Contractor shall provide onsite mobile x-ray, ultrasound and cardiac examination services for the patients at San Diego County Psychiatric Hospital (SDCPH) and Edgemoor Distinct Part Skilled Nursing Facility (DPSNF). The County reserves the right to add or delete locations as needed throughout the contract term. These services shall include but are not limited to STAT (immediately or right away) and routine x-rays, ultrasounds, mammograms*, echocardiograms, and electrocardiograms. These services shall be available 24/7, 365 days a year. These services are necessary due to the serious illness of the patients and to avoid the stress of transporting patients off-site for this service. *Mammograms do not need to be part of the portable machine.