gallons per day. All support equipment needed to properly operate the aeration tanks including the aeration air blowers, Fraser, Wilson & Associates Consulting Engineers 3-5 return activated sludge pumps and waste activated sludge pumps is sized for an average dry weather flow of 22.5 million gallons per day. In summary, the aeration tanks are adequate for Phase IIIA flows. Secondary Sedimentation Tanks Number Ultimate Number Capacity Each or Modular Expansion size Phase III Capacity in terms of average dry weather flow 4 8 5.63* million gallons per day 22.5 million gallons per day *Since the secondary sedimentation tanks are used in conjunction with the Aeration Tanks and the modular expan- sion size of the aeration tanks is 11.25 million gallons per day, the remaining four sedimentation tanks will most likely be built two at a time. The secondary sedimentation tanks were designed under Phase III to accommodate an average dry weather flow of 22.5 million gallons per day. Thus, the secondary sedimentation tanks are adequate for Phase IIIA flows. Dissolved Air Flotation Thickeners Number Ultimate Number Capacity Each or Modular Expansion size Phase III Capacity in terms of average dry weather flow 2 4 11.25 million gallons per day 22.5 million gallons per day Fraser, Wilson & Associates Consulting Engineers c 3-6 The dissolved air flotation thickeners have been designed to process large amounts of solids during peak activated sludge wasting periods through operational changes in the process. This is achieved by increasing the polymer dose rate and increasing the amount of dissolved air added to the process. In this way the solids loading to each tank can be substantially increased. The increased capacity can be maintained indefinitely but it is not a cost - effective to do so. Due to this flexibility in the design of the dissolved air flotation thickeners the present system should be sufficient to handle all sludge wasting conditions under Phase IIIA operation. The operational cost of the thickeners (mainly due to additional polymer usage) may be proportionally higher than anticipated for Phase III due to the higher loading rates, but no additional capital improvements will be needed to handle Phase IIIA flows. Sludge Digestion Facilities Number of Anaerobic Ultimate Number 3 - 50 ft. diameter 1 - 105 ft. diameter 3 - 50 ft. diameter 1 - 105 ft. diameter 2-90 ft. - 105 ft. diameter Mean cell residence time with Phase III digesters is 21 days at an average dry weather flow of 22.5 million gallons per day. Fraser, Wilson & Associates Consulting Engineers 3-7 Although the design mean cell residence time will be reduced from 28 days to 21 days, under Phase IIIA operation the digesters may be operated with a mean cell residence time as low as 18-19 days with no ill effects. A further increase in digester capacity may be realized through a more effective operation of the primary sedimentation tanks and dissolved air flotation thickeners. If the solids concentration of the flow from these processes can be increased, the capacity of the digesters can be substantially increased without reducing the mean cell residence time below an unsafe level. In summary, the Phase III digesters should be more than adequate for Phase IIIA flows. Sludge Dewatering and Hauling Number of Belt Presses Ultimate Number of Belt Presses Number of Trucks Number of Trailers 4 8 3 5 The capacity of the sludge dewatering and hauling equipment is dependent on the length of time the equipment is operated, but when the duty time of the equipment is increased the operation and maintenance costs are increased proportionally. Under Phase III, three duty belt presses and one standby Fraser, Wilson & Associates Consulting Engineers c 3-8 unit are being installed. To gain the extra capacity needed for Phase IIIA the standby unit may be operated, or the on time for the three duty presses may be increased. To increase the solids hauling capacity to the level needed for Phase IIIA an additional 3-4 roundtrips to the landfill will be needed each week. This will increase operational and maintenance costs but will not overburden the sludge hauling equipment. In summary, the capacity of the sludge dewatering and sludge hauling equipment may be increased to the levels needed for Phase IIIA operation by increasing the duty time for the equipment. There will be no capital expendi- tures required for Phase IIIA but the operation and main- tenance costs will increase. Support and Miscellaneous Facilities The administrative, maintenance and other support buildings were sized for the ultimate capacity to 45 million gallons per day. The building furnishings and equipment will not be adequate for the 45 million gallon per day plant, but for Phase IIIA the furnishings and equipment should be adequate. It should be noted that the Engine-Generator and Engine-Blower units installed under Phase III are fueled by sludge gas. The increased wastewater flow will in- crease the amount of sludge gas produced by the digesters Fraser, Wilson & Associates Consulting Engineers W 3-9 and provide a more cost - effective utilization of the engines. Effluent Pumping Station and Outfall The capacity of the effluent pumping station and outfall is outside the scope of this report, and a separate report dealing with this subject is being pre- pared. m m Fraser, Wilson & Associates Consulting Engineers o 4-1 CHAPTER 4 IMPROVEMENTS AND ADDITIONS As discussed in the previous chapter the only plant processes which will require major capital improvements to handle the Phase IIIA flow is primary sedimentation. A description of the capital improvements needed to complete primary sedimentation tank No. 6 follows. Structural When the facilities were laid out during the Phase III design, the Power and Maintenance building was positioned next to the primary sedimentation tanks. When the final location of the building was established there were only thirty feet separating them. Due to the elevation difference between the floor of the power building and the top of the sedimentation tanks and the fact that a road and walkway were required between the two structures a retaining wall was needed to support the roadway. This retaining wall would have been a temporary structure that would have had to be removed to allow for the construction of the sixth sedimentation tank. Furthermore, the depth of excavation to allow for future construction of the sixth sedimentation tank would have probably necessitated sheet pilings to prevent damage to the Power and Maintenance building. Fraser, Wilson & Associates Consulting Engineers c o 4-2 Figure 4-1 is a cross section through the sedimentation tanks and the Power and Maintenance building and shows the location of the sixth primary sedimentation tank and the retaining wall. To eliminate these future construction difficulties the outer wall of the sixth sedimentation tank was con- structed under Phase III to serve also as a retaining wall. The floor of the tank and sludge hopper were also constructed to serve as a footing for the retaining wall. The north end of the tank was also completed because it abbuts the primary gallery. Consequently the majority of concrete work for the sixth primary is already included in the Phase III project. The only remaining concrete work is the south wall, the effluent channel, the scum trough walkways around the tank, and the final surfacing of the bottom of the tank. The quantity of concrete estimated for this is 70 cubic yards of difficult structural concrete work and 110 cubic yards of topping concrete. Mechanical Equipment and Piping The following list summarizes the mechanical equipment needed to complete the sixth sedimentation tank. Equipment: Item Influent Sluce Gates Number Fraser, Wilson & Associates Consulting Engineers o TOP OF WALL EL. 134.0. TOP OF SEDIMENTATION TANKSEL. 126.63 o CONCRETEWALK. POWER AND MAINTENANCE BUILDING FINISHED FLOOR 'EL. 133.5 ROAD- 28' .BASE OF FOOTING EL. 130.83 BOTTOM OF TANK FOOTING EL. 113.25 BOTTOM OF HOPPER EL. 97.54 CROSS SECTION OF SIXTH SEDIMENTATION TANK AND POWER AND MAINTENANCE BUILDING FIGURE 4-1 4-3 Influent Diffusers Effluent Weirs Scum Skimmer and Drive Longitudinal Sludge Collector Supports and Guides Scum Skimmer Primary Sludge Pump Site Glass Influent Finger Baffle 2 4 1 1 1 1 1 1 Piping and Valving: Item Number 6" Sludge Piping 20 feet 3 valves, 1 quick coupler.:;, pressure-switch 8" Tank drain piping 5 feet 1 valve %" water piping 30 feet 1 purge system 3" water piping 25 feet 1" air piping 25 feet Electrical and Wiring A motor and motor starter will have to be provided for the sludge pump. Sufficient motor control center space has been provided under Phase III for the additional starter. The longitudinal collector and scum skimmer will be driven from the motors on the fifth primary Fraser, Wilson & Associates Consulting Engineers o ~ .4-4 sedimentation tank. All necessary wiring will be installed under the Phase III project. Instrumentation and Controls The sequencing cycle for the primary sludge pumps is contained in a programmable logic controller provided in the Phase III project. There is sufficient capacity within this controller for the sixth sedimentation tank equipment. The equipment for all other alarm and control functions needed for the primary sludge pump, scum skimmer and logitudinal collector will be provided under Phase IIIA. Fraser, Wilson & Associates Consulting Engineers o 5-1 CHAPTER 5 COST ESTIMATES This chapter will provide preliminary cost estimates for all steps of the Phase IIIA Project. The costs for the Environmental Impact Statement, the design, the con- struction, the construction management and all contingencies are summarized in the following Table. This cost estimate is based on the time scheduled presented in Chapter 7. If the project is delayed, these numbers may be expected to change. Please be advised that the following table are only cost estimates; actual costs for these services and products may vary substantially from these figures. Item Environmental Impact Report Design of Phase IIIA Construction of Phase IIIA Structural Mechanical Electrical Instrumentation Mobilization and Demobilization Contractors Overhead and Profit Contingencies (10%) Construction Management Subtotal Estimated Cost $ 30,000 45,000 75,000 Subtotal Subtotal Total: 75,000 140,000 160,000 30,000 10,000 30,000 50,000 45,000 465,000 465,000 45,000 45,000 $585,000 Fraser, Wilson & Associates Consulting Engineers o 6-1 CHAPTER 6 OWNERSHIP, CAPACITY RIGHTS, AND ALLOCATIONS The Tenth Supplement to the Basic Agreement provides the basis for Phase III construction cost apportionment between the participating agencies of the Joint Powers Agreement and authorizes Vista Sanitation District to enter into construction contracts. The participant ownership and capacity rights of the Phase III expansion increment of 4.25 million gallons per day (13.75 MGD to 18MGD) is shown in columns 1 and 2 of Table 6-1. UNIT I - TREATMENT PLANT TABLE 6-1 - PARTICIPANT OWNERSHIP AND CAPACITY RIGHTS PHASE III AND PHASE IIIA ENLARGEMENT INCREMENTS COLUMN NO. PARTICIPANT VISTA CARLSBAD BUENA SAN MARCOS LEUCADIA ENCINITAS 1 2 Phase III Enlargment Increment of 4.25 MGD MGD 1.350 1.143 0.207 0.800 0.750 0 4.25 Percentage3 31.76 26.90 4.87 18.82 17.65 0 100 3 4 Phase IIIA Enlargement Increment of 4 . 