Full Text
Appendices SEIR No. 339 City of Anaheim Appendix H Sewer Study Technical Memorandum ---PAGE BREAK--- Appendices The Planning Center August 2010 This page intentionally left blank. ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 1 T E C H N I C A L M E M O R A N D U M Combined Central Anaheim Area Master Plan of Sanitary Sewers (CCAAMPSS) – Analysis of Models for the Revised Platinum Triangle Expansion Project (DSEIR No. 339) PREPARED FOR: Khanh Chu/City of Anaheim Susan Kim/City of Anaheim PREPARED BY: CH2M HILL DATE: June 2009 Introduction CH2M HILL has been retained by the City of Anaheim to analyze the build-out condition modeling of the Combined Central Anaheim Area Master Plan of Sanitary Sewers (CCAAMPSS1) for the Revised Platinum Triangle Expansion Project – Draft Subsequent Environmental Impact Report No. 339 (the “Proposed Project”). The Proposed Project will increase the permitted amount of development in The Platinum Triangle Mixed-Use (PTMU) Overlay Zone as follows: Land Use Adopted Proposed Increase Residential Units 10,266 18,909 8,643 Commercial Square Feet 2,264,400 4,909,682 2,645,282 Office Square Feet 5,055,550 14,340,522 9,284,972 Institutional Square Feet 0 1,500,000 1,500,000 This technical memorandum summarizes the results of the modeling and outlines the sewer improvements that are recommended to accommodate the Proposed Project. Analysis Attachment 1 details the breakdown and distribution of the development intensities associated with the Proposed Project. Properties within the Platinum Triangle are currently designated for four types of land use by the General Plan: industrial, institutional, office and mixed-use. The PTMU Overlay Zone implements the mixed-use land use designation. The PTMU Overlay Zone divides the properties designated for mixed use into the following mixed use districts: Arena, Gateway, Gene Autry, Katella, Orangewood and Stadium. The Proposed Project creates new ARTIC and Office districts and expands the boundaries for the Orangewood and Katella Districts. The development intensities proposed for the mixed-use districts are further divided into sub areas by the Proposed Project. 1 The CCAAMPSS evaluates the sewer system within the Central City of Anaheim generally located east of Euclid Street and west of the Santa Ana River. The CCAAMPSS identifies sewer system improvements for the existing and build-out land-use conditions. The CCAAMPSS was completed in September 2006. An addendum to the CCAAMPSS was completed in May 2007 to update the analysis of alternative sewer alignments and the total cost of build-out condition sewer improvements. ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 2 The current General Plan (Tables LU-3 and LU-4) allows the following maximum development intensities within the Platinum Triangle: Land Use Maximum Development Intensity Industrial • 0.5 floor area ratio (FAR) Institutional • 3.0 FAR Office • Office Development: 1,790,550 square feet • Office-High – No maximum FAR • Office-Low – 0.5 FAR • Commercial Development: 10,000 square feet, no maximum FAR Mixed-Use • Residential: 10,266 dwelling units at densities up to 100 dwelling units per acre • Office Development: 3,265,000 square feet, no maximum FAR • Commercial Development: 2,254,400 square feet, 0.4 FAR The Proposed Project does not include any changes in development intensity for the properties designated by the General Plan for industrial land uses. However, properties designated for institutional land uses, located east of Douglass Road and south of Katella Avenue, are proposed to be designated for mixed-use and comprise the newARTIC district. The remaining property designated for institutional uses, located on Katella Avenue, west of Lewis Street, will not change its land use designation. The properties within the Platinum Triangle that are currently designated for office uses are proposed to comprise the new Office district and the expanded Katella and Orangewood districts. The properties within the new Office district will remain designated by the General Plan for office uses; the properties within the Katella and Orangewood districts will be designated for mixed use by the General Plan. The Platinum Triangle Sewer Study, Addendum to the First Revision, June 2006, analyzed the development intensities currently permitted by the General Plan. Although the General Plan sets maximum total development thresholds for The Platinum Triangle, the June 2006 sewer study analyzed the sewer improvements required to allow any property within the Platinum Triangle to develop to its full potential based on maximum FAR and/or maximum dwelling units per acre. For instance, although the total amount of office development permitted on properties designated for office uses is 1,790,550 square feet, the sewer study generally analyzed each property at a maximum FAR of 2.0. This modeling allowed for the maximum flexibility for development. As a result the total amount of square feet of office development modeled by the June 2006 study for properties designated for office uses exceeds the square footage development threshold set by the General Plan. For properties with approved or pending development agreements, the maximum development intensity modeled by the June 2006 study reflected the proposed project. Overall, the development intensities modeled by the June 2006 study exceed the