The Valle de Oro Community Plan states that new projects must eliminate safety hazards caused by direct access of traffic onto major arterial or collector streets. Technical studies will be required of the project applicant regarding fire protection planning and traffic.

There are two facilities serving children adjacent to the proposed Sand Mine. These vulnerable children who would be impacted by  the hazards of a Sand Mine and subsequent heavy truck traffic, exhaust, and noise include Adeona Healthcare, a residential treatment facility for 70 adolescents dealing with substance abuse and mental health disorders (including trauma) and Jamacha Elementary & Extended Day Program, a very busy public school serving over 500 students from Kindergarten to Fifth grade.

March 13, 2019 "Large Crowd Shares Concerns At Rancho San Diego Sheriff's Coffee With Community" by Miriam Raftery

April 26, 2019 "San Diego Communities Considered Some of the Worst Places to Escape a Wildfire" by Melissa Adon


ADEONA Healthcare is a treatment facility for 70 teens focused on serving youth with Mental Illness, Substance Use Disorders, and Behavioral Disorders.

Location: 2815 Steele Canyon Road, El Cajon, CA 92019

Sand Mine would be right next to ADEONA Healthcare that serves 70 teens ages 12 to 17


Jamacha Elementary School, part of the Cajon Valley Union School District, has 504 students enrolled in grades K-5. Children are between ages 4 to 12.

Location: 2962 Jamul Drive, El Cajon, CA 92019

Principal: Colleen Newman

Sand Mine would be a half mile from Jamacha Elementary School that serves 504 students in grades K-5 who are ages 4 to 12


This mine has a potential for significant impacts on the environment. Major impacted areas may include problems with noise, water and air quality.

September 25, 2014 "Danger In The Air: Health Concerns For Silica In Outdoor Air" by Environmental Working Group

SANDAG’s 2011 San Diego Region Aggregate Supply Study of which the Sand Mine developer (EnviroMINE, Inc.) was part of the expert review panel, indicates that sand mines should be located in areas not developed and that have not been conserved for environmental reasons. In addition, the study also states that a 1,300-foot setback from residential areas has been determined necessary to mitigate immediate impacts. Although sand is a needed commodity, this sand mine project’s proposed location does not meet County standards. It needs to be located in an appropriate environment with minimal negative impact to people, wildlife, water, air, and roads.


Development in floodways and floodplains has the potential to alter natural hydrologic flow. This can cause soil erosion and increased storm water runoff leading to loss of wetland. Health issues related to surface and groundwater contamination, including our drinking water, is a major concern.

The Sweetwater River is a 55-mile long stream in San Diego County from the Cuyumaca Mountains to San Diego Bay. Its drainage basin covers more than 230 square miles, all of it within San Diego County. Shortly after leaving the Cleveland National Forest in Descanso, the river flows into Loveland Reservoir, formed by Loveland Dam, the first of two major dams along the Sweetwater. After passing through the Rancho San Diego Cottonwood Golf Course, the river enters Sweetwater Reservoir, which is formed by the Sweetwater Dam. Below the dam, Sweetwater flows through Bonita and between National City and Chula Vista before reaching Sweetwater Marsh, a part of the San Diego National Wildlife Refuge, and then empties into San Diego Bay.


The surprising discovery of an endangered species, the Western Pond Turtle (Actinemys marmaorata), was found by wildlife officials in a tributary of the Sweetwater River near the Rancho San Diego Cottonwood Golf Course. The adjacent San Diego National Wildlife Refuge is also home to endangered birds such as the least Bell's vireo (Vireo bellii pusillus) and California gnatcatcher (Polioptila Californica) and the rare Quino checkerspot (Euphydryas editha quino) butterfly.

It's clear to see that the Sweetwater River, with its riverbed at Rancho San Diego, is definitely not an appropriate location for the proposed Cottonwood Sand Mine.

Photos on left were taken at Cottonwood Golf Course by Elizabeth Urquhart on 2/21/19.

February 27, 2019 "Sweetwater River from Loveland has Sweetwater River flowing" by David Gotfredson and Shawn Styles

February 25, 2010 "Water transfer between reservoirs set to generate cost savings for South Bay customers" by David Hernandez


This project will require concurrence from the California Department of Fish & Wildlife and the U.S. Fish & Wildlife Service. Several federally endangered and/or threatened species have been identified on this project site and within the vicinity of the project. 

November 23, 2018 "Recovery Plan For Endangered Butterfly Takes Wing In San Diego" by John Wilkens


Willow Glen Drive is designated as a County Scenic Road. The character of the area is single-family residential and the proposed project is for a sand mining/extractive use. The approved Community Specific Plan recreation system, including Cottonwood Golf Course, is supposed to serve as a buffer area and provide a larger setback to sensitive habitat areas. For a Major Use Permit to be approved, the sand mine project must show that the location, size, design, and operating characteristics are compatible with who currently uses the area (residents, buildings and structures). Projects must consider compatibility with the environment and community as well as the potential harmful effects it may have.

2019 created by STOP Cottonwood Sand Mine Board of Directors