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• DANGEROUS WASTE COMPLIANCE CHECKLIST/QUESTIONNAIRE CHAPTER 173-303 WAC



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Part 7: Post-Closure

This part of the checklist/questionnaire is applicable to all hazardous waste disposal facilities operating under interim status at which dangerous waste will remain after closure. In addition to·landfills and land treatment units, post-closure requirements may also apply to surface impoundments andwaste piles. The abbreviation "0/0" is used frequently throughout this checklist/questionnaire and stands for the words "Owner and/or operator." The questions in the checklist have been written in a manner such that they can be answered either "Yes" or "No". However, the answers to some questions may require additional explanation. The space provided for comments at the end of each section may be used for explanations. If a question does not apply to a particular facility, simply write "NA" (not applicable) next to the question.

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7.1 POST-CLOSUREPLAN CHECKLIST
GENERALPOST-CLOSURE REQUIREMENTS YES NO 1. WRITTEN PLAN A. Is there a written POST-CLOSUREPLAN at the facility? (40 CFR 265.118(a)) If answer is "N/A" skip tocost estimate checklists. B. Does the post-closure plan cover the**MAXIML~** 

### AREAEXPECTEDTO CONTAIN HAZARDOUS WASTE after closure, including:


# • C. a) Landfills? b) Disposal surface impoundments? c) Land treatment facilities where

.hazardous waste will remain? d) Other remaining hazardous wastes? Does the post-closure plan provide for 30 years of post-closure care? (40CFR265.117(a)) (NOTE: The postclosure period of 30 years is subject tomodification during the post-closure care period. See 40 CFR265.118(3).) Howmany years ofpost-closure care? D. Does the post-closure plan cover all areas where hazardous waste will remain thatwere active as of Il/19/80? Comments:

2. POST-CLOSUREPLAN REQUIREMENTS A. Does the plan clearly identify the ACTIVITIES required in post-closure. care? (40 CFR 265.118(a)) 

# • B. Does the plan clearly identify the
. FREQUENCIES for post-closure activities? (40 CFR 265.1I8(a))


### -2-**,~** 

# • C. Do the GROUNDWATERMONITORINGPlans (40 CFR 265.117(a)(1); 265.118(a)(1)) include: a) Numberofwells? b) Sample collection activities? c) Sample collection frequencies? d) Sample test activities? e) Sample test frequencies? f) Replacement offailedwells? YES NO



# • D. Is there a copy of the GROUNDWATER SAMPLING ANDANALYSIS PROGRAMattached to the plan? E. Do theMAINTENANCEPLANS for waste containment structures (40 CFR 265.118(a)(2)) include?

a) Inspection activities? b) Inspection frequencies? c) Maintaining final cover (erosion damage repair) activities? d) Maintaining final cover (erosion damage repair) frequencies? (40 CFR265.319(d)(1)) e) Vegetation and fertilizing activities? f) Vegetation and fertilizing frequencies? (40 CFR 265.118(a)(2)(i)) g) Mowingactivities? h) Mowingfrequencies? i) 

### Collection and treatment ofrunoff? j) 

### Frequencies ofrunoffcollection and tr.eatment? F. DoMONITORING EQUIPMENTMAINTENANCEplans (40 CFR265.118(a)(2)(ii)) include: a) b) 

### Activities? Frequencies? (40 CFR 265.118(a)(2)(ii)) (40 CFR 265.118(a)(2)(ii)



# • G. Do SECURITYREQUIREMENTplans include: a) Activities? b) Frequencies? H. Does the plan identify the name, address and phone number ofthe POST-CLOSUREPERIOD CONTACT? (40 CFR 265.118(a)(3)) Comments:



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### 3. OTHER REQUIREMENTS Note: Check the post-closure cost estimate for inclusion of costs for the following activities; such costs are to be included (see 40 CFR265.144 (a» even ifthe post-closure plan does not discuss these activities. YES NO 

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A. Does the plan address the requirement for notice to the local land authority? (40 CFR265.119) B. Does the plan address the requirement for notice in the dead? (40 CFR265.120) C. Does the plan address the protection and maintenance of surveyed benchmarks? Comments:

4. GENERAL POST-CLOSURE COST ESTIMATE A. Is there a written post-closure cost estimate? (40 CFR265.144(a» 

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B. C. What is the amount of the estimate? Is there documentation supporting the post-closure cost estimate? 