amount currently permitted by the General Plan. The development intensities analyzed by the June 2006 sewer study were incorporated into the CCAAMPSS, which was adopted in December 2006 by the City Resolution No. 2006-255. Sewer improvements that were ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 3 recommended to accommodate the development intensities analyzed by the June 2006 sewer study are detailed in Attachment 2. The Proposed Project further breaks down the amount of development permitted into sub areas and removes the need to generalize the permitted development intensities for modeling purposes, which means the amount of development intensity modeled accurately reflects the total amount proposed to be permitted by the General Plan. As a result, some proposed development intensities show a decrease compared to the June 2006 study, even though the Proposed Project increases the total amount of permitted development intensities allowed in the Platinum Triangle. Using the data in Attachment 1, the twelve CCAAMPS build-out condition models that are located within the Platinum Triangle (Models 15, 28B, 47, 115, 116, 117, 118, 119, 120, 121, 122 and 123) were analyzed following the sanitary flow modeling methodology2 of the CCAAMPSS. Model 8 used in the June 2006 study was revised in the CCAAMPSS as Models 15, 28B, and 47 due to changes in tributary areas. All of the parcels were grouped within the corresponding model and analyzed collectively in the model. The appropriate model numbers of the CCAAMPSS were associated to the old “Model 8” shown in Attachment 1. The old “Model 8” was a model boundary used in the June 2006 sewer study. “Model 8” was revised in the CCAAMPSS as Models 15, 28B, and 47 due to changes in tributary areas. The proposed Amendment to the Anaheim Resort Specific Plan (DSEIR No. 340) was incorporated into Model 15 to obtain the cumulative impact to Model 15 from the proposed development intensities for the Platinum Triangle and the Anaheim Resort Specific Plan (ARSP). As discussed with the City, two versions each of Models 121, 122, and 123 were reanalyzed that concentrated flows at the most upstream manhole of the basin to account for the worst-case development scenario and to ensure sewer pipe sizes are large enough for the total sewer flow from the Proposed Project. The two locations of the most upstream manholes in Model 121 are found in the northerly portion of the basin at Manhole No. 119-2-04, and in the southerly portion of the basin at Manhole No. 119-2-11. The two locations of the most upstream manholes in Model 122 are found in the northerly portion of the basin at Manhole No. P118-2-09, and in the southerly portion of the basin at Manhole No. P118-3-14. The two locations of the most upstream manholes in Model 123 are found in the westerly portion of the basin at Manhole No. P118-4-07, and in the easterly portion of the basin at Manhole No. P128-3-05. Models 122 and 123 contain private sewers, and no City sewers. In Model 122, there are sewer improvements as a result of the Proposed Project. In Model 123, the sewer improvements recommended from the June 2006 sewer study remain the same as a result of the Proposed Project. 2 The sanitary flow modeling methodology of the CCAAMPSS is based on using diurnal curves, rather than using the traditional peaking factor method. Overall, the diurnal curve method better represent the pattern of sanitary wastewater flows generated by a type of land use over a 24-hour period. Additional details can found in the CCAAMPSS. ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 4 Results Attachment 3 details the sewer improvements that are recommended to accommodate build-out of the Proposed Project’s maximum development intensities. 7,373 linear feet of sewer pipe are recommended to be upsized to accommodate the Proposed Project in Models 15, 28B, 47, 119, 120, 121, and 122. There are no improvements proposed for Models 115, 116, 117, 118, and 123. Details of the recommended sewer improvements are summarized in the following sections. A map of the recommended sewer improvements is included as Attachment 4. Also shown in Attachment 4 are three stretches of new sewer that have been built in the Platinum Triangle since the June 2006 sewer study. One stretch is approximately 1,000 feet of new sewer along Katella Avenue just east of State College Boulevard within Model 117. The second stretch is a reverse sewer (flowing easterly instead of westerly), approximately 2,000 feet, along Katella Avenue in Model 28B between Lewis Street and State College Boulevard. The third stretch is approximately 3,000 feet of new sewer along Gene Autry Way and Santa Cruz Street just west of State College Boulevard in Model 47. All three stretches of new sewer are indicated in Attachment 4 as “Backbone Sewer,” which represents additional sewers to the City’s existing sewer system to accommodate build-out of the Proposed Project. Model 15 1,064 linear feet of sewer pipe is recommended for replacement in Model 15, along Howell Avenue, within the Office District, to accommodate build-out of the Proposed Project. The existing sewers are 8-inch in diameter and are recommended for replacement with 10-inch diameter sewers. 