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HomeMy WebLinkAboutWQ0018708_Hydrogeological Investigation_20010425• OR" THE _LAKES;; NORTH=CAROLI M _PROJECT N030198: pplied Keoure May 1,.200:1 NCDENR, DWQ Groundwater Section Attn.: Mr: Art Barnhardt Wachovia Building Suite 714 Fayetteville; North Carolina 2830.1 Hydrogeologic}nuestigation' ...Bay Tree:Lake§,_ Spray,- Irrigation Field F. -Enclosed _is one:original hydrogeological..reportfor.the referenced.site:_;Do not hesitate to call if you have questions or. require further information: Sincerely amen L. Cornette;, P.G. roject Manager • .NCDENR, DWQ Permitting Section Attn. Mr. IA: Josh' P..0. Box29535; Raleigh,.North Carolina27626-0535,.v/ages-; I3c* 882 ' Hampstead, Nc,28443 910.270.2919 'FAX 270.2988 - REPRODUCTIONS This report has been prepared on behalf of and exclusively for the use of the Bay Tree Lakes. This report and findings contained herein shall not,' 41 whole or in part, be reproduced, disseminated or conveyed to any parties other than Bay Tree Lakes, or be used or relied upon by any other, party, in whole or in part, without Bay Tree Lakes or Applied Resource Management; PC's prior consent. TABLE OF CONTENTS Page 1.0 INTRODUCTION/PURPOSE 1 2.0 METHODS 1 A. MONITORING WELL DRILLING AND CONSTRUCTION 1 B. SURVEYING 2 C. MONITORING WELL DEVELOPMENT , 2 D. " MONITORING WELL YIELD TESTING , 2 E. MONITORING WELL GAUGING , 3 F. MONITORING WELL AQUIFER TESTING 3 3.0 FINDINGS OF INVESTIGATION 5 A. SITE GEOLOGY 5 B. SITE HYDROGEOLOGY 6 1. Depth to Groundwater 6 2. Groundwater Flow Direction and Velocity: 6 3. Surficial Aquifer Yield 6 4. Hydraulic Conductivity 6 5. Transmissivity 7 6. Storativity 7 4.0 LIMITATIONS OF THE INVESTIGATION 7 •TABLE TABLE 1 - GROUNDWATER ELEVATIONS AS OF gt1/12/01 TABLE 2 SURFICIAL AQUIFER CHARACTERISTICS SUMMARY FIGURES FIGURE 1 SITE VICINITY MAP FIGURE 2 SITE MAP WITH TEST WELL LOCATIONS FIGURE 3 GROUNDWATER CONTOURS AS OF 4/12J01 ( 1 TABLE OF CONTENTS cont'd APPENDICES APPENDIX A BORING . LOGS, AS -BUILT WELL DETAILS, NORTH CAROLINA WELL CONSTRUCTION RECORDS APPENDIX B TIME VS. WATER LEVEL PLOTS APPENDIX C SLUG TEST PLOTS AND RESULTS' APPENDIX D - CALCULATIONS i 1 1 1 1 1 HYDROGEOLOGICAL INVESTIGATION FOR THE BAYTREE LAKES ._SPI3AY-IRRIGATIPN FIELD BAY TREE LAKES, NORTH CAROLINA. ARM PROJECT NO. 0108 PREPARED FOR: BAY TREE' LAKES April 25, 2001 1.0 INTRODUCTION/PURPOSE (Refer to Figure 1) The area of investigation is located north of Bay Tree Lake, north of NC Highway 41, near White Lake, North Carolina. The primary goal and purpose of this investigation and report isto identify and determine hydrogeplogical characteristics of the surficial aquifer beneath the site, as required for the installation and construction of a large volume on -site wastewater dispOsal system. 2.0 METHODS A. MONITORING WELL DRILLING AND CONSTRUCTION. (Refer to Figure 2 and Appendix A) Monitoring wells are installed under applicable licensing requirements, and are designed and constructed in accordance with accepted standards and practices. --A total .of four shallow Type I monitoringivvells (T-1 through* T-4) were installed to determine groundwater characteristics.The four wells were installed at locations which best represent the over all site geology and groundwater characteristics. All monitoring weals were installed utilizing hollow -stern augers to a depth of 25 feet below land surface (BLS). April 25, 2001 Subsurface soil and Sediment samples were logged utilizing spit -spoon samples. Subsurface materials were described in the field using visual/manual techniques as described in:ASTM' D-2487 and D-2488, and a boring log for each. borehole Was produced. All wells were constructed .in accordance with NCAC T15A:02C "Well Construction Standards" B. SURVEYING A base map of the site was adapted from a surveyed map prepared by Charles L. Matthis Surveying, P.A. Horizontal well locations and temporary benchmark elevations were determined by Charles L. Matthis Surveying, P.A. Temporary. benchmarks (TBM) established by Charles L. Matthis surveying, P.A. were used to provide a vertical datum to reference monitoring well top of casing and water level measurements. All water table measurements were referenced to the established datum to determine groundwater flow direction. C. MONITORING WELL DEVELOPMENT Monitoring wells were developed utilizing an air actuated doublediaphragm pump. Each well was developed utilizing a 20 .foot drop pipe which was sealed into the well casing with a sanitary well seal. The well seal was used in order to establish the maximum communication across the borehole wall between the well and the aquifer, maximizing the well development. Each well was developed until the water was clear. Groundwater turbidity was monitored throughout the well development to ensure good