•

RCRA REVISION CHECKLIST 55

Statistical Methods for Evaluating Ground-Water Monitoring

Data from Hazardous Waste Facilities

53 FR 39720-39731

October ,11, 1988

(Non-HSWA Cluster V)

STATE ANALOG IS:

FEDERAL

REQUIREMENT

FEDERAL

RCRA

CITATION

ANALOGOUS

STATE

CITATION

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

PART 264 - STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE

TREATMENT, STORAGE, AND DISPOSAL FACILITIES

SUBPART F - RELEASES FROM SOLID WASTE MANAGEMENT UNITS

• GROUND-WATER PROTECTION STANDARD

REQUIRED PROGRAMS

definition of

"detected" as in

264.98(f)

definition of

"exceeded" as in

264.99(d)

WAC 173-303

264. 91(a) (1)

264. 91(a) (2)

-645(2) (a) (i)

-645(2) (a) (ii;)

WAC 173-303

x

x

•

replace "entering"

after 264.93 with

"detected in"; in

the last clause

replace everything

after "constituents

have" wi th "been

detected in the

ground water." 264.92

remove "and" from

end of paragraph 264.97(a)(1)

redesignate

264.97(g)(3) as

264.97(a)(1)(i);

sampling of wells

not hydraulically

upgradient 264.97(a)(1)(i)

-645(3)

-645(8) (a) (i)

-645(a)(i)(A)

x

x

x

I

October II, 1988 - Page 1 of 8
RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd) •

FEDERAL

REOUIREMENT

FEDERAL

RCRA . CITATION

ANALOGOUS

STATE

CITATION

STATE ANALOG IS:

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

old 264.97{g)(3)(i)

becomes

264.97(a)(l)(i)(A);

insert "hydraulically" preceding "upgradient"; replace

"or" at end of

paragraph with "and"

264.97(a)(1)(i)

(A)

-645(8)(a)(i)(A)

(1) X

•

•

old 264.97(g)(3)(ii)

becomes

264.97(a)(1)(i)(B);

add "; and" to end

of paragraph

contamination detection when migration \ . f to uppermost agu1 er

detection monitoring

--sampling procedure,

number and kinds of

samples. sample size

sequencing of at

least four samples;

requirements of

interval between

alternate sampling

procedure

redesignate as

264. 97{a) (1) (i)

specify statistical

evaluation methods

for ground-water data

and specify in

permit; .requirements

for use of listed

methods:

parametric ANOVA

followed by multiple

comparisons

procedures

ANOVA based on

ranks followed by

multiple comparisons

procedures

264.97(a)(1)(i)

(B)

264.9?(a)(3)

264.97<g)

264. 97(g) (1)

264.97(g)(2)

264.97<g)(3)

264.97(h)

264. 97<h)(1)

264.97(h)(2)

-645(8)(a)(i)(A)

(ll)

-645(8){a){iii)

-645(8)(g)

-645(8) (g) (i)

-645(8)(g)(ii)

-645(8)(a)(i)(A)

rn»

-645(8)(h)

-645(8) (h) (i)

-645(8)(h)(ii)

X

X

X

X

X

X

X

X

X

October 11, 1988 - Page 2 of 8
•

•

•

RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd)

STATE ANALOG IS:

FEDERAL ANALOGOUS MORE BROADFEDERAL RCRA STATE EQUIV- STRIN- ER IN

REOUIREMENT CITATION CITATION ALENT GENT SCOPE

tolerance or prediction interval

procedure 264.97(h)(3) -645(8) (h) (iii)· X

control chart

approach 264. 97<h) (4) -645(8) (h) (iv) X

another statistical

method approved by

the Regional

Administrator 264.97(h)(5) -645(8) (h) (v) X

performance

standards for

statistical methods

chosen under

264. 97<h): 264.97(i) ~645(8)(i) X

appropriate for distribution of chemical

parameters or hazardous constituents;

