Septic in Rusk, TX

Last updated: Mar 21, 2026

Welcome to Rusk—where the charm of small-town life meets practical, down-to-earth home care. In this corner of East Texas, many properties sit on generous lots with quiet, behind-the-scenes septic systems keeping bathrooms flushing and dishes draining without a fuss. If you're buying a home here or already calling Rusk home, you'll want reliable guidance on keeping that system healthy for years to come.

Is septic common in Rusk? Should I expect septic if I own or buy a home?

Yes. In Rusk and broader East Texas, central sewer service isn't always available to every street or neighborhood, so many homes rely on on-site septic systems. If a property isn't connected to municipal sewer, it almost certainly has a septic system. When you're buying or selling, expect to see a septic tank and drain field on most rural lots. A thorough check is worth its weight: ask for pumping records, a system location map, and recent inspection notes. If you notice backups, damp spots, or strong odors, those are signs to have a licensed septic pro take a closer look.

Why homes typically use septic systems in Rusk

  • Rural layout and land size: Many homes sit on lots where extending a sewer line isn't practical or affordable.
  • Soil and site conditions: The local soils and groundwater patterns call for on-site treatment designed to fit the land, rather than routing wastewater to a distant public line.
  • Cost effectiveness and independence: On-site systems let homeowners manage maintenance locally and avoid ongoing municipal connection fees.
  • Local regulations and water protection: Properly designed and maintained septic systems help protect wells, streams, and the broader neighborhood watershed.
  • Common system types you'll see: conventional septic with a tank and drain field, mound systems or other specialty designs where soils are restrictive, and in some cases aerobic treatment units for challenging sites.

High-level explanation (why septic exists here)

A septic system is a practical, on-site solution that treats wastewater right where you live. Wastewater first settles in the tank, solids break down with time, and liquid effluent moves into the drain field to percolate through the soil. East Texas conditions—soil texture, rainfall, and lot configuration—shape the tank size, field layout, and maintenance plan. With proper care, a well-mized septic system can serve a home reliably for many years; neglect, overuse, or improper repairs, on the other hand, can lead to costly fixes.

In the sections ahead, you'll find practical steps and tips to keep your Rusk system running smoothly and protect your property.

Where Septic Systems Are Common in Rusk

Map of septic coverage in Rusk, TX

Where septic systems are most common in Rusk

In and around Rusk, septic is the standard option for homes that aren't on city sewer. You'll encounter septic on a lot-by-lot basis, especially where public sewer lines don't extend far enough to justify connection costs. Expect to see septic on many rural properties, older neighborhoods that predate centralized sewer, and newer homes on larger lots where extending sewer wouldn't be practical.

  • Rural homes and farms on one-half acre to several acres that aren't tied to municipal sewer.
  • Outlying or older subdivisions where sewer service wasn't brought in, leaving individual OSSFs as the feasible option.
  • New construction on sizable lots where the cost of extending sewer lines is high or not available.
  • Sites with soils or conditions that require specialized designs (for example, limited drainage or higher groundwater) and therefore more site-sensitive septic systems.

Why this pattern shows up in Rusk

Rusk's geography and infrastructure shape septic usage. The city provides sewer service within its core area, but many surrounding properties rely on OSSFs. Local lot configurations, soil types, and groundwater levels influence system design and feasibility.

  • Public sewer access is concentrated in town; outside that footprint, septic is the practical choice.
  • Lot sizes in rural Cherokee County commonly accommodate an absorption field, making OSSFs a workable long-term solution when properly designed.
  • Soil and site conditions vary; when soils offer good drainage and appropriate setback distances, conventional septic systems function well. In tighter sites or challenging soils, mound systems or alternative designs may be required.

How siting and maintenance influence common layouts

The way land is laid out around houses, wells, and driveways determines where the septic system sits and how it's protected.

  • Absorption field placement is planned away from wells, foundations, and property lines to reduce contamination risk and to meet setback requirements.
  • In hilly or uneven terrain, drain fields may be leveled with grading or use alternative designs to ensure proper drainage.
  • Central features like garages or livestock areas can steer the position of the septic tank and drain field to protect both the system and usable outdoor space.

What this means for homeowners and buyers

If you're evaluating property in Rusk, understanding septic presence and condition is crucial.