5 MGD MGD 1.350 1.143 0.207 0.800 0.750 0.250 4.5 Percentage 30.00 25.40 4.59 17.78 16.67 5.56 100 5 6 Phase III plus Phase IIIA Enlargement Increment 8.75 MGD MGDC 2.700 2.286 0.414 1.600 1.500 0.250 8.75 Percentage 30.857 26.126 4.731 18.286 17.143 2.857 100 a Section 6 Tenth Supplement k Section 8 Tenth Supplement (Phase IIIA increment allocated in same percentage as ownership after completion of Phase III.) c Computed by summing the participant ownership flows. d Computed from the sum of the participant ownership flows. Fraser, Wilson & Associates Consulting Engineers o 6-2 The percentage capacity rights of the 4.25 MGD increment differs from those listed in Section 6 of the Tenth Supplement for Carlsbad, Buena, and San Marcos. The differences are relatively minor and are presumed the result of computation and rounding errors. It is suggested the Tenth Supplement be amended to reflect the correct figures. The Phase IIIA expansion increment of A.5 MGD is to be allocated among the participants, including Encinitas, in the same proportional ownership and capacity rights which will apply after Phase III is completed. This percentage ownership and capacity rights is shown in Column 4 of Table 6-1. These also differ slightly from the percentage figures listed in Section 8 of the Tenth Supplement. Ownership arid Capacity Rights After Phase IIIA The ownership and capacity rights of the six parti- cipants in the treatment plant after Phase IIIA is com- pleted as shown in Table 6-2. It should be noted that the ownership percentages remain unchanged. Fraser, Wilson & Associates Consulting Engineers • TABLE 6-2 - PARTICIPANT VISTA CARLSBAD BUENA SAN MARCOS LEUCADIA ENCINITAS Ownership After MGD 5.40 4.573 0.827 3.20 3.00 1.00 18.00 C O 6-3 UNIT I - TREATMENT PLANT PARTICIPANT OWNERSHIP AND CAPACITY RIGHTS AFTER PHASE IIIA & Capacity Rights Phase III3 Percentage 30.00 25.40 4.60 17.78 16.67 5.56 100.00 Ownership & Capacity Rightsfor Phase IIIA Incrementof 4.5 MGDB MGD 1.35 1.143 0.207 0.800 0.750 0.250 4.50 Percentage 30.00 25.40 4.60 17.78 16.67 5.56 100.00 Ownership & Capacity After Phase IIIA MGD 6.75 5.716 1.034 4.00 3.75 1.25 22.50 Percentage 30.00 25.40 4.60 17.78 16.67 5.56 100.00 a Section 8 Tenth Supplement b See Columns 3 and 4 of Table 6-1 A draft supplement to to implement Phase IIIA and eluded herein costs for the the Basic Joint Powers Agreement to apportion the costs is in- as Appendix "A". Engineering and construction Phase IIIA proejct should be apportioned according to the ownership participant. and capacity rights of each Encinitas Buy-In Costs Prior to the introduction of the Phase IIIA project, Encinitas Sanitary District did not wish to participate in the costs of the Phase III expansion. However, they now wish to participate in the Phase IIIA project and to pay their share of the Phase III enlargement. PTI Fra PH ^ ser, Wilson & nsulting Engir i Associates leers o 6-4 The percentage ownership and capacity rights for the entire enlargement increment of 8.75 MGD (4.25 MGD Phase III plus 4.50 MGD Phase IIIA) is shown in Columns 5 and 6 of 6-1. The Encinitas Sanitary District's ownership of the total 8.75 MGD enlargement increment, from Column 6 of Table 6-1, is 2.857 percent. Accordingly, Encinitas' buy-in cost will be 2.857 percent of the total local share of the Phase III enlargement costs plus the costs of the Phase IIIA enlargement. The local share of the Phase III enlargement is estimated to be approximately $4,370,000 (based on Local Revenue Needs and Cash Flow Project Report 6/6/80) and the estimated cost of the Phase IIIA project, including environmental impact report, design, construction, con- struction management and contingencies is $585,000. Hence, Encinitas' approximate buy-in cost is 2.857 percent of the sum of the local costs for Phase III and Phase IIIA or approximately $141,500. The estimated Phase IIIA cost allocations for each of the participants for fiscal years 1981/82 and 1982/83 is shown in Table 6-3. Fraser, Wilson & Associates Consulting Engineers 6-5 PARTICIPANT VISTA CARLSBAD BUENA SAN MARCOS LEUCADIA ENCINITAS Percentage 30.00 25.40 4.59 17.78 16.67 5.56 (+Phase III) 100.00 Total Cost $175.500 148,590 26,850 104,015 97,520 32,525 (+$108,975) $585,000 Fiscal Year Costs 81/82 Environmental & Engineering $22,500 19,050 3,442 13,335 12,503 4,170 $75,000 Fiscal Year Costs 82/83 Construction & Inspection $153,000 129,540 23,408 90,680 85,017 28,355 $510,000 TABLE 6-3 - PHASE IIIA COST ALLOCATION Encinitas1 actual buy-in cost will be considerably less because of the reimbursement provision contained in Section 9 of the Tenth Supplement. A reimbursement is due Encinitas because of their reduced ownership in the treatment plant from 7.27 percent, after Phase IIA, to 5.56 percent, after Phase III, for a net ownership reduction of 1.71 percent. This reduction is to be applied, according to the Tenth Supplement, only to the book value of the primary sedimentation tanks and the land. A detailed cost allocation study is being prepared as a part of the update of the preliminary Financial Plan and Revenue Program. Fraser, Wilson & Associates Consulting Engineers o 7-1 CHAPTER 7 TIME SCHEDULE Figure 7-1 on the following page is a time schedule showing the intervals available to perform individual tasks for the Phase IIIA Project. The chart shows two methods of handling the construction work. The desirable method would be to negotiate a change order with the Phase III contract 10/11 contractor. If the Encina WPCF are unable to negotiate a fair change order, the chart shows the time required to competitively bid and then complete Phase IIIA construction. Fraser, Wilson & Associates Consulting Engineers o PHASE ffl-A PROJECT TIME SCHEDULE TASK 1981 JFMAMJJASOND 1982 JFMAMJ J A S 0 N 0 1963 J F M AMJ ADOPT I7TH. SUPPLEMENT TO JOINT POWERS AGREEMENT !w ENVIRONMENTAL IMPACT REPORT ENGAGE FIRM PREPARE DRAFT - CONDUCT PUBLIC HEARINGS i PREPARE FINAL DRAFT/STATUTE PERIOD DESIGN ENGAGE FIRM ! PREPARE PLANS AND SPECIFICATIONS PREPARE BID DOCUMENTS BIDDING PERIOD .CONSTRUCTION NEGOCIATE CHANGE ORDERS AWARD CONTRACT CONSTRUCTION ml AWARD CONTRACT Illlllllllllllllll CONSTRUCTION .CHANGE ORDER SCHEDULE TIME SCHEDULE FIGURE 7-1 c 8-1 •m m CHAPTER 8 REGULATORY AND PLANNING ISSUES Several planning agencies have jurisdiction within the Encina service area. They include the 1) U. S. Environmental Protection Agency; 2) the State Water Resources Control Board; 3) San Diego Regional Water Quality Control Board, (Region 9); 4) the California Coastal Zone Conservation Commission, San Diego Region; 5) the San Diego Comprehensive Planning Organization, San Diego County Planning Department and the Planning Departments of the Cities of Carlsbad, Vista and San Marcos. The major responsibility of the first three aforementioned agencies, with regard to the proposed project, is their requirements for discharge of treated wastewater to the environment. Because the requirements of these governmental agencies are so interrelated, they are discussed together below in a section entitled "Governmental Requirements for Discharge." The jurisdictions, responsibilities and interrelationships of the various other agencies are described in subsequent sections. Governmental Requirements for Discharge Specific requirements with respect to the quality of treated water are established for each discharge by the California Regional Water Quality Control Board (RWQCB). Fraser, Wilson & Associates Consulting Engineers c 8-2 Nine such boards serve the State, each of which has jurisdiction of a topographic region and operates under the general guidance and final authority of the State Water Resources Control Board (SWRCB). The Encina Water Pollution Control Facility is within the San Diego Region. State discharge requirements are established under cooperative agreement with the EPA under the National Pollutant Dis- charge Elimination System (NPDES). To ensure compliance in accordance with discharge requirements, the RWQCB establishes both effluent discharge and receiving water monitoring and reporting programs. Environmental protection must be demonstrated to the State Department of Fish and Game, other interested agencies and groups concerned with water quality. Environmental impact considerations are made public in an environmental impact report and in a public hearing. These reports are forwarded to State agencies by the State Clearing- house; others interested may obtain copies from local agencies or use copies filed in public libraries or other public places. When the current NPDES Permit expires in 1984, Encina will make application to the SWRCB and RWQCB for an in- crease in discharge to the ocean from 18 to 27 MGD (or the current maximum capacity of the ocean outfall) average daily waste discharge volume. The permit will also increase the mass emission rates of the various pollutant Fraser, Wilson & Associates Consulting Engineers c 8-3 constituents listed in Paragraph A.3. of the NPDES permit. A copy of the current NPDES permit is attached hereto as Appendix "B". State Requirements The California Porter-Cologne Water Quality Act as amended forms the legal basis for State requirements for wastewater discharges. To minimize duplication and to eliminate conflicts between State and Federal regulations, amendments to the Porter-Cologne Act require the SWRCB to alter existing administrative regulations to comply with both the amended Federal Water Pollution Control Act, as well as regulations and guidelines adopted pursuant to the Federal Act. Section 13379 of the Porter-Cologne Act, therefore, stipulated the same implementation schedule for effluent limitations as Section 301 of the Federal Act. Thus the requirement to upgrade publicly owned treatment plants to provide secondary treatment as scheduled in the NPDES permit, also has the force of State law. On July 6, 1972, the SWRCB adopted the Ocean Plan which sets forth stringent water quality objectives and effluent quality requirements for waste discharges to the ocean and establishes minimum initial dilution requirements for such discharges. The requirements of the Ocean Plan (as amended 1978) are all incorporated into the current NPDES permit No. CA0107395, see Appendix "B". It should be noted that under the current NPDES Fraser, Wilson & Associates Consulting Engineers o 8-4 permit all effluent limitations were computed using an initial dilution factor of 153.99 and applying the calculation procedures found in "Water Quality Control Plan, Ocean Waters of California 1978." This dilution factor should be verified using the actual number of discharge ports open on the diffuser section of the outfall before the current NPDES permit expires. Federal Requirements With the passage of the Federal Water Pollution Control Act Amendments of 1972, regulation of waste- water discharges was established on the basis of effluent quality limitations. Section 301 of the Federal Act sets forth a timetable for compliance with effluent limitations for point discharges to navigable waters, including the ocean, and requires EPA to further define those limitations. The effluent limitations and timetable presented in the NPDES permit (Appendix "B") thus establish as law the require- ment that since the Encina Water Pollution Control Facility is a publicly owned wastewater treatment plant that secondary treatment must be utilized no later than January 1, 1983. Coastal Zone Conservation Commission With the passage of Proposition 20, the California Coastal Zone Conservation Act of 1972, a State Coastal Zone Conservation Commission and six Regional Commissions Fraser, Wilson & Associates Consulting Engineers o o 8-5 were created. A coastal zone was established covering the coastal area of California from Oregon to the Mexican border. The zone includes the land and water area seaward to the outer limit of state jurisdiction, including all islands within that jurisdiction. The zone extends landward to the highest elevation of the nearest coastal mountain range and as more specifically shown on U.S.G.S. 7% minute of quadrangles specially prepared for the California Coastal Commission. Maps 150-161 are applicable to the San Diego Zone Coastal Commission. The Commission now administers the requirements of the California Coastal Act of 1976, as extensively amended by California Statutes in 1979. The current form of the Act reduces the power of the Commission compared to earlier legislation stating "The State Water Resources Control Board and the California Region Water Quality Control Board are the state agencies with primary responsibility for the coordination and control of water quality." The exception noted in the Act is as follows: "Any development within the coastal zone or outside the coastal zone which provides service to any area within the coastal zone that constitutes a treatment work shall be reviewed by the commission and any permit it issues, if any, shall be determined only with respect to the following aspects of such development: Fraser, Wilson & Associates Consulting Engineers 8-6 (1) The siting and visual appearance of treatment works within the coastal zone. (2) The geographic limits of service areas within the coastal zone which are to be served by particular treatment works and the timing of the use of capacity of treatment works for such