borehole cleaning. D. MONITORING WELL YIELD TESTING Well yield was measured throughout the development of each well to determine when the well was providing its maximum capacity. Yield was determined immediately prior to halting the development at the individual well. The yield was determined by timing the filling of a calibrated five gallon container. A series of three timed events was conducted at each well head. The three timed events were averaged for the specific well flow in gallons per minute at a specific drawdown for each well. 2 April 25, 2001. E. MONITORING WELL GAUGING Prior to gauging, each well was opened and allowed to equilibrate with the atmosphere. The .depth of the groundwater table was measured in each well utilizing an electronic probe. After determination of the groundwater table depth, the potentiometric elevation was determined utilizing top of well casing elevations.'. MONITORING WELL AQUIFER TESTING To estimate the hydraulic conductivity of the Isurficial aquifer, .a falling head/recovery test was performed on the wells drilled on -site. To perform each test, the static head of the groundwater was first measured. A slug of potable water was . introduced, and the rate of recovery was measured. These numeric values were set as the following ;ratio: h/Ho h = head level during recovery Ho = initial change in head level The ratio was plotted as an exponential function of time. A semilog graph was used to produce a linear plot of the ratio versus time. Two methods of data evaluation were utilized-(Hvorslev, and Bouwer and Rice). The first is utilizing the Hvorslev method for determining hydraulic conductivity: Utilizing Hvorslev, the hydraulic conductivity was mathematically deduced as follows: K = r2ln(UR) 2LTo where: where: K = Hydraulic Conductivity (ft/day) r = Well radius (ft) L = Sandpack length; (ft) R = Borehole'radius (ft); . . To= Time'.`' required (tirelag) for the recovering water level to be within. 37 percent of the static water level. i 3 April 25, 2001 The Hvorslev, method assumes .the following:- 1. Non -leaky confined aquifer of apparently infinite extent. 2.. Homogeneous, isotropic or anisotropic aquifer!of uniform thickness. 3. Water table is horizontal prior to the test. 4. Instantaneous change in water level. . ! 5. Inertia of water columnand' non -linear well ;losses"are negligible. 6. . Partially or fully penetrating well. 7. The well is considered to be of an infinitesimal width. 8. Flow is horizontal toward or away from the well. Bouwer and Rice established the following relationship: K = r2In(Rc,,, Ri : 1 . In(h0/ht) 2L t where: K = Hydraulic.Conductivity (ft/day) r = Well radius (ft) L = Length of screen (it) R = Borehole radius (ft) . ho= Initial displacement ht=displacement as a function of time The Bouwer and Rice Method assumes the following: 1. Unconfined or leaky confined aquifer with vertical drainage from above of apparently infinite extent. 2. Homogeneous, isotropic aquifer of uniform thickness 3. Water table is horizontal priorto the test. , 4. Instantaneous change in head at the start of the test. 5. Inertia of water column, and non -linear well losses are negligible. 6. Fully or partially penetrating well. 7. _. . The well storage is not negligible, thus it is taken into account. 8. The flow to the well is in a steady state. 9. 'There is no flow above the water table. . Groundwater flow velocity . was also calculated using the : following modification of Darcy's Law. V = K(dh/dI) Ne April 25, 2001 Where: K = Hydraulic ccindUctii./ity. (ft/day) N. =7 Effective porosity (unitless) dh/dI = Hydraulic gradient (ft/ft) Transmissivity was calculated utilizing the following relationship: T = Kb where: T = Transmissivity (ft2/day) K = Hydraulic conductivity (ft/ay) b = Aquifer thickness (ft) Storativity normally varies directly with aquifer thickness. Actual unconfined aquifer thickness is established at 25 feet. Subsurface geology was found to be fairly homogenous; therefore, the storativity was calculated for the 25 foot saturated thickness of the surficial aquifer. Storativity was calculated utilizing the following relationship: S = 3' X 10-6b where: S = Storativity (unitless) b = Aquifer thickness (ft) 3.0 FINDINGS OF: INVESTIGATION D. SITE GEOLOGY (Refer to Figure 2, and Appendix A) The subject site is located within the Coastal• Plain P,hysiographic Province of North Carolina. The upper 27 feet of the site was found to be underlain by Quaternary Surficial Deposits. As stated above, a total of four Type I monitoring wells were drilled and constructed within the surficial aquifer on - site. Soil samples obtained from the well borings 'revealed the site to be underlain by fine to medium grained, well sorted and rounded sand to a depth between 10, and 15 feet deep. The subsurface was found to grade into a medium to coarse grained, well rounded sand to depths of approximately 25 to 27 .feet. A dark gray, silty clay was found underlying the coarse grained'sand in TW-1 and TW-4. Reviewing thell/V-3 boring log reveals the initiation of the grading into the confining layer. 