  1. Confirm OSSF status: Ask for the original septic permit, maintenance records, and any recent inspections.
  2. Schedule a professional septic evaluation: A licensed septic contractor or inspector can assess tank integrity, baffles, pump status, and drain-field health.
  3. Review soil and site data: A percolation test or soil evaluation can reveal whether the current design is suited to the site or if an upgrade is advisable.
  4. Plan for ongoing care: Regular pumping (typically every 3–5 years for many homes, depending on tank size and usage), protecting the drain field from heavy equipment, and avoiding the disposal of harsh chemicals or non-biodegradable items will extend system life.

Official resources

Septic vs Sewer: What Homeowners in Rusk Should Know

How septic systems work vs city sewer

  • In many rural parts of Rusk, homes rely on on-site septic systems. Wastewater from the house goes into a septic tank, where solids settle, then liquid effluent moves to a drain field for natural treatment.
  • City or county sewer systems collect wastewater through a network of pipes and transport it to a centralized treatment plant for processing.
  • Ownership and responsibility differ: with septic, you're responsible for maintenance, pumping, and potential repairs. With sewer, the utility handles operations and most repairs (though your usage and connection agreements still matter).

Key differences at a glance

  • Cost structure: Septic involves pumping, inspections, and possible leach-field work over time. Sewer bills cover ongoing treatment and service, plus any connection fees.
  • Space and site needs: Septic requires space for the tank and drain field on your property. Sewer availability depends on utility coverage and distance to the sewer main.
  • Environmental impact: A well-maintained septic system protects groundwater and wells; a failing system can contaminate nearby water sources. A sewer connection avoids on-site disposal but transfers responsibility to the utility.

Should you connect to sewer in Rusk?

  1. Check availability: Contact the local utility or city/county offices serving Rusk to see if public sewer is available to your property.
  2. Compare costs: Get a formal cost estimate for a sewer connection (tap fees, service charges) vs. ongoing septic maintenance costs.
  3. Assess disruption and timelines: Sewer connections can require trenching and permit approvals, which may affect timelines and landscaping.
  4. Consider long-term reliability: Utilities maintain sewer pipes and treatment plants; septic systems can fail due to improper use or soil conditions.
  5. Make an informed decision: If you're in a rural area without sewer, a well-maintained septic remains a viable option; if sewer is accessible and affordable, a connection can reduce your on-site maintenance burden.

Maintenance expectations: Septic vs sewer

  • Septic maintenance (on your property):
    • Inspect and pump every 3–5 years (size of tank and household usage matter).
    • Avoid flushing or dumping fats, oils, chemicals, and non-biodegradable items.
    • Conserve water to reduce load on the system.
    • Keep the drain field clear of heavy equipment, trees, and deep-rooted shrubs.
  • Sewer maintenance (through the utility):
    • Typically includes scheduled maintenance, pipeline cleaning, and system monitoring.
    • You'll still need to manage water usage and avoid illegal connections or dumping harmful substances.
    • If you notice sewer backups or strong odors, report them to the utility promptly.

Signs your septic may be failing (on-site system)

  • Slow drains, gurgling sounds, or backups in sinks and toilets.
  • Wet, lush, or unusually green patches over the drain field.
  • Strong wastewater odor near the house or outside the drain field.
  • Standing water or soggy soil above the septic area.
  • Frequent repairs or need for more frequent pumping than expected.

When to seek professional help

  • If you notice backups, odors, or standing water around the tank or drain field.
  • If your inspections or pumping are routinely overdue.
  • If you're planning significant landscaping changes or a potential sewer connection, consult a licensed septic service or a civil/environmental professional.
  • For guidance, rely on licensed installers and local health or environmental authorities.

Resources and official information

Typical Septic System Types in Rusk

Conventional gravity septic systems

  • How they work: A buried septic tank separates solids from wastewater, and clear effluent flows by gravity into a network of perforated pipes laid in a trench or bed. Soil in the absorption area then treats the liquid as it percolates downward.
  • What you'll see: A tank, a distribution box, and a drain field with shallow trenches or a bed.
  • Ideal conditions: Moderate percolation, adequate depth to groundwater, and well-drained soil.
  • Pros/cons: Cost-effective and reliable in good soils; performance drops if the soil is too clayey, too shallow, or overly high water tables.
  • Maintenance touchpoints: Regular pumping (typically every 3–5 years for households with normal wastewater flow), avoid dumping fats, oils, and solids, and protect the drain field from heavy vehicles or construction.

