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and elimination, construction site runoff control, post construction storm water management, P2 and good <br /> housekeeping, storm water monitoring, and reporting. Storm Water Pollution Control Plans were <br /> developed for 25 industrial facilities as part of the SWMP. <br /> ➢ Illicit Discharge Survey for Commander Navy Region Hawaii,Joint Base Pearl Harbor-Hickam,Oahu, <br /> Hawaii. E2 completed an illicit discharge survey for non-storm water discharges to the Commander Navy <br /> Region Hawaii (CNRH) municipal separate storm sewer system (MS4) and waters of the United States of <br /> America. The survey was completed in accordance with the National Pollutant Discharge Elimination <br /> System (NPDES) permit issued to CNRH. The scope included the inspection of over 1,300 facilities located <br /> throughout Joint Base Pearl Harbor-Hickam. The inspections included an assessment of facility operations <br /> and work practices that may result in illicit discharges as well as inspections of the storm drain system <br /> during dry weather to determine if illicit connections are present. E2 completed the inspections and <br /> developed recommended corrective actions and associated preliminary cost estimates based on the survey <br /> findings. <br /> ➢ Hickam Field Industrial Facility Inspections for Storm Water Compliance, Oahu, Hawaii. E2 <br /> completed annual inspections of 38 industrial facilities located within 54 buildings at Hickam Field to <br /> determine if facility operations were in compliance with NPDES permit requirements. Facility managers <br /> were interviewed and facility inspections were completed in order to identify good housekeeping and best <br /> management practices (BMPs), the availability of spill response procedures and spill kits, existing erosion <br /> control measures, hazardous materials and hazardous wastes stored on site, material inventory, condition <br /> and types of storage lockers and containers for hazardous materials and hazardous wastes, current <br /> industrial work activities and work practices,evidence of spills and/or leaks, evidence of dry weather flows <br /> and illicit connections, and condition of existing storm drain inlets. Deficiencies were noted and <br /> recommended corrective actions including additional BMPs were identified. <br /> ➢ Total Maximum Daily Load Study Wahiawa Annex, Oahu, Hawaii. E2 served as the principal <br /> investigator for a Total Maximum Daily Load (TMDL) study for Joint Base Pearl Harbor-Hickam (JBPHH)- <br /> Wahiawa Annex. This monitoring work was conducted to comply with the terms of National Pollutant <br /> Discharge Elimination System (NPDES) Permit for the Navy's municipal separate storm sewer system <br /> (MS4). Cutthroat flumes were installed at three areas where runoff exits the facility and flows towards <br /> Kaukonahua Stream to allow quantification of the volume of flow exiting the installation. Water quality <br /> monitoring of the runoff has been conducted for 2.5 years for Total Nitrogen and its components <br /> (ammonia, Kjeldahl nitrogen, and Nitrate/Nitrite as N), turbidity and Total Suspended Solids (TSS)). A <br /> predictive analytical model was developed for JBPHH-Wahiawa Annex that allows calculation of the daily <br /> nitrogen & turbidity loads exiting the facility towards Kaukonahua Stream using continuous rainfall data <br /> collected at the installation.This model will save the Navy money complying with the terms of their NPDES <br /> permit. <br /> Sewage/Wastewater and Industrial Waste Collection Treatment, and Disposal <br /> Systems Investigations and Assessments <br /> ➢ Slug Prevention Plan for Commander Fleet Activities Sasebo, Japan. E2 evaluated facilities and <br /> activities with the potential to discharge or spill pollutants that could cause a slug load, which would <br /> impact the operation, maintenance, or management of domestic wastewater treatment systems. <br /> ➢ Non-Domestic Wastewater Management Plan for NAVFAC Hawaii. Joint Base Pearl Harbor-Hickam. <br /> Oahu, Hawaii. E2 initially screened over 8,000 facilities to determine if the facility discharges or could <br /> potentially discharge non-domestic wastewater to the collection system. After the initial screening, E2 <br /> inspected approximately 800 facilities to determine if non-domestic discharges were occurring and <br /> whether proper pretreatment is being completed. Site inspections and interviews with facility managers <br /> were completed for those facilities that were confirmed to have non-domestic discharges.The management <br /> plan included a list of the inspection findings along with design recommendations to eliminate, divert, <br /> and/or pretreat the discharges. Cost estimates to implement the recommendations were provided. <br /> �i► COUNTY OF HAWAII-FY24- PAGE 46 <br />