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Home My WebLink AboutAgenda 3.C 06/21/2004. CITY OF PETALUMA, CALIFORNIA A GENDA BILL Agenda Title Resolution authorizing the developer, O'Brien Meeting Date: June 21, 2004 Group to commence grading activity prior -to final map,approval on the site of Magnolia Place: Subdivision: located on Magnolia Avenue, Samuel Drive and.Gossage Avenue. Meeting Time F� .3:00 PM ❑ 7:00 PM Category (check one) M Consent Calendar 0 Public Dearing 0 New Business ❑ Unfinished Business ❑ Presentation! " Department : Director Contact Person PhoneNumber Community Mike Moo Cure Bates 778=4311 Development �' q2 Cost of Proposal N/A Account Number N/A Amount Budgeted Name of Fund: N/A Attachments to Agenda Packet'Item Resolution Authorizing Grading Letter from Developer Requesting Grading' Vicinity Map Summary Statement Magnolia Place Subdivision is a 444ot subdivision on'Magnolia Avenue; Samuel Drive and Gossage Avenue. The subdivision received tentative map approval on February 24, 2003. The final map and improvement plans were submitted °to the Community Development Department and at least one review has been completed. The developer „is, requesting permission to, commence grading activity on the subdivision site prior to final map approval. Recommended City Council Actici&Sugjested Motion Approve resolution: uthorizingtgrad ng for Magnolia Place Subdivision prior to final map approval. Rev'e d b Finance Director: a viewed b City.. Attorne Date: Approved b C Manner: Date: Dat i T a - 's ate: Rev"ision# and.Date,Revised: File Code: # May 18 , 2004 $ : \CC -City Council\Reports\Magnolia Place Grading.doc i v CITY OF PETALUMA, CALIFORNIA JUNE 21, 2004 AGENDA ]REPORT FOR RESOLUTION AUTHORIZING THE DEVELOPER, O''BRIEN GROUP;, TO COMMENCE GRADING A"CTIVITY'PRIOR TO FINAL MAP APPROVAL THEE; SITE OFMAGNOLIA PLACE SUBDIVISION LOCATED ON MAGNOLIA, AVENUE; SAMUEL; DRIVE AND GOSSAGE AVENUE. EXECUTIVE SUMMARY Magnolia Place is a 44 -lot subdivision on Magnolia Avenue, Samuel Drive and Gossage Avenue. The'Subdivision.received tentative map approval;on February 24, 2003. The final map and 'improvement °plans were submitted to the Community Development Department and at least one review has beenr completed'. The developer is requesting permission to commence grading activity on the subdivision site prior to final map approval 2': BACKGROUND The developer; O'Brien Group is requestingpermission to commence grading activity on the subdivision site prior.to final map approval. The final map and improvement plans are currently under review by the Community Development Department. According to section 20.36.010 of the Petaluma.Municipal Code, no permanent improvement work shall be commenced until improvement plans and ofHesshave been approved P. r roved by the City Engineer and a subdivision improvement contract has been executed in writing between the subdivider and the City. Grading' is not considered a permanent, improvement as defined in this section. The .City does require the developer to enter into a.grading agreement and provide a surety to secure the performance of the grading work. If the subdivider fails to secure final map approval, or the project is, abandoned after the grading is complete, the subdivider agrees to restore the area graded to its prior condition as stated in the grading agreement. Condition of Approval #18' for the Magnolia Place Vesting Tentative -`Map required a final Soils Investigation and- Geotechnical Report to be prepared by a registered professional civil engineer. The soils report was to address site- specific 'soil conditions and Iinclude recommendations for site preparation and grading. During the investigation for the January 27, 2004 geotechnical report prepared by Stevens, Ferrone & Bailey, it determined.that 1.5 'to 13 feet of non - engineered fill existed on a majority of the Gossage .Avenue project site. The engineers advised that if the proposed site, improvements and building foundations were constructed on, the non - engineered fill, it could result in damaging differential settlements at the ground surface. Therefore, the engineers determined it would be necessary o remove the no y n engineered fill to the native undisturbed soils, clean it of debris and replace it as compacted, engineered fill. This Would require the removal of nearly all of the trees along the north and south boundary of the Gossage Avenue site, most of which are blue gum eucalyptus. The developer has also advised that the type of soil on Magnolia Avenue site mandated that that they create a larger wetland mitigation area than previously anticipated to ensure that they meet the 2:1 wetland mitigation, required.'by' the Army Corps of Engineers and the Regional Water Quality Control Board. This will require the removal:of additional eucalyptus trees and the relocation of several live oak trees. A Tree Assessment Report, prepared by Ralph Osterling & Associates dated: December 21, 200'1, was used,_ in the preparation of the Initial Study of Environmental Impacts for the development. At that time, th0 arbon'st concluded that 70 trees would be required to be removed and another 83 trees would be impacted. Based on'the new information above, a revised Tree Assessment Report by Ralph Osterling & Associates dated June 2, 2004, was'submitted which evaluated the project's impacts to trees. It was found that a total of '142 out of the 445 trees on the two parcels