Low-Pressure Dose (LPD) / Pressure Distribution systems

  • How they work: A pump sends small, evenly spaced doses of effluent through perforated laterals. This improves distribution in marginal soils and helps keep deeper soils from becoming waterlogged.
  • When used: In soils with limited percolation, high water table, or shallow bedrock where a conventional gravity field won't perform reliably.
  • Pros/cons: More uniform field use and better performance in challenging soils; higher energy and maintenance needs than a conventional system.
  • Maintenance touchpoints: Regular pump checks, valve and timer verification, and annual service by a licensed operator if required by local code.

Aerobic Treatment Units (ATU)

  • How they work: ATUs introduce controlled aeration to aggressively treat wastewater, producing higher-quality effluent that can be disposed of in smaller or more restrictive drain fields.
  • Components you'll encounter: An aeration tank, a settlement chamber, pumps or blowers, and a disposal field (often a trench or mound) designed to receive treated effluent.
  • Pros/cons: Higher treatment performance in marginal soils; they require electricity and more routine maintenance.
  • Maintenance touchpoints: Annual servicing by a licensed operator, routine inspections, and prompt attention to alarms or mechanical issues.

Mound systems (sand mound)

  • Why they're used: Elevated sand-filled mounds are built above the native soil to provide proper treatment where the natural soil is too shallow, too compacted, or the groundwater is too close.
  • How they're built: A septic tank pre-treats wastewater, then effluent is pumped or dosed into a raised mound of sand and gravel with a network of drains.
  • Pros/cons: Effective in limited soil conditions; more surface area and cost than a conventional system.
  • Maintenance touchpoints: Keep the mound free of vehicle traffic and roots; routine inspections and pump service as required by local codes.

Sand filter / Recirculating Sand Filter (RSF)

  • How they work: After the septic tank, effluent passes through a sand filter that provides additional treatment before disposal into the soil.
  • Pros/cons: Improved effluent quality; useful when the native soil requires extra treatment.
  • Maintenance touchpoints: Regular maintenance of the sand bed, ensuring the dosing system operates correctly, and periodic inspections.

Evapotranspiration (ET) beds

  • When this type is used: In very dry climates; depending on local codes, ET beds rely on evaporation and plant uptake to dispose of treated wastewater.
  • Availability in Rusk: Less common, but may be permitted in specific sites with appropriate conditions.
  • Maintenance touchpoints: Plant health checks, soil moisture management, and system inspections.

Drip irrigation / drip disposal (emerging option)

  • What it is: Subsurface drip lines distribute treated effluent slowly to the root zone.
  • Availability: Permitted in some areas under strict design and monitoring; not universally allowed.
  • Maintenance touchpoints: Regular verification of emitters, filters, and alarm systems; professional design and installation.

Maintenance and local considerations

  • Regular inspections, maintenance, and proper use are essential for all types.
  • Pumping schedules, component access, and field protection vary by system type and local requirements.

Official resources

Common Septic Issues in Rusk

Drainfield Saturation from Heavy Rainfall and Clay Soils

  • Signs to watch for: soggy or marshy areas over the drain field, lush, bright-green grass above the field, toilets or sinks draining slowly, and occasional odors near the yard.
  • Why this is common in Rusk: East Texas sees substantial rainfall and has many clay-rich soils that don't drain quickly. A high water table in spring and after heavy rains keeps the soil around the drain field saturated longer than in drier regions.
  • What you can do now:
    • Step 1: Conserve water to reduce inflow. Spread out laundry and bathroom use, fix leaks, and prevent unnecessary water from entering the system.
    • Step 2: Avoid driving or parking on the drain field, which can compact soil and worsen drainage.
    • Step 3: Have a licensed onsite sewage facility (OSSF) contractor inspect the tank and leach lines to confirm the field's condition.
  • Longer-term considerations: if saturation recurs, a professional may recommend expanding or relocating the drain field, installing a mound system, or converting to an alternative effluent treatment method.