service areas to allow for phasing of development consistent with the Act." Exception (2) above applies to the Phase IIIA project. Accordingly, the environmental impact report for the proposed Phase IIIA project should be forwarded to the San Diego Regional Coastal Commission. Upon submittal of the above report, a permit for the Phase IIIA en- largement as proposed herein should be requested. San Diego Comprehensive Planning Organization The Comprehensive Planning Organization (CPO) is the area-wide planning agency which reviews and comments upon proposed projects, including wastewater facilities, for which State and Federal grant funds are being requested. Acting as the Metropolitan Clearinghouse, CPO has jurisdic- tion over all of San Diego County and the thirteen city member agencies within the County. Wastewater projects submitted to CPO for approval follow the "A-95" review process under which they are evaluated for general conformance with the adopted area-wide plan for water quality management. Furthermore, CPO develops land use planning and population projection models to aid in efficiently planning development and the corresponding need for utility services in San Diego County, and reviews Fraser, Wilson & Associates Consulting Engineers 8-7 projects to ensure that proposed facilities are rationally planned. Even though it appears unlikely at this time that Federal or State grant funds will be available for the Phase IIIA project, it would be prudent to request the CPO to review the project and check its conformity with regional planning strategies in case monies did become available at some time in the future. A copy of the draft EIR should be forwarded to the CPO and their comments, if any, incorporated into the final EIR. Sari Diego County Planning Department The San Diego County Planning Department (SDCPD) provides planning services to unincorporated County areas outside state and federal ownership. Ordinances developed by SDCPD generally control land use. A copy of the draft EIR should be forwarded to the SDCPD and their comments, if any, incorporated into the final EIR. Local Governments There are three local governments having planning and zoning control over portions of the Encina Service area. They are the Cities of Carlsbad, Vista and San Marcos. The responsibilities of various local planning agencies is dictated by the State planning and zoning laws which require that each incorporated City establish a planning agency and a planning process to Fraser, Wilson & Associates Consulting Engineers o 8-8 to guide future growth in accordance with a framework of officially adopted goals and policies directed to land use, population, housing, environmental quality, wise use and conservation of resources, safety and other relevant physical, social and economic factors. The jurisdictions of the Cities of Carlsbad, Vista and San Marcos extend to their municipal boundaries. The Encina Water Pollution Control Facility is located within the City of Carlsbad. The City may require that a "Precise Development Plan" be prepared for submission to the city's planning commission. A copy of the draft EIR should be forwarded to each of the cities and their comments, if any, incorporated into the final EIR. Fraser, Wilson & Associates Consulting Engineers REFERENCES 1. 2. 3. phase III Enlargement and Upgrading of Encina Water Pollution Control Facilities, Brown and Caldwell, February, 1978. Project Manual for Contract 10/11, Phase III Enlargement and Upgrading of Encina Water Pollution Control Facilities, Brown and Caldwell, September, 1980. Treatment Capacilities to 1983 for the Encina Water Pollution Control Facility, Reid, Dennis M., March, 1980. Fraser, Wilson & Associates Consulting Engineers c o APPENDIX "A" DRAFT OF SEVENTEENTH SUPPLEMENT TO BASIC AGREEMENT PROVIDING FOR INCREASING CAPACITY OF ENCINA WATER POLLUTION CONTROL FACILITIES FROM 16.0 MGD TO 22.5 MGD AND FOR APPORTIONMENT OF INCREASED CAPACITY Prepared by Roy H. Gann Attorney at Law February, 1981 Fraser, Wilson & Associates Consulting Engineers c SEVENTEENTH SUPPLEMENT TO BASIC AGREEMENT PROVIDING FOR INCREASING CAPACITY OF ENCINA WATER POLLUTION CONTROL FACILITIES FROM 16.0 MGO TO 22.5 MGD AND FOR APPORTIONMENT OF INCREASED CAPACITY This Seventeenth Supplement is made and entered into this day of _, 1980, by and among: VISTA SANI- TATION DISTRICT (VISTA), a County Sanitation District; CITY OF CARLSBAD (CARLSBAD), a General Law City; BUENA SANITATION DISTRICT (BUENA), a County Sanitation District; SAN MARCOS COUNTY WATER DISTRICT (SAN MARCOS), a County Water District; LEUCADIA COUNTY WATER DISTRICT (LEUCADIA), a County Water District; and ENCINITAS SANITARY DISTRICT (ENCINITAS), a Sanitary District. RECITALS A. VISTA, CARLSBAD, BUENA, SAN MARCOS, LEUCADIA and ENCINITAS own and operate the ENCINA WATER POLLU- TION CONTROL FACILITY and Ocean Outfall (and related facilities); hereafter referred to as EWPCF. B. By an agreement between VISTA and CARLSBAD, dated July 13, 1961, entitled "BASIC AGREEMENT BETWEEN VISTA SANITATION DISTRICT AND THE CITY OF CARLSBAD FOR ACQUISITION AND CONSTRUCTION OF A JOINT SEWER SYSTEM", VISTA and CARLSBAD became the owners and operators of the EWPCF. C. By virtue of Supplement and amendments to the afore- said "BASIC AGREEMENT", SAN MARCOS, LEUCADIA, BUENA, and ENCINITAS became parties to the BASIC AGREEMENT. D. At the time said BASIC AGREEMENT was entered into, the EWPCF was designed to have a minimum capacity to receive, treat and dispose of 3.5 million gallons average daily flow of sewage; and upon commencement of operation of the EWPCF in September 1965, it pro- vided primary treatment for ADWT capacity of 4.50 MGD. E. By virtue of an expansion to Unit I (the treatment plant) of the EWPCF known as Phase II Enlargement, the capacity of said Unit I was increased from 6.75 MGD to 9.75 MGD, and a further expansion to said O 3 Unit I, known as Phase HA Enlargement, the capacity of said EWPCF was increased from 9.75 MGD to 13.75 MGD. P. An expansion of Unit I of the EWPCF, known as Phase III Enlargement, is currently under construction pro- viding for an increase in capacity from 13.75 MGD to 18.0 MGO. G. The parties hereto have agreed by virtue of a Six- teenth Supplement to the "BASIC AGREEMENT" that the rerated capacity of the EWPCF is 16.0 MGO pending completion of Phase III Upgrading and Enlargement. H. The EWPCF is presently capable of treating an aver- age daily wastewater flow of 16.00 MGD, as well as treating solids from 20.9 MGD of wastewater flow. The peak wet weather flow capacity of said facility is 34.8 MGD. I. Phase III Upgrading and Enlargement is scheduled to be completed in late 1982 at which time the present projection of population for the .area served by the EWPCF will require further expansion of said facility. J. It is desirable to increase the capacity of the EWPCF (Unit I) from 18.0 MGD to 22.5 MGD to meet future flowage demands of the parties hereto. K. It is desirable that the construction of the facil- ities for increasing capacity from 18.0 MGD to 22.5 MGD be made concurrently with Phase III Upgrading and Enlargement in order that the future costs of such construction and tiniu required for performance thereof be substantially lessened. U. It is necessary to provide for the apportionment among the parties thereto of ownership rights in the increased capacity. M. It is necessary to provide for the apportionment among the par1 ties hereto of the costs necessary for, and attendant to, the planning, design, and construc- tion of facilities for such increased capacity to 22.5 MGD. -2- N. The Seventeenth Supplement to the BASIC AGREEMENT is made pursuant to the provisions of Article I, Chapter 5, Division 7, Title I, of the Government Code of the State of California commencing with Section 6500, re- lating to the joint exercise of forces common to all public agencies; in this case, being all of the par- ties hereto which is authorized to contract with the other pursuant to such provisions. NOW THEREFORE, THE PARTIES AGREE AS FOLLOWS: PHASE IIIA ENLARGEMENT OF UNIT I Section 1. The ENCINA WATER POLLUTION CONTROL FACILITY (Unit I) shall be enlarged and improved to meet the future demands of the parties hereto and environmental protection requirements of applicable regulatory bodies and/or agencies. Said improvement and en- largement shall be designated as Phase IIIA Enlargement and shall be hereafter referred to by such designation. Section 2. The Phase IIIA Enlargement shall be a joint project of VISTA, CARLSBAD, BUENA, SAN MARCOS, LEUCADIA and ENCINITAS. LEUCADIA is hereby appointed as the administrator of the joint project and is author- ized upon approval of the 1981-1982 operation Oudget for the EWPCF to contract with such con- sulting engineers as necessary for engineering services hereinafter provided, and to prepare and file on behalf of the parties hereto, appropri- ate applications and other documents for approval of the joint project by any and all federal, state, county and/or city governments, or agencies, hav- ing jurisdiction over the joint project, or any part thereof pursuant to applicable law or regu- lation. LEUCADIA shall also cause to be prepared, by a contract with qualified engineers, an Envi- ronmental Impact Report for the Phase IIIA -3- Enlargement as the lead agency pursuant to the provisions of the Public Resources Code of the State of California, Seciton 21165. Section 3. ENGINEERING SERVICES The engineering services to be furnished by the Engineers pursuant to the contract authorized here- under shall include the following: (1) Environmental Impact Report, including public hearings and all supplemental reports as may be required. (2) Reports requiring services of licensed engi- neers as are necessary for submission to federal and state agencies as a condition to approval of the joint project. (3) Development and preparation of such additions, supplements, and/or modifications to the "Fi- nancial Plan and Revenue Program" developed for the Phase III Upgrading and Enlargement as are necessary to comply with applicable state and federal requirements. (4) Design services, including preparation of plans and specifications and office engineer- ing during construction. (5) Preparation of such modifications to the Phase III Project Report as are necessary by reason of the increased capacity to be created by Phase IIIA. (6) Preparation of modifications to the Phase III operation and maintenance manuals as are necessary by reason of the increased capacity provide for in this supplement to the BASIC AGREEMENT. (7) Miscellaneous engineering services. Section 4. PAYMENT FOR COSTS OF ENGINEERING SERVICES Each of the parties hereto shall advance to LEUCADIA of the costs of such engineer- ing services contracted for by LEUCADTA, as provided herein, in the following proportions: VISTA %, CARLSBAD %, BUENA %, SAN MARCOS %, LEUCAOZA %, and ENCINITAS %. Provided, however, the ultimate liability of the parties hereto, for the costs of such engineering services shall be equal to the total costs of such engi- neering services multiplied by the respective percentages of capacity each party will be entitled to in Unit I (Treatment Plant) at the conclusion of Phase IIIA Enlargement. The 1981-1982 ENCINA WATER POLLUTION CONTROL FACILITY OPERATION BUDGET shall include an amount estimated by the parties hereto at the time of approving such budget as necessary to pay the cost for all engineering services des- cribed above in Section 3 hereof. Each party hereto s>~all pay to LEUCADIA, as administrator, for said engineering services upon written de- mands forwarded to them by LEUCADIA. Such demands will be forwarded and such payments shall be made at such times as will enable LEUCADIA to pay for the costs of such engineering services in accordance with the contracts between LEUCADIA and the engineering firm or firms as authorized in Section 3 above herein, LEUCADIA shall be strictly accountable to all parties hereto for all funds received by it pursuant to this agree- ment, and shall maintain records of all receipts and disbursemtnts pursuant hereto. Section 5. Upon completion of the engineering services set out in Section 3 above, and the approval thereof by the parties 'lereto, LEUCADIA shall contract with such contractors as are necessary for the construction of the Phase IIIA