8,095 linear feet of sewer pipe are recommended for replacement in Model 15 to accommodate build-out or the proposed Amendment to the Anaheim Resort Specific Plan. The existing sewers range from 8-inch to 24-inch in diameter and are recommended for replacement with 10- inch to 30-inch diameter sewers. The Proposed Project does not create cumulative impacts to these 8,095 linear feet of sewer pipe located west of the I-5 freeway. Model 28B 1,035 linear feet of sewer pipe is recommended for replacement in Model 28B along Wright Circle and Rigney Way, within Sub Area B of the Katella District, to accommodate build-out of the Proposed Project. The existing sewers are 8-inch in diameter and are recommended for replacement with 10-inch diameter sewers. Model 47 554 linear feet of sewer pipe is recommended for replacement in Model 47 along Gene Autry Way to accommodate build-out of the Proposed Project. These improvements are located within the Gene Autry District. The existing sewers are 8-inch in diameter and are recommended for replacement with 15-inch diameter sewers. Model 119 876 linear feet of sewer pipe is recommended for replacement in Model 119, along Douglass Road, within Sub Area D of the Katella District, to accommodate build-out of the Proposed ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 5 Project. The existing sewers are 8-inch in diameter and are recommended for replacement with 10-inch and 15-inch diameter sewers. Model 120 2,717 linear feet of sewer pipe are recommended for replacement in Model 120, along State College Boulevard, Dupont Drive and Orangewood Avenue, within the Gateway and Orangewood Districts, to accommodate build-out of the Proposed Project. The existing sewers are 8-inch to 12-inch in diameter and are recommended for replacement with 10-inch to 15-inch diameter sewers. Model 121 927 linear feet of sewer are recommended for replacement in Model 121, along Rampart Street and a City easement, within the Orangewood District, to accommodate build-out of the Proposed Project. The existing sewers are 8-inch in diameter and are recommended for replacement with 10-inch and 12-inch diameter sewers. Model 122 200 linear feet of private sewer pipe is recommended for replacement in Model 122 from Manhole No. 118-1-08 to Manhole No. 118-1-06 within the Stadium District to accommodate build-out of the Proposed Project. The existing sewers are 15-inch in diameter and are recommended for replacement with 21-inch diameter sewers. OCSD Trunk Sewer Modeling and Potential Spills In June 2007, coordination was done with OCSD regarding their recent modeling results for trunk sewers along State College Boulevard, Howell Avenue, and Orangewood Avenue. OCSD provided modeling information of potential surcharging within these trunk sewers during wet- weather events. Wet weather events were assumed by OCSD to be a representative ten-year storm. To determine the potential of any spills within the City sewers in the Platinum Triangle due to surcharging found in the OCSD’s modeling of their trunk sewers during a ten-year storm event, the assumptions listed below were made in the Hydra analysis for Models 28B, 47, 115, 116, 117, 118, 119, 120, 121, 122, and 123: • Recommended sewer improvements for the Platinum Triangle area are constructed, • Recommended sewer improvements are constructed at same inverts of existing sewers, and • Flows within the OCSD trunk sewers based on the modeling results figures provided by OCSD. The peak flows from the Hydra analysis of the proposed development intensities for the Proposed Project are generally lower than the previous peak flows analyzed by the June 2006 study, which were incorporated in the CCAAMPSS. This is a result of the reduced flows generated from the Proposed Project. ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC 6 The table below summarizes the results of the surcharge levels within the City’s sewers due to OCSD’s surcharging flow within the trunk sewers during a representative ten-year storm event. Using the assumptions described above, the City sewers experienced surcharge above the pipe crown, but no potential for spills as the hydraulic grade line is below the ground surface during a ten-year storm event. Results of Surcharge within the City sewers in the Platinum Triangle during a representative Ten-Year Storm Event Model Depth of Sewer below Ground Elevation (ft) Surcharge Above Pipe Crown (ft) 28B 7 – 15 2 47 14 2 115 7 – 9 1 – 2 116 6 1 – 2 117 7 - 8 2 118 7 – 11 2 119 9 – 12 2 – 3 120 6 – 7 2 – 4 121 16 0 122 5 2 – 4 123 14 1 Where possible, sewer improvements should be constructed with larger than recommended diameters to maintain the surcharge levels within the pipe and the invert elevation of sewer laterals should be located above the hydraulic grade line elevation of the surcharge levels when they are above the pipe crown. In addition, backflow prevention devices should be installed at the lateral connections to prevent surcharge flow from entering private properties. At the project level, it is recommended that additional analysis be performed for each individual project using flow, wet-weather data, and other information specific for that project in order to obtain more accurate results of the surcharge levels for final design. Conclusion The latest proposed development intensities for the Platinum Triangle have resulted in additional build-out sewer improvements and/or increased pipe diameters for Models 15, 28B, 47, 117, 119, 120, and 122 in the CCAAMPSS. A total of 7,373 linear feet of sewer pipe are recommended for replacement to accommodate full build-out of the Proposed Project. Details of the recommended sewer improvements are outlined in Attachment 3. The map of recommended build-out sewer improvements is provided in Attachment 4. Following a sewer study is typically the design level. At this level, the recommended sewer improvements described herein can be prioritized and implemented for construction. ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC Attachment 1 Proposed Development Intensities for the Platinum Triangle ---PAGE BREAK--- Comparison of Development analyzed by The Platinum Triangle Sewer Study, Addendum to the First Revision, June 2006, Phase 1 and proposed for The Revised Platinum Triangle Expansion Project (DSEIR No. 339) Proposed Project is a decrease in development compared to 2006 Study Proposed Project is an increase in development compared to 2006 Study Sewer Parcels have both an increase in one or more land uses and a decrease in one or more land uses Sewer Basin Sewer Parcel 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference Industrial 25C1 (Model 8) P01 Model 15 135,036 135,036 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 25C1 (Model 8) P02 Model 15 150,500 150,500 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 27 (Model 8) P21 Model 15 277,259 277,259 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 111 (Model 111) P43 Model 111 428,195 428,195 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 111 (Model 111) P44 Model 111 165,310 165,310 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 114 (Model 111) P45 Model 111 211,484 211,484 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 114 (Model 111) P46 Model 111 77,755 77,755 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 114 (Model 111) P47 Model 111 266,152 266,152 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 116 (Model 116) P53 Model 116 259,835 259,835 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 116 (Model 116) P54 Model 116 199,723 199,723 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 116 (Model 116) P56 Model 116 47,045 47,045 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 117 (Model 117) P59 Model 117 409,246 409,246 0 0 0 0 0 0 0 0 0 0 0 0 Industrial 117 (Model 117) P60 Model 117 60,548 60,548 0 0 0 0 0 0 0 0 0 0 0 0 Institutional 25C1 (Model 8) P03 Model 15 0 0 0 380,279 380,279 0 0 0 0 0 0 0 0 0 Office (w/o St College) 25C1 (Model 8) P04 Model 15 0 0 0 0 0 0 114,998 0 0 0 0 0 0 Office (w/o St College) 25C1 (Model 8) P05 Model 15 0 0 0 0 0 0 159,430 0 0 0 0 0 0 Office (w/o St College) 27 (Model 8) P22 Model 15 0 0 0 0 0 0 394,654 0 0 0 0 0 0 Office (w/o St College) 25C1 (Model 8) P06 Model 15 0 0 0 0 0 0 236,966 236,966 0 0 0 0 0 0 0 Office (w/o St College) 25C1 (Model 8) P07 Model 15 0 0 0 0 0 0 17,424 0 0 0 0 0 0 Office (w/o St College) 28A (Model 8) P31 Model 15 0 0 0 0 0 0 338,897 0 0 0 0 0 0 Office (w/o St College) 25C2 (Model 8) P17 Model 47 0 0 0 0 0 0 209,088 0 0 0 0 0 0 Office (w/o St College) 38B1 (Model 47) P37 Model 47 0 0 0 0 0 0 194,278 0 0 0 0 0 0 Office (w/o St College) 38B1 (Model 47) P38 Model 47 0 0 0 0 0 0 54,232 0 0 0 0 0 0 Office (w/o St College) 38B1 (Model 47) P40 Model 47 0 0 0 0 0 0 383,328 0 0 0 0 0 0 Office (w/o St College) 38B1 (Model 47) P39 Model 47 0 0 0 0 0 0 64,904 64,904 0 0 0 0 0 0 0 Office (w/o St College) 27 (Model 8) P23 Model 15 0 0 0 0 0 0 354,143 0 0 0 0 0 0 Office (w/o St College) 27 (Model 8) P24 Model 15 0 0 0 0 0 0 429,066 0 0 0 0 0 0 Office (e/o St College) 115 (Model 115) P48 Model 115 0 0 0 0 0 0 506,821 383,250 -123,571 0 0 0 0 0 0 Office (e/o St College) 116 (Model 115) P51 Model 115 0 0 0 0 0 0 155,727 58,700 -97,027 0 0 0 0 0 0 Office (e/o St College) 116 (Model 116) P55 Model 116 0 0 0 0 0 0 267,458 267,458 0 0 0 0 0 0 0 Office (e/o St College) 117 (Model 116) P57 Model 116 0 0 0 0 0 0 67,954 0 0 0 0 0 0 Office (e/o St College) 118 (Model 116) P58 Model 116 0 0 0 0 0 0 798,890 0 0 0 0 0 0 Office (e/o St College) 117 (Model 117) P61 Model 117 0 0 0 0 0 0 148,540 0 0 0 0 0 0 Arena 115 (Model 115) P49 Model 115 0 0 0 0 0 0 100,000 100,000 425 Arena 115 (Model 115) P50 Model 115 0 0 0 0 0 0 100,000 100,000 425 Arena 115 (Model 115) P52 Model 115 0 0 0 100,000 100,000 425 ARTIC 118 (Model 119) P68 Model 119 0 0 0 1,772,021 0 0 0 ARTIC 119 (Model 119) P69 Model 119 0 0 0 318,859 0 0 0 Gateway (Sub-Area A) 38B1 (Model 47) P41A Model 47 0 0 0 0 0 0 445,183 1,330 0 Gateway (Sub-Area A) 38B2 (Model 47) P41B Model 47 0 0 0 0 0 0 84,817 0 0 Gateway (Sub-Area A) 38B2 (Model 47) P42 Model 47 0 0 0 0 0 0 311,890 1,330 0 Proposed Mixed Use District or General Plan Land Use Industrial (sq. ft) Institutional (sq. ft.) Office (sq. ft.) 0 0 716,127 -124,799 845,935 62,726 879,613 Commercial (sq. ft.) Residential (units) 358,000 669,082 356,321 358,000 520 520 -850 -135,771 438 538,250 -303,640 52,000 49,340 June 2006 425 100,000 1,500,000 -590,880 2,202,803 2,202,803 CCAAMPSS 438 -200,000 100,000 -200,000 1 02/03/2009 ---PAGE BREAK--- Comparison of Development analyzed by The Platinum Triangle Sewer Study, Addendum to the First Revision, June 2006, Phase 1 and proposed for The Revised Platinum Triangle Expansion Project (DSEIR No. 339) Proposed Project is a decrease in development compared to 2006 Study Proposed Project is an increase in development compared to 2006 Study Sewer Parcels have