Hydrogeologic evaluation of the Castle Hayne aquifer system north of New Bern, North Carolina : implications for disposal of tertiary-treated wastewater into the Martin Marietta Glenburnie Quarry / by Sara Matyiko.
| Author/creator | Matyiko, Sara author. |
| Other author | Spruill, Richard K., degree supervisor. |
| Other author | East Carolina University. Department of Geology. |
| Format | Theses and dissertations |
| Production | 2001. |
| Description | 189 leaves : illustrations ; 28 cm |
| Supplemental Content | Access via ScholarShip |
| Subjects |
| Summary | Pressure to reduce nutrient loading in the Neuse River prompted the City of New Bern to investigate alternatives for disposal of tertiary-treated effluent. Instead of discharging effluent into the Neuse River, the New Bern Publicly Owned Treatment Works Facility plans to dispose 4.5 million gallons per day (mgd) into the inactive Glenburnie quarry. Incentives include replenishing the groundwater system, reducing discharge and nutrients to the river, decreasing reliance on the Cretaceous aquifer system for water supply, and furnishing the city with a resource of economic importance. The drilling, evaluation, and monitoring of six test wells into the Castle Hayne aquifer system (CHAS) near the Glenburnie Quarry established hydro geologic conditions. Groundwater samples from the wells were analyzed for major and minor element geochemistry. Additional CHAS wells that are maintained by the North Carolina Department of Water Resources were monitored. Potentiometric surface maps were created to demonstrate CHAS flow patterns. The Eocene CHAS, a highly transmissive, sandy, and moldic limestone, exists in the area and is confined by surficial sediments. Upper CHAS transmissivity and storage coefficient values average 10,000 ft2/d and 4 x 10-4. During pre-mining conditions, the groundwater flow direction was easterly across the area. Mine dewatering altered the flow pattern and facilitated movement of groundwater from the Neuse River toward the Glenburnie quarry, as indicated by chloride-rich water in wells east of the lakes. Addition of effluent to this system will cause water to migrate radially from the lake through the CHAS. Disposal of effluent into the lake benefits the groundwater system by 1 ) forcing the saline water present in the aquifer east of the quarry back toward the Neuse River, 2) reducing the amount of effluent disposed into the Neuse River, 3) increasing infiltration to the groundwater system, and 4) providing New Bern a substantial renewable groundwater resource. New Bern uses the Cretaceous aquifer system for water supply; water levels in this system have been declining in Craven County at 3 ft/yr. This plan gives New Bern an option for disposing its treated effluent and provides the city with a more dependable water resource - the CHAS. |
| General note | Presented to the faculty of the Department of Geology. |
| General note | Advisor: Richard K. Spruill |
| Dissertation note | M.S. East Carolina University 2001 |
| Bibliography note | Includes bibliographical references (leaves 61-62). |
| Genre/form | dissertations. |
| Genre/form | Academic theses. |
| Genre/form | Academic theses. |
| Genre/form | Thèses et écrits académiques. |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Joyner | University Archives | ASK AT SPECIAL COLLECTIONS DESK | ✔ Available | Request Material |
| Electronic Resources | Access Content Online | ✔ Available |