DELAWARE GEOLOGICAL SURVEYUniversity of Delaware, NewarkDavid R. Wunsch, State Geologist

DELAWARE GEOLOGICAL SURVEYREPORT OF INVESTIGATIONS NO. 82

Plate 1

-

SOUTHERN NEW CASTLE - NORTHERN KENT COUNTIES GROUNDWATER MONITORING PROJECT:

RESULTS OF SUBSURFACE EXPLORATION AND HYDROGEOLOGICAL STUDIES

byA. Scott Andres, Zachary J. Coppa, Changming He, and Thomas E. McKenna

2018

Figure 4. Geophysical log, hydrostratigraphy, and monitoring well data from site 1. Figure 5. Summary of testing data from site 2a.

P-concentrationAs-concentrationS-concentrationPyrite Occurrence

Quartz

Clay (Smectite, Illite, Kaolinite, Chlorite)Carbonate (Calcite, Dolomite, Siderite)Feldspar (Plagioclase & Potassium)Fe-concentration

Figure 6a. Summary of testing data from site 2b. Figure 6b. Geophysical log, hydrostratigraphy, and monitoring well data from site 2b.

800

700

600

500

400

300

200

100

0

Dep

th (f

t bls

)

0 50 100 150 200 250Natural Gamma (API)

0 10 20 30 40SP (mV)

0 50 100Porosity (%)

0 1 2 3weak --> strong

0 50 100150percent

0.1 1 10100Concentration

(mg/kg)

0 100CumulativePercentage

Qdb

Tc

Tpp

Tsr

Tmq

Tvt

KTht

Knv

Kml

Kmt

Ket

Kmv

Km

FaultsRelativeCaCO3 Porosity

CumulativeMineral

Proportions

Concentration/Pyrite

Occurrence

Litho-stratigraphic

Unit

P-concentrationAs-concentrationS-concentrationPyrite OccurrenceLine/Scatter Plot 32

Quartz

Clay (Smectite, Illite, Kaolinite, Chlorite)Carbonate (Calcite, Dolomite, Siderite)Feldspar (Plagioclase & Potassium)Fe-concentration

Figure 7a. Summary of testing data from site 3. Figure 7b. Geophysical log, hydrostratigraphy, and monitoring well data from site 3. Figure 8. Geophysical log, hydrostratigraphy, and monitoring well data from site 4. Figure 9. Geophysical log, hydrostratigraphy, and monitoring well data from site 5.

Figure 10. Geophysical log, hydrostratigraphy, and monitoring well data from site 6. Figure 11. Geophysical log, hydrostratigraphy, and monitoring well data from site 7. Figure 12. Geophysical log, hydrostratigraphy, and monitoring well data from site 8. Figure 13. Summary of geophysical and lithostrtigraphic data from Gc52-15.

Knv

Knv

Qcl

Tcs

Knv

39 30' No

39 15' No 39 15' No

75 45' Wo 75 30' Wo

75 45' Wo 75 30' Wo

S

W

N

E

Miles0 4

40Kilometers

1 Study site + number01483170 Stream gage + identifierEb53-33 Well + DGS identifier

Delaware River

C&D Canal Eb43-22,23

Eb53-33

Fb23-38,70,71Fb23-29

Fb24-1501483165

01483170

01483155

01483200

Fc31-49

Fc42-11,15,36Fb54-09

Gb13-13 - 16

Hb12-05 - 07 Hb14-12 Hc11-13

Gb55-05 - 08

Hc34-43,50,51Hc35-25 - 27 Hd25-07 - 11

Gd33-04,05

Gd33-07 - 09

New Castle CountyKent County

Middletown

Smyrna

Townsend

Eb43-22,23

Eb53-33

Fb23-38,70,71Fb23-29

Fb24-1501483165

01483170

01483155

01483200

Fc31-49

Fc42-11,15,36Fb54-09

Gb13-13 - 16

Zz63-48,540Zz63-48,540

Hb12-05 - 07 Hb14-12 Hc11-13

Gb55-05 - 08

Hc34-43,50,51Hc35-25 - 27 Hd25-07 - 11

Gd33-04,05

Gd33-07 - 09

Eb23-22Eb23-22

Eb55-09Eb55-09

Ec32-03Ec32-03

Ed21-21Ed21-21

Fc51-28Fc51-28

Gb33-08Gb33-08

Maryland

Delaw

are

New

Jersey

New Castle CountyKent County

Middletown

Smyrna

Townsend

Gc52-15Gc52-15

PowerGeneratingStation

2

14 5

6

7

8

3

acubcuchscl

cl/rnf

KThtKnsKmlKmtKetKmvKmKptmmlppQclQdbrn

scuTcTcs

TmqTppTsrTvt

Armstrong confining unitBlackbird confining unit

Cheswold aquiferColumbia aquifer

Columbia/Rancocas aquifer undifferentiatedfill

Hornerstown FormationNavesink Formation

Mt. Laurel FormationMarshalltown FormationEnglishtown Formation

Merchantville FormationMagothy FormationPotomac Formation

Magothy aquiferMt. Laurel aquiferPiney Point aquifer

Columbia FormationDelaware Bay Group

Rancocas aquiferSummit confining unit

Calvert FormationCheswold sand

Manasquan FormationPiney Point FormationShark River FormationVincentown Formationunnamed confining unitucu

8

Figure 1. Location �gure for sites discussed on this plate.

Figure 2a. Detail map for site 2.

Figure 2b. Detail map for site 8.

Explanation for Symbols on Plate 1

(2a)

(2b)

ucu

ucu