would now have to be removed. Of these 142 `trees, 126 are non- indigenous to the Petaluma area. Another 3.4 trees, 33 of which are native coast live oaks, will be impacted by the development. The arborist has; also noted. that numerous blue gum eucalyptus. have originated from stump sprouts and while they may have good to excellent condition ratings care :should be taken when , siting a home within striking distance of these trees because of the generally weak attachment of the sprout to the stump from which it originated. Therefore; :in addition to the need to,-remove the eucalyptus for.soil recompaction, the arborist agrees that it'would be. prudent to remove the trees on. the. Gossage site and - replace them with native oaks or other desirable landscape trees that are of appropriate size and character for residential backyards. The mitigation measure imposed at the, time of environmental review required a replacement ratio of 3.2:1. Therefore; in order to .mitigate the, removal of -14f trees, 454 native trees will be planted on site. Staff has carefully reviewed: the, applicant's conceptual Tree Mitigation.,Plan that demonstrates which trees will remain, which will be removed,. which trees intended to be relocated and the locations and species of replacement trees. The final landscape plan, which .must concur-, with the conceptual. Tree Mitigation Plan, will be approved by the Site Plan and Architectural Review Committee ( SPARC). The original. Tree- Assessment did not include any relocation of trees; the ,applicant now intends , to relocate 42 6" to 12" diameter live oak trees. The. trees suitable for relocation will be stored, in. a:nursery area on the.Magnolia Avenue site just south of lot;27. These trees will be replanted within the development:afte� home construction is complete. Staff has concluded that replanting with native species at `the.'required ratio would reducelthe impact of the tree - removal to a level of insignificance. Tentative Map .condition of approval #8 required SPARC. approval of the project prior to, issuance of any grading or building permits. 'The project is scheduled for the June 24 SPARC meeting: 'The' Council may allow :issuance of a grading. permit and defer the SPARC approval to prior to . issuance of building permits.. 3. ALTERNATIVES Deny permission to grade the subdivision site prior to final map approval. A denial will delay the grading activity and push the schedule later into the construction season. 4. FINANCIAL, IMPACTS N/A 5. CONCLUSION The Community Development Department takes no exception to the request for grading prior to final reap approval. OUTCOMES ORPERFORMANCE MEASUREMENTS THAT VW ILL IDENTIFY SUCCESSOR COMPLETION: N /A' u 7. RECOMMENU4TION The Community Development Department recommends approval of the resolution authorizing the developer, O'Brien to commence grading activities on the Magnolia Place Subdivision site °prior to final map approval. Approval shall be subject to conditions of said resolution and securing the standard grading agreement. SACC -City CounciRReportsNagnolia Place Grading.doc „ I i 1 DRAFT RESOLUTION 3 AUTHORIZING GRADING FOR MAGNOLIA PLACE SUBDIVISION 4 PRIOR TO FINAL MAP APPROVAL 5 6 7 p O'Brien , q permission to grade the WHEREAS the developer, O Brien. Group, requested erni 8 Magnolia Place Subdivision,on Magholia;Avenue, Sarriuel Drive and'Gossage Avenue 9 prior to final map 'approval; and, 10 11 WHEREAS, the developer agrees to comply with the City Grading and Erosion Control 12 Ordinance No..1576 NCS'�; and, 13 14 WHEREAS e eve o a ee p gr s to comply with the Regional "Water Quality Control 15 otice of Intent and prepare 'a Storm Water Pollution Prevention Boards policies, `file a No 16 Plan; and, 17 18 WHEREAS, the developer agrees to enter into a grading agreement and provide surety to 19 secure the performance of the gradingwoik; and, 20 21 WHEREAS, the developer 'shall obtain a grading permit from the Community 22 Development Department, 23 24 NOW, THEREFORE, be it:resolved bythe Council of the City: of Petaluma that 25 authorization to grade Magnolia Place Subdivision prior to final map. approval is 26 approved. 27 28 29 SACGCity CouncilVesol utionsWagnolia : Place 'Grading.doc 4m k C f V I L E N G I N E E R S - U BAN PLANNERS - L A N D S U 1Z \ E Y 0 R S - LANDS CAPE A RCH I T E C T S 15 Third Street Santa Rosa, CA 954 Tel: 7 54 6 45 1 Fax: 7 54 5 212 4 4. rV May 7, 2004 i7 M iAY r Mr. Curtis M. Bates Communit y Development Department, Engineering -Sectio CITY OF. PETALUMA 11 English .Street Petaluma, CA, 94952-2610 SUBJECT: Magnolia Place Dear Curt: As engineers for O'Brien Group, we are sending this letter on their behalf The O'Brien Group is havin& good success in.reaching re for wetland mitigation issues tree mitigation, dr.a : inage design, and'detailed subdivision design, and grading could commence by *early summer 2004. This desired grading commencement date will precede recordation of 'the FindlMap by several months. Please accept this letter as a formal request to start the City Council approval of grading preceding Final Map recordation. Very truly yours, CARLILE MACY DA PIED C. NSON, PE Project Manager . DCH:bc 2003079.A0/GC/DCH Bates.1tr 050704 M. Eric'K,elle" O'Brien Group Tom'Cr6iis6. OBiie'nt'roup D Valley Dan i Mission Va ley / F U -KATHLEEN 'WAY 5 n t - - -_ �-- ---. -- UrMtS WAY —MO URNING .DOyt.0 _ HONTAR LN . 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