both an increase in one or more land uses and a decrease in one or more land uses Sewer Basin Sewer Parcel 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference Proposed Mixed Use District or General Plan Land Use Industrial (sq. ft) Institutional (sq. ft.) Office (sq. ft.) Commercial (sq. ft.) Residential (units) June 2006 CCAAMPSS Gateway (Sub-Area A) 38B2 (Model 47) AD6 Model 47 0 0 0 0 0 0 0 0 0 0 0 0 266 250 -16 Gateway (Sub-Area B) 120 (Model 120) P72A Model 120 0 0 0 0 0 0 0 24,000 24,000 0 12,000 12,000 0 0 0 Gateway (Sub-Area B) 120 (Model 120) P72B Model 120 0 0 0 0 0 0 530,000 0 -530,000 1,330 0 -1,330 0 690 690 Gateway (Sub-Area B) 120 (Model 120) AD2 Model 120 0 0 0 0 0 0 0 0 0 0 0 0 352 352 0 Gateway (Sub-Area C) 120 (Model 120) PF11 Model 120 0 0 0 0 0 0 0 0 0 48,670 0 -48,670 1,132 878 -254 Gateway (Sub-Area C) 120 (Model 120) PF13 Model 120 0 0 0 0 0 0 0 0 0 0 0 0 325 341 16 Gene Autry (Sub-Area A) 25C2 (Model 8) AD9B (EAST) Model 47 0 0 0 0 0 0 0 0 0 103,800 103,800 0 491 491 0 Gene Autry (Sub-Area B) 25C2 (Model 8) PF12 Model 47 0 0 0 0 0 0 0 219,000 219,000 31,500 118,000 86,500 509 1,208 699 Gene Autry (Sub-Area C) 25C2 (Model 8) P16A Model 47 0 0 0 0 0 0 100,000 38,800 0 Gene Autry (Sub-Area C) 25C2 (Model 8) P16B Model 47 0 0 0 0 0 0 0 0 0 Katella (Sub-Area A) 28A (Model 8) P27A Model 15 0 0 0 0 0 0 444,312 0 0 Katella (Sub-Area A) 28B (Model 8) P27B Model 28B 0 0 0 0 0 0 320,602 0 0 Katella (Sub-Area A) 28B (Model 8) P27C Model 28B 0 0 0 0 0 0 363,290 0 -363,290 0 60,000 60,000 0 350 350 Katella (Sub-Area A) 28B (Model 8) P33B Model 28B 0 0 0 0 0 0 396,396 91,000 -305,396 0 45,500 45,500 0 364 364 Katella (Sub-Area A) 28A (Model 8) P33A Model 15 0 0 0 0 0 0 373,745 254,759 0 0 0 0 0 0 Katella (Sub-Area A) 28A (Model 8) P32 Model 15 0 0 0 0 0 0 22,651 0 0 0 0 0 0 Katella (Sub-Area A) 25C1 (Model 8) P08 Model 15 0 0 0 0 0 0 118,483 0 0 0 0 0 0 Katella (Sub-Area A) 25C2 (Model 8) P09 Model 47 0 0 0 0 0 0 157,687 0 0 0 0 0 0 Katella (Sub-Area A) 25C2 (Model 8) P12 Model 47 0 0 0 0 0 0 242,194 0 0 0 0 0 0 Katella (Sub-Area B) 28B (Model 8) AD1 Model 28B 0 0 0 0 0 0 0 0 0 10,659 10,659 0 390 390 0 Katella (Sub-Area B) 28B (Model 8) AD4 Model 28B 0 0 0 0 0 0 0 0 0 0 0 0 771 859 88 Katella (Sub-Area B) 28B (Model 8) AD7 Model 28B 0 0 0 0 0 0 0 0 0 1,248 1,298 50 336 336 0 Katella (Sub-Area B) 28B (Model 8) AD9A Model 28B 0 0 0 0 0 0 0 0 0 126,000 1,741 Katella (Sub-Area B) 25C2 (Model 8) AD9B (WEST) Model 47 0 0 0 0 0 0 0 0 0 0 449 Katella (Sub-Area B) 28B (Model 8) P26 Model 28B 0 0 0 0 0 0 354,578 70,916 0 Katella (Sub-Area B) 28B (Model 8) P29A Model 28B 0 0 0 0 0 0 21,780 4,356 0 Katella (Sub-Area B) 28B (Model 8) P29B Model 28B 0 0 0 0 0 0 69,696 13,939 0 Katella (Sub-Area B) 28B (Model 8) PF10 Model 28B 0 0 0 0 0 0 0 0 47 Katella (Sub-Area B) 28B (Model 8) P36 Model 28B 0 0 0 0 0 0 77,537 17,800 -59,737 15,507 8,900 -6,607 0 0 0 Katella (Sub-Area C) 117 (Model 117) P62 Model 117 0 0 0 0 0 0 775,000 105,000 -670,000 202,467 202,467 0 0 0 0 Katella (Sub-Area C) 117 (Model 117) P63 Model 117 0 0 0 0 0 0 0 0 0 11,848 17,708 5,860 0 0 0 Katella (Sub-Area C) 117 (Model 117) AD5 Model 117 0 0 0 0 0 0 0 0 0 0 0 0 265 265 0 Katella (Sub-Area C) 117 (Model 117) AD8 Model 117 0 0 0 0 0 0 0 0 0 9,764 12,600 2,836 251 251 0 Katella (Sub-Area C) 118 (Model 118) AD3 Model 118 0 0 0 0 0 0 0 0 0 14,185 14,185 0 0 0 0 Katella (Sub-Area C) 118 (Model 118) P65 Model 118 0 0 0 0 0 0 775,000 643,482 -131,518 204,035 25,526 -178,509 0 0 0 Katella (Sub-Area D) 119 (Model 119) P66 Model 119 0 0 0 0 0 0 457,380 91,476 0 0 0 Katella (Sub-Area D) 119 (Model 119) P67 Model 119 0 0 0 0 0 0 162,043 32,409 0 0 0 Orangewood 120 (Model 120) P73 Model 120 0 0 0 0 0 0 1,028,016 0 0 Orangewood 120 (Model 120) P74 Model 120 0 0 0 0 0 0 512,266 0 0 Orangewood 121 (Model 121) P75 Model 121 0 0 0 0 0 0 929,570 0 0 Orangewood 121 (Model 121) P77 Model 121 0 0 0 0 0 0 265,716 0 0 209,419 -555,495 119,200 19,200 82,900 44,100 663 663 320 320 260,120 399,881 0 126,000 0 102,400 -343,654 51,200 -38,011 47,197 -572,226 142,000 50,524 1,402,855 -1,332,713 130,000 130,000 1,450 114,571 114,571 2,190 0 382 335 0 1,450 2 02/03/2009 ---PAGE BREAK--- Comparison of Development analyzed by The Platinum Triangle Sewer Study, Addendum to the First Revision, June 2006, Phase 1 and proposed for The Revised Platinum Triangle Expansion Project (DSEIR No. 339) Proposed Project is a decrease in development compared to 2006 Study Proposed Project is an increase in development compared to 2006 Study Sewer Parcels have both an increase in one or more land uses and a decrease in one or more land uses Sewer Basin Sewer Parcel 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference 2006 Proposed Difference Proposed Mixed Use District or General Plan Land Use Industrial (sq. ft) Institutional (sq. ft.) Office (sq. ft.) Commercial (sq. ft.) Residential (units) June 2006 CCAAMPSS Orangewood 121 (Model 121) P76 Model 121 0 0 0 0 0 0 279,655 0 -279,655 1,330 0 -1,330 0 321 321 Stadium 117 (Model 117) P64 Model 117 0 0 0 0 0 0 228,254 45,651 262 Stadium 122 (Model 122) P78 Model 122 0 0 0 0 0 0 633,362 126,672 727 Stadium 122 (Model 122) P79 Model 122 0 0 0 0 0 0 430,373 86,075 494 Stadium 122 (Model 122) P80 Model 122 0 0 0 0 0 0 125,453 25,091 144 Stadium 122 (Model 122) P81 Model 122 0 0 0 0 0 0 1,512,403 302,481 1,736 Stadium 122 (Model 122) P82 Model 122 