5 April 25, 2001 E. SITE HYDROGEOLOGY 1. Depth to Groundwater (Refer to Table 1) „Groundwater was found to range between 3.5 and 6:5 feet below the land surface (BLS). In comparison to Mean Sea . Level (MSL) elevation, groundwateryvas found to be approXimately.91 feet above 2. Groundwater Flow Direction and Velocity (Refer to Table 2, Figure 3 and Appendix Dy: 1 ' AS shown on Figure 3, groundwater wes calculated to flow toward the - southwest Calculation of the hydraulic gradient identified the flow to be approximately 0.15%. Groundwater flow velocity was calculated utilizing the mean value from the hydraulic conductivity slug tests performed on the Wells on -site (refer to subsection 4 below). Groundwater flow was determined to, toward the southwest at - :approximately 4.2 X 1072 feet per day. j 3. Surficial Aquifer'Yield (Refer to Table 2) As stated <above, well yield was measured throughout the development of each well Ito determine when the well was providing its maximum capacIty. ,yield was determined immediately prior to halting the development at the- individual !well. The yield was. determined by timingthe filling of a calibrated five gallon container. A series of four timed everits was conducted at each well head. The four timed events were averaged for the Spepifit well flow in gallons per minute at a specific drawdown for each Well. Well yields were found to range between 16 to 22 gallons per minute, with between seven and nine feet of drawdown, depending on the well. 4. Hydraulic Conductivity (Refer to Appendixes C and D) • Slug tests were used to determine the hydraillic conductivity beneath the site. Data generated from the slug tests was evaluated per the 6 April 25, 2001 Hvorslev Method, and Bouwer and Rice Method. As shown, the slug test data revealed hydraulic conductivity valuesranging between 10.1 and 8.6 feet per day within the upper portion 'of the surficial aquifer. A statistical mean of 13.45 feet per day was calculated from the slug test results. Due to the empirical nature of'the slug test information, the calculated mean value was used forfurther calculations within this investigation. 5. Transmissivity (Refer to Table 2 and Appendix D) Transmissivity was determined for the upper portion of the surficial. aquifer. The average K value presented above was utilized to determine a value of 336.25 ft2 per day. 6. Storativity (Refer to Table 2 and Appendix D) As presented in the calculations in, Appendix D, storativity normally vanes directly with aquifer thickness. A confining clay layer was encountered at >27 feet deep. With the depth of water averaging five feet BLS, a saturated surficial aquiferthickness of 25feet was utilized for calculation purposes.. Storativity was calculated to be 3 X 1 Os for the upper portion of the unconfined aquifer beneath the site. 4.0 LIMITATIONS OF THE INVESTIGATION The water monitoring wells analyzed as part of this investigation only provide isolated data points and may not represent subsurface conditions at every location in the project area. Analyses and conclusions of this report, being based on interpolation between data points and subjective.hydrogeologic interpretation, may not be completely representative of all subsurface conditions. Conclusions and recommendations of this investigation and report are based on the best available data in an effort to assist in the understanding ofthe surficial aquifer under the site. 7 TABLES J l 1 1 1 1 1 TABLE 1 BAY TREE LAKES SPRAY IRRIGATION FIELD BAY TREE LAKES, NORTH CAROLINA' GROUNDWATER ELEVOATIONS AS OF 4/12/01 WELL I.D.. DATE MEASURED TOP.OF CASING ELEVATION (MSL) DEPTH TO WATER WATER TABLE ELEVATION (MSL) TW-1 4/12/01 96.62' 8.18' ! • 91.09' TW-2 • 4/12/01 98.39' ' 7.22' ' • • . 91.17' TW-3 4/12/01 96.93' • . 6.00' ; 90.93' TW-4 4/12/01 100.00' 9.05' ' 90.95' ■M 11111 N llr MEI MB I N M MEI I - i MN NE NMI M TABLE.2 BAY TREE LAKES SPRAY IRRIGATION FIELD BAY TREE LAKES, NORTH CAROLINA SURFICIAL AQUIFER CHARACTERISTICS SUMMARY Monitoring - Well -. Specific.Yield (1! (Ne) ;Hydraulic Conductivity In ft/day (K) Well Yield In GPM (Q) TW-1 10-12'Grain size. Slug Test 0.25 Hvorslev 13.7 Bouwer and Rice - 10.1 17gals. at of 1 drawdown TW-2 10-12' Grain size Slug Test 0.25 23.7 17.7 22 gals. at 8' of .. drawdown TW-3, 10-12' Grain size Slug Test TW-4 _. ___-._ 0.25 �- ----- 0.2.5 .. 11.2 - - 13- - - 8.61 ---- . - . 20.5 gals. at 7.5' of drawdown 16 gals at 9.7' of ------- drawdown - - - _ 10-12' Gain size -_ . .