ENV17-0002 (Emergency Recycled Water Storage Pond Project)

2 Documents in Project

Summary

SCH Number
2019089002
Lead Agency
Escondido, City of (City of Escondido)
Document Title
ENV17-0002 (Emergency Recycled Water Storage Pond Project)
Document Type
NEG - Negative Declaration
Received
Project Applicant
City of Escondido
Present Land Use
The project site is generally located within the County jurisdiction and generally consists of existing rural land uses on site with several agricultural groves and undeveloped open space. The primary parcels that contains the majority of the project site, as well as all immediately adjacent parcels, has a City General Plan land-use designation of Rural II. The parcel is zoned by the County as Limited Agriculture (A70), with a County General Plan land use designation of Semi-Rural Residential (SR-2). The project site is generally surrounded by semi-rural residential land uses and agricultural uses, similar to the project parcel. The nearest residences to the project site are approximately 140 feet to the east at an elevation of approximately 1,035 feet amsl and approximately 125 feet to the south at an average elevation of 1,000 feet amsl. Areas north of the project site are predominately undeveloped open space and disturbed land. Several residences and agricultural uses are located downslope from the project site to the west and southwest. The nearest downslope habitable structure is a single-family residence approximately 0.25 mile southwest of the project site.

Document Description
The proposed project involves the construction and operation of an emergency recycled water storage pond, which would provide up to ten million gallons of additional emergency storage in the City's recycled water system. The approximately 5.9-acre, five-sided pond would have a varying width between approximately 225 and 308 feet, with a 21.8-foot height to the water surface and 14.4 inches of freeboard. The total project disturbance area is estimated to be 7.2 acres, including the pond site, access road, and temporary construction easement. The emergency storage would be utilized to reduce flows from the City's Hale Avenue Resource Recovery Facility (HARRF) during wet weather storm events. As part of the City's Eastern Recycled Water System Project (which is a separate but associated project under the City's larger recycled water project), the Hogback reservoir would be converted to recycled water. The second component of the Eastern Recycled Water System Project would be a new recycled water pipeline, to be extended from the converted Hogback Reservoir along the east and south sides of the proposed emergency storage pond (City File No. ENV16-0007) to provide recycled water to agricultural growers. The proposed project would tie into this new pipeline through a new fill pipe on the east side of the pond with a manual valve that would be opened during heavy storm events when additional storage is needed. The stored recycled water would be utilized for agricultural irrigation and would be emptied through a drain line on the southwestern side of the pond. The City has opted to construct additional emergency recycled water storage in their wastewater system, which includes the treated effluent from the City's wastewater treatment facility, the Hale Avenue Resource Recovery Facility (HARRF). This additional emergency storage is part of a requirement by the San Diego Regional Water Quality Control Board (RWQCB) that was established to reduce the amount of flow during wet weather storm events. The City has chosen to meet this effluent flow reduction requirement by constructing emergency recycled water storage in the eastern portion of the City's service area. Based on the latest Wastewater Master Plan prepared by Brown & Caldwell (2006), the City needs to provide ten million gallons of additional emergency storage to meet the Board's treated effluent storage requirement. The emergency storage would be utilized to reduce treated effluent flows from the HARRF to the land outfall only during wet weather storm events and only if the flows are exceeding the discharge capacity of the land outfall. Historically, when flows have exceeded the land outfall capacity, the treated effluent would spill to Escondido Creek. In years past, the RWQCB issued the City a temporary emergency live stream discharge permit which allowed the City to discharge tertiary treated recycled water to the creek. The RWQCB has indicated that the temporary permit would not be renewed in the future and has instead required the City to begin the process of developing additional emergency recycled water storage.

Contact Information
Jay Paul
City of Escondido Planning Division
201 N. Broadway
Escondido, CA 92025

Phone : (760) 839-4537
jpaul@escondido.org

Location

Coordinates
33°07'00.8"N 117°01'46.7"W
Cities
Escondido
Counties
San Diego
Cross Streets
Via Sinsonte/Oro Verde Rd.
Zip
92027
Total Acres
~7.2
Parcel #
241-041-09, 241-041-10, 241-121-05 and 241-121-02
State Highways
SR 78
Schools
Orange Glen HS
Waterways
San Dieguito River
Township
12S
Range
1W
Section
30/9
Other Location Info
Within unincorporated County land adjacent to and within the Sphere of Influence of the City of Escondido, near the northern terminus of Via Sinsonte, east of S. Citrus Ave. and northwest of the State Route SR 78 and Cloverdale Road intersection.

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Storage Pond Type, 10 MGD) Other (Emergency Recycled Water Storage Pond Project)
Local Action
Water Storage Pond Project
Project Issues
Air Quality Archaeologic-Historic Noise Soil Erosion/Compaction/Grading Vegetation Wildlife Hydrology
Reviewing Agencies
Air Resources Board, Transportation Projects California Department of Conservation California Department of Parks and Recreation California Highway Patrol California Native American Heritage Commission California Regional Water Quality Control Board, San Diego Region 9 Office of Emergency Services, California Resources Agency State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights State Water Resources Control Board, Divison of Financial Assistance Department of Water Resources California Department of Transportation, District 11 California Department of Fish and Wildlife, South Coast Region 5

Attachments

Environmental Document
Emergency Recycled Water Pond FINAL 7-29-2019   PDF 36403 K Summary   PDF 244 K
NOC
NOC   PDF 1685 K
State Comments
2019089002_CDFW_19B0220-19CPA0282_Emergency Recycled Water_s20190904   PDF 385 K 2019089002_DT11_CT Ltr Emergency Recycled Water Storage 8-27-19   PDF 460 K DSOD Comment_SCH2019089002 Emergency Recycled Water Storage Pond Project   PDF 85 K

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