0 0 0 0 0 0 946,994 189,399 1,087 Stadium 122 (Model 122) P83 Model 122 0 0 0 0 0 0 1,125,590 225,118 1,292 Stadium 122 (Model 122) P84 Model 122 0 0 0 0 0 0 1,341,648 268,330 1,540 Stadium 123 (Model 123) P85 Model 123 0 0 0 0 0 0 589,802 117,960 677 Stadium 123 (Model 123) P86 Model 123 0 0 0 0 0 0 1,100,326 220,065 1,263 Stadium 123 (Model 123) P87 Model 123 0 0 0 0 0 0 1,475,813 295,163 1,694 Stadium 123 (Model 123) P88 Model 123 0 0 0 0 0 0 899,078 179,816 1,032 2,955,000 1,686,183 3,725 -3,557 1,450 -3,216 3,125,000 -3,219,077 0 -4,065,019 165,368 -647,636 3 02/03/2009 ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC Attachment 2 1) Recommended Build-Out Sewer Improvements for the Platinum Triangle (June 2006 Sewer Study) and 2) Map of the Recommended Build-Out Sewer Improvements for the (June 2006 Sewer Study) ---PAGE BREAK--- Combined Central Anaheim Area Master Plan of Sanitary Sewers RECOMMENDED IMPROVEMENT PROGRAMS RECOMMENDED BUILD-OUT SEWER IMPROVEMENTS FOR THE PLATINUM TRIANGLE (JUNE 2006 SEWER STUDY) Model No. Upstream - Manhole Pipe Length (ft) Capacity (d/D)1 Existing Diameter (in) Parallel/ Replace No. of Manholes4 Estimated 2009 Cost5 incl. Eng, Contract, & CM Subtotal Location 115 126307-127102 334 0.53 10 R 12 2 $280,247 DOUGLASS ROAD 127102-127104 360 0.58 10 R 12 1 $292,268 DOUGLASS ROAD 127104-127105 56 0.61 10 R 12 1 $58,098 DOUGLASS ROAD 127105-127108 450 0.73 10 R 12 1 $361,572 DOUGLASS ROAD 127108-127301 500 0.75 10 R 12 1 $400,075 DOUGLASS ROAD 127301-127304 100 0.66 10 R 12 1 $92,057 DOUGLASS ROAD $1,484,317 117 117310-117309 124 0.72 8 R 10 1 $98,682 KATELLA AVE 117311-117310 249 0.72 8 R 10 1 $183,054 KATELLA AVE 117312-117311 64 0.66 8 R 10 2 $66,376 KATELLA AVE 117314-117313 350 1.00 8 R 15 2 $342,401 KATELLA AVE 117313-118103 174 1.00 8 R 15 1 $173,944 KATELLA AVE 118103-117312 54 1.00 8 R 15 1 $64,335 KATELLA AVE $928,791 118 117418-117415 229 0.81 8 R 12 2 $199,315 KATELLA/HOWELL $199,315 119 127308-127306 470 1.00 8 R 10 3 $348,136 DOUGLASS ROAD 127306-127304 406 1.00 8 R 12 2 $335,613 DOUGLASS ROAD $683,749 120 118306-119102 392 1.00 12 R 18 1 $435,401 ORANGEWOOD 118307-118308 158 1.00 12 R 15 1 $158,957 ORANGEWOOD 118308-118306 70 1.00 12 R 15 1 $78,500 ORANGEWOOD 118308-118307 218 0.76 12 R 15 1 $214,142 ORANGEWOOD 118309-118308 137 1.00 10 R 15 1 $140,086 ORANGEWOOD 119106-118309 278 0.78 8 R 12 1 $229,025 DUPONT DR 119107-119106 272 1.00 8 R 12 1 $224,717 DUPONT DR 119108-119107 274 1.00 8 R 10 1 $199,744 DUPONT DR 119209-119108 341 0.72 8 R 10 2 $252,959 DUPONT DR 119205-118404 295 - 8 R 10 2 $222,093 ORANGEWOOD 118404-118310 277 - 8 R 10 1 $202,021 ORANGEWOOD 118310-118309 244 - 10 R 12 1 $202,943 ORANGEWOOD $2,560,589 121 119206-129102 395 1.00 8 R 15 2 $383,470 EASEMENT 119211-119210 255 - 8 R 10 2 $195,094 RAMPART ST 119210-119206 277 - 8 R 10 3 $217,866 RAMPART ST $796,429 47 108111-108117 75 0.89 10 R 12 1 $72,806 GENE AUTRY WAY 108114-108301 145 1.00 10 R 15 1 $147,839 SANTA CRUZ ST 108115-108114 254 1.00 10 R 15 1 $246,864 GENE AUTRY WAY 108116-108115 175 1.00 10 R 15 1 $174,765 GENE AUTRY WAY 108117-108116 226 1.00 10 R 15 1 $221,310 GENE AUTRY WAY 108204-108111 359 1.00 8 R 12 1 $291,498 GENE AUTRY WAY 108205-108204 177 1.00 8 R 12 2 $159,504 GENE AUTRY WAY 108301-108302 358 1.00 8 R 15 1 $341,816 SANTA CRUZ ST 108302-108306 350 1.00 8 R 15 1 $334,507 SANTA CRUZ ST 108306-108307 351 1.00 8 R 15 1 $335,297 SANTA CRUZ ST 108307-108308 46 1.00 8 R 15 1 $57,184 SANTA CRUZ ST 108308-109102 256 1.00 8 R 15 1 $249,000 SANTA CRUZ ST $2,632,390 TOTAL 10,576 $9,285,580 Engineering costs 8% - City of Anaheim's capacity criteria of max d/D are as follows: Construction Mgmt (75% of Eng.) 7% 0.67 = d/D for pipe with diameters less than 12 in d = Depth of flow (in) 0.75 = d/D for pipe with diameters equal or greater than 12 in D = Diameter of the pipe (in) - City of Anaheim's design criteria of max d/D are as follows: 0.50 = d/D for pipe with diameters less than or equal to 12 in 0.60 = d/D for pipe with diameters greater than 12 in Selected Diam2,3 (in) Notes: 1. Capacity as a result of the June 2006 Sewer Study. See below for the City's criteria of max d/D. 2. Selected Diameter is not recommended by sewer modeling, but based on the City's criteria of recommending pipe improvements: Recommend pipe replacement instead of parallel system for existing small diameter 10", and 12") pipes. Either recommend pipe replacement or parallel system for existing 15" diameter pipes, on a case-by-case basis. Generally, recommend parallel system for existing 18" diameter pipes and larger. For pipe diameter 12" and larger, only downsizing by ONE pipe size is allowed. For pipe diameters 8" and 10", no downsizing is allowed. For gaps in the sewer design requirements when there is no sewer need in the sewer section being considered, but there is a sewer need on either or both sides of the sewer section, criteria through applies. Replace all 6" diameter pipes with 8" or larger 3. Selected Diameter is larger than the diameter recommended by the sewer modeling based on the following assumption: Maintain continuity of pipe diameter to match upstream and pipe diameters. Increase pipe diameter to provide better transition between upstream and pipe diameters. 4. Unit cost of manholes is $5,000/manhole. 