SITE EVALUATION BASICS OF THE TRADE

Ken Stratton

SUBSURFACE WASTEWATER TEAM

DAVID BRALEY (SUPERVISOR)

JIM JACOBSEN (1 ST TIME VARIANCES-HIP REVIEWS)

GLENN ANGELL (SITE EVALUATORS)

BRENT LAWSON (LPI’S & REPLACEMENT VARIANCES)

A MESSAGE FROM OUR SPONSOR

HOW DOES A SEPTIC SYSTEM WORK

MINIMUM STANDARDS

THESE RULES ARE IN PLACE FOR HEALTH AND SAFETY

SUBSURFACE WASTEWATER APPOINTMENT AND ADMINISTRATION OF LPI’S CONVERSION OF SEASONAL DWELLINGS MINIMUM LOT SIZE RULES SITE EVALUATORS SWIMMING POOLS ESABLISHMENT AND OPERATION OF CREMATORIUMS

§4212. Department of Health and Human Services; responsibilities 1. Administration of rules. The department is responsible for ensuring the proper administration of the subsurface wastewater disposal rules and permitting processes by municipalities Plumbing inspectors 1.Appointment; compensation; removal. In every municipality, the municipal officers shall appoint one or more inspectors of plumbing, Title 30-A HOW IS THIS ACCOMPLISHED?

HOMEOWNER SITE EVALUATOR LOCAL PLUMBING INSPECTOR PERMITTING ABUTTERS CONTRACTOR (INSTALLATION) LPI 1 ST INSPECTION CONTRACTOR (INSTALLATION) LPI 2 ND INSPECTION CONTRACTOR COMPLETE INSTALLATION STEP BY STEP

July, 1974 PERC TEST SITE EVALUATION PRE POST

QUALIFICATIONS TO TAKE THE EXAM Education or Experience A. Education 1. A graduate from an accredited college or university with an undergraduate degree in engineering, geology, or similar. 2. Twelve [12] months or more of experience. B. Experience 1. Have a high school education or equivalent. 2. Four [4] years or more of experience.

TWO EXAMS WRITTEN AND FIELD 1)Rule requirements 2) Soils 3) System Design IN ACCORDANCE WITH THE CODE 1) Parent material 2) Textural classification 3) Drainage condition 4)Depth to limiting factors IN ACCORDANCE WITH THE CODE WRITTEN WILL CONSIST OF: FIELD WILL CONSIST OF:

24” SUBSURFACE WASTEWATER INTERNAL

Site evaluation: The practice of investigating, evaluating, and reporting the basic soil and site conditions that apply to wastewater treatment and disposal along with a system design in compliance with these Rules.

INVESTIGATING 1) CITY/TOWN – PROPERTY LOCATION 2) OWNER/APPLICANT INFORMATION –NAME - MAILING ADDRESS 3) TYPE OF APPLICATION – FIRST TIME / REPLACEMENT SYSTEM 4) SIZE OF PROPERTY 5) IN THE SHORELAND ZONE? 6) APPLICATION REQUIRES? VARIANCE – LOCAL OR STATE 7) HOW MANY BEDROOMS / MULTI FAMILY / RESTARAUNT 8) SEASONAL OR YEAR ROUND 9) COMPLETE SYSTEM / PRIMITIVE SYSTEM / LIMITED SYSTEM / COMPONENTS ONLY 10) TYPE OF WATER SUPPLY 11) SIZE OF TREATMENT TANK 12) DISPOSAL FIELD TYPE AND SIZE 13) IS THERE A GARBAGE DISPOSAL 14) DESIGN FLOW 15) DOES IT NEED A PUMP

STARTING WITH THE SEPTIC TANK

SLUDGE EFFLUENT SCUM

EVALUATING SETBACKS SIZING 90 GPD PER BEDROOM 2 BED. MIN 180 GPD

ALL SETBACKS ARE MEASURED FROM THE FOOTPRINT OF THE DISPOSAL FIELD Stone & Pipe 3’ Shoulder Fill Extension

ALL SETBACKS AREE MEASURED FROM THE FOOTPRINT OF THE DISPOSAL FIELD

EVALUATING SETBACKS

EVALUATING SETBACKS

DEPTH OF CASING –VS- SETBACK DISTANCE PROTECTION OF THE POTABLE WATER SUPPLY

EVALUATING SOIL CONDITIONS TABLE 4D

EVALUATING SOIL CONDITIONS PARENT MATERIAL PROFILE DESCRIPTION SIZING FACTOR MAX = 48”