### $------

a) b) c) d) Work-ups? Contractor bids? Operating history? Other D. Is the annual estimate multiplied by 30 to cover the entire post-closure care period? (40 CFR265.144(b» 

### E.



### F. Has the cost estimate been adjusted by the 9% inflation factor? (40 CFR265.144(b» Does the cost estimate cover all the activities in the post-closure plan? (40CFR 265.118)?-- 

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• Including labor costs? Aswell as the requirements ofnotice to local land authorities and in deeds? 

### (40 CFR 265.119, 265.120) G. Does the post-closure cost estimate cover all required post-closure activities? 

### (40 CFR 265.144(a)) If "NO" spec.ify in comments below. Comments:



### -5- YES NO7.2 UNI! SPECIFIC REQUIREMENTS NOTE: Although unit specific requirements apply primarily to landfills and land treatment units, situations may arise where post-closure requirements also.apply to surface impoundments and waste piles. For example, if an % of a surface impoundment cannot effectively remove all contaminated soils from the unit during closure, some post-closure requirements may apply. In this situation, the 

### % would close the impoundment and provide post-closure care as if the unit were a landfill. YES NO 1. LANDFILLS (40 CFR265.310) A. Does the post-closure plan address the following objectives and indicate how they will be achieved Ii 

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Does the post-closure plan include at least a narrative statement indicating that the foilowing factors were considered? 

### B. a. b.



### c.

a. 

### b. c. 

### d.
e.

f.


### g. 

### h. Control ofpollution migration via groundwater, surface water, and air. Control of surface water infiltration, including**pr~vention** ofpolling. Prevention of erosion.

Type and amount ofwaste. Mobility and rate ofmigration. Site location, topography, and surrounding land use. Climate, include amount, frequency, and pH ofprecipitation. Characteristics of the cover including material type, final surface contour, thickness, porosity, permeability, slope, and vegetation. Geological conditions, soil profiles, and surface and subsurface hydrology. Unsaturated zone monitoring. Type, concentration, and depth of hazardous constituent, migration as compared to background concentrations. 

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Comments:



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# • C. In addition to the items listed in Section G-2(2)(e), do post-closure maintenance plans include?
a. Procedures for collecting. removing. and treating leachate. b. The frequencies ofcollecting. removing. and treating leachate. c. Gas collection activities. d. Gas collection frequencies. YES 

### NO

Comments:

2. LAND TREATMENT (40 CFR 265.288) Does the post-closure plan address the following objectives and indicate how theywillbe achieved? 

# • A.

a. 

### b.
c. 

### d. Control ofmigration ofhazardous wastes and constituents into the groundwater. Control of the release ofcontamination runoff in surfacewater. Control of the release ofairborne particulate contaminants caused 

### by wind erosion. Protection of food chain crops. Comments:

B. Does the post-closure plan include at least anarrative statement indicating that the following factors were considered in addressing the closure objectives? 

# • a. b • 

### Type and amount ofwaste. Mobility and rate ofmigration



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### c. d.
e.

f.
g. 

### h.

Comments: Site location, topography, and surrounding land use. Climate, including**amount~** 

### frequency and pHofprecipitation. Characteristics of the cover including material type,**fi~al** 

### surface contour, thickness, porosity, permeability, slope, and vegatatian. Geological characterization, soil profiles, and surface and subsurface hydrology. Unsaturated zonemonitoring. Type, concentration, and depth ofhazardous constituentmigration as compared to background concentrations.

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### YES NO 

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# • 7.3 VERIFICATION OFCOST**ESTI~~TES** Sections 1-10 deal with the verification of cost estimates for required work performed during the post-closure period. However, some of the information requested in the following sections may not be applicable to a particular facility. If an item does not apply, mark "NAil (not appliable) on the line located to the left of that item. If the requested information is applicable, simply place a" "on the line and enter the estimated figure on the line located to the right of the item. On the other hand, if the requested information is applicable and yet the facility has not provided an estimate for the particular item, enter "NP" (not provided) on the line in the right column. Be sure that all estiamtes entered below are assigned the appropriate units (i.e., dollars, cubic meters, years, etc.). 1. INSPECTION/FACILITY VISITS
Applicable/NA 

### A. Total hours ofprofessional level personnel (hrs/year) Amount/NP 

# .•**~-** a. b • c. From cost estimate From post-closure plan Inspector's estimate



# • B. Unit cost1forprofessional level personnel ($/hr)
a. From cost estimate C. Total inspection/facility visit cost ($/year)
a. From cost estimate 2. REESTABLISHING FINAL COVERAND VEGETATION A. Area involved (yd2)
a. From cost estimate b. Fromposte-cLosure plan c. Frbmvisual inspection B: Unit cost for reestablishing cover and**~egetation** ($/yd2)

1Loadedwith costs for support personnel.