Tree Roots and Landscaping Intrusion

  • Signs to watch for: slow drains, gurgling noises, sewage odors, cracks or damage in nearby hardscapes, or roots visibly near the septic lines.
  • Why this is common in Rusk: many homes sit among mature trees (pecan, oak, pine) whose roots seek moisture and nutrients from buried pipes. Root intrusion is a frequent cause of blocked lines and field failure in East Texas yards.
  • What you can do now:
    • Step 1: Have a professional locate and map the septic lines before planting or trenching.
    • Step 2: Plant trees and shrubs away from the septic system; install root barriers if you must place vegetation nearby.
    • Step 3: If roots are already encroaching, a technician can clean the lines and may recommend rerouting or upgrading the field.
  • Ongoing maintenance: maintain a safe buffer around the field and monitor for early warning signs of intrusion.

Aging Systems and Maintenance Gaps

  • Signs to watch: more frequent pumping, backups in toilets or drains, persistent odors, damp spots around the tank lid, or a decline in performance after heavy use.
  • Why this matters in Rusk: many homes in Cherokee County are older, with components like baffles, pumps, or risers that degrade over time. Without regular upkeep, small issues become major failures.
  • Maintenance steps:
    • Step 1: Schedule professional inspections every 1–2 years, especially for older systems.
    • Step 2: Pump the septic tank every 2–3 years for typical residential use; more often with high groundwater, large families, or frequent garbage disposal use.
    • Step 3: Inspect and clean the distribution box and drain lines as recommended by your contractor.
  • Long-term plan: budget for eventual tank replacement or leach-field upgrades as components reach the end of life.

Excess Water Load and Irrigation Mismanagement

  • Signs to notice: sudden slow drains after heavy usage, toilets that gurgle when you run water, or standing water around the yard after irrigation.
  • Why this happens in Rusk: irrigation systems, rain events, and high water use days can overwhelm a system designed for average loads, especially on older setups.
  • Quick actions:
    • Step 1: Space out water-intensive activities (laundry, showers, irrigation) to avoid peak loads.
    • Step 2: Repair leaks immediately and consider water-saving fixtures (low-flow toilets, efficient washers).
    • Step 3: Redirect irrigation to avoid spray or drip patterns toward the drain field.
  • Longer-term fix: assess whether the system can handle current loads and discuss potential upgrades with an OSSF professional.

Odors, Backups, and Surface Indicators

  • Signs: sewage odors in the yard or home, gurgling fixtures, toilets or drains backing up, or a consistently wet area over the field.
  • Why this occurs in Rusk: when soils are saturated or the tank isn't functioning properly, the system can push effluent back toward the house or surface.
  • Immediate steps:
    • Step 1: Do not pump excessive amounts of chemical cleaners into the system; avoid flushing wipes or non-dispersible products.
    • Step 2: Schedule a professional inspection to identify clogs, failed components, or the need for pumping.
    • Step 3: If backups occur, minimize use until a technician arrives to prevent sewage exposure and damage.
  • Prevention: regular maintenance and timely repairs reduce the frequency of odors and backups.

Official resources:

Septic Inspection, Permits & Local Oversight

Who Oversees OSSFs in Rusk

  • In Texas, onsite wastewater facilities (OSSFs) are regulated at the state level by the Texas Commission on Environmental Quality (TCEQ). The local health department often handles permitting and inspections under state rules.
  • For Rusk, Cherokee County Environmental Health typically administers many OSSF permits, but a review with the City of Rusk building department is wise if your property sits inside city limits. Confirm which office issues permits for your project before starting.

Permits You Need (Step-by-Step)

  1. Determine regulatory authority for your property (county vs. city).
  2. Hire a licensed OSSF designer/installer.
  3. Schedule a site evaluation and soil testing as required by the designer and local health department.
  4. Have the system design reviewed and submit the permit application.
  5. Obtain a permit before any installation begins.
  6. Arrange inspections during installation and coordinate with the inspector.
  7. Complete the final inspection and close out the permit; keep all records for future reference.

Inspections & Timeline

  • Pre-construction: soils evaluation and lot layout to ensure the site can support a functioning system.
  • During installation: inspections at key milestones (tank placement, trenching, piping, backfill) to verify compliance.
  • Post-installation: a final inspection to confirm proper operation, correct setbacks, and that the system is accessible for future maintenance.