Enlargement provided for herein. It is understood and agreed that there are not pres- ently available any grants-in-aid under state or federal law, or regulation, and that the costs of the Phase IIIA Enlargement shall be borne solely -5- 4 by all parties hereto. The respective liability of each party hereto for its share of the con- struction costs shall be the same percentage thereof as provided above in Section 4 for the •m apportionment of costs for engineering services. d The 1982-1983 ENCINA WATER POLLUTION CONTROL m FACILITY OPERATION BUDGET shall include an amount '* estimated by the parties hereto, at the time of «! approving such budget, as necessary to pay the & construction costs of Phase IIIA described in this supplement. Each party hereto shall pay to LEUCAOIA, as administrator, for construction costs as adopted in said budget upon written de- *mand forwarded to them by LEUCADIA. Such demands 41 will be forwarded and such payments shall be made " at such time as will enable LEUCADIA to pay for the costs of construction in accordance with the m construction contract or contracts entered into 4 between VISTA and the construction contractor or contractors. LEUCADIA shall be accountable to the parties hereto for all funds received by it and shall maintain records of all receipts and dis- -n bursemeni. to the same extent and degree as provided •I above in Section 4 for engineering funds. It is m further agreed that in the event any grants-in- — aid, state or federal, become available and are •m . received as and for assistance in either the en- «i gineering or construction costs of Phase IIIA Enlargement, the costs to each party hereto shall be reduced by the percentage of such grants-in-aid funds as each party's ownership interest in Unit I <• (Treatment Plant) bears to the total funds so * received. * Section 6. OWNERSHIP RIGHTS Upon completion of the Phase IIIA Enlargement of "• ' Unit I (Treatment Plant) and the payment by all <* parties hereto of the amount required to bo; paid -6- • o pursuant to the provisions of the Seventeenth Supplement, each party hereto shall have capacity rights in Unit I to the extent as hereinafter set forth. Upon completion of Phase IIIA Enlargement, the respective ownership and capacity rights in Unit I shall be as follows: OWNERSHIP AND CAPACITY RIGHTS AFTER PHASE III ENLARGEMENT • PARTY MOD PERCENTAGE VISTA CARLSBAD BUENA SAN MARCOS LEUCADIA ENCINITAS Section 7. LIMITATION UPON AUTHORITY OF LEUCADIA TO CONTRACT Upon the unanimous written approval by all members of the ENCINA JOINT POWERS JOINT ADVISORY COMMITTE of the engineering and design authorized above in Sec- . tion 3, and the 1981-1982 operation budget for the EWPCF, LEUCADIA shall be, and is hereby, authorized to enter into contracts with engineers and construc- tion contractors as are necessary to complete the Phase IIIA Enlargement, without further authoriza- tion by the parties hereto. Provided, however, the authority of LEUCADIA to enter into such contracts without the need for further authorization is lim- ited by the express condition precedent to the exercise of such authority, that the total cost for completion of Phase IIIA shall not exceed the aforesa:3 amounts established in the 1981-1982 and 1982-1983 operation budgets of the EWPCF for Phase IIIA Enlargement. Provided, further, that in the event the consulting engineer's estimate for engineering services for Phase IIIA Enlarge- ment exceed the amount budgeted therefor; or, in the event that the construction costs for comple- tion of Phase IIIA as evidenced by the lowest 4* m responsible bids for said construction exceed the amount budgeted therefor, then and in that event, LEUCADIA shall enter into no contract in connec- tion with said Phase IIIA without the prior written approval of the parties hereto. Section 8. COUNTERPARTS This agreement may be executed in counterparts, and upon execution thereof by all of the parties set forth on Page 1 hereof, each counterpart shall be deemed to be an original. IN WITNESS WHEREOF, each party hereto has caused this Seven- teenth Supplement to the Basic Agreement to be signed by its respective officials heretofore duly authorized by the legislative bodies thereof. VISTA SANITATION DISTRICT APPROVED BY RESOLUTION NO ON By APPROVED BY RESOLUTION NO ON ATTEST: CITY CLERK APPROVED BY RESOLUTION NO ON APPROVED BY RESOLUTION NO ON APPROVED BY RESOLUTION NO ON APPROVED BY REOLUTIOM NO ON CITY OF CARLSBAD By BUENA SANITATION DISTRICT By SAN MARCOS COUNTY DISTRICT By_ By LEUCADIA COUNTY WATER DISTRICT By_ By ENCINITAS SANITARY DISTRICT By By APPENDIX "B" CALIFORNIA REGIONAL WATER QUALITY BOARD CONTROL SAN DIEGO REGION ORDER NO. 79-46 NPDES NO. CA0107395 WASTE DISCHARGE REQUIREMENTS FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL o CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION ORDER NO. 79 - 46 NPDES NO. CA0107395 WASTE DISCHARGE REQUIREMENTS FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL The California Regional Water Quality Control Board, San Diego Region (hereafter Regional Board), finds that: 1. On May 23, 1977, this Regional Board adopted Order No. 77-19, National Pollutant Discharge Elimination System (NPDES) Permit No. CA0107395, WASTE DISCHARGE REQUIREMENTS FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL. Order No. 77-19 authorizes the discharge of up to 18 million gallons per day (MGD), average daily flow of treated waste- water containing pollutants to the Pacific Ocean, a navigable water of the United States, through an ocean outfall, at a point 7,800 feet offshore of the mouth of the Canyon de las Encinas in approximately 168 feet of water. 2. Effluent Limitation A.I of Order No. 77-19 contains interim effluent limitations for the Encina Joint Powers Regional Sewerage Agency's (JPRSA) water pollution control facility (WPCF) ocean outfall discharge which were to remain in effect until July 1, 1977. Effluent Limitation A.2 of Order No. 77-19 contains secondary treatment effluent limitations which would become effective after July 1, 1977 in accordance with the statutory require- ments of the Federal Water Pollution Control Act and the State of California's Porter-Cologne Water Quality Control Act. 3. On May 23, 1977, this Regional Board adopted Order No. 77-24, AN ORDER FOR ISSUANCE OF A TIME SCHEDULE AND INTERIM REQUIREMENTS FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL. Order No. 77-24 found that the County of San Diego, Department of Sanitation and Flood Control, on behalf of the Encina JPRSA,had submitted evidence documenting that compliance with the secondary effluent limitations contained in Order No. 77-19 could not be achieved by July 1, 1977. Order No. 77-24 established a time schedule directing the Encina Joint Powers to achieve compliance with the secondary effluent limitations contained in Order No. 77-19 by May 15, 1982. 4. On July 24, 1978, this Regional Board adopted Order No. 78-33, AN ORDER REQUIRING THE ENCINA JOINT POWERS REGIONAL SEWERAGE AGENCY TO CEASE AND DESIST FROM VIOLATING OR THREATENING TO VIOLATE PROVISION C.4 OF ORDER NO. 77-19 ADOPTED BY THE CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION, in response to numerous violations of Order No. 77-19 relating to the presence of sewage odors beyond the limits of the Encina WPCF. The Encina Agency has implemented plant improvements to eliminate offsite odors of sewage or sewage sludge origin. However, Order No: 78-33 shall remain in effect for some time to assure that consistent compliance with Provision C.4 of this Order is maintained. Order No. 78-33 will hereafter apply to Provision C.4 of this Order. Order No. 79-46 -2- The Encina JPRSA is composed of the following member agencies: The Vista Sanitation District, the City of Carlsbad, the San Marcos County Water District, the Buena Sanitation District, the Leucadia County Water District, and the Encinitas Sanitary District. The Encina JPRSA owns both the Encina Ocean Outfall and the Encina Water Pollution Control Facility. The Encina WPCF is a primary treatment plant presently treating approximately 12 MGD of wastewater. Wastewater from the Encina WPCF is discharged to the Pacific Ocean through the Encina WPCF ocean outfall as discussed in Finding No. 1. In a letter dated June 6, 1978, Mr. Les Evans, General Manager, Encina JPRSA, requested that the time schedule contained in Order No. 77-24 for achieving compliance with secondary treatment effluent limitations, described in Findings No. 2 and No. 3, be extended to July 1, 1983. The time schedule request was made in accordance with Section 301(i)(l) of the Clean Water Act of 1977. 8. On May 21, 1979, this Regional Board adopted Order No. 79-35, WASTE DISCHARGE REQUIREMENTS FOR LEUCADIA COUNTY WATER DISTRICT FOREST R. GAFNER WATER RECLAMA- TION PLANT NEAR CITY OF CARLSBAD. Order No. 79-35 provided, in part, for the discharge of secondary quality effluent into the Encina ocean outfall from the Leucadia County Water District treatment plant. It is anticipated that the use of the Encina outfall will increase as more reclamation treatment plants are constructed in the Encina JPRSA service area. These secondary quality effluents will blend with the primary effluent from the Encina WPCF and then be discharged through the outfall. 9. The State Water Resources Control Board adopted a revised "Water Quality Control Plan, Ocean Waters of California 1978," on January 19, 1978. This Plan contains water quality objectives for the following parameters in order to protect the beneficial uses of the Pacific Ocean: (a) Bacteria (b) Physical characteristics (c) Chemical characteristics (d) Biological characteristics (e) Toxicity (f) Radioactivity 10. The "Comprehensive Water Quality Control Plan Report, San Diego Region (9)" (Basin Plan) adopted by this Regional Board on March 17, 1975 and approved o Order No. 79-46 -3- by the State Water Resources Control Board on March 20, 1975, and updated by the Regional Board on February 27, 1978, established water quality objectives for the Pacific Ocean. 11. The beneficial uses of the Pacific Ocean include industrial service supply, navigation, water contact and noncontact water recreation, ocean commercial and sport fishing, preservation of areas of biological significance, preser- vation of rare and endangered species, marine habitat, fish migration, and shellfish harvesting. 12. Effluent limitation, national standards of performance, toxic and pretreat- ment effluent standards, and ocean discharge criteria established pursuant to Sections 208(b), 301, 302, 303(d), 304, 306, 307 and 403 of the Federal Water Pollution Control Act and amendments thereto are applicable to the discharge. 13. The Regional Board, in establishing the requirements contained herein, considered factors including, but not limited to, the following: (a) Past, present, and probable future beneficial uses of water. (b) Environmental characteristics of the hydrographic unit under consider- ation, including the quality of water available thereto. (c) Water quality conditions that could reasonably be achieved through the coordinated control of all factors which affect water quality in the area. 14. The Regional Board has notified the discharger and all known interested parties of its intent to prescribe waste discharge requirements for the discharge. 15. The Regional Board in a public meeting heard and considered all comments pertaining to the discharge. 16. This Order shall serve as a National Pollutant Discharge Elimination System Permit pursuant to Section 402 of the Federal Water Pollution Control Act, or amendments thereto. 