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Mr. Bocian explained that parking is limited to the west side of Oak Vista. Councilmember Olson supported the Mayor's request to explore artificial turf, which would reduce water use and maintenance demands, in the warm up area. Councilmember Narum asked staff to elaborate more on the water needs of Altemate 4. Mr. Bocian explained that while drought tolerant, the plant material in the park area is designed for irrigation and there are no plans to bring recycled water into that area at this time. Mr. Bocian explained that the original intent for the Oak Woodland Area was to begin solely with planting trees, as is reflected in the base bid, and allow those plantings several years to mature before proceeding with construction of the remainder of the project. However, staff did wish to provide the Council with a range of options and requested several altematives for consideration now. • Alternate 1 — Installation of the pathway leading from Oak Vista Way to the park. • Alternate 2 — Full construction of the site including pathways, trails and the overlook area. • Alternate 3 — Altemate 2 plus all amenities. Estimated total cost: $1.4 million. Returning to the Bernal Community Park, Mr. Bocian explained that staff was concemed that the quality of the multi -use sports fields could potentially be compromised by a low bid. In order to avoid this and allow for a greater amount of latitude it was decided to pull the fields and prepare a separate Request for Proposals (RFP). The RFP was structured with a base bid utilizing crumb rubber infill as well as an opportunity for all bidders to provide an alternative. He explained that this was at least in part related to recent health concerns regarding physical contact with crumb rubber. These concems were heightened by the status of SB 47 which essentially calls for a 2 -year moratorium while the state studies the use and potential implications of crumb rubber, although recent amendments to the bill do appear to be less restrictive. Staff is not aware of any scientific evidence to support the public's concerns but does acknowledge that silica sand is a known carcinogen and would require the posting of Proposition 65 wamings on the field. Nonetheless, the general consensus is that exposure to silica sand is safe in this context. Staff received 5 proposals, with all fields being comprised of a rock base, infill material, a monofilament or slit film layer and the artificial turf itself. Traditionally the infill layer has been comprised of crumb rubber, which is made from recycled tires, and silica sand. This infill material is present in the vast majority of fields in play today and is generally well -like by users. Of the optional proposals, 2 vendors bid systems that replace the silica sand and rubber with a product called ZeoFill which essentially acts as rubber -like cushioning layer under the field. Staff conducted a site visit to the closest ZeoFill field, located in Los Angeles, and feels that this altemative addresses the public and legislative concerns regarding crumb rubber. In addition, staff feels that the heavier grass product and use of a shock pad in the optional proposal from Valley Precision Grading will considerably extend the life of the field. While staff is recommending the optional infill system, it does believe that either the base or alternative would provide an excellent playing field. Mr. Bocian provided a brief overview of the various construction services agreements and reviewed the project budget. He presented a summary of available revenue and sources, all of which is fully funded with exception of the $2 million pledged by the various sports groups through their fundraising campaign. He also provided a breakdown of potential expenditures, noting that the base bid plus altemates totals a little over $12 million or almost $14.2 million with the ZeoFill all- weather field altemative. Other project costs not accounted for in the construction contract include a project City Council Agenda Page 3 of 11 April 07, 2015