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Home My WebLink About10 RESPONSE TO OC SANITATION DIST 04-17-07 Agenda Item 10 ,~- '~ \ ~ ~, . ~ Reviewed: , .: ~ aj ~ _ City Manager ~- ~ ¢~~ ~~r: .~ Finance Director NlA MEETING DATE: APRIL 17, 2007 T0: WILLIAM A. HUSTON, CITY MANAGER FROM: COMMUNITY DEVELOPMENT DEPARTMENT SUBJECT: CITY OF TUSTIN RESPONSE TO ORANGE COUNTY SANITATION DISTRICT PEIR FOR PROPOSED IMPROVEMENTS. SUMMARY City Council authorization is requested for the City of Tustin's response to the subject Program Environmental Impact Report (PEIR) for proposed improvements to the Sanitation District's wastewater collection system. The proposed actions constitute the Collection System Improvement Plan. One of the proposed improvement projects is the Browning Subtrunk Sewer Relief project ("Project"), which would increase the capacity of 7,800 feet of sewer line beneath Browning Avenue between Rainbow Drive and ~ Mitchell Avenue. A portion of the sewer line is located in the City of Tustin (Location Map -Attachment A). RECOMMENDATION: That the City Council authorize staff to forward the attached response letter to the Orange County Sanitation District. FISCAL IMPACT: There are no fiscal impacts associated with this action. BACKGROUNDAND DISCUSSION: The Collection System Improvement Plan proposes improvements to the Sanitation Districts wastewater collection system. The project no longer includes the service area annexations that were originally proposed in the Notice of Preparation (NOP) issued on October 2, 2006. One of the proposed improvement projects is the Browning Subtrunk Sewer Relief project, which would increase the capacity of 7,800 feet of sewer line beneath Browning Avenue between Rainbow Drive and Mitchell Avenue. A portion of the sewer line is located in the City of Tustin. City Council Report OCSD PEIR April 17, 2007 Page 2 The Community Development and Public Works Departments have reviewed the subject Draft Program Environmental Impact Report. Staff believes that it is in the City's interest to be on record regarding this matter and has prepared correspondence expressing the City's concerns regarding the DPEIR document (see Attachment B}. Staff requests that the Tustin City Council review and consider these comments and, if acceptable, authorize their formal transmission to the Orange County Sanitation District. J Scott Reekstin Elizabeth A. Binsack Senior Planner Community Development Director Attachments: A. Location Map B. Draft Comment Response Letter S:1CdctlCCReportslDPEIR OCSD Improvements.doc ATTACHMENT A Location Map ^ -~ a c ~~ y . ;, '~ : ~ ~x 4 w ~ .. .. /~ `h ~ ~~~ l! F il, W ~ ~ ~ ~ ~ ~, ' ~I 4 _ Rot , ~C ~ ~ W E ~~ N. '~ M , N ? 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The proposed plan is located within the Orange County Sanitation District (OCSD} service area and would occur over the next ten (10) years. In recent months, City of Tustin staff has met with OCSD staff to discuss the OCSD sewer collection system. Through these meetings it has become apparent that the Plan is experiencing a high level of inflow and infiltration, which could be affecting the capacity of the sewer. Therefore, the City of Tustin recommends that the OCSD, prior to design and construction implementation activities for the Plan, consider the following: 1. Conduct further investigation and studies to reduce inflow and infiltration for the area to determine if this will eliminate the need for the Plan; 2. If the Plan is needed, the OCSD should reconfirm the hydraulic modeling assumptions and readjust the model, as necessary, prior to design; and 3. Meet with City of Tustin staff at the development stages of the Plan to ensure that all the reasonable range of options are explored with the Plan design. A letter discussing the City of Tustin's review of the Notice of Preparation for the subject DPEIR was sent to the OCSD on October 18, 2006 in which concerns were expressed over the construction of the Browning Subtrunk Sewer Relief Project. Most of these concerns will be addressed through the process outlined above. It must be emphasized, however, that if the project is implemented, adjacent property owners and schools must be notified and the potential impacts of their daily operations must be identified. A precise construction schedule must be provided to the City of Tustin and all interested parties when available. Thank you again for the opportunity to provide comments on the NOA of DPEIR for the Collection System Improvement Plan. The City of Tustin ,would appreciate receiving all additional environmental documents with the responses to our comments when they become available. Mr. John Linder NOA For DPEIR For Collection System Improvement Plan April 18, 2007 Page 2 If you have any questions regarding the City's comments, please call me at (714) 573-3016 or Dana R. Kasdan, Engineering Services Manager at (714} 573-3171. Sincerely, Scott Reekstin Senior Planner cc: Elizabeth A. Binsack, Community Development Director Dana Kasdan, Engineering Services Manager Douglas Holland, City Attorney