17. The issuance of waste discharge requirements for this discharge is exempt from the provisions of Chapter 3 (commencing with Section 21000) of Division 13 of the Public Resources Code in accordance with Water Code Section 13389. IT IS HEREBY ORDERED, That the Encina Joint Powers Regional Sewerage Agency, in order to meet the provisions contained in Division 7 of the California Water Code, and regulations adopted thereunder, and the provisions of the Federal Water Pollution Control Act, and regulations and guidelines adopted thereunder, shall comply with the following: c *«• A Order No. 79-46 -4- A. EFFLUENT LIMITATIONS* 1. Until January 1, 1983, or secondary treatment facilities are available, whichever occurs first, the discharge of wastewater containing pollutants in excess of the following effluent limitations through the Encina WPCF ocean outfall is prohibited: Constituent Total suspended solids Grease and oil Unit mg/1 Ibs/day mg/1 Ibs/day Monthly^ average 125 18,765 30 4,504 Daily^ maximum 150 22,518 75 11,259 3/Instantaneous- maximum 150 22,518 75 11,259 After January 1, 1983, or secondary treatment facilities are available, whichever occurs first, the discharge of an effluent containing pollutants in excess of the following effluent limitations through the Encina WPCF ocean outfall is prohibited: Constituent Biochemical /• / oxygen demand" Suspended solids- Grease and oil Unit mg/1 , , Ibs/day^' mg/1 Ibs/day mg/1 Ibs/day Monthly^' average 30 4,504 30 4,504 25 3,753 Weekly^' average 45 6,755 45 6,755 40 6,005 Daily^' maximum 50 7,506 50 7,506 75 11,259 Ins tantaneous— maximum 50 7,506 50 7,506 75 11,259 "* The effluent limitations for Ocean Plan Table B constituents were determined using an initial dilution factor of 153.99 and applying the calculation procedures ** found in "Water Quality Control Plan, Ocean Waters of California 1978." m Note: mg/1 = milligrams per liter "* Ibs/day = pounds per day * A list of all footnotes referenced will be found following the past page of the •* waste discharge requirements section. Order No. 79-46 -5- The discharge of an effluent containing pollutants in excess of the following limits through the Encina WPCF ocean outfall is prohibited: •*• m m * -V <• m m m m m 4 •m * m Constituent Settleable solids Turbidity pH Toxicity concentration Arsenic Cadmium Total chromium Copper Lead Mercury Nickel Silver Zinc Cyanide Phenolic compounds Total chlorine residual Ammonia (expressed as nitrogen) Unit ml/1 NTU Units tu mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day mg/1 Ibs/day 6-'MDnth~^ Monthly™ median average 1.0 75 Within limits of 6.0 1.5 0.778 116.8 0.465 69.8 0.310 46.5 0.467 70.1 1.240 186.1 0.01246 1.9 3.10 465.4 0.04511 6.8. 1.868 280.4 0.775 116.3 4.65 698.1 0.310 46.5 93.0 13961.2 Weekly^' Daily-' Instantaneous^' average maximum maximum 1.5 3.0 100 225 to 9.0 at all times 2.0 2.5 4.498 675.2 1.860 279.2 1.240 186.1 2.792 419.1 4.960 744.6 0.07756 11.6 12.40 1861.5 0.2543 38.2 11.17 1676.8 3.10 465.4 18.60 2792.2 1.705 255.9 372.0 55845 3.0 225 2.5 11.937 1792.0 4.65 698.1 3.10 465.4 7.44 1117.0 12.40 1861.5 0.2077 31.2 31.0 4653.7 0.6728 101.0 29.8 4473.6 7.75 1163.4 46.5 6980.6 19.219 2885.2 929.9 139602.6 n m Note: NTU = Nephelometric Turbidity Units tu = toxicity units Order No. 79-46 -6- Constituent Total chlorinated pesticides and PCB's Unit mg/1 Ibs/day 6-Month-^' median 0.002 0.3 Monthly^' average — Weekly^ average — Daily^ maximum 0.004 0.6 Ins tantaneous— maximum 0.006 0.9 Radioactivity Not to exceed limits specified in Section 30269 of the California Administrative Code B. RECEIVING WATER LIMITATIONS 1. The discharge shall not cause the following limits tQ.be exceeded in the receiving water outside of the initial dilution— zone: * •m Constituent Arsenic Cadmium Total chromium Copper Lead Mercury Nickel Silver Zinc Cyanide Phenolic compounds Total chlorine residual Ammonia (expressed as nitrogen) Toxicity concen- tration Unit mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 tu 6-Month-^' median 0.008 0.003 0.002 0.005 0.008 0.00014 0.02 0.00045 0.020 0.005 0.03 0.002 0.6 0.05 Daily^ maximum 0.032 0.012 0.008 0.020 0.032 0.00056 0.08 0.0018 0.08 0.02 0.12 0.011 2.4 WM Ins tantaneous— maximum 0.08 0.03 0.02 0.05 0.08 0.0014 0.2 0.0045 0.2 0.05 0.3 0.124 6.0 •"*"" The discharge shall not cause concentrations of coliform organisms within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas^.'outside of this zone used for body- contact sports, to exceed the following: A Most Probable Number of 1,000 per 100 ml (10 per ml) in more than 20 percent of the samples at any sampling station in any 30 day period, or a Most Probable Number of 10,000 per 100 ml (100 per ml) in any single sample when verified by a repeat sample taken within 48 hours. c Order No. 79-46 -7- 3. The discharge shall not cause the concentration of total coliform organisms in any areasli/ where shellfish may be harvested for human consumption to exceed the following: A median Most Probable Number of 70 per 100 ml with not more than 10 percent of the samples exceeding a Most Probable Number of 230 per 100 ml. 4. The discharge shall not cause: (a) Floating particulates or grease and oil to be visible at any location; (b) Aesthetically undesirable discoloration on the ocean surface at any location; . (c) The transmittance of natural light to be significantly— reduced at any point outside the initial dilution zone.-^' (d) The dissolved oxygen concentrations-^' of waters outside of the initial dilution zone*^' to be depressed more than 10 percent from concentrations which occur naturally; __. (e) The pH outside of the initial dilution zone^-' .to be changed more than 0.2 units from the pH which occurs naturally; (f) The rate of deposition of inert solids and the characteristics of inert solids in ocean sediments to be changed such that benthic communities are degraded;—' (g) The dissolved sulfide concentration of waters in and near sedi- ments to significantly^ increase above that present under natural conditions; (h) The concentration of substances set forth in Receiving Water Limitations B.I, in marine sediments to increase to levels which would degrade^' indigenous biota; (i) The concentrations of organic materials in marine sediments to increase above those which would degrade^' marine life; (j) Nutrient materials in concentrations that would cause objection- able aquatic growths or degrade—indigenous biota; (k) Marine communities including vertebrate, invertebrate, and plant species to be degraded;-=i' or (l) Alteration of natural taste, odor, and color of fish, shellfish or other marine resources used for human consumption. PROVISIONS 1. This Order is established only for a waste disposal operation as herein- before described and an average daily waste discharge volume not in excess of 18.0 MOD. 2. Neither the treatment nor the discharge of pollutants shall create a pollution, contamination or nuisance as defined by the California Water Code. Order No. 79-46 -8- 3. Bypassing or direct discharge of treated or untreated liqxiid or solid wastes to any inland watercourse or the Pacific Ocean is prohibited. 4. Odors, vectors and other nuisances of sewage or sewage sludge origin beyond the limits of the treatment plant site are prohibited. 5. All waste treatment and disposal facilities shall be protected against a 100-year frequency flood as defined by the San Diego County Flood Control Agency. 6. This Order includes Items 1, 2, 4 and 5 of the attached "Reporting Requirements.": 7. This Order includes Items, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the attached "Standard Provisions." 8. This Order includes the attached "General Monitoring and Reporting Provisions." 9. Pursuant to Section 301(i)(l) of the Federal Water Pollution Control Act, the Encina Joint Powers shall achieve compliance with the require- ments of Effluent Limitation A.2 in accordance with the following time schedule: Task Item Secondary collector Award fabrication contract Progress report Delivery of secondary collectors Installation of secondary collectors Belt filter presses Award fabrication contract Progress report Delivery of filter presses Installation of' filter presses Time Completion date 12/15/79 6/01/80 11/15/80 1/15/81 1/01/80 6/01/80 12/01/80 2/15/81 Schedule Report of cornel iance date 1 /01/30 6/15/80 12/01/80 2/01 /81 J. 715/80 6/15/80 12/15/80 3/01/81 Engine generators Accept Step 3 grant offer 10/15/79 11/01/79 Award fabrication contract 1/15/80 2./01/80 Order No. 79-46 -9- o Task Engine generators (continued) Aeration air blowers Bar screens Sludge thickening equipment Site preparation drainage and misc. structures Time Completion Item date Progress report Progress report Progress report Delivery of engine generators installation of engine generators Accept Step 3 grant offer Award fabrication contract Progress report Delivery of aeration air blowers Installation of aeration air blowers Award fabrication contract Progress report Delivery of bar screens Progress report Installation of bar screens Accept Step 3 grant offer Award fabrication contract Progress report Delivery of sludge thickening equipment Installation of sludge thickening equipment Award construction contract Begin construction Complete earthwork for contract 8 Complete earthwork for contract 9 Complete earthwork for contract 10 Progress report Complete contract 7/01/80 1/01/81 7/01/81 11/01/81 1/01/82 10/15/79 1/15/80 7/01/80 11/01/81 1/01/82 1/01/80 7/01/80 1/01/81 7/01/81 1/01/82 10/15/79 1/15/80 7/01/80 2/01/81 4/01/81 1/15/80 2/01/80 3/15/80 4/15/80 5/15/80 11/01/80 1/01/81 Schedule Report of compliance date 7/15/80 1/15/81 7/15/81 11/15/81 1/15/82 11/01/79 2/01/80 7/15/80 11/15/81 1/15/82 1/15/80 7/15/80 1/15/81 7/15/81 1/15/82 11/01/79 2/01/80 7/15/80 2/15/81 4/15/81 2/01/80 2/15/80 4/01/80 5/01/80 6/01/80 11/15/80 1/15/81 o Order No. 79-46 -10- -*! m Task Operations building Secondary facilities Sludge dewatering and thickening facilities Headworks , power and maintenance building, digester facilities, effluent pumping station, chlorination facilities, yard piping, electrical, instrxunentation and controls, site work Achieve full compliance Item Accept Step 3 grant offer Award construction contract Begin construction Progress report Complete contract Accept Step 3 grant award Award construction contract Begin construction Progress report Progress report Completion of contract Submit plans and specs, to Div. of Water Quality Accept Step 3 grant award Award construction contract Begin construction Progress report Completion of contract Submit plans and specs, to Div. of Water Quality Accept Step 3 grant offer Award construction contract Begin construction Progress report Progress report Completion of contract Time Completion date 10/15/79 3/01/80 3/15/80 ' 9/01/80 3/15/81 10/15/79 4/15/80 5/01/80 11/01/80 4/01/81 8/01/81 1/01/80 2/01/80 5/15/80 6/01/80 12/01/80 7/01/81 4/01/80 5/01/80 12/15/80 1/01/81 7/01/81 1/01/82 7/01/82 1/01/83 Schedule Report of compliance date 11/01/79 3/15/80 4/01/80 9/15/80 4/01/81 11/01/79 5/01/80 5/15/80 11/15/80 4/15/81 8/15/81 1/15/80 2/15/80 6/01/80 6/15/80 12/15/80 7/15/81 4/15/80 5/15/80 1/01/81 1/15/81 7/15/81 1/15/82 7/15/82 1/15/83 Order No. 79-46 -11- (a) The discharger shall submit to the Regional Board, on or before each compliance report date, a report of compliance or noncompliance with the specific task. If noncompliance is being reported, the reasons for such noncompliance shall be stated, plus an estimate of the date of compliance. The discharger shall notify the Regional Board by letter upon return to compliance with the time schedule. (b) In the interim, until the upgraded Encina Water Pollution Control Facilities are available, the Encina Joint Regional Sewerage Agency shall comply with the requirements of Effluent Limitations A.I and A.3. 10. Order No. 77-19 and Order No. 77-24 are rescinded when this Order becomes effective. 11. The discharger shall comply with Monitoring and Reporting Program No. 79-46 as contained in this Order or as modified by the Executive Officer. Within 30 days of the adoption of this Order, the discharger shall submit, in writing, the name of the person authorized to sign the monitoring reports in accordance with the attached "General Moni- toring and Reporting Provisions." In accord with the provisions of Section 13267(b) of the Water Code, the monitoring reports shall be submitted under penalty of perjury. 12. This Order expires September 24, 1984 and the Encina JPRSA must file a Report of Waste Discharge in accordance with Title 23, California Administrative Code, not later than 180 days in advance of such date as application for issuance of new waste discharge requirements. 13. This Order shall remain applicable regardless of changes in ownership or lessee. In the event of any change in control or ownership of land or waste discharge facilities presently owned or controlled by the discharger, the discharger shall notify the succeeding owner or operator of the existence of this Order by letter, a copy of which shall be forwarded to this Board. 