What Inspectors Look For

  • Correct setback distances from wells, structures, and water bodies; proper drainage direction.
  • Proper tank orientation, labeling, and watertight seals on lids and access ports.
  • Correct installation of baffles, distribution pipes, and any required leach-field components.
  • Adequate venting and collapse-prevent measures; proper backfill and compaction.
  • Accessibility for future pumping and maintenance, with labeled cleanouts and access ports.

Maintenance, Transfers & Permits

  • Routine maintenance is essential: follow the design's pumping frequency (often every 3–5 years) and keep detailed service records.
  • If you're selling the home, have documentation of the system's installation and maintenance; a transfer inspection may be encouraged or required by local practice. Check with your local office to confirm requirements.

Resources & How to Find Local Contacts

  • Texas Commission on Environmental Quality (OSSF program):
  • Texas Department of State Health Services – Regions and Local Health Departments: https://www.dshs.texas.gov/regions/
  • For local specifics in Cherokee County and the City of Rusk: check with the Cherokee County Environmental Health Department and the City of Rusk building department to confirm permit paths and inspection scheduling before you proceed.

Septic Maintenance for Homes in Rusk

Understanding Rusk-specific challenges

Rusk sits in East Texas where soil types, rainfall, and groundwater can stress on-site systems. Sewer odors, soggy backyard patches, or slow drains are often clues that the septic system is struggling with water table or drainage. In Rusk, heavy spring rains can saturate the drain field, reducing its ability to absorb effluent. Roots from trees and shrubs near the system, especially older homes, can intrude on pipes and the distribution box. Knowing these local influences helps you tailor maintenance and avoid costly repairs.

Seasonal and weather considerations for Rusk

  • Wet seasons can push effluent back toward the tank or cause surface sogginess over the drain field.
  • Dry spells don't mean you can ignore maintenance; extended drought can cause cracking in soil and affect bacterial activity.
  • Freezes are rare but can occur; keep inspection ports accessible and avoid aggressive deicing near the system.
  • Home landscape practices in East Texas—fertilizer use, daily laundry loads, and kitchen grease—impact system performance more than climate alone.

Maintenance checklist

  • Inspect annually for damp spots, foul odors, and sluggish drains.
  • Pump your septic tank every 3–5 years for typical 1,000–1,250 gallon tanks; larger tanks or bigger households may require more frequent pumping.
  • Inspect and clean the effluent screen (filter) if present; replace if damaged.
  • Check the distribution box and lines for standing water, sags, or crushed pipes; address issues with a licensed professional.
  • Monitor tree roots near the system; trim back roots and relocate planters or sprinklers that may encroach on the drain field.
  • Protect the drain field: keep vehicles and heavy equipment off the area, don't plant deep-rooted trees nearby, and limit irrigation near trenches.
  • Use water wisely: spread laundry and dishwasher loads to avoid peak wastewater surges; install high-efficiency fixtures.

Pumping frequency by tank size (general guidance)

  1. Tank size 1,000 gallons (typical for 3–4 bedrooms): pump every 3–5 years.
  2. Tank size 1,250–1,500 gallons (larger homes or more occupants): pump every 4–6 years.
  3. More occupants or heavy use (e.g., multiple bathrooms, guest rooms): adjust toward 3–5 year range or per professional recommendation.

Do's and Don'ts for Rusk homes

  • Do: use a licensed septic service for inspections, pumping, and any repairs; document every service.
  • Do: maintain a grease trap or minimize fats/greases going into the system; use minimal chemical cleaners.
  • Do: divert roof drains, sump pumps, and irrigation away from the septic area.
  • Don't: flush wipes (even "flushable"), feminine hygiene products, or medications; don't pour solvents, paints, or pesticides down the drain.
  • Don't: drive or park on the drain field; compaction kills soil porosity and drainage.

Troubleshooting and quick fixes

  • If drains are slow or toilets gurgle, avoid tourist-scale DIY fixes; limited-use backups may indicate a full tank or a clogged filter—call a licensed pro.
  • If you notice sewage odors outdoors near the system, stop using water-intensive appliances and schedule a professional assessment promptly.
  • If you see patchy, unusually lush grass over the system, it could indicate a leak or saturation; have a pro evaluate the field and soil conditions.