-- Slug Test. - Average phreatic zone values - • 0.25 15.4 11.47 General Aquifer Characteristics 1. Groundwater Flow Velocity is 4.2X10-2 ft. per day to the west southwest. 2. Storativity 3x10-5 3. Transmissivity is 336.25 feet2 per day. Notes: (1) Johnson; A.I., Specific Yield- Compilation of specific yields for various materials, "U.S. Geological Survey Water-- Supply Paper 1662-D, 74pp., 1967. (2) Morris, D. A., and A.I. Johnson, Summary of hydrologic and physical properties of rock and soil materials, as analyzed by the Hydrologic Laboratory of the U.S. Geological Survey 1948-60, U.S. Geological Survey Water -Supply Paper 1839-D, 42 pp., 1967. FIGURES I' y / , \ Jr `� fit\/` pram ; `� ring S g p �46 r J� j� v 3 g r—`--- �Ql j� _ ` 1 z il 7 I 1 SUBJECT PROPER • 7 •' fir rJ4� F7, ir i\.'JL ,....: - r� ' s "^a l"„• tr:-%. 54 "�� • Gs; t\ •/ ,t"R..."�-44 n`'-.. i\\;.4 '+ ''x`rG� ••'�•.l f - 2a� \ `. t • ✓ } BA TREE LA f.h - 1 _..v. t — �. �r�� / �.� ' 1 E ' . ' f - i�vBP ..� r 3;. ! .. 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J fYG ff. ,�.y11 . f 1 �\ \'e\\ \ T r { J . i� Y.YMv h v'i r �4�'- 'AYE -,�.r,'-.�-t-"-s ,�,, ti,n . r�r' z k ` Z s \;. \ r r� ,}, t i % f ! ''' ' S 4 ,,,, f ` y, .t ,r S ,Yt, c�r�r�pFr5 ' ht , t mow, S'm�4 .^•' a 7 ,, rk`' .:S.' G`r i1�p.^'t4`y'+ .'S•,lf�`.r•+�4Y cS rr v Sam? ft: w , t'�1 ) k�r i? { rQr.� QZf f Z 3t '[/ T i' v F;� r w"`e' t i { e 4 -y 4 \ •� ----:;-tie ` f ` �� a? ,r \� " r-p� k d�-_,, -, -,.. , y r -� 'ru :: h� q A}•8F�.y's`ayi.•+s,. �t.,�1�'�"'. r4 }.��r (?'x-�{r€,14... IMNUI1 ?fir i s r A Adapted from USGS.Topographic Mdp N "White Lake, N.C.," 1986 ' • Contour Interval =5 Feet i ,. pplied Reeource Management PC TITLE: SITE VICIN\IITY i ' ' MAP FIGURE: JOB: 0108: SCALE: : . 1 u=2,000' DATE:. ' 5/01 /,O 1 DRAWN BY: , KLC P.O. Box 882, Hampstead, NC 28443 (910) 270-2919 FAX 270-2988 LEGEND > Test Well Location (98.39') Test Well Top of Casin \ IW 2 (98.39') itle: SITE MAP WITH TEST WELL LOCATIONS Figure: Note: Adapted from site! Li ! ., u l � ; ` :.. ir.:. a ''� , . -' cicxr ♦ • ♦ <Lc", • • • • • LEGEND Test Well Location (91.09') Groundwater Table El= Contour Interval = 0,C • • • • • • • • • • • • • • • • • • • • • • • • • • • "NV-2 (91.17') Title: GROUNDWATER CONTOURS AS OF 04/ 1 2/01 Figure: Note: Adapted from site r • •. r ;.• ; - • L Li L _J APPENDIX A BORING LOGS, AS -BUILT WELL DETAILS, NORTH CAROLINA WELL CONSTRUCTION RECORDS North Carolina - Department of Environment and Natural resources - Division of Water Quality - Groundwater Section 1936 Mail Service Center - Raleigh, N.C. 27699-1636- Phone (919) 733-3221 WELL CONSTRUCTION RECORD WELL CONTRACTOR: ARM's Waterworks - Don Cummings TW-1 WELL CONTRACTOR CERTIFICATION #: 2412 STATE WELL CONSTRUCTION PERMIT #: 1. WELL USE (Check Applicable Box): I I Residential Recovery E Heat Pump Water injection 2. WELL LOCATION: (Show sketch of the location below Nearest Town: Harrells Municipal Industrial El Agricultural _ Monitoring Other If Other, List:use: (Road Name and Numbers, Community, or Subdivision and Lot No.) 3. OWNER Bay Tree Lakes c/o D. Stephen Jones Address 33 West Bay Ridge Road (Street or Route No.) Harrells, NC 28444 City or Town State Zip Code 4. DATE DRILLED 2/12/01 5. TOTAL DEPTH 25' 6. CUTTINGS COLLECTED YES _ NO x 7. DOES WELL REPLACE EXISTING WELL? YES _ NO x 8. STATIC WATER LEVEL Below Top of Casing: 8.5 Ft. 9. TOP OF CASING IS 2.5 Ft. Above Land Surface* *Top of casing terminated at/or below land surface requires a variance in accor- dance with 15A NCAC 2C.0118 10. YIELD (gpm): N/A METHOD OF TEST N/A 11. WATER ZONES (depth): Surficial Aquifer 12. CHLORINATION: Type N/A Amount N/A 13. CASING Depth Wall Thickness Diameter Or Weight/Ft. Material From +2.5 To 15 Ft. 2" From To Ft. From To Ft. 14. GROUT SCH40 PVC Depth Material From 0 To 13 Ft. Bentonite From From To Ft. To Ft. 15. SCREEN Depth From 15 To 25 Ft. From To Ft. From To Ft. Method Poured Diameter Slot Size Material 2" .010 PVC 16. SAND/GRAVEL PACK: Depth Size Material From 13 To 25 Ft. Coarse Sand From To Ft. From To Ft. 17. REMARKS: County: Bladen DRILLING LOG DEPTH From To Formation Description SEE ATTACHED If additional space is needed use back of form LOCATION SKETCH (Show direction and distance from at least two State Roads, or other map reference points) SEE ATTACHED I DO HEREBY CERTIFY THAT -I- CONSTRUCTION STANDARDS, HIS WELL WAS CONSTRUCTED IN ACCORDANCE WITI 1 15A NCAC 2C, WELL AND THAT A COPY �F THIS ECO HAS BEEN PROVIDED TO THE WELL OWNER. ,t�tr�tr,sb�(z�2.,0(o SIGNATURE OF PERSON CONSTRU TING THE WELL DATE Submit original to Division of Water quality, Groundwater Section within 30 days FOR OFFICE USE ONLY Quad No: Serial No. Steel Manhole Ground Surface ' 12' Sand Locking WeII Cap Concrete/G rout Crown 25' Total Depth TW-1 BORING LOG BAY TREE LAKES DRILLED BY: ARM BLADEN COUNTY, NC LOGGED BY: E. Comette Sample Depth (ft) Description Water