14. The discharger shall grant admission to the premises of the waste treatment and disposal facilities to members of this Regional Board and its staff at such times as may be necessary in the conduct of their duties in connection with the waste discharge requirements established herein. 15. A copy of these requirements shall be posted at a prominent location at or near the treatment and disposal facilities. 16. The above-prescribed waste discharge requirements are established only for (a) a discharge controlled by the Encina Joint Sewerage Agency; and (b) a waste disposal operation as described in the Report of Waste Discharge and in the findings of this Order. c o Order No. 79-46 -12- 17. This Order does not relieve the discharger of the responsibility to obtain other necessary local, state and federal permits to construct facilities necessary for compliance with this Order; nor does this Order prevent imposition of additional standards, requirements, or conditions by any other regulatory agency. 18. This permit shall be modified, or alternatively, revoked and reissued to incorporate an approved Riblicly Owned Treatment Warks (POTW) Pretreatment Program or a compliance schedule for the development of a POTW Pretreatment Program as required under Section 402(b)(8) of the Clean Water Act and implementing regulations or by the requirements of the approved State Pretreatment Program, as appropriate. I, Leonard Burtman, Executive Officer, do hereby certify the foregoing is a full, true, and correct copy of an Order adopted by the California Regional Water Quality Control Board, San Diego Region, on September 24, 1979. Leonard Burtman Executive Officer m m „, CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION ** Footnote references for Monitoring and Reporting Program No. 77-46 (NPDES * Permit No. CA0107395) - ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL 1. Monday through Friday. m 2. Samples shall be collected at times when wastewater flows and characteristics * are most demanding on treatment and disinfection procedures. « 3. Analysis to be performed according to method contained in Methods for "* Chemical Analysis of Water and Wastes, 1971, Environmental Protection — Agency, Analytical Quality Control Laboratory, Cincinnati, Ohio, page 134. Available from the Superintendent of Documents, U.S. Government Printing , Office, Washington, D.C., 20402. 4. Analysis to be performed according to American Society for Testing Material Method D, 3223-73, Journal of the American Water Works Association, Vol. 64, No. 1, pp. 20-25 (January 1972). * 5. Analysis to be performed according to interim procedures for algicides, * chlorinated organic compounds and pesticides which can be obtained from m the Methods Development and Quality Assurance Research Laboratory, National Environmental Research Center, U.S. EPA, Cincinnati, Ohio, 45268. •Wl 6. Surface and middepth. * 7. Surface. "*"" 8. Middepth and bottom. 9. Surface, middepth and bottom. <4*H 10. The aerial extent of all kelp beds within a one-mile radius of the center ** of the outfall diffuser section shall be determined by aerial photography. un 11. Samples are to be collected with a Peterson, Smith-Mclntyre, or orange- •<• peel-type dredge having an open sampling area of not less than 125 square — inches and a sediment capacity of not less than 210 cubic inches. The sediment shall be sifted through a one millimeter mesh screen and all * organisms shall be identified to as low a taxon as possible. 12. Analyses to be performed on upper two inches of core. 13. Sampling techniques will follow those employed by biologist divers of the * California State Department of Fish and Game. * In sandy areas a 30 meter band transect, one meter wide shall be established m on the ocean bottom. Operations at each underwater station shall include: (1) Water temperature (may be measured from a boat), estimated visibility Footnote references - Order No. 79-46 Page 2 (NPDES Permit No. CA0107395) - ENCINA OCEAN OUTFALL * and pelagic macrobiota at each 10-foot depth increment throughout the water column and at the bottom recorded; (2) general bottom description ** recorded; (3) height, period, and crest direction of ripple marks recorded; 4 (4) amount, description, and location of detritus on bottom recorded; (5) representative photographic record of sampled area taken; and (6) within m each band, three cores of at least 42.5 cm in area shall be randomly taken to a depth of 15 cm where possible, (the three cores may be taken from a boat) and the material removed sifted through at least, a 1 millimeter mesh m screen, and all organisms identified to as low a taxon as possible, enumerated, measured, and reproductive condition assessed where feasible.* In rocky or cobble areas, a 30 meter band transect, one meter wide shall "* be established on the ocean bottom. Operations at each underwater station * shall include: (1) Water temperature (may be made from a boat), estimated visibility, and pelagic macrobiota at each 10-foot depth increment throughout "" the water column and at the bottom recorded; (2) general bottom description — recorded; (3) enumeration by estimate of the larger plants and animals in the band transect area recorded; (4) representative photographic record of •m sampled area taken; and (5) within each band, three one-quarter meter square areas shall be randomly selected and all macroscopic plant and animal life shall be identified to as low a taxon as possible and measured. For both eipfauna and infauna, size frequency distribution shall be shown * for at least the three numerically largest populations identified to the lowest possible taxon and appropriate graphs showing the relationship m between species frequency and population shall be plotted from each sample. o o CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION REPORTING REQUIREMENTS 1. THE DISCHARGER SHALL FILE WITH THE BOARD AND THE REGIONAL ADMINISTRATION OF THE ENVIRONMENTAL PROTECTION AGENCY TECHNICAL REPORTS ON SELF-MONITORING WORK PERFORMED ACCORDING TO THE DETAILED SPECIFICATIONS CONTAINED IN ANY MONITORING AND REPORTING PROGRAM AS DIRECTED BY THE EXECUTIVE OFFICER. *2. THE DISCHARGER SHALL FILE A WRITTEN REPORT WITH THE BOARD WITHIN 90 DAYS AFTER THE AVERAGE DRY-WEATHER WASTE FLOW FOR ANY MONTH EQUALS OR EXCEEDS 75 PERCENT OF THE DESIGN CAPACITY OF HIS WASTE TREATMENT AND/OR DISPOSAL FACILITIES. THE DISCHARGER'S SENIOR ADMINISTRATIVE OFFICER SHALL SIGN A LETTER WHICH TRANSMITS THAT REPORT AND CERTIFIES THAT THE POLICYMAKING BODY IS ADEQUATELY INFORMED ABOUT IT. THE REPORT SHALL INCLUDE: AVERAGE DAILY FLOW FOR THE MONTH, THE DATE ON WHICH THE INSTANTANEOUS PEAK FLOW OCCURRED, THE RATE OF THAT PEAK FLOW, AND THE TOTAL FLOW FOR THAT DAY. THE DISCHARGER'S BEST ESTIMATE OF WHEN THE AVERAGE DAILY DRY-WEATHER FLOW RATE WILL EQUAL OR EXCEED THE DESIGN CAPACITY OF HIS FACILITIES. THE DISCHARGER'S INTENDED SCHEDULE FOR STUDIES, DESIGN, AND OTHER STEPS NEEDED TO PROVIDE ADDITIONAL CAPACITY FOR HIS WASTE TREATMENT AND/OR DISPOSAL FACILITIES BEFORE THE WASTE FLOW RATE EQUALS THE CAPACITY OF PRESENT UNITS. (REFERENCE: SECTIONS 13260, 13267U), AND 13268, CALIFORNIA WATER CODE.) **3» THE DISCHARGER SHALL NOTIFY THE BOARD NOT LATER THAN 180 DAYS IN ADVANCE OF IMPLEMENTATION OF ANY PLANS TO ALTER PRODUCTION CAPACITY OF THE PRODUCT LINE OF THE MANUFACTURING, PRODUCING OR PROCESSING FACILITY BY MORE THAN TEN PERCENT. SuCH NOTIFICATION SHALL INCLUDE ESTIMATES OF PROPOSED PRO- DUCTION RATE, THE TYPE OF PROCESS, AND PROJECTED EFFECTS ON EFFLUENT QUALITY. NOTIFICATION SHALL INCLUDE SUBMITTAL OF A NEW REPORT OF WASTE DISCHARGE AND APPROPRIATE FILING FEE. *k. THE DISCHARGER SHALL NOTIFY THE BOARD OF (A) NEW INTRODUCTION INTO SUCH WORKS OF POLLUTANTS FROM A SOURCE WHICH WOULD BE A NEW SOURCE AS DEFINED IN SECTION 306 OF THE FEDERAL WATER POLLUTION CONTROL ACT, OR AMENDMENTS THERETO, IF SUCH SOURCE WERE DISCHARGING POLLUTANTS TO THE WATERS OF THE UNITED STATES, (B) NEW INTRODUCTIONS OF POLLUTANTS INTO SUCH WORKS FROM A SOURCE WHICH WOULD BE SUBJECT TO SECTION 301 OF THE FEDERAL WATER POLLUTION CONTROL ACT, OR AMENDMENTS THERETO, IF IT WERE DISCHARGING SUCH POLLUTANTS TO THE WATERS OF THE UNITED STATES, (c) A SUBSTANTIAL CHANGE IN THE VOLUME OR CHARACTER OF POLLUTANTS BEING INTRODUCED INTO SUCH WORKS BY A SOURCE INTRODUCING POLLUTANTS INTO SUCH WORKS AT THE TIME THE WASTE * PUBLICLY OWNED FACILITIES ONLY ** FOR NONPUBLIC FACILITIES ONLY CRWQCB, SAN DIEGO REGION 11/73 REPORTING REQUIREMENTS -2- DISCHARGE REQUIREMENTS WERE ADOPTED. NOTICE SHALL INCLUDE A DESCRIPTION OF THE QUANTITY AND QUALITY OF POLLUTANTS AND THE IMPACT OF SUCH CHANGE ON THE QUANTITY AND QUALITY OF EFFLUENT FROM SUCH PUBLICLY OWNED TREATMENT WORKS. A SUBSTANTIAL CHANGE IN VOLUME IS CONSIDERED AN INCREASE OF TEN PERCENT IN THE MEAN DRY-WEATHER FLOW RATE. THE DISCHARGER SHALL FORWARD A COPY OF SUCH NOT ICE DIRECTLY TO THE REGIONAL ADMINISTRATOR. 5. THE DISCHARGER SHALL FILE WITH THE BOARD A REPORT OF WASTE DISCHARGE AT LEAST 120 DAYS BEFORE MAKING ANY MATERIAL CHANGE OR PROPOSED CHANGE IN THE CHARACTER, LOCATION OR VOLUME OF DISCHARGE. **6. THIS BOARD REQUIRES THE DISCHARGER TO FILE WITH THE BOARD, WITHIN 90 DAYS AFTER THE EFFECTIVE DATE OF THIS ORDER, A TECHNICAL REPORT ON HIS PREVENTIVE (FAIL-SAFE) AND CONTINGENCY (CLEANUP) PLANS FOR CONTROLLING ACCIDENTAL DISCHARGES, AND FOR MINIMIZING THE EFFECT OF SUCH EVENTS. THE TECHNICAL REPORT SHOULD: IDENTIFY THE POSSIBLE SOURCES OF ACCIDENTAL LOSS, UNTREATED WASTE BYPASS, AND CONTAMINATED DRAINAGE. LOADING AND STORAGE AREAS, POWER OUTAGE, WASTE TREATMENT UNIT OUTAGE, AND FAILURE OF PROCESS EQUIPMENT, TANKS AND PIPES SHOULD BE CONSIDERED. EVALUATE THE EFFECTIVENESS OF PRESENT FACILITIES AND PROCEDURES AND STATE WHEN THEY BECAME OPERATIONAL. DESCRIBE FACILITIES AND PROCEDURES NEEDED FOR EFFECTIVE PRE- VENTIVE AND CONTINGENCY PLANS. PREDICT THE EFFECTIVENESS OF THE PROPOSED FACILITIES AND PROCEDURES AND PROVIDE AN IMPLEMENTATION SCHEDULE CONTAINING INTERIM AND FINAL DATES WHEN THEY WILL BE CONSTRUCTED, IMPLE- MENTED, OR OPERATIONAL. (REFERENCE: SECTIONS 1326?(e) AND 13268, CALIFORNIA WATER CODE.) THIS BOARD, AFTER REVIEW OF THE TECHNICAL REPORT, MAY ESTABLISH CONDITIONS WHICH IT DEEMS NECESSARY TO CONTROL ACCIDENTAL DISCHARGES AND TO MINIMIZE THE EFFECTS OF SUCH EVENTS. SUCH CONDITIONS MAY BE INCORPORATED AS PART OF THIS ORDER, UPON NOTICE TO THE DISCHARGER. **?• THE DISCHARGER SHALL SUBMIT TO THE BOARD, BY JANUARY J>Q OF EACH YEAR, AN ANNUAL SUMMARY OF THE QUANTITIES OF ALL CHEMICALS LISTED BY BOTH TRADE AND CHEMICAL NAMES, WHICH ARE USED FOR COOLING AND/OR BOILING WATER TREAT- MENT AND WHICH ARE DISCHARGED. **FOR NONPU8LIC FACILITIES ONLY /*"- CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION STANDARD PROVISIONS 1. THE REQUIREMENTS PRESCRIBED HEREIN DO NOT AUTHORIZE THE COMMISSION OF ANY ACT CAUSING INJURY TO THE PROPERTY OF ANOTHER, NOR PROTECT THE DISCHARGER FROM HIS LIABILITIES UNDER FEDERAL, STATE, OR LOCAL LAWS, NOR GUARANTEE THE DISCHARGER A CAPACITY RIGHT IN THE RECEIVING WATERS. 2. THE DISCHARGE OF ANY RADIOLOGICAL, CHEMICAL, OR BIOLOGICAL WARFARE AGENT OR HIGH LEVEL RADIOLOGICAL WASTE IS PROHIBITED. *3. THE DISCHARGER SHALL REQUIRE ANY INDUSTRIAL USER OF THE TREATMENT WORKS TO COMPLY WITH APPLICABLE SERVICE CHARGES AND TOXIC AND PRETREATMENT STANDARDS PROMULGATED IN ACCORDANCE WITH SECTIONS 2C4(s), 30?, AND 308 OF THE FEDERAL WATER POLLUTION CONTROL ACT OR AMENDMENTS THERETO. THE DISCHARGER SHALL REQUIRE EACH INDIVIDUAL USER TO SUBMIT PERIODIC NOTICE (OVER INTERVALS NOT TO EXCEED NINE MONTHS) OF PROGRESS TOWARD COMPLIANCE WITH APPLICABLE TOXIC AND PRETREATMENT STANDARDS DEVELOPED PURSUANT TO THE FEDERAL WATER POLLUTION CONTROL ACT OR AMENDMENTS THERETO. THE DISCHARGER SHALL FORWARD A COPY OF SUCH NOTICE TO THE BOARD AND THE REGIONAL ADMINISTRATOR OF THE ENVIRON- MENTAL PROTECTION AGENCY. k. THE DISCHARGER SHALL PERMIT THE REGIONAL BOARD: . (A) ENTRY UPON PREMISES IN WHICH AN EFFLUENT SOURCE is LOCATED OR IN WHICH ANY REQUIRED RECORDS ARE KEPTj (B) ACCESS TO COPY ANY RECORDS REQUIRED TO BE KEPT UNDER TERMS AND CONDITIONS OF THIS ORDER; (c) INSPECTION OF MONITORING EQUIPMENT OR RECORDS, AND (D) SAMPLING OF ANY DISCHARGE. 