transformed or distribution-free test 264.97(i)(1) -645(8) (i) (i) X

individual well

comparison--O.Ol

Type I error;

multiple comparisons--0.05 Type I

error, but maintain

0.01 Type I error

for individual wells 264 . 97 (i)( 2) -645(8)(i)(ii) X

for control chart

approach, what must

be approved by Regional Administrator 264. 97 (i)( 3) -645(8) (i) (iii) X

for tolerance or

prediction interval,

what must be approved

by Regional

Administrator 264.97<i)(4) -645(8) (i) (Lv) X

account for data

below detection

limit and requirements 264.97(i)(5) -645(8)(i)(v) X

procedures to

correct or control

for seasonal and

spatial variability 264.97(i)(6) -645(8) (i) (vi) X

maintenance of

October 11, 1988 Page 3 of 8
RCRA REVISION CHECKLIST '55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd) •

FEDERAL

REQUIREMENT

ground-water

monitoring data in

facility operating

record; when data

must be reviewed

FEDERAL

RCRA

CITATION

264.97(j)

ANALOGOUS

STATE

CITATION

-645(8)(j)

STATE ANALOG IS:

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

x

•

DETECTION MONITORING PROGRAM

ground-water monitoring program for each

chemical parameter

and hazardous constituent; record of

ground-water

analytical data 264.98(c)

Regional Administrator specifies frequency of samples

and tests; four

samples per well

semi-annually 264.98 (d)

determine if

statistically significant evidence

of contamination 264.98(f)

methods which can

be used 264.98(f)(1)

determine evidence of

contamination at each

monitoring well at

compliance point;

time period determined by Regional

Administrator 264.98(f)(2)

what owner/operator

must do if statistically significant

evidence of

contamination 264.98(g)

notification of

Regional

Administrator 264.98(g)(1)

immediate determination if Appendix IX

constituents are

in ground water 264.98(g)(2)

for constituents

WAC 173-303

-645(9)(c)

-645(9)(d)

-645(9)(f)

-645(9) (f) (i)

-645(9)(f)(ii)

0645(9)(g)

-645(9) (g) (i)

-645(9)(g)(ii)

x

x

x

x

x

x

x

X

October 11, 1988 - Page 4 of 8
RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd). •

FEDERAL

REOUIREMENT

FEDERAL

RCRA

CITATION

ANALOGOUS

STATE

CITATION

STATE ANALOG IS:

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

-645(9)(g)(v) X

-645(9)(g)(iv)(A)X

-645(9)(g)(iv)(B)X

-645(9)(g)(iv)(D)X

x

-645(9)(g)(iv) 'x

-645(9) (g) (iii)

-645(9)(g)(iv)(C)X

264.98(gH4)

264.98(g)(4)(i)

264.98(gH3)

264.98(g)(S)

Appendix IX

264.98(g)(4)

(ii)

264.98(g)(4)

(iii)

264.98(g)(4)

(iv)

application for

permit modification

constituent

concentration

proposed changes to

ground-water

monitoring system

proposed concentration limit or notice

of intent for

alternate

concentration limit

found, resample in

one month; if confirmed, form basis

of compliance monitoring; no resample--

initial analysis

is basis

proposed additions

or changes

what must be submitted within 180

days

1

•

data to justify

alternate concentration limit

engineering

feasibility plan for

corrective action

concentration of

264.98(g)(2) constituents does not

exceed values of

Table 1. 264.94

264. 98(g) (5) (i)

264.98(g)(5)(ii)

264.98(g)(5)(ii)

(A)

-645(9)(g)(v)(A) X

-645(9)(g)(v)(B) X

-645(9)(g)(v)(B)

(1) X

I,

I

•

alternate concentration limit

demonstration that

a source other than

regulated unit caused

contamination

notify Regional

Administrator of

intent to submit

demonstration

264.98(g)(5)(ii)

(B)

