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HomeMy WebLinkAboutAGENDA REPORT 1992 0108 CC SPC ITEM 08H ITEM "MIS MOORPARK � e 799 Moorpark Avenue Moorpark, California 93021 (805) 529-6864 0 POORPARK, CALIFORNIA City Coyu cllll Meetng of�/[�lJq_�+J,�199.... ACTION: Cal eg By ///lea MEMORANDUM TO: The Honorable City Council FROM: Kenneth C. Gilbert, Director of Public Works DATE: January 2, 1992 (Council Meeting 1-8-92) SUBJECT: Authorization to Advertise for Receipt of Bids for the Replacement of Sidewalks and Parkway Trees on the East Side of Tierra Rejada Road Between Los Angeles Avenue and Courtney Lane [Penrose Avenue] OVERVIEW This requests authorization to advertise for receipt of bids for a project to replace the subject damaged sidewalks and the street trees causing the damage. DISCUSSION A. Project Location The project area is located on the east side of Tierra Rejada Road between Los Angeles Avenue and Courtney Lane. The trees in this parkway are located to the rear of residential properties located on the west side of Penrose Avenue in the Heather Glen Area. The parkway sidewalks just south of Courtney Lane show onl minor damage. It is, therefore, not proposed that this area biz included in the project scope of work. This area will be\ monitored and corrective measures taken when and if the need` arises. PAUL W. LAWRASON JR. BERNARDO M. PEREZ SCOTT MONTGOMERY ROY E. TALLEY JR. JOHN E. WOZNIAK Mayor Mayor Pro Tern Councilmember Councilmember Councilmember Printed On Recycled Paper Penrose Trees Page 2 B. Project Need The sidewalk in the Project area is seven and one-half feet wide. There are ten tree wells in this parkway area. Sycamore trees are planted in the northerly eight tree wells. [The trees were removed from the two northerly tree wells to improve the visibility for vehicles approaching Tierra Rejada Road. It is proposed that the trees not be replanted in this area. ] Sycamore trees are known to be incompatible with sidewalks, curbs gutters and other hardscape improvements. The shallow roots of this species of tree can cause damage to surrounding hardscape improvements. When this type of tree is placed near such improvements, care should be taken to install root barriers to protect adjacent improvements, and deep well irrigation systems to encourage root growth downward. The Sycamore trees in the project area are a good example of the type damage which can occur. The sidewalk in the project area shows extensive evidence of damage. Almost the entire sidewalk in this area is lifted and should be replaced. In addition, the adjacent block needs to be examined for any potential problems caused by the tree roots. It is recommended, therefore, that the damaged sidewalks be replaced and that the Sycamore trees which caused the damage, be removed and replaced with a more suitable species of parkway tree. C. Project Design 1. Sidewalk -- Most of the seven and one-half feet wide sidewalk would be removed and replaced. The gutter is undamaged and will remain in place. 2. Tree Wells -- The proposed project calls for the complete removal and replacement of all of the trees. This will allow for the maximum degree of flexibility in redesigning and reconstructing the tree wells. It is possible that the spacing of the trees could be increased reducing the number of tree wells to seven. The dimension of the tree wells will be 4 feet long and 3 1/2 feet wide. This latter dimension will leave room for a four feet wide sidewalk between each tree well and the block wall . 3. irrigation -- There is an existing irrigation system in the area. The project specifications would call for the protection of this system in place. The system would be modified to provide deep well irrigation for each tree well. Penrose Trees Page 3 C. Project Design (cent) 4. Trees -- It is proposed that the species of tree to be planted be an evergreen with a root structure suited for this type of parkway. It is also proposed that the size of the trees to be planted be twenty-four inch box trees, and that tree root barriers be installed at the time of planting. The Bidding Documents could call for bid options including: 1) a Deduct Alternate to substitute fifteen gallon trees; and/or, 2) a Deduct Alternate to permit the City to provide the trees from the annual allotment of trees from Boething Nursery. D. project Cost Estimated project costs are as follows: Item Tree Work Sidewalks Total Construction Tree Work Removal 1 ,600 1,600 Replacement (24" box) 1,200 1 ,200 Irrigation Modification 1 ,500 1 ,500 Tree Root Barriers 800 800 Sidewalks Removal 3,700 3,700 Replacement 11 .000 11 .000 Sub-Total 5,100 14,700 19 ,800 Contingency (10%) 500 1 .500 2 .000 Sub-Total 5,600 16,200 21,800 Inspection 400 1 .100 1,500 TOTAL $ 6,000 $ 17,300 $ 23 , 300 E. Funding Source: Budgeted Projects The Budget for Fiscal Year 1991/92 includes projects which cover contingency projects like the one described above. Two of these projects are re-caped as follows: Budget Amount atem Account No. Amount Remaining Assessment District 84-2 Tree Replacement 142-642 $12,000 $12 ,000 Gas Tax Fund Sidewalk Replacement 143-903 $40,000 $37,000 r Penrose Trees Page 4 F. Notice of Proposed Project A letter was sent to each of the property owners and residents on Penrose Avenue adjacent to the project, notifying them of this proposed project and that the City Council would be considering same at tonight's meeting. RECOMMENDATIONS Staff recommends that the City Council approve the above described project and authorize staff to advertise for receipt of bids for same.