Resources

Cost Expectations for Septic Services in Rusk

Septic Tank Pumping and Cleaning

  • What it includes: removal of accumulated sludge and scum, cleaning of the tank, inspection of baffles and inlet/outlet pipes, and emptying of the disposal field filter (if present). Disposal of waste follows local regulations.
  • Rusk-specific notes: East Texas clay soils and older installations can lead to faster sludge buildup or more frequent pumping needs. Accessibility (tank lid depth, tight spaces) can affect labor time and price.
  • Typical cost in Rusk: $275–$600 per pumping, with higher end for challenging access or extra services (like a camera check).
  • When it helps most: every 3–5 years for a typical family, sooner with high water usage or small tanks.

Septic System Inspection and Certification

  • What it includes: visual inspection of the tank, baffles, pipes, and drain field; evidence checks for backups or odors; basic dye test or functional test; written report and certificates for real estate transactions if needed.
  • Rusk-specific notes: local real estate transfers often require timely documentation; soil conditions in this area can mask subtle drain-field issues until a failure progresses.
  • Typical cost in Rusk: $150–$350 for a standard inspection; $300–$500 for a more in-depth evaluation or when certifying for sale with additional testing.
  • When it helps most: Seller/Buyer transactions, year-to-year maintenance planning.

Drain Field Evaluation and Repair

  • What it includes: assessment of drain-field performance, soil percolation checks, dye tests if needed, inspection of lateral lines, and identification of failure symptoms (gurgling, damp areas, strong odors).
  • Rusk-specific notes: clay-rich soils and variable groundwater in East Texas can complicate field performance; repairs may require trench work or soil restoration.
  • Typical cost in Rusk: evaluation $150–$450; minor repairs $2,000–$6,000; major repairs or partial replacement $6,000–$15,000 (up to $25,000 for mound or alternate treatment systems in difficult sites).
  • When it helps most: diagnosing slow drains, repeated backups, or persistent soggy drain-field zones.

Septic System Repairs and Component Replacement

  • What it includes: fixing cracked pipes, broken tank baffles, damaged lids, faulty pumps, or inlet/outlet fittings; may involve sealing, resurfacing, or part replacements.
  • Rusk-specific notes: robust rock in some lots can complicate excavation; depth to the tank and accessibility affect repair time and cost.
  • Typical cost in Rusk: $300–$2,500 for common repairs; $2,500–$7,000 for more extensive component replacements; sometimes more for major line repairs or pump upgrades.
  • When it helps most: preventing a full system failure and extending life between replacements.

Tank Lids, Risers, and Access Improvements

  • What it includes: installation of risers, firm lids, and weatherproof access to reduce freezing issues and improve future pumping; may include safety covers.
  • Rusk-specific notes: risers are especially helpful in climates with cold snaps or clay soils that make access harder; improves service efficiency.
  • Typical cost in Rusk: $150–$800 per riser/lid kit, plus labor; total often $300–$1,200 including installation.
  • When it helps most: ease of maintenance, quicker future service calls, and safer access for households.

New Septic System Installation or Major System Upgrades

  • What it includes: site evaluation, soils testing, design of a conventional or advanced treatment OSSF, permit coordination, trenches or mound layout, installation, and startup checks.
  • Rusk-specific notes: soil and rock conditions can drive system type (conventional vs. mound or aerobic treatment units) and increase installation time and cost; local permitting through TCEQ and the county is required.
  • Typical cost in Rusk: conventional systems $5,000–$15,000; advanced or mound systems $12,000–$25,000+; substantial site work or rock removal can push costs higher.
  • When it helps most: new homes, challenging terrain, or when upgrading to a more reliable treatment system.

Routine Maintenance Plans and Service Contracts

  • What it includes: scheduled pump-outs, annual inspections, follow-up repairs, and priority service—often at a bundled price.
  • Rusk-specific notes: can provide predictability in a rural service area and help catch problems before they become emergencies.
  • Typical cost in Rusk: $100–$250 per year, depending on visit frequency and included services.
  • When it helps most: long-term peace of mind and budgeting for maintenance.

Emergency Call-Outs and Backups

  • What it includes: after-hours or urgent response for backups, sewage odors, or surface wetness; diagnostic checks and rapid interventions.
  • Rusk-specific notes: weather events and high rainfall can increase emergency calls; proximity to service providers affects response time.
  • Typical cost in Rusk: average call-out fees $100–$300, plus any necessary repairs or parts.

Official resources:

  • Texas Commission on Environmental Quality (OSSF program): (for local coordination and permit references)