264.98(gH6)

264.98(gH6Hi)

-645(9)(g)(v)(B)

(11) X

-645(9HgHvi) X

-645(9) (g) (vi) (A)X

October 11, 1988 - Page 5 of 8
RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd) •

FEDERAL

REQUIREMENT

FEDERAL

RCRA

CITATION

ANALOGOUS

STATE

CITATION

STATE ANALOG IS:

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

report demonstrating

that another source

caused contamination

or error in sampling,

analysis or

evaluation 264.98(g)(6)(ii)

application for

permit modification 264.98(g)(6)(iii)

continue to

monitor 264.98(g)(6)(iv)

-645(9)(g)(v{)(B)X

'-645(9)(g)(vi)(C)X

-645(9) (g) (vi) (D)X

264.98(h) -645(9)(h) X

264.98 (i) deleted X

264.98(j) deleted X

264.98(k) deleted X

PROGRAM WAC 173-303

delete paragraph

delete paragraph

what must be done if

detection monitoring

program no longer

satisfies

requirements

COMPLIANCE MONITORING

• delete paragraph

Regional Administrator specifies

procedures and

statistical methods 264.99(c)

sampling program for

each chemical

parameter or hazardous constituent 264.99(c)(1)

records of groundwater analytical

data 264.99(c)(2)

statistical

evidence of

increased contamination of any

chemical parameter

or hazardous

constituent 264.99(d)

-645(10)(c) X

-645(10(c)(i) X

-645 (10) (c) (U) X

-645(10)(d) X

•

October 11, 1988 - Page 6 of 8
RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd) •

FEDERAL

REQUIREMENT

FEDERAL

RCRA

. CITATION

ANALOGOUS

STATE

CITATION

STATE ANALOG IS:

MORE BRQADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

•

•

method(s) to determine statistically

significant

evidence of

increased

contamination 264.99(d)(1)

within reasonable

time period, determine if statistically significant

evidence of increased

contamination at

each monitoring well

at compliance point 264.99(d)(2)

Regional Administrator

specification of

sample and test

frequencies; four

samples per well

semi-annually 264.99(f)

annual analysis at

each well's compliance point for all

264, Appendix IX

constituents; procedures regarding new

constituents not

in permit 264.99(g)

-645(10)(d)(i)· X

-645(10)(d)(ii) X

-645(lO)(f) X

-645(lO)(g) X

Qctober 11, 1988 - Page 7 of 8
RCRA REVISION CHECKLIST 55: Statistical Methods for Evaluating GroundWater Monitoring Data from Hazardous Waste Facilities (cont'd) •

FEDERAL

REOUIREMENT

FEDERAL

RCRA

CITATION

ANALOGOUS

STATE

CITATION

STATE ANALOG IS:

MORE BROADEQUIV- STRIN- ER IN

ALENT GENT SCOPE

•

remove old 264.99(h)

and redesignate old

.264.99(i) as

264.99(h); revise

new 264.99(h)--

change "(h)" to

"(d)"; replace "the

ground-water protection standard" with

"any concentration

limits under 264.94

are"; insert "or

she" after "he" 264.99(h)

redesignate old

264.99(j) as

264.99(i); revise

new 264.99(i)--

change "(h)" to

"(d)"; replace

"protection

standard" with

"concentration limits

under this section

are"; insert "or

she" after "he";

revise rest of

paragraph after

"regulated unit

caused" retaining

clause "In making

demonstration ... " 264.99(i)

redesignate old

264.99(k) as

264.99(j) 264.99(j)

redesignate as

264.99(j) so that

264.99(k) no

longer exists 264.99(k)

- 645 (10 H g)

-645(10Hg)

-645 (10) (i)

-645(10Hj)

x

x

x

x

I •

•

remove paragraph 264.99(1) removed

lNote in line 2 there is a typographical error- -"or'i should be "of."

October 11, 1988 - Page 8 of 8