Content .Blow Count 2 - 4 Lt. tan/gray fine to medium grained sand. Trace ' i organic. . Moderate_ Grab 5 -7 Dark red brown, fine to medium grained sand with. trace coarse. Moderate Grab 10 -12 Medium gray/brown, well sorted, medium grained sand with trace coarse. High HP 15 -17 Lt. tan, medium to coarse grained sand with peds ' up to 0.3 inch. High HP 20 - 22 ` Lt. tan, well sorted, medium grained sand (trace coarse and trace fine). . High . HP 25 - 27 . Dark gray/black, silty clay. r Low HP HP - Hydraulic Push North Carolina - Department of Environment and Natural resources - Division of Water Quality - Groundwater Section 1936 Mail Service Center - Raleigh, N.C. 27699-1636- Phone (919) 733-3221 WELL CONSTRUCTION RECORD TW-2 WELL CONTRACTOR: ARM's Waterworks - Don Cummings WELL CONTRACTOR CERTIFICATION #: 2412 STATE WELL CONSTRUCTION PERMIT #: 1. WELL USE (Check Applicable Box): Residential Recovery 0 Heat Pump Water injection 2. WELL LOCATION: (Show sketch of the location below Nearest Town: Harrells Municipal Industrial _ Agricultural Other If Other, List use: (Road Name and Numbers, Community, or Subdivision and Lot No.) 3. OWNER Bay Tree Lakes c/o D. Stephen Jones Address 33 West Bay Ridge Road (Street or Route No.) Harrells, NC 28444 City or Town State 4. DATE DRILLED '2/12/01 5. TOTAL DEPTH 25' Zip Code 6. CUTTINGS COLLECTED YES NO x 7. DOES WELL REPLACE EXISTING WELL? YES NO x 8. STATIC WATER LEVEL Below Top of Casing: 8.5 Ft. 9. TOP OF CASING IS 2.5 Ft. Above Land Surface* *Top of casing terminated at/or below land surface requires a variance in accor- dance with 15A NCAC 2C.0118 10. YIELD (gpm): N/A METHOD OF TEST N/A 11. WATER ZONES (depth): Surficial Aquifer 12. CHLORINATION: Type N/A Amount N/A County: Bladen DRILLING LOG Monitoring ri DEPTH From To Formation Description SEE ATTACHED If additional space is needed use back of form 13. CASING Wall Thickness LOCATION SKETCH Depth Diameter Or Weight/Ft. Material (Show direction and distance from at least two State Roads, or other map reference points) From +2.5 To 15 Ft. 2" SCH40 PVC From To Ft. From To Ft. 14. GROUT Depth Material Method From 0 To 13 Ft. Bentonite Poured From To Ft. From To Ft. 15. SCREEN Depth Diameter Slot Size Material From 15 To 25 Ft. 2" .010 PVC From To Ft. From To Ft. 16. SAND/GRAVEL PACK: Depth Size Material From 13 To 25 Ft. Coarse Sand From To Ft. From To Ft. SEE ATTACHED 17. REMARKS: I DO HEREBY CERTIFY THAT TI-IIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH 15A NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS RECORD HAS BEEN PROVI ED TO THE WELL OWNER. SIGNATURE OF PERSON CONSTR TINGE WELL DAT Submit original to Division of Water quali rou ater Sectibbn within 30 days FOR OFFICE USE ONLY Quad No: Serial No. TW-2 Locking Well Cap Steel Manhole Ground Surface 13' Bentonite Concrete/Grout Crown 25' Total Depth TW-2 BORING LOG BAY TREE- LAKES DRILLED BY: ARM BLADEN COUNTY, NC. LOGGED BY: E. Comette Sample Depth (ft) Description Water Content Blow Count 2 - 4 Dark brown/black, well sorted,very fine to"fine grained sand (trace medium). Trace organic. High Grab 5 -7 Dark brown/black, well sorted, very fine to medium' grained sand. ; High Grab 10 -12 Dark tan, well sorted, very fine to medium grained sandy loam. Moderate HP 15 -17 Tan, well sorted, fine to medium grained sand. , High HP 20 - 22 Lt. tan, well sorted, fine to medium grained sand. High HP 25 - 27 Lt. tan, well sorted, medium grained sand (trace ; coarse). High HP HP - Hydraulic Push North Carolina - Department of Environment and Natural resources - Division of Water Quality - Groundwater Section 1936 Mail Service Center - Raleigh, N.C. 27699-1636- Phone (919) 733-3221 WELL CONSTRUCTION RECORD TW-3 WELL CONTRACTOR: ARM's Waterworks - Don Cummings WELL CONTRACTOR CERTIFICATION #: 2412 STATE WELL CONSTRUCTION PERMIT #: 1. WELL USE (Check Applicable Box): _ Residential Recovery 0 Heat Pump Water injection 2. WELL LOCATION: (Show sketch of the location below Nearest Town: Harrells Municipal Industrial Agricultural Monitoring Other If Other, List use: (Road Name and Numbers, Community, or Subdivision and Lot No.) 3. OWNER Bay Tree Lakes c/o D. Stephen Jones Address 33 West Bay Ridge Road (Street or Route No.) Harrells, NC 28444 City or Town State Zip Code 4. DATE DRILLED 2/12/01 5. TOTAL DEPTH 25' 6. CUTTINGS COLLECTED YES _ NO x 7. DOES WELL REPLACE EXISTING WELL? YES _ NO x 8. STATIC WATER LEVEL Below Top of Casing: 8.5 Ft. 9. TOP OF CASING IS 2.5 Ft. Above Land Surface* "Top of casing terminated at/or below land surface requires a variance in accor- dance with 15A NCAC 2C.0118 10. YIELD (gpm): N/A METHOD OF TEST N/A 11. WATER ZONES (depth): Surficial Aquifer 12. CHLORINATION: Type N/A Amount N/A 13. CASING Wall Thickness Depth Diameter Or Weight/Ft. Material From +2.5 To 15 Ft. 2" SCH40 PVC