5. ALL DISCHARGES AUTHORIZED BY THIS ORDER SHALL BE CONSISTENT WITH THE TERMS AND CONDITIONS OF THIS ORDER. THE DISCHARGE OF ANY POLLUTANT MORE FREQUENTLY THAN OR AT A LEVEL IN EXCESS OF THAT IDENTIFIED AND AUTHORIZED BY THIS ORDER SHALL CONSTITUTE A VIOLATION OF THE TERMS AND CONDITIONS OF THIS ORDER. 6. THE DISCHARGER SHALL MAINTAIN IN GOOD WORKING ORDER AND OPERATE AS EFFICIENTLY AS POSSIBLE ANY FACILITY OR CONTROL SYSTEM INSTALLED BY THE DISCHARGER TO ACHIEVE COMPLIANCE WITH THE WASTE DISCHARGE REQUIREMENTS. *PuBLICLY OWNED FAC ILITIES ONLY CRWQCB, SAN DIEGO REGION 11/73 STANDARD PROVISIONS -2- 7. COLLECTED SCREENINGS, SLUDGES, AND OTHER SOLIDS REMOVED FROM LIQUID WASTES SHALL BE DISPOSED OF AT A LEGAL POINT OF DISPOSAL, AND IN ACCORDANCE WITH THE PROVISIONS OF DIVISION ?»5 OF THE CALIFORNIA WATER CODE. FOR THAT PURPOSE OF THIS REQUIREMENT, A LEGAL POINT OF DISPOSAL IS DEFINED AS ONE FOR WHICH WASTE DISCHARGE REQUIREMENTS HAVE BEEN PRESCRIBED BY A REGIONAL WATER QUALITY CONTROL BOARD AND WHICH IS IN FULL COMPLIANCE THEREWITH. 8. AFTER NOTICE AND OPPORTUNITY FOR A HEARING, THIS ORDER MAY BE TERMINATED OR MODIFIED FOR CAUSE, INCLUDING, BUT NOT LIMITED TO I (A) VIOLATION OF ANY TERM OR CONDITION CONTAINED IN THIS ORDER; (B) OBTAINING THIS ORDER BY MISREPRESENTATION, OR FAILURE TO DISCLOSE FULLY ALL RELEVANT FACTS; (c) A CHANGE IN ANY CONDITION THAT REQUIRES EITHER A TEMPORARY OR PERMANENT REDUCTION OR ELIMINATION OF THE AUTHORIZED DISCHARGE. 9. IF A TOXIC EFFLUENT STANDARD OR PROHIBITION (INCLUDING ANY SCHEDULE OF COMPLIANCE SPECIFIED IN SUCH EFFLUENT STANDARD OR PROHIBITION) IS ESTABLISHED UNDER SECTION 30?(*) °? THE FEDERAL WATER POLLUTION CONTROL ACT, OR AMEND- MENTS THERETO, FOR A TOXIC POLLUTANT WHICH IS PRESENT IN THE DISCHARGE AUTHORIZED HEREIN AND SUCH STANDARD OR PROHIBITION IS MORE STRINGENT THAN ANY LIMITATION UPON SUCH POLLUTANT IN THIS ORDER, THE B0ARD WILL REVISE OR MODIFY THIS ORDER IN ACCORDANCE WITH SUCH TOXIC EFFLUENT STANDARD OR PROHI- BITION AND SO NOTIFY THE DISCHARGER. 10. THERE SHALL BE NO DISCHARGE OF HARMFUL QUANTITIES OF OIL OR HAZARDOUS SUBSTANCES, AS SPECIFIED BY REGULATION ADOPTED PURSUANT TO SECTION 311 Of THE FEDERAL WATER POLLUTION CONTROL ACT, OR AMENDMENTS THERETO. 11. IN THE EVENT THE DISCHARGER IS UNABLE TO COMPLY WITH ANY OF THE CONDITIONS OF THIS ORDER DUE TO: (A) BREAKDOWN OF WASTE TREATMENT EQUIPMENT; ACCIDENTS CAUSED BY HUMAN ERROR OR NEGLIGENCE; OR (c) OTHER CAUSES SUCH AS ACTS OF NATURE, THE DISCHARGER SHALL NOTIFY THE EXECUTIVE OFFICER BY TELEPHONE AS SOON AS HE OR HIS AGENTS HAVE KNOWLEDGE OF THE INCIDENT AND CONFIRM THIS NOTIFICA- TION IN WRITING WITHIN TWO WEEKS OF THE TELEPHONE NOTIFICATION. THE WRITTEN NOTIFICATION SHALL INCLUDE PERTINENT INFORMATION EXPLAINING REASONS FOR THE NONCOMPLIANCE AND SHALL INDICATE WHAT STEPS WERE TAKEN TO CORRECT THE PROBLEM AND THE DATES THEREOF, AND WHAT STEPS ARE BEING TAKEN TO PREVENT THE PROBLEM FROM RECURRING. CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN 01 EGO REGION GENERAL MONITORING AND REPORTING PROVISIONS GENERAL PROVISIONS FOR SAMPLING AND ANALYSIS UNLESS OTHERWISE NOTED, ALL SAMPLING) SAMPLE PRESERVATION, AND ANALYSES SHALL CONFORM TO THE U. S. ENVIRONMENTAL PROTECTION AGENCY APPROVED TEST PROCEDURES FOR THE ANALYSIS OF POLLUTANTS DESCRIBED IN PART 13^, VOLUME J$ (No. 199) OF" FEDERAL REGISTER PUBLISHED ON OCTOBER 16, 1973i o" THE LATEST EDITION OF FEDERAL REGISTER, OR AS APPROVED BY THE EXECUTIVE OFFICER. ALL ANALYSES SHALL BE PER- FORMED IN A LABORATORY CERTIFIED TO PERFORM SUCH ANALYSES BY THE CALIFORNIA STATED DEPARTMENT OF PUBLIC HEALTH OR A LABORATORY APPROVED BY THE EXECUTIVE OFFICER. EFFLUENT SAMPLES SHALL BE TAKEN DOWNSTREAM OF ANY ADDITION TO THE TREATMENT WORKS AND PRIOR TO MIXING WITH THE RECEIVING WATERS. THE DISCHARGER SHALL CALIBRATE AND PERFORM MAINTENANCE PROCEDURES ON ALL MONITORING INSTRUMENTS AND EQUIPMENT TO ENSURE ACCURACY OF MEASUREMENTS, OR. SHALL ENSURE THAT BOTH ACTIVITIES WILL BE CONDUCTED. A GRAB SAMPLE IS DEFINED AS AN INDIVIDUAL SAMPLE COLLECTED IN FEWER THAN 15 MINUTES. A COMPOSITE SAMPLE IS DEFINED AS A COMBINATION OF NO FEWER THAN EIGHT INDIVIDUAL SAMPLES OBTAINED OVER THE SPECIFIED SAMPLING PERIOD. THE VOLUME OF EACH INDIVIDUAL SAMPLE IS PROPORTIONAL TO THE DISCHARGE FLOW RATE AT THE TIME OF SAMPLING. THE SAMPLING PERIOD SHALL 'EQUAL THE DISCHARGE PERIOD, OR 2k HOURS, WHICHEVER PERIOD IS SHORTER. GENERAL PROVISIONS FOR REPORTING FOR EVERY ITEM WHERE THE REQUIREMENTS ARE NOT MET, THE DISCHARGER SHALL SUBMIT A STATEMENT OF THE ACTIONS UNDERTAKEN OR PROPOSED WHICH WILL BRING THE DISCHARGE INTO FULL COMPLIANCE WITH REQUIREMENTS AT THE EARLIEST TIME AND SUBMIT A TIME- TABLE FOR CORRECTION. BY JANUARY 30 OF EACH YEAR, THE DISCHARGER SHALL SUBMIT AN ANNUAL REPORT TO THE BOARD. THE REPORT SHALL CONTAIN BOTH TABULAR AND GRAPHICAL SUMMARIES OF THE MONITORING DATA OBTAINED DURING THE PREVIOUS YEAR. IN ADDITION, THE DISCHARGER SHALL DISCUSS THE COMPLIANCE RECORD AND THE CORRECTIVE ACTIONS TAKEN OR PLANNED WHICH MAY BE NEEDED TO BRING THE DISCHARGE INTO FULL COMPLIANCE WITH THE WASTE DISCHARGE REQUIREMENTS. - CRWQCB, SAN DIEGO REGION , 2/?6 GENERAL MONITORING AND REPORT PROVISIONS -2- DISCHARGER SHALL MAINTAIN ALL SAMPLING AND ANALYTICAL RESULTS) INCLUDING STRIP CHARTS; DATE, EXACT PLACE, AND TIME OF SAMPLING; DATE ANALYSES WERE PER- FORMED; ANALYST'S NAME; ANALYTICAL TECHNIQUES USED; AND RESULTS OF ALL ANALYSES. SUCH RECORDS SHALL BE RETAINED FOR A MINIMUM OF THREE YEARS. THIS PERIOD OF RETENTION SHALL BE EXTENDED DURING THE COURSE OF ANY UNRESOLVED LITIGATION REGARDING THIS DISCHARGE OR WHEN REQUESTED BY THE BOARD AND THE REGIONAL ADMINIS- TRATOR OF THE ENVIRONMENTAL PROTECTION AGENCY. MONITORING RESULTS SHALL BE SUBMITTED ON FORMS PROVIDED BY THE BOARD. MONITORING REPORTS SHALL BE SIGNED BY: (A) IN THE CASE OF CORPORATIONS, BY A PRINCIPAL EXECUTIVE OFFICER AT LEAST OF THE LEVEL OF VICE-PRESIDENT OR HIS DULY AUTHORIZED REPRESENTATIVE IS RESPONSIBLE FOR THE OVERALL OPERATION OF THE FACILITY FROM WHICH THE DISCHARGE ORIGINATES; (B) IN THE CASE OF A PARTNERSHIP, BY A GENERAL PARTNER; (c) IN THE CASE OF A SOLE PROPRIETORSHIP, BY THE PROPRIETOR; (D) IN THE CASE OF A MUNICIPAL, STATE OR OTHER PUBLIC FACILITY, BY EITHER A PRINCIPAL EXECUTIVE OFFICER, RANKING ELECTED OFFICIAL, OR OTHER DULY AUTHORIZED EMPLOYEE. THE DISCHARGER SHALL MAIL A COPY OF EACH MONITORING REPORT ON THE APPROPRIATE FORM TO BE SUPPLIED BY THE BOARD TO: EXECUTIVE OFFICER CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION 615^ MISSION GORGE ROAD, SUITE 205 SAN DIEGO, CALIFORNIA 92120 REGIONAL ADMINISTRATOR ENVIRONMENTAL PROTECTION AGENCY ATTENTION: PERMITS BRANCH 215 FREMONT STREET SAN FRANCISCO, CALIFORNIA 9^105 CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION ADDENDUM NO, 1 TO ORDER NO, 79-46 NPDES NO, CA0107395 AN ADDENDUM FOR THE ISSUANCE OF A TIME SCHEDULE FOR THE DEVELOPMENT OF A PRETREATMENT PROGRAM FOR'THE ENCINA JOINT POWERS REGIONAL SEWERAGE AGENCY SAN DIEGO COUNTY The California Regional Water Quality Control Board, San Diego Region (here- after Regional Board), finds that: 1. The Encina Joint Powers Regional Sewerage Agency as owner and operator of the Encina Water Pollution Control Facility is required to develop a pre- treatment program under the authority of Sections 307(b) and ^02(b) (8) of the Clean Water Act. 2. The Encina Joint Powers Regional Sewerage Agency consists of the follow- ing member agencies: The Vista Sanitation District, the City of Carlsbad, the San Marcos County Water District, the Buena Sanitation District, the Leucadia County Water District and the Encinitas Sanitary District. 3. The Regional Board has notified the Encina Joint Powers Regional Sewerage Agency and all known interested parties of its intent to prescribe a time schedule for the development of a pretreatment program. U. The Regional Board in a public meeting heard and considered all comments pertaining to the time schedule. IT IS HEREBY ORDERED, That the Encina Joint Powers Regional Sewerage Agency (hereafter discharger) shall comply with the following: 1. The discharger shall ensure compliance with pretreatment standards promul- gated under Section 307(b) and (c) of the Clean Water Act in accord with the following: (a) Compliance by existing industrial-sources with pretreatment standards shall be within three years of the date of promulgation of the standard unless a shorter compliance time is specified. (b) Compliance by new sources of industry with promulgated pretreatment standards shall be required upon commencement of discharge. 2. The discharger shall develop and implement a pretreatment program which shall consist of: (a) A local pretreatment ordinance or equivalent. c Addendum No, 1 to Order No. 79-^6 -2- 3. (b) A use permit system. (c) A program of inspection to ensure compliance with the ordinance and use permit. (d) .An enforcement program sufficient to obtain compliance with the pro- visions of the ordinance or use permit. For implementation of Order 2 above, the discharger shall comply with the following time schedule for the specified tasks: Task Completion date Report of completion date a. Submit•the results of an industrial user survey. 1/01/81 b. Submit an evaluation of the adminis- tration and enforcement of the requirements of Section 307(b) and (c) and U02(b) (8) of the Clean Water Act. Voi/8l c. Submit a determination of technical information necessary to develop the pretreatment ordinance or other means of enforcing pretreatment standards. 7/01/81 d. Submit an evaluation of the financial programs and revenue sources to implement the program. 7/01/81 e. Submit design of a monitoring program which will implement the requirements of the pretreatnent program. 7/01/81 f. Submit a list of monitoring equipment required to implement the pretreatment program and a description of municipal facilities necessary for monitoring and analysis of industrial wastes. 7/01/81 g. Submit specific effluent limitations for general prohibited pollutants (1*0 CFR U03.5) which shall be incor- porated into the pretreatment ordinance. 7/01/81 h. Submit complete pretreatment program package with request for pretreatment program approval. 10/01/81 1/15/81 U/15/81 7/15/81 7/15/81 7/15/81 7/15/81 7/15/81 10/15/81 c Addendum No. 1 to -3- Order No. 79-^6 The discharger shall submit to the Regional Board, on or "before each compliance report date, a report of compliance or noncompliance with the specific task. If noncompliance is being reported, the reasons for such noncompliance shall be stated, plus an estimate of the date of compliance. The discharger shall notify the Regional Board by letter upon return to compliance with the time schedule. PROVISIONS 1. Adequacy of any pretreatment prograa shall be determined by conformance with the State Water Resources Control Board's "Guidelines for Determining the Effectiveness of Local Source Control Programs" and EPA regulations governing pretreatment contained in Uo CFR 1*03. 2. The terms and conditions of the pretreatment program, when approved, shall be enforceable through the waste discharge requirements.contained in Order No. 79-^6. 3. This Addendum shall become effective 10 days after the date of its adoption provided the Regional Administrator, Environmental Protection Agency, has no objection. If the regional Administrator objects to its' issuance, this Addendum shall not become effective until such objection is withdrawn. h. The issuance of this Addendum is exempt from the provisions of Chapter 3 (.commencing with Sections 21000) of Division 13 of the Public Resources Code in accordance with Water Code Section 13389- •If Leonard Burtman, Executive Officer, do "hereby certify the foregoing is a full, true, and correct copy of an Adder£um adopted "by the California Regional Water Quality Control Board'3 San Diego P.sgion, on June 23 1980. JL"UL j Leonard Burtman Executive Officer DB:tb c CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION Footnote references for waste discharge requirements of Order No. 79-46 (NPDES Permit No. CA0107395) - ENCINA OCEAN OUTFALL 1. The monthly average shall be the arithmetic mean, using the results of analyses of all samples collected during any 30-consecutive calendar day period. 2. The daily maximum effluent limitation shall apply to the results of a single composite sample collected over a period of 24 hours. 3. The instantaneous maximum effluent concentration limit shall apply to grab sample determinations. 