5. Estimated 2009 Cost based on 3% escalation per year from 2006 to 2009. Build-Out Improvements PT Original Conditions.xls Page 1 of 1 JUNE 2009 ---PAGE BREAK--- 115 114 122 111 28B 123 117 120 116 119 121 118 15 47 INTERSTATE HWY 5 CA-57 FWY LEWIS ST HASTER ST THE CITY DR DOUGLASS RD CHAPMAN AVE KATELLA AVE STATE COLLEGE BLVD HOWELL AVE ORANGEWOOD AVE Exhibit 1 Recommended Build Out Sewer Improvements for the Platinum Triangle (June 2006 Study) LEGEND ! Manhole Sewer Lines Backbone Sewer * Build Out Sewer Improvements 10 Inches 12 Inches 15 Inches 18 Inches OCSD Trunk Sewer Central Sewer Study Area Anaheim City Limits Models Platinum Triangle Combined Central Anaheim Area Master Plan of Sanitary Sewers 1 inch equals 1000 feet 0 500 1,000 Feet ³ Notes: * - Backbone sewers constructed since 2007 along Katella Avenue, Gene Autry Way, and Santa Cruz Street. June 2009 SCO \\GALT\PROJ\CITYOFANAHEIM\360985\MAPFILES\11X17_PLATINUMTRIANGLEORIGINAL_V2.MXD RANHORN 6/10/2009 13:07:50 15 ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC Attachment 3 1) Recommended Build-Out Sewer Improvements for the Revised Platinum Triangle Expansion Project, and 2) Additional Build-Out Sewer Improvements for Model 15 due to Amendment to the Anaheim Resort Specific Plan (DSEIR No. 340) ---PAGE BREAK--- Combined Central Anaheim Area Master Plan of Sanitary Sewers RECOMMENDED IMPROVEMENT PROGRAMS RECOMMENDED BUILD-OUT SEWER IMPROVEMENTS FOR THE REVISED PLATINUM TRIANGLE EXPANSION PROJECT (JUNE 2009) Model No. Upstream - Manhole Pipe Length (ft) Capacity (d/D)1 Existing Diameter (in) Parallel/ Replace No. of Manholes4 Estimated 2009 Cost5 incl. Eng, Contract, & CM Subtotal Location 15 107111-107110 358 0.73 8 R 10 2 $264,617 HOWELL AVE 107110-107109 342 0.74 8 R 10 1 $245,895 HOWELL AVE 107109-107108 364 0.65 8 R 10 1 $260,744 HOWELL AVE $771,255 28B 107402-107401 353 1.00 8 R 10 2 $261,242 WRIGHT CIRCLE 107401-107403 305 1.00 8 R 10 1 $220,920 RIGNEY WAY 107403-107411 230 1.00 8 R 10 1 $170,297 RIGNEY WAY 107411-108214 147 0.48 8 R 10 1 $114,274 RIGNEY WAY $766,733 47 108207-108206 197 1.00 8 R 15 2 $202,766 GENE AUTRY WAY 108206-108205 357 1.00 8 R 15 1 $340,867 GENE AUTRY WAY $543,633 119 127308-127306 470 1.00 8 R 10 3 $348,136 DOUGLASS ROAD 127306-127304 406 1.00 8 R 15 2 $393,509 DOUGLASS ROAD $741,645 120 108403-108404 212 0.76 8 R 10 2 $166,070 STATE COLLEGE BLVD 108404-108405 223 1.00 8 R 10 1 $165,572 STATE COLLEGE BLVD 108405-119101 69 0.69 8 R 10 1 $61,626 STATE COLLEGE BLVD 119209-119108 341 1.00 8 R 12 2 $285,560 DUPONT DR 119108-119107 274 1.00 8 R 12 1 $226,045 DUPONT DR 119107-119106 272 1.00 8 R 12 1 $224,504 DUPONT DR 119106-118309 278 0.65 8 R 12 1 $229,025 DUPONT DR 118309-118308 137 1.00 10 R 15 1 $140,086 ORANGEWOOD 118308-118307 218 0.75 12 R 15 1 $214,009 ORANGEWOOD 118307-118308 158 1.00 12 R 15 1 $159,250 ORANGEWOOD 118308-118306 70 1.00 12 R 15 1 $78,938 ORANGEWOOD 118306-119102 392 1.00 12 R 15 1 $372,809 ORANGEWOOD 119102-119101 73 1.00 12 R 15 0 $73,753 ORANGEWOOD $2,397,247 121 119211-119210 255 0.76 8 R 10 2 $195,094 RAMPART ST 119210-119206 277 0.49 8 R 10 1 $202,021 RAMPART ST 119206-129102 395 1.00 8 R 12 1 $319,220 EASEMENT $716,335 122 118108-118107 190 1.00 15 R 21 2 $250,566 PRIVATE 118107-118106 10 1.00 15 R 21 1 $27,031 PRIVATE $277,596 TOTAL 7,373 $6,214,445 Engineering costs 8% - City of Anaheim's capacity criteria of max d/D are as follows: Construction Mgmt (75% of Eng.) 7% 0.67 = d/D for pipe with diameters less than 12 in d = Depth of flow (in) 0.75 = d/D for pipe with diameters equal or greater than 12 in D = Diameter of the pipe (in) - City of Anaheim's design criteria of max d/D are as follows: 0.50 = d/D for pipe with diameters less than or equal to 12 in 0.60 = d/D for pipe with diameters greater than 12 in Selected Diam2,3 (in) Notes: 1. Capacity as a result of the Proposed Project. See below for the City's criteria of max d/D. 2. Selected Diameter is not recommended by sewer modeling, but based on the City's criteria of recommending pipe improvements: Recommend pipe replacement instead of parallel system for existing small diameter 10", and 12") pipes. Either recommend pipe replacement or parallel system for existing 15" diameter pipes, on a case-by-case basis. Generally, recommend parallel system for existing 18" diameter pipes and larger. For pipe diameter 12" and larger, only downsizing by ONE pipe size is allowed. For pipe diameters 8" and 10", no downsizing is allowed. For gaps in the sewer design requirements when there is no sewer need in the sewer section being considered, but there is a sewer need on either or both sides of the sewer section, criteria through applies. Replace all 6" diameter pipes with 8" or larger 3. Selected Diameter is larger than the diameter recommended by the sewer modeling based on the following assumption: Maintain continuity of pipe diameter to match upstream and pipe diameters. Increase pipe diameter to provide better transition between upstream and pipe diameters. 4. Unit cost of manholes is $5,000/manhole. 