From To Ft. From To Ft. 14. GROUT Depth Material Method From 0 To 13 Ft. Bentonite Poured From To Ft. From To Ft. 15. SCREEN Depth Diameter Slot Size Material From 15 To 25 Ft. 2" .010 PVC From To Ft. From To Ft. 16. SAND/GRAVEL PACK: Depth Size Material From 13 To 25 Ft. Coarse Sand From To Ft. From To Ft. 17. REMARKS: County: Bladen DRILLING LOG From To DEPTH Formation Description SEE ATTACHED If additional space is needed use back of form 1 LOCATION SKETCH (Show direction and distance from at least two State Roads, or other map reference points) . SEE ATTACHED I DO HEREBY CERTIFY THAT "PHIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH 15A NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS RECORD HAS BEEN PROVIDED TO THE WELL OWNER. DATE SIGNATURE OF PERSON CO 5T UCTING TH WELL E Submit original to Division of Water quality, Groundwater Section within 30 days FOR OFFICE USE ONLY Quad No: Serial No. Steel Manhole Ground Surface 13' Belntonite Groundwater Table 12' Sand TW-3 Locking Well Cap Concrete/Grout Crown 15Riser 10' Screen 25' Total Depth TW-3 BORING LOG BAY TREE LAKES DRILLED BY: ARM BLADEN COUNTY, NC . LOGGED BY: E. Comette Sample Depth (ft). Description .. j Water . Content Blow Count 2 - 4 . ,Medium gray/brown, fine to medium grained sand. Moderate Grab 5 -7 Lt. pink/gray, fine to medium grained sand. Organic matter and debris. . High . ., ::Grab 7 - 9 Dark pink/brown; fine to medium grained sand. Organic matter and debris. •. • High HP 10 - 12 Med. Gray/brown, fine sandy clay inter -bedded with white to It. tan, medium to coarse grained sand. ' High HP 15 -17 Lt. tan, fine to medium grainedsand. i High HP 20 = 22 ' . Tan, medium grained sand with trace coarse and ! trace organic. High . HP I 25 - 27 ' Lt. tan,:medium grained sand with trace coarse and trace organic. 'High : . HP. HP - Hydraulic Push North Carolina - Department of Environment and Natural resources - Division of Water Quality - Groundwater Section 1936 Mail Service Center - Raleigh, N.C. 27699-1636- Phone (919) 733-3221 WELL CONSTRUCTION RECORD TW-4 WELL CONTRACTOR: ARM's Waterworks - Don Cummings WELL CONTRACTOR CERTIFICATION #: 2412 STATE WELL CONSTRUCTION PERMIT #: 1. WELL USE (Check Applicable Box): Residential Recovery ❑ Heat Pump Water injection 111111 2. WELL LOCATION: (Show sketch of the location below Nearest Town: Harrells Municipal Industrial I I 'Agricultural _ Monitoring Other If Other, List use: (Road Name and Numbers, Community, or Subdivision and Lot No.) 3. OWNER Bay Tree Lakes c/o D. Stephen Jones Address 33 West Bay Ridge Road (Street or Route No.) Harrells, NC 28444 City or Town State 4. DATE DRILLED 2/12/01 5. TOTAL DEPTH 25' Zip Code 6. CUTTINGS COLLECTED YES NO x 7. DOES WELL REPLACE EXISTING WELL? YES NO x 8. STATIC WATER LEVEL Below Top of Casing: 8.5 Ft. 9. TOP OF CASING IS 2.5 Ft. Above Land Surface* 'Top of casing terminated at/or below land surface requires a variance in accor- dance with 15A NCAC 2C.0118 10. YIELD (gpm): N/A METHOD OF TEST N/A 11. WATER ZONES (depth): Surficial Aquifer 12. CHLORINATION: Type N/A Amount N/A County: Bladen DRILLING LOG From To DEPTH Formation Description SEE ATTACHED If additional space is needed use back of form 13. CASING Wall Thickness LOCATION SKETCH Depth Diameter Or WeighUFt. Material (Show direction and distance from at least two State Roads, or other map reference points) From +2.5 To 15 Ft. 2" SCH40 PVC From To Ft. From To Ft. 14. GROUT SEE ATTACHED Depth Material Method From 0 To 13 Ft. Bentonite Poured From To Ft. From To Ft. 15. SCREEN Depth Diameter Slot Size Material From 15 To 25 Ft. 2" .010 PVC From To Ft. From To Ft. 16. SAND/GRAVEL PACK: Depth Size Material From 13 To 25 Ft. Coarse Sand From To Ft. From To Ft. 17. REMARKS: I DO HEREBY CERTIFY THAT TI-IIS WELL WAS CONSTRUCTED IN ACCORDANCE WITI 115A NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS CORD HAS BEEN PROVID TO THE WELL OW'NE,R. 1/4. Quad No: FOR OFFICE USE ONLY SIGNATURE OF PERSON CO ST UCTING TI( WELL DATE Submit original to Division of Water quality, ndwater Section within 30 days Serial No. Locking Steel Wel!shield Ground'Surface".- 12' Bentonite • Groundwater , r Table 13' Sand TW-4 Concrete/Grout Crown 15' Riser 10' Screen 25' Total Depth TW-4 BORING LOG BAY TREE LAKES DRILLED BY: ARM BLADEN COUNTY, NC LOGGED BY: D. Cummings Sample Depth (ft) Description I Water Content Blow Count 2 - 4 Lt. tan/gray fine to medium grained sand. Trace, organic. Moderate Grab 5 -7 Dark red brown, fine to medium grained sand with trace coarse. Moderate Grab 10 -12 Medium gray/brown, well sorted, medium grained , sand with trace coarse. High HP i, . 15 -17. Lt. tan, .medium to coarse grained sand with peds upto0.3inch. High HP 20 - 22 Lt. tan, well sorted, medium grained sand (trace coarse and trace fine). High HP 25 - 27 Dark gray/black, silty clay. Low HP HP - Hydraulic Push APPENDIX B TIME VS. WATER LEVEL PLOTS Applied Resource Mgmt., PC A P.