Agenda Packet_2022-05-17 - Laserfiche WebLink

Home Browse Search

FINAL DRAFT PRELIMINARY REPORT (Connections to EOCF #2) The pressure reducing facility can be located within Heim Ave. cul-da-sac in the vicinity of the existing OC-No. 40 MWD service connection. The PR facility is recommended to be located in the existing public parkway right-of- way or it could be located within the street if there is open utility corridor. By locating the facility within Heim Ave. there will be minimal impact on traffic on Tustin Ave. Figure 5 also shows the proposed MWD connection facilities at Heim Ave. and Tustin Ave. These proposed facilities will include: proposed meter flow control vault with 16-inch modulating butterfly valve and magnetic flow meter; connection to the existing piping between the meter vault and connection vault, including one 16-inch valve (downstream side of the flow control vault) and one valve matching size of piping between the connection and the existing OC-40 meter vault; and new electrical and SCADA control facilities. The proposed flow control vault is recommended to be located in the existing public parkway right-of-way within Heim Ave. cul-da-sac or it could be located within the street if there is open utility corridor. By locating the facility within Heim Ave. there will be minimal impact on traffic on Tustin Ave. 5.5 City of Tustin Walnut Well Site Figure 6 shows the facility location and the corresponding proposed conveyance piping. The following is the proposed alignment: Walnut Ave to Newport Lane to OC-43 meter vault. Assuming 5 cfs excess groundwater, the EOCF#2 Discharge Water Main is proposed to be 12-inches in diameter and rated for 200 psi. The pressure reducing facility can be located within Walnut Ave. in the vicinity of the existing OC-43 MWD service connection. The PR facility is recommended to be located in the existing public parkway right-of-way or within an easement adjacent to the parkway. If not feasible or easement is difficult to obtain, it could be located within the street if there is open utility corridor. Figure 6 also shows the proposed MWD connection facilities at Newport Lane and Walnut Ave. These proposed facilities will include: proposed meter flow control vault with 12-inch modulating butterfly valve and magnetic flow meter; connection to the existing piping between the meter vault and connection vault, including one 12- inch valve (downstream side of the flow control vault) and one valve matching size of piping between the connection and the existing OC-43 meter vault; and new electrical and SCADA control facilities. In addition, the City of Tustin stated that the existing meter vault needs to be upgraded at the same time. The proposed flow control vault is recommended to be located in the existing public parkway right-of-way or within an easement adjacent to the parkway. If not feasible or easement is difficult to obtain, it could be located within the street if there is open utility corridor. Pasadena Well Site Figure 6 also shows the facility location and the corresponding proposed conveyance piping for the Pasadena Well. The following is the proposed alignment: 2nd Street to Myrtle Ave. to Main St. to B St. to Walnut Ave. to Newport Lane to OC-43 meter vault. Assuming 4 cfs excess groundwater, the EOCF#2 Discharge Water Main is proposed to be 12-inches in diameter and rated for 200 psi. It should be noted that this proposed alignment includes the bore/jack of the Santa Ana Freeway on B Street (about 500 feet in length). The pressure reducing facility can be located within Walnut Ave. in the vicinity of the existing OC-43 MWD service connection. The PR facility is recommended to be located in the existing public parkway right-of-way or within an easement adjacent to the parkway. If not feasible or easement is difficult to obtain, it could be located within the street if there is open utility corridor. Figure 6 also shows the proposed MWD connection facilities at Newport Lane and Walnut Ave. These proposed facilities will include: proposed meter flow control vault with 12-inch modulating butterfly valve and magnetic flow meter; connection to the existing piping between the meter vault and connection vault, including one 12- inch valve (downstream side of the flow control vault) and one valve matching size of piping between the connection and the existing OC-43 meter vault; and new electrical and SCADA control facilities. Orange 9tq%9 1District/Moulton Niguel Water District 30 - 27 5/17/2tIMA TECH Evaluation of Groundwater Conveyance Options 15