5. Estimated 2009 Cost based on 3% escalation per year from 2006 to 2009. Revised BO Plat Triangle Imprv_JUNE2009.xls Page 1 of 1 JUNE 2009 ---PAGE BREAK--- Combined Central Anaheim Area Master Plan of Sanitary Sewers RECOMMENDED IMPROVEMENT PROGRAMS ADDITIONAL BUILD-OUT SEWER IMPROVEMENTS FOR MODEL 15 DUE TO AMENDMENT TO THE ANAHEIM RESORT SPECIFIC PLAN (DSEIR NO. 340) Model No. Upstream - Manhole Pipe Length (ft) Capacity (d/D)1 Existing Diameter (in) Parallel/ Replace No. of Manholes4 Estimated 2009 Cost5 incl. Eng, Contract, & CM Subtotal Location 15 088204-088203 176 0.75 8 R 10 2 $141,771 HASTER ST 088203-088202 174 0.87 8 R 10 1 $132,498 HASTER ST 088202-088201 351 1.00 8 R 10 1 $251,969 HASTER ST 088201-097310 302 1.00 8 R 10 1 $218,896 HASTER ST 097311-097310 312 0.84 21 R 24 1 $433,272 KATELLA AVE 087218-087401 196 0.76 12 R 15 2 $201,853 CLEMENTINE ST 087401-087402 413 0.82 12 R 15 1 $391,975 CLEMENTINE ST 087402-087406 386 0.81 12 R 15 1 $367,334 CLEMENTINE ST 087406-087410 396 0.86 12 R 15 1 $376,460 CLEMENTINE ST 087415-087414 147 0.77 21 R 24 2 $220,020 KATELLA AVE 087414-087413 103 0.83 21 R 24 1 $153,118 KATELLA AVE 087413-087317 329 0.85 21 R 24 1 $456,060 KATELLA AVE 087317-087315 125 0.88 21 R 24 1 $182,608 KATELLA AVE 087315-087318 93 0.83 21 R 24 1 $139,714 KATELLA AVE 087318-087313 115 1.00 21 R 24 1 $169,204 KATELLA AVE 087313-087311 128 0.89 21 R 24 1 $186,630 KATELLA AVE 087311-087309 212 0.91 21 R 24 1 $299,227 KATELLA AVE 087309-087307 319 0.90 21 R 24 1 $442,655 KATELLA AVE 087307-076411 59 0.90 21 R 24 1 $94,139 KATELLA AVE 076411-076424 55 1.00 24 R 30 1 $92,096 KATELLA AVE 088103-077202 125 0.68 8 R 10 2 $107,347 HARBOR BLVD 077202-077201 161 1.00 8 R 10 1 $123,724 HARBOR BLVD 076408-076407 66 0.75 24 R 27 2 $120,856 KATELLA AVE 076407-076405 320 0.68 24 R 27 1 $489,628 KATELLA AVE 076405-076433 56 0.74 24 R 27 1 $98,103 KATELLA AVE 076433-076308 373 0.74 24 R 27 1 $568,230 KATELLA AVE 066417-066422 277 1.00 24 R 27 2 $433,779 KATELLA AVE 066422-066421 329 0.75 24 R 27 1 $502,975 KATELLA AVE 066421-066420 249 0.78 24 R 27 1 $384,332 KATELLA AVE 066420-066419 79 0.72 24 R 27 1 $132,213 KATELLA AVE 066419-066418 339 0.78 24 R 27 1 $517,806 KATELLA AVE 066418-066328 329 0.77 24 R 27 1 $502,975 KATELLA AVE 066328-066327 330 0.78 24 R 27 1 $504,459 KATELLA AVE 066327-066325 331 0.78 24 R 27 1 $505,942 KATELLA AVE 066325-066324 299 0.75 24 R 27 1 $458,484 KATELLA AVE 066324-057444 41 0.75 24 R 27 1 $75,857 KATELLA AVE TOTAL 8,095 $10,478,209 Engineering costs 8% - City of Anaheim's capacity criteria of max d/D are as follows: Construction Mgmt (75% of Eng.) 7% 0.67 = d/D for pipe with diameters less than 12 in d = Depth of flow (in) 0.75 = d/D for pipe with diameters equal or greater than 12 in D = Diameter of the pipe (in) - City of Anaheim's design criteria of max d/D are as follows: 0.50 = d/D for pipe with diameters less than or equal to 12 in 0.60 = d/D for pipe with diameters greater than 12 in Selected Diam2,3 (in) Notes: 1. Capacity as a result of the Proposed Project. See below for the City's criteria of max d/D. 2. Selected Diameter is not recommended by sewer modeling, but based on the City's criteria of recommending pipe improvements: Recommend pipe replacement instead of parallel system for existing small diameter 10", and 12") pipes. Either recommend pipe replacement or parallel system for existing 15" diameter pipes, on a case-by-case basis. Generally, recommend parallel system for existing 18" diameter pipes and larger. For pipe diameter 12" and larger, only downsizing by ONE pipe size is allowed. For pipe diameters 8" and 10", no downsizing is allowed. For gaps in the sewer design requirements when there is no sewer need in the sewer section being considered, but there is a sewer need on either or both sides of the sewer section, criteria through applies. Replace all 6" diameter pipes with 8" or larger 3. Selected Diameter is larger than the diameter recommended by the sewer modeling based on the following assumption: Maintain continuity of pipe diameter to match upstream and pipe diameters. Increase pipe diameter to provide better transition between upstream and pipe diameters. 4. Unit cost of manholes is $5,000/manhole. 5. Estimated 2009 Cost based on 3% escalation per year from 2006 to 2009. Addl BO Imprv for Model 15 due to ARSP and CC Expansion_JUNE2009.xls Page 1 of 1 JUNE 2009 ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC Attachment 4 Map of Recommended Build-Out Sewer Improvements for the Revised Platinum Triangle Expansion Project ---PAGE BREAK--- 115 114 122 111 28B 123 117 120 116 119 121 118 15 47 INTERSTATE HWY 5 CA-57 FWY THE CITY DR CHAPMAN AVE LEWIS ST HASTER ST DOUGLASS RD KATELLA AVE STATE COLLEGE BLVD HOWELL AVE ORANGEWOOD AVE Exhibit 2 Recommended Build Out Sewer Improvements for the Revised Platinum Triangle Expansion Project LEGEND ! Manhole Sewer Lines Backbone Sewer * Build Out Sewer Improvements 10 Inches 12 Inches 15 Inches 21 Inches OCSD Trunk Sewer Central Sewer Study Area Anaheim City Limits Models Platinum Triangle Combined Central Anaheim Area Master Plan of Sanitary Sewers 1 inch equals 1000 feet 0 500 1,000 Feet ³ Notes: * - Backbone sewers constructed since 2007 along Katella Avenue, Gene Autry Way, and Santa Cruz Street. June 2009 SCO \\GALT\PROJ\CITYOFANAHEIM\360985\MAPFILES\11X17_PLATINUMTRIANGLE_V2.MXD RANHORN 6/10/2009 13:07:04 15 ---PAGE BREAK--- FINALTECHMEMO_UPDATEDPLATINUMTRIANGLE_JUNE2009.DOC References 1. Draft Amendment to the Platinum Triangle MLUP SEIR, Project Description, City of Anaheim, 2008. 2. Combined Central Anaheim Area Master Plan of Sanitary Sewers, City of Anaheim, September 2006. 3. Platinum Triangle Sewer Study, Addendum to the First Revision, Merit Civil Engineering, Inc., June 2006. 4. City of Anaheim General Plan, Land Use Element, May 2004.