4. The discharge rate in pounds per day is obtained from the following calculation for any calendar day: N Discharge Rate (ibs/day) = 8.34 £ Q. c. ~ i ' l in which N is the number of samples analyzed in any calendar day. Qi and Ci are the flow rate (MGD) and the constituent concentration (mg/1) respectively, which are associated with each of N grab samples which may be taken in any calendar day. If a composite sample is taken, Cj[ is the concentration measured in the composite sample, and Qi is the average flow rate occurring during the period over which samples are composited. 5. The weekly average shall be the arithmetic mean using the results of analyses of all samples collected during any seven consecutive calendar day period. 6. The arithmetic mean of BOD and suspended solids values, by weight, for effluent samples collected in a period of 30 consecutive calendar days shall not exceed 15 percent of the arithmetic mean of values, by weight, for influent samples collected at approximately the same times during the same period. 7. The six-month median effluent concentration limit shall apply as a moving median of daily values for any 180-day period in which daily values repre- sent flow weighted average concentrations within a 24-hour period. For intermittent discharges, the daily value shall be considered to equal zero for days on which no discharge occurred. 8. Body-contact sports areas outside the shoreline zone and all shellfishing areas shall be determined by the Regional Board on an individual basis. 9. A significant difference is defined as a statistically significant difference in the means of two distributions of sampling results at the 95 percent confidence level. Footnote references - Order No. 79-46 Page 2 (NPDES Permit No. CA0107395) - ENCINA OCEAN OUTFALL 10. Initial dilution is the process which results in the rapid and irre- versible turbulent mixing of wastewater with ocean water around the point of discharge. 11. Degradation shall be determined by analysis of the effects of waste discharge on species diversity, population density, contamination, growth anomalies, debility, or supplanting of normal species by undesirable plant and animal species. 12. Compliance with this water quality objective shall be determined from samples collected at stations representative of the area within the waste field where initial dilution is completed. m •m CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION TECHNICAL CHANGE ORDER NO. T-l FOR MONITORING AND REPORTING PROGRAM NO. 79-46 (NPDES NO. CA0107395) FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL During the 12-incnth period immediately preceding the date of expiration of Order No. 79-46, the intensive receiving water and sediment monitoring schedule as specified in the monitoring and reporting program shall be observed. All sampling shall be conducted at the greatest frequencies speci3':ied, regardless of the quality of the effluent discharged to the outfall. These intensive receiving water and sediment monitoring reports shall be submitted according to the repotting frequency specified in the monitoring and reporting program. In addition, these reports are to be attached to the discharger's Report of Waste Discharge submitted as application for issuance of new waste discharge requirements. All the provisions of Monitoring and Reporting Program No. 79-46 shall remain in effect. The Executive Officer may, if the effluent does not comply with the effluent limitations, require that intensive receiving water sr.d .sediment monitoring be initiated at any time. Authorized by: •P ., .* t^_ ''•-£•/ <-^'~^£'~'s-'1^e3~is^ Leonard Burtrnan Executive Officer December 18, 1979 Distribution: </!> i s c h ar g e r •/ Statg Board i/ Consulti.T..< Agencies t/_Field Staff .-KyL.fllf!S i/ Undistrisuc':j CTdars Oclic-rs (iisc belovj o CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION MONITORING AND REPORTING PROGRAM NO. 79 - 46 FOR THE ENCINA WATER POLLUTION CONTROL FACILITY OCEAN OUTFALL NPDES NO. CA0107395 EFFLUENT MONITORING A sampling station shall be established downstream from the last connection through which wastes can be admitted to the outfall and shall be located where representative samples of the discharge can be obtained. The following shall constitute the effluent monitoring program: Determination Flow pH Biochemical oxygen demand Chlorine residual Suspended solids - Total Suspended solids - Volatile Settleable solids Turbidity Grease and oil Toxicity concentration Ammonia!/ (as nitrogen) Cyanide Metals Arsenic Cadmium Chromium, total Copper Lead Mercury—' Nickel Silver Zinc Chromium, Hexavalent Total identifiable chlorinated hydrocarbons—' Phenolic compounds Radioactivity Unit MGD Units mg/1 mg/1 mg/1 mg/1 ml/1 NTU mg/1 tu mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 pCi/1 Type of sample Grab!/ 24-hr, composite Grab!/ 24-hr, composite 24-hr, composite Grab!/ 24-hr, composite Grab!/ Grab!/ 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite 24-hr, composite Minimum frequency of analysis Continuous Daily!/ Daily!/ Daily!/ Daily!/ Daily!/ Dailyl/ Daily!/ Daily!/ Monthly* Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Semiannual ly * The frequency shall be increased to weekly if at any time the concentration exceeds 1.5 tu. Note: MGD = million gallons per day NTU = Nephelometric Turbidity Units tu = toxicity units pCi/1 = Picocuries per liter A list of all footnotes referenced will be found following the last page of the Monitoring and Reporting Program Section. MGD = million gallons per day mg/1 = milligrams per liter ml/1 = milliliters per liter o Monitoring and Reporting Program No. 79-46 -2- INFLUENT MONITORING Constituent 5-Day 20° BOD Suspended solids - Total Suspended solids - Volatile Unit mg/1 mg/1 mg/1 Type of sample 24-hr, composite 24-hr, composite 24-hr, composite Minimum frequency of analysis Monthly Monthly Monthly The discharge shall submit a monthly report containing the following information: 1. The number of equivalent unit connections to the sewerage system at the beginning of the month. 2. The number of new equivalent unit connections added to the sewerage system during the month. 3. The number of equivalent unit connections which have been authorized but not yet connected. 4. The anticipated increase in influent flow volume resulting from connecting the units described in Item 3. RECEIVING WATER AND SEDIMENT MONITORING Receiving water and sediment monitoring in the vicinity of the outfall shall be conducted as specified below. Station location, sampling, sample preservation and analyses, when not specified, shal^. be by methods approved by the Executive Officer. The monitoring program may be modified by the Executive Officer at any time. Receiving water and sediment monitoring stations shall be located and numbered as follows: Station Description A-l through A-4 A-5 B-l and B-2 S-l At the corners of a 2,000' x 1,000' x rectangle having its long axis parallel to shore and the intersection of its diagonals at the seaward end of the outfall. At the intersection of diagonals of above rectangle. Approximately two miles downcoast and two miles upcoast, respectively, from the outfall and over the same depth contour as Station A-5. Surf 6,500 feet south of outfall (lifeguard tower). o Monitoring and Reporting -3- Program No. 79-46 Station Description S-2 Surf 2,500 feet south of outfall (old park entrance) S-3 Surf at outfall S-4 Surf 3,000 feet north of outfall (Carlsbad Boulevard overpass) S-5 Surf 5,500 feet north of outfall (Cerezo Drive) N-l Opposite S-l, 3,000 feet seaward, MLLW N-2 Opposite S-2, 3,000 feet seaward, MLLW N-2a Opposite S-2, 1,300 feet seaward, MLLW N-3 Opposite S-3, 1,300 feet seaward, MLLW N-4 Opposite S-4, 1,300 feet seaward, MLLW T-0 Biological transect located 50 feet downcoast of and parallel to the outfall. Stations shall be established over the 20, 40, 60 and 80 foot depth contours T-l Biological transect located two miles downcoast and parallel to the outfall. Stations shall be established over the 20, 40, 60 and 80 foot depth contours along the transect T-2 Biological transect located two miles upcoast and parallel to the outfall. Stations shall be established over the 20, 40, 60 and 80 foot depth contours along the transect If the Executive Officer determines that the effluent at all times complies with Effluent Limitations A.l(a) and A.l(b), only the reduced receiving water monitoring program below is required: Determination Unit Visual observations — Total coliforms MPN/100 ml Station All S stations All A, B, and N stations All S stations All A, B, and N stations Type of sample Grab Minimum frequency ** Monthly ** Monthly If the Executive Officer determines that the effluent does not at all times comply with Effluent Limitations A.I and A.3, intensive receiving water and sediment monitoring is required. In that event, analyses of receiving water samples shall be conducted as follows: ** Once per week, May 1 through October 31; biweekly, November 1 through April 30. Note: All station depths are referenced from Mean Lower Low Water (MLLW). Monitoring and Reporting Program No. 79-46 o -4- Determination Unit Visual observations — Total coliforms MPN/100 ml Temperature F Dissolved oxygen mg/1 2Grease and oil mg/m Light transmittance %/m Kelp pH Station A-l through A- 5 B-l and B-2 N-l through N-4 S-l through S-5 A-l through A-5^*** B-l and B-22/*** N-l through N-4Z'*** S-l through S-5 A-l through A-5l/ B-l and B-2i/ A-l through A-5^ B-l and B-2l/ A-l through A-5-i' B-l and B-22/ A-l through A-5-^.' B-l and B-2^/ W All A stations-^' Type of sample__ — — —Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Instrument Instrument ~ Grab Minimum frequency Monthly Monthly Monthly ** Monthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Quarterly Annually ** Once per week, May 1 through October 31; biweekly, November 1 through April 30. *** If the discharger demonstrates to the satisfaction of the Executive Officer, by means of daily analyses, that the concentrations of total coliform bacteria in the effluent are consistently less than 1,000 per 100 milliliters, this monitoring may be suspended. The discharger shall conduct the monitoring as scheduled unless authorized to suspend it, in writing, by the Executive Officer. If this monitoring is suspended, the discharger shall resume it at the request of the Executive Officer. Note: MPN/100 ml = Most Probable Number per 100 milliliters F = Degrees Fahrenheit 7o/m = percent per meter mg/m = milligrams per square meter Monitoring and Reporting*^ Program No. 79-46 -5- The intensive program for analyses of sediment samples shall be conducted as follows: Determination Benthic biota Sulf ides Total chlorinated hydrocarbons Biochemical oxygen demand Chemical oxygen demand Particle size distribution Metals Arsenic Cadmium Total chromium Copper Lead Mercury Nickel Silver Zinc Cyanide Phenolic compounds Unit Identification and enumeration^:/ mg/kg mg/kg mg/kg mg/kg • _ mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg Station A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 A-l through A-5 B-l and B-2 Type of sample 3 Grabs 3 Grabs Core!!/1 f\ t Core!!/ Core"/ Core!!/ Core!?./TO/ Core!!/ Core!!/1 r\ / Core!!/ Core!!/ Corel!/ Corel!/ Core Core!!/TO/ Core!!/ Corel!/v •*- Core!!/ Core!!/ Core!!/ Core!!/1 O / Corel!/ Corel2./ CoreEL/ Core!|/ Corel!/ Corel!/ Corel!/ Coreif/ Corel^ Coreif/ Corel^ Core^/ C°re12 Minimum frequency Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Semiannually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annual ly Annually Annually Annually Annually Annually Annually Annually Annually Annually Note: mg/kg = milligrams per kilogram dry weight Monitoring and Reporting Program No. 79-46 -6- Determination Radioactivity Biological transects Unit pCi/ml Identification and enumeration A-l B-l T-0, Station through A-5 and B-2 T-l and T-2 Type of sample Core*' Corel?-/ 127 Minimum frequency Annually Annually Annually Monitoring reports shall be submitted to the Regional Board according to the dates in the following schedule: Monitoring frequency Continuous, daily, weekly, or monthly Quarterly Semiannually Annually Report due By the 30th day of the following month January 30, April 30, July 30, October 30 April 30, October 30 January 30 Ordered by Leonard Burtman Executive Officer September 24, 1979 DB:hmd