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug test analysis , No: 0108 Project: Bay Tree Lakes Client: Bay Tree Lakes Location: NC Hwy. 41 Slug test: TW-1 Bay Tree Test well: TW-1 Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date: 5/2/01 Analysis method: Time vs. Change in waterlevel plot Aquifer thickness; 25 [ft] i • 0 6 . . Time vs. Change 12 in w aterlevel plot Time [s] 18 , , 24 30 ' -E- TV11-1 0' 1.066 Ti 2.132 `w g a) m 3.198 t 4.264 5.33- 1 i I • • I Applied Resource Mgmt., PC AP.O. Box 882' Hampstead, North Carolina 910.270.2919 Slug test analysis No: 0108 Project: Bay Tree Lakes Client: Bay Tree Lakes Location: NC Hwy. 41 Slug test: TW-2A Bay Tree Test well: TW-2 Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date: 5/2/01 Analysis method: Time vs. Change in waterlevel plot Aquifer thickness: 25 [ft] 0 6 Time vs. Change 12 in waterlevel plot . Time [s] 18 24 30 -el- TVU-2 N 1 1.241 w - 2.488 CD 'al c a) I c 3.732 i 4.976 6.22— ' Applied Resource Mgmt., PC AP.O. Box 882 Hampstead, North Carolina 910.270:2919 , Slug test analysis No: 0108 Project: Bay Tree Lakes Client: Bay Tree Lakes Location: NC Hwy. 41 Slug test. TW-3 Bay Tree Test well: TW-3 Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date; 5/3/01 Analysis method: '• Time vs. Change in waterlevel plot Aquifer thickness' ,25 [ft] • 0 6 0' Time vs. Change 12 in waterlevel plot Time [s] . 18 24 . 30 m-1W-3 0.42 47) 0.84 ai a) g C 1.26 6 1.68 _ 2.1— i i i i E 1 Applied Resource Mgmt., PC A P.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug test analysis No: 0108 Project: Bay Tree Lakes Client: Bay Tree Lakes Location: NC Hwy. 41 Slug test: T-4, Bay Tree Test well: TW-4 Test performed by: JLC Test date: 4/22/01 Evaluated by: . JLC Evaluation date: 4/22/01 Analysis method: Time vs. Change in waterlevel plot Aquifer thickness: 25 [ft] 0 0 7 Time vs. Change 14 in w aterlevel plot Time [s] 21 , 28 35 le- TW 4 0.828 - - 1.656 °' a) g t - m 2.484 s U - 3.312 . 4.14— / . APPENDIX C SLUG TEST PLOTS AND RESULTS Applied Resource Mgmt., PC , AP.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug test analysis No: 0108 Project: , Bay Tree Lakes Client Bay Tree Lakes Location: NC Hwy. 41 Slug test: TW-1 Bay Tree Test well: TW-1 Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date:; 5/3/01 Analysis method: HVORSLEV • Aquifer thickness: 25 [ft] 0 6 • HVORSLEV -12 Time [s] 18 I - . i 24 30 s 11N-1 - • . 4 ■ s ' 1E2 I I 1 I 1 1 E-3 Conductivity: 1 1.37x1041 [ft/d] • I . Applied Resource Mgmt., PC . , A P.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug testanalysis No: '0108 Project: Bay Tree, Lakes Client Bay Tree' Lakes Location: NC Hwy. 41 Slug test: TW-1 Bay Tree Test well: TW-1 Test performed by: JLC Test date: . 4/22/01 Evaluated by: : Evaluation date: 5/3/01 Analysis method: BOUWER & RICE . Aquifer thickness: 25 [ft] 9 6 BOUWER 12 ' & RICE Mmels] ' . . 18 , , : 24 . 30 • TVV-1 . - . . - ' - - . . , . e , . e , . 1E-2 13 . - . " - . ' . 1E-3 Conductivity: . '' . - • . .... ' , : • , . . . ' • • . 1.01 x10A+1 [ft/d] • . . 1 i ' . .. . , , ' Resource Applied Resoue Mgmt., PC P.O. Box 882 ' ' Hampstead, North Carolina 910.270.2919 Slug test analysis '; No: 0108 - 1 Project: Bay Tree Lakes . Client: Bay Tree Lakes Location: NC Hwy. 41 Slug test: TW-2A Bayl-ree Test well: TW-2 Test performed by: JLC Test date: ' ` 4/22/01 Evaluated by: Evaluation date: 5/3/01 Analysis method: .HVORSLEV Aquifer thickness: 25 [ft] 0 5 HVORSLEV 10' Time [s] 15 20 25 • TW-2 • ■ - 1E2 .3 o _ i.' 1E3- Conductivity: 2.37x10^+1 [ft/d] • Applied Resource.Mgmt.; PC P.O. Box 882 - Hampstead, North Carolina 910.270.2919. Slug test analysis' 1 No: 0108 1 Project: Bay Tree Lakes. Client: ' •Bay Tree Lakes Location: NC Hwy..41 Slug -test TW-2A Bay' Tree Test well: TW-2 , Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date; 5/3/01 Analysis method: BOUWER & RICE - ' Aquifer thickness:, 25 [ft] .. - 0 - 5 BOUWER 10 & RICE Time-[s] 15 . 20 25 . ■ TVV-2 . • !. . 1E2 s 1 E-3 Conductivity: • 1.77x10^+1 [ft/d] j ' Applied Resource Mgmt., PC . P.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug test analysis ' No: 0108 Project: Bay Tree Lakes Client: Bay Tree Lakes Location: NC Hwy. 41 i Slug test: TW-3 Bay Tree Test well: TW-3 Test performed by: JLC Test date: 4/22/01 Evaluated by: Evaluation date: I 5/3/01 Analysis method: HVORSLEV Aquifer thickness: 25 [ft] 1E2 0 . 5 HVORSLEV 10 Time [s] 15 20 25 m TVU-3 1 o s Conductivity: ■ 1.12x10A+1 [ft/d] 1 1 I Applied. Resource Mgmt., PC A P.O. Box 882 Hampstead; North Carolina 910.27'0.2919 Slug test analysis No: 0108 Project Bay Tree Lakes Client Bay Tree Lakes Location: NC Hwy. 41 Slug test. TW-3 Bay Tree Test well: TW-3 Test performed by: JLC Test date: 4/22/01 Evaluated by: ' Evaluation date:' 5/3/01 Analysis method: BOUWER & RICE • Aquifer thickness: ! 