### -9-Applicable/NA
a. From cost estimate C. Reestablishing cover and vegp.tation cost ($/year)
a. From cost estimate 

### 3. FERTILIZING A. Area involved. (yd2)
a. From cost estimate b. Frompost-closure plan c. Fromvisual inspection 

### B. Unit cost for fertilizing 

### ($/yd2)
a. From cost estimate C. Total fertilizing cost ($/year)
a. From cost estimate Amount/NP 

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4. MOWING A. Area involved (yd2)
a. From cost estimate b. From post-closure plan c. Fromvisual inspection 

### B. Unit cost for mowing ($/yd2)
a. From cost**estim~te** C. Mowing cost ($/year)
a. From cost estimate 

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5. GROUNDWATERMONITORING AND WELL REPLACEMENT A. Groundwater Monitoring
a. Number ofwells 1 From cost estimate ii. Frompost-closure plan iii. Fromvisual inspection b. Unit cost for groundwater monitoring ($/well/year) i. From cost estimate -10- 

# C)" epplicable/NA c. Groundwater monitoring cost ($/year) i. From cost estimate Amount/NP

B. Well Replacement
a. Average annual number ofwell replacements i. From cost estimate ii. Frompost-closure plan iii. Inspector's estimate b. Unit cost for well replacement ($/replacement) i. From cost estimate
c. Cost for well replacement ($/year) i. From cost estimate C. Total groundwater**monitor~ng** and well replacement cost ($/year)


### a. From cost entimate 6. MAINTAININGAND REPLACING FENCES A. Maintaining Fences
a.

b. Length of fence required (yd) i. From cost estimate ii. From post-closure plan iii. Fromvisual inspection Unit cost for maintaining fences ($/yd) i. From cost estimate


# • c. Cost for maintaining fences ($/year) i. From cost estimate B. Replacing Fences
a. Length**o~** fence to be replaced annually (yd)

2No t e in comment section whether well replacement component is on annual basis or not. 

### -11-Applicable/NA i. From cost estimate ii. From post-closure plan iii. Inspector's estimate b. Unit cost for fence replacement ($/yd) i. From cost estimate
c. Cost of fence replacement ($/year) i. From cost estimate C. Total Cost'for *aintaining and**~eplacing** Fences ($/year) 7. COLLECTION, REMOVAL AND TREATMENT OFLEACHATE 

## A. Amount of leachate collected (gal./year)
a. From cost estimate b. Frompost-closure plan Amount/NP

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B. Off Site Disposal


### a. Amount of leachate removed to off site disposal facilities (gal./year) i. From cost estimate ii. From post-closure plan 

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b. Unit cost for off site leachate disposal**($/gal~)** i. From cost estimate
c. Unit cost for transport of leachate ($/gal./mile) i. From cost estimate d. Transport distance (miles) i. From cost estimate


### 3Total length of fence to be replaced over the entire post-closure period divided by 30 to obtain an annual average. 4No t e in comment section whether fence replacement component is on annual basis or not.

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# C).

### ~Plicable/NA Amount/NP ii. From post-closure plan iii. By map reference
e. Cost of transport ($/year) i. From cost estimate f. Total cost of off-site treatment/ disposal of leachate ($/year) i. From cost estimate C. On Site Disposal
a. Amount of leachate disposed of on-site (gal.) i. From cost estimate ii. Frompost-closure plan b. Unit cost of on site leachate disposal ($/gal.)

c. i. From cost estimate Cost of on-site leachate disposal ($/year) i. From cost estimate D. Total Cost for Collection, Removal, Treatment, and Disposal of Leachate
a. From cost estimate 8. ADMINISTRATIVE FUNCTIONS A. Hours ofmanagement time required to administer the post-closure plan (hrs/year)
a. From cost estimate b. From post-closure plan c. Inspector's estimate B. Unit cost for management time5 ($/hr)
a. From cost estimate 

# • C. Total administrative cost ($/year)

5Loaded with costs for support personnel. 

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### Applicable/NA
a. Fromcost estimate .9. 

### OTHER (SPECIFY) ($/YEAR) A. Local land authoritynotice ($/year) (40 CFR 265.119) B. Notice in deed ($/year) (40 CFR265.120) C. D. 

### E. (Total Other) 10. TOTALANNUALPOST-CLOSURE COSTS ($) 

### A. Fromcost estimate

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• COMMENTS

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