EVALUATING SOIL CONDITIONS PROFILE 3 IN THE INVESTIGATING PROCESS: OWNER WANTS TO BUILD A 3 BEDROOM HOME EACH BEDROOM IS RATED IN THE RULES AS 90 GALLONS PER DAY FOR SIZING 3 BEDROOMS X 90 GPD = 270 GALLONS PER DAY 270 GPD SIZING FACTOR 3.3 SQ. FT. X 891 SQUARE FEET OF DISPOSAL FIELD

20’ 45’ 900 SQ. FT. PROFILE 3

Limiting Factor Depth, in inchesBedrock Limiting Factor ConditionSoil Drainage Limiting Factor or Restrictive Layer Condition > 48 B 15 to 48AIIIC 9 to <15AIID <9AIE TABLE 4E SOIL CONDITION LIMITING FACTOR = WATER TABLE, BEDROCK OR RESTRICTIVE LAYER (Can the system be put in the ground or will I have a hump in my yard) PROFILE 3 20” BEDROCK

Limiting Factor Depth, in inchesBedrock Limiting Factor ConditionSoil Drainage Limiting Factor or Restrictive Layer Condition > 48 B 15 to 48AIIIC 9 to <15AIID <9AIE TABLE 4E SOIL CONDITION LIMITING FACTOR = WATER TABLE, BEDROCK OR RESTRICTIVE LAYER (Can the system be put in the ground or will I have a hump in my yard) PROFILE 3 Mottling: blotches or spots of contrasting color INDICATES WATER TABLE 14” - D

First Time & Expanded Systems Outside of the Shoreland Area: Separation in Inches Soil Profile Soil ConditionAIAIIAIIIBCDE 1, 2, 3, 4, 7, 8, 9 Variance Required: Expansions Not Allowed for 1 st Time[d] Variance Required: Expansions; Not Allowed for 1 st Time [d] 5,6 Variance Required: Expansions; Not Allowed for 1 st Time [d]24 Variance Required: Expansions; Not Allowed for 1 st Time [d] 10 Not Allowed Not Allowed 11, 12 Use Tables 4D and 4E to determine the soil profile and description which best describes the observed conditions. PROFILE 3-D 18” SEPERATION FROM THE LIMITING FACTOR TO BOTTOM OF THE DISPOSAL FIELD

14” PROFILE 3-D – 18” SEPERATION 18” 14” BELOW GRADE + 4”ABOVE

14” PROFILE 3-D 18” 14” BELOW GRADE + 4”ABOVE NO LIMITING FACTOR (BEDROCK- RESTRICTIVE LAYER –WATER TABLE)

LOCAL ORDINANCES… SCARBOROUGH FEET TO LIMITING FACTOR YORK MINIMUM OF 120 GALLONS PER BEDROOM INSTEAD OF 90 PORTLAND WATER DISTRICT AREA GALLONS PER BEDROOM CHINA REQUIRES BACKHOE TEST PITS---1 IN THE CENTER AND AT EACH CORNER

System ties: Three measurements from two or more known horizontal reference points or two measurements from one horizontal reference point with compass bearin gs

Three measurements from two or more known horizontal reference points

Two measurements from one horizontal reference point with compass bearings for each horizontal measurement N E 40 E 100

Site evaluation: The practice of investigating, evaluating, and reporting the basic soil and site conditions that apply to wastewater treatment and disposal along with a system design in compliance with these Rules.

REPORTING HHE-200 FORM (BLUEPRINT) MIN. 3 PAGES

PAGE 1 SOIL DATA & DESIGN CLASS PROFILE CONDITION ___________/_______________ At Observation Hole #________ Depth___________” Of Most Limiting Factor PROFILE 3-D, 18” SEPERATION 3 D 18 1

PAGE 2 MAP OF VICINITY PROPERTY DIAGRAM DISPOSAL AREA LOCATION SOIL LOG

PAGE THREE TYPE OF SYSTEM ORIGINAL GROUND ELEVATIONS ELEVATION REFERENCE POINT SYSTEM TIES LIMIT OF THE FILL EXTENSION BACKFILL REQUIREMENTS CONSTRUCTION ELEVATIONS DISOSAL FIELD CROSS SECTION

Tall grass Curb stop

DIG SAFE WAS CALLED BEFORE CONSTRUCTION NOT ALL WATER DISTRICTS ARE A MEMBER OF DIG SAFE DOUBLE CHECK WITH THE WATER DISTRICT

MERRY CHRISTMAS