25 [ft] 0 5 BOU 10 NER & RICE Time [s] 15 1 ' 20 25 a 1W-3 e 1E2 o s Conductivity: i • . 8.61 x104+0 [ft/d] I . Applied Resource Mgmt., PC A P.O. Box 882 Hampstead, North Carolina 910.270.2919 Slug test analysis. ,, No: 0108 Project: Bay Tree Lakes Client Bay Tree Lakes Location: - NC Hwy. 41 Slug test. T-4 Bay Tree Test well: TW-4 Test performed by: JLC Test date: 4/22/01 ti Evaluated by: Evaluation dater ` JLC. 4/22/01 Analysis method: HVORSLEV Aquifer thickness:; 25 [ft] 0 6 HVORSLEV 12 Time [s] 18 , 24 30 • NU 4 • 1E2 o s Conductivity: i 1.30X10^+1 [ft/d] i 1 I Applied Resource Mgmt., PC ' A P.O. Box-882 Hampstead, North Carolina 910.270.2919 Slug test analysis • No: 0108 Project: Bay Tree Lakes Client: Bay Tree; Lakes Location: NC Hwy. 41 Slug test. T-4 Bay Tree : Test well: TW-4 Test performed by: JLC Test date: 4/22/01 . , Evaluated by: Evaluation date: , 5/3/01 Analysis method: BOUWER & RICE Aquifer thickness: ' 25 [ft] 9 . 6 BOUWER 12 , & RICE lime [s] 18 , 1 '• 24 30 ili -IW-4 . . - . . , . , ' . i . 1E2 o • Conductivity: . i ' la . ' _ . 9.45x10A+0 [ft/d] , . WELL CONSTRUCTION RECORD" 3 0 7 5 3 5 North Carolina - Department of Environment and Natural Resources - Division of Water Quality - Groundwater Section wEt.t. coy' it.kut OR (INDIVIDUAL) NAME (print) ty-A-NaSdi Os-ifInc11 dk, , CERTIFICATION #al X./ ,------) ‘vi:1 1. co \,1 RAcToR CONIPANY NANO.:-CIV NIkpil be,o5. WEI L 1-)KI I NIL- INL • 1. PIIONE # igia_„„5k4_ j/22.0(1 ST %TU.. \\ 1,1 I CONSTRUCTION PERNirrti _____ _ASSOCIATED WO PERNIIT# ts. .. - ( i I. api)1 icahle) t:ippi ieal•de 2. WELLLOCATION: bj*kuTi Nearest Town: County ... , I. WEI 1. l!SI: (( h • Applicable Box.): Residential 0 Municipal/Publie 0 Industrial 0 Agricultural NIonitoring Recovery 0 Heat Pump Water Injection 0 • Other 0 If0ther, List Use (Street Name. Numbers. Community, Subdivision, Lot No.. Zip Code) 3. OWNER: col T. Address 33 01424-/- gel 121215/ iiteir (street or Route No.) ( „) 0. 1 n„„ Sue Zip Code ( ate I- _,5 i si3 2_-- Area code- Phone number. 4. DATE DRILLED i/c-.11 5. TOTAL DEPT! I: . 6. DOES WELL REPLACE EXISTING WELL? YES IEY;NO. 0 7. sTATi( WATER 'LEVELDelOWTOP • .• FT. • • (t)se "+" ir Above Top or Casing) 8. TOP OF CASING IS • -A FT. Above Land Surface* *.lop of casing terminated atior below land surface requires a • • • variance in accordance with ISA NCAC 2C .0118. . . • aw-Ji 9. YIELD (gpm): JO METHODOF TEST PL-"-r• -10. WATER ZONES (depth): Topographic/Land setting ORidge IZI.Citr;pe OValley 0Flat (check appropriate box) Latitude/longitude of well location (degrees/minutes/seconds) Latitudelloneitude sOurce:OGPSOTopographic map Icheck box) . , . . DEPTI I . DRILLING LOG From . To . Formation Description 6 id _3 e. 7tP 3 to .iii7° P'. 561 PI ;J(_to 71- a /..2 . : / 2, 4- O 0? 7 i 9 " S o-IA-4_ - ;;.• 11. DISINFECTION: Type // 774- 12. CASING: Depth / , Diameter From 0 To /•7 ? From . To Ft. From To. Ft. 13. GROUT: _, Deptl /,‘ Material 0. From Pof 1 0 leo11 FL /11 cd- From /61 9 "To /7 '9 "Ft. 13.„,„..ite...,‘ pc6 14. SCREEN: Depth Amount / Wall Thickness or Weight/Ft. Material 177411AZ, p? Method Diameter Slot Size Material nio I', From_p7iy fo a/ / . Ft. in. , 0 /Z3 in. Pima" 1144 From To . Ft. in. in: 15. SAND/(jRAVEL PACK: Depth , Size 7 s • a From iTo ,T)iihR. ymii-1,, From To . Ft. . . 16. REMARKS:. • Materihl ,• . • C, • C:r1 CA • • • *-11 Tn--• • retrr„.1 LOCATION SKETCII Show,dtrectton and distance in miles l'ronat leas<R,c3 4.••••;:s two State Roads or County Roads. Incluite nurnbes. and common road names._ is)A'113 • 1 bo fiERkIrr' CERTIFY TIIAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITII I5A NCAC 2C, WELL CONSTR t I( TION STANDARDS, AND THAT A COPY OF TI I IS RECORD 11AS BEEN 'PROVIDED TO THE WELL OWNER grn cif4.9 2 . t , / - . .. .• , • -:.- :..'*. SIL1NA I 1.11(E OF MRS N•CONS I RUCTING-THEMELL - :• • • •• DATE • - • . - .... ......_ ........_ ... . • '. • • .. dil: , . , --...._ ..........,., - .. .., • Su With I he.original to the Division of Water Quality, GroundwLter Seeiion, 1636'Mail:Service Center - Raleigh, NC 27699-1636 Plume No. (919) 733-3221, within 30 days: li , C;W-1 REV. 07/2001 I .1 tl -,....„ APPENDIX D CALCULATIONS pplied Resource Management f C P.O. Box 882. Hampstead, NC 28443 (910) 270.2919 FAX 270-2988 TITLE: JOB: CALC. BY: CHECKED BY: DAT : /O APPENDIX Page l of pplied Resource Management I C P.O. Box 882 Hampstead, NC 29443 (910) 270-2919 FAX 270.2988 TITLE: �T� v /Tr( e -S JOB: oid CALC. BY: CHECKED BY: J t�� DATE: APPENDIX C 6( i wQ • Page ( of (Cief 147_ 6.257-Acc ri r1 ` c pplied Resource Management F'C P.O. Box 882, Hampstead, NC 28443 (910) 270-2919 FAX 270-2988 TITLE: JOB: 0/ D CALC. BY: CHECKED BY: DATE: APPENDIX